+++ /dev/null
-#
-# For a description of the syntax of this configuration file,
-# see scripts/kbuild/config-language.txt.
-#
-
-menu "Linux Ext2 FS Progs"
-
-config CHATTR
- bool "chattr"
- default n
- help
- chattr changes the file attributes on a second extended file system.
-
-config E2FSCK
- bool "e2fsck"
- default n
- help
- e2fsck is used to check Linux second extended file systems (ext2fs).
- e2fsck also supports ext2 filesystems countaining a journal (ext3).
- The normal compat symlinks 'fsck.ext2' and 'fsck.ext3' are also
- provided.
-
-config FSCK
- bool "fsck"
- default n
- help
- fsck is used to check and optionally repair one or more filesystems.
- In actuality, fsck is simply a front-end for the various file system
- checkers (fsck.fstype) available under Linux.
-
-config LSATTR
- bool "lsattr"
- default n
- help
- lsattr lists the file attributes on a second extended file system.
-
-config MKE2FS
- bool "mke2fs"
- default n
- help
- mke2fs is used to create an ext2/ext3 filesystem. The normal compat
- symlinks 'mkfs.ext2' and 'mkfs.ext3' are also provided.
-
-config TUNE2FS
- bool "tune2fs"
- default n
- help
- tune2fs allows the system administrator to adjust various tunable
- filesystem parameters on Linux ext2/ext3 filesystems.
-
-config E2LABEL
- bool "e2label"
- default n
- depends on TUNE2FS
- help
- e2label will display or change the filesystem label on the ext2
- filesystem located on device.
-
-config FINDFS
- bool "findfs"
- default n
- depends on TUNE2FS
- help
- findfs will search the disks in the system looking for a filesystem
- which has a label matching label or a UUID equal to uuid.
-
-endmenu
+++ /dev/null
-# Makefile for busybox
-#
-# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
-#
-# Licensed under the GPL v2, see the file LICENSE in this tarball.
-
-lib-y:=
-
-lib-$(CONFIG_CHATTR) += chattr.o
-lib-$(CONFIG_E2FSCK) += e2fsck.o util.o
-lib-$(CONFIG_FSCK) += fsck.o util.o
-lib-$(CONFIG_LSATTR) += lsattr.o
-lib-$(CONFIG_MKE2FS) += mke2fs.o util.o
-lib-$(CONFIG_TUNE2FS) += tune2fs.o util.o
-
-CFLAGS += -include $(srctree)/e2fsprogs/e2fsbb.h
+++ /dev/null
-This is a pretty straight rip from the e2fsprogs pkg.
-
-See README's in subdirs for specific info.
+++ /dev/null
-# Makefile for busybox
-#
-# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
-#
-# Licensed under the GPL v2, see the file LICENSE in this tarball.
-
-NEEDED-$(CONFIG_E2FSCK) = y
-NEEDED-$(CONFIG_FSCK) = y
-NEEDED-$(CONFIG_MKE2FS) = y
-NEEDED-$(CONFIG_TUNE2FS) = y
-
-lib-y:=
-lib-$(NEEDED-y) += cache.o dev.o devname.o devno.o blkid_getsize.o \
- probe.o read.o resolve.o save.o tag.o list.o
-
-CFLAGS_dev.o := -include $(srctree)/include/busybox.h
-CFLAGS_devname.o := -include $(srctree)/include/busybox.h
-CFLAGS_devno.o := -include $(srctree)/include/busybox.h
-CFLAGS_blkid_getsize.o := -include $(srctree)/include/busybox.h
-CFLAGS_probe.o := -include $(srctree)/include/busybox.h
-CFLAGS_save.o := -include $(srctree)/include/busybox.h
-CFLAGS_tag.o := -include $(srctree)/include/busybox.h
-CFLAGS_list.o := -include $(srctree)/include/busybox.h
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * blkid.h - Interface for libblkid, a library to identify block devices
- *
- * Copyright (C) 2001 Andreas Dilger
- * Copyright (C) 2003 Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#ifndef _BLKID_BLKID_H
-#define _BLKID_BLKID_H
-
-#include <sys/types.h>
-#include <linux/types.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define BLKID_VERSION "1.0.0"
-#define BLKID_DATE "12-Feb-2003"
-
-typedef struct blkid_struct_dev *blkid_dev;
-typedef struct blkid_struct_cache *blkid_cache;
-typedef __s64 blkid_loff_t;
-
-typedef struct blkid_struct_tag_iterate *blkid_tag_iterate;
-typedef struct blkid_struct_dev_iterate *blkid_dev_iterate;
-
-/*
- * Flags for blkid_get_dev
- *
- * BLKID_DEV_CREATE Create an empty device structure if not found
- * in the cache.
- * BLKID_DEV_VERIFY Make sure the device structure corresponds
- * with reality.
- * BLKID_DEV_FIND Just look up a device entry, and return NULL
- * if it is not found.
- * BLKID_DEV_NORMAL Get a valid device structure, either from the
- * cache or by probing the device.
- */
-#define BLKID_DEV_FIND 0x0000
-#define BLKID_DEV_CREATE 0x0001
-#define BLKID_DEV_VERIFY 0x0002
-#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY)
-
-/* cache.c */
-extern void blkid_put_cache(blkid_cache cache);
-extern int blkid_get_cache(blkid_cache *cache, const char *filename);
-
-/* dev.c */
-extern const char *blkid_dev_devname(blkid_dev dev);
-
-extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache);
-extern int blkid_dev_set_search(blkid_dev_iterate iter,
- char *search_type, char *search_value);
-extern int blkid_dev_next(blkid_dev_iterate iterate, blkid_dev *dev);
-extern void blkid_dev_iterate_end(blkid_dev_iterate iterate);
-
-/* devno.c */
-extern char *blkid_devno_to_devname(dev_t devno);
-
-/* devname.c */
-extern int blkid_probe_all(blkid_cache cache);
-extern int blkid_probe_all_new(blkid_cache cache);
-extern blkid_dev blkid_get_dev(blkid_cache cache, const char *devname,
- int flags);
-
-/* getsize.c */
-extern blkid_loff_t blkid_get_dev_size(int fd);
-
-/* probe.c */
-int blkid_known_fstype(const char *fstype);
-extern blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev);
-
-/* read.c */
-
-/* resolve.c */
-extern char *blkid_get_tag_value(blkid_cache cache, const char *tagname,
- const char *devname);
-extern char *blkid_get_devname(blkid_cache cache, const char *token,
- const char *value);
-
-/* tag.c */
-extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev);
-extern int blkid_tag_next(blkid_tag_iterate iterate,
- const char **type, const char **value);
-extern void blkid_tag_iterate_end(blkid_tag_iterate iterate);
-extern int blkid_dev_has_tag(blkid_dev dev, const char *type,
- const char *value);
-extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache,
- const char *type,
- const char *value);
-extern int blkid_parse_tag_string(const char *token, char **ret_type,
- char **ret_val);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _BLKID_BLKID_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * blkidP.h - Internal interfaces for libblkid
- *
- * Copyright (C) 2001 Andreas Dilger
- * Copyright (C) 2003 Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#ifndef _BLKID_BLKIDP_H
-#define _BLKID_BLKIDP_H
-
-#include <sys/types.h>
-#include <stdio.h>
-
-#include "blkid.h"
-#include "list.h"
-
-#ifdef __GNUC__
-#define __BLKID_ATTR(x) __attribute__(x)
-#else
-#define __BLKID_ATTR(x)
-#endif
-
-
-/*
- * This describes the attributes of a specific device.
- * We can traverse all of the tags by bid_tags (linking to the tag bit_names).
- * The bid_label and bid_uuid fields are shortcuts to the LABEL and UUID tag
- * values, if they exist.
- */
-struct blkid_struct_dev
-{
- struct list_head bid_devs; /* All devices in the cache */
- struct list_head bid_tags; /* All tags for this device */
- blkid_cache bid_cache; /* Dev belongs to this cache */
- char *bid_name; /* Device inode pathname */
- char *bid_type; /* Preferred device TYPE */
- int bid_pri; /* Device priority */
- dev_t bid_devno; /* Device major/minor number */
- time_t bid_time; /* Last update time of device */
- unsigned int bid_flags; /* Device status bitflags */
- char *bid_label; /* Shortcut to device LABEL */
- char *bid_uuid; /* Shortcut to binary UUID */
-};
-
-#define BLKID_BID_FL_VERIFIED 0x0001 /* Device data validated from disk */
-#define BLKID_BID_FL_INVALID 0x0004 /* Device is invalid */
-
-/*
- * Each tag defines a NAME=value pair for a particular device. The tags
- * are linked via bit_names for a single device, so that traversing the
- * names list will get you a list of all tags associated with a device.
- * They are also linked via bit_values for all devices, so one can easily
- * search all tags with a given NAME for a specific value.
- */
-struct blkid_struct_tag
-{
- struct list_head bit_tags; /* All tags for this device */
- struct list_head bit_names; /* All tags with given NAME */
- char *bit_name; /* NAME of tag (shared) */
- char *bit_val; /* value of tag */
- blkid_dev bit_dev; /* pointer to device */
-};
-typedef struct blkid_struct_tag *blkid_tag;
-
-/*
- * Minimum number of seconds between device probes, even when reading
- * from the cache. This is to avoid re-probing all devices which were
- * just probed by another program that does not share the cache.
- */
-#define BLKID_PROBE_MIN 2
-
-/*
- * Time in seconds an entry remains verified in the in-memory cache
- * before being reverified (in case of long-running processes that
- * keep a cache in memory and continue to use it for a long time).
- */
-#define BLKID_PROBE_INTERVAL 200
-
-/* This describes an entire blkid cache file and probed devices.
- * We can traverse all of the found devices via bic_list.
- * We can traverse all of the tag types by bic_tags, which hold empty tags
- * for each tag type. Those tags can be used as list_heads for iterating
- * through all devices with a specific tag type (e.g. LABEL).
- */
-struct blkid_struct_cache
-{
- struct list_head bic_devs; /* List head of all devices */
- struct list_head bic_tags; /* List head of all tag types */
- time_t bic_time; /* Last probe time */
- time_t bic_ftime; /* Mod time of the cachefile */
- unsigned int bic_flags; /* Status flags of the cache */
- char *bic_filename; /* filename of cache */
-};
-
-#define BLKID_BIC_FL_PROBED 0x0002 /* We probed /proc/partition devices */
-#define BLKID_BIC_FL_CHANGED 0x0004 /* Cache has changed from disk */
-
-extern char *blkid_strdup(const char *s);
-extern char *blkid_strndup(const char *s, const int length);
-
-#define BLKID_CACHE_FILE "/etc/blkid.tab"
-extern const char *blkid_devdirs[];
-
-#define BLKID_ERR_IO 5
-#define BLKID_ERR_PROC 9
-#define BLKID_ERR_MEM 12
-#define BLKID_ERR_CACHE 14
-#define BLKID_ERR_DEV 19
-#define BLKID_ERR_PARAM 22
-#define BLKID_ERR_BIG 27
-
-/*
- * Priority settings for different types of devices
- */
-#define BLKID_PRI_EVMS 30
-#define BLKID_PRI_LVM 20
-#define BLKID_PRI_MD 10
-
-#if defined(TEST_PROGRAM) && !defined(CONFIG_BLKID_DEBUG)
-#define CONFIG_BLKID_DEBUG
-#endif
-
-#define DEBUG_CACHE 0x0001
-#define DEBUG_DUMP 0x0002
-#define DEBUG_DEV 0x0004
-#define DEBUG_DEVNAME 0x0008
-#define DEBUG_DEVNO 0x0010
-#define DEBUG_PROBE 0x0020
-#define DEBUG_READ 0x0040
-#define DEBUG_RESOLVE 0x0080
-#define DEBUG_SAVE 0x0100
-#define DEBUG_TAG 0x0200
-#define DEBUG_INIT 0x8000
-#define DEBUG_ALL 0xFFFF
-
-#ifdef CONFIG_BLKID_DEBUG
-#include <stdio.h>
-extern int blkid_debug_mask;
-#define DBG(m,x) if ((m) & blkid_debug_mask) x;
-#else
-#define DBG(m,x)
-#endif
-
-#ifdef CONFIG_BLKID_DEBUG
-extern void blkid_debug_dump_dev(blkid_dev dev);
-extern void blkid_debug_dump_tag(blkid_tag tag);
-#endif
-
-/* lseek.c */
-/* extern blkid_loff_t blkid_llseek(int fd, blkid_loff_t offset, int whence); */
-#ifdef CONFIG_LFS
-# define blkid_llseek lseek64
-#else
-# define blkid_llseek lseek
-#endif
-
-/* read.c */
-extern void blkid_read_cache(blkid_cache cache);
-
-/* save.c */
-extern int blkid_flush_cache(blkid_cache cache);
-
-/*
- * Functions to create and find a specific tag type: tag.c
- */
-extern void blkid_free_tag(blkid_tag tag);
-extern blkid_tag blkid_find_tag_dev(blkid_dev dev, const char *type);
-extern int blkid_set_tag(blkid_dev dev, const char *name,
- const char *value, const int vlength);
-
-/*
- * Functions to create and find a specific tag type: dev.c
- */
-extern blkid_dev blkid_new_dev(void);
-extern void blkid_free_dev(blkid_dev dev);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _BLKID_BLKIDP_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * getsize.c --- get the size of a partition.
- *
- * Copyright (C) 1995, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-/* include this before sys/queues.h! */
-#include "blkidP.h"
-
-#include <stdio.h>
-#include <unistd.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#ifdef HAVE_LINUX_FD_H
-#include <linux/fd.h>
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
-#include <sys/disklabel.h>
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_DISK_H
-#ifdef HAVE_SYS_QUEUE_H
-#include <sys/queue.h> /* for LIST_HEAD */
-#endif
-#include <sys/disk.h>
-#endif
-#ifdef __linux__
-#include <sys/utsname.h>
-#endif
-
-#if defined(__linux__) && defined(_IO) && !defined(BLKGETSIZE)
-#define BLKGETSIZE _IO(0x12,96) /* return device size */
-#endif
-
-#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
-#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
-#endif
-
-#ifdef APPLE_DARWIN
-#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
-#endif /* APPLE_DARWIN */
-
-static int valid_offset(int fd, blkid_loff_t offset)
-{
- char ch;
-
- if (blkid_llseek(fd, offset, 0) < 0)
- return 0;
- if (read(fd, &ch, 1) < 1)
- return 0;
- return 1;
-}
-
-/*
- * Returns the number of blocks in a partition
- */
-blkid_loff_t blkid_get_dev_size(int fd)
-{
- int valid_blkgetsize64 = 1;
-#ifdef __linux__
- struct utsname ut;
-#endif
- unsigned long long size64;
- unsigned long size;
- blkid_loff_t high, low;
-#ifdef FDGETPRM
- struct floppy_struct this_floppy;
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
- int part = -1;
- struct disklabel lab;
- struct partition *pp;
- char ch;
- struct stat st;
-#endif /* HAVE_SYS_DISKLABEL_H */
-
-#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
- if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
- if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
- && (size64 << 9 > 0xFFFFFFFF))
- return 0; /* EFBIG */
- return (blkid_loff_t) size64 << 9;
- }
-#endif
-
-#ifdef BLKGETSIZE64
-#ifdef __linux__
- if ((uname(&ut) == 0) &&
- ((ut.release[0] == '2') && (ut.release[1] == '.') &&
- (ut.release[2] < '6') && (ut.release[3] == '.')))
- valid_blkgetsize64 = 0;
-#endif
- if (valid_blkgetsize64 &&
- ioctl(fd, BLKGETSIZE64, &size64) >= 0) {
- if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
- && ((size64) > 0xFFFFFFFF))
- return 0; /* EFBIG */
- return size64;
- }
-#endif
-
-#ifdef BLKGETSIZE
- if (ioctl(fd, BLKGETSIZE, &size) >= 0)
- return (blkid_loff_t)size << 9;
-#endif
-
-#ifdef FDGETPRM
- if (ioctl(fd, FDGETPRM, &this_floppy) >= 0)
- return (blkid_loff_t)this_floppy.size << 9;
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
-#if 0
- /*
- * This should work in theory but I haven't tested it. Anyone
- * on a BSD system want to test this for me? In the meantime,
- * binary search mechanism should work just fine.
- */
- if ((fstat(fd, &st) >= 0) && S_ISBLK(st.st_mode))
- part = st.st_rdev & 7;
- if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
- pp = &lab.d_partitions[part];
- if (pp->p_size)
- return pp->p_size << 9;
- }
-#endif
-#endif /* HAVE_SYS_DISKLABEL_H */
-
- /*
- * OK, we couldn't figure it out by using a specialized ioctl,
- * which is generally the best way. So do binary search to
- * find the size of the partition.
- */
- low = 0;
- for (high = 1024; valid_offset(fd, high); high *= 2)
- low = high;
- while (low < high - 1)
- {
- const blkid_loff_t mid = (low + high) / 2;
-
- if (valid_offset(fd, mid))
- low = mid;
- else
- high = mid;
- }
- return low + 1;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_loff_t bytes;
- int fd;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s device\n"
- "Determine the size of a device\n", argv[0]);
- return 1;
- }
-
- if ((fd = open(argv[1], O_RDONLY)) < 0)
- perror(argv[0]);
-
- bytes = blkid_get_dev_size(fd);
- printf("Device %s has %lld 1k blocks.\n", argv[1], bytes >> 10);
-
- return 0;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * cache.c - allocation/initialization/free routines for cache
- *
- * Copyright (C) 2001 Andreas Dilger
- * Copyright (C) 2003 Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "blkidP.h"
-
-int blkid_debug_mask = 0;
-
-int blkid_get_cache(blkid_cache *ret_cache, const char *filename)
-{
- blkid_cache cache;
-
-#ifdef CONFIG_BLKID_DEBUG
- if (!(blkid_debug_mask & DEBUG_INIT)) {
- char *dstr = getenv("BLKID_DEBUG");
-
- if (dstr)
- blkid_debug_mask = strtoul(dstr, 0, 0);
- blkid_debug_mask |= DEBUG_INIT;
- }
-#endif
-
- DBG(DEBUG_CACHE, printf("creating blkid cache (using %s)\n",
- filename ? filename : "default cache"));
-
- if (!(cache = (blkid_cache) calloc(1, sizeof(struct blkid_struct_cache))))
- return -BLKID_ERR_MEM;
-
- INIT_LIST_HEAD(&cache->bic_devs);
- INIT_LIST_HEAD(&cache->bic_tags);
-
- if (filename && !strlen(filename))
- filename = 0;
- if (!filename && (getuid() == geteuid()))
- filename = getenv("BLKID_FILE");
- if (!filename)
- filename = BLKID_CACHE_FILE;
- cache->bic_filename = blkid_strdup(filename);
-
- blkid_read_cache(cache);
-
- *ret_cache = cache;
- return 0;
-}
-
-void blkid_put_cache(blkid_cache cache)
-{
- if (!cache)
- return;
-
- (void) blkid_flush_cache(cache);
-
- DBG(DEBUG_CACHE, printf("freeing cache struct\n"));
-
- /* DBG(DEBUG_CACHE, blkid_debug_dump_cache(cache)); */
-
- while (!list_empty(&cache->bic_devs)) {
- blkid_dev dev = list_entry(cache->bic_devs.next,
- struct blkid_struct_dev,
- bid_devs);
- blkid_free_dev(dev);
- }
-
- while (!list_empty(&cache->bic_tags)) {
- blkid_tag tag = list_entry(cache->bic_tags.next,
- struct blkid_struct_tag,
- bit_tags);
-
- while (!list_empty(&tag->bit_names)) {
- blkid_tag bad = list_entry(tag->bit_names.next,
- struct blkid_struct_tag,
- bit_names);
-
- DBG(DEBUG_CACHE, printf("warning: unfreed tag %s=%s\n",
- bad->bit_name, bad->bit_val));
- blkid_free_tag(bad);
- }
- blkid_free_tag(tag);
- }
- free(cache->bic_filename);
-
- free(cache);
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char** argv)
-{
- blkid_cache cache = NULL;
- int ret;
-
- blkid_debug_mask = DEBUG_ALL;
- if ((argc > 2)) {
- fprintf(stderr, "Usage: %s [filename]\n", argv[0]);
- exit(1);
- }
-
- if ((ret = blkid_get_cache(&cache, argv[1])) < 0) {
- fprintf(stderr, "error %d parsing cache file %s\n", ret,
- argv[1] ? argv[1] : BLKID_CACHE_FILE);
- exit(1);
- }
- if ((ret = blkid_get_cache(&cache, bb_dev_null)) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
- if ((ret = blkid_probe_all(cache) < 0))
- fprintf(stderr, "error probing devices\n");
-
- blkid_put_cache(cache);
-
- return ret;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dev.c - allocation/initialization/free routines for dev
- *
- * Copyright (C) 2001 Andreas Dilger
- * Copyright (C) 2003 Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "blkidP.h"
-
-blkid_dev blkid_new_dev(void)
-{
- blkid_dev dev;
-
- if (!(dev = (blkid_dev) calloc(1, sizeof(struct blkid_struct_dev))))
- return NULL;
-
- INIT_LIST_HEAD(&dev->bid_devs);
- INIT_LIST_HEAD(&dev->bid_tags);
-
- return dev;
-}
-
-void blkid_free_dev(blkid_dev dev)
-{
- if (!dev)
- return;
-
- DBG(DEBUG_DEV,
- printf(" freeing dev %s (%s)\n", dev->bid_name, dev->bid_type));
- DBG(DEBUG_DEV, blkid_debug_dump_dev(dev));
-
- list_del(&dev->bid_devs);
- while (!list_empty(&dev->bid_tags)) {
- blkid_tag tag = list_entry(dev->bid_tags.next,
- struct blkid_struct_tag,
- bit_tags);
- blkid_free_tag(tag);
- }
- if (dev->bid_name)
- free(dev->bid_name);
- free(dev);
-}
-
-/*
- * Given a blkid device, return its name
- */
-const char *blkid_dev_devname(blkid_dev dev)
-{
- return dev->bid_name;
-}
-
-#ifdef CONFIG_BLKID_DEBUG
-void blkid_debug_dump_dev(blkid_dev dev)
-{
- struct list_head *p;
-
- if (!dev) {
- printf(" dev: NULL\n");
- return;
- }
-
- printf(" dev: name = %s\n", dev->bid_name);
- printf(" dev: DEVNO=\"0x%0llx\"\n", dev->bid_devno);
- printf(" dev: TIME=\"%lu\"\n", dev->bid_time);
- printf(" dev: PRI=\"%d\"\n", dev->bid_pri);
- printf(" dev: flags = 0x%08X\n", dev->bid_flags);
-
- list_for_each(p, &dev->bid_tags) {
- blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
- if (tag)
- printf(" tag: %s=\"%s\"\n", tag->bit_name,
- tag->bit_val);
- else
- printf(" tag: NULL\n");
- }
- puts("");
-}
-#endif
-
-/*
- * dev iteration routines for the public libblkid interface.
- *
- * These routines do not expose the list.h implementation, which are a
- * contamination of the namespace, and which force us to reveal far, far
- * too much of our internal implemenation. I'm not convinced I want
- * to keep list.h in the long term, anyway. It's fine for kernel
- * programming, but performance is not the #1 priority for this
- * library, and I really don't like the tradeoff of type-safety for
- * performance for this application. [tytso:20030125.2007EST]
- */
-
-/*
- * This series of functions iterate over all devices in a blkid cache
- */
-#define DEV_ITERATE_MAGIC 0x01a5284c
-
-struct blkid_struct_dev_iterate {
- int magic;
- blkid_cache cache;
- struct list_head *p;
-};
-
-blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache)
-{
- blkid_dev_iterate iter;
-
- iter = xmalloc(sizeof(struct blkid_struct_dev_iterate));
- iter->magic = DEV_ITERATE_MAGIC;
- iter->cache = cache;
- iter->p = cache->bic_devs.next;
- return iter;
-}
-
-/*
- * Return 0 on success, -1 on error
- */
-extern int blkid_dev_next(blkid_dev_iterate iter,
- blkid_dev *dev)
-{
- *dev = 0;
- if (!iter || iter->magic != DEV_ITERATE_MAGIC ||
- iter->p == &iter->cache->bic_devs)
- return -1;
- *dev = list_entry(iter->p, struct blkid_struct_dev, bid_devs);
- iter->p = iter->p->next;
- return 0;
-}
-
-void blkid_dev_iterate_end(blkid_dev_iterate iter)
-{
- if (!iter || iter->magic != DEV_ITERATE_MAGIC)
- return;
- iter->magic = 0;
- free(iter);
-}
-
-#ifdef TEST_PROGRAM
-#ifdef HAVE_GETOPT_H
-#include <getopt.h>
-#else
-extern char *optarg;
-extern int optind;
-#endif
-
-void usage(char *prog)
-{
- fprintf(stderr, "Usage: %s [-f blkid_file] [-m debug_mask]\n", prog);
- fprintf(stderr, "\tList all devices and exit\n", prog);
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- blkid_dev_iterate iter;
- blkid_cache cache = NULL;
- blkid_dev dev;
- int c, ret;
- char *tmp;
- char *file = NULL;
- char *search_type = NULL;
- char *search_value = NULL;
-
- while ((c = getopt (argc, argv, "m:f:")) != EOF)
- switch (c) {
- case 'f':
- file = optarg;
- break;
- case 'm':
- blkid_debug_mask = strtoul (optarg, &tmp, 0);
- if (*tmp) {
- fprintf(stderr, "Invalid debug mask: %d\n",
- optarg);
- exit(1);
- }
- break;
- case '?':
- usage(argv[0]);
- }
- if (argc >= optind+2) {
- search_type = argv[optind];
- search_value = argv[optind+1];
- optind += 2;
- }
- if (argc != optind)
- usage(argv[0]);
-
- if ((ret = blkid_get_cache(&cache, file)) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
-
- iter = blkid_dev_iterate_begin(cache);
- if (search_type)
- blkid_dev_set_search(iter, search_type, search_value);
- while (blkid_dev_next(iter, &dev) == 0) {
- printf("Device: %s\n", blkid_dev_devname(dev));
- }
- blkid_dev_iterate_end(iter);
-
-
- blkid_put_cache(cache);
- return 0;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * devname.c - get a dev by its device inode name
- *
- * Copyright (C) Andries Brouwer
- * Copyright (C) 1999, 2000, 2001, 2002, 2003 Theodore Ts'o
- * Copyright (C) 2001 Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#include <sys/stat.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_SYS_MKDEV_H
-#include <sys/mkdev.h>
-#endif
-#include <time.h>
-
-#include "blkidP.h"
-
-/*
- * Find a dev struct in the cache by device name, if available.
- *
- * If there is no entry with the specified device name, and the create
- * flag is set, then create an empty device entry.
- */
-blkid_dev blkid_get_dev(blkid_cache cache, const char *devname, int flags)
-{
- blkid_dev dev = NULL, tmp;
- struct list_head *p;
-
- if (!cache || !devname)
- return NULL;
-
- list_for_each(p, &cache->bic_devs) {
- tmp = list_entry(p, struct blkid_struct_dev, bid_devs);
- if (strcmp(tmp->bid_name, devname))
- continue;
-
- DBG(DEBUG_DEVNAME,
- printf("found devname %s in cache\n", tmp->bid_name));
- dev = tmp;
- break;
- }
-
- if (!dev && (flags & BLKID_DEV_CREATE)) {
- dev = blkid_new_dev();
- if (!dev)
- return NULL;
- dev->bid_name = blkid_strdup(devname);
- dev->bid_cache = cache;
- list_add_tail(&dev->bid_devs, &cache->bic_devs);
- cache->bic_flags |= BLKID_BIC_FL_CHANGED;
- }
-
- if (flags & BLKID_DEV_VERIFY)
- dev = blkid_verify(cache, dev);
- return dev;
-}
-
-/*
- * Probe a single block device to add to the device cache.
- */
-static void probe_one(blkid_cache cache, const char *ptname,
- dev_t devno, int pri)
-{
- blkid_dev dev = NULL;
- struct list_head *p;
- const char **dir;
- char *devname = NULL;
-
- /* See if we already have this device number in the cache. */
- list_for_each(p, &cache->bic_devs) {
- blkid_dev tmp = list_entry(p, struct blkid_struct_dev,
- bid_devs);
- if (tmp->bid_devno == devno) {
- dev = blkid_verify(cache, tmp);
- break;
- }
- }
- if (dev && dev->bid_devno == devno)
- goto set_pri;
-
- /*
- * Take a quick look at /dev/ptname for the device number. We check
- * all of the likely device directories. If we don't find it, or if
- * the stat information doesn't check out, use blkid_devno_to_devname()
- * to find it via an exhaustive search for the device major/minor.
- */
- for (dir = blkid_devdirs; *dir; dir++) {
- struct stat st;
- char device[256];
-
- sprintf(device, "%s/%s", *dir, ptname);
- if ((dev = blkid_get_dev(cache, device, BLKID_DEV_FIND)) &&
- dev->bid_devno == devno)
- goto set_pri;
-
- if (stat(device, &st) == 0 && S_ISBLK(st.st_mode) &&
- st.st_rdev == devno) {
- devname = blkid_strdup(device);
- break;
- }
- }
- if (!devname) {
- devname = blkid_devno_to_devname(devno);
- if (!devname)
- return;
- }
- dev = blkid_get_dev(cache, devname, BLKID_DEV_NORMAL);
- free(devname);
-
-set_pri:
- if (!pri && !strncmp(ptname, "md", 2))
- pri = BLKID_PRI_MD;
- if (dev)
- dev->bid_pri = pri;
- return;
-}
-
-#define PROC_PARTITIONS "/proc/partitions"
-#define VG_DIR "/proc/lvm/VGs"
-
-/*
- * This function initializes the UUID cache with devices from the LVM
- * proc hierarchy. We currently depend on the names of the LVM
- * hierarchy giving us the device structure in /dev. (XXX is this a
- * safe thing to do?)
- */
-#ifdef VG_DIR
-#include <dirent.h>
-static dev_t lvm_get_devno(const char *lvm_device)
-{
- FILE *lvf;
- char buf[1024];
- int ma, mi;
- dev_t ret = 0;
-
- DBG(DEBUG_DEVNAME, printf("opening %s\n", lvm_device));
- if ((lvf = fopen(lvm_device, "r")) == NULL) {
- DBG(DEBUG_DEVNAME, printf("%s: (%d) %s\n", lvm_device, errno,
- strerror(errno)));
- return 0;
- }
-
- while (fgets(buf, sizeof(buf), lvf)) {
- if (sscanf(buf, "device: %d:%d", &ma, &mi) == 2) {
- ret = makedev(ma, mi);
- break;
- }
- }
- fclose(lvf);
-
- return ret;
-}
-
-static void lvm_probe_all(blkid_cache cache)
-{
- DIR *vg_list;
- struct dirent *vg_iter;
- int vg_len = strlen(VG_DIR);
- dev_t dev;
-
- if ((vg_list = opendir(VG_DIR)) == NULL)
- return;
-
- DBG(DEBUG_DEVNAME, printf("probing LVM devices under %s\n", VG_DIR));
-
- while ((vg_iter = readdir(vg_list)) != NULL) {
- DIR *lv_list;
- char *vdirname;
- char *vg_name;
- struct dirent *lv_iter;
-
- vg_name = vg_iter->d_name;
- if (LONE_CHAR(vg_name, '.') || !strcmp(vg_name, ".."))
- continue;
- vdirname = xmalloc(vg_len + strlen(vg_name) + 8);
- sprintf(vdirname, "%s/%s/LVs", VG_DIR, vg_name);
-
- lv_list = opendir(vdirname);
- free(vdirname);
- if (lv_list == NULL)
- continue;
-
- while ((lv_iter = readdir(lv_list)) != NULL) {
- char *lv_name, *lvm_device;
-
- lv_name = lv_iter->d_name;
- if (LONE_CHAR(lv_name, '.') || !strcmp(lv_name, ".."))
- continue;
-
- lvm_device = xmalloc(vg_len + strlen(vg_name) +
- strlen(lv_name) + 8);
- sprintf(lvm_device, "%s/%s/LVs/%s", VG_DIR, vg_name,
- lv_name);
- dev = lvm_get_devno(lvm_device);
- sprintf(lvm_device, "%s/%s", vg_name, lv_name);
- DBG(DEBUG_DEVNAME, printf("LVM dev %s: devno 0x%04X\n",
- lvm_device,
- (unsigned int) dev));
- probe_one(cache, lvm_device, dev, BLKID_PRI_LVM);
- free(lvm_device);
- }
- closedir(lv_list);
- }
- closedir(vg_list);
-}
-#endif
-
-#define PROC_EVMS_VOLUMES "/proc/evms/volumes"
-
-static int
-evms_probe_all(blkid_cache cache)
-{
- char line[100];
- int ma, mi, sz, num = 0;
- FILE *procpt;
- char device[110];
-
- procpt = fopen(PROC_EVMS_VOLUMES, "r");
- if (!procpt)
- return 0;
- while (fgets(line, sizeof(line), procpt)) {
- if (sscanf (line, " %d %d %d %*s %*s %[^\n ]",
- &ma, &mi, &sz, device) != 4)
- continue;
-
- DBG(DEBUG_DEVNAME, printf("Checking partition %s (%d, %d)\n",
- device, ma, mi));
-
- probe_one(cache, device, makedev(ma, mi), BLKID_PRI_EVMS);
- num++;
- }
- fclose(procpt);
- return num;
-}
-
-/*
- * Read the device data for all available block devices in the system.
- */
-int blkid_probe_all(blkid_cache cache)
-{
- FILE *proc;
- char line[1024];
- char ptname0[128], ptname1[128], *ptname = 0;
- char *ptnames[2];
- dev_t devs[2];
- int ma, mi;
- unsigned long long sz;
- int lens[2] = { 0, 0 };
- int which = 0, last = 0;
-
- ptnames[0] = ptname0;
- ptnames[1] = ptname1;
-
- if (!cache)
- return -BLKID_ERR_PARAM;
-
- if (cache->bic_flags & BLKID_BIC_FL_PROBED &&
- time(0) - cache->bic_time < BLKID_PROBE_INTERVAL)
- return 0;
-
- blkid_read_cache(cache);
- evms_probe_all(cache);
-#ifdef VG_DIR
- lvm_probe_all(cache);
-#endif
-
- proc = fopen(PROC_PARTITIONS, "r");
- if (!proc)
- return -BLKID_ERR_PROC;
-
- while (fgets(line, sizeof(line), proc)) {
- last = which;
- which ^= 1;
- ptname = ptnames[which];
-
- if (sscanf(line, " %d %d %llu %128[^\n ]",
- &ma, &mi, &sz, ptname) != 4)
- continue;
- devs[which] = makedev(ma, mi);
-
- DBG(DEBUG_DEVNAME, printf("read partition name %s\n", ptname));
-
- /* Skip whole disk devs unless they have no partitions
- * If we don't have a partition on this dev, also
- * check previous dev to see if it didn't have a partn.
- * heuristic: partition name ends in a digit.
- *
- * Skip extended partitions.
- * heuristic: size is 1
- *
- * FIXME: skip /dev/{ida,cciss,rd} whole-disk devs
- */
-
- lens[which] = strlen(ptname);
- if (isdigit(ptname[lens[which] - 1])) {
- DBG(DEBUG_DEVNAME,
- printf("partition dev %s, devno 0x%04X\n",
- ptname, (unsigned int) devs[which]));
-
- if (sz > 1)
- probe_one(cache, ptname, devs[which], 0);
- lens[which] = 0;
- lens[last] = 0;
- } else if (lens[last] && strncmp(ptnames[last], ptname,
- lens[last])) {
- DBG(DEBUG_DEVNAME,
- printf("whole dev %s, devno 0x%04X\n",
- ptnames[last], (unsigned int) devs[last]));
- probe_one(cache, ptnames[last], devs[last], 0);
- lens[last] = 0;
- }
- }
-
- /* Handle the last device if it wasn't partitioned */
- if (lens[which])
- probe_one(cache, ptname, devs[which], 0);
-
- fclose(proc);
-
- cache->bic_time = time(0);
- cache->bic_flags |= BLKID_BIC_FL_PROBED;
- blkid_flush_cache(cache);
- return 0;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_cache cache = NULL;
- int ret;
-
- blkid_debug_mask = DEBUG_ALL;
- if (argc != 1) {
- fprintf(stderr, "Usage: %s\n"
- "Probe all devices and exit\n", argv[0]);
- exit(1);
- }
- if ((ret = blkid_get_cache(&cache, bb_dev_null)) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
- if (blkid_probe_all(cache) < 0)
- printf("%s: error probing devices\n", argv[0]);
-
- blkid_put_cache(cache);
- return 0;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * devno.c - find a particular device by its device number (major/minor)
- *
- * Copyright (C) 2000, 2001, 2003 Theodore Ts'o
- * Copyright (C) 2001 Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#include <sys/stat.h>
-#include <dirent.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_SYS_MKDEV_H
-#include <sys/mkdev.h>
-#endif
-
-#include "blkidP.h"
-
-struct dir_list {
- char *name;
- struct dir_list *next;
-};
-
-char *blkid_strndup(const char *s, int length)
-{
- char *ret;
-
- if (!s)
- return NULL;
-
- if (!length)
- length = strlen(s);
-
- ret = xmalloc(length + 1);
- strncpy(ret, s, length);
- ret[length] = '\0';
- return ret;
-}
-
-char *blkid_strdup(const char *s)
-{
- return blkid_strndup(s, 0);
-}
-
-/*
- * This function adds an entry to the directory list
- */
-static void add_to_dirlist(const char *name, struct dir_list **list)
-{
- struct dir_list *dp;
-
- dp = xmalloc(sizeof(struct dir_list));
- dp->name = blkid_strdup(name);
- dp->next = *list;
- *list = dp;
-}
-
-/*
- * This function frees a directory list
- */
-static void free_dirlist(struct dir_list **list)
-{
- struct dir_list *dp, *next;
-
- for (dp = *list; dp; dp = next) {
- next = dp->next;
- free(dp->name);
- free(dp);
- }
- *list = NULL;
-}
-
-static void scan_dir(char *dir_name, dev_t devno, struct dir_list **list,
- char **devname)
-{
- DIR *dir;
- struct dirent *dp;
- char path[1024];
- int dirlen;
- struct stat st;
-
- if ((dir = opendir(dir_name)) == NULL)
- return;
- dirlen = strlen(dir_name) + 2;
- while ((dp = readdir(dir)) != 0) {
- if (dirlen + strlen(dp->d_name) >= sizeof(path))
- continue;
-
- if (dp->d_name[0] == '.' &&
- ((dp->d_name[1] == 0) ||
- ((dp->d_name[1] == '.') && (dp->d_name[2] == 0))))
- continue;
-
- sprintf(path, "%s/%s", dir_name, dp->d_name);
- if (stat(path, &st) < 0)
- continue;
-
- if (S_ISDIR(st.st_mode))
- add_to_dirlist(path, list);
- else if (S_ISBLK(st.st_mode) && st.st_rdev == devno) {
- *devname = blkid_strdup(path);
- DBG(DEBUG_DEVNO,
- printf("found 0x%llx at %s (%p)\n", devno,
- path, *devname));
- break;
- }
- }
- closedir(dir);
- return;
-}
-
-/* Directories where we will try to search for device numbers */
-const char *blkid_devdirs[] = { "/devices", "/devfs", "/dev", NULL };
-
-/*
- * This function finds the pathname to a block device with a given
- * device number. It returns a pointer to allocated memory to the
- * pathname on success, and NULL on failure.
- */
-char *blkid_devno_to_devname(dev_t devno)
-{
- struct dir_list *list = NULL, *new_list = NULL;
- char *devname = NULL;
- const char **dir;
-
- /*
- * Add the starting directories to search in reverse order of
- * importance, since we are using a stack...
- */
- for (dir = blkid_devdirs; *dir; dir++)
- add_to_dirlist(*dir, &list);
-
- while (list) {
- struct dir_list *current = list;
-
- list = list->next;
- DBG(DEBUG_DEVNO, printf("directory %s\n", current->name));
- scan_dir(current->name, devno, &new_list, &devname);
- free(current->name);
- free(current);
- if (devname)
- break;
- /*
- * If we're done checking at this level, descend to
- * the next level of subdirectories. (breadth-first)
- */
- if (list == NULL) {
- list = new_list;
- new_list = NULL;
- }
- }
- free_dirlist(&list);
- free_dirlist(&new_list);
-
- if (!devname) {
- DBG(DEBUG_DEVNO,
- printf("blkid: cannot find devno 0x%04lx\n",
- (unsigned long) devno));
- } else {
- DBG(DEBUG_DEVNO,
- printf("found devno 0x%04llx as %s\n", devno, devname));
- }
-
-
- return devname;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char** argv)
-{
- char *devname, *tmp;
- int major, minor;
- dev_t devno;
- const char *errmsg = "Cannot parse %s: %s\n";
-
- blkid_debug_mask = DEBUG_ALL;
- if ((argc != 2) && (argc != 3)) {
- fprintf(stderr, "Usage:\t%s device_number\n\t%s major minor\n"
- "Resolve a device number to a device name\n",
- argv[0], argv[0]);
- exit(1);
- }
- if (argc == 2) {
- devno = strtoul(argv[1], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "device number", argv[1]);
- exit(1);
- }
- } else {
- major = strtoul(argv[1], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "major number", argv[1]);
- exit(1);
- }
- minor = strtoul(argv[2], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "minor number", argv[2]);
- exit(1);
- }
- devno = makedev(major, minor);
- }
- printf("Looking for device 0x%04Lx\n", devno);
- devname = blkid_devno_to_devname(devno);
- free(devname);
- return 0;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-
-#include "list.h"
-
-/*
- * Insert a new entry between two known consecutive entries.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-void __list_add(struct list_head * add,
- struct list_head * prev,
- struct list_head * next)
-{
- next->prev = add;
- add->next = next;
- add->prev = prev;
- prev->next = add;
-}
-
-/*
- * list_add - add a new entry
- * @add: new entry to be added
- * @head: list head to add it after
- *
- * Insert a new entry after the specified head.
- * This is good for implementing stacks.
- */
-void list_add(struct list_head *add, struct list_head *head)
-{
- __list_add(add, head, head->next);
-}
-
-/*
- * list_add_tail - add a new entry
- * @add: new entry to be added
- * @head: list head to add it before
- *
- * Insert a new entry before the specified head.
- * This is useful for implementing queues.
- */
-void list_add_tail(struct list_head *add, struct list_head *head)
-{
- __list_add(add, head->prev, head);
-}
-
-/*
- * Delete a list entry by making the prev/next entries
- * point to each other.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-void __list_del(struct list_head * prev, struct list_head * next)
-{
- next->prev = prev;
- prev->next = next;
-}
-
-/*
- * list_del - deletes entry from list.
- * @entry: the element to delete from the list.
- *
- * list_empty() on @entry does not return true after this, @entry is
- * in an undefined state.
- */
-void list_del(struct list_head *entry)
-{
- __list_del(entry->prev, entry->next);
-}
-
-/*
- * list_del_init - deletes entry from list and reinitialize it.
- * @entry: the element to delete from the list.
- */
-void list_del_init(struct list_head *entry)
-{
- __list_del(entry->prev, entry->next);
- INIT_LIST_HEAD(entry);
-}
-
-/*
- * list_empty - tests whether a list is empty
- * @head: the list to test.
- */
-int list_empty(struct list_head *head)
-{
- return head->next == head;
-}
-
-/*
- * list_splice - join two lists
- * @list: the new list to add.
- * @head: the place to add it in the first list.
- */
-void list_splice(struct list_head *list, struct list_head *head)
-{
- struct list_head *first = list->next;
-
- if (first != list) {
- struct list_head *last = list->prev;
- struct list_head *at = head->next;
-
- first->prev = head;
- head->next = first;
-
- last->next = at;
- at->prev = last;
- }
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-#if !defined(_BLKID_LIST_H) && !defined(LIST_HEAD)
-#define _BLKID_LIST_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Simple doubly linked list implementation.
- *
- * Some of the internal functions ("__xxx") are useful when
- * manipulating whole lists rather than single entries, as
- * sometimes we already know the next/prev entries and we can
- * generate better code by using them directly rather than
- * using the generic single-entry routines.
- */
-
-struct list_head {
- struct list_head *next, *prev;
-};
-
-#define LIST_HEAD_INIT(name) { &(name), &(name) }
-
-#define LIST_HEAD(name) \
- struct list_head name = LIST_HEAD_INIT(name)
-
-#define INIT_LIST_HEAD(ptr) do { \
- (ptr)->next = (ptr); (ptr)->prev = (ptr); \
-} while (0)
-
-void __list_add(struct list_head * add, struct list_head * prev, struct list_head * next);
-void list_add(struct list_head *add, struct list_head *head);
-void list_add_tail(struct list_head *add, struct list_head *head);
-void __list_del(struct list_head * prev, struct list_head * next);
-void list_del(struct list_head *entry);
-void list_del_init(struct list_head *entry);
-int list_empty(struct list_head *head);
-void list_splice(struct list_head *list, struct list_head *head);
-
-/**
- * list_entry - get the struct for this entry
- * @ptr: the &struct list_head pointer.
- * @type: the type of the struct this is embedded in.
- * @member: the name of the list_struct within the struct.
- */
-#define list_entry(ptr, type, member) \
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
-
-/**
- * list_for_each - iterate over elements in a list
- * @pos: the &struct list_head to use as a loop counter.
- * @head: the head for your list.
- */
-#define list_for_each(pos, head) \
- for (pos = (head)->next; pos != (head); pos = pos->next)
-
-/**
- * list_for_each_safe - iterate over elements in a list, but don't dereference
- * pos after the body is done (in case it is freed)
- * @pos: the &struct list_head to use as a loop counter.
- * @pnext: the &struct list_head to use as a pointer to the next item.
- * @head: the head for your list (not included in iteration).
- */
-#define list_for_each_safe(pos, pnext, head) \
- for (pos = (head)->next, pnext = pos->next; pos != (head); \
- pos = pnext, pnext = pos->next)
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _BLKID_LIST_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * probe.c - identify a block device by its contents, and return a dev
- * struct with the details
- *
- * Copyright (C) 1999 by Andries Brouwer
- * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
- * Copyright (C) 2001 by Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_MKDEV_H
-#include <sys/mkdev.h>
-#endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include "blkidP.h"
-#include "../uuid/uuid.h"
-#include "probe.h"
-
-/*
- * This is a special case code to check for an MDRAID device. We do
- * this special since it requires checking for a superblock at the end
- * of the device.
- */
-static int check_mdraid(int fd, unsigned char *ret_uuid)
-{
- struct mdp_superblock_s *md;
- blkid_loff_t offset;
- char buf[4096];
-
- if (fd < 0)
- return -BLKID_ERR_PARAM;
-
- offset = (blkid_get_dev_size(fd) & ~((blkid_loff_t)65535)) - 65536;
-
- if (blkid_llseek(fd, offset, 0) < 0 ||
- read(fd, buf, 4096) != 4096)
- return -BLKID_ERR_IO;
-
- /* Check for magic number */
- if (memcmp("\251+N\374", buf, 4))
- return -BLKID_ERR_PARAM;
-
- if (!ret_uuid)
- return 0;
- *ret_uuid = 0;
-
- /* The MD UUID is not contiguous in the superblock, make it so */
- md = (struct mdp_superblock_s *)buf;
- if (md->set_uuid0 || md->set_uuid1 || md->set_uuid2 || md->set_uuid3) {
- memcpy(ret_uuid, &md->set_uuid0, 4);
- memcpy(ret_uuid, &md->set_uuid1, 12);
- }
- return 0;
-}
-
-static void set_uuid(blkid_dev dev, uuid_t uuid)
-{
- char str[37];
-
- if (!uuid_is_null(uuid)) {
- uuid_unparse(uuid, str);
- blkid_set_tag(dev, "UUID", str, sizeof(str));
- }
-}
-
-static void get_ext2_info(blkid_dev dev, unsigned char *buf)
-{
- struct ext2_super_block *es = (struct ext2_super_block *) buf;
- const char *label = 0;
-
- DBG(DEBUG_PROBE, printf("ext2_sb.compat = %08X:%08X:%08X\n",
- blkid_le32(es->s_feature_compat),
- blkid_le32(es->s_feature_incompat),
- blkid_le32(es->s_feature_ro_compat)));
-
- if (strlen(es->s_volume_name))
- label = es->s_volume_name;
- blkid_set_tag(dev, "LABEL", label, sizeof(es->s_volume_name));
-
- set_uuid(dev, es->s_uuid);
-}
-
-static int probe_ext3(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ext2_super_block *es;
-
- es = (struct ext2_super_block *)buf;
-
- /* Distinguish between jbd and ext2/3 fs */
- if (blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
- return -BLKID_ERR_PARAM;
-
- /* Distinguish between ext3 and ext2 */
- if (!(blkid_le32(es->s_feature_compat) &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- return -BLKID_ERR_PARAM;
-
- get_ext2_info(dev, buf);
-
- blkid_set_tag(dev, "SEC_TYPE", "ext2", sizeof("ext2"));
-
- return 0;
-}
-
-static int probe_ext2(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ext2_super_block *es;
-
- es = (struct ext2_super_block *)buf;
-
- /* Distinguish between jbd and ext2/3 fs */
- if (blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
- return -BLKID_ERR_PARAM;
-
- get_ext2_info(dev, buf);
-
- return 0;
-}
-
-static int probe_jbd(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ext2_super_block *es = (struct ext2_super_block *) buf;
-
- if (!(blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV))
- return -BLKID_ERR_PARAM;
-
- get_ext2_info(dev, buf);
-
- return 0;
-}
-
-static int probe_vfat(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct vfat_super_block *vs;
- char serno[10];
- const char *label = 0;
- int label_len = 0;
-
- vs = (struct vfat_super_block *)buf;
-
- if (strncmp(vs->vs_label, "NO NAME", 7)) {
- char *end = vs->vs_label + sizeof(vs->vs_label) - 1;
-
- while (*end == ' ' && end >= vs->vs_label)
- --end;
- if (end >= vs->vs_label) {
- label = vs->vs_label;
- label_len = end - vs->vs_label + 1;
- }
- }
-
- /* We can't just print them as %04X, because they are unaligned */
- sprintf(serno, "%02X%02X-%02X%02X", vs->vs_serno[3], vs->vs_serno[2],
- vs->vs_serno[1], vs->vs_serno[0]);
- blkid_set_tag(dev, "LABEL", label, label_len);
- blkid_set_tag(dev, "UUID", serno, sizeof(serno));
-
- return 0;
-}
-
-static int probe_msdos(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct msdos_super_block *ms = (struct msdos_super_block *) buf;
- char serno[10];
- const char *label = 0;
- int label_len = 0;
-
- if (strncmp(ms->ms_label, "NO NAME", 7)) {
- char *end = ms->ms_label + sizeof(ms->ms_label) - 1;
-
- while (*end == ' ' && end >= ms->ms_label)
- --end;
- if (end >= ms->ms_label) {
- label = ms->ms_label;
- label_len = end - ms->ms_label + 1;
- }
- }
-
- /* We can't just print them as %04X, because they are unaligned */
- sprintf(serno, "%02X%02X-%02X%02X", ms->ms_serno[3], ms->ms_serno[2],
- ms->ms_serno[1], ms->ms_serno[0]);
- blkid_set_tag(dev, "UUID", serno, 0);
- blkid_set_tag(dev, "LABEL", label, label_len);
- blkid_set_tag(dev, "SEC_TYPE", "msdos", sizeof("msdos"));
-
- return 0;
-}
-
-static int probe_xfs(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct xfs_super_block *xs;
- const char *label = 0;
-
- xs = (struct xfs_super_block *)buf;
-
- if (strlen(xs->xs_fname))
- label = xs->xs_fname;
- blkid_set_tag(dev, "LABEL", label, sizeof(xs->xs_fname));
- set_uuid(dev, xs->xs_uuid);
- return 0;
-}
-
-static int probe_reiserfs(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id, unsigned char *buf)
-{
- struct reiserfs_super_block *rs = (struct reiserfs_super_block *) buf;
- unsigned int blocksize;
- const char *label = 0;
-
- blocksize = blkid_le16(rs->rs_blocksize);
-
- /* If the superblock is inside the journal, we have the wrong one */
- if (id->bim_kboff/(blocksize>>10) > blkid_le32(rs->rs_journal_block))
- return -BLKID_ERR_BIG;
-
- /* LABEL/UUID are only valid for later versions of Reiserfs v3.6. */
- if (!strcmp(id->bim_magic, "ReIsEr2Fs") ||
- !strcmp(id->bim_magic, "ReIsEr3Fs")) {
- if (strlen(rs->rs_label))
- label = rs->rs_label;
- set_uuid(dev, rs->rs_uuid);
- }
- blkid_set_tag(dev, "LABEL", label, sizeof(rs->rs_label));
-
- return 0;
-}
-
-static int probe_jfs(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct jfs_super_block *js;
- const char *label = 0;
-
- js = (struct jfs_super_block *)buf;
-
- if (strlen((char *) js->js_label))
- label = (char *) js->js_label;
- blkid_set_tag(dev, "LABEL", label, sizeof(js->js_label));
- set_uuid(dev, js->js_uuid);
- return 0;
-}
-
-static int probe_romfs(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct romfs_super_block *ros;
- const char *label = 0;
-
- ros = (struct romfs_super_block *)buf;
-
- if (strlen((char *) ros->ros_volume))
- label = (char *) ros->ros_volume;
- blkid_set_tag(dev, "LABEL", label, 0);
- return 0;
-}
-
-static int probe_cramfs(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct cramfs_super_block *csb;
- const char *label = 0;
-
- csb = (struct cramfs_super_block *)buf;
-
- if (strlen((char *) csb->name))
- label = (char *) csb->name;
- blkid_set_tag(dev, "LABEL", label, 0);
- return 0;
-}
-
-static int probe_swap0(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf __BLKID_ATTR((unused)))
-{
- blkid_set_tag(dev, "UUID", 0, 0);
- blkid_set_tag(dev, "LABEL", 0, 0);
- return 0;
-}
-
-static int probe_swap1(int fd,
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf __BLKID_ATTR((unused)))
-{
- struct swap_id_block *sws;
-
- probe_swap0(fd, cache, dev, id, buf);
- /*
- * Version 1 swap headers are always located at offset of 1024
- * bytes, although the swap signature itself is located at the
- * end of the page (which may vary depending on hardware
- * pagesize).
- */
- if (lseek(fd, 1024, SEEK_SET) < 0) return 1;
- sws = xmalloc(1024);
- if (read(fd, sws, 1024) != 1024) {
- free(sws);
- return 1;
- }
-
- /* arbitrary sanity check.. is there any garbage down there? */
- if (sws->sws_pad[32] == 0 && sws->sws_pad[33] == 0) {
- if (sws->sws_volume[0])
- blkid_set_tag(dev, "LABEL", (const char*)sws->sws_volume,
- sizeof(sws->sws_volume));
- if (sws->sws_uuid[0])
- set_uuid(dev, sws->sws_uuid);
- }
- free(sws);
-
- return 0;
-}
-
-static const char
-* const udf_magic[] = { "BEA01", "BOOT2", "CD001", "CDW02", "NSR02",
- "NSR03", "TEA01", 0 };
-
-static int probe_udf(int fd, blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev __BLKID_ATTR((unused)),
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf __BLKID_ATTR((unused)))
-{
- int j, bs;
- struct iso_volume_descriptor isosb;
- const char * const * m;
-
- /* determine the block size by scanning in 2K increments
- (block sizes larger than 2K will be null padded) */
- for (bs = 1; bs < 16; bs++) {
- lseek(fd, bs*2048+32768, SEEK_SET);
- if (read(fd, (char *)&isosb, sizeof(isosb)) != sizeof(isosb))
- return 1;
- if (isosb.id[0])
- break;
- }
-
- /* Scan up to another 64 blocks looking for additional VSD's */
- for (j = 1; j < 64; j++) {
- if (j > 1) {
- lseek(fd, j*bs*2048+32768, SEEK_SET);
- if (read(fd, (char *)&isosb, sizeof(isosb))
- != sizeof(isosb))
- return 1;
- }
- /* If we find NSR0x then call it udf:
- NSR01 for UDF 1.00
- NSR02 for UDF 1.50
- NSR03 for UDF 2.00 */
- if (!strncmp(isosb.id, "NSR0", 4))
- return 0;
- for (m = udf_magic; *m; m++)
- if (!strncmp(*m, isosb.id, 5))
- break;
- if (*m == 0)
- return 1;
- }
- return 1;
-}
-
-static int probe_ocfs(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ocfs_volume_header ovh;
- struct ocfs_volume_label ovl;
- __u32 major;
-
- memcpy(&ovh, buf, sizeof(ovh));
- memcpy(&ovl, buf+512, sizeof(ovl));
-
- major = ocfsmajor(ovh);
- if (major == 1)
- blkid_set_tag(dev,"SEC_TYPE","ocfs1",sizeof("ocfs1"));
- else if (major >= 9)
- blkid_set_tag(dev,"SEC_TYPE","ntocfs",sizeof("ntocfs"));
-
- blkid_set_tag(dev, "LABEL", (const char*)ovl.label, ocfslabellen(ovl));
- blkid_set_tag(dev, "MOUNT", (const char*)ovh.mount, ocfsmountlen(ovh));
- set_uuid(dev, ovl.vol_id);
- return 0;
-}
-
-static int probe_ocfs2(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ocfs2_super_block *osb;
-
- osb = (struct ocfs2_super_block *)buf;
-
- blkid_set_tag(dev, "LABEL", (const char*)osb->s_label, sizeof(osb->s_label));
- set_uuid(dev, osb->s_uuid);
- return 0;
-}
-
-static int probe_oracleasm(int fd __BLKID_ATTR((unused)),
- blkid_cache cache __BLKID_ATTR((unused)),
- blkid_dev dev,
- const struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct oracle_asm_disk_label *dl;
-
- dl = (struct oracle_asm_disk_label *)buf;
-
- blkid_set_tag(dev, "LABEL", dl->dl_id, sizeof(dl->dl_id));
- return 0;
-}
-
-/*
- * BLKID_BLK_OFFS is at least as large as the highest bim_kboff defined
- * in the type_array table below + bim_kbalign.
- *
- * When probing for a lot of magics, we handle everything in 1kB buffers so
- * that we don't have to worry about reading each combination of block sizes.
- */
-#define BLKID_BLK_OFFS 64 /* currently reiserfs */
-
-/*
- * Various filesystem magics that we can check for. Note that kboff and
- * sboff are in kilobytes and bytes respectively. All magics are in
- * byte strings so we don't worry about endian issues.
- */
-static const struct blkid_magic type_array[] = {
-/* type kboff sboff len magic probe */
- { "oracleasm", 0, 32, 8, "ORCLDISK", probe_oracleasm },
- { "ntfs", 0, 3, 8, "NTFS ", 0 },
- { "jbd", 1, 0x38, 2, "\123\357", probe_jbd },
- { "ext3", 1, 0x38, 2, "\123\357", probe_ext3 },
- { "ext2", 1, 0x38, 2, "\123\357", probe_ext2 },
- { "reiserfs", 8, 0x34, 8, "ReIsErFs", probe_reiserfs },
- { "reiserfs", 64, 0x34, 9, "ReIsEr2Fs", probe_reiserfs },
- { "reiserfs", 64, 0x34, 9, "ReIsEr3Fs", probe_reiserfs },
- { "reiserfs", 64, 0x34, 8, "ReIsErFs", probe_reiserfs },
- { "reiserfs", 8, 20, 8, "ReIsErFs", probe_reiserfs },
- { "vfat", 0, 0x52, 5, "MSWIN", probe_vfat },
- { "vfat", 0, 0x52, 8, "FAT32 ", probe_vfat },
- { "vfat", 0, 0x36, 5, "MSDOS", probe_msdos },
- { "vfat", 0, 0x36, 8, "FAT16 ", probe_msdos },
- { "vfat", 0, 0x36, 8, "FAT12 ", probe_msdos },
- { "minix", 1, 0x10, 2, "\177\023", 0 },
- { "minix", 1, 0x10, 2, "\217\023", 0 },
- { "minix", 1, 0x10, 2, "\150\044", 0 },
- { "minix", 1, 0x10, 2, "\170\044", 0 },
- { "vxfs", 1, 0, 4, "\365\374\001\245", 0 },
- { "xfs", 0, 0, 4, "XFSB", probe_xfs },
- { "romfs", 0, 0, 8, "-rom1fs-", probe_romfs },
- { "bfs", 0, 0, 4, "\316\372\173\033", 0 },
- { "cramfs", 0, 0, 4, "E=\315\050", probe_cramfs },
- { "qnx4", 0, 4, 6, "QNX4FS", 0 },
- { "udf", 32, 1, 5, "BEA01", probe_udf },
- { "udf", 32, 1, 5, "BOOT2", probe_udf },
- { "udf", 32, 1, 5, "CD001", probe_udf },
- { "udf", 32, 1, 5, "CDW02", probe_udf },
- { "udf", 32, 1, 5, "NSR02", probe_udf },
- { "udf", 32, 1, 5, "NSR03", probe_udf },
- { "udf", 32, 1, 5, "TEA01", probe_udf },
- { "iso9660", 32, 1, 5, "CD001", 0 },
- { "iso9660", 32, 9, 5, "CDROM", 0 },
- { "jfs", 32, 0, 4, "JFS1", probe_jfs },
- { "hfs", 1, 0, 2, "BD", 0 },
- { "ufs", 8, 0x55c, 4, "T\031\001\000", 0 },
- { "hpfs", 8, 0, 4, "I\350\225\371", 0 },
- { "sysv", 0, 0x3f8, 4, "\020~\030\375", 0 },
- { "swap", 0, 0xff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0xff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swap", 0, 0x1ff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0x1ff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swap", 0, 0x3ff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0x3ff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swap", 0, 0x7ff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0x7ff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swap", 0, 0xfff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0xfff6, 10, "SWAPSPACE2", probe_swap1 },
- { "ocfs", 0, 8, 9, "OracleCFS", probe_ocfs },
- { "ocfs2", 1, 0, 6, "OCFSV2", probe_ocfs2 },
- { "ocfs2", 2, 0, 6, "OCFSV2", probe_ocfs2 },
- { "ocfs2", 4, 0, 6, "OCFSV2", probe_ocfs2 },
- { "ocfs2", 8, 0, 6, "OCFSV2", probe_ocfs2 },
- { NULL, 0, 0, 0, NULL, NULL }
-};
-
-/*
- * Verify that the data in dev is consistent with what is on the actual
- * block device (using the devname field only). Normally this will be
- * called when finding items in the cache, but for long running processes
- * is also desirable to revalidate an item before use.
- *
- * If we are unable to revalidate the data, we return the old data and
- * do not set the BLKID_BID_FL_VERIFIED flag on it.
- */
-blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev)
-{
- const struct blkid_magic *id;
- unsigned char *bufs[BLKID_BLK_OFFS + 1], *buf;
- const char *type;
- struct stat st;
- time_t diff, now;
- int fd, idx;
-
- if (!dev)
- return NULL;
-
- now = time(0);
- diff = now - dev->bid_time;
-
- if ((now < dev->bid_time) ||
- (diff < BLKID_PROBE_MIN) ||
- (dev->bid_flags & BLKID_BID_FL_VERIFIED &&
- diff < BLKID_PROBE_INTERVAL))
- return dev;
-
- DBG(DEBUG_PROBE,
- printf("need to revalidate %s (time since last check %lu)\n",
- dev->bid_name, diff));
-
- if (((fd = open(dev->bid_name, O_RDONLY)) < 0) ||
- (fstat(fd, &st) < 0)) {
- if (errno == ENXIO || errno == ENODEV || errno == ENOENT) {
- blkid_free_dev(dev);
- return NULL;
- }
- /* We don't have read permission, just return cache data. */
- DBG(DEBUG_PROBE,
- printf("returning unverified data for %s\n",
- dev->bid_name));
- return dev;
- }
-
- memset(bufs, 0, sizeof(bufs));
-
- /*
- * Iterate over the type array. If we already know the type,
- * then try that first. If it doesn't work, then blow away
- * the type information, and try again.
- *
- */
-try_again:
- type = 0;
- if (!dev->bid_type || !strcmp(dev->bid_type, "mdraid")) {
- uuid_t uuid;
-
- if (check_mdraid(fd, uuid) == 0) {
- set_uuid(dev, uuid);
- type = "mdraid";
- goto found_type;
- }
- }
- for (id = type_array; id->bim_type; id++) {
- if (dev->bid_type &&
- strcmp(id->bim_type, dev->bid_type))
- continue;
-
- idx = id->bim_kboff + (id->bim_sboff >> 10);
- if (idx > BLKID_BLK_OFFS || idx < 0)
- continue;
- buf = bufs[idx];
- if (!buf) {
- if (lseek(fd, idx << 10, SEEK_SET) < 0)
- continue;
-
- buf = xmalloc(1024);
-
- if (read(fd, buf, 1024) != 1024) {
- free(buf);
- continue;
- }
- bufs[idx] = buf;
- }
-
- if (memcmp(id->bim_magic, buf + (id->bim_sboff&0x3ff),
- id->bim_len))
- continue;
-
- if ((id->bim_probe == NULL) ||
- (id->bim_probe(fd, cache, dev, id, buf) == 0)) {
- type = id->bim_type;
- goto found_type;
- }
- }
-
- if (!id->bim_type && dev->bid_type) {
- /*
- * Zap the device filesystem type and try again
- */
- blkid_set_tag(dev, "TYPE", 0, 0);
- blkid_set_tag(dev, "SEC_TYPE", 0, 0);
- blkid_set_tag(dev, "LABEL", 0, 0);
- blkid_set_tag(dev, "UUID", 0, 0);
- goto try_again;
- }
-
- if (!dev->bid_type) {
- blkid_free_dev(dev);
- return NULL;
- }
-
-found_type:
- if (dev && type) {
- dev->bid_devno = st.st_rdev;
- dev->bid_time = time(0);
- dev->bid_flags |= BLKID_BID_FL_VERIFIED;
- cache->bic_flags |= BLKID_BIC_FL_CHANGED;
-
- blkid_set_tag(dev, "TYPE", type, 0);
-
- DBG(DEBUG_PROBE, printf("%s: devno 0x%04llx, type %s\n",
- dev->bid_name, st.st_rdev, type));
- }
-
- close(fd);
-
- return dev;
-}
-
-int blkid_known_fstype(const char *fstype)
-{
- const struct blkid_magic *id;
-
- for (id = type_array; id->bim_type; id++) {
- if (strcmp(fstype, id->bim_type) == 0)
- return 1;
- }
- return 0;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_dev dev;
- blkid_cache cache;
- int ret;
-
- blkid_debug_mask = DEBUG_ALL;
- if (argc != 2) {
- fprintf(stderr, "Usage: %s device\n"
- "Probe a single device to determine type\n", argv[0]);
- exit(1);
- }
- if ((ret = blkid_get_cache(&cache, bb_dev_null)) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
- dev = blkid_get_dev(cache, argv[1], BLKID_DEV_NORMAL);
- if (!dev) {
- printf("%s: %s has an unsupported type\n", argv[0], argv[1]);
- return 1;
- }
- printf("%s is type %s\n", argv[1], dev->bid_type ?
- dev->bid_type : "(null)");
- if (dev->bid_label)
- printf("\tlabel is '%s'\n", dev->bid_label);
- if (dev->bid_uuid)
- printf("\tuuid is %s\n", dev->bid_uuid);
-
- blkid_free_dev(dev);
- return 0;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * probe.h - constants and on-disk structures for extracting device data
- *
- * Copyright (C) 1999 by Andries Brouwer
- * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
- * Copyright (C) 2001 by Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#ifndef _BLKID_PROBE_H
-#define _BLKID_PROBE_H
-
-#include <linux/types.h>
-
-struct blkid_magic;
-
-typedef int (*blkid_probe_t)(int fd, blkid_cache cache, blkid_dev dev,
- const struct blkid_magic *id, unsigned char *buf);
-
-struct blkid_magic {
- const char *bim_type; /* type name for this magic */
- long bim_kboff; /* kilobyte offset of superblock */
- unsigned bim_sboff; /* byte offset within superblock */
- unsigned bim_len; /* length of magic */
- const char *bim_magic; /* magic string */
- blkid_probe_t bim_probe; /* probe function */
-};
-
-/*
- * Structures for each of the content types we want to extract information
- * from. We do not necessarily need the magic field here, because we have
- * already identified the content type before we get this far. It may still
- * be useful if there are probe functions which handle multiple content types.
- */
-struct ext2_super_block {
- __u32 s_inodes_count;
- __u32 s_blocks_count;
- __u32 s_r_blocks_count;
- __u32 s_free_blocks_count;
- __u32 s_free_inodes_count;
- __u32 s_first_data_block;
- __u32 s_log_block_size;
- __u32 s_dummy3[7];
- unsigned char s_magic[2];
- __u16 s_state;
- __u32 s_dummy5[8];
- __u32 s_feature_compat;
- __u32 s_feature_incompat;
- __u32 s_feature_ro_compat;
- unsigned char s_uuid[16];
- char s_volume_name[16];
-};
-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x00000004
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x00000004
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x00000008
-
-struct xfs_super_block {
- unsigned char xs_magic[4];
- __u32 xs_blocksize;
- __u64 xs_dblocks;
- __u64 xs_rblocks;
- __u32 xs_dummy1[2];
- unsigned char xs_uuid[16];
- __u32 xs_dummy2[15];
- char xs_fname[12];
- __u32 xs_dummy3[2];
- __u64 xs_icount;
- __u64 xs_ifree;
- __u64 xs_fdblocks;
-};
-
-struct reiserfs_super_block {
- __u32 rs_blocks_count;
- __u32 rs_free_blocks;
- __u32 rs_root_block;
- __u32 rs_journal_block;
- __u32 rs_journal_dev;
- __u32 rs_orig_journal_size;
- __u32 rs_dummy2[5];
- __u16 rs_blocksize;
- __u16 rs_dummy3[3];
- unsigned char rs_magic[12];
- __u32 rs_dummy4[5];
- unsigned char rs_uuid[16];
- char rs_label[16];
-};
-
-struct jfs_super_block {
- unsigned char js_magic[4];
- __u32 js_version;
- __u64 js_size;
- __u32 js_bsize;
- __u32 js_dummy1;
- __u32 js_pbsize;
- __u32 js_dummy2[27];
- unsigned char js_uuid[16];
- unsigned char js_label[16];
- unsigned char js_loguuid[16];
-};
-
-struct romfs_super_block {
- unsigned char ros_magic[8];
- __u32 ros_dummy1[2];
- unsigned char ros_volume[16];
-};
-
-struct cramfs_super_block {
- __u8 magic[4];
- __u32 size;
- __u32 flags;
- __u32 future;
- __u8 signature[16];
- struct cramfs_info {
- __u32 crc;
- __u32 edition;
- __u32 blocks;
- __u32 files;
- } info;
- __u8 name[16];
-};
-
-struct swap_id_block {
-/* unsigned char sws_boot[1024]; */
- __u32 sws_version;
- __u32 sws_lastpage;
- __u32 sws_nrbad;
- unsigned char sws_uuid[16];
- char sws_volume[16];
- unsigned char sws_pad[117];
- __u32 sws_badpg;
-};
-
-/* Yucky misaligned values */
-struct vfat_super_block {
-/* 00*/ unsigned char vs_ignored[3];
-/* 03*/ unsigned char vs_sysid[8];
-/* 0b*/ unsigned char vs_sector_size[2];
-/* 0d*/ __u8 vs_cluster_size;
-/* 0e*/ __u16 vs_reserved;
-/* 10*/ __u8 vs_fats;
-/* 11*/ unsigned char vs_dir_entries[2];
-/* 13*/ unsigned char vs_sectors[2];
-/* 15*/ unsigned char vs_media;
-/* 16*/ __u16 vs_fat_length;
-/* 18*/ __u16 vs_secs_track;
-/* 1a*/ __u16 vs_heads;
-/* 1c*/ __u32 vs_hidden;
-/* 20*/ __u32 vs_total_sect;
-/* 24*/ __u32 vs_fat32_length;
-/* 28*/ __u16 vs_flags;
-/* 2a*/ __u8 vs_version[2];
-/* 2c*/ __u32 vs_root_cluster;
-/* 30*/ __u16 vs_insfo_sector;
-/* 32*/ __u16 vs_backup_boot;
-/* 34*/ __u16 vs_reserved2[6];
-/* 40*/ unsigned char vs_unknown[3];
-/* 43*/ unsigned char vs_serno[4];
-/* 47*/ char vs_label[11];
-/* 52*/ unsigned char vs_magic[8];
-/* 5a*/ unsigned char vs_dummy2[164];
-/*1fe*/ unsigned char vs_pmagic[2];
-};
-
-/* Yucky misaligned values */
-struct msdos_super_block {
-/* 00*/ unsigned char ms_ignored[3];
-/* 03*/ unsigned char ms_sysid[8];
-/* 0b*/ unsigned char ms_sector_size[2];
-/* 0d*/ __u8 ms_cluster_size;
-/* 0e*/ __u16 ms_reserved;
-/* 10*/ __u8 ms_fats;
-/* 11*/ unsigned char ms_dir_entries[2];
-/* 13*/ unsigned char ms_sectors[2];
-/* 15*/ unsigned char ms_media;
-/* 16*/ __u16 ms_fat_length;
-/* 18*/ __u16 ms_secs_track;
-/* 1a*/ __u16 ms_heads;
-/* 1c*/ __u32 ms_hidden;
-/* 20*/ __u32 ms_total_sect;
-/* 24*/ unsigned char ms_unknown[3];
-/* 27*/ unsigned char ms_serno[4];
-/* 2b*/ char ms_label[11];
-/* 36*/ unsigned char ms_magic[8];
-/* 3d*/ unsigned char ms_dummy2[192];
-/*1fe*/ unsigned char ms_pmagic[2];
-};
-
-struct minix_super_block {
- __u16 ms_ninodes;
- __u16 ms_nzones;
- __u16 ms_imap_blocks;
- __u16 ms_zmap_blocks;
- __u16 ms_firstdatazone;
- __u16 ms_log_zone_size;
- __u32 ms_max_size;
- unsigned char ms_magic[2];
- __u16 ms_state;
- __u32 ms_zones;
-};
-
-struct mdp_superblock_s {
- __u32 md_magic;
- __u32 major_version;
- __u32 minor_version;
- __u32 patch_version;
- __u32 gvalid_words;
- __u32 set_uuid0;
- __u32 ctime;
- __u32 level;
- __u32 size;
- __u32 nr_disks;
- __u32 raid_disks;
- __u32 md_minor;
- __u32 not_persistent;
- __u32 set_uuid1;
- __u32 set_uuid2;
- __u32 set_uuid3;
-};
-
-struct hfs_super_block {
- char h_magic[2];
- char h_dummy[18];
- __u32 h_blksize;
-};
-
-struct ocfs_volume_header {
- unsigned char minor_version[4];
- unsigned char major_version[4];
- unsigned char signature[128];
- char mount[128];
- unsigned char mount_len[2];
-};
-
-struct ocfs_volume_label {
- unsigned char disk_lock[48];
- char label[64];
- unsigned char label_len[2];
- unsigned char vol_id[16];
- unsigned char vol_id_len[2];
-};
-
-#define ocfsmajor(o) ((__u32)o.major_version[0] \
- + (((__u32) o.major_version[1]) << 8) \
- + (((__u32) o.major_version[2]) << 16) \
- + (((__u32) o.major_version[3]) << 24))
-#define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8))
-#define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8))
-
-#define OCFS_MAGIC "OracleCFS"
-
-struct ocfs2_super_block {
- unsigned char signature[8];
- unsigned char s_dummy1[184];
- unsigned char s_dummy2[80];
- char s_label[64];
- unsigned char s_uuid[16];
-};
-
-#define OCFS2_MIN_BLOCKSIZE 512
-#define OCFS2_MAX_BLOCKSIZE 4096
-
-#define OCFS2_SUPER_BLOCK_BLKNO 2
-
-#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
-
-struct oracle_asm_disk_label {
- char dummy[32];
- char dl_tag[8];
- char dl_id[24];
-};
-
-#define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK"
-#define ORACLE_ASM_DISK_LABEL_OFFSET 32
-
-#define ISODCL(from, to) (to - from + 1)
-struct iso_volume_descriptor {
- char type[ISODCL(1,1)]; /* 711 */
- char id[ISODCL(2,6)];
- char version[ISODCL(7,7)];
- char data[ISODCL(8,2048)];
-};
-
-/*
- * Byte swap functions
- */
-#ifdef __GNUC__
-#define _INLINE_ static __inline__
-#else /* For Watcom C */
-#define _INLINE_ static inline
-#endif
-
-static __u16 blkid_swab16(__u16 val);
-static __u32 blkid_swab32(__u32 val);
-static __u64 blkid_swab64(__u64 val);
-
-#if ((defined __GNUC__) && \
- (defined(__i386__) || defined(__i486__) || defined(__i586__)))
-
-#define _BLKID_HAVE_ASM_BITOPS_
-
-_INLINE_ __u32 blkid_swab32(__u32 val)
-{
-#ifdef EXT2FS_REQUIRE_486
- __asm__("bswap %0" : "=r" (val) : "0" (val));
-#else
- __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
- "rorl $16,%0\n\t" /* swap words */
- "xchgb %b0,%h0" /* swap higher bytes */
- :"=q" (val)
- : "0" (val));
-#endif
- return val;
-}
-
-_INLINE_ __u16 blkid_swab16(__u16 val)
-{
- __asm__("xchgb %b0,%h0" /* swap bytes */ \
- : "=q" (val) \
- : "0" (val)); \
- return val;
-}
-
-_INLINE_ __u64 blkid_swab64(__u64 val)
-{
- return blkid_swab32(val >> 32) |
- ( ((__u64)blkid_swab32((__u32)val)) << 32 );
-}
-#endif
-
-#if !defined(_BLKID_HAVE_ASM_BITOPS_)
-
-_INLINE_ __u16 blkid_swab16(__u16 val)
-{
- return (val >> 8) | (val << 8);
-}
-
-_INLINE_ __u32 blkid_swab32(__u32 val)
-{
- return (val>>24) | ((val>>8) & 0xFF00) |
- ((val<<8) & 0xFF0000) | (val<<24);
-}
-
-_INLINE_ __u64 blkid_swab64(__u64 val)
-{
- return blkid_swab32(val >> 32) |
- ( ((__u64)blkid_swab32((__u32)val)) << 32 );
-}
-#endif
-
-
-
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define blkid_le16(x) blkid_swab16(x)
-#define blkid_le32(x) blkid_swab32(x)
-#define blkid_le64(x) blkid_swab64(x)
-#define blkid_be16(x) (x)
-#define blkid_be32(x) (x)
-#define blkid_be64(x) (x)
-#else
-#define blkid_le16(x) (x)
-#define blkid_le32(x) (x)
-#define blkid_le64(x) (x)
-#define blkid_be16(x) blkid_swab16(x)
-#define blkid_be32(x) blkid_swab32(x)
-#define blkid_be64(x) blkid_swab64(x)
-#endif
-
-#undef _INLINE_
-
-#endif /* _BLKID_PROBE_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * read.c - read the blkid cache from disk, to avoid scanning all devices
- *
- * Copyright (C) 2001, 2003 Theodore Y. Ts'o
- * Copyright (C) 2001 Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include "blkidP.h"
-#include "../uuid/uuid.h"
-
-#ifdef HAVE_STRTOULL
-#define __USE_ISOC9X
-#define STRTOULL strtoull /* defined in stdlib.h if you try hard enough */
-#else
-/* FIXME: need to support real strtoull here */
-#define STRTOULL strtoul
-#endif
-
-#include <stdlib.h>
-
-#ifdef TEST_PROGRAM
-#define blkid_debug_dump_dev(dev) (debug_dump_dev(dev))
-static void debug_dump_dev(blkid_dev dev);
-#endif
-
-/*
- * File format:
- *
- * <device [<NAME="value"> ...]>device_name</device>
- *
- * The following tags are required for each entry:
- * <ID="id"> unique (within this file) ID number of this device
- * <TIME="time"> (ascii time_t) time this entry was last read from disk
- * <TYPE="type"> (detected) type of filesystem/data for this partition
- *
- * The following tags may be present, depending on the device contents
- * <LABEL="label"> (user supplied) label (volume name, etc)
- * <UUID="uuid"> (generated) universally unique identifier (serial no)
- */
-
-static char *skip_over_blank(char *cp)
-{
- while (*cp && isspace(*cp))
- cp++;
- return cp;
-}
-
-static char *skip_over_word(char *cp)
-{
- char ch;
-
- while ((ch = *cp)) {
- /* If we see a backslash, skip the next character */
- if (ch == '\\') {
- cp++;
- if (*cp == '\0')
- break;
- cp++;
- continue;
- }
- if (isspace(ch) || ch == '<' || ch == '>')
- break;
- cp++;
- }
- return cp;
-}
-
-static char *strip_line(char *line)
-{
- char *p;
-
- line = skip_over_blank(line);
-
- p = line + strlen(line) - 1;
-
- while (*line) {
- if (isspace(*p))
- *p-- = '\0';
- else
- break;
- }
-
- return line;
-}
-
-/*
- * Start parsing a new line from the cache.
- *
- * line starts with "<device" return 1 -> continue parsing line
- * line starts with "<foo", empty, or # return 0 -> skip line
- * line starts with other, return -BLKID_ERR_CACHE -> error
- */
-static int parse_start(char **cp)
-{
- char *p;
-
- p = strip_line(*cp);
-
- /* Skip comment or blank lines. We can't just NUL the first '#' char,
- * in case it is inside quotes, or escaped.
- */
- if (*p == '\0' || *p == '#')
- return 0;
-
- if (!strncmp(p, "<device", 7)) {
- DBG(DEBUG_READ, printf("found device header: %8s\n", p));
- p += 7;
-
- *cp = p;
- return 1;
- }
-
- if (*p == '<')
- return 0;
-
- return -BLKID_ERR_CACHE;
-}
-
-/* Consume the remaining XML on the line (cosmetic only) */
-static int parse_end(char **cp)
-{
- *cp = skip_over_blank(*cp);
-
- if (!strncmp(*cp, "</device>", 9)) {
- DBG(DEBUG_READ, printf("found device trailer %9s\n", *cp));
- *cp += 9;
- return 0;
- }
-
- return -BLKID_ERR_CACHE;
-}
-
-/*
- * Allocate a new device struct with device name filled in. Will handle
- * finding the device on lines of the form:
- * <device foo=bar>devname</device>
- * <device>devname<foo>bar</foo></device>
- */
-static int parse_dev(blkid_cache cache, blkid_dev *dev, char **cp)
-{
- char *start, *tmp, *end, *name;
- int ret;
-
- if ((ret = parse_start(cp)) <= 0)
- return ret;
-
- start = tmp = strchr(*cp, '>');
- if (!start) {
- DBG(DEBUG_READ,
- printf("blkid: short line parsing dev: %s\n", *cp));
- return -BLKID_ERR_CACHE;
- }
- start = skip_over_blank(start + 1);
- end = skip_over_word(start);
-
- DBG(DEBUG_READ, printf("device should be %*s\n", end - start, start));
-
- if (**cp == '>')
- *cp = end;
- else
- (*cp)++;
-
- *tmp = '\0';
-
- if (!(tmp = strrchr(end, '<')) || parse_end(&tmp) < 0) {
- DBG(DEBUG_READ,
- printf("blkid: missing </device> ending: %s\n", end));
- } else if (tmp)
- *tmp = '\0';
-
- if (end - start <= 1) {
- DBG(DEBUG_READ, printf("blkid: empty device name: %s\n", *cp));
- return -BLKID_ERR_CACHE;
- }
-
- name = blkid_strndup(start, end-start);
- if (name == NULL)
- return -BLKID_ERR_MEM;
-
- DBG(DEBUG_READ, printf("found dev %s\n", name));
-
- if (!(*dev = blkid_get_dev(cache, name, BLKID_DEV_CREATE)))
- return -BLKID_ERR_MEM;
-
- free(name);
- return 1;
-}
-
-/*
- * Extract a tag of the form NAME="value" from the line.
- */
-static int parse_token(char **name, char **value, char **cp)
-{
- char *end;
-
- if (!name || !value || !cp)
- return -BLKID_ERR_PARAM;
-
- if (!(*value = strchr(*cp, '=')))
- return 0;
-
- **value = '\0';
- *name = strip_line(*cp);
- *value = skip_over_blank(*value + 1);
-
- if (**value == '"') {
- end = strchr(*value + 1, '"');
- if (!end) {
- DBG(DEBUG_READ,
- printf("unbalanced quotes at: %s\n", *value));
- *cp = *value;
- return -BLKID_ERR_CACHE;
- }
- (*value)++;
- *end = '\0';
- end++;
- } else {
- end = skip_over_word(*value);
- if (*end) {
- *end = '\0';
- end++;
- }
- }
- *cp = end;
-
- return 1;
-}
-
-/*
- * Extract a tag of the form <NAME>value</NAME> from the line.
- */
-/*
-static int parse_xml(char **name, char **value, char **cp)
-{
- char *end;
-
- if (!name || !value || !cp)
- return -BLKID_ERR_PARAM;
-
- *name = strip_line(*cp);
-
- if ((*name)[0] != '<' || (*name)[1] == '/')
- return 0;
-
- FIXME: finish this.
-}
-*/
-
-/*
- * Extract a tag from the line.
- *
- * Return 1 if a valid tag was found.
- * Return 0 if no tag found.
- * Return -ve error code.
- */
-static int parse_tag(blkid_cache cache, blkid_dev dev, char **cp)
-{
- char *name;
- char *value;
- int ret;
-
- if (!cache || !dev)
- return -BLKID_ERR_PARAM;
-
- if ((ret = parse_token(&name, &value, cp)) <= 0 /* &&
- (ret = parse_xml(&name, &value, cp)) <= 0 */)
- return ret;
-
- /* Some tags are stored directly in the device struct */
- if (!strcmp(name, "DEVNO"))
- dev->bid_devno = STRTOULL(value, 0, 0);
- else if (!strcmp(name, "PRI"))
- dev->bid_pri = strtol(value, 0, 0);
- else if (!strcmp(name, "TIME"))
- /* FIXME: need to parse a long long eventually */
- dev->bid_time = strtol(value, 0, 0);
- else
- ret = blkid_set_tag(dev, name, value, strlen(value));
-
- DBG(DEBUG_READ, printf(" tag: %s=\"%s\"\n", name, value));
-
- return ret < 0 ? ret : 1;
-}
-
-/*
- * Parse a single line of data, and return a newly allocated dev struct.
- * Add the new device to the cache struct, if one was read.
- *
- * Lines are of the form <device [TAG="value" ...]>/dev/foo</device>
- *
- * Returns -ve value on error.
- * Returns 0 otherwise.
- * If a valid device was read, *dev_p is non-NULL, otherwise it is NULL
- * (e.g. comment lines, unknown XML content, etc).
- */
-static int blkid_parse_line(blkid_cache cache, blkid_dev *dev_p, char *cp)
-{
- blkid_dev dev;
- int ret;
-
- if (!cache || !dev_p)
- return -BLKID_ERR_PARAM;
-
- *dev_p = NULL;
-
- DBG(DEBUG_READ, printf("line: %s\n", cp));
-
- if ((ret = parse_dev(cache, dev_p, &cp)) <= 0)
- return ret;
-
- dev = *dev_p;
-
- while ((ret = parse_tag(cache, dev, &cp)) > 0) {
- ;
- }
-
- if (dev->bid_type == NULL) {
- DBG(DEBUG_READ,
- printf("blkid: device %s has no TYPE\n",dev->bid_name));
- blkid_free_dev(dev);
- }
-
- DBG(DEBUG_READ, blkid_debug_dump_dev(dev));
-
- return ret;
-}
-
-/*
- * Parse the specified filename, and return the data in the supplied or
- * a newly allocated cache struct. If the file doesn't exist, return a
- * new empty cache struct.
- */
-void blkid_read_cache(blkid_cache cache)
-{
- FILE *file;
- char buf[4096];
- int fd, lineno = 0;
- struct stat st;
-
- if (!cache)
- return;
-
- /*
- * If the file doesn't exist, then we just return an empty
- * struct so that the cache can be populated.
- */
- if ((fd = open(cache->bic_filename, O_RDONLY)) < 0)
- return;
- if (fstat(fd, &st) < 0)
- goto errout;
- if ((st.st_mtime == cache->bic_ftime) ||
- (cache->bic_flags & BLKID_BIC_FL_CHANGED)) {
- DBG(DEBUG_CACHE, printf("skipping re-read of %s\n",
- cache->bic_filename));
- goto errout;
- }
-
- DBG(DEBUG_CACHE, printf("reading cache file %s\n",
- cache->bic_filename));
-
- file = fdopen(fd, "r");
- if (!file)
- goto errout;
-
- while (fgets(buf, sizeof(buf), file)) {
- blkid_dev dev;
- unsigned int end;
-
- lineno++;
- if (buf[0] == 0)
- continue;
- end = strlen(buf) - 1;
- /* Continue reading next line if it ends with a backslash */
- while (buf[end] == '\\' && end < sizeof(buf) - 2 &&
- fgets(buf + end, sizeof(buf) - end, file)) {
- end = strlen(buf) - 1;
- lineno++;
- }
-
- if (blkid_parse_line(cache, &dev, buf) < 0) {
- DBG(DEBUG_READ,
- printf("blkid: bad format on line %d\n", lineno));
- continue;
- }
- }
- fclose(file);
-
- /*
- * Initially we do not need to write out the cache file.
- */
- cache->bic_flags &= ~BLKID_BIC_FL_CHANGED;
- cache->bic_ftime = st.st_mtime;
-
- return;
-errout:
- close(fd);
- return;
-}
-
-#ifdef TEST_PROGRAM
-static void debug_dump_dev(blkid_dev dev)
-{
- struct list_head *p;
-
- if (!dev) {
- printf(" dev: NULL\n");
- return;
- }
-
- printf(" dev: name = %s\n", dev->bid_name);
- printf(" dev: DEVNO=\"0x%0llx\"\n", dev->bid_devno);
- printf(" dev: TIME=\"%lu\"\n", dev->bid_time);
- printf(" dev: PRI=\"%d\"\n", dev->bid_pri);
- printf(" dev: flags = 0x%08X\n", dev->bid_flags);
-
- list_for_each(p, &dev->bid_tags) {
- blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
- if (tag)
- printf(" tag: %s=\"%s\"\n", tag->bit_name,
- tag->bit_val);
- else
- printf(" tag: NULL\n");
- }
- puts("");
-}
-
-int main(int argc, char**argv)
-{
- blkid_cache cache = NULL;
- int ret;
-
- blkid_debug_mask = DEBUG_ALL;
- if (argc > 2) {
- fprintf(stderr, "Usage: %s [filename]\n"
- "Test parsing of the cache (filename)\n", argv[0]);
- exit(1);
- }
- if ((ret = blkid_get_cache(&cache, argv[1])) < 0)
- fprintf(stderr, "error %d reading cache file %s\n", ret,
- argv[1] ? argv[1] : BLKID_CACHE_FILE);
-
- blkid_put_cache(cache);
-
- return ret;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * resolve.c - resolve names and tags into specific devices
- *
- * Copyright (C) 2001, 2003 Theodore Ts'o.
- * Copyright (C) 2001 Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include "blkidP.h"
-#include "probe.h"
-
-/*
- * Find a tagname (e.g. LABEL or UUID) on a specific device.
- */
-char *blkid_get_tag_value(blkid_cache cache, const char *tagname,
- const char *devname)
-{
- blkid_tag found;
- blkid_dev dev;
- blkid_cache c = cache;
- char *ret = NULL;
-
- DBG(DEBUG_RESOLVE, printf("looking for %s on %s\n", tagname, devname));
-
- if (!devname)
- return NULL;
-
- if (!cache) {
- if (blkid_get_cache(&c, NULL) < 0)
- return NULL;
- }
-
- if ((dev = blkid_get_dev(c, devname, BLKID_DEV_NORMAL)) &&
- (found = blkid_find_tag_dev(dev, tagname)))
- ret = blkid_strdup(found->bit_val);
-
- if (!cache)
- blkid_put_cache(c);
-
- return ret;
-}
-
-/*
- * Locate a device name from a token (NAME=value string), or (name, value)
- * pair. In the case of a token, value is ignored. If the "token" is not
- * of the form "NAME=value" and there is no value given, then it is assumed
- * to be the actual devname and a copy is returned.
- */
-char *blkid_get_devname(blkid_cache cache, const char *token,
- const char *value)
-{
- blkid_dev dev;
- blkid_cache c = cache;
- char *t = 0, *v = 0;
- char *ret = NULL;
-
- if (!token)
- return NULL;
-
- if (!cache) {
- if (blkid_get_cache(&c, NULL) < 0)
- return NULL;
- }
-
- DBG(DEBUG_RESOLVE,
- printf("looking for %s%s%s %s\n", token, value ? "=" : "",
- value ? value : "", cache ? "in cache" : "from disk"));
-
- if (!value) {
- if (!strchr(token, '='))
- return blkid_strdup(token);
- blkid_parse_tag_string(token, &t, &v);
- if (!t || !v)
- goto errout;
- token = t;
- value = v;
- }
-
- dev = blkid_find_dev_with_tag(c, token, value);
- if (!dev)
- goto errout;
-
- ret = blkid_strdup(blkid_dev_devname(dev));
-
-errout:
- free(t);
- free(v);
- if (!cache) {
- blkid_put_cache(c);
- }
- return ret;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- char *value;
- blkid_cache cache;
-
- blkid_debug_mask = DEBUG_ALL;
- if (argc != 2 && argc != 3) {
- fprintf(stderr, "Usage:\t%s tagname=value\n"
- "\t%s tagname devname\n"
- "Find which device holds a given token or\n"
- "Find what the value of a tag is in a device\n",
- argv[0], argv[0]);
- exit(1);
- }
- if (blkid_get_cache(&cache, bb_dev_null) < 0) {
- fprintf(stderr, "cannot get blkid cache\n");
- exit(1);
- }
-
- if (argv[2]) {
- value = blkid_get_tag_value(cache, argv[1], argv[2]);
- printf("%s has tag %s=%s\n", argv[2], argv[1],
- value ? value : "<missing>");
- } else {
- value = blkid_get_devname(cache, argv[1], NULL);
- printf("%s has tag %s\n", value ? value : "<none>", argv[1]);
- }
- blkid_put_cache(cache);
- return value ? 0 : 1;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * save.c - write the cache struct to disk
- *
- * Copyright (C) 2001 by Andreas Dilger
- * Copyright (C) 2003 Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_MKDEV_H
-#include <sys/mkdev.h>
-#endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include "blkidP.h"
-
-static int save_dev(blkid_dev dev, FILE *file)
-{
- struct list_head *p;
-
- if (!dev || dev->bid_name[0] != '/')
- return 0;
-
- DBG(DEBUG_SAVE,
- printf("device %s, type %s\n", dev->bid_name, dev->bid_type));
-
- fprintf(file,
- "<device DEVNO=\"0x%04lx\" TIME=\"%lu\"",
- (unsigned long) dev->bid_devno, dev->bid_time);
- if (dev->bid_pri)
- fprintf(file, " PRI=\"%d\"", dev->bid_pri);
- list_for_each(p, &dev->bid_tags) {
- blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
- fprintf(file, " %s=\"%s\"", tag->bit_name,tag->bit_val);
- }
- fprintf(file, ">%s</device>\n", dev->bid_name);
-
- return 0;
-}
-
-/*
- * Write out the cache struct to the cache file on disk.
- */
-int blkid_flush_cache(blkid_cache cache)
-{
- struct list_head *p;
- char *tmp = NULL;
- const char *opened = NULL;
- const char *filename;
- FILE *file = NULL;
- int fd, ret = 0;
- struct stat st;
-
- if (!cache)
- return -BLKID_ERR_PARAM;
-
- if (list_empty(&cache->bic_devs) ||
- !(cache->bic_flags & BLKID_BIC_FL_CHANGED)) {
- DBG(DEBUG_SAVE, printf("skipping cache file write\n"));
- return 0;
- }
-
- filename = cache->bic_filename ? cache->bic_filename: BLKID_CACHE_FILE;
-
- /* If we can't write to the cache file, then don't even try */
- if (((ret = stat(filename, &st)) < 0 && errno != ENOENT) ||
- (ret == 0 && access(filename, W_OK) < 0)) {
- DBG(DEBUG_SAVE,
- printf("can't write to cache file %s\n", filename));
- return 0;
- }
-
- /*
- * Try and create a temporary file in the same directory so
- * that in case of error we don't overwrite the cache file.
- * If the cache file doesn't yet exist, it isn't a regular
- * file (e.g. /dev/null or a socket), or we couldn't create
- * a temporary file then we open it directly.
- */
- if (ret == 0 && S_ISREG(st.st_mode)) {
- tmp = xmalloc(strlen(filename) + 8);
- sprintf(tmp, "%s-XXXXXX", filename);
- fd = mkstemp(tmp);
- if (fd >= 0) {
- file = fdopen(fd, "w");
- opened = tmp;
- }
- fchmod(fd, 0644);
- }
-
- if (!file) {
- file = fopen(filename, "w");
- opened = filename;
- }
-
- DBG(DEBUG_SAVE,
- printf("writing cache file %s (really %s)\n",
- filename, opened));
-
- if (!file) {
- ret = errno;
- goto errout;
- }
-
- list_for_each(p, &cache->bic_devs) {
- blkid_dev dev = list_entry(p, struct blkid_struct_dev, bid_devs);
- if (!dev->bid_type)
- continue;
- if ((ret = save_dev(dev, file)) < 0)
- break;
- }
-
- if (ret >= 0) {
- cache->bic_flags &= ~BLKID_BIC_FL_CHANGED;
- ret = 1;
- }
-
- fclose(file);
- if (opened != filename) {
- if (ret < 0) {
- unlink(opened);
- DBG(DEBUG_SAVE,
- printf("unlinked temp cache %s\n", opened));
- } else {
- char *backup;
-
- backup = xmalloc(strlen(filename) + 5);
- sprintf(backup, "%s.old", filename);
- unlink(backup);
- link(filename, backup);
- free(backup);
- rename(opened, filename);
- DBG(DEBUG_SAVE,
- printf("moved temp cache %s\n", opened));
- }
- }
-
-errout:
- free(tmp);
- return ret;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_cache cache = NULL;
- int ret;
-
- blkid_debug_mask = DEBUG_ALL;
- if (argc > 2) {
- fprintf(stderr, "Usage: %s [filename]\n"
- "Test loading/saving a cache (filename)\n", argv[0]);
- exit(1);
- }
-
- if ((ret = blkid_get_cache(&cache, bb_dev_null)) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
- if ((ret = blkid_probe_all(cache)) < 0) {
- fprintf(stderr, "error (%d) probing devices\n", ret);
- exit(1);
- }
- cache->bic_filename = blkid_strdup(argv[1]);
-
- if ((ret = blkid_flush_cache(cache)) < 0) {
- fprintf(stderr, "error (%d) saving cache\n", ret);
- exit(1);
- }
-
- blkid_put_cache(cache);
-
- return ret;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * tag.c - allocation/initialization/free routines for tag structs
- *
- * Copyright (C) 2001 Andreas Dilger
- * Copyright (C) 2003 Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "blkidP.h"
-
-static blkid_tag blkid_new_tag(void)
-{
- blkid_tag tag;
-
- if (!(tag = (blkid_tag) calloc(1, sizeof(struct blkid_struct_tag))))
- return NULL;
-
- INIT_LIST_HEAD(&tag->bit_tags);
- INIT_LIST_HEAD(&tag->bit_names);
-
- return tag;
-}
-
-#ifdef CONFIG_BLKID_DEBUG
-void blkid_debug_dump_tag(blkid_tag tag)
-{
- if (!tag) {
- printf(" tag: NULL\n");
- return;
- }
-
- printf(" tag: %s=\"%s\"\n", tag->bit_name, tag->bit_val);
-}
-#endif
-
-void blkid_free_tag(blkid_tag tag)
-{
- if (!tag)
- return;
-
- DBG(DEBUG_TAG, printf(" freeing tag %s=%s\n", tag->bit_name,
- tag->bit_val ? tag->bit_val : "(NULL)"));
- DBG(DEBUG_TAG, blkid_debug_dump_tag(tag));
-
- list_del(&tag->bit_tags); /* list of tags for this device */
- list_del(&tag->bit_names); /* list of tags with this type */
-
- free(tag->bit_name);
- free(tag->bit_val);
- free(tag);
-}
-
-/*
- * Find the desired tag on a device. If value is NULL, then the
- * first such tag is returned, otherwise return only exact tag if found.
- */
-blkid_tag blkid_find_tag_dev(blkid_dev dev, const char *type)
-{
- struct list_head *p;
-
- if (!dev || !type)
- return NULL;
-
- list_for_each(p, &dev->bid_tags) {
- blkid_tag tmp = list_entry(p, struct blkid_struct_tag,
- bit_tags);
-
- if (!strcmp(tmp->bit_name, type))
- return tmp;
- }
- return NULL;
-}
-
-/*
- * Find the desired tag type in the cache.
- * We return the head tag for this tag type.
- */
-static blkid_tag blkid_find_head_cache(blkid_cache cache, const char *type)
-{
- blkid_tag head = NULL, tmp;
- struct list_head *p;
-
- if (!cache || !type)
- return NULL;
-
- list_for_each(p, &cache->bic_tags) {
- tmp = list_entry(p, struct blkid_struct_tag, bit_tags);
- if (!strcmp(tmp->bit_name, type)) {
- DBG(DEBUG_TAG,
- printf(" found cache tag head %s\n", type));
- head = tmp;
- break;
- }
- }
- return head;
-}
-
-/*
- * Set a tag on an existing device.
- *
- * If value is NULL, then delete the tagsfrom the device.
- */
-int blkid_set_tag(blkid_dev dev, const char *name,
- const char *value, const int vlength)
-{
- blkid_tag t = 0, head = 0;
- char *val = 0;
-
- if (!dev || !name)
- return -BLKID_ERR_PARAM;
-
- if (!(val = blkid_strndup(value, vlength)) && value)
- return -BLKID_ERR_MEM;
- t = blkid_find_tag_dev(dev, name);
- if (!value) {
- blkid_free_tag(t);
- } else if (t) {
- if (!strcmp(t->bit_val, val)) {
- /* Same thing, exit */
- free(val);
- return 0;
- }
- free(t->bit_val);
- t->bit_val = val;
- } else {
- /* Existing tag not present, add to device */
- if (!(t = blkid_new_tag()))
- goto errout;
- t->bit_name = blkid_strdup(name);
- t->bit_val = val;
- t->bit_dev = dev;
-
- list_add_tail(&t->bit_tags, &dev->bid_tags);
-
- if (dev->bid_cache) {
- head = blkid_find_head_cache(dev->bid_cache,
- t->bit_name);
- if (!head) {
- head = blkid_new_tag();
- if (!head)
- goto errout;
-
- DBG(DEBUG_TAG,
- printf(" creating new cache tag head %s\n", name));
- head->bit_name = blkid_strdup(name);
- if (!head->bit_name)
- goto errout;
- list_add_tail(&head->bit_tags,
- &dev->bid_cache->bic_tags);
- }
- list_add_tail(&t->bit_names, &head->bit_names);
- }
- }
-
- /* Link common tags directly to the device struct */
- if (!strcmp(name, "TYPE"))
- dev->bid_type = val;
- else if (!strcmp(name, "LABEL"))
- dev->bid_label = val;
- else if (!strcmp(name, "UUID"))
- dev->bid_uuid = val;
-
- if (dev->bid_cache)
- dev->bid_cache->bic_flags |= BLKID_BIC_FL_CHANGED;
- return 0;
-
-errout:
- blkid_free_tag(t);
- if (!t)
- free(val);
- blkid_free_tag(head);
- return -BLKID_ERR_MEM;
-}
-
-
-/*
- * Parse a "NAME=value" string. This is slightly different than
- * parse_token, because that will end an unquoted value at a space, while
- * this will assume that an unquoted value is the rest of the token (e.g.
- * if we are passed an already quoted string from the command-line we don't
- * have to both quote and escape quote so that the quotes make it to
- * us).
- *
- * Returns 0 on success, and -1 on failure.
- */
-int blkid_parse_tag_string(const char *token, char **ret_type, char **ret_val)
-{
- char *name, *value, *cp;
-
- DBG(DEBUG_TAG, printf("trying to parse '%s' as a tag\n", token));
-
- if (!token || !(cp = strchr(token, '=')))
- return -1;
-
- name = blkid_strdup(token);
- if (!name)
- return -1;
- value = name + (cp - token);
- *value++ = '\0';
- if (*value == '"' || *value == '\'') {
- char c = *value++;
- if (!(cp = strrchr(value, c)))
- goto errout; /* missing closing quote */
- *cp = '\0';
- }
- value = blkid_strdup(value);
- if (!value)
- goto errout;
-
- *ret_type = name;
- *ret_val = value;
-
- return 0;
-
-errout:
- free(name);
- return -1;
-}
-
-/*
- * Tag iteration routines for the public libblkid interface.
- *
- * These routines do not expose the list.h implementation, which are a
- * contamination of the namespace, and which force us to reveal far, far
- * too much of our internal implemenation. I'm not convinced I want
- * to keep list.h in the long term, anyway. It's fine for kernel
- * programming, but performance is not the #1 priority for this
- * library, and I really don't like the tradeoff of type-safety for
- * performance for this application. [tytso:20030125.2007EST]
- */
-
-/*
- * This series of functions iterate over all tags in a device
- */
-#define TAG_ITERATE_MAGIC 0x01a5284c
-
-struct blkid_struct_tag_iterate {
- int magic;
- blkid_dev dev;
- struct list_head *p;
-};
-
-blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev)
-{
- blkid_tag_iterate iter;
-
- iter = xmalloc(sizeof(struct blkid_struct_tag_iterate));
- iter->magic = TAG_ITERATE_MAGIC;
- iter->dev = dev;
- iter->p = dev->bid_tags.next;
- return iter;
-}
-
-/*
- * Return 0 on success, -1 on error
- */
-extern int blkid_tag_next(blkid_tag_iterate iter,
- const char **type, const char **value)
-{
- blkid_tag tag;
-
- *type = 0;
- *value = 0;
- if (!iter || iter->magic != TAG_ITERATE_MAGIC ||
- iter->p == &iter->dev->bid_tags)
- return -1;
- tag = list_entry(iter->p, struct blkid_struct_tag, bit_tags);
- *type = tag->bit_name;
- *value = tag->bit_val;
- iter->p = iter->p->next;
- return 0;
-}
-
-void blkid_tag_iterate_end(blkid_tag_iterate iter)
-{
- if (!iter || iter->magic != TAG_ITERATE_MAGIC)
- return;
- iter->magic = 0;
- free(iter);
-}
-
-/*
- * This function returns a device which matches a particular
- * type/value pair. If there is more than one device that matches the
- * search specification, it returns the one with the highest priority
- * value. This allows us to give preference to EVMS or LVM devices.
- *
- * XXX there should also be an interface which uses an iterator so we
- * can get all of the devices which match a type/value search parameter.
- */
-extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache,
- const char *type,
- const char *value)
-{
- blkid_tag head;
- blkid_dev dev;
- int pri;
- struct list_head *p;
-
- if (!cache || !type || !value)
- return NULL;
-
- blkid_read_cache(cache);
-
- DBG(DEBUG_TAG, printf("looking for %s=%s in cache\n", type, value));
-
-try_again:
- pri = -1;
- dev = 0;
- head = blkid_find_head_cache(cache, type);
-
- if (head) {
- list_for_each(p, &head->bit_names) {
- blkid_tag tmp = list_entry(p, struct blkid_struct_tag,
- bit_names);
-
- if (!strcmp(tmp->bit_val, value) &&
- tmp->bit_dev->bid_pri > pri) {
- dev = tmp->bit_dev;
- pri = dev->bid_pri;
- }
- }
- }
- if (dev && !(dev->bid_flags & BLKID_BID_FL_VERIFIED)) {
- dev = blkid_verify(cache, dev);
- if (dev && (dev->bid_flags & BLKID_BID_FL_VERIFIED))
- goto try_again;
- }
-
- if (!dev && !(cache->bic_flags & BLKID_BIC_FL_PROBED)) {
- if (blkid_probe_all(cache) < 0)
- return NULL;
- goto try_again;
- }
- return dev;
-}
-
-#ifdef TEST_PROGRAM
-#ifdef HAVE_GETOPT_H
-#include <getopt.h>
-#else
-extern char *optarg;
-extern int optind;
-#endif
-
-void usage(char *prog)
-{
- fprintf(stderr, "Usage: %s [-f blkid_file] [-m debug_mask] device "
- "[type value]\n",
- prog);
- fprintf(stderr, "\tList all tags for a device and exit\n", prog);
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- blkid_tag_iterate iter;
- blkid_cache cache = NULL;
- blkid_dev dev;
- int c, ret, found;
- int flags = BLKID_DEV_FIND;
- char *tmp;
- char *file = NULL;
- char *devname = NULL;
- char *search_type = NULL;
- char *search_value = NULL;
- const char *type, *value;
-
- while ((c = getopt (argc, argv, "m:f:")) != EOF)
- switch (c) {
- case 'f':
- file = optarg;
- break;
- case 'm':
- blkid_debug_mask = strtoul (optarg, &tmp, 0);
- if (*tmp) {
- fprintf(stderr, "Invalid debug mask: %d\n",
- optarg);
- exit(1);
- }
- break;
- case '?':
- usage(argv[0]);
- }
- if (argc > optind)
- devname = argv[optind++];
- if (argc > optind)
- search_type = argv[optind++];
- if (argc > optind)
- search_value = argv[optind++];
- if (!devname || (argc != optind))
- usage(argv[0]);
-
- if ((ret = blkid_get_cache(&cache, file)) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
-
- dev = blkid_get_dev(cache, devname, flags);
- if (!dev) {
- fprintf(stderr, "%s: cannot find device in blkid cache\n");
- exit(1);
- }
- if (search_type) {
- found = blkid_dev_has_tag(dev, search_type, search_value);
- printf("Device %s: (%s, %s) %s\n", blkid_dev_devname(dev),
- search_type, search_value ? search_value : "NULL",
- found ? "FOUND" : "NOT FOUND");
- return !found;
- }
- printf("Device %s...\n", blkid_dev_devname(dev));
-
- iter = blkid_tag_iterate_begin(dev);
- while (blkid_tag_next(iter, &type, &value) == 0) {
- printf("\tTag %s has value %s\n", type, value);
- }
- blkid_tag_iterate_end(iter);
-
- blkid_put_cache(cache);
- return 0;
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * chattr.c - Change file attributes on an ext2 file system
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU General
- * Public License
- */
-
-/*
- * History:
- * 93/10/30 - Creation
- * 93/11/13 - Replace stat() calls by lstat() to avoid loops
- * 94/02/27 - Integrated in Ted's distribution
- * 98/12/29 - Ignore symlinks when working recursively (G M Sipe)
- * 98/12/29 - Display version info only when -V specified (G M Sipe)
- */
-
-#include <sys/types.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include "ext2fs/ext2_fs.h"
-
-#ifdef __GNUC__
-# define EXT2FS_ATTR(x) __attribute__(x)
-#else
-# define EXT2FS_ATTR(x)
-#endif
-
-#include "e2fsbb.h"
-#include "e2p/e2p.h"
-
-#define OPT_ADD 1
-#define OPT_REM 2
-#define OPT_SET 4
-#define OPT_SET_VER 8
-static int flags;
-static int recursive;
-
-static unsigned long version;
-
-static unsigned long af;
-static unsigned long rf;
-static unsigned long sf;
-
-struct flags_char {
- unsigned long flag;
- char optchar;
-};
-
-static const struct flags_char flags_array[] = {
- { EXT2_NOATIME_FL, 'A' },
- { EXT2_SYNC_FL, 'S' },
- { EXT2_DIRSYNC_FL, 'D' },
- { EXT2_APPEND_FL, 'a' },
- { EXT2_COMPR_FL, 'c' },
- { EXT2_NODUMP_FL, 'd' },
- { EXT2_IMMUTABLE_FL, 'i' },
- { EXT3_JOURNAL_DATA_FL, 'j' },
- { EXT2_SECRM_FL, 's' },
- { EXT2_UNRM_FL, 'u' },
- { EXT2_NOTAIL_FL, 't' },
- { EXT2_TOPDIR_FL, 'T' },
- { 0, 0 }
-};
-
-static unsigned long get_flag(char c)
-{
- const struct flags_char *fp;
- for (fp = flags_array; fp->flag; fp++)
- if (fp->optchar == c)
- return fp->flag;
- bb_show_usage();
- return 0;
-}
-
-static int decode_arg(char *arg)
-{
- unsigned long *fl;
- char opt = *arg++;
-
- if (opt == '-') {
- flags |= OPT_REM;
- fl = &rf;
- } else if (opt == '+') {
- flags |= OPT_ADD;
- fl = ⁡
- } else if (opt == '=') {
- flags |= OPT_SET;
- fl = &sf;
- } else
- return EOF;
-
- for (; *arg ; ++arg)
- (*fl) |= get_flag(*arg);
-
- return 1;
-}
-
-static int chattr_dir_proc(const char *, struct dirent *, void *);
-
-static void change_attributes(const char * name)
-{
- unsigned long fsflags;
- struct stat st;
-
- if (lstat(name, &st) == -1) {
- bb_error_msg("stat %s failed", name);
- return;
- }
- if (S_ISLNK(st.st_mode) && recursive)
- return;
-
- /* Don't try to open device files, fifos etc. We probably
- * ought to display an error if the file was explicitly given
- * on the command line (whether or not recursive was
- * requested). */
- if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode))
- return;
-
- if (flags & OPT_SET_VER)
- if (fsetversion(name, version) == -1)
- bb_error_msg("setting version on %s", name);
-
- if (flags & OPT_SET) {
- fsflags = sf;
- } else {
- if (fgetflags(name, &fsflags) == -1) {
- bb_error_msg("reading flags on %s", name);
- goto skip_setflags;
- }
- if (flags & OPT_REM)
- fsflags &= ~rf;
- if (flags & OPT_ADD)
- fsflags |= af;
- if (!S_ISDIR(st.st_mode))
- fsflags &= ~EXT2_DIRSYNC_FL;
- }
- if (fsetflags(name, fsflags) == -1)
- bb_error_msg("setting flags on %s", name);
-
-skip_setflags:
- if (S_ISDIR(st.st_mode) && recursive)
- iterate_on_dir(name, chattr_dir_proc, NULL);
-}
-
-static int chattr_dir_proc(const char *dir_name, struct dirent *de,
- void *private EXT2FS_ATTR((unused)))
-{
- /*if (strcmp(de->d_name, ".") || strcmp(de->d_name, "..")) {*/
- if (de->d_name[0] == '.'
- && (!de->d_name[1] || (de->d_name[1] == '.' && !de->d_name[2]))
- ) {
- char *path = concat_subpath_file(dir_name, de->d_name);
- if (path) {
- change_attributes(path);
- free(path);
- }
- }
- return 0;
-}
-
-int chattr_main(int argc, char **argv)
-{
- int i;
- char *arg;
-
- /* parse the args */
- for (i = 1; i < argc; ++i) {
- arg = argv[i];
-
- /* take care of -R and -v <version> */
- if (arg[0] == '-') {
- if (arg[1] == 'R' && arg[2] == '\0') {
- recursive = 1;
- continue;
- } else if (arg[1] == 'v' && arg[2] == '\0') {
- char *tmp;
- ++i;
- if (i >= argc)
- bb_show_usage();
- version = strtol(argv[i], &tmp, 0);
- if (*tmp)
- bb_error_msg_and_die("bad version '%s'", arg);
- flags |= OPT_SET_VER;
- continue;
- }
- }
-
- if (decode_arg(arg) == EOF)
- break;
- }
-
- /* run sanity checks on all the arguments given us */
- if (i >= argc)
- bb_show_usage();
- if ((flags & OPT_SET) && ((flags & OPT_ADD) || (flags & OPT_REM)))
- bb_error_msg_and_die("= is incompatible with - and +");
- if ((rf & af) != 0)
- bb_error_msg_and_die("Can't set and unset a flag");
- if (!flags)
- bb_error_msg_and_die("Must use '-v', =, - or +");
-
- /* now run chattr on all the files passed to us */
- while (i < argc)
- change_attributes(argv[i++]);
-
- return EXIT_SUCCESS;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * File: e2fsbb.h
- *
- * Redefine a bunch of e2fsprogs stuff to use busybox routines
- * instead. This makes upgrade between e2fsprogs versions easy.
- */
-
-#ifndef __E2FSBB_H__
-#define __E2FSBB_H__ 1
-
-#include "libbb.h"
-
-/* version we've last synced against */
-#define E2FSPROGS_VERSION "1.38"
-#define E2FSPROGS_DATE "30-Jun-2005"
-
-typedef long errcode_t;
-#define ERRCODE_RANGE 8
-#define error_message(code) strerror((int) (code & ((1<<ERRCODE_RANGE)-1)))
-
-/* header defines */
-#define ENABLE_HTREE 1
-#define HAVE_ERRNO_H 1
-#define HAVE_EXT2_IOCTLS 1
-#define HAVE_LINUX_FD_H 1
-#define HAVE_MNTENT_H 1
-#define HAVE_NETINET_IN_H 1
-#define HAVE_NET_IF_H 1
-#define HAVE_SYS_IOCTL_H 1
-#define HAVE_SYS_MOUNT_H 1
-#define HAVE_SYS_QUEUE_H 1
-#define HAVE_SYS_STAT_H 1
-#define HAVE_SYS_TYPES_H 1
-#define HAVE_UNISTD_H 1
-
-/* Endianness */
-#if BB_BIG_ENDIAN
-#define ENABLE_SWAPFS 1
-#define WORDS_BIGENDIAN 1
-#endif
-
-#endif /* __E2FSBB_H__ */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * e2fsck
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
- * Copyright (C) 2006 Garrett Kajmowicz
- *
- * Dictionary Abstract Data Type
- * Copyright (C) 1997 Kaz Kylheku <kaz@ashi.footprints.net>
- * Free Software License:
- * All rights are reserved by the author, with the following exceptions:
- * Permission is granted to freely reproduce and distribute this software,
- * possibly in exchange for a fee, provided that this copyright notice appears
- * intact. Permission is also granted to adapt this software to produce
- * derivative works, as long as the modified versions carry this copyright
- * notice and additional notices stating that the work has been modified.
- * This source code may be translated into executable form and incorporated
- * into proprietary software; there is no requirement for such software to
- * contain a copyright notice related to this source.
- *
- * linux/fs/recovery and linux/fs/revoke
- * Written by Stephen C. Tweedie <sct@redhat.com>, 1999
- *
- * Copyright 1999-2000 Red Hat Software --- All Rights Reserved
- *
- * Journal recovery routines for the generic filesystem journaling code;
- * part of the ext2fs journaling system.
- *
- * Licensed under GPLv2 or later, see file License in this tarball for details.
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1 /* get strnlen() */
-#endif
-
-#include "e2fsck.h" /*Put all of our defines here to clean things up*/
-
-#define _(x) x
-#define N_(x) x
-
-/*
- * Procedure declarations
- */
-
-static void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
-
-/* pass1.c */
-static void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool);
-
-/* pass2.c */
-static int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir,
- ext2_ino_t ino, char *buf);
-
-/* pass3.c */
-static int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t inode);
-static errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
- int num, int gauranteed_size);
-static ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix);
-static errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino,
- int adj);
-
-/* rehash.c */
-static void e2fsck_rehash_directories(e2fsck_t ctx);
-
-/* util.c */
-static void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
- const char *description);
-static int ask(e2fsck_t ctx, const char * string, int def);
-static void e2fsck_read_bitmaps(e2fsck_t ctx);
-static void preenhalt(e2fsck_t ctx);
-static void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
- struct ext2_inode * inode, const char * proc);
-static void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
- struct ext2_inode * inode, const char * proc);
-static blk_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs,
- const char *name, io_manager manager);
-
-/* unix.c */
-static void e2fsck_clear_progbar(e2fsck_t ctx);
-static int e2fsck_simple_progress(e2fsck_t ctx, const char *label,
- float percent, unsigned int dpynum);
-
-
-/*
- * problem.h --- e2fsck problem error codes
- */
-
-typedef __u32 problem_t;
-
-struct problem_context {
- errcode_t errcode;
- ext2_ino_t ino, ino2, dir;
- struct ext2_inode *inode;
- struct ext2_dir_entry *dirent;
- blk_t blk, blk2;
- e2_blkcnt_t blkcount;
- int group;
- __u64 num;
- const char *str;
-};
-
-
-/*
- * Function declarations
- */
-static int fix_problem(e2fsck_t ctx, problem_t code, struct problem_context *pctx);
-static int end_problem_latch(e2fsck_t ctx, int mask);
-static int set_latch_flags(int mask, int setflags, int clearflags);
-static void clear_problem_context(struct problem_context *ctx);
-
-/*
- * Dictionary Abstract Data Type
- * Copyright (C) 1997 Kaz Kylheku <kaz@ashi.footprints.net>
- *
- * dict.h v 1.22.2.6 2000/11/13 01:36:44 kaz
- * kazlib_1_20
- */
-
-#ifndef DICT_H
-#define DICT_H
-
-/*
- * Blurb for inclusion into C++ translation units
- */
-
-typedef unsigned long dictcount_t;
-#define DICTCOUNT_T_MAX ULONG_MAX
-
-/*
- * The dictionary is implemented as a red-black tree
- */
-
-typedef enum { dnode_red, dnode_black } dnode_color_t;
-
-typedef struct dnode_t {
- struct dnode_t *dict_left;
- struct dnode_t *dict_right;
- struct dnode_t *dict_parent;
- dnode_color_t dict_color;
- const void *dict_key;
- void *dict_data;
-} dnode_t;
-
-typedef int (*dict_comp_t)(const void *, const void *);
-typedef void (*dnode_free_t)(dnode_t *);
-
-typedef struct dict_t {
- dnode_t dict_nilnode;
- dictcount_t dict_nodecount;
- dictcount_t dict_maxcount;
- dict_comp_t dict_compare;
- dnode_free_t dict_freenode;
- int dict_dupes;
-} dict_t;
-
-typedef void (*dnode_process_t)(dict_t *, dnode_t *, void *);
-
-typedef struct dict_load_t {
- dict_t *dict_dictptr;
- dnode_t dict_nilnode;
-} dict_load_t;
-
-#define dict_count(D) ((D)->dict_nodecount)
-#define dnode_get(N) ((N)->dict_data)
-#define dnode_getkey(N) ((N)->dict_key)
-
-#endif
-
-/*
- * Compatibility header file for e2fsck which should be included
- * instead of linux/jfs.h
- *
- * Copyright (C) 2000 Stephen C. Tweedie
- */
-
-/*
- * Pull in the definition of the e2fsck context structure
- */
-
-struct buffer_head {
- char b_data[8192];
- e2fsck_t b_ctx;
- io_channel b_io;
- int b_size;
- blk_t b_blocknr;
- int b_dirty;
- int b_uptodate;
- int b_err;
-};
-
-
-#define K_DEV_FS 1
-#define K_DEV_JOURNAL 2
-
-#define lock_buffer(bh) do {} while(0)
-#define unlock_buffer(bh) do {} while(0)
-#define buffer_req(bh) 1
-#define do_readahead(journal, start) do {} while(0)
-
-static e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
-
-typedef struct {
- int object_length;
-} kmem_cache_t;
-
-#define kmem_cache_alloc(cache,flags) malloc((cache)->object_length)
-
-/*
- * We use the standard libext2fs portability tricks for inline
- * functions.
- */
-
-static kmem_cache_t * do_cache_create(int len)
-{
- kmem_cache_t *new_cache;
-
- new_cache = malloc(sizeof(*new_cache));
- if (new_cache)
- new_cache->object_length = len;
- return new_cache;
-}
-
-static void do_cache_destroy(kmem_cache_t *cache)
-{
- free(cache);
-}
-
-
-/*
- * Dictionary Abstract Data Type
- */
-
-
-/*
- * These macros provide short convenient names for structure members,
- * which are embellished with dict_ prefixes so that they are
- * properly confined to the documented namespace. It's legal for a
- * program which uses dict to define, for instance, a macro called ``parent''.
- * Such a macro would interfere with the dnode_t struct definition.
- * In general, highly portable and reusable C modules which expose their
- * structures need to confine structure member names to well-defined spaces.
- * The resulting identifiers aren't necessarily convenient to use, nor
- * readable, in the implementation, however!
- */
-
-#define left dict_left
-#define right dict_right
-#define parent dict_parent
-#define color dict_color
-#define key dict_key
-#define data dict_data
-
-#define nilnode dict_nilnode
-#define maxcount dict_maxcount
-#define compare dict_compare
-#define dupes dict_dupes
-
-#define dict_root(D) ((D)->nilnode.left)
-#define dict_nil(D) (&(D)->nilnode)
-
-static void dnode_free(dnode_t *node);
-
-/*
- * Perform a ``left rotation'' adjustment on the tree. The given node P and
- * its right child C are rearranged so that the P instead becomes the left
- * child of C. The left subtree of C is inherited as the new right subtree
- * for P. The ordering of the keys within the tree is thus preserved.
- */
-
-static void rotate_left(dnode_t *upper)
-{
- dnode_t *lower, *lowleft, *upparent;
-
- lower = upper->right;
- upper->right = lowleft = lower->left;
- lowleft->parent = upper;
-
- lower->parent = upparent = upper->parent;
-
- /* don't need to check for root node here because root->parent is
- the sentinel nil node, and root->parent->left points back to root */
-
- if (upper == upparent->left) {
- upparent->left = lower;
- } else {
- assert (upper == upparent->right);
- upparent->right = lower;
- }
-
- lower->left = upper;
- upper->parent = lower;
-}
-
-/*
- * This operation is the ``mirror'' image of rotate_left. It is
- * the same procedure, but with left and right interchanged.
- */
-
-static void rotate_right(dnode_t *upper)
-{
- dnode_t *lower, *lowright, *upparent;
-
- lower = upper->left;
- upper->left = lowright = lower->right;
- lowright->parent = upper;
-
- lower->parent = upparent = upper->parent;
-
- if (upper == upparent->right) {
- upparent->right = lower;
- } else {
- assert (upper == upparent->left);
- upparent->left = lower;
- }
-
- lower->right = upper;
- upper->parent = lower;
-}
-
-/*
- * Do a postorder traversal of the tree rooted at the specified
- * node and free everything under it. Used by dict_free().
- */
-
-static void free_nodes(dict_t *dict, dnode_t *node, dnode_t *nil)
-{
- if (node == nil)
- return;
- free_nodes(dict, node->left, nil);
- free_nodes(dict, node->right, nil);
- dict->dict_freenode(node);
-}
-
-/*
- * Verify that the tree contains the given node. This is done by
- * traversing all of the nodes and comparing their pointers to the
- * given pointer. Returns 1 if the node is found, otherwise
- * returns zero. It is intended for debugging purposes.
- */
-
-static int verify_dict_has_node(dnode_t *nil, dnode_t *root, dnode_t *node)
-{
- if (root != nil) {
- return root == node
- || verify_dict_has_node(nil, root->left, node)
- || verify_dict_has_node(nil, root->right, node);
- }
- return 0;
-}
-
-
-/*
- * Select a different set of node allocator routines.
- */
-
-static void dict_set_allocator(dict_t *dict, dnode_free_t fr)
-{
- assert (dict_count(dict) == 0);
- dict->dict_freenode = fr;
-}
-
-/*
- * Free all the nodes in the dictionary by using the dictionary's
- * installed free routine. The dictionary is emptied.
- */
-
-static void dict_free_nodes(dict_t *dict)
-{
- dnode_t *nil = dict_nil(dict), *root = dict_root(dict);
- free_nodes(dict, root, nil);
- dict->dict_nodecount = 0;
- dict->nilnode.left = &dict->nilnode;
- dict->nilnode.right = &dict->nilnode;
-}
-
-/*
- * Initialize a user-supplied dictionary object.
- */
-
-static dict_t *dict_init(dict_t *dict, dictcount_t maxcount, dict_comp_t comp)
-{
- dict->compare = comp;
- dict->dict_freenode = dnode_free;
- dict->dict_nodecount = 0;
- dict->maxcount = maxcount;
- dict->nilnode.left = &dict->nilnode;
- dict->nilnode.right = &dict->nilnode;
- dict->nilnode.parent = &dict->nilnode;
- dict->nilnode.color = dnode_black;
- dict->dupes = 0;
- return dict;
-}
-
-/*
- * Locate a node in the dictionary having the given key.
- * If the node is not found, a null a pointer is returned (rather than
- * a pointer that dictionary's nil sentinel node), otherwise a pointer to the
- * located node is returned.
- */
-
-static dnode_t *dict_lookup(dict_t *dict, const void *key)
-{
- dnode_t *root = dict_root(dict);
- dnode_t *nil = dict_nil(dict);
- dnode_t *saved;
- int result;
-
- /* simple binary search adapted for trees that contain duplicate keys */
-
- while (root != nil) {
- result = dict->compare(key, root->key);
- if (result < 0)
- root = root->left;
- else if (result > 0)
- root = root->right;
- else {
- if (!dict->dupes) { /* no duplicates, return match */
- return root;
- } else { /* could be dupes, find leftmost one */
- do {
- saved = root;
- root = root->left;
- while (root != nil && dict->compare(key, root->key))
- root = root->right;
- } while (root != nil);
- return saved;
- }
- }
- }
-
- return NULL;
-}
-
-/*
- * Insert a node into the dictionary. The node should have been
- * initialized with a data field. All other fields are ignored.
- * The behavior is undefined if the user attempts to insert into
- * a dictionary that is already full (for which the dict_isfull()
- * function returns true).
- */
-
-static void dict_insert(dict_t *dict, dnode_t *node, const void *key)
-{
- dnode_t *where = dict_root(dict), *nil = dict_nil(dict);
- dnode_t *parent = nil, *uncle, *grandpa;
- int result = -1;
-
- node->key = key;
-
- /* basic binary tree insert */
-
- while (where != nil) {
- parent = where;
- result = dict->compare(key, where->key);
- /* trap attempts at duplicate key insertion unless it's explicitly allowed */
- assert (dict->dupes || result != 0);
- if (result < 0)
- where = where->left;
- else
- where = where->right;
- }
-
- assert (where == nil);
-
- if (result < 0)
- parent->left = node;
- else
- parent->right = node;
-
- node->parent = parent;
- node->left = nil;
- node->right = nil;
-
- dict->dict_nodecount++;
-
- /* red black adjustments */
-
- node->color = dnode_red;
-
- while (parent->color == dnode_red) {
- grandpa = parent->parent;
- if (parent == grandpa->left) {
- uncle = grandpa->right;
- if (uncle->color == dnode_red) { /* red parent, red uncle */
- parent->color = dnode_black;
- uncle->color = dnode_black;
- grandpa->color = dnode_red;
- node = grandpa;
- parent = grandpa->parent;
- } else { /* red parent, black uncle */
- if (node == parent->right) {
- rotate_left(parent);
- parent = node;
- assert (grandpa == parent->parent);
- /* rotation between parent and child preserves grandpa */
- }
- parent->color = dnode_black;
- grandpa->color = dnode_red;
- rotate_right(grandpa);
- break;
- }
- } else { /* symmetric cases: parent == parent->parent->right */
- uncle = grandpa->left;
- if (uncle->color == dnode_red) {
- parent->color = dnode_black;
- uncle->color = dnode_black;
- grandpa->color = dnode_red;
- node = grandpa;
- parent = grandpa->parent;
- } else {
- if (node == parent->left) {
- rotate_right(parent);
- parent = node;
- assert (grandpa == parent->parent);
- }
- parent->color = dnode_black;
- grandpa->color = dnode_red;
- rotate_left(grandpa);
- break;
- }
- }
- }
-
- dict_root(dict)->color = dnode_black;
-
-}
-
-/*
- * Allocate a node using the dictionary's allocator routine, give it
- * the data item.
- */
-
-static dnode_t *dnode_init(dnode_t *dnode, void *data)
-{
- dnode->data = data;
- dnode->parent = NULL;
- dnode->left = NULL;
- dnode->right = NULL;
- return dnode;
-}
-
-static int dict_alloc_insert(dict_t *dict, const void *key, void *data)
-{
- dnode_t *node = malloc(sizeof(dnode_t));
-
- if (node) {
- dnode_init(node, data);
- dict_insert(dict, node, key);
- return 1;
- }
- return 0;
-}
-
-/*
- * Return the node with the lowest (leftmost) key. If the dictionary is empty
- * (that is, dict_isempty(dict) returns 1) a null pointer is returned.
- */
-
-static dnode_t *dict_first(dict_t *dict)
-{
- dnode_t *nil = dict_nil(dict), *root = dict_root(dict), *left;
-
- if (root != nil)
- while ((left = root->left) != nil)
- root = left;
-
- return (root == nil) ? NULL : root;
-}
-
-/*
- * Return the given node's successor node---the node which has the
- * next key in the the left to right ordering. If the node has
- * no successor, a null pointer is returned rather than a pointer to
- * the nil node.
- */
-
-static dnode_t *dict_next(dict_t *dict, dnode_t *curr)
-{
- dnode_t *nil = dict_nil(dict), *parent, *left;
-
- if (curr->right != nil) {
- curr = curr->right;
- while ((left = curr->left) != nil)
- curr = left;
- return curr;
- }
-
- parent = curr->parent;
-
- while (parent != nil && curr == parent->right) {
- curr = parent;
- parent = curr->parent;
- }
-
- return (parent == nil) ? NULL : parent;
-}
-
-
-static void dnode_free(dnode_t *node)
-{
- free(node);
-}
-
-
-#undef left
-#undef right
-#undef parent
-#undef color
-#undef key
-#undef data
-
-#undef nilnode
-#undef maxcount
-#undef compare
-#undef dupes
-
-
-/*
- * dirinfo.c --- maintains the directory information table for e2fsck.
- */
-
-/*
- * This subroutine is called during pass1 to create a directory info
- * entry. During pass1, the passed-in parent is 0; it will get filled
- * in during pass2.
- */
-static void e2fsck_add_dir_info(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent)
-{
- struct dir_info *dir;
- int i, j;
- ext2_ino_t num_dirs;
- errcode_t retval;
- unsigned long old_size;
-
- if (!ctx->dir_info) {
- ctx->dir_info_count = 0;
- retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
- if (retval)
- num_dirs = 1024; /* Guess */
- ctx->dir_info_size = num_dirs + 10;
- ctx->dir_info = (struct dir_info *)
- e2fsck_allocate_memory(ctx, ctx->dir_info_size
- * sizeof (struct dir_info),
- "directory map");
- }
-
- if (ctx->dir_info_count >= ctx->dir_info_size) {
- old_size = ctx->dir_info_size * sizeof(struct dir_info);
- ctx->dir_info_size += 10;
- retval = ext2fs_resize_mem(old_size, ctx->dir_info_size *
- sizeof(struct dir_info),
- &ctx->dir_info);
- if (retval) {
- ctx->dir_info_size -= 10;
- return;
- }
- }
-
- /*
- * Normally, add_dir_info is called with each inode in
- * sequential order; but once in a while (like when pass 3
- * needs to recreate the root directory or lost+found
- * directory) it is called out of order. In those cases, we
- * need to move the dir_info entries down to make room, since
- * the dir_info array needs to be sorted by inode number for
- * get_dir_info()'s sake.
- */
- if (ctx->dir_info_count &&
- ctx->dir_info[ctx->dir_info_count-1].ino >= ino) {
- for (i = ctx->dir_info_count-1; i > 0; i--)
- if (ctx->dir_info[i-1].ino < ino)
- break;
- dir = &ctx->dir_info[i];
- if (dir->ino != ino)
- for (j = ctx->dir_info_count++; j > i; j--)
- ctx->dir_info[j] = ctx->dir_info[j-1];
- } else
- dir = &ctx->dir_info[ctx->dir_info_count++];
-
- dir->ino = ino;
- dir->dotdot = parent;
- dir->parent = parent;
-}
-
-/*
- * get_dir_info() --- given an inode number, try to find the directory
- * information entry for it.
- */
-static struct dir_info *e2fsck_get_dir_info(e2fsck_t ctx, ext2_ino_t ino)
-{
- int low, high, mid;
-
- low = 0;
- high = ctx->dir_info_count-1;
- if (!ctx->dir_info)
- return 0;
- if (ino == ctx->dir_info[low].ino)
- return &ctx->dir_info[low];
- if (ino == ctx->dir_info[high].ino)
- return &ctx->dir_info[high];
-
- while (low < high) {
- mid = (low+high)/2;
- if (mid == low || mid == high)
- break;
- if (ino == ctx->dir_info[mid].ino)
- return &ctx->dir_info[mid];
- if (ino < ctx->dir_info[mid].ino)
- high = mid;
- else
- low = mid;
- }
- return 0;
-}
-
-/*
- * Free the dir_info structure when it isn't needed any more.
- */
-static void e2fsck_free_dir_info(e2fsck_t ctx)
-{
- ext2fs_free_mem(&ctx->dir_info);
- ctx->dir_info_size = 0;
- ctx->dir_info_count = 0;
-}
-
-/*
- * Return the count of number of directories in the dir_info structure
- */
-static int e2fsck_get_num_dirinfo(e2fsck_t ctx)
-{
- return ctx->dir_info_count;
-}
-
-/*
- * A simple interator function
- */
-static struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx, int *control)
-{
- if (*control >= ctx->dir_info_count)
- return 0;
-
- return ctx->dir_info + (*control)++;
-}
-
-/*
- * dirinfo.c --- maintains the directory information table for e2fsck.
- *
- */
-
-#ifdef ENABLE_HTREE
-
-/*
- * This subroutine is called during pass1 to create a directory info
- * entry. During pass1, the passed-in parent is 0; it will get filled
- * in during pass2.
- */
-static void e2fsck_add_dx_dir(e2fsck_t ctx, ext2_ino_t ino, int num_blocks)
-{
- struct dx_dir_info *dir;
- int i, j;
- errcode_t retval;
- unsigned long old_size;
-
- if (!ctx->dx_dir_info) {
- ctx->dx_dir_info_count = 0;
- ctx->dx_dir_info_size = 100; /* Guess */
- ctx->dx_dir_info = (struct dx_dir_info *)
- e2fsck_allocate_memory(ctx, ctx->dx_dir_info_size
- * sizeof (struct dx_dir_info),
- "directory map");
- }
-
- if (ctx->dx_dir_info_count >= ctx->dx_dir_info_size) {
- old_size = ctx->dx_dir_info_size * sizeof(struct dx_dir_info);
- ctx->dx_dir_info_size += 10;
- retval = ext2fs_resize_mem(old_size, ctx->dx_dir_info_size *
- sizeof(struct dx_dir_info),
- &ctx->dx_dir_info);
- if (retval) {
- ctx->dx_dir_info_size -= 10;
- return;
- }
- }
-
- /*
- * Normally, add_dx_dir_info is called with each inode in
- * sequential order; but once in a while (like when pass 3
- * needs to recreate the root directory or lost+found
- * directory) it is called out of order. In those cases, we
- * need to move the dx_dir_info entries down to make room, since
- * the dx_dir_info array needs to be sorted by inode number for
- * get_dx_dir_info()'s sake.
- */
- if (ctx->dx_dir_info_count &&
- ctx->dx_dir_info[ctx->dx_dir_info_count-1].ino >= ino) {
- for (i = ctx->dx_dir_info_count-1; i > 0; i--)
- if (ctx->dx_dir_info[i-1].ino < ino)
- break;
- dir = &ctx->dx_dir_info[i];
- if (dir->ino != ino)
- for (j = ctx->dx_dir_info_count++; j > i; j--)
- ctx->dx_dir_info[j] = ctx->dx_dir_info[j-1];
- } else
- dir = &ctx->dx_dir_info[ctx->dx_dir_info_count++];
-
- dir->ino = ino;
- dir->numblocks = num_blocks;
- dir->hashversion = 0;
- dir->dx_block = e2fsck_allocate_memory(ctx, num_blocks
- * sizeof (struct dx_dirblock_info),
- "dx_block info array");
-
-}
-
-/*
- * get_dx_dir_info() --- given an inode number, try to find the directory
- * information entry for it.
- */
-static struct dx_dir_info *e2fsck_get_dx_dir_info(e2fsck_t ctx, ext2_ino_t ino)
-{
- int low, high, mid;
-
- low = 0;
- high = ctx->dx_dir_info_count-1;
- if (!ctx->dx_dir_info)
- return 0;
- if (ino == ctx->dx_dir_info[low].ino)
- return &ctx->dx_dir_info[low];
- if (ino == ctx->dx_dir_info[high].ino)
- return &ctx->dx_dir_info[high];
-
- while (low < high) {
- mid = (low+high)/2;
- if (mid == low || mid == high)
- break;
- if (ino == ctx->dx_dir_info[mid].ino)
- return &ctx->dx_dir_info[mid];
- if (ino < ctx->dx_dir_info[mid].ino)
- high = mid;
- else
- low = mid;
- }
- return 0;
-}
-
-/*
- * Free the dx_dir_info structure when it isn't needed any more.
- */
-static void e2fsck_free_dx_dir_info(e2fsck_t ctx)
-{
- int i;
- struct dx_dir_info *dir;
-
- if (ctx->dx_dir_info) {
- dir = ctx->dx_dir_info;
- for (i=0; i < ctx->dx_dir_info_count; i++) {
- ext2fs_free_mem(&dir->dx_block);
- }
- ext2fs_free_mem(&ctx->dx_dir_info);
- }
- ctx->dx_dir_info_size = 0;
- ctx->dx_dir_info_count = 0;
-}
-
-/*
- * A simple interator function
- */
-static struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control)
-{
- if (*control >= ctx->dx_dir_info_count)
- return 0;
-
- return ctx->dx_dir_info + (*control)++;
-}
-
-#endif /* ENABLE_HTREE */
-/*
- * e2fsck.c - a consistency checker for the new extended file system.
- *
- */
-
-/*
- * This function allocates an e2fsck context
- */
-static errcode_t e2fsck_allocate_context(e2fsck_t *ret)
-{
- e2fsck_t context;
- errcode_t retval;
-
- retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &context);
- if (retval)
- return retval;
-
- memset(context, 0, sizeof(struct e2fsck_struct));
-
- context->process_inode_size = 256;
- context->ext_attr_ver = 2;
-
- *ret = context;
- return 0;
-}
-
-struct ea_refcount_el {
- blk_t ea_blk;
- int ea_count;
-};
-
-struct ea_refcount {
- blk_t count;
- blk_t size;
- blk_t cursor;
- struct ea_refcount_el *list;
-};
-
-static void ea_refcount_free(ext2_refcount_t refcount)
-{
- if (!refcount)
- return;
-
- ext2fs_free_mem(&refcount->list);
- ext2fs_free_mem(&refcount);
-}
-
-/*
- * This function resets an e2fsck context; it is called when e2fsck
- * needs to be restarted.
- */
-static errcode_t e2fsck_reset_context(e2fsck_t ctx)
-{
- ctx->flags = 0;
- ctx->lost_and_found = 0;
- ctx->bad_lost_and_found = 0;
- ext2fs_free_inode_bitmap(ctx->inode_used_map);
- ctx->inode_used_map = 0;
- ext2fs_free_inode_bitmap(ctx->inode_dir_map);
- ctx->inode_dir_map = 0;
- ext2fs_free_inode_bitmap(ctx->inode_reg_map);
- ctx->inode_reg_map = 0;
- ext2fs_free_block_bitmap(ctx->block_found_map);
- ctx->block_found_map = 0;
- ext2fs_free_icount(ctx->inode_link_info);
- ctx->inode_link_info = 0;
- if (ctx->journal_io) {
- if (ctx->fs && ctx->fs->io != ctx->journal_io)
- io_channel_close(ctx->journal_io);
- ctx->journal_io = 0;
- }
- if (ctx->fs) {
- ext2fs_free_dblist(ctx->fs->dblist);
- ctx->fs->dblist = 0;
- }
- e2fsck_free_dir_info(ctx);
-#ifdef ENABLE_HTREE
- e2fsck_free_dx_dir_info(ctx);
-#endif
- ea_refcount_free(ctx->refcount);
- ctx->refcount = 0;
- ea_refcount_free(ctx->refcount_extra);
- ctx->refcount_extra = 0;
- ext2fs_free_block_bitmap(ctx->block_dup_map);
- ctx->block_dup_map = 0;
- ext2fs_free_block_bitmap(ctx->block_ea_map);
- ctx->block_ea_map = 0;
- ext2fs_free_inode_bitmap(ctx->inode_bad_map);
- ctx->inode_bad_map = 0;
- ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
- ctx->inode_imagic_map = 0;
- ext2fs_u32_list_free(ctx->dirs_to_hash);
- ctx->dirs_to_hash = 0;
-
- /*
- * Clear the array of invalid meta-data flags
- */
- ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag);
- ext2fs_free_mem(&ctx->invalid_block_bitmap_flag);
- ext2fs_free_mem(&ctx->invalid_inode_table_flag);
-
- /* Clear statistic counters */
- ctx->fs_directory_count = 0;
- ctx->fs_regular_count = 0;
- ctx->fs_blockdev_count = 0;
- ctx->fs_chardev_count = 0;
- ctx->fs_links_count = 0;
- ctx->fs_symlinks_count = 0;
- ctx->fs_fast_symlinks_count = 0;
- ctx->fs_fifo_count = 0;
- ctx->fs_total_count = 0;
- ctx->fs_sockets_count = 0;
- ctx->fs_ind_count = 0;
- ctx->fs_dind_count = 0;
- ctx->fs_tind_count = 0;
- ctx->fs_fragmented = 0;
- ctx->large_files = 0;
-
- /* Reset the superblock to the user's requested value */
- ctx->superblock = ctx->use_superblock;
-
- return 0;
-}
-
-static void e2fsck_free_context(e2fsck_t ctx)
-{
- if (!ctx)
- return;
-
- e2fsck_reset_context(ctx);
- if (ctx->blkid)
- blkid_put_cache(ctx->blkid);
-
- ext2fs_free_mem(&ctx);
-}
-
-/*
- * ea_refcount.c
- */
-
-/*
- * The strategy we use for keeping track of EA refcounts is as
- * follows. We keep a sorted array of first EA blocks and its
- * reference counts. Once the refcount has dropped to zero, it is
- * removed from the array to save memory space. Once the EA block is
- * checked, its bit is set in the block_ea_map bitmap.
- */
-
-
-static errcode_t ea_refcount_create(int size, ext2_refcount_t *ret)
-{
- ext2_refcount_t refcount;
- errcode_t retval;
- size_t bytes;
-
- retval = ext2fs_get_mem(sizeof(struct ea_refcount), &refcount);
- if (retval)
- return retval;
- memset(refcount, 0, sizeof(struct ea_refcount));
-
- if (!size)
- size = 500;
- refcount->size = size;
- bytes = (size_t) (size * sizeof(struct ea_refcount_el));
-#ifdef DEBUG
- printf("Refcount allocated %d entries, %d bytes.\n",
- refcount->size, bytes);
-#endif
- retval = ext2fs_get_mem(bytes, &refcount->list);
- if (retval)
- goto errout;
- memset(refcount->list, 0, bytes);
-
- refcount->count = 0;
- refcount->cursor = 0;
-
- *ret = refcount;
- return 0;
-
-errout:
- ea_refcount_free(refcount);
- return retval;
-}
-
-/*
- * collapse_refcount() --- go through the refcount array, and get rid
- * of any count == zero entries
- */
-static void refcount_collapse(ext2_refcount_t refcount)
-{
- unsigned int i, j;
- struct ea_refcount_el *list;
-
- list = refcount->list;
- for (i = 0, j = 0; i < refcount->count; i++) {
- if (list[i].ea_count) {
- if (i != j)
- list[j] = list[i];
- j++;
- }
- }
-#if defined(DEBUG) || defined(TEST_PROGRAM)
- printf("Refcount_collapse: size was %d, now %d\n",
- refcount->count, j);
-#endif
- refcount->count = j;
-}
-
-
-/*
- * insert_refcount_el() --- Insert a new entry into the sorted list at a
- * specified position.
- */
-static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
- blk_t blk, int pos)
-{
- struct ea_refcount_el *el;
- errcode_t retval;
- blk_t new_size = 0;
- int num;
-
- if (refcount->count >= refcount->size) {
- new_size = refcount->size + 100;
-#ifdef DEBUG
- printf("Reallocating refcount %d entries...\n", new_size);
-#endif
- retval = ext2fs_resize_mem((size_t) refcount->size *
- sizeof(struct ea_refcount_el),
- (size_t) new_size *
- sizeof(struct ea_refcount_el),
- &refcount->list);
- if (retval)
- return 0;
- refcount->size = new_size;
- }
- num = (int) refcount->count - pos;
- if (num < 0)
- return 0; /* should never happen */
- if (num) {
- memmove(&refcount->list[pos+1], &refcount->list[pos],
- sizeof(struct ea_refcount_el) * num);
- }
- refcount->count++;
- el = &refcount->list[pos];
- el->ea_count = 0;
- el->ea_blk = blk;
- return el;
-}
-
-
-/*
- * get_refcount_el() --- given an block number, try to find refcount
- * information in the sorted list. If the create flag is set,
- * and we can't find an entry, create one in the sorted list.
- */
-static struct ea_refcount_el *get_refcount_el(ext2_refcount_t refcount,
- blk_t blk, int create)
-{
- float range;
- int low, high, mid;
- blk_t lowval, highval;
-
- if (!refcount || !refcount->list)
- return 0;
-retry:
- low = 0;
- high = (int) refcount->count-1;
- if (create && ((refcount->count == 0) ||
- (blk > refcount->list[high].ea_blk))) {
- if (refcount->count >= refcount->size)
- refcount_collapse(refcount);
-
- return insert_refcount_el(refcount, blk,
- (unsigned) refcount->count);
- }
- if (refcount->count == 0)
- return 0;
-
- if (refcount->cursor >= refcount->count)
- refcount->cursor = 0;
- if (blk == refcount->list[refcount->cursor].ea_blk)
- return &refcount->list[refcount->cursor++];
-#ifdef DEBUG
- printf("Non-cursor get_refcount_el: %u\n", blk);
-#endif
- while (low <= high) {
- if (low == high)
- mid = low;
- else {
- /* Interpolate for efficiency */
- lowval = refcount->list[low].ea_blk;
- highval = refcount->list[high].ea_blk;
-
- if (blk < lowval)
- range = 0;
- else if (blk > highval)
- range = 1;
- else
- range = ((float) (blk - lowval)) /
- (highval - lowval);
- mid = low + ((int) (range * (high-low)));
- }
-
- if (blk == refcount->list[mid].ea_blk) {
- refcount->cursor = mid+1;
- return &refcount->list[mid];
- }
- if (blk < refcount->list[mid].ea_blk)
- high = mid-1;
- else
- low = mid+1;
- }
- /*
- * If we need to create a new entry, it should be right at
- * low (where high will be left at low-1).
- */
- if (create) {
- if (refcount->count >= refcount->size) {
- refcount_collapse(refcount);
- if (refcount->count < refcount->size)
- goto retry;
- }
- return insert_refcount_el(refcount, blk, low);
- }
- return 0;
-}
-
-static errcode_t
-ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
-{
- struct ea_refcount_el *el;
-
- el = get_refcount_el(refcount, blk, 1);
- if (!el)
- return EXT2_ET_NO_MEMORY;
- el->ea_count++;
-
- if (ret)
- *ret = el->ea_count;
- return 0;
-}
-
-static errcode_t
-ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
-{
- struct ea_refcount_el *el;
-
- el = get_refcount_el(refcount, blk, 0);
- if (!el || el->ea_count == 0)
- return EXT2_ET_INVALID_ARGUMENT;
-
- el->ea_count--;
-
- if (ret)
- *ret = el->ea_count;
- return 0;
-}
-
-static errcode_t
-ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
-{
- struct ea_refcount_el *el;
-
- /*
- * Get the refcount element
- */
- el = get_refcount_el(refcount, blk, count ? 1 : 0);
- if (!el)
- return count ? EXT2_ET_NO_MEMORY : 0;
- el->ea_count = count;
- return 0;
-}
-
-static inline void ea_refcount_intr_begin(ext2_refcount_t refcount)
-{
- refcount->cursor = 0;
-}
-
-
-static blk_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret)
-{
- struct ea_refcount_el *list;
-
- while (1) {
- if (refcount->cursor >= refcount->count)
- return 0;
- list = refcount->list;
- if (list[refcount->cursor].ea_count) {
- if (ret)
- *ret = list[refcount->cursor].ea_count;
- return list[refcount->cursor++].ea_blk;
- }
- refcount->cursor++;
- }
-}
-
-
-/*
- * ehandler.c --- handle bad block errors which come up during the
- * course of an e2fsck session.
- */
-
-
-static const char *operation;
-
-static errcode_t
-e2fsck_handle_read_error(io_channel channel, unsigned long block, int count,
- void *data, size_t size FSCK_ATTR((unused)),
- int actual FSCK_ATTR((unused)), errcode_t error)
-{
- int i;
- char *p;
- ext2_filsys fs = (ext2_filsys) channel->app_data;
- e2fsck_t ctx;
-
- ctx = (e2fsck_t) fs->priv_data;
-
- /*
- * If more than one block was read, try reading each block
- * separately. We could use the actual bytes read to figure
- * out where to start, but we don't bother.
- */
- if (count > 1) {
- p = (char *) data;
- for (i=0; i < count; i++, p += channel->block_size, block++) {
- error = io_channel_read_blk(channel, block,
- 1, p);
- if (error)
- return error;
- }
- return 0;
- }
- if (operation)
- printf(_("Error reading block %lu (%s) while %s. "), block,
- error_message(error), operation);
- else
- printf(_("Error reading block %lu (%s). "), block,
- error_message(error));
- preenhalt(ctx);
- if (ask(ctx, _("Ignore error"), 1)) {
- if (ask(ctx, _("Force rewrite"), 1))
- io_channel_write_blk(channel, block, 1, data);
- return 0;
- }
-
- return error;
-}
-
-static errcode_t
-e2fsck_handle_write_error(io_channel channel, unsigned long block, int count,
- const void *data, size_t size FSCK_ATTR((unused)),
- int actual FSCK_ATTR((unused)), errcode_t error)
-{
- int i;
- const char *p;
- ext2_filsys fs = (ext2_filsys) channel->app_data;
- e2fsck_t ctx;
-
- ctx = (e2fsck_t) fs->priv_data;
-
- /*
- * If more than one block was written, try writing each block
- * separately. We could use the actual bytes read to figure
- * out where to start, but we don't bother.
- */
- if (count > 1) {
- p = (const char *) data;
- for (i=0; i < count; i++, p += channel->block_size, block++) {
- error = io_channel_write_blk(channel, block,
- 1, p);
- if (error)
- return error;
- }
- return 0;
- }
-
- if (operation)
- printf(_("Error writing block %lu (%s) while %s. "), block,
- error_message(error), operation);
- else
- printf(_("Error writing block %lu (%s). "), block,
- error_message(error));
- preenhalt(ctx);
- if (ask(ctx, _("Ignore error"), 1))
- return 0;
-
- return error;
-}
-
-static const char *ehandler_operation(const char *op)
-{
- const char *ret = operation;
-
- operation = op;
- return ret;
-}
-
-static void ehandler_init(io_channel channel)
-{
- channel->read_error = e2fsck_handle_read_error;
- channel->write_error = e2fsck_handle_write_error;
-}
-
-/*
- * journal.c --- code for handling the "ext3" journal
- *
- * Copyright (C) 2000 Andreas Dilger
- * Copyright (C) 2000 Theodore Ts'o
- *
- * Parts of the code are based on fs/jfs/journal.c by Stephen C. Tweedie
- * Copyright (C) 1999 Red Hat Software
- *
- * This file may be redistributed under the terms of the
- * GNU General Public License version 2 or at your discretion
- * any later version.
- */
-
-/*
- * Define USE_INODE_IO to use the inode_io.c / fileio.c codepaths.
- * This creates a larger static binary, and a smaller binary using
- * shared libraries. It's also probably slightly less CPU-efficient,
- * which is why it's not on by default. But, it's a good way of
- * testing the functions in inode_io.c and fileio.c.
- */
-#undef USE_INODE_IO
-
-/* Kernel compatibility functions for handling the journal. These allow us
- * to use the recovery.c file virtually unchanged from the kernel, so we
- * don't have to do much to keep kernel and user recovery in sync.
- */
-static int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys)
-{
-#ifdef USE_INODE_IO
- *phys = block;
- return 0;
-#else
- struct inode *inode = journal->j_inode;
- errcode_t retval;
- blk_t pblk;
-
- if (!inode) {
- *phys = block;
- return 0;
- }
-
- retval= ext2fs_bmap(inode->i_ctx->fs, inode->i_ino,
- &inode->i_ext2, NULL, 0, block, &pblk);
- *phys = pblk;
- return retval;
-#endif
-}
-
-static struct buffer_head *getblk(kdev_t kdev, blk_t blocknr, int blocksize)
-{
- struct buffer_head *bh;
-
- bh = e2fsck_allocate_memory(kdev->k_ctx, sizeof(*bh), "block buffer");
- if (!bh)
- return NULL;
-
- bh->b_ctx = kdev->k_ctx;
- if (kdev->k_dev == K_DEV_FS)
- bh->b_io = kdev->k_ctx->fs->io;
- else
- bh->b_io = kdev->k_ctx->journal_io;
- bh->b_size = blocksize;
- bh->b_blocknr = blocknr;
-
- return bh;
-}
-
-static void sync_blockdev(kdev_t kdev)
-{
- io_channel io;
-
- if (kdev->k_dev == K_DEV_FS)
- io = kdev->k_ctx->fs->io;
- else
- io = kdev->k_ctx->journal_io;
-
- io_channel_flush(io);
-}
-
-static void ll_rw_block(int rw, int nr, struct buffer_head *bhp[])
-{
- int retval;
- struct buffer_head *bh;
-
- for (; nr > 0; --nr) {
- bh = *bhp++;
- if (rw == READ && !bh->b_uptodate) {
- retval = io_channel_read_blk(bh->b_io,
- bh->b_blocknr,
- 1, bh->b_data);
- if (retval) {
- bb_error_msg("while reading block %lu",
- (unsigned long) bh->b_blocknr);
- bh->b_err = retval;
- continue;
- }
- bh->b_uptodate = 1;
- } else if (rw == WRITE && bh->b_dirty) {
- retval = io_channel_write_blk(bh->b_io,
- bh->b_blocknr,
- 1, bh->b_data);
- if (retval) {
- bb_error_msg("while writing block %lu",
- (unsigned long) bh->b_blocknr);
- bh->b_err = retval;
- continue;
- }
- bh->b_dirty = 0;
- bh->b_uptodate = 1;
- }
- }
-}
-
-static void mark_buffer_dirty(struct buffer_head *bh)
-{
- bh->b_dirty = 1;
-}
-
-static inline void mark_buffer_clean(struct buffer_head * bh)
-{
- bh->b_dirty = 0;
-}
-
-static void brelse(struct buffer_head *bh)
-{
- if (bh->b_dirty)
- ll_rw_block(WRITE, 1, &bh);
- ext2fs_free_mem(&bh);
-}
-
-static int buffer_uptodate(struct buffer_head *bh)
-{
- return bh->b_uptodate;
-}
-
-static inline void mark_buffer_uptodate(struct buffer_head *bh, int val)
-{
- bh->b_uptodate = val;
-}
-
-static void wait_on_buffer(struct buffer_head *bh)
-{
- if (!bh->b_uptodate)
- ll_rw_block(READ, 1, &bh);
-}
-
-
-static void e2fsck_clear_recover(e2fsck_t ctx, int error)
-{
- ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
-
- /* if we had an error doing journal recovery, we need a full fsck */
- if (error)
- ctx->fs->super->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
-}
-
-static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- struct ext2_super_block jsuper;
- struct problem_context pctx;
- struct buffer_head *bh;
- struct inode *j_inode = NULL;
- struct kdev_s *dev_fs = NULL, *dev_journal;
- const char *journal_name = 0;
- journal_t *journal = NULL;
- errcode_t retval = 0;
- io_manager io_ptr = 0;
- unsigned long start = 0;
- blk_t blk;
- int ext_journal = 0;
- int tried_backup_jnl = 0;
- int i;
-
- clear_problem_context(&pctx);
-
- journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
- if (!journal) {
- return EXT2_ET_NO_MEMORY;
- }
-
- dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev");
- if (!dev_fs) {
- retval = EXT2_ET_NO_MEMORY;
- goto errout;
- }
- dev_journal = dev_fs+1;
-
- dev_fs->k_ctx = dev_journal->k_ctx = ctx;
- dev_fs->k_dev = K_DEV_FS;
- dev_journal->k_dev = K_DEV_JOURNAL;
-
- journal->j_dev = dev_journal;
- journal->j_fs_dev = dev_fs;
- journal->j_inode = NULL;
- journal->j_blocksize = ctx->fs->blocksize;
-
- if (uuid_is_null(sb->s_journal_uuid)) {
- if (!sb->s_journal_inum)
- return EXT2_ET_BAD_INODE_NUM;
- j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode),
- "journal inode");
- if (!j_inode) {
- retval = EXT2_ET_NO_MEMORY;
- goto errout;
- }
-
- j_inode->i_ctx = ctx;
- j_inode->i_ino = sb->s_journal_inum;
-
- if ((retval = ext2fs_read_inode(ctx->fs,
- sb->s_journal_inum,
- &j_inode->i_ext2))) {
- try_backup_journal:
- if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS ||
- tried_backup_jnl)
- goto errout;
- memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode));
- memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks,
- EXT2_N_BLOCKS*4);
- j_inode->i_ext2.i_size = sb->s_jnl_blocks[16];
- j_inode->i_ext2.i_links_count = 1;
- j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600;
- tried_backup_jnl++;
- }
- if (!j_inode->i_ext2.i_links_count ||
- !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) {
- retval = EXT2_ET_NO_JOURNAL;
- goto try_backup_journal;
- }
- if (j_inode->i_ext2.i_size / journal->j_blocksize <
- JFS_MIN_JOURNAL_BLOCKS) {
- retval = EXT2_ET_JOURNAL_TOO_SMALL;
- goto try_backup_journal;
- }
- for (i=0; i < EXT2_N_BLOCKS; i++) {
- blk = j_inode->i_ext2.i_block[i];
- if (!blk) {
- if (i < EXT2_NDIR_BLOCKS) {
- retval = EXT2_ET_JOURNAL_TOO_SMALL;
- goto try_backup_journal;
- }
- continue;
- }
- if (blk < sb->s_first_data_block ||
- blk >= sb->s_blocks_count) {
- retval = EXT2_ET_BAD_BLOCK_NUM;
- goto try_backup_journal;
- }
- }
- journal->j_maxlen = j_inode->i_ext2.i_size / journal->j_blocksize;
-
-#ifdef USE_INODE_IO
- retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum,
- &j_inode->i_ext2,
- &journal_name);
- if (retval)
- goto errout;
-
- io_ptr = inode_io_manager;
-#else
- journal->j_inode = j_inode;
- ctx->journal_io = ctx->fs->io;
- if ((retval = journal_bmap(journal, 0, &start)) != 0)
- goto errout;
-#endif
- } else {
- ext_journal = 1;
- if (!ctx->journal_name) {
- char uuid[37];
-
- uuid_unparse(sb->s_journal_uuid, uuid);
- ctx->journal_name = blkid_get_devname(ctx->blkid,
- "UUID", uuid);
- if (!ctx->journal_name)
- ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev);
- }
- journal_name = ctx->journal_name;
-
- if (!journal_name) {
- fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx);
- return EXT2_ET_LOAD_EXT_JOURNAL;
- }
-
- io_ptr = unix_io_manager;
- }
-
-#ifndef USE_INODE_IO
- if (ext_journal)
-#endif
- retval = io_ptr->open(journal_name, IO_FLAG_RW,
- &ctx->journal_io);
- if (retval)
- goto errout;
-
- io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize);
-
- if (ext_journal) {
- if (ctx->fs->blocksize == 1024)
- start = 1;
- bh = getblk(dev_journal, start, ctx->fs->blocksize);
- if (!bh) {
- retval = EXT2_ET_NO_MEMORY;
- goto errout;
- }
- ll_rw_block(READ, 1, &bh);
- if ((retval = bh->b_err) != 0)
- goto errout;
- memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024,
- sizeof(jsuper));
- brelse(bh);
-#if BB_BIG_ENDIAN
- if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
- ext2fs_swap_super(&jsuper);
-#endif
- if (jsuper.s_magic != EXT2_SUPER_MAGIC ||
- !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
- fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx);
- retval = EXT2_ET_LOAD_EXT_JOURNAL;
- goto errout;
- }
- /* Make sure the journal UUID is correct */
- if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid,
- sizeof(jsuper.s_uuid))) {
- fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx);
- retval = EXT2_ET_LOAD_EXT_JOURNAL;
- goto errout;
- }
-
- journal->j_maxlen = jsuper.s_blocks_count;
- start++;
- }
-
- if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) {
- retval = EXT2_ET_NO_MEMORY;
- goto errout;
- }
-
- journal->j_sb_buffer = bh;
- journal->j_superblock = (journal_superblock_t *)bh->b_data;
-
-#ifdef USE_INODE_IO
- ext2fs_free_mem(&j_inode);
-#endif
-
- *ret_journal = journal;
- return 0;
-
-errout:
- ext2fs_free_mem(&dev_fs);
- ext2fs_free_mem(&j_inode);
- ext2fs_free_mem(&journal);
- return retval;
-
-}
-
-static errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx,
- struct problem_context *pctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- int recover = ctx->fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER;
- int has_journal = ctx->fs->super->s_feature_compat &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL;
-
- if (has_journal || sb->s_journal_inum) {
- /* The journal inode is bogus, remove and force full fsck */
- pctx->ino = sb->s_journal_inum;
- if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) {
- if (has_journal && sb->s_journal_inum)
- printf("*** ext3 journal has been deleted - "
- "filesystem is now ext2 only ***\n\n");
- sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- sb->s_journal_inum = 0;
- ctx->flags |= E2F_FLAG_JOURNAL_INODE; /* FIXME: todo */
- e2fsck_clear_recover(ctx, 1);
- return 0;
- }
- return EXT2_ET_BAD_INODE_NUM;
- } else if (recover) {
- if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) {
- e2fsck_clear_recover(ctx, 1);
- return 0;
- }
- return EXT2_ET_UNSUPP_FEATURE;
- }
- return 0;
-}
-
-#define V1_SB_SIZE 0x0024
-static void clear_v2_journal_fields(journal_t *journal)
-{
- e2fsck_t ctx = journal->j_dev->k_ctx;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx))
- return;
-
- memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0,
- ctx->fs->blocksize-V1_SB_SIZE);
- mark_buffer_dirty(journal->j_sb_buffer);
-}
-
-
-static errcode_t e2fsck_journal_load(journal_t *journal)
-{
- e2fsck_t ctx = journal->j_dev->k_ctx;
- journal_superblock_t *jsb;
- struct buffer_head *jbh = journal->j_sb_buffer;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- ll_rw_block(READ, 1, &jbh);
- if (jbh->b_err) {
- bb_error_msg(_("reading journal superblock"));
- return jbh->b_err;
- }
-
- jsb = journal->j_superblock;
- /* If we don't even have JFS_MAGIC, we probably have a wrong inode */
- if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER))
- return e2fsck_journal_fix_bad_inode(ctx, &pctx);
-
- switch (ntohl(jsb->s_header.h_blocktype)) {
- case JFS_SUPERBLOCK_V1:
- journal->j_format_version = 1;
- if (jsb->s_feature_compat ||
- jsb->s_feature_incompat ||
- jsb->s_feature_ro_compat ||
- jsb->s_nr_users)
- clear_v2_journal_fields(journal);
- break;
-
- case JFS_SUPERBLOCK_V2:
- journal->j_format_version = 2;
- if (ntohl(jsb->s_nr_users) > 1 &&
- uuid_is_null(ctx->fs->super->s_journal_uuid))
- clear_v2_journal_fields(journal);
- if (ntohl(jsb->s_nr_users) > 1) {
- fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx);
- return EXT2_ET_JOURNAL_UNSUPP_VERSION;
- }
- break;
-
- /*
- * These should never appear in a journal super block, so if
- * they do, the journal is badly corrupted.
- */
- case JFS_DESCRIPTOR_BLOCK:
- case JFS_COMMIT_BLOCK:
- case JFS_REVOKE_BLOCK:
- return EXT2_ET_CORRUPT_SUPERBLOCK;
-
- /* If we don't understand the superblock major type, but there
- * is a magic number, then it is likely to be a new format we
- * just don't understand, so leave it alone. */
- default:
- return EXT2_ET_JOURNAL_UNSUPP_VERSION;
- }
-
- if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES))
- return EXT2_ET_UNSUPP_FEATURE;
-
- if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES))
- return EXT2_ET_RO_UNSUPP_FEATURE;
-
- /* We have now checked whether we know enough about the journal
- * format to be able to proceed safely, so any other checks that
- * fail we should attempt to recover from. */
- if (jsb->s_blocksize != htonl(journal->j_blocksize)) {
- bb_error_msg(_("%s: no valid journal superblock found"),
- ctx->device_name);
- return EXT2_ET_CORRUPT_SUPERBLOCK;
- }
-
- if (ntohl(jsb->s_maxlen) < journal->j_maxlen)
- journal->j_maxlen = ntohl(jsb->s_maxlen);
- else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) {
- bb_error_msg(_("%s: journal too short"),
- ctx->device_name);
- return EXT2_ET_CORRUPT_SUPERBLOCK;
- }
-
- journal->j_tail_sequence = ntohl(jsb->s_sequence);
- journal->j_transaction_sequence = journal->j_tail_sequence;
- journal->j_tail = ntohl(jsb->s_start);
- journal->j_first = ntohl(jsb->s_first);
- journal->j_last = ntohl(jsb->s_maxlen);
-
- return 0;
-}
-
-static void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb,
- journal_t *journal)
-{
- char *p;
- union {
- uuid_t uuid;
- __u32 val[4];
- } u;
- __u32 new_seq = 0;
- int i;
-
- /* Leave a valid existing V1 superblock signature alone.
- * Anything unrecognisable we overwrite with a new V2
- * signature. */
-
- if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) ||
- jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) {
- jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
- jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);
- }
-
- /* Zero out everything else beyond the superblock header */
-
- p = ((char *) jsb) + sizeof(journal_header_t);
- memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t));
-
- jsb->s_blocksize = htonl(ctx->fs->blocksize);
- jsb->s_maxlen = htonl(journal->j_maxlen);
- jsb->s_first = htonl(1);
-
- /* Initialize the journal sequence number so that there is "no"
- * chance we will find old "valid" transactions in the journal.
- * This avoids the need to zero the whole journal (slow to do,
- * and risky when we are just recovering the filesystem).
- */
- uuid_generate(u.uuid);
- for (i = 0; i < 4; i ++)
- new_seq ^= u.val[i];
- jsb->s_sequence = htonl(new_seq);
-
- mark_buffer_dirty(journal->j_sb_buffer);
- ll_rw_block(WRITE, 1, &journal->j_sb_buffer);
-}
-
-static errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx,
- journal_t *journal,
- struct problem_context *pctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- int recover = ctx->fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER;
-
- if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
- if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) {
- e2fsck_journal_reset_super(ctx, journal->j_superblock,
- journal);
- journal->j_transaction_sequence = 1;
- e2fsck_clear_recover(ctx, recover);
- return 0;
- }
- return EXT2_ET_CORRUPT_SUPERBLOCK;
- } else if (e2fsck_journal_fix_bad_inode(ctx, pctx))
- return EXT2_ET_CORRUPT_SUPERBLOCK;
-
- return 0;
-}
-
-static void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal,
- int reset, int drop)
-{
- journal_superblock_t *jsb;
-
- if (drop)
- mark_buffer_clean(journal->j_sb_buffer);
- else if (!(ctx->options & E2F_OPT_READONLY)) {
- jsb = journal->j_superblock;
- jsb->s_sequence = htonl(journal->j_transaction_sequence);
- if (reset)
- jsb->s_start = 0; /* this marks the journal as empty */
- mark_buffer_dirty(journal->j_sb_buffer);
- }
- brelse(journal->j_sb_buffer);
-
- if (ctx->journal_io) {
- if (ctx->fs && ctx->fs->io != ctx->journal_io)
- io_channel_close(ctx->journal_io);
- ctx->journal_io = 0;
- }
-
-#ifndef USE_INODE_IO
- ext2fs_free_mem(&journal->j_inode);
-#endif
- ext2fs_free_mem(&journal->j_fs_dev);
- ext2fs_free_mem(&journal);
-}
-
-/*
- * This function makes sure that the superblock fields regarding the
- * journal are consistent.
- */
-static int e2fsck_check_ext3_journal(e2fsck_t ctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- journal_t *journal;
- int recover = ctx->fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER;
- struct problem_context pctx;
- problem_t problem;
- int reset = 0, force_fsck = 0;
- int retval;
-
- /* If we don't have any journal features, don't do anything more */
- if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
- !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
- uuid_is_null(sb->s_journal_uuid))
- return 0;
-
- clear_problem_context(&pctx);
- pctx.num = sb->s_journal_inum;
-
- retval = e2fsck_get_journal(ctx, &journal);
- if (retval) {
- if ((retval == EXT2_ET_BAD_INODE_NUM) ||
- (retval == EXT2_ET_BAD_BLOCK_NUM) ||
- (retval == EXT2_ET_JOURNAL_TOO_SMALL) ||
- (retval == EXT2_ET_NO_JOURNAL))
- return e2fsck_journal_fix_bad_inode(ctx, &pctx);
- return retval;
- }
-
- retval = e2fsck_journal_load(journal);
- if (retval) {
- if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
- ((retval == EXT2_ET_UNSUPP_FEATURE) &&
- (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT,
- &pctx))) ||
- ((retval == EXT2_ET_RO_UNSUPP_FEATURE) &&
- (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT,
- &pctx))) ||
- ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) &&
- (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx))))
- retval = e2fsck_journal_fix_corrupt_super(ctx, journal,
- &pctx);
- e2fsck_journal_release(ctx, journal, 0, 1);
- return retval;
- }
-
- /*
- * We want to make the flags consistent here. We will not leave with
- * needs_recovery set but has_journal clear. We can't get in a loop
- * with -y, -n, or -p, only if a user isn't making up their mind.
- */
-no_has_journal:
- if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
- recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
- pctx.str = "inode";
- if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
- if (recover &&
- !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
- goto no_has_journal;
- /*
- * Need a full fsck if we are releasing a
- * journal stored on a reserved inode.
- */
- force_fsck = recover ||
- (sb->s_journal_inum < EXT2_FIRST_INODE(sb));
- /* Clear all of the journal fields */
- sb->s_journal_inum = 0;
- sb->s_journal_dev = 0;
- memset(sb->s_journal_uuid, 0,
- sizeof(sb->s_journal_uuid));
- e2fsck_clear_recover(ctx, force_fsck);
- } else if (!(ctx->options & E2F_OPT_READONLY)) {
- sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- ext2fs_mark_super_dirty(ctx->fs);
- }
- }
-
- if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
- !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
- journal->j_superblock->s_start != 0) {
- /* Print status information */
- fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx);
- if (ctx->superblock)
- problem = PR_0_JOURNAL_RUN_DEFAULT;
- else
- problem = PR_0_JOURNAL_RUN;
- if (fix_problem(ctx, problem, &pctx)) {
- ctx->options |= E2F_OPT_FORCE;
- sb->s_feature_incompat |=
- EXT3_FEATURE_INCOMPAT_RECOVER;
- ext2fs_mark_super_dirty(ctx->fs);
- } else if (fix_problem(ctx,
- PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
- reset = 1;
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(ctx->fs);
- }
- /*
- * If the user answers no to the above question, we
- * ignore the fact that journal apparently has data;
- * accidentally replaying over valid data would be far
- * worse than skipping a questionable recovery.
- *
- * XXX should we abort with a fatal error here? What
- * will the ext3 kernel code do if a filesystem with
- * !NEEDS_RECOVERY but with a non-zero
- * journal->j_superblock->s_start is mounted?
- */
- }
-
- e2fsck_journal_release(ctx, journal, reset, 0);
- return retval;
-}
-
-static errcode_t recover_ext3_journal(e2fsck_t ctx)
-{
- journal_t *journal;
- int retval;
-
- journal_init_revoke_caches();
- retval = e2fsck_get_journal(ctx, &journal);
- if (retval)
- return retval;
-
- retval = e2fsck_journal_load(journal);
- if (retval)
- goto errout;
-
- retval = journal_init_revoke(journal, 1024);
- if (retval)
- goto errout;
-
- retval = -journal_recover(journal);
- if (retval)
- goto errout;
-
- if (journal->j_superblock->s_errno) {
- ctx->fs->super->s_state |= EXT2_ERROR_FS;
- ext2fs_mark_super_dirty(ctx->fs);
- journal->j_superblock->s_errno = 0;
- mark_buffer_dirty(journal->j_sb_buffer);
- }
-
-errout:
- journal_destroy_revoke(journal);
- journal_destroy_revoke_caches();
- e2fsck_journal_release(ctx, journal, 1, 0);
- return retval;
-}
-
-static int e2fsck_run_ext3_journal(e2fsck_t ctx)
-{
- io_manager io_ptr = ctx->fs->io->manager;
- int blocksize = ctx->fs->blocksize;
- errcode_t retval, recover_retval;
-
- printf(_("%s: recovering journal\n"), ctx->device_name);
- if (ctx->options & E2F_OPT_READONLY) {
- printf(_("%s: won't do journal recovery while read-only\n"),
- ctx->device_name);
- return EXT2_ET_FILE_RO;
- }
-
- if (ctx->fs->flags & EXT2_FLAG_DIRTY)
- ext2fs_flush(ctx->fs); /* Force out any modifications */
-
- recover_retval = recover_ext3_journal(ctx);
-
- /*
- * Reload the filesystem context to get up-to-date data from disk
- * because journal recovery will change the filesystem under us.
- */
- ext2fs_close(ctx->fs);
- retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW,
- ctx->superblock, blocksize, io_ptr,
- &ctx->fs);
-
- if (retval) {
- bb_error_msg(_("while trying to re-open %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
- ctx->fs->priv_data = ctx;
-
- /* Set the superblock flags */
- e2fsck_clear_recover(ctx, recover_retval);
- return recover_retval;
-}
-
-/*
- * This function will move the journal inode from a visible file in
- * the filesystem directory hierarchy to the reserved inode if necessary.
- */
-static const char * const journal_names[] = {
- ".journal", "journal", ".journal.dat", "journal.dat", 0 };
-
-static void e2fsck_move_ext3_journal(e2fsck_t ctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- struct problem_context pctx;
- struct ext2_inode inode;
- ext2_filsys fs = ctx->fs;
- ext2_ino_t ino;
- errcode_t retval;
- const char * const * cpp;
- int group, mount_flags;
-
- clear_problem_context(&pctx);
-
- /*
- * If the filesystem is opened read-only, or there is no
- * journal, then do nothing.
- */
- if ((ctx->options & E2F_OPT_READONLY) ||
- (sb->s_journal_inum == 0) ||
- !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- return;
-
- /*
- * Read in the journal inode
- */
- if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0)
- return;
-
- /*
- * If it's necessary to backup the journal inode, do so.
- */
- if ((sb->s_jnl_backup_type == 0) ||
- ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) &&
- memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) {
- if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) {
- memcpy(sb->s_jnl_blocks, inode.i_block,
- EXT2_N_BLOCKS*4);
- sb->s_jnl_blocks[16] = inode.i_size;
- sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
- ext2fs_mark_super_dirty(fs);
- fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
- }
- }
-
- /*
- * If the journal is already the hidden inode, then do nothing
- */
- if (sb->s_journal_inum == EXT2_JOURNAL_INO)
- return;
-
- /*
- * The journal inode had better have only one link and not be readable.
- */
- if (inode.i_links_count != 1)
- return;
-
- /*
- * If the filesystem is mounted, or we can't tell whether
- * or not it's mounted, do nothing.
- */
- retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags);
- if (retval || (mount_flags & EXT2_MF_MOUNTED))
- return;
-
- /*
- * If we can't find the name of the journal inode, then do
- * nothing.
- */
- for (cpp = journal_names; *cpp; cpp++) {
- retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp,
- strlen(*cpp), 0, &ino);
- if ((retval == 0) && (ino == sb->s_journal_inum))
- break;
- }
- if (*cpp == 0)
- return;
-
- /* We need the inode bitmap to be loaded */
- retval = ext2fs_read_bitmaps(fs);
- if (retval)
- return;
-
- pctx.str = *cpp;
- if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx))
- return;
-
- /*
- * OK, we've done all the checks, let's actually move the
- * journal inode. Errors at this point mean we need to force
- * an ext2 filesystem check.
- */
- if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0)
- goto err_out;
- if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0)
- goto err_out;
- sb->s_journal_inum = EXT2_JOURNAL_INO;
- ext2fs_mark_super_dirty(fs);
- fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
- inode.i_links_count = 0;
- inode.i_dtime = time(0);
- if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0)
- goto err_out;
-
- group = ext2fs_group_of_ino(fs, ino);
- ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
- ext2fs_mark_ib_dirty(fs);
- fs->group_desc[group].bg_free_inodes_count++;
- fs->super->s_free_inodes_count++;
- return;
-
-err_out:
- pctx.errcode = retval;
- fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx);
- fs->super->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(fs);
- return;
-}
-
-/*
- * message.c --- print e2fsck messages (with compression)
- *
- * print_e2fsck_message() prints a message to the user, using
- * compression techniques and expansions of abbreviations.
- *
- * The following % expansions are supported:
- *
- * %b <blk> block number
- * %B <blkcount> integer
- * %c <blk2> block number
- * %Di <dirent>->ino inode number
- * %Dn <dirent>->name string
- * %Dr <dirent>->rec_len
- * %Dl <dirent>->name_len
- * %Dt <dirent>->filetype
- * %d <dir> inode number
- * %g <group> integer
- * %i <ino> inode number
- * %Is <inode> -> i_size
- * %IS <inode> -> i_extra_isize
- * %Ib <inode> -> i_blocks
- * %Il <inode> -> i_links_count
- * %Im <inode> -> i_mode
- * %IM <inode> -> i_mtime
- * %IF <inode> -> i_faddr
- * %If <inode> -> i_file_acl
- * %Id <inode> -> i_dir_acl
- * %Iu <inode> -> i_uid
- * %Ig <inode> -> i_gid
- * %j <ino2> inode number
- * %m <com_err error message>
- * %N <num>
- * %p ext2fs_get_pathname of directory <ino>
- * %P ext2fs_get_pathname of <dirent>->ino with <ino2> as
- * the containing directory. (If dirent is NULL
- * then return the pathname of directory <ino2>)
- * %q ext2fs_get_pathname of directory <dir>
- * %Q ext2fs_get_pathname of directory <ino> with <dir> as
- * the containing directory.
- * %s <str> miscellaneous string
- * %S backup superblock
- * %X <num> hexadecimal format
- *
- * The following '@' expansions are supported:
- *
- * @a extended attribute
- * @A error allocating
- * @b block
- * @B bitmap
- * @c compress
- * @C conflicts with some other fs block
- * @D deleted
- * @d directory
- * @e entry
- * @E Entry '%Dn' in %p (%i)
- * @f filesystem
- * @F for @i %i (%Q) is
- * @g group
- * @h HTREE directory inode
- * @i inode
- * @I illegal
- * @j journal
- * @l lost+found
- * @L is a link
- * @m multiply-claimed
- * @n invalid
- * @o orphaned
- * @p problem in
- * @r root inode
- * @s should be
- * @S superblock
- * @u unattached
- * @v device
- * @z zero-length
- */
-
-
-/*
- * This structure defines the abbreviations used by the text strings
- * below. The first character in the string is the index letter. An
- * abbreviation of the form '@<i>' is expanded by looking up the index
- * letter <i> in the table below.
- */
-static const char * const abbrevs[] = {
- N_("aextended attribute"),
- N_("Aerror allocating"),
- N_("bblock"),
- N_("Bbitmap"),
- N_("ccompress"),
- N_("Cconflicts with some other fs @b"),
- N_("iinode"),
- N_("Iillegal"),
- N_("jjournal"),
- N_("Ddeleted"),
- N_("ddirectory"),
- N_("eentry"),
- N_("E@e '%Dn' in %p (%i)"),
- N_("ffilesystem"),
- N_("Ffor @i %i (%Q) is"),
- N_("ggroup"),
- N_("hHTREE @d @i"),
- N_("llost+found"),
- N_("Lis a link"),
- N_("mmultiply-claimed"),
- N_("ninvalid"),
- N_("oorphaned"),
- N_("pproblem in"),
- N_("rroot @i"),
- N_("sshould be"),
- N_("Ssuper@b"),
- N_("uunattached"),
- N_("vdevice"),
- N_("zzero-length"),
- "@@",
- 0
- };
-
-/*
- * Give more user friendly names to the "special" inodes.
- */
-#define num_special_inodes 11
-static const char * const special_inode_name[] =
-{
- N_("<The NULL inode>"), /* 0 */
- N_("<The bad blocks inode>"), /* 1 */
- "/", /* 2 */
- N_("<The ACL index inode>"), /* 3 */
- N_("<The ACL data inode>"), /* 4 */
- N_("<The boot loader inode>"), /* 5 */
- N_("<The undelete directory inode>"), /* 6 */
- N_("<The group descriptor inode>"), /* 7 */
- N_("<The journal inode>"), /* 8 */
- N_("<Reserved inode 9>"), /* 9 */
- N_("<Reserved inode 10>"), /* 10 */
-};
-
-/*
- * This function does "safe" printing. It will convert non-printable
- * ASCII characters using '^' and M- notation.
- */
-static void safe_print(const char *cp, int len)
-{
- unsigned char ch;
-
- if (len < 0)
- len = strlen(cp);
-
- while (len--) {
- ch = *cp++;
- if (ch > 128) {
- fputs("M-", stdout);
- ch -= 128;
- }
- if ((ch < 32) || (ch == 0x7f)) {
- fputc('^', stdout);
- ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
- }
- fputc(ch, stdout);
- }
-}
-
-
-/*
- * This function prints a pathname, using the ext2fs_get_pathname
- * function
- */
-static void print_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino)
-{
- errcode_t retval;
- char *path;
-
- if (!dir && (ino < num_special_inodes)) {
- fputs(_(special_inode_name[ino]), stdout);
- return;
- }
-
- retval = ext2fs_get_pathname(fs, dir, ino, &path);
- if (retval)
- fputs("???", stdout);
- else {
- safe_print(path, -1);
- ext2fs_free_mem(&path);
- }
-}
-
-static void print_e2fsck_message(e2fsck_t ctx, const char *msg,
- struct problem_context *pctx, int first);
-/*
- * This function handles the '@' expansion. We allow recursive
- * expansion; an @ expression can contain further '@' and '%'
- * expressions.
- */
-static void expand_at_expression(e2fsck_t ctx, char ch,
- struct problem_context *pctx,
- int *first)
-{
- const char * const *cpp;
- const char *str;
-
- /* Search for the abbreviation */
- for (cpp = abbrevs; *cpp; cpp++) {
- if (ch == *cpp[0])
- break;
- }
- if (*cpp) {
- str = _(*cpp) + 1;
- if (*first && islower(*str)) {
- *first = 0;
- fputc(toupper(*str++), stdout);
- }
- print_e2fsck_message(ctx, str, pctx, *first);
- } else
- printf("@%c", ch);
-}
-
-/*
- * This function expands '%IX' expressions
- */
-static void expand_inode_expression(char ch,
- struct problem_context *ctx)
-{
- struct ext2_inode *inode;
- struct ext2_inode_large *large_inode;
- char * time_str;
- time_t t;
- int do_gmt = -1;
-
- if (!ctx || !ctx->inode)
- goto no_inode;
-
- inode = ctx->inode;
- large_inode = (struct ext2_inode_large *) inode;
-
- switch (ch) {
- case 's':
- if (LINUX_S_ISDIR(inode->i_mode))
- printf("%u", inode->i_size);
- else {
- printf("%"PRIu64, (inode->i_size |
- ((uint64_t) inode->i_size_high << 32)));
- }
- break;
- case 'S':
- printf("%u", large_inode->i_extra_isize);
- break;
- case 'b':
- printf("%u", inode->i_blocks);
- break;
- case 'l':
- printf("%d", inode->i_links_count);
- break;
- case 'm':
- printf("0%o", inode->i_mode);
- break;
- case 'M':
- /* The diet libc doesn't respect the TZ environemnt variable */
- if (do_gmt == -1) {
- time_str = getenv("TZ");
- if (!time_str)
- time_str = "";
- do_gmt = !strcmp(time_str, "GMT");
- }
- t = inode->i_mtime;
- time_str = asctime(do_gmt ? gmtime(&t) : localtime(&t));
- printf("%.24s", time_str);
- break;
- case 'F':
- printf("%u", inode->i_faddr);
- break;
- case 'f':
- printf("%u", inode->i_file_acl);
- break;
- case 'd':
- printf("%u", (LINUX_S_ISDIR(inode->i_mode) ?
- inode->i_dir_acl : 0));
- break;
- case 'u':
- printf("%d", (inode->i_uid |
- (inode->osd2.linux2.l_i_uid_high << 16)));
- break;
- case 'g':
- printf("%d", (inode->i_gid |
- (inode->osd2.linux2.l_i_gid_high << 16)));
- break;
- default:
- no_inode:
- printf("%%I%c", ch);
- break;
- }
-}
-
-/*
- * This function expands '%dX' expressions
- */
-static void expand_dirent_expression(char ch,
- struct problem_context *ctx)
-{
- struct ext2_dir_entry *dirent;
- int len;
-
- if (!ctx || !ctx->dirent)
- goto no_dirent;
-
- dirent = ctx->dirent;
-
- switch (ch) {
- case 'i':
- printf("%u", dirent->inode);
- break;
- case 'n':
- len = dirent->name_len & 0xFF;
- if (len > EXT2_NAME_LEN)
- len = EXT2_NAME_LEN;
- if (len > dirent->rec_len)
- len = dirent->rec_len;
- safe_print(dirent->name, len);
- break;
- case 'r':
- printf("%u", dirent->rec_len);
- break;
- case 'l':
- printf("%u", dirent->name_len & 0xFF);
- break;
- case 't':
- printf("%u", dirent->name_len >> 8);
- break;
- default:
- no_dirent:
- printf("%%D%c", ch);
- break;
- }
-}
-
-static void expand_percent_expression(ext2_filsys fs, char ch,
- struct problem_context *ctx)
-{
- if (!ctx)
- goto no_context;
-
- switch (ch) {
- case '%':
- fputc('%', stdout);
- break;
- case 'b':
- printf("%u", ctx->blk);
- break;
- case 'B':
- printf("%"PRIi64, ctx->blkcount);
- break;
- case 'c':
- printf("%u", ctx->blk2);
- break;
- case 'd':
- printf("%u", ctx->dir);
- break;
- case 'g':
- printf("%d", ctx->group);
- break;
- case 'i':
- printf("%u", ctx->ino);
- break;
- case 'j':
- printf("%u", ctx->ino2);
- break;
- case 'm':
- printf("%s", error_message(ctx->errcode));
- break;
- case 'N':
- printf("%"PRIi64, ctx->num);
- break;
- case 'p':
- print_pathname(fs, ctx->ino, 0);
- break;
- case 'P':
- print_pathname(fs, ctx->ino2,
- ctx->dirent ? ctx->dirent->inode : 0);
- break;
- case 'q':
- print_pathname(fs, ctx->dir, 0);
- break;
- case 'Q':
- print_pathname(fs, ctx->dir, ctx->ino);
- break;
- case 'S':
- printf("%d", get_backup_sb(NULL, fs, NULL, NULL));
- break;
- case 's':
- printf("%s", ctx->str ? ctx->str : "NULL");
- break;
- case 'X':
- printf("0x%"PRIi64, ctx->num);
- break;
- default:
- no_context:
- printf("%%%c", ch);
- break;
- }
-}
-
-
-static void print_e2fsck_message(e2fsck_t ctx, const char *msg,
- struct problem_context *pctx, int first)
-{
- ext2_filsys fs = ctx->fs;
- const char * cp;
- int i;
-
- e2fsck_clear_progbar(ctx);
- for (cp = msg; *cp; cp++) {
- if (cp[0] == '@') {
- cp++;
- expand_at_expression(ctx, *cp, pctx, &first);
- } else if (cp[0] == '%' && cp[1] == 'I') {
- cp += 2;
- expand_inode_expression(*cp, pctx);
- } else if (cp[0] == '%' && cp[1] == 'D') {
- cp += 2;
- expand_dirent_expression(*cp, pctx);
- } else if ((cp[0] == '%')) {
- cp++;
- expand_percent_expression(fs, *cp, pctx);
- } else {
- for (i=0; cp[i]; i++)
- if ((cp[i] == '@') || cp[i] == '%')
- break;
- printf("%.*s", i, cp);
- cp += i-1;
- }
- first = 0;
- }
-}
-
-
-/*
- * region.c --- code which manages allocations within a region.
- */
-
-struct region_el {
- region_addr_t start;
- region_addr_t end;
- struct region_el *next;
-};
-
-struct region_struct {
- region_addr_t min;
- region_addr_t max;
- struct region_el *allocated;
-};
-
-static region_t region_create(region_addr_t min, region_addr_t max)
-{
- region_t region;
-
- region = malloc(sizeof(struct region_struct));
- if (!region)
- return NULL;
- memset(region, 0, sizeof(struct region_struct));
- region->min = min;
- region->max = max;
- return region;
-}
-
-static void region_free(region_t region)
-{
- struct region_el *r, *next;
-
- for (r = region->allocated; r; r = next) {
- next = r->next;
- free(r);
- }
- memset(region, 0, sizeof(struct region_struct));
- free(region);
-}
-
-static int region_allocate(region_t region, region_addr_t start, int n)
-{
- struct region_el *r, *new_region, *prev, *next;
- region_addr_t end;
-
- end = start+n;
- if ((start < region->min) || (end > region->max))
- return -1;
- if (n == 0)
- return 1;
-
- /*
- * Search through the linked list. If we find that it
- * conflicts witih something that's already allocated, return
- * 1; if we can find an existing region which we can grow, do
- * so. Otherwise, stop when we find the appropriate place
- * insert a new region element into the linked list.
- */
- for (r = region->allocated, prev=NULL; r; prev = r, r = r->next) {
- if (((start >= r->start) && (start < r->end)) ||
- ((end > r->start) && (end <= r->end)) ||
- ((start <= r->start) && (end >= r->end)))
- return 1;
- if (end == r->start) {
- r->start = start;
- return 0;
- }
- if (start == r->end) {
- if ((next = r->next)) {
- if (end > next->start)
- return 1;
- if (end == next->start) {
- r->end = next->end;
- r->next = next->next;
- free(next);
- return 0;
- }
- }
- r->end = end;
- return 0;
- }
- if (start < r->start)
- break;
- }
- /*
- * Insert a new region element structure into the linked list
- */
- new_region = malloc(sizeof(struct region_el));
- if (!new_region)
- return -1;
- new_region->start = start;
- new_region->end = start + n;
- new_region->next = r;
- if (prev)
- prev->next = new_region;
- else
- region->allocated = new_region;
- return 0;
-}
-
-/*
- * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
- *
- * Pass 1 of e2fsck iterates over all the inodes in the filesystems,
- * and applies the following tests to each inode:
- *
- * - The mode field of the inode must be legal.
- * - The size and block count fields of the inode are correct.
- * - A data block must not be used by another inode
- *
- * Pass 1 also gathers the collects the following information:
- *
- * - A bitmap of which inodes are in use. (inode_used_map)
- * - A bitmap of which inodes are directories. (inode_dir_map)
- * - A bitmap of which inodes are regular files. (inode_reg_map)
- * - A bitmap of which inodes have bad fields. (inode_bad_map)
- * - A bitmap of which inodes are imagic inodes. (inode_imagic_map)
- * - A bitmap of which blocks are in use. (block_found_map)
- * - A bitmap of which blocks are in use by two inodes (block_dup_map)
- * - The data blocks of the directory inodes. (dir_map)
- *
- * Pass 1 is designed to stash away enough information so that the
- * other passes should not need to read in the inode information
- * during the normal course of a filesystem check. (Althogh if an
- * inconsistency is detected, other passes may need to read in an
- * inode to fix it.)
- *
- * Note that pass 1B will be invoked if there are any duplicate blocks
- * found.
- */
-
-
-static int process_block(ext2_filsys fs, blk_t *blocknr,
- e2_blkcnt_t blockcnt, blk_t ref_blk,
- int ref_offset, void *priv_data);
-static int process_bad_block(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt, blk_t ref_blk,
- int ref_offset, void *priv_data);
-static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
- char *block_buf);
-static void mark_table_blocks(e2fsck_t ctx);
-static void alloc_imagic_map(e2fsck_t ctx);
-static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
-static void handle_fs_bad_blocks(e2fsck_t ctx);
-static void process_inodes(e2fsck_t ctx, char *block_buf);
-static int process_inode_cmp(const void *a, const void *b);
-static errcode_t scan_callback(ext2_filsys fs,
- dgrp_t group, void * priv_data);
-static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
- char *block_buf, int adjust_sign);
-/* static char *describe_illegal_block(ext2_filsys fs, blk_t block); */
-
-static void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
- struct ext2_inode * inode, int bufsize,
- const char *proc);
-
-struct process_block_struct_1 {
- ext2_ino_t ino;
- unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
- fragmented:1, compressed:1, bbcheck:1;
- blk_t num_blocks;
- blk_t max_blocks;
- e2_blkcnt_t last_block;
- int num_illegal_blocks;
- blk_t previous_block;
- struct ext2_inode *inode;
- struct problem_context *pctx;
- ext2fs_block_bitmap fs_meta_blocks;
- e2fsck_t ctx;
-};
-
-struct process_inode_block {
- ext2_ino_t ino;
- struct ext2_inode inode;
-};
-
-struct scan_callback_struct {
- e2fsck_t ctx;
- char *block_buf;
-};
-
-/*
- * For the inodes to process list.
- */
-static struct process_inode_block *inodes_to_process;
-static int process_inode_count;
-
-static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
- EXT2_MIN_BLOCK_LOG_SIZE + 1];
-
-/*
- * Free all memory allocated by pass1 in preparation for restarting
- * things.
- */
-static void unwind_pass1(void)
-{
- ext2fs_free_mem(&inodes_to_process);
-}
-
-/*
- * Check to make sure a device inode is real. Returns 1 if the device
- * checks out, 0 if not.
- *
- * Note: this routine is now also used to check FIFO's and Sockets,
- * since they have the same requirement; the i_block fields should be
- * zero.
- */
-static int
-e2fsck_pass1_check_device_inode(ext2_filsys fs, struct ext2_inode *inode)
-{
- int i;
-
- /*
- * If i_blocks is non-zero, or the index flag is set, then
- * this is a bogus device/fifo/socket
- */
- if ((ext2fs_inode_data_blocks(fs, inode) != 0) ||
- (inode->i_flags & EXT2_INDEX_FL))
- return 0;
-
- /*
- * We should be able to do the test below all the time, but
- * because the kernel doesn't forcibly clear the device
- * inode's additional i_block fields, there are some rare
- * occasions when a legitimate device inode will have non-zero
- * additional i_block fields. So for now, we only complain
- * when the immutable flag is set, which should never happen
- * for devices. (And that's when the problem is caused, since
- * you can't set or clear immutable flags for devices.) Once
- * the kernel has been fixed we can change this...
- */
- if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
- for (i=4; i < EXT2_N_BLOCKS; i++)
- if (inode->i_block[i])
- return 0;
- }
- return 1;
-}
-
-/*
- * Check to make sure a symlink inode is real. Returns 1 if the symlink
- * checks out, 0 if not.
- */
-static int
-e2fsck_pass1_check_symlink(ext2_filsys fs, struct ext2_inode *inode, char *buf)
-{
- unsigned int len;
- int i;
- blk_t blocks;
-
- if ((inode->i_size_high || inode->i_size == 0) ||
- (inode->i_flags & EXT2_INDEX_FL))
- return 0;
-
- blocks = ext2fs_inode_data_blocks(fs, inode);
- if (blocks) {
- if ((inode->i_size >= fs->blocksize) ||
- (blocks != fs->blocksize >> 9) ||
- (inode->i_block[0] < fs->super->s_first_data_block) ||
- (inode->i_block[0] >= fs->super->s_blocks_count))
- return 0;
-
- for (i = 1; i < EXT2_N_BLOCKS; i++)
- if (inode->i_block[i])
- return 0;
-
- if (io_channel_read_blk(fs->io, inode->i_block[0], 1, buf))
- return 0;
-
- len = strnlen(buf, fs->blocksize);
- if (len == fs->blocksize)
- return 0;
- } else {
- if (inode->i_size >= sizeof(inode->i_block))
- return 0;
-
- len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
- if (len == sizeof(inode->i_block))
- return 0;
- }
- if (len != inode->i_size)
- return 0;
- return 1;
-}
-
-/*
- * If the immutable (or append-only) flag is set on the inode, offer
- * to clear it.
- */
-#define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
-static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
-{
- if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
- return;
-
- if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
- return;
-
- pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
- e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
-}
-
-/*
- * If device, fifo or socket, check size is zero -- if not offer to
- * clear it
- */
-static void check_size(e2fsck_t ctx, struct problem_context *pctx)
-{
- struct ext2_inode *inode = pctx->inode;
-
- if ((inode->i_size == 0) && (inode->i_size_high == 0))
- return;
-
- if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
- return;
-
- inode->i_size = 0;
- inode->i_size_high = 0;
- e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
-}
-
-static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- struct ext2_inode_large *inode;
- struct ext2_ext_attr_entry *entry;
- char *start, *end;
- int storage_size, remain, offs;
- int problem = 0;
-
- inode = (struct ext2_inode_large *) pctx->inode;
- storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
- inode->i_extra_isize;
- start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
- inode->i_extra_isize + sizeof(__u32);
- end = (char *) inode + EXT2_INODE_SIZE(ctx->fs->super);
- entry = (struct ext2_ext_attr_entry *) start;
-
- /* scan all entry's headers first */
-
- /* take finish entry 0UL into account */
- remain = storage_size - sizeof(__u32);
- offs = end - start;
-
- while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
-
- /* header eats this space */
- remain -= sizeof(struct ext2_ext_attr_entry);
-
- /* is attribute name valid? */
- if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
- pctx->num = entry->e_name_len;
- problem = PR_1_ATTR_NAME_LEN;
- goto fix;
- }
-
- /* attribute len eats this space */
- remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
-
- /* check value size */
- if (entry->e_value_size == 0 || entry->e_value_size > remain) {
- pctx->num = entry->e_value_size;
- problem = PR_1_ATTR_VALUE_SIZE;
- goto fix;
- }
-
- /* check value placement */
- if (entry->e_value_offs +
- EXT2_XATTR_SIZE(entry->e_value_size) != offs) {
- printf("(entry->e_value_offs + entry->e_value_size: %d, offs: %d)\n", entry->e_value_offs + entry->e_value_size, offs);
- pctx->num = entry->e_value_offs;
- problem = PR_1_ATTR_VALUE_OFFSET;
- goto fix;
- }
-
- /* e_value_block must be 0 in inode's ea */
- if (entry->e_value_block != 0) {
- pctx->num = entry->e_value_block;
- problem = PR_1_ATTR_VALUE_BLOCK;
- goto fix;
- }
-
- /* e_hash must be 0 in inode's ea */
- if (entry->e_hash != 0) {
- pctx->num = entry->e_hash;
- problem = PR_1_ATTR_HASH;
- goto fix;
- }
-
- remain -= entry->e_value_size;
- offs -= EXT2_XATTR_SIZE(entry->e_value_size);
-
- entry = EXT2_EXT_ATTR_NEXT(entry);
- }
-fix:
- /*
- * it seems like a corruption. it's very unlikely we could repair
- * EA(s) in automatic fashion -bzzz
- */
- if (problem == 0 || !fix_problem(ctx, problem, pctx))
- return;
-
- /* simple remove all possible EA(s) */
- *((__u32 *)start) = 0UL;
- e2fsck_write_inode_full(ctx, pctx->ino, (struct ext2_inode *)inode,
- EXT2_INODE_SIZE(sb), "pass1");
-}
-
-static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- struct ext2_inode_large *inode;
- __u32 *eamagic;
- int min, max;
-
- inode = (struct ext2_inode_large *) pctx->inode;
- if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
- /* this isn't large inode. so, nothing to check */
- return;
- }
-
- /* i_extra_isize must cover i_extra_isize + i_pad1 at least */
- min = sizeof(inode->i_extra_isize) + sizeof(inode->i_pad1);
- max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
- /*
- * For now we will allow i_extra_isize to be 0, but really
- * implementations should never allow i_extra_isize to be 0
- */
- if (inode->i_extra_isize &&
- (inode->i_extra_isize < min || inode->i_extra_isize > max)) {
- if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
- return;
- inode->i_extra_isize = min;
- e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
- EXT2_INODE_SIZE(sb), "pass1");
- return;
- }
-
- eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
- inode->i_extra_isize);
- if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
- /* it seems inode has an extended attribute(s) in body */
- check_ea_in_inode(ctx, pctx);
- }
-}
-
-static void e2fsck_pass1(e2fsck_t ctx)
-{
- int i;
- __u64 max_sizes;
- ext2_filsys fs = ctx->fs;
- ext2_ino_t ino;
- struct ext2_inode *inode;
- ext2_inode_scan scan;
- char *block_buf;
- unsigned char frag, fsize;
- struct problem_context pctx;
- struct scan_callback_struct scan_struct;
- struct ext2_super_block *sb = ctx->fs->super;
- int imagic_fs;
- int busted_fs_time = 0;
- int inode_size;
-
- clear_problem_context(&pctx);
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
-
- if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
- !(ctx->options & E2F_OPT_NO)) {
- if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
- ctx->dirs_to_hash = 0;
- }
-
- /* Pass 1 */
-
-#define EXT2_BPP(bits) (1ULL << ((bits) - 2))
-
- for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
- max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
- max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
- max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
- max_sizes = (max_sizes * (1UL << i)) - 1;
- ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
- }
-#undef EXT2_BPP
-
- imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
-
- /*
- * Allocate bitmaps structures
- */
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("in-use inode map"),
- &ctx->inode_used_map);
- if (pctx.errcode) {
- pctx.num = 1;
- fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
- _("directory inode map"), &ctx->inode_dir_map);
- if (pctx.errcode) {
- pctx.num = 2;
- fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
- _("regular file inode map"), &ctx->inode_reg_map);
- if (pctx.errcode) {
- pctx.num = 6;
- fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- pctx.errcode = ext2fs_allocate_block_bitmap(fs, _("in-use block map"),
- &ctx->block_found_map);
- if (pctx.errcode) {
- pctx.num = 1;
- fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0,
- &ctx->inode_link_info);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- inode_size = EXT2_INODE_SIZE(fs->super);
- inode = (struct ext2_inode *)
- e2fsck_allocate_memory(ctx, inode_size, "scratch inode");
-
- inodes_to_process = (struct process_inode_block *)
- e2fsck_allocate_memory(ctx,
- (ctx->process_inode_size *
- sizeof(struct process_inode_block)),
- "array of inodes to process");
- process_inode_count = 0;
-
- pctx.errcode = ext2fs_init_dblist(fs, 0);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- /*
- * If the last orphan field is set, clear it, since the pass1
- * processing will automatically find and clear the orphans.
- * In the future, we may want to try using the last_orphan
- * linked list ourselves, but for now, we clear it so that the
- * ext3 mount code won't get confused.
- */
- if (!(ctx->options & E2F_OPT_READONLY)) {
- if (fs->super->s_last_orphan) {
- fs->super->s_last_orphan = 0;
- ext2fs_mark_super_dirty(fs);
- }
- }
-
- mark_table_blocks(ctx);
- block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
- "block interate buffer");
- e2fsck_use_inode_shortcuts(ctx, 1);
- ehandler_operation(_("doing inode scan"));
- pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
- &scan);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 0);
- ctx->stashed_inode = inode;
- scan_struct.ctx = ctx;
- scan_struct.block_buf = block_buf;
- ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
- if (ctx->progress)
- if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count))
- return;
- if ((fs->super->s_wtime < fs->super->s_inodes_count) ||
- (fs->super->s_mtime < fs->super->s_inodes_count))
- busted_fs_time = 1;
-
- while (1) {
- pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
- inode, inode_size);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
- continue;
- }
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if (!ino)
- break;
- pctx.ino = ino;
- pctx.inode = inode;
- ctx->stashed_ino = ino;
- if (inode->i_links_count) {
- pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
- ino, inode->i_links_count);
- if (pctx.errcode) {
- pctx.num = inode->i_links_count;
- fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- }
- if (ino == EXT2_BAD_INO) {
- struct process_block_struct_1 pb;
-
- pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
- &pb.fs_meta_blocks);
- if (pctx.errcode) {
- pctx.num = 4;
- fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- pb.ino = EXT2_BAD_INO;
- pb.num_blocks = pb.last_block = 0;
- pb.num_illegal_blocks = 0;
- pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
- pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
- pb.inode = inode;
- pb.pctx = &pctx;
- pb.ctx = ctx;
- pctx.errcode = ext2fs_block_iterate2(fs, ino, 0,
- block_buf, process_bad_block, &pb);
- ext2fs_free_block_bitmap(pb.fs_meta_blocks);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if (pb.bbcheck)
- if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
- clear_problem_context(&pctx);
- continue;
- } else if (ino == EXT2_ROOT_INO) {
- /*
- * Make sure the root inode is a directory; if
- * not, offer to clear it. It will be
- * regnerated in pass #3.
- */
- if (!LINUX_S_ISDIR(inode->i_mode)) {
- if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx)) {
- inode->i_dtime = time(0);
- inode->i_links_count = 0;
- ext2fs_icount_store(ctx->inode_link_info,
- ino, 0);
- e2fsck_write_inode(ctx, ino, inode,
- "pass1");
- }
-
- }
- /*
- * If dtime is set, offer to clear it. mke2fs
- * version 0.2b created filesystems with the
- * dtime field set for the root and lost+found
- * directories. We won't worry about
- * /lost+found, since that can be regenerated
- * easily. But we will fix the root directory
- * as a special case.
- */
- if (inode->i_dtime && inode->i_links_count) {
- if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
- inode->i_dtime = 0;
- e2fsck_write_inode(ctx, ino, inode,
- "pass1");
- }
- }
- } else if (ino == EXT2_JOURNAL_INO) {
- ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
- if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
- if (!LINUX_S_ISREG(inode->i_mode) &&
- fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
- &pctx)) {
- inode->i_mode = LINUX_S_IFREG;
- e2fsck_write_inode(ctx, ino, inode,
- "pass1");
- }
- check_blocks(ctx, &pctx, block_buf);
- continue;
- }
- if ((inode->i_links_count || inode->i_blocks ||
- inode->i_blocks || inode->i_block[0]) &&
- fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
- &pctx)) {
- memset(inode, 0, inode_size);
- ext2fs_icount_store(ctx->inode_link_info,
- ino, 0);
- e2fsck_write_inode_full(ctx, ino, inode,
- inode_size, "pass1");
- }
- } else if (ino < EXT2_FIRST_INODE(fs->super)) {
- int problem = 0;
-
- ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
- if (ino == EXT2_BOOT_LOADER_INO) {
- if (LINUX_S_ISDIR(inode->i_mode))
- problem = PR_1_RESERVED_BAD_MODE;
- } else if (ino == EXT2_RESIZE_INO) {
- if (inode->i_mode &&
- !LINUX_S_ISREG(inode->i_mode))
- problem = PR_1_RESERVED_BAD_MODE;
- } else {
- if (inode->i_mode != 0)
- problem = PR_1_RESERVED_BAD_MODE;
- }
- if (problem) {
- if (fix_problem(ctx, problem, &pctx)) {
- inode->i_mode = 0;
- e2fsck_write_inode(ctx, ino, inode,
- "pass1");
- }
- }
- check_blocks(ctx, &pctx, block_buf);
- continue;
- }
- /*
- * Check for inodes who might have been part of the
- * orphaned list linked list. They should have gotten
- * dealt with by now, unless the list had somehow been
- * corrupted.
- *
- * FIXME: In the future, inodes which are still in use
- * (and which are therefore) pending truncation should
- * be handled specially. Right now we just clear the
- * dtime field, and the normal e2fsck handling of
- * inodes where i_size and the inode blocks are
- * inconsistent is to fix i_size, instead of releasing
- * the extra blocks. This won't catch the inodes that
- * was at the end of the orphan list, but it's better
- * than nothing. The right answer is that there
- * shouldn't be any bugs in the orphan list handling. :-)
- */
- if (inode->i_dtime && !busted_fs_time &&
- inode->i_dtime < ctx->fs->super->s_inodes_count) {
- if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
- inode->i_dtime = inode->i_links_count ?
- 0 : time(0);
- e2fsck_write_inode(ctx, ino, inode,
- "pass1");
- }
- }
-
- /*
- * This code assumes that deleted inodes have
- * i_links_count set to 0.
- */
- if (!inode->i_links_count) {
- if (!inode->i_dtime && inode->i_mode) {
- if (fix_problem(ctx,
- PR_1_ZERO_DTIME, &pctx)) {
- inode->i_dtime = time(0);
- e2fsck_write_inode(ctx, ino, inode,
- "pass1");
- }
- }
- continue;
- }
- /*
- * n.b. 0.3c ext2fs code didn't clear i_links_count for
- * deleted files. Oops.
- *
- * Since all new ext2 implementations get this right,
- * we now assume that the case of non-zero
- * i_links_count and non-zero dtime means that we
- * should keep the file, not delete it.
- *
- */
- if (inode->i_dtime) {
- if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
- inode->i_dtime = 0;
- e2fsck_write_inode(ctx, ino, inode, "pass1");
- }
- }
-
- ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
- switch (fs->super->s_creator_os) {
- case EXT2_OS_LINUX:
- frag = inode->osd2.linux2.l_i_frag;
- fsize = inode->osd2.linux2.l_i_fsize;
- break;
- case EXT2_OS_HURD:
- frag = inode->osd2.hurd2.h_i_frag;
- fsize = inode->osd2.hurd2.h_i_fsize;
- break;
- case EXT2_OS_MASIX:
- frag = inode->osd2.masix2.m_i_frag;
- fsize = inode->osd2.masix2.m_i_fsize;
- break;
- default:
- frag = fsize = 0;
- }
-
- if (inode->i_faddr || frag || fsize ||
- (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
- mark_inode_bad(ctx, ino);
- if (inode->i_flags & EXT2_IMAGIC_FL) {
- if (imagic_fs) {
- if (!ctx->inode_imagic_map)
- alloc_imagic_map(ctx);
- ext2fs_mark_inode_bitmap(ctx->inode_imagic_map,
- ino);
- } else {
- if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
- inode->i_flags &= ~EXT2_IMAGIC_FL;
- e2fsck_write_inode(ctx, ino,
- inode, "pass1");
- }
- }
- }
-
- check_inode_extra_space(ctx, &pctx);
-
- if (LINUX_S_ISDIR(inode->i_mode)) {
- ext2fs_mark_inode_bitmap(ctx->inode_dir_map, ino);
- e2fsck_add_dir_info(ctx, ino, 0);
- ctx->fs_directory_count++;
- } else if (LINUX_S_ISREG (inode->i_mode)) {
- ext2fs_mark_inode_bitmap(ctx->inode_reg_map, ino);
- ctx->fs_regular_count++;
- } else if (LINUX_S_ISCHR (inode->i_mode) &&
- e2fsck_pass1_check_device_inode(fs, inode)) {
- check_immutable(ctx, &pctx);
- check_size(ctx, &pctx);
- ctx->fs_chardev_count++;
- } else if (LINUX_S_ISBLK (inode->i_mode) &&
- e2fsck_pass1_check_device_inode(fs, inode)) {
- check_immutable(ctx, &pctx);
- check_size(ctx, &pctx);
- ctx->fs_blockdev_count++;
- } else if (LINUX_S_ISLNK (inode->i_mode) &&
- e2fsck_pass1_check_symlink(fs, inode, block_buf)) {
- check_immutable(ctx, &pctx);
- ctx->fs_symlinks_count++;
- if (ext2fs_inode_data_blocks(fs, inode) == 0) {
- ctx->fs_fast_symlinks_count++;
- check_blocks(ctx, &pctx, block_buf);
- continue;
- }
- }
- else if (LINUX_S_ISFIFO (inode->i_mode) &&
- e2fsck_pass1_check_device_inode(fs, inode)) {
- check_immutable(ctx, &pctx);
- check_size(ctx, &pctx);
- ctx->fs_fifo_count++;
- } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
- e2fsck_pass1_check_device_inode(fs, inode)) {
- check_immutable(ctx, &pctx);
- check_size(ctx, &pctx);
- ctx->fs_sockets_count++;
- } else
- mark_inode_bad(ctx, ino);
- if (inode->i_block[EXT2_IND_BLOCK])
- ctx->fs_ind_count++;
- if (inode->i_block[EXT2_DIND_BLOCK])
- ctx->fs_dind_count++;
- if (inode->i_block[EXT2_TIND_BLOCK])
- ctx->fs_tind_count++;
- if (inode->i_block[EXT2_IND_BLOCK] ||
- inode->i_block[EXT2_DIND_BLOCK] ||
- inode->i_block[EXT2_TIND_BLOCK] ||
- inode->i_file_acl) {
- inodes_to_process[process_inode_count].ino = ino;
- inodes_to_process[process_inode_count].inode = *inode;
- process_inode_count++;
- } else
- check_blocks(ctx, &pctx, block_buf);
-
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
-
- if (process_inode_count >= ctx->process_inode_size) {
- process_inodes(ctx, block_buf);
-
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- }
- }
- process_inodes(ctx, block_buf);
- ext2fs_close_inode_scan(scan);
- ehandler_operation(0);
-
- /*
- * If any extended attribute blocks' reference counts need to
- * be adjusted, either up (ctx->refcount_extra), or down
- * (ctx->refcount), then fix them.
- */
- if (ctx->refcount) {
- adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
- ea_refcount_free(ctx->refcount);
- ctx->refcount = 0;
- }
- if (ctx->refcount_extra) {
- adjust_extattr_refcount(ctx, ctx->refcount_extra,
- block_buf, +1);
- ea_refcount_free(ctx->refcount_extra);
- ctx->refcount_extra = 0;
- }
-
- if (ctx->invalid_bitmaps)
- handle_fs_bad_blocks(ctx);
-
- /* We don't need the block_ea_map any more */
- ext2fs_free_block_bitmap(ctx->block_ea_map);
- ctx->block_ea_map = 0;
-
- if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
- ext2fs_block_bitmap save_bmap;
-
- save_bmap = fs->block_map;
- fs->block_map = ctx->block_found_map;
- clear_problem_context(&pctx);
- pctx.errcode = ext2fs_create_resize_inode(fs);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_RESIZE_INODE_CREATE, &pctx);
- /* Should never get here */
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
- "recreate inode");
- inode->i_mtime = time(0);
- e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
- "recreate inode");
- fs->block_map = save_bmap;
- ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
- }
-
- if (ctx->flags & E2F_FLAG_RESTART) {
- /*
- * Only the master copy of the superblock and block
- * group descriptors are going to be written during a
- * restart, so set the superblock to be used to be the
- * master superblock.
- */
- ctx->use_superblock = 0;
- unwind_pass1();
- goto endit;
- }
-
- if (ctx->block_dup_map) {
- if (ctx->options & E2F_OPT_PREEN) {
- clear_problem_context(&pctx);
- fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
- }
- e2fsck_pass1_dupblocks(ctx, block_buf);
- }
- ext2fs_free_mem(&inodes_to_process);
-endit:
- e2fsck_use_inode_shortcuts(ctx, 0);
-
- ext2fs_free_mem(&block_buf);
- ext2fs_free_mem(&inode);
-
-}
-
-/*
- * When the inode_scan routines call this callback at the end of the
- * glock group, call process_inodes.
- */
-static errcode_t scan_callback(ext2_filsys fs,
- dgrp_t group, void * priv_data)
-{
- struct scan_callback_struct *scan_struct;
- e2fsck_t ctx;
-
- scan_struct = (struct scan_callback_struct *) priv_data;
- ctx = scan_struct->ctx;
-
- process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
-
- if (ctx->progress)
- if ((ctx->progress)(ctx, 1, group+1,
- ctx->fs->group_desc_count))
- return EXT2_ET_CANCEL_REQUESTED;
-
- return 0;
-}
-
-/*
- * Process the inodes in the "inodes to process" list.
- */
-static void process_inodes(e2fsck_t ctx, char *block_buf)
-{
- int i;
- struct ext2_inode *old_stashed_inode;
- ext2_ino_t old_stashed_ino;
- const char *old_operation;
- char buf[80];
- struct problem_context pctx;
-
- /* begin process_inodes */
- if (process_inode_count == 0)
- return;
- old_operation = ehandler_operation(0);
- old_stashed_inode = ctx->stashed_inode;
- old_stashed_ino = ctx->stashed_ino;
- qsort(inodes_to_process, process_inode_count,
- sizeof(struct process_inode_block), process_inode_cmp);
- clear_problem_context(&pctx);
- for (i=0; i < process_inode_count; i++) {
- pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode;
- pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
- sprintf(buf, _("reading indirect blocks of inode %u"),
- pctx.ino);
- ehandler_operation(buf);
- check_blocks(ctx, &pctx, block_buf);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- break;
- }
- ctx->stashed_inode = old_stashed_inode;
- ctx->stashed_ino = old_stashed_ino;
- process_inode_count = 0;
- /* end process inodes */
-
- ehandler_operation(old_operation);
-}
-
-static int process_inode_cmp(const void *a, const void *b)
-{
- const struct process_inode_block *ib_a =
- (const struct process_inode_block *) a;
- const struct process_inode_block *ib_b =
- (const struct process_inode_block *) b;
- int ret;
-
- ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
- ib_b->inode.i_block[EXT2_IND_BLOCK]);
- if (ret == 0)
- ret = ib_a->inode.i_file_acl - ib_b->inode.i_file_acl;
- return ret;
-}
-
-/*
- * Mark an inode as being bad in some what
- */
-static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
-{
- struct problem_context pctx;
-
- if (!ctx->inode_bad_map) {
- clear_problem_context(&pctx);
-
- pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
- _("bad inode map"), &ctx->inode_bad_map);
- if (pctx.errcode) {
- pctx.num = 3;
- fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
- /* Should never get here */
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- }
- ext2fs_mark_inode_bitmap(ctx->inode_bad_map, ino);
-}
-
-
-/*
- * This procedure will allocate the inode imagic table
- */
-static void alloc_imagic_map(e2fsck_t ctx)
-{
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
- pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
- _("imagic inode map"),
- &ctx->inode_imagic_map);
- if (pctx.errcode) {
- pctx.num = 5;
- fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
- /* Should never get here */
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-}
-
-/*
- * Marks a block as in use, setting the dup_map if it's been set
- * already. Called by process_block and process_bad_block.
- *
- * WARNING: Assumes checks have already been done to make sure block
- * is valid. This is true in both process_block and process_bad_block.
- */
-static void mark_block_used(e2fsck_t ctx, blk_t block)
-{
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- if (ext2fs_fast_test_block_bitmap(ctx->block_found_map, block)) {
- if (!ctx->block_dup_map) {
- pctx.errcode = ext2fs_allocate_block_bitmap(ctx->fs,
- _("multiply claimed block map"),
- &ctx->block_dup_map);
- if (pctx.errcode) {
- pctx.num = 3;
- fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
- &pctx);
- /* Should never get here */
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- }
- ext2fs_fast_mark_block_bitmap(ctx->block_dup_map, block);
- } else {
- ext2fs_fast_mark_block_bitmap(ctx->block_found_map, block);
- }
-}
-
-/*
- * Adjust the extended attribute block's reference counts at the end
- * of pass 1, either by subtracting out references for EA blocks that
- * are still referenced in ctx->refcount, or by adding references for
- * EA blocks that had extra references as accounted for in
- * ctx->refcount_extra.
- */
-static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
- char *block_buf, int adjust_sign)
-{
- struct ext2_ext_attr_header *header;
- struct problem_context pctx;
- ext2_filsys fs = ctx->fs;
- blk_t blk;
- __u32 should_be;
- int count;
-
- clear_problem_context(&pctx);
-
- ea_refcount_intr_begin(refcount);
- while (1) {
- if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
- break;
- pctx.blk = blk;
- pctx.errcode = ext2fs_read_ext_attr(fs, blk, block_buf);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
- return;
- }
- header = (struct ext2_ext_attr_header *) block_buf;
- pctx.blkcount = header->h_refcount;
- should_be = header->h_refcount + adjust_sign * count;
- pctx.num = should_be;
- if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
- header->h_refcount = should_be;
- pctx.errcode = ext2fs_write_ext_attr(fs, blk,
- block_buf);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1_EXTATTR_WRITE, &pctx);
- continue;
- }
- }
- }
-}
-
-/*
- * Handle processing the extended attribute blocks
- */
-static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
- char *block_buf)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t ino = pctx->ino;
- struct ext2_inode *inode = pctx->inode;
- blk_t blk;
- char * end;
- struct ext2_ext_attr_header *header;
- struct ext2_ext_attr_entry *entry;
- int count;
- region_t region;
-
- blk = inode->i_file_acl;
- if (blk == 0)
- return 0;
-
- /*
- * If the Extended attribute flag isn't set, then a non-zero
- * file acl means that the inode is corrupted.
- *
- * Or if the extended attribute block is an invalid block,
- * then the inode is also corrupted.
- */
- if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
- (blk < fs->super->s_first_data_block) ||
- (blk >= fs->super->s_blocks_count)) {
- mark_inode_bad(ctx, ino);
- return 0;
- }
-
- /* If ea bitmap hasn't been allocated, create it */
- if (!ctx->block_ea_map) {
- pctx->errcode = ext2fs_allocate_block_bitmap(fs,
- _("ext attr block map"),
- &ctx->block_ea_map);
- if (pctx->errcode) {
- pctx->num = 2;
- fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return 0;
- }
- }
-
- /* Create the EA refcount structure if necessary */
- if (!ctx->refcount) {
- pctx->errcode = ea_refcount_create(0, &ctx->refcount);
- if (pctx->errcode) {
- pctx->num = 1;
- fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return 0;
- }
- }
-
- /* Have we seen this EA block before? */
- if (ext2fs_fast_test_block_bitmap(ctx->block_ea_map, blk)) {
- if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
- return 1;
- /* Ooops, this EA was referenced more than it stated */
- if (!ctx->refcount_extra) {
- pctx->errcode = ea_refcount_create(0,
- &ctx->refcount_extra);
- if (pctx->errcode) {
- pctx->num = 2;
- fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return 0;
- }
- }
- ea_refcount_increment(ctx->refcount_extra, blk, 0);
- return 1;
- }
-
- /*
- * OK, we haven't seen this EA block yet. So we need to
- * validate it
- */
- pctx->blk = blk;
- pctx->errcode = ext2fs_read_ext_attr(fs, blk, block_buf);
- if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
- goto clear_extattr;
- header = (struct ext2_ext_attr_header *) block_buf;
- pctx->blk = inode->i_file_acl;
- if (((ctx->ext_attr_ver == 1) &&
- (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
- ((ctx->ext_attr_ver == 2) &&
- (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
- if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
- goto clear_extattr;
- }
-
- if (header->h_blocks != 1) {
- if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
- goto clear_extattr;
- }
-
- region = region_create(0, fs->blocksize);
- if (!region) {
- fix_problem(ctx, PR_1_EA_ALLOC_REGION, pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return 0;
- }
- if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
- if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
- goto clear_extattr;
- }
-
- entry = (struct ext2_ext_attr_entry *)(header+1);
- end = block_buf + fs->blocksize;
- while ((char *)entry < end && *(__u32 *)entry) {
- if (region_allocate(region, (char *)entry - (char *)header,
- EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
- if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
- goto clear_extattr;
- }
- if ((ctx->ext_attr_ver == 1 &&
- (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
- (ctx->ext_attr_ver == 2 &&
- entry->e_name_index == 0)) {
- if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
- goto clear_extattr;
- }
- if (entry->e_value_block != 0) {
- if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
- goto clear_extattr;
- }
- if (entry->e_value_size &&
- region_allocate(region, entry->e_value_offs,
- EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
- if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
- goto clear_extattr;
- }
- entry = EXT2_EXT_ATTR_NEXT(entry);
- }
- if (region_allocate(region, (char *)entry - (char *)header, 4)) {
- if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
- goto clear_extattr;
- }
- region_free(region);
-
- count = header->h_refcount - 1;
- if (count)
- ea_refcount_store(ctx->refcount, blk, count);
- mark_block_used(ctx, blk);
- ext2fs_fast_mark_block_bitmap(ctx->block_ea_map, blk);
-
- return 1;
-
-clear_extattr:
- inode->i_file_acl = 0;
- e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
- return 0;
-}
-
-/* Returns 1 if bad htree, 0 if OK */
-static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
- ext2_ino_t ino FSCK_ATTR((unused)),
- struct ext2_inode *inode,
- char *block_buf)
-{
- struct ext2_dx_root_info *root;
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- blk_t blk;
-
- if ((!LINUX_S_ISDIR(inode->i_mode) &&
- fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
- (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
- fix_problem(ctx, PR_1_HTREE_SET, pctx)))
- return 1;
-
- blk = inode->i_block[0];
- if (((blk == 0) ||
- (blk < fs->super->s_first_data_block) ||
- (blk >= fs->super->s_blocks_count)) &&
- fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
- return 1;
-
- retval = io_channel_read_blk(fs->io, blk, 1, block_buf);
- if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
- return 1;
-
- /* XXX should check that beginning matches a directory */
- root = (struct ext2_dx_root_info *) (block_buf + 24);
-
- if ((root->reserved_zero || root->info_length < 8) &&
- fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
- return 1;
-
- pctx->num = root->hash_version;
- if ((root->hash_version != EXT2_HASH_LEGACY) &&
- (root->hash_version != EXT2_HASH_HALF_MD4) &&
- (root->hash_version != EXT2_HASH_TEA) &&
- fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
- return 1;
-
- if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
- fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
- return 1;
-
- pctx->num = root->indirect_levels;
- if ((root->indirect_levels > 1) &&
- fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
- return 1;
-
- return 0;
-}
-
-/*
- * This subroutine is called on each inode to account for all of the
- * blocks used by that inode.
- */
-static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
- char *block_buf)
-{
- ext2_filsys fs = ctx->fs;
- struct process_block_struct_1 pb;
- ext2_ino_t ino = pctx->ino;
- struct ext2_inode *inode = pctx->inode;
- int bad_size = 0;
- int dirty_inode = 0;
- __u64 size;
-
- pb.ino = ino;
- pb.num_blocks = 0;
- pb.last_block = -1;
- pb.num_illegal_blocks = 0;
- pb.suppress = 0; pb.clear = 0;
- pb.fragmented = 0;
- pb.compressed = 0;
- pb.previous_block = 0;
- pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
- pb.is_reg = LINUX_S_ISREG(inode->i_mode);
- pb.max_blocks = 1 << (31 - fs->super->s_log_block_size);
- pb.inode = inode;
- pb.pctx = pctx;
- pb.ctx = ctx;
- pctx->ino = ino;
- pctx->errcode = 0;
-
- if (inode->i_flags & EXT2_COMPRBLK_FL) {
- if (fs->super->s_feature_incompat &
- EXT2_FEATURE_INCOMPAT_COMPRESSION)
- pb.compressed = 1;
- else {
- if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) {
- inode->i_flags &= ~EXT2_COMPRBLK_FL;
- dirty_inode++;
- }
- }
- }
-
- if (inode->i_file_acl && check_ext_attr(ctx, pctx, block_buf))
- pb.num_blocks++;
-
- if (ext2fs_inode_has_valid_blocks(inode))
- pctx->errcode = ext2fs_block_iterate2(fs, ino,
- pb.is_dir ? BLOCK_FLAG_HOLE : 0,
- block_buf, process_block, &pb);
- end_problem_latch(ctx, PR_LATCH_BLOCK);
- end_problem_latch(ctx, PR_LATCH_TOOBIG);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- goto out;
- if (pctx->errcode)
- fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
-
- if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group)
- ctx->fs_fragmented++;
-
- if (pb.clear) {
- inode->i_links_count = 0;
- ext2fs_icount_store(ctx->inode_link_info, ino, 0);
- inode->i_dtime = time(0);
- dirty_inode++;
- ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
- ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
- ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
- /*
- * The inode was probably partially accounted for
- * before processing was aborted, so we need to
- * restart the pass 1 scan.
- */
- ctx->flags |= E2F_FLAG_RESTART;
- goto out;
- }
-
- if (inode->i_flags & EXT2_INDEX_FL) {
- if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
- inode->i_flags &= ~EXT2_INDEX_FL;
- dirty_inode++;
- } else {
-#ifdef ENABLE_HTREE
- e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
-#endif
- }
- }
- if (ctx->dirs_to_hash && pb.is_dir &&
- !(inode->i_flags & EXT2_INDEX_FL) &&
- ((inode->i_size / fs->blocksize) >= 3))
- ext2fs_u32_list_add(ctx->dirs_to_hash, ino);
-
- if (!pb.num_blocks && pb.is_dir) {
- if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
- inode->i_links_count = 0;
- ext2fs_icount_store(ctx->inode_link_info, ino, 0);
- inode->i_dtime = time(0);
- dirty_inode++;
- ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
- ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
- ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
- ctx->fs_directory_count--;
- goto out;
- }
- }
-
- pb.num_blocks *= (fs->blocksize / 512);
-
- if (pb.is_dir) {
- int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
- if (nblock > (pb.last_block + 1))
- bad_size = 1;
- else if (nblock < (pb.last_block + 1)) {
- if (((pb.last_block + 1) - nblock) >
- fs->super->s_prealloc_dir_blocks)
- bad_size = 2;
- }
- } else {
- size = EXT2_I_SIZE(inode);
- if ((pb.last_block >= 0) &&
- (size < (__u64) pb.last_block * fs->blocksize))
- bad_size = 3;
- else if (size > ext2_max_sizes[fs->super->s_log_block_size])
- bad_size = 4;
- }
- /* i_size for symlinks is checked elsewhere */
- if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
- pctx->num = (pb.last_block+1) * fs->blocksize;
- if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
- inode->i_size = pctx->num;
- if (!LINUX_S_ISDIR(inode->i_mode))
- inode->i_size_high = pctx->num >> 32;
- dirty_inode++;
- }
- pctx->num = 0;
- }
- if (LINUX_S_ISREG(inode->i_mode) &&
- (inode->i_size_high || inode->i_size & 0x80000000UL))
- ctx->large_files++;
- if (pb.num_blocks != inode->i_blocks) {
- pctx->num = pb.num_blocks;
- if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
- inode->i_blocks = pb.num_blocks;
- dirty_inode++;
- }
- pctx->num = 0;
- }
-out:
- if (dirty_inode)
- e2fsck_write_inode(ctx, ino, inode, "check_blocks");
-}
-
-
-/*
- * This is a helper function for check_blocks().
- */
-static int process_block(ext2_filsys fs,
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct process_block_struct_1 *p;
- struct problem_context *pctx;
- blk_t blk = *block_nr;
- int ret_code = 0;
- int problem = 0;
- e2fsck_t ctx;
-
- p = (struct process_block_struct_1 *) priv_data;
- pctx = p->pctx;
- ctx = p->ctx;
-
- if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) {
- /* todo: Check that the comprblk_fl is high, that the
- blkaddr pattern looks right (all non-holes up to
- first EXT2FS_COMPRESSED_BLKADDR, then all
- EXT2FS_COMPRESSED_BLKADDR up to end of cluster),
- that the feature_incompat bit is high, and that the
- inode is a regular file. If we're doing a "full
- check" (a concept introduced to e2fsck by e2compr,
- meaning that we look at data blocks as well as
- metadata) then call some library routine that
- checks the compressed data. I'll have to think
- about this, because one particularly important
- problem to be able to fix is to recalculate the
- cluster size if necessary. I think that perhaps
- we'd better do most/all e2compr-specific checks
- separately, after the non-e2compr checks. If not
- doing a full check, it may be useful to test that
- the personality is linux; e.g. if it isn't then
- perhaps this really is just an illegal block. */
- return 0;
- }
-
- if (blk == 0) {
- if (p->is_dir == 0) {
- /*
- * Should never happen, since only directories
- * get called with BLOCK_FLAG_HOLE
- */
-#ifdef DEBUG_E2FSCK
- printf("process_block() called with blk == 0, "
- "blockcnt=%d, inode %lu???\n",
- blockcnt, p->ino);
-#endif
- return 0;
- }
- if (blockcnt < 0)
- return 0;
- if (blockcnt * fs->blocksize < p->inode->i_size) {
- goto mark_dir;
- }
- return 0;
- }
-
- /*
- * Simplistic fragmentation check. We merely require that the
- * file be contiguous. (Which can never be true for really
- * big files that are greater than a block group.)
- */
- if (!HOLE_BLKADDR(p->previous_block)) {
- if (p->previous_block+1 != blk)
- p->fragmented = 1;
- }
- p->previous_block = blk;
-
- if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
- problem = PR_1_TOOBIG_DIR;
- if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
- problem = PR_1_TOOBIG_REG;
- if (!p->is_dir && !p->is_reg && blockcnt > 0)
- problem = PR_1_TOOBIG_SYMLINK;
-
- if (blk < fs->super->s_first_data_block ||
- blk >= fs->super->s_blocks_count)
- problem = PR_1_ILLEGAL_BLOCK_NUM;
-
- if (problem) {
- p->num_illegal_blocks++;
- if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
- if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
- p->clear = 1;
- return BLOCK_ABORT;
- }
- if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
- p->suppress = 1;
- set_latch_flags(PR_LATCH_BLOCK,
- PRL_SUPPRESS, 0);
- }
- }
- pctx->blk = blk;
- pctx->blkcount = blockcnt;
- if (fix_problem(ctx, problem, pctx)) {
- blk = *block_nr = 0;
- ret_code = BLOCK_CHANGED;
- goto mark_dir;
- } else
- return 0;
- }
-
- if (p->ino == EXT2_RESIZE_INO) {
- /*
- * The resize inode has already be sanity checked
- * during pass #0 (the superblock checks). All we
- * have to do is mark the double indirect block as
- * being in use; all of the other blocks are handled
- * by mark_table_blocks()).
- */
- if (blockcnt == BLOCK_COUNT_DIND)
- mark_block_used(ctx, blk);
- } else
- mark_block_used(ctx, blk);
- p->num_blocks++;
- if (blockcnt >= 0)
- p->last_block = blockcnt;
-mark_dir:
- if (p->is_dir && (blockcnt >= 0)) {
- pctx->errcode = ext2fs_add_dir_block(fs->dblist, p->ino,
- blk, blockcnt);
- if (pctx->errcode) {
- pctx->blk = blk;
- pctx->num = blockcnt;
- fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
- /* Should never get here */
- ctx->flags |= E2F_FLAG_ABORT;
- return BLOCK_ABORT;
- }
- }
- return ret_code;
-}
-
-static int process_bad_block(ext2_filsys fs FSCK_ATTR((unused)),
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data EXT2FS_ATTR((unused)))
-{
- /*
- * Note: This function processes blocks for the bad blocks
- * inode, which is never compressed. So we don't use HOLE_BLKADDR().
- */
-
- printf("Unrecoverable Error: Found %"PRIi64" bad blocks starting at block number: %u\n", blockcnt, *block_nr);
- return BLOCK_ERROR;
-}
-
-/*
- * This routine gets called at the end of pass 1 if bad blocks are
- * detected in the superblock, group descriptors, inode_bitmaps, or
- * block bitmaps. At this point, all of the blocks have been mapped
- * out, so we can try to allocate new block(s) to replace the bad
- * blocks.
- */
-static void handle_fs_bad_blocks(e2fsck_t ctx)
-{
- printf("Bad blocks detected on your filesystem\n"
- "You should get your data off as the device will soon die\n");
-}
-
-/*
- * This routine marks all blocks which are used by the superblock,
- * group descriptors, inode bitmaps, and block bitmaps.
- */
-static void mark_table_blocks(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- blk_t block, b;
- dgrp_t i;
- int j;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- block = fs->super->s_first_data_block;
- for (i = 0; i < fs->group_desc_count; i++) {
- pctx.group = i;
-
- ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
-
- /*
- * Mark the blocks used for the inode table
- */
- if (fs->group_desc[i].bg_inode_table) {
- for (j = 0, b = fs->group_desc[i].bg_inode_table;
- j < fs->inode_blocks_per_group;
- j++, b++) {
- if (ext2fs_test_block_bitmap(ctx->block_found_map,
- b)) {
- pctx.blk = b;
- if (fix_problem(ctx,
- PR_1_ITABLE_CONFLICT, &pctx)) {
- ctx->invalid_inode_table_flag[i]++;
- ctx->invalid_bitmaps++;
- }
- } else {
- ext2fs_mark_block_bitmap(ctx->block_found_map,
- b);
- }
- }
- }
-
- /*
- * Mark block used for the block bitmap
- */
- if (fs->group_desc[i].bg_block_bitmap) {
- if (ext2fs_test_block_bitmap(ctx->block_found_map,
- fs->group_desc[i].bg_block_bitmap)) {
- pctx.blk = fs->group_desc[i].bg_block_bitmap;
- if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
- ctx->invalid_block_bitmap_flag[i]++;
- ctx->invalid_bitmaps++;
- }
- } else {
- ext2fs_mark_block_bitmap(ctx->block_found_map,
- fs->group_desc[i].bg_block_bitmap);
- }
-
- }
- /*
- * Mark block used for the inode bitmap
- */
- if (fs->group_desc[i].bg_inode_bitmap) {
- if (ext2fs_test_block_bitmap(ctx->block_found_map,
- fs->group_desc[i].bg_inode_bitmap)) {
- pctx.blk = fs->group_desc[i].bg_inode_bitmap;
- if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
- ctx->invalid_inode_bitmap_flag[i]++;
- ctx->invalid_bitmaps++;
- }
- } else {
- ext2fs_mark_block_bitmap(ctx->block_found_map,
- fs->group_desc[i].bg_inode_bitmap);
- }
- }
- block += fs->super->s_blocks_per_group;
- }
-}
-
-/*
- * Thes subroutines short circuits ext2fs_get_blocks and
- * ext2fs_check_directory; we use them since we already have the inode
- * structure, so there's no point in letting the ext2fs library read
- * the inode again.
- */
-static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
- blk_t *blocks)
-{
- e2fsck_t ctx = (e2fsck_t) fs->priv_data;
- int i;
-
- if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
- return EXT2_ET_CALLBACK_NOTHANDLED;
-
- for (i=0; i < EXT2_N_BLOCKS; i++)
- blocks[i] = ctx->stashed_inode->i_block[i];
- return 0;
-}
-
-static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode)
-{
- e2fsck_t ctx = (e2fsck_t) fs->priv_data;
-
- if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
- return EXT2_ET_CALLBACK_NOTHANDLED;
- *inode = *ctx->stashed_inode;
- return 0;
-}
-
-static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode)
-{
- e2fsck_t ctx = (e2fsck_t) fs->priv_data;
-
- if ((ino == ctx->stashed_ino) && ctx->stashed_inode)
- *ctx->stashed_inode = *inode;
- return EXT2_ET_CALLBACK_NOTHANDLED;
-}
-
-static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
-{
- e2fsck_t ctx = (e2fsck_t) fs->priv_data;
-
- if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
- return EXT2_ET_CALLBACK_NOTHANDLED;
-
- if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
- return EXT2_ET_NO_DIRECTORY;
- return 0;
-}
-
-void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool)
-{
- ext2_filsys fs = ctx->fs;
-
- if (bool) {
- fs->get_blocks = pass1_get_blocks;
- fs->check_directory = pass1_check_directory;
- fs->read_inode = pass1_read_inode;
- fs->write_inode = pass1_write_inode;
- ctx->stashed_ino = 0;
- } else {
- fs->get_blocks = 0;
- fs->check_directory = 0;
- fs->read_inode = 0;
- fs->write_inode = 0;
- }
-}
-
-/*
- * pass1b.c --- Pass #1b of e2fsck
- *
- * This file contains pass1B, pass1C, and pass1D of e2fsck. They are
- * only invoked if pass 1 discovered blocks which are in use by more
- * than one inode.
- *
- * Pass1B scans the data blocks of all the inodes again, generating a
- * complete list of duplicate blocks and which inodes have claimed
- * them.
- *
- * Pass1C does a tree-traversal of the filesystem, to determine the
- * parent directories of these inodes. This step is necessary so that
- * e2fsck can print out the pathnames of affected inodes.
- *
- * Pass1D is a reconciliation pass. For each inode with duplicate
- * blocks, the user is prompted if s/he would like to clone the file
- * (so that the file gets a fresh copy of the duplicated blocks) or
- * simply to delete the file.
- *
- */
-
-
-/* Needed for architectures where sizeof(int) != sizeof(void *) */
-#define INT_TO_VOIDPTR(val) ((void *)(intptr_t)(val))
-#define VOIDPTR_TO_INT(ptr) ((int)(intptr_t)(ptr))
-
-/* Define an extension to the ext2 library's block count information */
-#define BLOCK_COUNT_EXTATTR (-5)
-
-struct block_el {
- blk_t block;
- struct block_el *next;
-};
-
-struct inode_el {
- ext2_ino_t inode;
- struct inode_el *next;
-};
-
-struct dup_block {
- int num_bad;
- struct inode_el *inode_list;
-};
-
-/*
- * This structure stores information about a particular inode which
- * is sharing blocks with other inodes. This information is collected
- * to display to the user, so that the user knows what files he or she
- * is dealing with, when trying to decide how to resolve the conflict
- * of multiply-claimed blocks.
- */
-struct dup_inode {
- ext2_ino_t dir;
- int num_dupblocks;
- struct ext2_inode inode;
- struct block_el *block_list;
-};
-
-static int process_pass1b_block(ext2_filsys fs, blk_t *blocknr,
- e2_blkcnt_t blockcnt, blk_t ref_blk,
- int ref_offset, void *priv_data);
-static void delete_file(e2fsck_t ctx, ext2_ino_t ino,
- struct dup_inode *dp, char *block_buf);
-static int clone_file(e2fsck_t ctx, ext2_ino_t ino,
- struct dup_inode *dp, char* block_buf);
-static int check_if_fs_block(e2fsck_t ctx, blk_t test_blk);
-
-static void pass1b(e2fsck_t ctx, char *block_buf);
-static void pass1c(e2fsck_t ctx, char *block_buf);
-static void pass1d(e2fsck_t ctx, char *block_buf);
-
-static int dup_inode_count = 0;
-
-static dict_t blk_dict, ino_dict;
-
-static ext2fs_inode_bitmap inode_dup_map;
-
-static int dict_int_cmp(const void *a, const void *b)
-{
- intptr_t ia, ib;
-
- ia = (intptr_t)a;
- ib = (intptr_t)b;
-
- return (ia-ib);
-}
-
-/*
- * Add a duplicate block record
- */
-static void add_dupe(e2fsck_t ctx, ext2_ino_t ino, blk_t blk,
- struct ext2_inode *inode)
-{
- dnode_t *n;
- struct dup_block *db;
- struct dup_inode *di;
- struct block_el *blk_el;
- struct inode_el *ino_el;
-
- n = dict_lookup(&blk_dict, INT_TO_VOIDPTR(blk));
- if (n)
- db = (struct dup_block *) dnode_get(n);
- else {
- db = (struct dup_block *) e2fsck_allocate_memory(ctx,
- sizeof(struct dup_block), "duplicate block header");
- db->num_bad = 0;
- db->inode_list = 0;
- dict_alloc_insert(&blk_dict, INT_TO_VOIDPTR(blk), db);
- }
- ino_el = (struct inode_el *) e2fsck_allocate_memory(ctx,
- sizeof(struct inode_el), "inode element");
- ino_el->inode = ino;
- ino_el->next = db->inode_list;
- db->inode_list = ino_el;
- db->num_bad++;
-
- n = dict_lookup(&ino_dict, INT_TO_VOIDPTR(ino));
- if (n)
- di = (struct dup_inode *) dnode_get(n);
- else {
- di = (struct dup_inode *) e2fsck_allocate_memory(ctx,
- sizeof(struct dup_inode), "duplicate inode header");
- di->dir = (ino == EXT2_ROOT_INO) ? EXT2_ROOT_INO : 0 ;
- di->num_dupblocks = 0;
- di->block_list = 0;
- di->inode = *inode;
- dict_alloc_insert(&ino_dict, INT_TO_VOIDPTR(ino), di);
- }
- blk_el = (struct block_el *) e2fsck_allocate_memory(ctx,
- sizeof(struct block_el), "block element");
- blk_el->block = blk;
- blk_el->next = di->block_list;
- di->block_list = blk_el;
- di->num_dupblocks++;
-}
-
-/*
- * Free a duplicate inode record
- */
-static void inode_dnode_free(dnode_t *node)
-{
- struct dup_inode *di;
- struct block_el *p, *next;
-
- di = (struct dup_inode *) dnode_get(node);
- for (p = di->block_list; p; p = next) {
- next = p->next;
- free(p);
- }
- free(node);
-}
-
-/*
- * Free a duplicate block record
- */
-static void block_dnode_free(dnode_t *node)
-{
- struct dup_block *db;
- struct inode_el *p, *next;
-
- db = (struct dup_block *) dnode_get(node);
- for (p = db->inode_list; p; p = next) {
- next = p->next;
- free(p);
- }
- free(node);
-}
-
-
-/*
- * Main procedure for handling duplicate blocks
- */
-void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf)
-{
- ext2_filsys fs = ctx->fs;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
- _("multiply claimed inode map"), &inode_dup_map);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1B_ALLOCATE_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- dict_init(&ino_dict, DICTCOUNT_T_MAX, dict_int_cmp);
- dict_init(&blk_dict, DICTCOUNT_T_MAX, dict_int_cmp);
- dict_set_allocator(&ino_dict, inode_dnode_free);
- dict_set_allocator(&blk_dict, block_dnode_free);
-
- pass1b(ctx, block_buf);
- pass1c(ctx, block_buf);
- pass1d(ctx, block_buf);
-
- /*
- * Time to free all of the accumulated data structures that we
- * don't need anymore.
- */
- dict_free_nodes(&ino_dict);
- dict_free_nodes(&blk_dict);
-}
-
-/*
- * Scan the inodes looking for inodes that contain duplicate blocks.
- */
-struct process_block_struct_1b {
- e2fsck_t ctx;
- ext2_ino_t ino;
- int dup_blocks;
- struct ext2_inode *inode;
- struct problem_context *pctx;
-};
-
-static void pass1b(e2fsck_t ctx, char *block_buf)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t ino;
- struct ext2_inode inode;
- ext2_inode_scan scan;
- struct process_block_struct_1b pb;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_1B_PASS_HEADER, &pctx);
- pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
- &scan);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1B_ISCAN_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ctx->stashed_inode = &inode;
- pb.ctx = ctx;
- pb.pctx = &pctx;
- pctx.str = "pass1b";
- while (1) {
- pctx.errcode = ext2fs_get_next_inode(scan, &ino, &inode);
- if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE)
- continue;
- if (pctx.errcode) {
- fix_problem(ctx, PR_1B_ISCAN_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if (!ino)
- break;
- pctx.ino = ctx->stashed_ino = ino;
- if ((ino != EXT2_BAD_INO) &&
- !ext2fs_test_inode_bitmap(ctx->inode_used_map, ino))
- continue;
-
- pb.ino = ino;
- pb.dup_blocks = 0;
- pb.inode = &inode;
-
- if (ext2fs_inode_has_valid_blocks(&inode) ||
- (ino == EXT2_BAD_INO))
- pctx.errcode = ext2fs_block_iterate2(fs, ino,
- 0, block_buf, process_pass1b_block, &pb);
- if (inode.i_file_acl)
- process_pass1b_block(fs, &inode.i_file_acl,
- BLOCK_COUNT_EXTATTR, 0, 0, &pb);
- if (pb.dup_blocks) {
- end_problem_latch(ctx, PR_LATCH_DBLOCK);
- if (ino >= EXT2_FIRST_INODE(fs->super) ||
- ino == EXT2_ROOT_INO)
- dup_inode_count++;
- }
- if (pctx.errcode)
- fix_problem(ctx, PR_1B_BLOCK_ITERATE, &pctx);
- }
- ext2fs_close_inode_scan(scan);
- e2fsck_use_inode_shortcuts(ctx, 0);
-}
-
-static int process_pass1b_block(ext2_filsys fs FSCK_ATTR((unused)),
- blk_t *block_nr,
- e2_blkcnt_t blockcnt FSCK_ATTR((unused)),
- blk_t ref_blk FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct process_block_struct_1b *p;
- e2fsck_t ctx;
-
- if (HOLE_BLKADDR(*block_nr))
- return 0;
- p = (struct process_block_struct_1b *) priv_data;
- ctx = p->ctx;
-
- if (!ext2fs_test_block_bitmap(ctx->block_dup_map, *block_nr))
- return 0;
-
- /* OK, this is a duplicate block */
- if (p->ino != EXT2_BAD_INO) {
- p->pctx->blk = *block_nr;
- fix_problem(ctx, PR_1B_DUP_BLOCK, p->pctx);
- }
- p->dup_blocks++;
- ext2fs_mark_inode_bitmap(inode_dup_map, p->ino);
-
- add_dupe(ctx, p->ino, *block_nr, p->inode);
-
- return 0;
-}
-
-/*
- * Pass 1c: Scan directories for inodes with duplicate blocks. This
- * is used so that we can print pathnames when prompting the user for
- * what to do.
- */
-struct search_dir_struct {
- int count;
- ext2_ino_t first_inode;
- ext2_ino_t max_inode;
-};
-
-static int search_dirent_proc(ext2_ino_t dir, int entry,
- struct ext2_dir_entry *dirent,
- int offset FSCK_ATTR((unused)),
- int blocksize FSCK_ATTR((unused)),
- char *buf FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct search_dir_struct *sd;
- struct dup_inode *p;
- dnode_t *n;
-
- sd = (struct search_dir_struct *) priv_data;
-
- if (dirent->inode > sd->max_inode)
- /* Should abort this inode, but not everything */
- return 0;
-
- if ((dirent->inode < sd->first_inode) || (entry < DIRENT_OTHER_FILE) ||
- !ext2fs_test_inode_bitmap(inode_dup_map, dirent->inode))
- return 0;
-
- n = dict_lookup(&ino_dict, INT_TO_VOIDPTR(dirent->inode));
- if (!n)
- return 0;
- p = (struct dup_inode *) dnode_get(n);
- p->dir = dir;
- sd->count--;
-
- return sd->count ? 0 : DIRENT_ABORT;
-}
-
-
-static void pass1c(e2fsck_t ctx, char *block_buf)
-{
- ext2_filsys fs = ctx->fs;
- struct search_dir_struct sd;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_1C_PASS_HEADER, &pctx);
-
- /*
- * Search through all directories to translate inodes to names
- * (by searching for the containing directory for that inode.)
- */
- sd.count = dup_inode_count;
- sd.first_inode = EXT2_FIRST_INODE(fs->super);
- sd.max_inode = fs->super->s_inodes_count;
- ext2fs_dblist_dir_iterate(fs->dblist, 0, block_buf,
- search_dirent_proc, &sd);
-}
-
-static void pass1d(e2fsck_t ctx, char *block_buf)
-{
- ext2_filsys fs = ctx->fs;
- struct dup_inode *p, *t;
- struct dup_block *q;
- ext2_ino_t *shared, ino;
- int shared_len;
- int i;
- int file_ok;
- int meta_data = 0;
- struct problem_context pctx;
- dnode_t *n, *m;
- struct block_el *s;
- struct inode_el *r;
-
- clear_problem_context(&pctx);
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_1D_PASS_HEADER, &pctx);
- e2fsck_read_bitmaps(ctx);
-
- pctx.num = dup_inode_count; /* dict_count(&ino_dict); */
- fix_problem(ctx, PR_1D_NUM_DUP_INODES, &pctx);
- shared = (ext2_ino_t *) e2fsck_allocate_memory(ctx,
- sizeof(ext2_ino_t) * dict_count(&ino_dict),
- "Shared inode list");
- for (n = dict_first(&ino_dict); n; n = dict_next(&ino_dict, n)) {
- p = (struct dup_inode *) dnode_get(n);
- shared_len = 0;
- file_ok = 1;
- ino = (ext2_ino_t)VOIDPTR_TO_INT(dnode_getkey(n));
- if (ino == EXT2_BAD_INO || ino == EXT2_RESIZE_INO)
- continue;
-
- /*
- * Find all of the inodes which share blocks with this
- * one. First we find all of the duplicate blocks
- * belonging to this inode, and then search each block
- * get the list of inodes, and merge them together.
- */
- for (s = p->block_list; s; s = s->next) {
- m = dict_lookup(&blk_dict, INT_TO_VOIDPTR(s->block));
- if (!m)
- continue; /* Should never happen... */
- q = (struct dup_block *) dnode_get(m);
- if (q->num_bad > 1)
- file_ok = 0;
- if (check_if_fs_block(ctx, s->block)) {
- file_ok = 0;
- meta_data = 1;
- }
-
- /*
- * Add all inodes used by this block to the
- * shared[] --- which is a unique list, so
- * if an inode is already in shared[], don't
- * add it again.
- */
- for (r = q->inode_list; r; r = r->next) {
- if (r->inode == ino)
- continue;
- for (i = 0; i < shared_len; i++)
- if (shared[i] == r->inode)
- break;
- if (i == shared_len) {
- shared[shared_len++] = r->inode;
- }
- }
- }
-
- /*
- * Report the inode that we are working on
- */
- pctx.inode = &p->inode;
- pctx.ino = ino;
- pctx.dir = p->dir;
- pctx.blkcount = p->num_dupblocks;
- pctx.num = meta_data ? shared_len+1 : shared_len;
- fix_problem(ctx, PR_1D_DUP_FILE, &pctx);
- pctx.blkcount = 0;
- pctx.num = 0;
-
- if (meta_data)
- fix_problem(ctx, PR_1D_SHARE_METADATA, &pctx);
-
- for (i = 0; i < shared_len; i++) {
- m = dict_lookup(&ino_dict, INT_TO_VOIDPTR(shared[i]));
- if (!m)
- continue; /* should never happen */
- t = (struct dup_inode *) dnode_get(m);
- /*
- * Report the inode that we are sharing with
- */
- pctx.inode = &t->inode;
- pctx.ino = shared[i];
- pctx.dir = t->dir;
- fix_problem(ctx, PR_1D_DUP_FILE_LIST, &pctx);
- }
- if (file_ok) {
- fix_problem(ctx, PR_1D_DUP_BLOCKS_DEALT, &pctx);
- continue;
- }
- if (fix_problem(ctx, PR_1D_CLONE_QUESTION, &pctx)) {
- pctx.errcode = clone_file(ctx, ino, p, block_buf);
- if (pctx.errcode)
- fix_problem(ctx, PR_1D_CLONE_ERROR, &pctx);
- else
- continue;
- }
- if (fix_problem(ctx, PR_1D_DELETE_QUESTION, &pctx))
- delete_file(ctx, ino, p, block_buf);
- else
- ext2fs_unmark_valid(fs);
- }
- ext2fs_free_mem(&shared);
-}
-
-/*
- * Drop the refcount on the dup_block structure, and clear the entry
- * in the block_dup_map if appropriate.
- */
-static void decrement_badcount(e2fsck_t ctx, blk_t block, struct dup_block *p)
-{
- p->num_bad--;
- if (p->num_bad <= 0 ||
- (p->num_bad == 1 && !check_if_fs_block(ctx, block)))
- ext2fs_unmark_block_bitmap(ctx->block_dup_map, block);
-}
-
-static int delete_file_block(ext2_filsys fs,
- blk_t *block_nr,
- e2_blkcnt_t blockcnt FSCK_ATTR((unused)),
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct process_block_struct_1b *pb;
- struct dup_block *p;
- dnode_t *n;
- e2fsck_t ctx;
-
- pb = (struct process_block_struct_1b *) priv_data;
- ctx = pb->ctx;
-
- if (HOLE_BLKADDR(*block_nr))
- return 0;
-
- if (ext2fs_test_block_bitmap(ctx->block_dup_map, *block_nr)) {
- n = dict_lookup(&blk_dict, INT_TO_VOIDPTR(*block_nr));
- if (n) {
- p = (struct dup_block *) dnode_get(n);
- decrement_badcount(ctx, *block_nr, p);
- } else
- bb_error_msg(_("internal error; can't find dup_blk for %d"),
- *block_nr);
- } else {
- ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr);
- ext2fs_block_alloc_stats(fs, *block_nr, -1);
- }
-
- return 0;
-}
-
-static void delete_file(e2fsck_t ctx, ext2_ino_t ino,
- struct dup_inode *dp, char* block_buf)
-{
- ext2_filsys fs = ctx->fs;
- struct process_block_struct_1b pb;
- struct ext2_inode inode;
- struct problem_context pctx;
- unsigned int count;
-
- clear_problem_context(&pctx);
- pctx.ino = pb.ino = ino;
- pb.dup_blocks = dp->num_dupblocks;
- pb.ctx = ctx;
- pctx.str = "delete_file";
-
- e2fsck_read_inode(ctx, ino, &inode, "delete_file");
- if (ext2fs_inode_has_valid_blocks(&inode))
- pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf,
- delete_file_block, &pb);
- if (pctx.errcode)
- fix_problem(ctx, PR_1B_BLOCK_ITERATE, &pctx);
- ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
- ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
- if (ctx->inode_bad_map)
- ext2fs_unmark_inode_bitmap(ctx->inode_bad_map, ino);
- ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(inode.i_mode));
-
- /* Inode may have changed by block_iterate, so reread it */
- e2fsck_read_inode(ctx, ino, &inode, "delete_file");
- inode.i_links_count = 0;
- inode.i_dtime = time(0);
- if (inode.i_file_acl &&
- (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) {
- count = 1;
- pctx.errcode = ext2fs_adjust_ea_refcount(fs, inode.i_file_acl,
- block_buf, -1, &count);
- if (pctx.errcode == EXT2_ET_BAD_EA_BLOCK_NUM) {
- pctx.errcode = 0;
- count = 1;
- }
- if (pctx.errcode) {
- pctx.blk = inode.i_file_acl;
- fix_problem(ctx, PR_1B_ADJ_EA_REFCOUNT, &pctx);
- }
- /*
- * If the count is zero, then arrange to have the
- * block deleted. If the block is in the block_dup_map,
- * also call delete_file_block since it will take care
- * of keeping the accounting straight.
- */
- if ((count == 0) ||
- ext2fs_test_block_bitmap(ctx->block_dup_map,
- inode.i_file_acl))
- delete_file_block(fs, &inode.i_file_acl,
- BLOCK_COUNT_EXTATTR, 0, 0, &pb);
- }
- e2fsck_write_inode(ctx, ino, &inode, "delete_file");
-}
-
-struct clone_struct {
- errcode_t errcode;
- ext2_ino_t dir;
- char *buf;
- e2fsck_t ctx;
-};
-
-static int clone_file_block(ext2_filsys fs,
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct dup_block *p;
- blk_t new_block;
- errcode_t retval;
- struct clone_struct *cs = (struct clone_struct *) priv_data;
- dnode_t *n;
- e2fsck_t ctx;
-
- ctx = cs->ctx;
-
- if (HOLE_BLKADDR(*block_nr))
- return 0;
-
- if (ext2fs_test_block_bitmap(ctx->block_dup_map, *block_nr)) {
- n = dict_lookup(&blk_dict, INT_TO_VOIDPTR(*block_nr));
- if (n) {
- p = (struct dup_block *) dnode_get(n);
- retval = ext2fs_new_block(fs, 0, ctx->block_found_map,
- &new_block);
- if (retval) {
- cs->errcode = retval;
- return BLOCK_ABORT;
- }
- if (cs->dir && (blockcnt >= 0)) {
- retval = ext2fs_set_dir_block(fs->dblist,
- cs->dir, new_block, blockcnt);
- if (retval) {
- cs->errcode = retval;
- return BLOCK_ABORT;
- }
- }
-
- retval = io_channel_read_blk(fs->io, *block_nr, 1,
- cs->buf);
- if (retval) {
- cs->errcode = retval;
- return BLOCK_ABORT;
- }
- retval = io_channel_write_blk(fs->io, new_block, 1,
- cs->buf);
- if (retval) {
- cs->errcode = retval;
- return BLOCK_ABORT;
- }
- decrement_badcount(ctx, *block_nr, p);
- *block_nr = new_block;
- ext2fs_mark_block_bitmap(ctx->block_found_map,
- new_block);
- ext2fs_mark_block_bitmap(fs->block_map, new_block);
- return BLOCK_CHANGED;
- } else
- bb_error_msg(_("internal error; can't find dup_blk for %d"),
- *block_nr);
- }
- return 0;
-}
-
-static int clone_file(e2fsck_t ctx, ext2_ino_t ino,
- struct dup_inode *dp, char* block_buf)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- struct clone_struct cs;
- struct problem_context pctx;
- blk_t blk;
- dnode_t *n;
- struct inode_el *ino_el;
- struct dup_block *db;
- struct dup_inode *di;
-
- clear_problem_context(&pctx);
- cs.errcode = 0;
- cs.dir = 0;
- cs.ctx = ctx;
- retval = ext2fs_get_mem(fs->blocksize, &cs.buf);
- if (retval)
- return retval;
-
- if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, ino))
- cs.dir = ino;
-
- pctx.ino = ino;
- pctx.str = "clone_file";
- if (ext2fs_inode_has_valid_blocks(&dp->inode))
- pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf,
- clone_file_block, &cs);
- ext2fs_mark_bb_dirty(fs);
- if (pctx.errcode) {
- fix_problem(ctx, PR_1B_BLOCK_ITERATE, &pctx);
- retval = pctx.errcode;
- goto errout;
- }
- if (cs.errcode) {
- bb_error_msg(_("returned from clone_file_block"));
- retval = cs.errcode;
- goto errout;
- }
- /* The inode may have changed on disk, so we have to re-read it */
- e2fsck_read_inode(ctx, ino, &dp->inode, "clone file EA");
- blk = dp->inode.i_file_acl;
- if (blk && (clone_file_block(fs, &dp->inode.i_file_acl,
- BLOCK_COUNT_EXTATTR, 0, 0, &cs) ==
- BLOCK_CHANGED)) {
- e2fsck_write_inode(ctx, ino, &dp->inode, "clone file EA");
- /*
- * If we cloned the EA block, find all other inodes
- * which refered to that EA block, and modify
- * them to point to the new EA block.
- */
- n = dict_lookup(&blk_dict, INT_TO_VOIDPTR(blk));
- db = (struct dup_block *) dnode_get(n);
- for (ino_el = db->inode_list; ino_el; ino_el = ino_el->next) {
- if (ino_el->inode == ino)
- continue;
- n = dict_lookup(&ino_dict, INT_TO_VOIDPTR(ino_el->inode));
- di = (struct dup_inode *) dnode_get(n);
- if (di->inode.i_file_acl == blk) {
- di->inode.i_file_acl = dp->inode.i_file_acl;
- e2fsck_write_inode(ctx, ino_el->inode,
- &di->inode, "clone file EA");
- decrement_badcount(ctx, blk, db);
- }
- }
- }
- retval = 0;
-errout:
- ext2fs_free_mem(&cs.buf);
- return retval;
-}
-
-/*
- * This routine returns 1 if a block overlaps with one of the superblocks,
- * group descriptors, inode bitmaps, or block bitmaps.
- */
-static int check_if_fs_block(e2fsck_t ctx, blk_t test_block)
-{
- ext2_filsys fs = ctx->fs;
- blk_t block;
- dgrp_t i;
-
- block = fs->super->s_first_data_block;
- for (i = 0; i < fs->group_desc_count; i++) {
-
- /* Check superblocks/block group descriptros */
- if (ext2fs_bg_has_super(fs, i)) {
- if (test_block >= block &&
- (test_block <= block + fs->desc_blocks))
- return 1;
- }
-
- /* Check the inode table */
- if ((fs->group_desc[i].bg_inode_table) &&
- (test_block >= fs->group_desc[i].bg_inode_table) &&
- (test_block < (fs->group_desc[i].bg_inode_table +
- fs->inode_blocks_per_group)))
- return 1;
-
- /* Check the bitmap blocks */
- if ((test_block == fs->group_desc[i].bg_block_bitmap) ||
- (test_block == fs->group_desc[i].bg_inode_bitmap))
- return 1;
-
- block += fs->super->s_blocks_per_group;
- }
- return 0;
-}
-/*
- * pass2.c --- check directory structure
- *
- * Pass 2 of e2fsck iterates through all active directory inodes, and
- * applies to following tests to each directory entry in the directory
- * blocks in the inodes:
- *
- * - The length of the directory entry (rec_len) should be at
- * least 8 bytes, and no more than the remaining space
- * left in the directory block.
- * - The length of the name in the directory entry (name_len)
- * should be less than (rec_len - 8).
- * - The inode number in the directory entry should be within
- * legal bounds.
- * - The inode number should refer to a in-use inode.
- * - The first entry should be '.', and its inode should be
- * the inode of the directory.
- * - The second entry should be '..'.
- *
- * To minimize disk seek time, the directory blocks are processed in
- * sorted order of block numbers.
- *
- * Pass 2 also collects the following information:
- * - The inode numbers of the subdirectories for each directory.
- *
- * Pass 2 relies on the following information from previous passes:
- * - The directory information collected in pass 1.
- * - The inode_used_map bitmap
- * - The inode_bad_map bitmap
- * - The inode_dir_map bitmap
- *
- * Pass 2 frees the following data structures
- * - The inode_bad_map bitmap
- * - The inode_reg_map bitmap
- */
-
-/*
- * Keeps track of how many times an inode is referenced.
- */
-static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf);
-static int check_dir_block(ext2_filsys fs,
- struct ext2_db_entry *dir_blocks_info,
- void *priv_data);
-static int allocate_dir_block(e2fsck_t ctx, struct ext2_db_entry *dir_blocks_info,
- struct problem_context *pctx);
-static int update_dir_block(ext2_filsys fs,
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block,
- int ref_offset,
- void *priv_data);
-static void clear_htree(e2fsck_t ctx, ext2_ino_t ino);
-static int htree_depth(struct dx_dir_info *dx_dir,
- struct dx_dirblock_info *dx_db);
-static int special_dir_block_cmp(const void *a, const void *b);
-
-struct check_dir_struct {
- char *buf;
- struct problem_context pctx;
- int count, max;
- e2fsck_t ctx;
-};
-
-static void e2fsck_pass2(e2fsck_t ctx)
-{
- struct ext2_super_block *sb = ctx->fs->super;
- struct problem_context pctx;
- ext2_filsys fs = ctx->fs;
- char *buf;
- struct dir_info *dir;
- struct check_dir_struct cd;
- struct dx_dir_info *dx_dir;
- struct dx_dirblock_info *dx_db, *dx_parent;
- int b;
- int i, depth;
- problem_t code;
- int bad_dir;
-
- clear_problem_context(&cd.pctx);
-
- /* Pass 2 */
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_2_PASS_HEADER, &cd.pctx);
-
- cd.pctx.errcode = ext2fs_create_icount2(fs, EXT2_ICOUNT_OPT_INCREMENT,
- 0, ctx->inode_link_info,
- &ctx->inode_count);
- if (cd.pctx.errcode) {
- fix_problem(ctx, PR_2_ALLOCATE_ICOUNT, &cd.pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- buf = (char *) e2fsck_allocate_memory(ctx, 2*fs->blocksize,
- "directory scan buffer");
-
- /*
- * Set up the parent pointer for the root directory, if
- * present. (If the root directory is not present, we will
- * create it in pass 3.)
- */
- dir = e2fsck_get_dir_info(ctx, EXT2_ROOT_INO);
- if (dir)
- dir->parent = EXT2_ROOT_INO;
-
- cd.buf = buf;
- cd.ctx = ctx;
- cd.count = 1;
- cd.max = ext2fs_dblist_count(fs->dblist);
-
- if (ctx->progress)
- (void) (ctx->progress)(ctx, 2, 0, cd.max);
-
- if (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX)
- ext2fs_dblist_sort(fs->dblist, special_dir_block_cmp);
-
- cd.pctx.errcode = ext2fs_dblist_iterate(fs->dblist, check_dir_block,
- &cd);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- if (cd.pctx.errcode) {
- fix_problem(ctx, PR_2_DBLIST_ITERATE, &cd.pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
-#ifdef ENABLE_HTREE
- for (i=0; (dx_dir = e2fsck_dx_dir_info_iter(ctx, &i)) != 0;) {
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- if (dx_dir->numblocks == 0)
- continue;
- clear_problem_context(&pctx);
- bad_dir = 0;
- pctx.dir = dx_dir->ino;
- dx_db = dx_dir->dx_block;
- if (dx_db->flags & DX_FLAG_REFERENCED)
- dx_db->flags |= DX_FLAG_DUP_REF;
- else
- dx_db->flags |= DX_FLAG_REFERENCED;
- /*
- * Find all of the first and last leaf blocks, and
- * update their parent's min and max hash values
- */
- for (b=0, dx_db = dx_dir->dx_block;
- b < dx_dir->numblocks;
- b++, dx_db++) {
- if ((dx_db->type != DX_DIRBLOCK_LEAF) ||
- !(dx_db->flags & (DX_FLAG_FIRST | DX_FLAG_LAST)))
- continue;
- dx_parent = &dx_dir->dx_block[dx_db->parent];
- /*
- * XXX Make sure dx_parent->min_hash > dx_db->min_hash
- */
- if (dx_db->flags & DX_FLAG_FIRST)
- dx_parent->min_hash = dx_db->min_hash;
- /*
- * XXX Make sure dx_parent->max_hash < dx_db->max_hash
- */
- if (dx_db->flags & DX_FLAG_LAST)
- dx_parent->max_hash = dx_db->max_hash;
- }
-
- for (b=0, dx_db = dx_dir->dx_block;
- b < dx_dir->numblocks;
- b++, dx_db++) {
- pctx.blkcount = b;
- pctx.group = dx_db->parent;
- code = 0;
- if (!(dx_db->flags & DX_FLAG_FIRST) &&
- (dx_db->min_hash < dx_db->node_min_hash)) {
- pctx.blk = dx_db->min_hash;
- pctx.blk2 = dx_db->node_min_hash;
- code = PR_2_HTREE_MIN_HASH;
- fix_problem(ctx, code, &pctx);
- bad_dir++;
- }
- if (dx_db->type == DX_DIRBLOCK_LEAF) {
- depth = htree_depth(dx_dir, dx_db);
- if (depth != dx_dir->depth) {
- code = PR_2_HTREE_BAD_DEPTH;
- fix_problem(ctx, code, &pctx);
- bad_dir++;
- }
- }
- /*
- * This test doesn't apply for the root block
- * at block #0
- */
- if (b &&
- (dx_db->max_hash > dx_db->node_max_hash)) {
- pctx.blk = dx_db->max_hash;
- pctx.blk2 = dx_db->node_max_hash;
- code = PR_2_HTREE_MAX_HASH;
- fix_problem(ctx, code, &pctx);
- bad_dir++;
- }
- if (!(dx_db->flags & DX_FLAG_REFERENCED)) {
- code = PR_2_HTREE_NOTREF;
- fix_problem(ctx, code, &pctx);
- bad_dir++;
- } else if (dx_db->flags & DX_FLAG_DUP_REF) {
- code = PR_2_HTREE_DUPREF;
- fix_problem(ctx, code, &pctx);
- bad_dir++;
- }
- if (code == 0)
- continue;
- }
- if (bad_dir && fix_problem(ctx, PR_2_HTREE_CLEAR, &pctx)) {
- clear_htree(ctx, dx_dir->ino);
- dx_dir->numblocks = 0;
- }
- }
-#endif
- ext2fs_free_mem(&buf);
- ext2fs_free_dblist(fs->dblist);
-
- ext2fs_free_inode_bitmap(ctx->inode_bad_map);
- ctx->inode_bad_map = 0;
- ext2fs_free_inode_bitmap(ctx->inode_reg_map);
- ctx->inode_reg_map = 0;
-
- clear_problem_context(&pctx);
- if (ctx->large_files) {
- if (!(sb->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE) &&
- fix_problem(ctx, PR_2_FEATURE_LARGE_FILES, &pctx)) {
- sb->s_feature_ro_compat |=
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
- ext2fs_mark_super_dirty(fs);
- }
- if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
- fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
- ext2fs_update_dynamic_rev(fs);
- ext2fs_mark_super_dirty(fs);
- }
- } else if (!ctx->large_files &&
- (sb->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
- if (fs->flags & EXT2_FLAG_RW) {
- sb->s_feature_ro_compat &=
- ~EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
- ext2fs_mark_super_dirty(fs);
- }
- }
-
-}
-
-#define MAX_DEPTH 32000
-static int htree_depth(struct dx_dir_info *dx_dir,
- struct dx_dirblock_info *dx_db)
-{
- int depth = 0;
-
- while (dx_db->type != DX_DIRBLOCK_ROOT && depth < MAX_DEPTH) {
- dx_db = &dx_dir->dx_block[dx_db->parent];
- depth++;
- }
- return depth;
-}
-
-static int dict_de_cmp(const void *a, const void *b)
-{
- const struct ext2_dir_entry *de_a, *de_b;
- int a_len, b_len;
-
- de_a = (const struct ext2_dir_entry *) a;
- a_len = de_a->name_len & 0xFF;
- de_b = (const struct ext2_dir_entry *) b;
- b_len = de_b->name_len & 0xFF;
-
- if (a_len != b_len)
- return (a_len - b_len);
-
- return strncmp(de_a->name, de_b->name, a_len);
-}
-
-/*
- * This is special sort function that makes sure that directory blocks
- * with a dirblock of zero are sorted to the beginning of the list.
- * This guarantees that the root node of the htree directories are
- * processed first, so we know what hash version to use.
- */
-static int special_dir_block_cmp(const void *a, const void *b)
-{
- const struct ext2_db_entry *db_a =
- (const struct ext2_db_entry *) a;
- const struct ext2_db_entry *db_b =
- (const struct ext2_db_entry *) b;
-
- if (db_a->blockcnt && !db_b->blockcnt)
- return 1;
-
- if (!db_a->blockcnt && db_b->blockcnt)
- return -1;
-
- if (db_a->blk != db_b->blk)
- return (int) (db_a->blk - db_b->blk);
-
- if (db_a->ino != db_b->ino)
- return (int) (db_a->ino - db_b->ino);
-
- return (int) (db_a->blockcnt - db_b->blockcnt);
-}
-
-
-/*
- * Make sure the first entry in the directory is '.', and that the
- * directory entry is sane.
- */
-static int check_dot(e2fsck_t ctx,
- struct ext2_dir_entry *dirent,
- ext2_ino_t ino, struct problem_context *pctx)
-{
- struct ext2_dir_entry *nextdir;
- int status = 0;
- int created = 0;
- int new_len;
- int problem = 0;
-
- if (!dirent->inode)
- problem = PR_2_MISSING_DOT;
- else if (((dirent->name_len & 0xFF) != 1) ||
- (dirent->name[0] != '.'))
- problem = PR_2_1ST_NOT_DOT;
- else if (dirent->name[1] != '\0')
- problem = PR_2_DOT_NULL_TERM;
-
- if (problem) {
- if (fix_problem(ctx, problem, pctx)) {
- if (dirent->rec_len < 12)
- dirent->rec_len = 12;
- dirent->inode = ino;
- dirent->name_len = 1;
- dirent->name[0] = '.';
- dirent->name[1] = '\0';
- status = 1;
- created = 1;
- }
- }
- if (dirent->inode != ino) {
- if (fix_problem(ctx, PR_2_BAD_INODE_DOT, pctx)) {
- dirent->inode = ino;
- status = 1;
- }
- }
- if (dirent->rec_len > 12) {
- new_len = dirent->rec_len - 12;
- if (new_len > 12) {
- if (created ||
- fix_problem(ctx, PR_2_SPLIT_DOT, pctx)) {
- nextdir = (struct ext2_dir_entry *)
- ((char *) dirent + 12);
- dirent->rec_len = 12;
- nextdir->rec_len = new_len;
- nextdir->inode = 0;
- nextdir->name_len = 0;
- status = 1;
- }
- }
- }
- return status;
-}
-
-/*
- * Make sure the second entry in the directory is '..', and that the
- * directory entry is sane. We do not check the inode number of '..'
- * here; this gets done in pass 3.
- */
-static int check_dotdot(e2fsck_t ctx,
- struct ext2_dir_entry *dirent,
- struct dir_info *dir, struct problem_context *pctx)
-{
- int problem = 0;
-
- if (!dirent->inode)
- problem = PR_2_MISSING_DOT_DOT;
- else if (((dirent->name_len & 0xFF) != 2) ||
- (dirent->name[0] != '.') ||
- (dirent->name[1] != '.'))
- problem = PR_2_2ND_NOT_DOT_DOT;
- else if (dirent->name[2] != '\0')
- problem = PR_2_DOT_DOT_NULL_TERM;
-
- if (problem) {
- if (fix_problem(ctx, problem, pctx)) {
- if (dirent->rec_len < 12)
- dirent->rec_len = 12;
- /*
- * Note: we don't have the parent inode just
- * yet, so we will fill it in with the root
- * inode. This will get fixed in pass 3.
- */
- dirent->inode = EXT2_ROOT_INO;
- dirent->name_len = 2;
- dirent->name[0] = '.';
- dirent->name[1] = '.';
- dirent->name[2] = '\0';
- return 1;
- }
- return 0;
- }
- dir->dotdot = dirent->inode;
- return 0;
-}
-
-/*
- * Check to make sure a directory entry doesn't contain any illegal
- * characters.
- */
-static int check_name(e2fsck_t ctx,
- struct ext2_dir_entry *dirent,
- struct problem_context *pctx)
-{
- int i;
- int fixup = -1;
- int ret = 0;
-
- for ( i = 0; i < (dirent->name_len & 0xFF); i++) {
- if (dirent->name[i] == '/' || dirent->name[i] == '\0') {
- if (fixup < 0) {
- fixup = fix_problem(ctx, PR_2_BAD_NAME, pctx);
- }
- if (fixup) {
- dirent->name[i] = '.';
- ret = 1;
- }
- }
- }
- return ret;
-}
-
-/*
- * Check the directory filetype (if present)
- */
-
-/*
- * Given a mode, return the ext2 file type
- */
-static int ext2_file_type(unsigned int mode)
-{
- if (LINUX_S_ISREG(mode))
- return EXT2_FT_REG_FILE;
-
- if (LINUX_S_ISDIR(mode))
- return EXT2_FT_DIR;
-
- if (LINUX_S_ISCHR(mode))
- return EXT2_FT_CHRDEV;
-
- if (LINUX_S_ISBLK(mode))
- return EXT2_FT_BLKDEV;
-
- if (LINUX_S_ISLNK(mode))
- return EXT2_FT_SYMLINK;
-
- if (LINUX_S_ISFIFO(mode))
- return EXT2_FT_FIFO;
-
- if (LINUX_S_ISSOCK(mode))
- return EXT2_FT_SOCK;
-
- return 0;
-}
-
-static int check_filetype(e2fsck_t ctx,
- struct ext2_dir_entry *dirent,
- struct problem_context *pctx)
-{
- int filetype = dirent->name_len >> 8;
- int should_be = EXT2_FT_UNKNOWN;
- struct ext2_inode inode;
-
- if (!(ctx->fs->super->s_feature_incompat &
- EXT2_FEATURE_INCOMPAT_FILETYPE)) {
- if (filetype == 0 ||
- !fix_problem(ctx, PR_2_CLEAR_FILETYPE, pctx))
- return 0;
- dirent->name_len = dirent->name_len & 0xFF;
- return 1;
- }
-
- if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, dirent->inode)) {
- should_be = EXT2_FT_DIR;
- } else if (ext2fs_test_inode_bitmap(ctx->inode_reg_map,
- dirent->inode)) {
- should_be = EXT2_FT_REG_FILE;
- } else if (ctx->inode_bad_map &&
- ext2fs_test_inode_bitmap(ctx->inode_bad_map,
- dirent->inode))
- should_be = 0;
- else {
- e2fsck_read_inode(ctx, dirent->inode, &inode,
- "check_filetype");
- should_be = ext2_file_type(inode.i_mode);
- }
- if (filetype == should_be)
- return 0;
- pctx->num = should_be;
-
- if (fix_problem(ctx, filetype ? PR_2_BAD_FILETYPE : PR_2_SET_FILETYPE,
- pctx) == 0)
- return 0;
-
- dirent->name_len = (dirent->name_len & 0xFF) | should_be << 8;
- return 1;
-}
-
-#ifdef ENABLE_HTREE
-static void parse_int_node(ext2_filsys fs,
- struct ext2_db_entry *db,
- struct check_dir_struct *cd,
- struct dx_dir_info *dx_dir,
- char *block_buf)
-{
- struct ext2_dx_root_info *root;
- struct ext2_dx_entry *ent;
- struct ext2_dx_countlimit *limit;
- struct dx_dirblock_info *dx_db;
- int i, expect_limit, count;
- blk_t blk;
- ext2_dirhash_t min_hash = 0xffffffff;
- ext2_dirhash_t max_hash = 0;
- ext2_dirhash_t hash = 0, prev_hash;
-
- if (db->blockcnt == 0) {
- root = (struct ext2_dx_root_info *) (block_buf + 24);
- ent = (struct ext2_dx_entry *) (block_buf + 24 + root->info_length);
- } else {
- ent = (struct ext2_dx_entry *) (block_buf+8);
- }
- limit = (struct ext2_dx_countlimit *) ent;
-
- count = ext2fs_le16_to_cpu(limit->count);
- expect_limit = (fs->blocksize - ((char *) ent - block_buf)) /
- sizeof(struct ext2_dx_entry);
- if (ext2fs_le16_to_cpu(limit->limit) != expect_limit) {
- cd->pctx.num = ext2fs_le16_to_cpu(limit->limit);
- if (fix_problem(cd->ctx, PR_2_HTREE_BAD_LIMIT, &cd->pctx))
- goto clear_and_exit;
- }
- if (count > expect_limit) {
- cd->pctx.num = count;
- if (fix_problem(cd->ctx, PR_2_HTREE_BAD_COUNT, &cd->pctx))
- goto clear_and_exit;
- count = expect_limit;
- }
-
- for (i=0; i < count; i++) {
- prev_hash = hash;
- hash = i ? (ext2fs_le32_to_cpu(ent[i].hash) & ~1) : 0;
- blk = ext2fs_le32_to_cpu(ent[i].block) & 0x0ffffff;
- /* Check to make sure the block is valid */
- if (blk > (blk_t) dx_dir->numblocks) {
- cd->pctx.blk = blk;
- if (fix_problem(cd->ctx, PR_2_HTREE_BADBLK,
- &cd->pctx))
- goto clear_and_exit;
- }
- if (hash < prev_hash &&
- fix_problem(cd->ctx, PR_2_HTREE_HASH_ORDER, &cd->pctx))
- goto clear_and_exit;
- dx_db = &dx_dir->dx_block[blk];
- if (dx_db->flags & DX_FLAG_REFERENCED) {
- dx_db->flags |= DX_FLAG_DUP_REF;
- } else {
- dx_db->flags |= DX_FLAG_REFERENCED;
- dx_db->parent = db->blockcnt;
- }
- if (hash < min_hash)
- min_hash = hash;
- if (hash > max_hash)
- max_hash = hash;
- dx_db->node_min_hash = hash;
- if ((i+1) < count)
- dx_db->node_max_hash =
- ext2fs_le32_to_cpu(ent[i+1].hash) & ~1;
- else {
- dx_db->node_max_hash = 0xfffffffe;
- dx_db->flags |= DX_FLAG_LAST;
- }
- if (i == 0)
- dx_db->flags |= DX_FLAG_FIRST;
- }
- dx_db = &dx_dir->dx_block[db->blockcnt];
- dx_db->min_hash = min_hash;
- dx_db->max_hash = max_hash;
- return;
-
-clear_and_exit:
- clear_htree(cd->ctx, cd->pctx.ino);
- dx_dir->numblocks = 0;
-}
-#endif /* ENABLE_HTREE */
-
-/*
- * Given a busted directory, try to salvage it somehow.
- *
- */
-static void salvage_directory(ext2_filsys fs,
- struct ext2_dir_entry *dirent,
- struct ext2_dir_entry *prev,
- unsigned int *offset)
-{
- char *cp = (char *) dirent;
- int left = fs->blocksize - *offset - dirent->rec_len;
- int name_len = dirent->name_len & 0xFF;
-
- /*
- * Special case of directory entry of size 8: copy what's left
- * of the directory block up to cover up the invalid hole.
- */
- if ((left >= 12) && (dirent->rec_len == 8)) {
- memmove(cp, cp+8, left);
- memset(cp + left, 0, 8);
- return;
- }
- /*
- * If the directory entry overruns the end of the directory
- * block, and the name is small enough to fit, then adjust the
- * record length.
- */
- if ((left < 0) &&
- (name_len + 8 <= dirent->rec_len + left) &&
- dirent->inode <= fs->super->s_inodes_count &&
- strnlen(dirent->name, name_len) == name_len) {
- dirent->rec_len += left;
- return;
- }
- /*
- * If the directory entry is a multiple of four, so it is
- * valid, let the previous directory entry absorb the invalid
- * one.
- */
- if (prev && dirent->rec_len && (dirent->rec_len % 4) == 0) {
- prev->rec_len += dirent->rec_len;
- *offset += dirent->rec_len;
- return;
- }
- /*
- * Default salvage method --- kill all of the directory
- * entries for the rest of the block. We will either try to
- * absorb it into the previous directory entry, or create a
- * new empty directory entry the rest of the directory block.
- */
- if (prev) {
- prev->rec_len += fs->blocksize - *offset;
- *offset = fs->blocksize;
- } else {
- dirent->rec_len = fs->blocksize - *offset;
- dirent->name_len = 0;
- dirent->inode = 0;
- }
-}
-
-static int check_dir_block(ext2_filsys fs,
- struct ext2_db_entry *db,
- void *priv_data)
-{
- struct dir_info *subdir, *dir;
- struct dx_dir_info *dx_dir;
-#ifdef ENABLE_HTREE
- struct dx_dirblock_info *dx_db = 0;
-#endif /* ENABLE_HTREE */
- struct ext2_dir_entry *dirent, *prev;
- ext2_dirhash_t hash;
- unsigned int offset = 0;
- int dir_modified = 0;
- int dot_state;
- blk_t block_nr = db->blk;
- ext2_ino_t ino = db->ino;
- __u16 links;
- struct check_dir_struct *cd;
- char *buf;
- e2fsck_t ctx;
- int problem;
- struct ext2_dx_root_info *root;
- struct ext2_dx_countlimit *limit;
- static dict_t de_dict;
- struct problem_context pctx;
- int dups_found = 0;
-
- cd = (struct check_dir_struct *) priv_data;
- buf = cd->buf;
- ctx = cd->ctx;
-
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return DIRENT_ABORT;
-
- if (ctx->progress && (ctx->progress)(ctx, 2, cd->count++, cd->max))
- return DIRENT_ABORT;
-
- /*
- * Make sure the inode is still in use (could have been
- * deleted in the duplicate/bad blocks pass.
- */
- if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map, ino)))
- return 0;
-
- cd->pctx.ino = ino;
- cd->pctx.blk = block_nr;
- cd->pctx.blkcount = db->blockcnt;
- cd->pctx.ino2 = 0;
- cd->pctx.dirent = 0;
- cd->pctx.num = 0;
-
- if (db->blk == 0) {
- if (allocate_dir_block(ctx, db, &cd->pctx))
- return 0;
- block_nr = db->blk;
- }
-
- if (db->blockcnt)
- dot_state = 2;
- else
- dot_state = 0;
-
- if (ctx->dirs_to_hash &&
- ext2fs_u32_list_test(ctx->dirs_to_hash, ino))
- dups_found++;
-
- cd->pctx.errcode = ext2fs_read_dir_block(fs, block_nr, buf);
- if (cd->pctx.errcode == EXT2_ET_DIR_CORRUPTED)
- cd->pctx.errcode = 0; /* We'll handle this ourselves */
- if (cd->pctx.errcode) {
- if (!fix_problem(ctx, PR_2_READ_DIRBLOCK, &cd->pctx)) {
- ctx->flags |= E2F_FLAG_ABORT;
- return DIRENT_ABORT;
- }
- memset(buf, 0, fs->blocksize);
- }
-#ifdef ENABLE_HTREE
- dx_dir = e2fsck_get_dx_dir_info(ctx, ino);
- if (dx_dir && dx_dir->numblocks) {
- if (db->blockcnt >= dx_dir->numblocks) {
- printf("XXX should never happen!!!\n");
- abort();
- }
- dx_db = &dx_dir->dx_block[db->blockcnt];
- dx_db->type = DX_DIRBLOCK_LEAF;
- dx_db->phys = block_nr;
- dx_db->min_hash = ~0;
- dx_db->max_hash = 0;
-
- dirent = (struct ext2_dir_entry *) buf;
- limit = (struct ext2_dx_countlimit *) (buf+8);
- if (db->blockcnt == 0) {
- root = (struct ext2_dx_root_info *) (buf + 24);
- dx_db->type = DX_DIRBLOCK_ROOT;
- dx_db->flags |= DX_FLAG_FIRST | DX_FLAG_LAST;
- if ((root->reserved_zero ||
- root->info_length < 8 ||
- root->indirect_levels > 1) &&
- fix_problem(ctx, PR_2_HTREE_BAD_ROOT, &cd->pctx)) {
- clear_htree(ctx, ino);
- dx_dir->numblocks = 0;
- dx_db = 0;
- }
- dx_dir->hashversion = root->hash_version;
- dx_dir->depth = root->indirect_levels + 1;
- } else if ((dirent->inode == 0) &&
- (dirent->rec_len == fs->blocksize) &&
- (dirent->name_len == 0) &&
- (ext2fs_le16_to_cpu(limit->limit) ==
- ((fs->blocksize-8) /
- sizeof(struct ext2_dx_entry))))
- dx_db->type = DX_DIRBLOCK_NODE;
- }
-#endif /* ENABLE_HTREE */
-
- dict_init(&de_dict, DICTCOUNT_T_MAX, dict_de_cmp);
- prev = 0;
- do {
- problem = 0;
- dirent = (struct ext2_dir_entry *) (buf + offset);
- cd->pctx.dirent = dirent;
- cd->pctx.num = offset;
- if (((offset + dirent->rec_len) > fs->blocksize) ||
- (dirent->rec_len < 12) ||
- ((dirent->rec_len % 4) != 0) ||
- (((dirent->name_len & 0xFF)+8) > dirent->rec_len)) {
- if (fix_problem(ctx, PR_2_DIR_CORRUPTED, &cd->pctx)) {
- salvage_directory(fs, dirent, prev, &offset);
- dir_modified++;
- continue;
- } else
- goto abort_free_dict;
- }
- if ((dirent->name_len & 0xFF) > EXT2_NAME_LEN) {
- if (fix_problem(ctx, PR_2_FILENAME_LONG, &cd->pctx)) {
- dirent->name_len = EXT2_NAME_LEN;
- dir_modified++;
- }
- }
-
- if (dot_state == 0) {
- if (check_dot(ctx, dirent, ino, &cd->pctx))
- dir_modified++;
- } else if (dot_state == 1) {
- dir = e2fsck_get_dir_info(ctx, ino);
- if (!dir) {
- fix_problem(ctx, PR_2_NO_DIRINFO, &cd->pctx);
- goto abort_free_dict;
- }
- if (check_dotdot(ctx, dirent, dir, &cd->pctx))
- dir_modified++;
- } else if (dirent->inode == ino) {
- problem = PR_2_LINK_DOT;
- if (fix_problem(ctx, PR_2_LINK_DOT, &cd->pctx)) {
- dirent->inode = 0;
- dir_modified++;
- goto next;
- }
- }
- if (!dirent->inode)
- goto next;
-
- /*
- * Make sure the inode listed is a legal one.
- */
- if (((dirent->inode != EXT2_ROOT_INO) &&
- (dirent->inode < EXT2_FIRST_INODE(fs->super))) ||
- (dirent->inode > fs->super->s_inodes_count)) {
- problem = PR_2_BAD_INO;
- } else if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map,
- dirent->inode))) {
- /*
- * If the inode is unused, offer to clear it.
- */
- problem = PR_2_UNUSED_INODE;
- } else if ((dot_state > 1) &&
- ((dirent->name_len & 0xFF) == 1) &&
- (dirent->name[0] == '.')) {
- /*
- * If there's a '.' entry in anything other
- * than the first directory entry, it's a
- * duplicate entry that should be removed.
- */
- problem = PR_2_DUP_DOT;
- } else if ((dot_state > 1) &&
- ((dirent->name_len & 0xFF) == 2) &&
- (dirent->name[0] == '.') &&
- (dirent->name[1] == '.')) {
- /*
- * If there's a '..' entry in anything other
- * than the second directory entry, it's a
- * duplicate entry that should be removed.
- */
- problem = PR_2_DUP_DOT_DOT;
- } else if ((dot_state > 1) &&
- (dirent->inode == EXT2_ROOT_INO)) {
- /*
- * Don't allow links to the root directory.
- * We check this specially to make sure we
- * catch this error case even if the root
- * directory hasn't been created yet.
- */
- problem = PR_2_LINK_ROOT;
- } else if ((dot_state > 1) &&
- (dirent->name_len & 0xFF) == 0) {
- /*
- * Don't allow zero-length directory names.
- */
- problem = PR_2_NULL_NAME;
- }
-
- if (problem) {
- if (fix_problem(ctx, problem, &cd->pctx)) {
- dirent->inode = 0;
- dir_modified++;
- goto next;
- } else {
- ext2fs_unmark_valid(fs);
- if (problem == PR_2_BAD_INO)
- goto next;
- }
- }
-
- /*
- * If the inode was marked as having bad fields in
- * pass1, process it and offer to fix/clear it.
- * (We wait until now so that we can display the
- * pathname to the user.)
- */
- if (ctx->inode_bad_map &&
- ext2fs_test_inode_bitmap(ctx->inode_bad_map,
- dirent->inode)) {
- if (e2fsck_process_bad_inode(ctx, ino,
- dirent->inode,
- buf + fs->blocksize)) {
- dirent->inode = 0;
- dir_modified++;
- goto next;
- }
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return DIRENT_ABORT;
- }
-
- if (check_name(ctx, dirent, &cd->pctx))
- dir_modified++;
-
- if (check_filetype(ctx, dirent, &cd->pctx))
- dir_modified++;
-
-#ifdef ENABLE_HTREE
- if (dx_db) {
- ext2fs_dirhash(dx_dir->hashversion, dirent->name,
- (dirent->name_len & 0xFF),
- fs->super->s_hash_seed, &hash, 0);
- if (hash < dx_db->min_hash)
- dx_db->min_hash = hash;
- if (hash > dx_db->max_hash)
- dx_db->max_hash = hash;
- }
-#endif
-
- /*
- * If this is a directory, then mark its parent in its
- * dir_info structure. If the parent field is already
- * filled in, then this directory has more than one
- * hard link. We assume the first link is correct,
- * and ask the user if he/she wants to clear this one.
- */
- if ((dot_state > 1) &&
- (ext2fs_test_inode_bitmap(ctx->inode_dir_map,
- dirent->inode))) {
- subdir = e2fsck_get_dir_info(ctx, dirent->inode);
- if (!subdir) {
- cd->pctx.ino = dirent->inode;
- fix_problem(ctx, PR_2_NO_DIRINFO, &cd->pctx);
- goto abort_free_dict;
- }
- if (subdir->parent) {
- cd->pctx.ino2 = subdir->parent;
- if (fix_problem(ctx, PR_2_LINK_DIR,
- &cd->pctx)) {
- dirent->inode = 0;
- dir_modified++;
- goto next;
- }
- cd->pctx.ino2 = 0;
- } else
- subdir->parent = ino;
- }
-
- if (dups_found) {
- ;
- } else if (dict_lookup(&de_dict, dirent)) {
- clear_problem_context(&pctx);
- pctx.ino = ino;
- pctx.dirent = dirent;
- fix_problem(ctx, PR_2_REPORT_DUP_DIRENT, &pctx);
- if (!ctx->dirs_to_hash)
- ext2fs_u32_list_create(&ctx->dirs_to_hash, 50);
- if (ctx->dirs_to_hash)
- ext2fs_u32_list_add(ctx->dirs_to_hash, ino);
- dups_found++;
- } else
- dict_alloc_insert(&de_dict, dirent, dirent);
-
- ext2fs_icount_increment(ctx->inode_count, dirent->inode,
- &links);
- if (links > 1)
- ctx->fs_links_count++;
- ctx->fs_total_count++;
- next:
- prev = dirent;
- offset += dirent->rec_len;
- dot_state++;
- } while (offset < fs->blocksize);
-#ifdef ENABLE_HTREE
- if (dx_db) {
- cd->pctx.dir = cd->pctx.ino;
- if ((dx_db->type == DX_DIRBLOCK_ROOT) ||
- (dx_db->type == DX_DIRBLOCK_NODE))
- parse_int_node(fs, db, cd, dx_dir, buf);
- }
-#endif /* ENABLE_HTREE */
- if (offset != fs->blocksize) {
- cd->pctx.num = dirent->rec_len - fs->blocksize + offset;
- if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) {
- dirent->rec_len = cd->pctx.num;
- dir_modified++;
- }
- }
- if (dir_modified) {
- cd->pctx.errcode = ext2fs_write_dir_block(fs, block_nr, buf);
- if (cd->pctx.errcode) {
- if (!fix_problem(ctx, PR_2_WRITE_DIRBLOCK,
- &cd->pctx))
- goto abort_free_dict;
- }
- ext2fs_mark_changed(fs);
- }
- dict_free_nodes(&de_dict);
- return 0;
-abort_free_dict:
- dict_free_nodes(&de_dict);
- ctx->flags |= E2F_FLAG_ABORT;
- return DIRENT_ABORT;
-}
-
-/*
- * This function is called to deallocate a block, and is an interator
- * functioned called by deallocate inode via ext2fs_iterate_block().
- */
-static int deallocate_inode_block(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt FSCK_ATTR((unused)),
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- e2fsck_t ctx = (e2fsck_t) priv_data;
-
- if (HOLE_BLKADDR(*block_nr))
- return 0;
- if ((*block_nr < fs->super->s_first_data_block) ||
- (*block_nr >= fs->super->s_blocks_count))
- return 0;
- ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr);
- ext2fs_block_alloc_stats(fs, *block_nr, -1);
- return 0;
-}
-
-/*
- * This fuction deallocates an inode
- */
-static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf)
-{
- ext2_filsys fs = ctx->fs;
- struct ext2_inode inode;
- struct problem_context pctx;
- __u32 count;
-
- ext2fs_icount_store(ctx->inode_link_info, ino, 0);
- e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode");
- inode.i_links_count = 0;
- inode.i_dtime = time(0);
- e2fsck_write_inode(ctx, ino, &inode, "deallocate_inode");
- clear_problem_context(&pctx);
- pctx.ino = ino;
-
- /*
- * Fix up the bitmaps...
- */
- e2fsck_read_bitmaps(ctx);
- ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
- ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
- if (ctx->inode_bad_map)
- ext2fs_unmark_inode_bitmap(ctx->inode_bad_map, ino);
- ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(inode.i_mode));
-
- if (inode.i_file_acl &&
- (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) {
- pctx.errcode = ext2fs_adjust_ea_refcount(fs, inode.i_file_acl,
- block_buf, -1, &count);
- if (pctx.errcode == EXT2_ET_BAD_EA_BLOCK_NUM) {
- pctx.errcode = 0;
- count = 1;
- }
- if (pctx.errcode) {
- pctx.blk = inode.i_file_acl;
- fix_problem(ctx, PR_2_ADJ_EA_REFCOUNT, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if (count == 0) {
- ext2fs_unmark_block_bitmap(ctx->block_found_map,
- inode.i_file_acl);
- ext2fs_block_alloc_stats(fs, inode.i_file_acl, -1);
- }
- inode.i_file_acl = 0;
- }
-
- if (!ext2fs_inode_has_valid_blocks(&inode))
- return;
-
- if (LINUX_S_ISREG(inode.i_mode) &&
- (inode.i_size_high || inode.i_size & 0x80000000UL))
- ctx->large_files--;
-
- pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf,
- deallocate_inode_block, ctx);
- if (pctx.errcode) {
- fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-}
-
-/*
- * This fuction clears the htree flag on an inode
- */
-static void clear_htree(e2fsck_t ctx, ext2_ino_t ino)
-{
- struct ext2_inode inode;
-
- e2fsck_read_inode(ctx, ino, &inode, "clear_htree");
- inode.i_flags = inode.i_flags & ~EXT2_INDEX_FL;
- e2fsck_write_inode(ctx, ino, &inode, "clear_htree");
- if (ctx->dirs_to_hash)
- ext2fs_u32_list_add(ctx->dirs_to_hash, ino);
-}
-
-
-static int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir,
- ext2_ino_t ino, char *buf)
-{
- ext2_filsys fs = ctx->fs;
- struct ext2_inode inode;
- int inode_modified = 0;
- int not_fixed = 0;
- unsigned char *frag, *fsize;
- struct problem_context pctx;
- int problem = 0;
-
- e2fsck_read_inode(ctx, ino, &inode, "process_bad_inode");
-
- clear_problem_context(&pctx);
- pctx.ino = ino;
- pctx.dir = dir;
- pctx.inode = &inode;
-
- if (inode.i_file_acl &&
- !(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) &&
- fix_problem(ctx, PR_2_FILE_ACL_ZERO, &pctx)) {
- inode.i_file_acl = 0;
-#if BB_BIG_ENDIAN
- /*
- * This is a special kludge to deal with long symlinks
- * on big endian systems. i_blocks had already been
- * decremented earlier in pass 1, but since i_file_acl
- * hadn't yet been cleared, ext2fs_read_inode()
- * assumed that the file was short symlink and would
- * not have byte swapped i_block[0]. Hence, we have
- * to byte-swap it here.
- */
- if (LINUX_S_ISLNK(inode.i_mode) &&
- (fs->flags & EXT2_FLAG_SWAP_BYTES) &&
- (inode.i_blocks == fs->blocksize >> 9))
- inode.i_block[0] = ext2fs_swab32(inode.i_block[0]);
-#endif
- inode_modified++;
- } else
- not_fixed++;
-
- if (!LINUX_S_ISDIR(inode.i_mode) && !LINUX_S_ISREG(inode.i_mode) &&
- !LINUX_S_ISCHR(inode.i_mode) && !LINUX_S_ISBLK(inode.i_mode) &&
- !LINUX_S_ISLNK(inode.i_mode) && !LINUX_S_ISFIFO(inode.i_mode) &&
- !(LINUX_S_ISSOCK(inode.i_mode)))
- problem = PR_2_BAD_MODE;
- else if (LINUX_S_ISCHR(inode.i_mode)
- && !e2fsck_pass1_check_device_inode(fs, &inode))
- problem = PR_2_BAD_CHAR_DEV;
- else if (LINUX_S_ISBLK(inode.i_mode)
- && !e2fsck_pass1_check_device_inode(fs, &inode))
- problem = PR_2_BAD_BLOCK_DEV;
- else if (LINUX_S_ISFIFO(inode.i_mode)
- && !e2fsck_pass1_check_device_inode(fs, &inode))
- problem = PR_2_BAD_FIFO;
- else if (LINUX_S_ISSOCK(inode.i_mode)
- && !e2fsck_pass1_check_device_inode(fs, &inode))
- problem = PR_2_BAD_SOCKET;
- else if (LINUX_S_ISLNK(inode.i_mode)
- && !e2fsck_pass1_check_symlink(fs, &inode, buf)) {
- problem = PR_2_INVALID_SYMLINK;
- }
-
- if (problem) {
- if (fix_problem(ctx, problem, &pctx)) {
- deallocate_inode(ctx, ino, 0);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return 0;
- return 1;
- } else
- not_fixed++;
- problem = 0;
- }
-
- if (inode.i_faddr) {
- if (fix_problem(ctx, PR_2_FADDR_ZERO, &pctx)) {
- inode.i_faddr = 0;
- inode_modified++;
- } else
- not_fixed++;
- }
-
- switch (fs->super->s_creator_os) {
- case EXT2_OS_LINUX:
- frag = &inode.osd2.linux2.l_i_frag;
- fsize = &inode.osd2.linux2.l_i_fsize;
- break;
- case EXT2_OS_HURD:
- frag = &inode.osd2.hurd2.h_i_frag;
- fsize = &inode.osd2.hurd2.h_i_fsize;
- break;
- case EXT2_OS_MASIX:
- frag = &inode.osd2.masix2.m_i_frag;
- fsize = &inode.osd2.masix2.m_i_fsize;
- break;
- default:
- frag = fsize = 0;
- }
- if (frag && *frag) {
- pctx.num = *frag;
- if (fix_problem(ctx, PR_2_FRAG_ZERO, &pctx)) {
- *frag = 0;
- inode_modified++;
- } else
- not_fixed++;
- pctx.num = 0;
- }
- if (fsize && *fsize) {
- pctx.num = *fsize;
- if (fix_problem(ctx, PR_2_FSIZE_ZERO, &pctx)) {
- *fsize = 0;
- inode_modified++;
- } else
- not_fixed++;
- pctx.num = 0;
- }
-
- if (inode.i_file_acl &&
- ((inode.i_file_acl < fs->super->s_first_data_block) ||
- (inode.i_file_acl >= fs->super->s_blocks_count))) {
- if (fix_problem(ctx, PR_2_FILE_ACL_BAD, &pctx)) {
- inode.i_file_acl = 0;
- inode_modified++;
- } else
- not_fixed++;
- }
- if (inode.i_dir_acl &&
- LINUX_S_ISDIR(inode.i_mode)) {
- if (fix_problem(ctx, PR_2_DIR_ACL_ZERO, &pctx)) {
- inode.i_dir_acl = 0;
- inode_modified++;
- } else
- not_fixed++;
- }
-
- if (inode_modified)
- e2fsck_write_inode(ctx, ino, &inode, "process_bad_inode");
- if (!not_fixed)
- ext2fs_unmark_inode_bitmap(ctx->inode_bad_map, ino);
- return 0;
-}
-
-
-/*
- * allocate_dir_block --- this function allocates a new directory
- * block for a particular inode; this is done if a directory has
- * a "hole" in it, or if a directory has a illegal block number
- * that was zeroed out and now needs to be replaced.
- */
-static int allocate_dir_block(e2fsck_t ctx, struct ext2_db_entry *db,
- struct problem_context *pctx)
-{
- ext2_filsys fs = ctx->fs;
- blk_t blk;
- char *block;
- struct ext2_inode inode;
-
- if (fix_problem(ctx, PR_2_DIRECTORY_HOLE, pctx) == 0)
- return 1;
-
- /*
- * Read the inode and block bitmaps in; we'll be messing with
- * them.
- */
- e2fsck_read_bitmaps(ctx);
-
- /*
- * First, find a free block
- */
- pctx->errcode = ext2fs_new_block(fs, 0, ctx->block_found_map, &blk);
- if (pctx->errcode) {
- pctx->str = "ext2fs_new_block";
- fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
- return 1;
- }
- ext2fs_mark_block_bitmap(ctx->block_found_map, blk);
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- ext2fs_mark_bb_dirty(fs);
-
- /*
- * Now let's create the actual data block for the inode
- */
- if (db->blockcnt)
- pctx->errcode = ext2fs_new_dir_block(fs, 0, 0, &block);
- else
- pctx->errcode = ext2fs_new_dir_block(fs, db->ino,
- EXT2_ROOT_INO, &block);
-
- if (pctx->errcode) {
- pctx->str = "ext2fs_new_dir_block";
- fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
- return 1;
- }
-
- pctx->errcode = ext2fs_write_dir_block(fs, blk, block);
- ext2fs_free_mem(&block);
- if (pctx->errcode) {
- pctx->str = "ext2fs_write_dir_block";
- fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
- return 1;
- }
-
- /*
- * Update the inode block count
- */
- e2fsck_read_inode(ctx, db->ino, &inode, "allocate_dir_block");
- inode.i_blocks += fs->blocksize / 512;
- if (inode.i_size < (db->blockcnt+1) * fs->blocksize)
- inode.i_size = (db->blockcnt+1) * fs->blocksize;
- e2fsck_write_inode(ctx, db->ino, &inode, "allocate_dir_block");
-
- /*
- * Finally, update the block pointers for the inode
- */
- db->blk = blk;
- pctx->errcode = ext2fs_block_iterate2(fs, db->ino, BLOCK_FLAG_HOLE,
- 0, update_dir_block, db);
- if (pctx->errcode) {
- pctx->str = "ext2fs_block_iterate";
- fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
- return 1;
- }
-
- return 0;
-}
-
-/*
- * This is a helper function for allocate_dir_block().
- */
-static int update_dir_block(ext2_filsys fs FSCK_ATTR((unused)),
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct ext2_db_entry *db;
-
- db = (struct ext2_db_entry *) priv_data;
- if (db->blockcnt == (int) blockcnt) {
- *block_nr = db->blk;
- return BLOCK_CHANGED;
- }
- return 0;
-}
-
-/*
- * pass3.c -- pass #3 of e2fsck: Check for directory connectivity
- *
- * Pass #3 assures that all directories are connected to the
- * filesystem tree, using the following algorithm:
- *
- * First, the root directory is checked to make sure it exists; if
- * not, e2fsck will offer to create a new one. It is then marked as
- * "done".
- *
- * Then, pass3 interates over all directory inodes; for each directory
- * it attempts to trace up the filesystem tree, using dirinfo.parent
- * until it reaches a directory which has been marked "done". If it
- * cannot do so, then the directory must be disconnected, and e2fsck
- * will offer to reconnect it to /lost+found. While it is chasing
- * parent pointers up the filesystem tree, if pass3 sees a directory
- * twice, then it has detected a filesystem loop, and it will again
- * offer to reconnect the directory to /lost+found in to break the
- * filesystem loop.
- *
- * Pass 3 also contains the subroutine, e2fsck_reconnect_file() to
- * reconnect inodes to /lost+found; this subroutine is also used by
- * pass 4. e2fsck_reconnect_file() calls get_lost_and_found(), which
- * is responsible for creating /lost+found if it does not exist.
- *
- * Pass 3 frees the following data structures:
- * - The dirinfo directory information cache.
- */
-
-static void check_root(e2fsck_t ctx);
-static int check_directory(e2fsck_t ctx, struct dir_info *dir,
- struct problem_context *pctx);
-static void fix_dotdot(e2fsck_t ctx, struct dir_info *dir, ext2_ino_t parent);
-
-static ext2fs_inode_bitmap inode_loop_detect;
-static ext2fs_inode_bitmap inode_done_map;
-
-static void e2fsck_pass3(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- int i;
- struct problem_context pctx;
- struct dir_info *dir;
- unsigned long maxdirs, count;
-
- clear_problem_context(&pctx);
-
- /* Pass 3 */
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_3_PASS_HEADER, &pctx);
-
- /*
- * Allocate some bitmaps to do loop detection.
- */
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("inode done bitmap"),
- &inode_done_map);
- if (pctx.errcode) {
- pctx.num = 2;
- fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- goto abort_exit;
- }
- check_root(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- goto abort_exit;
-
- ext2fs_mark_inode_bitmap(inode_done_map, EXT2_ROOT_INO);
-
- maxdirs = e2fsck_get_num_dirinfo(ctx);
- count = 1;
-
- if (ctx->progress)
- if ((ctx->progress)(ctx, 3, 0, maxdirs))
- goto abort_exit;
-
- for (i=0; (dir = e2fsck_dir_info_iter(ctx, &i)) != 0;) {
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- goto abort_exit;
- if (ctx->progress && (ctx->progress)(ctx, 3, count++, maxdirs))
- goto abort_exit;
- if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, dir->ino))
- if (check_directory(ctx, dir, &pctx))
- goto abort_exit;
- }
-
- /*
- * Force the creation of /lost+found if not present
- */
- if ((ctx->flags & E2F_OPT_READONLY) == 0)
- e2fsck_get_lost_and_found(ctx, 1);
-
- /*
- * If there are any directories that need to be indexed or
- * optimized, do it here.
- */
- e2fsck_rehash_directories(ctx);
-
-abort_exit:
- e2fsck_free_dir_info(ctx);
- ext2fs_free_inode_bitmap(inode_loop_detect);
- inode_loop_detect = 0;
- ext2fs_free_inode_bitmap(inode_done_map);
- inode_done_map = 0;
-}
-
-/*
- * This makes sure the root inode is present; if not, we ask if the
- * user wants us to create it. Not creating it is a fatal error.
- */
-static void check_root(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- blk_t blk;
- struct ext2_inode inode;
- char * block;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- if (ext2fs_test_inode_bitmap(ctx->inode_used_map, EXT2_ROOT_INO)) {
- /*
- * If the root inode is not a directory, die here. The
- * user must have answered 'no' in pass1 when we
- * offered to clear it.
- */
- if (!(ext2fs_test_inode_bitmap(ctx->inode_dir_map,
- EXT2_ROOT_INO))) {
- fix_problem(ctx, PR_3_ROOT_NOT_DIR_ABORT, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- }
- return;
- }
-
- if (!fix_problem(ctx, PR_3_NO_ROOT_INODE, &pctx)) {
- fix_problem(ctx, PR_3_NO_ROOT_INODE_ABORT, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- e2fsck_read_bitmaps(ctx);
-
- /*
- * First, find a free block
- */
- pctx.errcode = ext2fs_new_block(fs, 0, ctx->block_found_map, &blk);
- if (pctx.errcode) {
- pctx.str = "ext2fs_new_block";
- fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ext2fs_mark_block_bitmap(ctx->block_found_map, blk);
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- ext2fs_mark_bb_dirty(fs);
-
- /*
- * Now let's create the actual data block for the inode
- */
- pctx.errcode = ext2fs_new_dir_block(fs, EXT2_ROOT_INO, EXT2_ROOT_INO,
- &block);
- if (pctx.errcode) {
- pctx.str = "ext2fs_new_dir_block";
- fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- pctx.errcode = ext2fs_write_dir_block(fs, blk, block);
- if (pctx.errcode) {
- pctx.str = "ext2fs_write_dir_block";
- fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ext2fs_free_mem(&block);
-
- /*
- * Set up the inode structure
- */
- memset(&inode, 0, sizeof(inode));
- inode.i_mode = 040755;
- inode.i_size = fs->blocksize;
- inode.i_atime = inode.i_ctime = inode.i_mtime = time(0);
- inode.i_links_count = 2;
- inode.i_blocks = fs->blocksize / 512;
- inode.i_block[0] = blk;
-
- /*
- * Write out the inode.
- */
- pctx.errcode = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
- if (pctx.errcode) {
- pctx.str = "ext2fs_write_inode";
- fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- /*
- * Miscellaneous bookkeeping...
- */
- e2fsck_add_dir_info(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);
- ext2fs_icount_store(ctx->inode_count, EXT2_ROOT_INO, 2);
- ext2fs_icount_store(ctx->inode_link_info, EXT2_ROOT_INO, 2);
-
- ext2fs_mark_inode_bitmap(ctx->inode_used_map, EXT2_ROOT_INO);
- ext2fs_mark_inode_bitmap(ctx->inode_dir_map, EXT2_ROOT_INO);
- ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_ROOT_INO);
- ext2fs_mark_ib_dirty(fs);
-}
-
-/*
- * This subroutine is responsible for making sure that a particular
- * directory is connected to the root; if it isn't we trace it up as
- * far as we can go, and then offer to connect the resulting parent to
- * the lost+found. We have to do loop detection; if we ever discover
- * a loop, we treat that as a disconnected directory and offer to
- * reparent it to lost+found.
- *
- * However, loop detection is expensive, because for very large
- * filesystems, the inode_loop_detect bitmap is huge, and clearing it
- * is non-trivial. Loops in filesystems are also a rare error case,
- * and we shouldn't optimize for error cases. So we try two passes of
- * the algorithm. The first time, we ignore loop detection and merely
- * increment a counter; if the counter exceeds some extreme threshold,
- * then we try again with the loop detection bitmap enabled.
- */
-static int check_directory(e2fsck_t ctx, struct dir_info *dir,
- struct problem_context *pctx)
-{
- ext2_filsys fs = ctx->fs;
- struct dir_info *p = dir;
- int loop_pass = 0, parent_count = 0;
-
- if (!p)
- return 0;
-
- while (1) {
- /*
- * Mark this inode as being "done"; by the time we
- * return from this function, the inode we either be
- * verified as being connected to the directory tree,
- * or we will have offered to reconnect this to
- * lost+found.
- *
- * If it was marked done already, then we've reached a
- * parent we've already checked.
- */
- if (ext2fs_mark_inode_bitmap(inode_done_map, p->ino))
- break;
-
- /*
- * If this directory doesn't have a parent, or we've
- * seen the parent once already, then offer to
- * reparent it to lost+found
- */
- if (!p->parent ||
- (loop_pass &&
- (ext2fs_test_inode_bitmap(inode_loop_detect,
- p->parent)))) {
- pctx->ino = p->ino;
- if (fix_problem(ctx, PR_3_UNCONNECTED_DIR, pctx)) {
- if (e2fsck_reconnect_file(ctx, pctx->ino))
- ext2fs_unmark_valid(fs);
- else {
- p = e2fsck_get_dir_info(ctx, pctx->ino);
- p->parent = ctx->lost_and_found;
- fix_dotdot(ctx, p, ctx->lost_and_found);
- }
- }
- break;
- }
- p = e2fsck_get_dir_info(ctx, p->parent);
- if (!p) {
- fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
- return 0;
- }
- if (loop_pass) {
- ext2fs_mark_inode_bitmap(inode_loop_detect,
- p->ino);
- } else if (parent_count++ > 2048) {
- /*
- * If we've run into a path depth that's
- * greater than 2048, try again with the inode
- * loop bitmap turned on and start from the
- * top.
- */
- loop_pass = 1;
- if (inode_loop_detect)
- ext2fs_clear_inode_bitmap(inode_loop_detect);
- else {
- pctx->errcode = ext2fs_allocate_inode_bitmap(fs, _("inode loop detection bitmap"), &inode_loop_detect);
- if (pctx->errcode) {
- pctx->num = 1;
- fix_problem(ctx,
- PR_3_ALLOCATE_IBITMAP_ERROR, pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return -1;
- }
- }
- p = dir;
- }
- }
-
- /*
- * Make sure that .. and the parent directory are the same;
- * offer to fix it if not.
- */
- if (dir->parent != dir->dotdot) {
- pctx->ino = dir->ino;
- pctx->ino2 = dir->dotdot;
- pctx->dir = dir->parent;
- if (fix_problem(ctx, PR_3_BAD_DOT_DOT, pctx))
- fix_dotdot(ctx, dir, dir->parent);
- }
- return 0;
-}
-
-/*
- * This routine gets the lost_and_found inode, making it a directory
- * if necessary
- */
-ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t ino;
- blk_t blk;
- errcode_t retval;
- struct ext2_inode inode;
- char * block;
- static const char name[] = "lost+found";
- struct problem_context pctx;
- struct dir_info *dirinfo;
-
- if (ctx->lost_and_found)
- return ctx->lost_and_found;
-
- clear_problem_context(&pctx);
-
- retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
- sizeof(name)-1, 0, &ino);
- if (retval && !fix)
- return 0;
- if (!retval) {
- if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, ino)) {
- ctx->lost_and_found = ino;
- return ino;
- }
-
- /* Lost+found isn't a directory! */
- if (!fix)
- return 0;
- pctx.ino = ino;
- if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
- return 0;
-
- /* OK, unlink the old /lost+found file. */
- pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
- if (pctx.errcode) {
- pctx.str = "ext2fs_unlink";
- fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
- return 0;
- }
- dirinfo = e2fsck_get_dir_info(ctx, ino);
- if (dirinfo)
- dirinfo->parent = 0;
- e2fsck_adjust_inode_count(ctx, ino, -1);
- } else if (retval != EXT2_ET_FILE_NOT_FOUND) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
- }
- if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
- return 0;
-
- /*
- * Read the inode and block bitmaps in; we'll be messing with
- * them.
- */
- e2fsck_read_bitmaps(ctx);
-
- /*
- * First, find a free block
- */
- retval = ext2fs_new_block(fs, 0, ctx->block_found_map, &blk);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
- return 0;
- }
- ext2fs_mark_block_bitmap(ctx->block_found_map, blk);
- ext2fs_block_alloc_stats(fs, blk, +1);
-
- /*
- * Next find a free inode.
- */
- retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
- ctx->inode_used_map, &ino);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
- return 0;
- }
- ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
- ext2fs_mark_inode_bitmap(ctx->inode_dir_map, ino);
- ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
-
- /*
- * Now let's create the actual data block for the inode
- */
- retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
- return 0;
- }
-
- retval = ext2fs_write_dir_block(fs, blk, block);
- ext2fs_free_mem(&block);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
- return 0;
- }
-
- /*
- * Set up the inode structure
- */
- memset(&inode, 0, sizeof(inode));
- inode.i_mode = 040700;
- inode.i_size = fs->blocksize;
- inode.i_atime = inode.i_ctime = inode.i_mtime = time(0);
- inode.i_links_count = 2;
- inode.i_blocks = fs->blocksize / 512;
- inode.i_block[0] = blk;
-
- /*
- * Next, write out the inode.
- */
- pctx.errcode = ext2fs_write_new_inode(fs, ino, &inode);
- if (pctx.errcode) {
- pctx.str = "ext2fs_write_inode";
- fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
- return 0;
- }
- /*
- * Finally, create the directory link
- */
- pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
- if (pctx.errcode) {
- pctx.str = "ext2fs_link";
- fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
- return 0;
- }
-
- /*
- * Miscellaneous bookkeeping that needs to be kept straight.
- */
- e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
- e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
- ext2fs_icount_store(ctx->inode_count, ino, 2);
- ext2fs_icount_store(ctx->inode_link_info, ino, 2);
- ctx->lost_and_found = ino;
- return ino;
-}
-
-/*
- * This routine will connect a file to lost+found
- */
-int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t ino)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- char name[80];
- struct problem_context pctx;
- struct ext2_inode inode;
- int file_type = 0;
-
- clear_problem_context(&pctx);
- pctx.ino = ino;
-
- if (!ctx->bad_lost_and_found && !ctx->lost_and_found) {
- if (e2fsck_get_lost_and_found(ctx, 1) == 0)
- ctx->bad_lost_and_found++;
- }
- if (ctx->bad_lost_and_found) {
- fix_problem(ctx, PR_3_NO_LPF, &pctx);
- return 1;
- }
-
- sprintf(name, "#%u", ino);
- if (ext2fs_read_inode(fs, ino, &inode) == 0)
- file_type = ext2_file_type(inode.i_mode);
- retval = ext2fs_link(fs, ctx->lost_and_found, name, ino, file_type);
- if (retval == EXT2_ET_DIR_NO_SPACE) {
- if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx))
- return 1;
- retval = e2fsck_expand_directory(ctx, ctx->lost_and_found,
- 1, 0);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx);
- return 1;
- }
- retval = ext2fs_link(fs, ctx->lost_and_found, name,
- ino, file_type);
- }
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx);
- return 1;
- }
- e2fsck_adjust_inode_count(ctx, ino, 1);
-
- return 0;
-}
-
-/*
- * Utility routine to adjust the inode counts on an inode.
- */
-errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino, int adj)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- struct ext2_inode inode;
-
- if (!ino)
- return 0;
-
- retval = ext2fs_read_inode(fs, ino, &inode);
- if (retval)
- return retval;
-
- if (adj == 1) {
- ext2fs_icount_increment(ctx->inode_count, ino, 0);
- if (inode.i_links_count == (__u16) ~0)
- return 0;
- ext2fs_icount_increment(ctx->inode_link_info, ino, 0);
- inode.i_links_count++;
- } else if (adj == -1) {
- ext2fs_icount_decrement(ctx->inode_count, ino, 0);
- if (inode.i_links_count == 0)
- return 0;
- ext2fs_icount_decrement(ctx->inode_link_info, ino, 0);
- inode.i_links_count--;
- }
-
- retval = ext2fs_write_inode(fs, ino, &inode);
- if (retval)
- return retval;
-
- return 0;
-}
-
-/*
- * Fix parent --- this routine fixes up the parent of a directory.
- */
-struct fix_dotdot_struct {
- ext2_filsys fs;
- ext2_ino_t parent;
- int done;
- e2fsck_t ctx;
-};
-
-static int fix_dotdot_proc(struct ext2_dir_entry *dirent,
- int offset FSCK_ATTR((unused)),
- int blocksize FSCK_ATTR((unused)),
- char *buf FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct fix_dotdot_struct *fp = (struct fix_dotdot_struct *) priv_data;
- errcode_t retval;
- struct problem_context pctx;
-
- if ((dirent->name_len & 0xFF) != 2)
- return 0;
- if (strncmp(dirent->name, "..", 2))
- return 0;
-
- clear_problem_context(&pctx);
-
- retval = e2fsck_adjust_inode_count(fp->ctx, dirent->inode, -1);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
- }
- retval = e2fsck_adjust_inode_count(fp->ctx, fp->parent, 1);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
- }
- dirent->inode = fp->parent;
-
- fp->done++;
- return DIRENT_ABORT | DIRENT_CHANGED;
-}
-
-static void fix_dotdot(e2fsck_t ctx, struct dir_info *dir, ext2_ino_t parent)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- struct fix_dotdot_struct fp;
- struct problem_context pctx;
-
- fp.fs = fs;
- fp.parent = parent;
- fp.done = 0;
- fp.ctx = ctx;
-
- retval = ext2fs_dir_iterate(fs, dir->ino, DIRENT_FLAG_INCLUDE_EMPTY,
- 0, fix_dotdot_proc, &fp);
- if (retval || !fp.done) {
- clear_problem_context(&pctx);
- pctx.ino = dir->ino;
- pctx.errcode = retval;
- fix_problem(ctx, retval ? PR_3_FIX_PARENT_ERR :
- PR_3_FIX_PARENT_NOFIND, &pctx);
- ext2fs_unmark_valid(fs);
- }
- dir->dotdot = parent;
-
- return;
-}
-
-/*
- * These routines are responsible for expanding a /lost+found if it is
- * too small.
- */
-
-struct expand_dir_struct {
- int num;
- int guaranteed_size;
- int newblocks;
- int last_block;
- errcode_t err;
- e2fsck_t ctx;
-};
-
-static int expand_dir_proc(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data;
- blk_t new_blk;
- static blk_t last_blk = 0;
- char *block;
- errcode_t retval;
- e2fsck_t ctx;
-
- ctx = es->ctx;
-
- if (es->guaranteed_size && blockcnt >= es->guaranteed_size)
- return BLOCK_ABORT;
-
- if (blockcnt > 0)
- es->last_block = blockcnt;
- if (*blocknr) {
- last_blk = *blocknr;
- return 0;
- }
- retval = ext2fs_new_block(fs, last_blk, ctx->block_found_map,
- &new_blk);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- if (blockcnt > 0) {
- retval = ext2fs_new_dir_block(fs, 0, 0, &block);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- es->num--;
- retval = ext2fs_write_dir_block(fs, new_blk, block);
- } else {
- retval = ext2fs_get_mem(fs->blocksize, &block);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- memset(block, 0, fs->blocksize);
- retval = io_channel_write_blk(fs->io, new_blk, 1, block);
- }
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- ext2fs_free_mem(&block);
- *blocknr = new_blk;
- ext2fs_mark_block_bitmap(ctx->block_found_map, new_blk);
- ext2fs_block_alloc_stats(fs, new_blk, +1);
- es->newblocks++;
-
- if (es->num == 0)
- return (BLOCK_CHANGED | BLOCK_ABORT);
- else
- return BLOCK_CHANGED;
-}
-
-errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
- int num, int guaranteed_size)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- struct expand_dir_struct es;
- struct ext2_inode inode;
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
-
- /*
- * Read the inode and block bitmaps in; we'll be messing with
- * them.
- */
- e2fsck_read_bitmaps(ctx);
-
- retval = ext2fs_check_directory(fs, dir);
- if (retval)
- return retval;
-
- es.num = num;
- es.guaranteed_size = guaranteed_size;
- es.last_block = 0;
- es.err = 0;
- es.newblocks = 0;
- es.ctx = ctx;
-
- retval = ext2fs_block_iterate2(fs, dir, BLOCK_FLAG_APPEND,
- 0, expand_dir_proc, &es);
-
- if (es.err)
- return es.err;
-
- /*
- * Update the size and block count fields in the inode.
- */
- retval = ext2fs_read_inode(fs, dir, &inode);
- if (retval)
- return retval;
-
- inode.i_size = (es.last_block + 1) * fs->blocksize;
- inode.i_blocks += (fs->blocksize / 512) * es.newblocks;
-
- e2fsck_write_inode(ctx, dir, &inode, "expand_directory");
-
- return 0;
-}
-
-/*
- * pass4.c -- pass #4 of e2fsck: Check reference counts
- *
- * Pass 4 frees the following data structures:
- * - A bitmap of which inodes are imagic inodes. (inode_imagic_map)
- */
-
-/*
- * This routine is called when an inode is not connected to the
- * directory tree.
- *
- * This subroutine returns 1 then the caller shouldn't bother with the
- * rest of the pass 4 tests.
- */
-static int disconnect_inode(e2fsck_t ctx, ext2_ino_t i)
-{
- ext2_filsys fs = ctx->fs;
- struct ext2_inode inode;
- struct problem_context pctx;
-
- e2fsck_read_inode(ctx, i, &inode, "pass4: disconnect_inode");
- clear_problem_context(&pctx);
- pctx.ino = i;
- pctx.inode = &inode;
-
- /*
- * Offer to delete any zero-length files that does not have
- * blocks. If there is an EA block, it might have useful
- * information, so we won't prompt to delete it, but let it be
- * reconnected to lost+found.
- */
- if (!inode.i_blocks && (LINUX_S_ISREG(inode.i_mode) ||
- LINUX_S_ISDIR(inode.i_mode))) {
- if (fix_problem(ctx, PR_4_ZERO_LEN_INODE, &pctx)) {
- ext2fs_icount_store(ctx->inode_link_info, i, 0);
- inode.i_links_count = 0;
- inode.i_dtime = time(0);
- e2fsck_write_inode(ctx, i, &inode,
- "disconnect_inode");
- /*
- * Fix up the bitmaps...
- */
- e2fsck_read_bitmaps(ctx);
- ext2fs_unmark_inode_bitmap(ctx->inode_used_map, i);
- ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, i);
- ext2fs_inode_alloc_stats2(fs, i, -1,
- LINUX_S_ISDIR(inode.i_mode));
- return 0;
- }
- }
-
- /*
- * Prompt to reconnect.
- */
- if (fix_problem(ctx, PR_4_UNATTACHED_INODE, &pctx)) {
- if (e2fsck_reconnect_file(ctx, i))
- ext2fs_unmark_valid(fs);
- } else {
- /*
- * If we don't attach the inode, then skip the
- * i_links_test since there's no point in trying to
- * force i_links_count to zero.
- */
- ext2fs_unmark_valid(fs);
- return 1;
- }
- return 0;
-}
-
-
-static void e2fsck_pass4(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t i;
- struct ext2_inode inode;
- struct problem_context pctx;
- __u16 link_count, link_counted;
- char *buf = 0;
- int group, maxgroup;
-
- /* Pass 4 */
-
- clear_problem_context(&pctx);
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_4_PASS_HEADER, &pctx);
-
- group = 0;
- maxgroup = fs->group_desc_count;
- if (ctx->progress)
- if ((ctx->progress)(ctx, 4, 0, maxgroup))
- return;
-
- for (i=1; i <= fs->super->s_inodes_count; i++) {
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- if ((i % fs->super->s_inodes_per_group) == 0) {
- group++;
- if (ctx->progress)
- if ((ctx->progress)(ctx, 4, group, maxgroup))
- return;
- }
- if (i == EXT2_BAD_INO ||
- (i > EXT2_ROOT_INO && i < EXT2_FIRST_INODE(fs->super)))
- continue;
- if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map, i)) ||
- (ctx->inode_imagic_map &&
- ext2fs_test_inode_bitmap(ctx->inode_imagic_map, i)))
- continue;
- ext2fs_icount_fetch(ctx->inode_link_info, i, &link_count);
- ext2fs_icount_fetch(ctx->inode_count, i, &link_counted);
- if (link_counted == 0) {
- if (!buf)
- buf = e2fsck_allocate_memory(ctx,
- fs->blocksize, "bad_inode buffer");
- if (e2fsck_process_bad_inode(ctx, 0, i, buf))
- continue;
- if (disconnect_inode(ctx, i))
- continue;
- ext2fs_icount_fetch(ctx->inode_link_info, i,
- &link_count);
- ext2fs_icount_fetch(ctx->inode_count, i,
- &link_counted);
- }
- if (link_counted != link_count) {
- e2fsck_read_inode(ctx, i, &inode, "pass4");
- pctx.ino = i;
- pctx.inode = &inode;
- if (link_count != inode.i_links_count) {
- pctx.num = link_count;
- fix_problem(ctx,
- PR_4_INCONSISTENT_COUNT, &pctx);
- }
- pctx.num = link_counted;
- if (fix_problem(ctx, PR_4_BAD_REF_COUNT, &pctx)) {
- inode.i_links_count = link_counted;
- e2fsck_write_inode(ctx, i, &inode, "pass4");
- }
- }
- }
- ext2fs_free_icount(ctx->inode_link_info); ctx->inode_link_info = 0;
- ext2fs_free_icount(ctx->inode_count); ctx->inode_count = 0;
- ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
- ctx->inode_imagic_map = 0;
- ext2fs_free_mem(&buf);
-}
-
-/*
- * pass5.c --- check block and inode bitmaps against on-disk bitmaps
- */
-
-#define NO_BLK ((blk_t) -1)
-
-static void print_bitmap_problem(e2fsck_t ctx, int problem,
- struct problem_context *pctx)
-{
- switch (problem) {
- case PR_5_BLOCK_UNUSED:
- if (pctx->blk == pctx->blk2)
- pctx->blk2 = 0;
- else
- problem = PR_5_BLOCK_RANGE_UNUSED;
- break;
- case PR_5_BLOCK_USED:
- if (pctx->blk == pctx->blk2)
- pctx->blk2 = 0;
- else
- problem = PR_5_BLOCK_RANGE_USED;
- break;
- case PR_5_INODE_UNUSED:
- if (pctx->ino == pctx->ino2)
- pctx->ino2 = 0;
- else
- problem = PR_5_INODE_RANGE_UNUSED;
- break;
- case PR_5_INODE_USED:
- if (pctx->ino == pctx->ino2)
- pctx->ino2 = 0;
- else
- problem = PR_5_INODE_RANGE_USED;
- break;
- }
- fix_problem(ctx, problem, pctx);
- pctx->blk = pctx->blk2 = NO_BLK;
- pctx->ino = pctx->ino2 = 0;
-}
-
-static void check_block_bitmaps(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- blk_t i;
- int *free_array;
- int group = 0;
- unsigned int blocks = 0;
- unsigned int free_blocks = 0;
- int group_free = 0;
- int actual, bitmap;
- struct problem_context pctx;
- int problem, save_problem, fixit, had_problem;
- errcode_t retval;
-
- clear_problem_context(&pctx);
- free_array = (int *) e2fsck_allocate_memory(ctx,
- fs->group_desc_count * sizeof(int), "free block count array");
-
- if ((fs->super->s_first_data_block <
- ext2fs_get_block_bitmap_start(ctx->block_found_map)) ||
- (fs->super->s_blocks_count-1 >
- ext2fs_get_block_bitmap_end(ctx->block_found_map))) {
- pctx.num = 1;
- pctx.blk = fs->super->s_first_data_block;
- pctx.blk2 = fs->super->s_blocks_count -1;
- pctx.ino = ext2fs_get_block_bitmap_start(ctx->block_found_map);
- pctx.ino2 = ext2fs_get_block_bitmap_end(ctx->block_found_map);
- fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
-
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
-
- if ((fs->super->s_first_data_block <
- ext2fs_get_block_bitmap_start(fs->block_map)) ||
- (fs->super->s_blocks_count-1 >
- ext2fs_get_block_bitmap_end(fs->block_map))) {
- pctx.num = 2;
- pctx.blk = fs->super->s_first_data_block;
- pctx.blk2 = fs->super->s_blocks_count -1;
- pctx.ino = ext2fs_get_block_bitmap_start(fs->block_map);
- pctx.ino2 = ext2fs_get_block_bitmap_end(fs->block_map);
- fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
-
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
-
-redo_counts:
- had_problem = 0;
- save_problem = 0;
- pctx.blk = pctx.blk2 = NO_BLK;
- for (i = fs->super->s_first_data_block;
- i < fs->super->s_blocks_count;
- i++) {
- actual = ext2fs_fast_test_block_bitmap(ctx->block_found_map, i);
- bitmap = ext2fs_fast_test_block_bitmap(fs->block_map, i);
-
- if (actual == bitmap)
- goto do_counts;
-
- if (!actual && bitmap) {
- /*
- * Block not used, but marked in use in the bitmap.
- */
- problem = PR_5_BLOCK_UNUSED;
- } else {
- /*
- * Block used, but not marked in use in the bitmap.
- */
- problem = PR_5_BLOCK_USED;
- }
- if (pctx.blk == NO_BLK) {
- pctx.blk = pctx.blk2 = i;
- save_problem = problem;
- } else {
- if ((problem == save_problem) &&
- (pctx.blk2 == i-1))
- pctx.blk2++;
- else {
- print_bitmap_problem(ctx, save_problem, &pctx);
- pctx.blk = pctx.blk2 = i;
- save_problem = problem;
- }
- }
- ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
- had_problem++;
-
- do_counts:
- if (!bitmap) {
- group_free++;
- free_blocks++;
- }
- blocks ++;
- if ((blocks == fs->super->s_blocks_per_group) ||
- (i == fs->super->s_blocks_count-1)) {
- free_array[group] = group_free;
- group ++;
- blocks = 0;
- group_free = 0;
- if (ctx->progress)
- if ((ctx->progress)(ctx, 5, group,
- fs->group_desc_count*2))
- return;
- }
- }
- if (pctx.blk != NO_BLK)
- print_bitmap_problem(ctx, save_problem, &pctx);
- if (had_problem)
- fixit = end_problem_latch(ctx, PR_LATCH_BBITMAP);
- else
- fixit = -1;
- ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;
-
- if (fixit == 1) {
- ext2fs_free_block_bitmap(fs->block_map);
- retval = ext2fs_copy_bitmap(ctx->block_found_map,
- &fs->block_map);
- if (retval) {
- clear_problem_context(&pctx);
- fix_problem(ctx, PR_5_COPY_BBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ext2fs_set_bitmap_padding(fs->block_map);
- ext2fs_mark_bb_dirty(fs);
-
- /* Redo the counts */
- blocks = 0; free_blocks = 0; group_free = 0; group = 0;
- memset(free_array, 0, fs->group_desc_count * sizeof(int));
- goto redo_counts;
- } else if (fixit == 0)
- ext2fs_unmark_valid(fs);
-
- for (i = 0; i < fs->group_desc_count; i++) {
- if (free_array[i] != fs->group_desc[i].bg_free_blocks_count) {
- pctx.group = i;
- pctx.blk = fs->group_desc[i].bg_free_blocks_count;
- pctx.blk2 = free_array[i];
-
- if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT_GROUP,
- &pctx)) {
- fs->group_desc[i].bg_free_blocks_count =
- free_array[i];
- ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- }
- }
- if (free_blocks != fs->super->s_free_blocks_count) {
- pctx.group = 0;
- pctx.blk = fs->super->s_free_blocks_count;
- pctx.blk2 = free_blocks;
-
- if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) {
- fs->super->s_free_blocks_count = free_blocks;
- ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- }
- ext2fs_free_mem(&free_array);
-}
-
-static void check_inode_bitmaps(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t i;
- unsigned int free_inodes = 0;
- int group_free = 0;
- int dirs_count = 0;
- int group = 0;
- unsigned int inodes = 0;
- int *free_array;
- int *dir_array;
- int actual, bitmap;
- errcode_t retval;
- struct problem_context pctx;
- int problem, save_problem, fixit, had_problem;
-
- clear_problem_context(&pctx);
- free_array = (int *) e2fsck_allocate_memory(ctx,
- fs->group_desc_count * sizeof(int), "free inode count array");
-
- dir_array = (int *) e2fsck_allocate_memory(ctx,
- fs->group_desc_count * sizeof(int), "directory count array");
-
- if ((1 < ext2fs_get_inode_bitmap_start(ctx->inode_used_map)) ||
- (fs->super->s_inodes_count >
- ext2fs_get_inode_bitmap_end(ctx->inode_used_map))) {
- pctx.num = 3;
- pctx.blk = 1;
- pctx.blk2 = fs->super->s_inodes_count;
- pctx.ino = ext2fs_get_inode_bitmap_start(ctx->inode_used_map);
- pctx.ino2 = ext2fs_get_inode_bitmap_end(ctx->inode_used_map);
- fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
-
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
- if ((1 < ext2fs_get_inode_bitmap_start(fs->inode_map)) ||
- (fs->super->s_inodes_count >
- ext2fs_get_inode_bitmap_end(fs->inode_map))) {
- pctx.num = 4;
- pctx.blk = 1;
- pctx.blk2 = fs->super->s_inodes_count;
- pctx.ino = ext2fs_get_inode_bitmap_start(fs->inode_map);
- pctx.ino2 = ext2fs_get_inode_bitmap_end(fs->inode_map);
- fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
-
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
-
-redo_counts:
- had_problem = 0;
- save_problem = 0;
- pctx.ino = pctx.ino2 = 0;
- for (i = 1; i <= fs->super->s_inodes_count; i++) {
- actual = ext2fs_fast_test_inode_bitmap(ctx->inode_used_map, i);
- bitmap = ext2fs_fast_test_inode_bitmap(fs->inode_map, i);
-
- if (actual == bitmap)
- goto do_counts;
-
- if (!actual && bitmap) {
- /*
- * Inode wasn't used, but marked in bitmap
- */
- problem = PR_5_INODE_UNUSED;
- } else /* if (actual && !bitmap) */ {
- /*
- * Inode used, but not in bitmap
- */
- problem = PR_5_INODE_USED;
- }
- if (pctx.ino == 0) {
- pctx.ino = pctx.ino2 = i;
- save_problem = problem;
- } else {
- if ((problem == save_problem) &&
- (pctx.ino2 == i-1))
- pctx.ino2++;
- else {
- print_bitmap_problem(ctx, save_problem, &pctx);
- pctx.ino = pctx.ino2 = i;
- save_problem = problem;
- }
- }
- ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
- had_problem++;
-
-do_counts:
- if (!bitmap) {
- group_free++;
- free_inodes++;
- } else {
- if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, i))
- dirs_count++;
- }
- inodes++;
- if ((inodes == fs->super->s_inodes_per_group) ||
- (i == fs->super->s_inodes_count)) {
- free_array[group] = group_free;
- dir_array[group] = dirs_count;
- group ++;
- inodes = 0;
- group_free = 0;
- dirs_count = 0;
- if (ctx->progress)
- if ((ctx->progress)(ctx, 5,
- group + fs->group_desc_count,
- fs->group_desc_count*2))
- return;
- }
- }
- if (pctx.ino)
- print_bitmap_problem(ctx, save_problem, &pctx);
-
- if (had_problem)
- fixit = end_problem_latch(ctx, PR_LATCH_IBITMAP);
- else
- fixit = -1;
- ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;
-
- if (fixit == 1) {
- ext2fs_free_inode_bitmap(fs->inode_map);
- retval = ext2fs_copy_bitmap(ctx->inode_used_map,
- &fs->inode_map);
- if (retval) {
- clear_problem_context(&pctx);
- fix_problem(ctx, PR_5_COPY_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- ext2fs_set_bitmap_padding(fs->inode_map);
- ext2fs_mark_ib_dirty(fs);
-
- /* redo counts */
- inodes = 0; free_inodes = 0; group_free = 0;
- dirs_count = 0; group = 0;
- memset(free_array, 0, fs->group_desc_count * sizeof(int));
- memset(dir_array, 0, fs->group_desc_count * sizeof(int));
- goto redo_counts;
- } else if (fixit == 0)
- ext2fs_unmark_valid(fs);
-
- for (i = 0; i < fs->group_desc_count; i++) {
- if (free_array[i] != fs->group_desc[i].bg_free_inodes_count) {
- pctx.group = i;
- pctx.ino = fs->group_desc[i].bg_free_inodes_count;
- pctx.ino2 = free_array[i];
- if (fix_problem(ctx, PR_5_FREE_INODE_COUNT_GROUP,
- &pctx)) {
- fs->group_desc[i].bg_free_inodes_count =
- free_array[i];
- ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- }
- if (dir_array[i] != fs->group_desc[i].bg_used_dirs_count) {
- pctx.group = i;
- pctx.ino = fs->group_desc[i].bg_used_dirs_count;
- pctx.ino2 = dir_array[i];
-
- if (fix_problem(ctx, PR_5_FREE_DIR_COUNT_GROUP,
- &pctx)) {
- fs->group_desc[i].bg_used_dirs_count =
- dir_array[i];
- ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- }
- }
- if (free_inodes != fs->super->s_free_inodes_count) {
- pctx.group = -1;
- pctx.ino = fs->super->s_free_inodes_count;
- pctx.ino2 = free_inodes;
-
- if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) {
- fs->super->s_free_inodes_count = free_inodes;
- ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- }
- ext2fs_free_mem(&free_array);
- ext2fs_free_mem(&dir_array);
-}
-
-static void check_inode_end(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t end, save_inodes_count, i;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- end = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
- pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map, end,
- &save_inodes_count);
- if (pctx.errcode) {
- pctx.num = 1;
- fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
- if (save_inodes_count == end)
- return;
-
- for (i = save_inodes_count + 1; i <= end; i++) {
- if (!ext2fs_test_inode_bitmap(fs->inode_map, i)) {
- if (fix_problem(ctx, PR_5_INODE_BMAP_PADDING, &pctx)) {
- for (i = save_inodes_count + 1; i <= end; i++)
- ext2fs_mark_inode_bitmap(fs->inode_map,
- i);
- ext2fs_mark_ib_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- break;
- }
- }
-
- pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map,
- save_inodes_count, 0);
- if (pctx.errcode) {
- pctx.num = 2;
- fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
-}
-
-static void check_block_end(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- blk_t end, save_blocks_count, i;
- struct problem_context pctx;
-
- clear_problem_context(&pctx);
-
- end = fs->block_map->start +
- (EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count) - 1;
- pctx.errcode = ext2fs_fudge_block_bitmap_end(fs->block_map, end,
- &save_blocks_count);
- if (pctx.errcode) {
- pctx.num = 3;
- fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
- if (save_blocks_count == end)
- return;
-
- for (i = save_blocks_count + 1; i <= end; i++) {
- if (!ext2fs_test_block_bitmap(fs->block_map, i)) {
- if (fix_problem(ctx, PR_5_BLOCK_BMAP_PADDING, &pctx)) {
- for (i = save_blocks_count + 1; i <= end; i++)
- ext2fs_mark_block_bitmap(fs->block_map,
- i);
- ext2fs_mark_bb_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
- break;
- }
- }
-
- pctx.errcode = ext2fs_fudge_block_bitmap_end(fs->block_map,
- save_blocks_count, 0);
- if (pctx.errcode) {
- pctx.num = 4;
- fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT; /* fatal */
- return;
- }
-}
-
-static void e2fsck_pass5(e2fsck_t ctx)
-{
- struct problem_context pctx;
-
- /* Pass 5 */
-
- clear_problem_context(&pctx);
-
- if (!(ctx->options & E2F_OPT_PREEN))
- fix_problem(ctx, PR_5_PASS_HEADER, &pctx);
-
- if (ctx->progress)
- if ((ctx->progress)(ctx, 5, 0, ctx->fs->group_desc_count*2))
- return;
-
- e2fsck_read_bitmaps(ctx);
-
- check_block_bitmaps(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- check_inode_bitmaps(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- check_inode_end(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- check_block_end(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
-
- ext2fs_free_inode_bitmap(ctx->inode_used_map);
- ctx->inode_used_map = 0;
- ext2fs_free_inode_bitmap(ctx->inode_dir_map);
- ctx->inode_dir_map = 0;
- ext2fs_free_block_bitmap(ctx->block_found_map);
- ctx->block_found_map = 0;
-}
-
-/*
- * problem.c --- report filesystem problems to the user
- */
-
-#define PR_PREEN_OK 0x000001 /* Don't need to do preenhalt */
-#define PR_NO_OK 0x000002 /* If user answers no, don't make fs invalid */
-#define PR_NO_DEFAULT 0x000004 /* Default to no */
-#define PR_MSG_ONLY 0x000008 /* Print message only */
-
-/* Bit positions 0x000ff0 are reserved for the PR_LATCH flags */
-
-#define PR_FATAL 0x001000 /* Fatal error */
-#define PR_AFTER_CODE 0x002000 /* After asking the first question, */
- /* ask another */
-#define PR_PREEN_NOMSG 0x004000 /* Don't print a message if we're preening */
-#define PR_NOCOLLATE 0x008000 /* Don't collate answers for this latch */
-#define PR_NO_NOMSG 0x010000 /* Don't print a message if e2fsck -n */
-#define PR_PREEN_NO 0x020000 /* Use No as an answer if preening */
-#define PR_PREEN_NOHDR 0x040000 /* Don't print the preen header */
-
-
-#define PROMPT_NONE 0
-#define PROMPT_FIX 1
-#define PROMPT_CLEAR 2
-#define PROMPT_RELOCATE 3
-#define PROMPT_ALLOCATE 4
-#define PROMPT_EXPAND 5
-#define PROMPT_CONNECT 6
-#define PROMPT_CREATE 7
-#define PROMPT_SALVAGE 8
-#define PROMPT_TRUNCATE 9
-#define PROMPT_CLEAR_INODE 10
-#define PROMPT_ABORT 11
-#define PROMPT_SPLIT 12
-#define PROMPT_CONTINUE 13
-#define PROMPT_CLONE 14
-#define PROMPT_DELETE 15
-#define PROMPT_SUPPRESS 16
-#define PROMPT_UNLINK 17
-#define PROMPT_CLEAR_HTREE 18
-#define PROMPT_RECREATE 19
-#define PROMPT_NULL 20
-
-struct e2fsck_problem {
- problem_t e2p_code;
- const char * e2p_description;
- char prompt;
- int flags;
- problem_t second_code;
-};
-
-struct latch_descr {
- int latch_code;
- problem_t question;
- problem_t end_message;
- int flags;
-};
-
-/*
- * These are the prompts which are used to ask the user if they want
- * to fix a problem.
- */
-static const char * const prompt[] = {
- N_("(no prompt)"), /* 0 */
- N_("Fix"), /* 1 */
- N_("Clear"), /* 2 */
- N_("Relocate"), /* 3 */
- N_("Allocate"), /* 4 */
- N_("Expand"), /* 5 */
- N_("Connect to /lost+found"), /* 6 */
- N_("Create"), /* 7 */
- N_("Salvage"), /* 8 */
- N_("Truncate"), /* 9 */
- N_("Clear inode"), /* 10 */
- N_("Abort"), /* 11 */
- N_("Split"), /* 12 */
- N_("Continue"), /* 13 */
- N_("Clone multiply-claimed blocks"), /* 14 */
- N_("Delete file"), /* 15 */
- N_("Suppress messages"),/* 16 */
- N_("Unlink"), /* 17 */
- N_("Clear HTree index"),/* 18 */
- N_("Recreate"), /* 19 */
- "", /* 20 */
-};
-
-/*
- * These messages are printed when we are preen mode and we will be
- * automatically fixing the problem.
- */
-static const char * const preen_msg[] = {
- N_("(NONE)"), /* 0 */
- N_("FIXED"), /* 1 */
- N_("CLEARED"), /* 2 */
- N_("RELOCATED"), /* 3 */
- N_("ALLOCATED"), /* 4 */
- N_("EXPANDED"), /* 5 */
- N_("RECONNECTED"), /* 6 */
- N_("CREATED"), /* 7 */
- N_("SALVAGED"), /* 8 */
- N_("TRUNCATED"), /* 9 */
- N_("INODE CLEARED"), /* 10 */
- N_("ABORTED"), /* 11 */
- N_("SPLIT"), /* 12 */
- N_("CONTINUING"), /* 13 */
- N_("MULTIPLY-CLAIMED BLOCKS CLONED"), /* 14 */
- N_("FILE DELETED"), /* 15 */
- N_("SUPPRESSED"), /* 16 */
- N_("UNLINKED"), /* 17 */
- N_("HTREE INDEX CLEARED"),/* 18 */
- N_("WILL RECREATE"), /* 19 */
- "", /* 20 */
-};
-
-static const struct e2fsck_problem problem_table[] = {
-
- /* Pre-Pass 1 errors */
-
- /* Block bitmap not in group */
- { PR_0_BB_NOT_GROUP, N_("@b @B for @g %g is not in @g. (@b %b)\n"),
- PROMPT_RELOCATE, PR_LATCH_RELOC },
-
- /* Inode bitmap not in group */
- { PR_0_IB_NOT_GROUP, N_("@i @B for @g %g is not in @g. (@b %b)\n"),
- PROMPT_RELOCATE, PR_LATCH_RELOC },
-
- /* Inode table not in group */
- { PR_0_ITABLE_NOT_GROUP,
- N_("@i table for @g %g is not in @g. (@b %b)\n"
- "WARNING: SEVERE DATA LOSS POSSIBLE.\n"),
- PROMPT_RELOCATE, PR_LATCH_RELOC },
-
- /* Superblock corrupt */
- { PR_0_SB_CORRUPT,
- N_("\nThe @S could not be read or does not describe a correct ext2\n"
- "@f. If the @v is valid and it really contains an ext2\n"
- "@f (and not swap or ufs or something else), then the @S\n"
- "is corrupt, and you might try running e2fsck with an alternate @S:\n"
- " e2fsck -b %S <@v>\n\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Filesystem size is wrong */
- { PR_0_FS_SIZE_WRONG,
- N_("The @f size (according to the @S) is %b @bs\n"
- "The physical size of the @v is %c @bs\n"
- "Either the @S or the partition table is likely to be corrupt!\n"),
- PROMPT_ABORT, 0 },
-
- /* Fragments not supported */
- { PR_0_NO_FRAGMENTS,
- N_("@S @b_size = %b, fragsize = %c.\n"
- "This version of e2fsck does not support fragment sizes different\n"
- "from the @b size.\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Bad blocks_per_group */
- { PR_0_BLOCKS_PER_GROUP,
- N_("@S @bs_per_group = %b, should have been %c\n"),
- PROMPT_NONE, PR_AFTER_CODE, PR_0_SB_CORRUPT },
-
- /* Bad first_data_block */
- { PR_0_FIRST_DATA_BLOCK,
- N_("@S first_data_@b = %b, should have been %c\n"),
- PROMPT_NONE, PR_AFTER_CODE, PR_0_SB_CORRUPT },
-
- /* Adding UUID to filesystem */
- { PR_0_ADD_UUID,
- N_("@f did not have a UUID; generating one.\n\n"),
- PROMPT_NONE, 0 },
-
- /* Relocate hint */
- { PR_0_RELOCATE_HINT,
- N_("Note: if several inode or block bitmap blocks or part\n"
- "of the inode table require relocation, you may wish to try\n"
- "running e2fsck with the '-b %S' option first. The problem\n"
- "may lie only with the primary block group descriptors, and\n"
- "the backup block group descriptors may be OK.\n\n"),
- PROMPT_NONE, PR_PREEN_OK | PR_NOCOLLATE },
-
- /* Miscellaneous superblock corruption */
- { PR_0_MISC_CORRUPT_SUPER,
- N_("Corruption found in @S. (%s = %N).\n"),
- PROMPT_NONE, PR_AFTER_CODE, PR_0_SB_CORRUPT },
-
- /* Error determing physical device size of filesystem */
- { PR_0_GETSIZE_ERROR,
- N_("Error determining size of the physical @v: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Inode count in superblock is incorrect */
- { PR_0_INODE_COUNT_WRONG,
- N_("@i count in @S is %i, @s %j.\n"),
- PROMPT_FIX, 0 },
-
- { PR_0_HURD_CLEAR_FILETYPE,
- N_("The Hurd does not support the filetype feature.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Journal inode is invalid */
- { PR_0_JOURNAL_BAD_INODE,
- N_("@S has an @n ext3 @j (@i %i).\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* The external journal has (unsupported) multiple filesystems */
- { PR_0_JOURNAL_UNSUPP_MULTIFS,
- N_("External @j has multiple @f users (unsupported).\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Can't find external journal */
- { PR_0_CANT_FIND_JOURNAL,
- N_("Can't find external @j\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* External journal has bad superblock */
- { PR_0_EXT_JOURNAL_BAD_SUPER,
- N_("External @j has bad @S\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Superblock has a bad journal UUID */
- { PR_0_JOURNAL_BAD_UUID,
- N_("External @j does not support this @f\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Journal has an unknown superblock type */
- { PR_0_JOURNAL_UNSUPP_SUPER,
- N_("Ext3 @j @S is unknown type %N (unsupported).\n"
- "It is likely that your copy of e2fsck is old and/or doesn't "
- "support this @j format.\n"
- "It is also possible the @j @S is corrupt.\n"),
- PROMPT_ABORT, PR_NO_OK | PR_AFTER_CODE, PR_0_JOURNAL_BAD_SUPER },
-
- /* Journal superblock is corrupt */
- { PR_0_JOURNAL_BAD_SUPER,
- N_("Ext3 @j @S is corrupt.\n"),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Superblock flag should be cleared */
- { PR_0_JOURNAL_HAS_JOURNAL,
- N_("@S doesn't have has_@j flag, but has ext3 @j %s.\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Superblock flag is incorrect */
- { PR_0_JOURNAL_RECOVER_SET,
- N_("@S has ext3 needs_recovery flag set, but no @j.\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Journal has data, but recovery flag is clear */
- { PR_0_JOURNAL_RECOVERY_CLEAR,
- N_("ext3 recovery flag is clear, but @j has data.\n"),
- PROMPT_NONE, 0 },
-
- /* Ask if we should clear the journal */
- { PR_0_JOURNAL_RESET_JOURNAL,
- N_("Clear @j"),
- PROMPT_NULL, PR_PREEN_NOMSG },
-
- /* Ask if we should run the journal anyway */
- { PR_0_JOURNAL_RUN,
- N_("Run @j anyway"),
- PROMPT_NULL, 0 },
-
- /* Run the journal by default */
- { PR_0_JOURNAL_RUN_DEFAULT,
- N_("Recovery flag not set in backup @S, so running @j anyway.\n"),
- PROMPT_NONE, 0 },
-
- /* Clearing orphan inode */
- { PR_0_ORPHAN_CLEAR_INODE,
- N_("%s @o @i %i (uid=%Iu, gid=%Ig, mode=%Im, size=%Is)\n"),
- PROMPT_NONE, 0 },
-
- /* Illegal block found in orphaned inode */
- { PR_0_ORPHAN_ILLEGAL_BLOCK_NUM,
- N_("@I @b #%B (%b) found in @o @i %i.\n"),
- PROMPT_NONE, 0 },
-
- /* Already cleared block found in orphaned inode */
- { PR_0_ORPHAN_ALREADY_CLEARED_BLOCK,
- N_("Already cleared @b #%B (%b) found in @o @i %i.\n"),
- PROMPT_NONE, 0 },
-
- /* Illegal orphan inode in superblock */
- { PR_0_ORPHAN_ILLEGAL_HEAD_INODE,
- N_("@I @o @i %i in @S.\n"),
- PROMPT_NONE, 0 },
-
- /* Illegal inode in orphaned inode list */
- { PR_0_ORPHAN_ILLEGAL_INODE,
- N_("@I @i %i in @o @i list.\n"),
- PROMPT_NONE, 0 },
-
- /* Filesystem revision is 0, but feature flags are set */
- { PR_0_FS_REV_LEVEL,
- N_("@f has feature flag(s) set, but is a revision 0 @f. "),
- PROMPT_FIX, PR_PREEN_OK | PR_NO_OK },
-
- /* Journal superblock has an unknown read-only feature flag set */
- { PR_0_JOURNAL_UNSUPP_ROCOMPAT,
- N_("Ext3 @j @S has an unknown read-only feature flag set.\n"),
- PROMPT_ABORT, 0 },
-
- /* Journal superblock has an unknown incompatible feature flag set */
- { PR_0_JOURNAL_UNSUPP_INCOMPAT,
- N_("Ext3 @j @S has an unknown incompatible feature flag set.\n"),
- PROMPT_ABORT, 0 },
-
- /* Journal has unsupported version number */
- { PR_0_JOURNAL_UNSUPP_VERSION,
- N_("@j version not supported by this e2fsck.\n"),
- PROMPT_ABORT, 0 },
-
- /* Moving journal to hidden file */
- { PR_0_MOVE_JOURNAL,
- N_("Moving @j from /%s to hidden @i.\n\n"),
- PROMPT_NONE, 0 },
-
- /* Error moving journal to hidden file */
- { PR_0_ERR_MOVE_JOURNAL,
- N_("Error moving @j: %m\n\n"),
- PROMPT_NONE, 0 },
-
- /* Clearing V2 journal superblock */
- { PR_0_CLEAR_V2_JOURNAL,
- N_("Found @n V2 @j @S fields (from V1 @j).\n"
- "Clearing fields beyond the V1 @j @S...\n\n"),
- PROMPT_NONE, 0 },
-
- /* Backup journal inode blocks */
- { PR_0_BACKUP_JNL,
- N_("Backing up @j @i @b information.\n\n"),
- PROMPT_NONE, 0 },
-
- /* Reserved blocks w/o resize_inode */
- { PR_0_NONZERO_RESERVED_GDT_BLOCKS,
- N_("@f does not have resize_@i enabled, but s_reserved_gdt_@bs\n"
- "is %N; @s zero. "),
- PROMPT_FIX, 0 },
-
- /* Resize_inode not enabled, but resize inode is non-zero */
- { PR_0_CLEAR_RESIZE_INODE,
- N_("Resize_@i not enabled, but the resize @i is non-zero. "),
- PROMPT_CLEAR, 0 },
-
- /* Resize inode invalid */
- { PR_0_RESIZE_INODE_INVALID,
- N_("Resize @i not valid. "),
- PROMPT_RECREATE, 0 },
-
- /* Pass 1 errors */
-
- /* Pass 1: Checking inodes, blocks, and sizes */
- { PR_1_PASS_HEADER,
- N_("Pass 1: Checking @is, @bs, and sizes\n"),
- PROMPT_NONE, 0 },
-
- /* Root directory is not an inode */
- { PR_1_ROOT_NO_DIR, N_("@r is not a @d. "),
- PROMPT_CLEAR, 0 },
-
- /* Root directory has dtime set */
- { PR_1_ROOT_DTIME,
- N_("@r has dtime set (probably due to old mke2fs). "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Reserved inode has bad mode */
- { PR_1_RESERVED_BAD_MODE,
- N_("Reserved @i %i (%Q) has @n mode. "),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Deleted inode has zero dtime */
- { PR_1_ZERO_DTIME,
- N_("@D @i %i has zero dtime. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Inode in use, but dtime set */
- { PR_1_SET_DTIME,
- N_("@i %i is in use, but has dtime set. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Zero-length directory */
- { PR_1_ZERO_LENGTH_DIR,
- N_("@i %i is a @z @d. "),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Block bitmap conflicts with some other fs block */
- { PR_1_BB_CONFLICT,
- N_("@g %g's @b @B at %b @C.\n"),
- PROMPT_RELOCATE, 0 },
-
- /* Inode bitmap conflicts with some other fs block */
- { PR_1_IB_CONFLICT,
- N_("@g %g's @i @B at %b @C.\n"),
- PROMPT_RELOCATE, 0 },
-
- /* Inode table conflicts with some other fs block */
- { PR_1_ITABLE_CONFLICT,
- N_("@g %g's @i table at %b @C.\n"),
- PROMPT_RELOCATE, 0 },
-
- /* Block bitmap is on a bad block */
- { PR_1_BB_BAD_BLOCK,
- N_("@g %g's @b @B (%b) is bad. "),
- PROMPT_RELOCATE, 0 },
-
- /* Inode bitmap is on a bad block */
- { PR_1_IB_BAD_BLOCK,
- N_("@g %g's @i @B (%b) is bad. "),
- PROMPT_RELOCATE, 0 },
-
- /* Inode has incorrect i_size */
- { PR_1_BAD_I_SIZE,
- N_("@i %i, i_size is %Is, @s %N. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Inode has incorrect i_blocks */
- { PR_1_BAD_I_BLOCKS,
- N_("@i %i, i_@bs is %Ib, @s %N. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Illegal blocknumber in inode */
- { PR_1_ILLEGAL_BLOCK_NUM,
- N_("@I @b #%B (%b) in @i %i. "),
- PROMPT_CLEAR, PR_LATCH_BLOCK },
-
- /* Block number overlaps fs metadata */
- { PR_1_BLOCK_OVERLAPS_METADATA,
- N_("@b #%B (%b) overlaps @f metadata in @i %i. "),
- PROMPT_CLEAR, PR_LATCH_BLOCK },
-
- /* Inode has illegal blocks (latch question) */
- { PR_1_INODE_BLOCK_LATCH,
- N_("@i %i has illegal @b(s). "),
- PROMPT_CLEAR, 0 },
-
- /* Too many bad blocks in inode */
- { PR_1_TOO_MANY_BAD_BLOCKS,
- N_("Too many illegal @bs in @i %i.\n"),
- PROMPT_CLEAR_INODE, PR_NO_OK },
-
- /* Illegal block number in bad block inode */
- { PR_1_BB_ILLEGAL_BLOCK_NUM,
- N_("@I @b #%B (%b) in bad @b @i. "),
- PROMPT_CLEAR, PR_LATCH_BBLOCK },
-
- /* Bad block inode has illegal blocks (latch question) */
- { PR_1_INODE_BBLOCK_LATCH,
- N_("Bad @b @i has illegal @b(s). "),
- PROMPT_CLEAR, 0 },
-
- /* Duplicate or bad blocks in use! */
- { PR_1_DUP_BLOCKS_PREENSTOP,
- N_("Duplicate or bad @b in use!\n"),
- PROMPT_NONE, 0 },
-
- /* Bad block used as bad block indirect block */
- { PR_1_BBINODE_BAD_METABLOCK,
- N_("Bad @b %b used as bad @b @i indirect @b. "),
- PROMPT_CLEAR, PR_LATCH_BBLOCK },
-
- /* Inconsistency can't be fixed prompt */
- { PR_1_BBINODE_BAD_METABLOCK_PROMPT,
- N_("\nThe bad @b @i has probably been corrupted. You probably\n"
- "should stop now and run ""e2fsck -c"" to scan for bad blocks\n"
- "in the @f.\n"),
- PROMPT_CONTINUE, PR_PREEN_NOMSG },
-
- /* Bad primary block */
- { PR_1_BAD_PRIMARY_BLOCK,
- N_("\nIf the @b is really bad, the @f cannot be fixed.\n"),
- PROMPT_NONE, PR_AFTER_CODE, PR_1_BAD_PRIMARY_BLOCK_PROMPT },
-
- /* Bad primary block prompt */
- { PR_1_BAD_PRIMARY_BLOCK_PROMPT,
- N_("You can remove this @b from the bad @b list and hope\n"
- "that the @b is really OK. But there are no guarantees.\n\n"),
- PROMPT_CLEAR, PR_PREEN_NOMSG },
-
- /* Bad primary superblock */
- { PR_1_BAD_PRIMARY_SUPERBLOCK,
- N_("The primary @S (%b) is on the bad @b list.\n"),
- PROMPT_NONE, PR_AFTER_CODE, PR_1_BAD_PRIMARY_BLOCK },
-
- /* Bad primary block group descriptors */
- { PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR,
- N_("Block %b in the primary @g descriptors "
- "is on the bad @b list\n"),
- PROMPT_NONE, PR_AFTER_CODE, PR_1_BAD_PRIMARY_BLOCK },
-
- /* Bad superblock in group */
- { PR_1_BAD_SUPERBLOCK,
- N_("Warning: Group %g's @S (%b) is bad.\n"),
- PROMPT_NONE, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Bad block group descriptors in group */
- { PR_1_BAD_GROUP_DESCRIPTORS,
- N_("Warning: Group %g's copy of the @g descriptors has a bad "
- "@b (%b).\n"),
- PROMPT_NONE, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Block claimed for no reason */
- { PR_1_PROGERR_CLAIMED_BLOCK,
- N_("Programming error? @b #%b claimed for no reason in "
- "process_bad_@b.\n"),
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Error allocating blocks for relocating metadata */
- { PR_1_RELOC_BLOCK_ALLOCATE,
- N_("@A %N contiguous @b(s) in @b @g %g for %s: %m\n"),
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Error allocating block buffer during relocation process */
- { PR_1_RELOC_MEMORY_ALLOCATE,
- N_("@A @b buffer for relocating %s\n"),
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Relocating metadata group information from X to Y */
- { PR_1_RELOC_FROM_TO,
- N_("Relocating @g %g's %s from %b to %c...\n"),
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Relocating metatdata group information to X */
- { PR_1_RELOC_TO,
- N_("Relocating @g %g's %s to %c...\n"), /* xgettext:no-c-format */
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Block read error during relocation process */
- { PR_1_RELOC_READ_ERR,
- N_("Warning: could not read @b %b of %s: %m\n"),
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Block write error during relocation process */
- { PR_1_RELOC_WRITE_ERR,
- N_("Warning: could not write @b %b for %s: %m\n"),
- PROMPT_NONE, PR_PREEN_OK },
-
- /* Error allocating inode bitmap */
- { PR_1_ALLOCATE_IBITMAP_ERROR,
- N_("@A @i @B (%N): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error allocating block bitmap */
- { PR_1_ALLOCATE_BBITMAP_ERROR,
- N_("@A @b @B (%N): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error allocating icount structure */
- { PR_1_ALLOCATE_ICOUNT,
- N_("@A icount link information: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error allocating dbcount */
- { PR_1_ALLOCATE_DBCOUNT,
- N_("@A @d @b array: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error while scanning inodes */
- { PR_1_ISCAN_ERROR,
- N_("Error while scanning @is (%i): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error while iterating over blocks */
- { PR_1_BLOCK_ITERATE,
- N_("Error while iterating over @bs in @i %i: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error while storing inode count information */
- { PR_1_ICOUNT_STORE,
- N_("Error storing @i count information (@i=%i, count=%N): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error while storing directory block information */
- { PR_1_ADD_DBLOCK,
- N_("Error storing @d @b information "
- "(@i=%i, @b=%b, num=%N): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error while reading inode (for clearing) */
- { PR_1_READ_INODE,
- N_("Error reading @i %i: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Suppress messages prompt */
- { PR_1_SUPPRESS_MESSAGES, "", PROMPT_SUPPRESS, PR_NO_OK },
-
- /* Imagic flag set on an inode when filesystem doesn't support it */
- { PR_1_SET_IMAGIC,
- N_("@i %i has imagic flag set. "),
- PROMPT_CLEAR, 0 },
-
- /* Immutable flag set on a device or socket inode */
- { PR_1_SET_IMMUTABLE,
- N_("Special (@v/socket/fifo/symlink) file (@i %i) has immutable\n"
- "or append-only flag set. "),
- PROMPT_CLEAR, PR_PREEN_OK | PR_PREEN_NO | PR_NO_OK },
-
- /* Compression flag set on an inode when filesystem doesn't support it */
- { PR_1_COMPR_SET,
- N_("@i %i has @cion flag set on @f without @cion support. "),
- PROMPT_CLEAR, 0 },
-
- /* Non-zero size for device, fifo or socket inode */
- { PR_1_SET_NONZSIZE,
- N_("Special (@v/socket/fifo) @i %i has non-zero size. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Filesystem revision is 0, but feature flags are set */
- { PR_1_FS_REV_LEVEL,
- N_("@f has feature flag(s) set, but is a revision 0 @f. "),
- PROMPT_FIX, PR_PREEN_OK | PR_NO_OK },
-
- /* Journal inode is not in use, but contains data */
- { PR_1_JOURNAL_INODE_NOT_CLEAR,
- N_("@j @i is not in use, but contains data. "),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Journal has bad mode */
- { PR_1_JOURNAL_BAD_MODE,
- N_("@j is not regular file. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Deal with inodes that were part of orphan linked list */
- { PR_1_LOW_DTIME,
- N_("@i %i was part of the @o @i list. "),
- PROMPT_FIX, PR_LATCH_LOW_DTIME, 0 },
-
- /* Deal with inodes that were part of corrupted orphan linked
- list (latch question) */
- { PR_1_ORPHAN_LIST_REFUGEES,
- N_("@is that were part of a corrupted orphan linked list found. "),
- PROMPT_FIX, 0 },
-
- /* Error allocating refcount structure */
- { PR_1_ALLOCATE_REFCOUNT,
- N_("@A refcount structure (%N): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error reading extended attribute block */
- { PR_1_READ_EA_BLOCK,
- N_("Error reading @a @b %b for @i %i. "),
- PROMPT_CLEAR, 0 },
-
- /* Invalid extended attribute block */
- { PR_1_BAD_EA_BLOCK,
- N_("@i %i has a bad @a @b %b. "),
- PROMPT_CLEAR, 0 },
-
- /* Error reading Extended Attribute block while fixing refcount */
- { PR_1_EXTATTR_READ_ABORT,
- N_("Error reading @a @b %b (%m). "),
- PROMPT_ABORT, 0 },
-
- /* Extended attribute reference count incorrect */
- { PR_1_EXTATTR_REFCOUNT,
- N_("@a @b %b has reference count %B, @s %N. "),
- PROMPT_FIX, 0 },
-
- /* Error writing Extended Attribute block while fixing refcount */
- { PR_1_EXTATTR_WRITE,
- N_("Error writing @a @b %b (%m). "),
- PROMPT_ABORT, 0 },
-
- /* Multiple EA blocks not supported */
- { PR_1_EA_MULTI_BLOCK,
- N_("@a @b %b has h_@bs > 1. "),
- PROMPT_CLEAR, 0},
-
- /* Error allocating EA region allocation structure */
- { PR_1_EA_ALLOC_REGION,
- N_("@A @a @b %b. "),
- PROMPT_ABORT, 0},
-
- /* Error EA allocation collision */
- { PR_1_EA_ALLOC_COLLISION,
- N_("@a @b %b is corrupt (allocation collision). "),
- PROMPT_CLEAR, 0},
-
- /* Bad extended attribute name */
- { PR_1_EA_BAD_NAME,
- N_("@a @b %b is corrupt (@n name). "),
- PROMPT_CLEAR, 0},
-
- /* Bad extended attribute value */
- { PR_1_EA_BAD_VALUE,
- N_("@a @b %b is corrupt (@n value). "),
- PROMPT_CLEAR, 0},
-
- /* Inode too big (latch question) */
- { PR_1_INODE_TOOBIG,
- N_("@i %i is too big. "), PROMPT_TRUNCATE, 0 },
-
- /* Directory too big */
- { PR_1_TOOBIG_DIR,
- N_("@b #%B (%b) causes @d to be too big. "),
- PROMPT_CLEAR, PR_LATCH_TOOBIG },
-
- /* Regular file too big */
- { PR_1_TOOBIG_REG,
- N_("@b #%B (%b) causes file to be too big. "),
- PROMPT_CLEAR, PR_LATCH_TOOBIG },
-
- /* Symlink too big */
- { PR_1_TOOBIG_SYMLINK,
- N_("@b #%B (%b) causes symlink to be too big. "),
- PROMPT_CLEAR, PR_LATCH_TOOBIG },
-
- /* INDEX_FL flag set on a non-HTREE filesystem */
- { PR_1_HTREE_SET,
- N_("@i %i has INDEX_FL flag set on @f without htree support.\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* INDEX_FL flag set on a non-directory */
- { PR_1_HTREE_NODIR,
- N_("@i %i has INDEX_FL flag set but is not a @d.\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Invalid root node in HTREE directory */
- { PR_1_HTREE_BADROOT,
- N_("@h %i has an @n root node.\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Unsupported hash version in HTREE directory */
- { PR_1_HTREE_HASHV,
- N_("@h %i has an unsupported hash version (%N)\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Incompatible flag in HTREE root node */
- { PR_1_HTREE_INCOMPAT,
- N_("@h %i uses an incompatible htree root node flag.\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* HTREE too deep */
- { PR_1_HTREE_DEPTH,
- N_("@h %i has a tree depth (%N) which is too big\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Bad block has indirect block that conflicts with filesystem block */
- { PR_1_BB_FS_BLOCK,
- N_("Bad @b @i has an indirect @b (%b) that conflicts with\n"
- "@f metadata. "),
- PROMPT_CLEAR, PR_LATCH_BBLOCK },
-
- /* Resize inode failed */
- { PR_1_RESIZE_INODE_CREATE,
- N_("Resize @i (re)creation failed: %m."),
- PROMPT_ABORT, 0 },
-
- /* invalid inode->i_extra_isize */
- { PR_1_EXTRA_ISIZE,
- N_("@i %i has a extra size (%IS) which is @n\n"),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* invalid ea entry->e_name_len */
- { PR_1_ATTR_NAME_LEN,
- N_("@a in @i %i has a namelen (%N) which is @n\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* invalid ea entry->e_value_size */
- { PR_1_ATTR_VALUE_SIZE,
- N_("@a in @i %i has a value size (%N) which is @n\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* invalid ea entry->e_value_offs */
- { PR_1_ATTR_VALUE_OFFSET,
- N_("@a in @i %i has a value offset (%N) which is @n\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* invalid ea entry->e_value_block */
- { PR_1_ATTR_VALUE_BLOCK,
- N_("@a in @i %i has a value @b (%N) which is @n (must be 0)\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* invalid ea entry->e_hash */
- { PR_1_ATTR_HASH,
- N_("@a in @i %i has a hash (%N) which is @n (must be 0)\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Pass 1b errors */
-
- /* Pass 1B: Rescan for duplicate/bad blocks */
- { PR_1B_PASS_HEADER,
- N_("\nRunning additional passes to resolve @bs claimed by more than one @i...\n"
- "Pass 1B: Rescanning for @m @bs\n"),
- PROMPT_NONE, 0 },
-
- /* Duplicate/bad block(s) header */
- { PR_1B_DUP_BLOCK_HEADER,
- N_("@m @b(s) in @i %i:"),
- PROMPT_NONE, 0 },
-
- /* Duplicate/bad block(s) in inode */
- { PR_1B_DUP_BLOCK,
- " %b",
- PROMPT_NONE, PR_LATCH_DBLOCK | PR_PREEN_NOHDR },
-
- /* Duplicate/bad block(s) end */
- { PR_1B_DUP_BLOCK_END,
- "\n",
- PROMPT_NONE, PR_PREEN_NOHDR },
-
- /* Error while scanning inodes */
- { PR_1B_ISCAN_ERROR,
- N_("Error while scanning inodes (%i): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error allocating inode bitmap */
- { PR_1B_ALLOCATE_IBITMAP_ERROR,
- N_("@A @i @B (@i_dup_map): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error while iterating over blocks */
- { PR_1B_BLOCK_ITERATE,
- N_("Error while iterating over @bs in @i %i (%s): %m\n"),
- PROMPT_NONE, 0 },
-
- /* Error adjusting EA refcount */
- { PR_1B_ADJ_EA_REFCOUNT,
- N_("Error adjusting refcount for @a @b %b (@i %i): %m\n"),
- PROMPT_NONE, 0 },
-
-
- /* Pass 1C: Scan directories for inodes with multiply-claimed blocks. */
- { PR_1C_PASS_HEADER,
- N_("Pass 1C: Scanning directories for @is with @m @bs.\n"),
- PROMPT_NONE, 0 },
-
-
- /* Pass 1D: Reconciling multiply-claimed blocks */
- { PR_1D_PASS_HEADER,
- N_("Pass 1D: Reconciling @m @bs\n"),
- PROMPT_NONE, 0 },
-
- /* File has duplicate blocks */
- { PR_1D_DUP_FILE,
- N_("File %Q (@i #%i, mod time %IM)\n"
- " has %B @m @b(s), shared with %N file(s):\n"),
- PROMPT_NONE, 0 },
-
- /* List of files sharing duplicate blocks */
- { PR_1D_DUP_FILE_LIST,
- N_("\t%Q (@i #%i, mod time %IM)\n"),
- PROMPT_NONE, 0 },
-
- /* File sharing blocks with filesystem metadata */
- { PR_1D_SHARE_METADATA,
- N_("\t<@f metadata>\n"),
- PROMPT_NONE, 0 },
-
- /* Report of how many duplicate/bad inodes */
- { PR_1D_NUM_DUP_INODES,
- N_("(There are %N @is containing @m @bs.)\n\n"),
- PROMPT_NONE, 0 },
-
- /* Duplicated blocks already reassigned or cloned. */
- { PR_1D_DUP_BLOCKS_DEALT,
- N_("@m @bs already reassigned or cloned.\n\n"),
- PROMPT_NONE, 0 },
-
- /* Clone duplicate/bad blocks? */
- { PR_1D_CLONE_QUESTION,
- "", PROMPT_CLONE, PR_NO_OK },
-
- /* Delete file? */
- { PR_1D_DELETE_QUESTION,
- "", PROMPT_DELETE, 0 },
-
- /* Couldn't clone file (error) */
- { PR_1D_CLONE_ERROR,
- N_("Couldn't clone file: %m\n"), PROMPT_NONE, 0 },
-
- /* Pass 2 errors */
-
- /* Pass 2: Checking directory structure */
- { PR_2_PASS_HEADER,
- N_("Pass 2: Checking @d structure\n"),
- PROMPT_NONE, 0 },
-
- /* Bad inode number for '.' */
- { PR_2_BAD_INODE_DOT,
- N_("@n @i number for '.' in @d @i %i.\n"),
- PROMPT_FIX, 0 },
-
- /* Directory entry has bad inode number */
- { PR_2_BAD_INO,
- N_("@E has @n @i #: %Di.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Directory entry has deleted or unused inode */
- { PR_2_UNUSED_INODE,
- N_("@E has @D/unused @i %Di. "),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Directry entry is link to '.' */
- { PR_2_LINK_DOT,
- N_("@E @L to '.' "),
- PROMPT_CLEAR, 0 },
-
- /* Directory entry points to inode now located in a bad block */
- { PR_2_BB_INODE,
- N_("@E points to @i (%Di) located in a bad @b.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Directory entry contains a link to a directory */
- { PR_2_LINK_DIR,
- N_("@E @L to @d %P (%Di).\n"),
- PROMPT_CLEAR, 0 },
-
- /* Directory entry contains a link to the root directry */
- { PR_2_LINK_ROOT,
- N_("@E @L to the @r.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Directory entry has illegal characters in its name */
- { PR_2_BAD_NAME,
- N_("@E has illegal characters in its name.\n"),
- PROMPT_FIX, 0 },
-
- /* Missing '.' in directory inode */
- { PR_2_MISSING_DOT,
- N_("Missing '.' in @d @i %i.\n"),
- PROMPT_FIX, 0 },
-
- /* Missing '..' in directory inode */
- { PR_2_MISSING_DOT_DOT,
- N_("Missing '..' in @d @i %i.\n"),
- PROMPT_FIX, 0 },
-
- /* First entry in directory inode doesn't contain '.' */
- { PR_2_1ST_NOT_DOT,
- N_("First @e '%Dn' (@i=%Di) in @d @i %i (%p) @s '.'\n"),
- PROMPT_FIX, 0 },
-
- /* Second entry in directory inode doesn't contain '..' */
- { PR_2_2ND_NOT_DOT_DOT,
- N_("Second @e '%Dn' (@i=%Di) in @d @i %i @s '..'\n"),
- PROMPT_FIX, 0 },
-
- /* i_faddr should be zero */
- { PR_2_FADDR_ZERO,
- N_("i_faddr @F %IF, @s zero.\n"),
- PROMPT_CLEAR, 0 },
-
- /* i_file_acl should be zero */
- { PR_2_FILE_ACL_ZERO,
- N_("i_file_acl @F %If, @s zero.\n"),
- PROMPT_CLEAR, 0 },
-
- /* i_dir_acl should be zero */
- { PR_2_DIR_ACL_ZERO,
- N_("i_dir_acl @F %Id, @s zero.\n"),
- PROMPT_CLEAR, 0 },
-
- /* i_frag should be zero */
- { PR_2_FRAG_ZERO,
- N_("i_frag @F %N, @s zero.\n"),
- PROMPT_CLEAR, 0 },
-
- /* i_fsize should be zero */
- { PR_2_FSIZE_ZERO,
- N_("i_fsize @F %N, @s zero.\n"),
- PROMPT_CLEAR, 0 },
-
- /* inode has bad mode */
- { PR_2_BAD_MODE,
- N_("@i %i (%Q) has @n mode (%Im).\n"),
- PROMPT_CLEAR, 0 },
-
- /* directory corrupted */
- { PR_2_DIR_CORRUPTED,
- N_("@d @i %i, @b %B, offset %N: @d corrupted\n"),
- PROMPT_SALVAGE, 0 },
-
- /* filename too long */
- { PR_2_FILENAME_LONG,
- N_("@d @i %i, @b %B, offset %N: filename too long\n"),
- PROMPT_TRUNCATE, 0 },
-
- /* Directory inode has a missing block (hole) */
- { PR_2_DIRECTORY_HOLE,
- N_("@d @i %i has an unallocated @b #%B. "),
- PROMPT_ALLOCATE, 0 },
-
- /* '.' is not NULL terminated */
- { PR_2_DOT_NULL_TERM,
- N_("'.' @d @e in @d @i %i is not NULL terminated\n"),
- PROMPT_FIX, 0 },
-
- /* '..' is not NULL terminated */
- { PR_2_DOT_DOT_NULL_TERM,
- N_("'..' @d @e in @d @i %i is not NULL terminated\n"),
- PROMPT_FIX, 0 },
-
- /* Illegal character device inode */
- { PR_2_BAD_CHAR_DEV,
- N_("@i %i (%Q) is an @I character @v.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Illegal block device inode */
- { PR_2_BAD_BLOCK_DEV,
- N_("@i %i (%Q) is an @I @b @v.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Duplicate '.' entry */
- { PR_2_DUP_DOT,
- N_("@E is duplicate '.' @e.\n"),
- PROMPT_FIX, 0 },
-
- /* Duplicate '..' entry */
- { PR_2_DUP_DOT_DOT,
- N_("@E is duplicate '..' @e.\n"),
- PROMPT_FIX, 0 },
-
- /* Internal error: couldn't find dir_info */
- { PR_2_NO_DIRINFO,
- N_("Internal error: cannot find dir_info for %i.\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Final rec_len is wrong */
- { PR_2_FINAL_RECLEN,
- N_("@E has rec_len of %Dr, @s %N.\n"),
- PROMPT_FIX, 0 },
-
- /* Error allocating icount structure */
- { PR_2_ALLOCATE_ICOUNT,
- N_("@A icount structure: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error iterating over directory blocks */
- { PR_2_DBLIST_ITERATE,
- N_("Error iterating over @d @bs: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error reading directory block */
- { PR_2_READ_DIRBLOCK,
- N_("Error reading @d @b %b (@i %i): %m\n"),
- PROMPT_CONTINUE, 0 },
-
- /* Error writing directory block */
- { PR_2_WRITE_DIRBLOCK,
- N_("Error writing @d @b %b (@i %i): %m\n"),
- PROMPT_CONTINUE, 0 },
-
- /* Error allocating new directory block */
- { PR_2_ALLOC_DIRBOCK,
- N_("@A new @d @b for @i %i (%s): %m\n"),
- PROMPT_NONE, 0 },
-
- /* Error deallocating inode */
- { PR_2_DEALLOC_INODE,
- N_("Error deallocating @i %i: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Directory entry for '.' is big. Split? */
- { PR_2_SPLIT_DOT,
- N_("@d @e for '.' is big. "),
- PROMPT_SPLIT, PR_NO_OK },
-
- /* Illegal FIFO inode */
- { PR_2_BAD_FIFO,
- N_("@i %i (%Q) is an @I FIFO.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Illegal socket inode */
- { PR_2_BAD_SOCKET,
- N_("@i %i (%Q) is an @I socket.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Directory filetype not set */
- { PR_2_SET_FILETYPE,
- N_("Setting filetype for @E to %N.\n"),
- PROMPT_NONE, PR_PREEN_OK | PR_NO_OK | PR_NO_NOMSG },
-
- /* Directory filetype incorrect */
- { PR_2_BAD_FILETYPE,
- N_("@E has an incorrect filetype (was %Dt, @s %N).\n"),
- PROMPT_FIX, 0 },
-
- /* Directory filetype set on filesystem */
- { PR_2_CLEAR_FILETYPE,
- N_("@E has filetype set.\n"),
- PROMPT_CLEAR, PR_PREEN_OK },
-
- /* Directory filename is null */
- { PR_2_NULL_NAME,
- N_("@E has a @z name.\n"),
- PROMPT_CLEAR, 0 },
-
- /* Invalid symlink */
- { PR_2_INVALID_SYMLINK,
- N_("Symlink %Q (@i #%i) is @n.\n"),
- PROMPT_CLEAR, 0 },
-
- /* i_file_acl (extended attribute block) is bad */
- { PR_2_FILE_ACL_BAD,
- N_("@a @b @F @n (%If).\n"),
- PROMPT_CLEAR, 0 },
-
- /* Filesystem contains large files, but has no such flag in sb */
- { PR_2_FEATURE_LARGE_FILES,
- N_("@f contains large files, but lacks LARGE_FILE flag in @S.\n"),
- PROMPT_FIX, 0 },
-
- /* Node in HTREE directory not referenced */
- { PR_2_HTREE_NOTREF,
- N_("@p @h %d: node (%B) not referenced\n"),
- PROMPT_NONE, 0 },
-
- /* Node in HTREE directory referenced twice */
- { PR_2_HTREE_DUPREF,
- N_("@p @h %d: node (%B) referenced twice\n"),
- PROMPT_NONE, 0 },
-
- /* Node in HTREE directory has bad min hash */
- { PR_2_HTREE_MIN_HASH,
- N_("@p @h %d: node (%B) has bad min hash\n"),
- PROMPT_NONE, 0 },
-
- /* Node in HTREE directory has bad max hash */
- { PR_2_HTREE_MAX_HASH,
- N_("@p @h %d: node (%B) has bad max hash\n"),
- PROMPT_NONE, 0 },
-
- /* Clear invalid HTREE directory */
- { PR_2_HTREE_CLEAR,
- N_("@n @h %d (%q). "), PROMPT_CLEAR, 0 },
-
- /* Bad block in htree interior node */
- { PR_2_HTREE_BADBLK,
- N_("@p @h %d (%q): bad @b number %b.\n"),
- PROMPT_CLEAR_HTREE, 0 },
-
- /* Error adjusting EA refcount */
- { PR_2_ADJ_EA_REFCOUNT,
- N_("Error adjusting refcount for @a @b %b (@i %i): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Invalid HTREE root node */
- { PR_2_HTREE_BAD_ROOT,
- N_("@p @h %d: root node is @n\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Invalid HTREE limit */
- { PR_2_HTREE_BAD_LIMIT,
- N_("@p @h %d: node (%B) has @n limit (%N)\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Invalid HTREE count */
- { PR_2_HTREE_BAD_COUNT,
- N_("@p @h %d: node (%B) has @n count (%N)\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* HTREE interior node has out-of-order hashes in table */
- { PR_2_HTREE_HASH_ORDER,
- N_("@p @h %d: node (%B) has an unordered hash table\n"),
- PROMPT_CLEAR_HTREE, PR_PREEN_OK },
-
- /* Node in HTREE directory has invalid depth */
- { PR_2_HTREE_BAD_DEPTH,
- N_("@p @h %d: node (%B) has @n depth\n"),
- PROMPT_NONE, 0 },
-
- /* Duplicate directory entry found */
- { PR_2_DUPLICATE_DIRENT,
- N_("Duplicate @E found. "),
- PROMPT_CLEAR, 0 },
-
- /* Non-unique filename found */
- { PR_2_NON_UNIQUE_FILE, /* xgettext: no-c-format */
- N_("@E has a non-unique filename.\nRename to %s"),
- PROMPT_NULL, 0 },
-
- /* Duplicate directory entry found */
- { PR_2_REPORT_DUP_DIRENT,
- N_("Duplicate @e '%Dn' found.\n\tMarking %p (%i) to be rebuilt.\n\n"),
- PROMPT_NONE, 0 },
-
- /* Pass 3 errors */
-
- /* Pass 3: Checking directory connectivity */
- { PR_3_PASS_HEADER,
- N_("Pass 3: Checking @d connectivity\n"),
- PROMPT_NONE, 0 },
-
- /* Root inode not allocated */
- { PR_3_NO_ROOT_INODE,
- N_("@r not allocated. "),
- PROMPT_ALLOCATE, 0 },
-
- /* No room in lost+found */
- { PR_3_EXPAND_LF_DIR,
- N_("No room in @l @d. "),
- PROMPT_EXPAND, 0 },
-
- /* Unconnected directory inode */
- { PR_3_UNCONNECTED_DIR,
- N_("Unconnected @d @i %i (%p)\n"),
- PROMPT_CONNECT, 0 },
-
- /* /lost+found not found */
- { PR_3_NO_LF_DIR,
- N_("/@l not found. "),
- PROMPT_CREATE, PR_PREEN_OK },
-
- /* .. entry is incorrect */
- { PR_3_BAD_DOT_DOT,
- N_("'..' in %Q (%i) is %P (%j), @s %q (%d).\n"),
- PROMPT_FIX, 0 },
-
- /* Bad or non-existent /lost+found. Cannot reconnect */
- { PR_3_NO_LPF,
- N_("Bad or non-existent /@l. Cannot reconnect.\n"),
- PROMPT_NONE, 0 },
-
- /* Could not expand /lost+found */
- { PR_3_CANT_EXPAND_LPF,
- N_("Could not expand /@l: %m\n"),
- PROMPT_NONE, 0 },
-
- /* Could not reconnect inode */
- { PR_3_CANT_RECONNECT,
- N_("Could not reconnect %i: %m\n"),
- PROMPT_NONE, 0 },
-
- /* Error while trying to find /lost+found */
- { PR_3_ERR_FIND_LPF,
- N_("Error while trying to find /@l: %m\n"),
- PROMPT_NONE, 0 },
-
- /* Error in ext2fs_new_block while creating /lost+found */
- { PR_3_ERR_LPF_NEW_BLOCK,
- N_("ext2fs_new_@b: %m while trying to create /@l @d\n"),
- PROMPT_NONE, 0 },
-
- /* Error in ext2fs_new_inode while creating /lost+found */
- { PR_3_ERR_LPF_NEW_INODE,
- N_("ext2fs_new_@i: %m while trying to create /@l @d\n"),
- PROMPT_NONE, 0 },
-
- /* Error in ext2fs_new_dir_block while creating /lost+found */
- { PR_3_ERR_LPF_NEW_DIR_BLOCK,
- N_("ext2fs_new_dir_@b: %m while creating new @d @b\n"),
- PROMPT_NONE, 0 },
-
- /* Error while writing directory block for /lost+found */
- { PR_3_ERR_LPF_WRITE_BLOCK,
- N_("ext2fs_write_dir_@b: %m while writing the @d @b for /@l\n"),
- PROMPT_NONE, 0 },
-
- /* Error while adjusting inode count */
- { PR_3_ADJUST_INODE,
- N_("Error while adjusting @i count on @i %i\n"),
- PROMPT_NONE, 0 },
-
- /* Couldn't fix parent directory -- error */
- { PR_3_FIX_PARENT_ERR,
- N_("Couldn't fix parent of @i %i: %m\n\n"),
- PROMPT_NONE, 0 },
-
- /* Couldn't fix parent directory -- couldn't find it */
- { PR_3_FIX_PARENT_NOFIND,
- N_("Couldn't fix parent of @i %i: Couldn't find parent @d @e\n\n"),
- PROMPT_NONE, 0 },
-
- /* Error allocating inode bitmap */
- { PR_3_ALLOCATE_IBITMAP_ERROR,
- N_("@A @i @B (%N): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error creating root directory */
- { PR_3_CREATE_ROOT_ERROR,
- N_("Error creating root @d (%s): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error creating lost and found directory */
- { PR_3_CREATE_LPF_ERROR,
- N_("Error creating /@l @d (%s): %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Root inode is not directory; aborting */
- { PR_3_ROOT_NOT_DIR_ABORT,
- N_("@r is not a @d; aborting.\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Cannot proceed without a root inode. */
- { PR_3_NO_ROOT_INODE_ABORT,
- N_("Cannot proceed without a @r.\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Internal error: couldn't find dir_info */
- { PR_3_NO_DIRINFO,
- N_("Internal error: cannot find dir_info for %i.\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Lost+found not a directory */
- { PR_3_LPF_NOTDIR,
- N_("/@l is not a @d (ino=%i)\n"),
- PROMPT_UNLINK, 0 },
-
- /* Pass 3A Directory Optimization */
-
- /* Pass 3A: Optimizing directories */
- { PR_3A_PASS_HEADER,
- N_("Pass 3A: Optimizing directories\n"),
- PROMPT_NONE, PR_PREEN_NOMSG },
-
- /* Error iterating over directories */
- { PR_3A_OPTIMIZE_ITER,
- N_("Failed to create dirs_to_hash iterator: %m"),
- PROMPT_NONE, 0 },
-
- /* Error rehash directory */
- { PR_3A_OPTIMIZE_DIR_ERR,
- N_("Failed to optimize directory %q (%d): %m"),
- PROMPT_NONE, 0 },
-
- /* Rehashing dir header */
- { PR_3A_OPTIMIZE_DIR_HEADER,
- N_("Optimizing directories: "),
- PROMPT_NONE, PR_MSG_ONLY },
-
- /* Rehashing directory %d */
- { PR_3A_OPTIMIZE_DIR,
- " %d",
- PROMPT_NONE, PR_LATCH_OPTIMIZE_DIR | PR_PREEN_NOHDR},
-
- /* Rehashing dir end */
- { PR_3A_OPTIMIZE_DIR_END,
- "\n",
- PROMPT_NONE, PR_PREEN_NOHDR },
-
- /* Pass 4 errors */
-
- /* Pass 4: Checking reference counts */
- { PR_4_PASS_HEADER,
- N_("Pass 4: Checking reference counts\n"),
- PROMPT_NONE, 0 },
-
- /* Unattached zero-length inode */
- { PR_4_ZERO_LEN_INODE,
- N_("@u @z @i %i. "),
- PROMPT_CLEAR, PR_PREEN_OK|PR_NO_OK },
-
- /* Unattached inode */
- { PR_4_UNATTACHED_INODE,
- N_("@u @i %i\n"),
- PROMPT_CONNECT, 0 },
-
- /* Inode ref count wrong */
- { PR_4_BAD_REF_COUNT,
- N_("@i %i ref count is %Il, @s %N. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- { PR_4_INCONSISTENT_COUNT,
- N_("WARNING: PROGRAMMING BUG IN E2FSCK!\n"
- "\tOR SOME BONEHEAD (YOU) IS CHECKING A MOUNTED (LIVE) FILESYSTEM.\n"
- "@i_link_info[%i] is %N, @i.i_links_count is %Il. "
- "They @s the same!\n"),
- PROMPT_NONE, 0 },
-
- /* Pass 5 errors */
-
- /* Pass 5: Checking group summary information */
- { PR_5_PASS_HEADER,
- N_("Pass 5: Checking @g summary information\n"),
- PROMPT_NONE, 0 },
-
- /* Padding at end of inode bitmap is not set. */
- { PR_5_INODE_BMAP_PADDING,
- N_("Padding at end of @i @B is not set. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Padding at end of block bitmap is not set. */
- { PR_5_BLOCK_BMAP_PADDING,
- N_("Padding at end of @b @B is not set. "),
- PROMPT_FIX, PR_PREEN_OK },
-
- /* Block bitmap differences header */
- { PR_5_BLOCK_BITMAP_HEADER,
- N_("@b @B differences: "),
- PROMPT_NONE, PR_PREEN_OK | PR_PREEN_NOMSG},
-
- /* Block not used, but marked in bitmap */
- { PR_5_BLOCK_UNUSED,
- " -%b",
- PROMPT_NONE, PR_LATCH_BBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Block used, but not marked used in bitmap */
- { PR_5_BLOCK_USED,
- " +%b",
- PROMPT_NONE, PR_LATCH_BBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Block bitmap differences end */
- { PR_5_BLOCK_BITMAP_END,
- "\n",
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Inode bitmap differences header */
- { PR_5_INODE_BITMAP_HEADER,
- N_("@i @B differences: "),
- PROMPT_NONE, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Inode not used, but marked in bitmap */
- { PR_5_INODE_UNUSED,
- " -%i",
- PROMPT_NONE, PR_LATCH_IBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Inode used, but not marked used in bitmap */
- { PR_5_INODE_USED,
- " +%i",
- PROMPT_NONE, PR_LATCH_IBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Inode bitmap differences end */
- { PR_5_INODE_BITMAP_END,
- "\n",
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Free inodes count for group wrong */
- { PR_5_FREE_INODE_COUNT_GROUP,
- N_("Free @is count wrong for @g #%g (%i, counted=%j).\n"),
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Directories count for group wrong */
- { PR_5_FREE_DIR_COUNT_GROUP,
- N_("Directories count wrong for @g #%g (%i, counted=%j).\n"),
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Free inodes count wrong */
- { PR_5_FREE_INODE_COUNT,
- N_("Free @is count wrong (%i, counted=%j).\n"),
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Free blocks count for group wrong */
- { PR_5_FREE_BLOCK_COUNT_GROUP,
- N_("Free @bs count wrong for @g #%g (%b, counted=%c).\n"),
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Free blocks count wrong */
- { PR_5_FREE_BLOCK_COUNT,
- N_("Free @bs count wrong (%b, counted=%c).\n"),
- PROMPT_FIX, PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Programming error: bitmap endpoints don't match */
- { PR_5_BMAP_ENDPOINTS,
- N_("PROGRAMMING ERROR: @f (#%N) @B endpoints (%b, %c) don't "
- "match calculated @B endpoints (%i, %j)\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Internal error: fudging end of bitmap */
- { PR_5_FUDGE_BITMAP_ERROR,
- N_("Internal error: fudging end of bitmap (%N)\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error copying in replacement inode bitmap */
- { PR_5_COPY_IBITMAP_ERROR,
- N_("Error copying in replacement @i @B: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Error copying in replacement block bitmap */
- { PR_5_COPY_BBITMAP_ERROR,
- N_("Error copying in replacement @b @B: %m\n"),
- PROMPT_NONE, PR_FATAL },
-
- /* Block range not used, but marked in bitmap */
- { PR_5_BLOCK_RANGE_UNUSED,
- " -(%b--%c)",
- PROMPT_NONE, PR_LATCH_BBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Block range used, but not marked used in bitmap */
- { PR_5_BLOCK_RANGE_USED,
- " +(%b--%c)",
- PROMPT_NONE, PR_LATCH_BBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Inode range not used, but marked in bitmap */
- { PR_5_INODE_RANGE_UNUSED,
- " -(%i--%j)",
- PROMPT_NONE, PR_LATCH_IBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- /* Inode range used, but not marked used in bitmap */
- { PR_5_INODE_RANGE_USED,
- " +(%i--%j)",
- PROMPT_NONE, PR_LATCH_IBITMAP | PR_PREEN_OK | PR_PREEN_NOMSG },
-
- { 0 }
-};
-
-/*
- * This is the latch flags register. It allows several problems to be
- * "latched" together. This means that the user has to answer but one
- * question for the set of problems, and all of the associated
- * problems will be either fixed or not fixed.
- */
-static struct latch_descr pr_latch_info[] = {
- { PR_LATCH_BLOCK, PR_1_INODE_BLOCK_LATCH, 0 },
- { PR_LATCH_BBLOCK, PR_1_INODE_BBLOCK_LATCH, 0 },
- { PR_LATCH_IBITMAP, PR_5_INODE_BITMAP_HEADER, PR_5_INODE_BITMAP_END },
- { PR_LATCH_BBITMAP, PR_5_BLOCK_BITMAP_HEADER, PR_5_BLOCK_BITMAP_END },
- { PR_LATCH_RELOC, PR_0_RELOCATE_HINT, 0 },
- { PR_LATCH_DBLOCK, PR_1B_DUP_BLOCK_HEADER, PR_1B_DUP_BLOCK_END },
- { PR_LATCH_LOW_DTIME, PR_1_ORPHAN_LIST_REFUGEES, 0 },
- { PR_LATCH_TOOBIG, PR_1_INODE_TOOBIG, 0 },
- { PR_LATCH_OPTIMIZE_DIR, PR_3A_OPTIMIZE_DIR_HEADER, PR_3A_OPTIMIZE_DIR_END },
- { -1, 0, 0 },
-};
-
-static const struct e2fsck_problem *find_problem(problem_t code)
-{
- int i;
-
- for (i=0; problem_table[i].e2p_code; i++) {
- if (problem_table[i].e2p_code == code)
- return &problem_table[i];
- }
- return 0;
-}
-
-static struct latch_descr *find_latch(int code)
-{
- int i;
-
- for (i=0; pr_latch_info[i].latch_code >= 0; i++) {
- if (pr_latch_info[i].latch_code == code)
- return &pr_latch_info[i];
- }
- return 0;
-}
-
-int end_problem_latch(e2fsck_t ctx, int mask)
-{
- struct latch_descr *ldesc;
- struct problem_context pctx;
- int answer = -1;
-
- ldesc = find_latch(mask);
- if (ldesc->end_message && (ldesc->flags & PRL_LATCHED)) {
- clear_problem_context(&pctx);
- answer = fix_problem(ctx, ldesc->end_message, &pctx);
- }
- ldesc->flags &= ~(PRL_VARIABLE);
- return answer;
-}
-
-int set_latch_flags(int mask, int setflags, int clearflags)
-{
- struct latch_descr *ldesc;
-
- ldesc = find_latch(mask);
- if (!ldesc)
- return -1;
- ldesc->flags |= setflags;
- ldesc->flags &= ~clearflags;
- return 0;
-}
-
-void clear_problem_context(struct problem_context *ctx)
-{
- memset(ctx, 0, sizeof(struct problem_context));
- ctx->blkcount = -1;
- ctx->group = -1;
-}
-
-int fix_problem(e2fsck_t ctx, problem_t code, struct problem_context *pctx)
-{
- ext2_filsys fs = ctx->fs;
- const struct e2fsck_problem *ptr;
- struct latch_descr *ldesc = 0;
- const char *message;
- int def_yn, answer, ans;
- int print_answer = 0;
- int suppress = 0;
-
- ptr = find_problem(code);
- if (!ptr) {
- printf(_("Unhandled error code (0x%x)!\n"), code);
- return 0;
- }
- def_yn = 1;
- if ((ptr->flags & PR_NO_DEFAULT) ||
- ((ptr->flags & PR_PREEN_NO) && (ctx->options & E2F_OPT_PREEN)) ||
- (ctx->options & E2F_OPT_NO))
- def_yn= 0;
-
- /*
- * Do special latch processing. This is where we ask the
- * latch question, if it exists
- */
- if (ptr->flags & PR_LATCH_MASK) {
- ldesc = find_latch(ptr->flags & PR_LATCH_MASK);
- if (ldesc->question && !(ldesc->flags & PRL_LATCHED)) {
- ans = fix_problem(ctx, ldesc->question, pctx);
- if (ans == 1)
- ldesc->flags |= PRL_YES;
- if (ans == 0)
- ldesc->flags |= PRL_NO;
- ldesc->flags |= PRL_LATCHED;
- }
- if (ldesc->flags & PRL_SUPPRESS)
- suppress++;
- }
- if ((ptr->flags & PR_PREEN_NOMSG) &&
- (ctx->options & E2F_OPT_PREEN))
- suppress++;
- if ((ptr->flags & PR_NO_NOMSG) &&
- (ctx->options & E2F_OPT_NO))
- suppress++;
- if (!suppress) {
- message = ptr->e2p_description;
- if ((ctx->options & E2F_OPT_PREEN) &&
- !(ptr->flags & PR_PREEN_NOHDR)) {
- printf("%s: ", ctx->device_name ?
- ctx->device_name : ctx->filesystem_name);
- }
- if (*message)
- print_e2fsck_message(ctx, _(message), pctx, 1);
- }
- if (!(ptr->flags & PR_PREEN_OK) && (ptr->prompt != PROMPT_NONE))
- preenhalt(ctx);
-
- if (ptr->flags & PR_FATAL)
- bb_error_msg_and_die(0);
-
- if (ptr->prompt == PROMPT_NONE) {
- if (ptr->flags & PR_NOCOLLATE)
- answer = -1;
- else
- answer = def_yn;
- } else {
- if (ctx->options & E2F_OPT_PREEN) {
- answer = def_yn;
- if (!(ptr->flags & PR_PREEN_NOMSG))
- print_answer = 1;
- } else if ((ptr->flags & PR_LATCH_MASK) &&
- (ldesc->flags & (PRL_YES | PRL_NO))) {
- if (!suppress)
- print_answer = 1;
- if (ldesc->flags & PRL_YES)
- answer = 1;
- else
- answer = 0;
- } else
- answer = ask(ctx, _(prompt[(int) ptr->prompt]), def_yn);
- if (!answer && !(ptr->flags & PR_NO_OK))
- ext2fs_unmark_valid(fs);
-
- if (print_answer)
- printf("%s.\n", answer ?
- _(preen_msg[(int) ptr->prompt]) : _("IGNORED"));
-
- }
-
- if ((ptr->prompt == PROMPT_ABORT) && answer)
- bb_error_msg_and_die(0);
-
- if (ptr->flags & PR_AFTER_CODE)
- answer = fix_problem(ctx, ptr->second_code, pctx);
-
- return answer;
-}
-
-/*
- * linux/fs/recovery.c
- *
- * Written by Stephen C. Tweedie <sct@redhat.com>, 1999
- */
-
-/*
- * Maintain information about the progress of the recovery job, so that
- * the different passes can carry information between them.
- */
-struct recovery_info
-{
- tid_t start_transaction;
- tid_t end_transaction;
-
- int nr_replays;
- int nr_revokes;
- int nr_revoke_hits;
-};
-
-enum passtype {PASS_SCAN, PASS_REVOKE, PASS_REPLAY};
-static int do_one_pass(journal_t *journal,
- struct recovery_info *info, enum passtype pass);
-static int scan_revoke_records(journal_t *, struct buffer_head *,
- tid_t, struct recovery_info *);
-
-/*
- * Read a block from the journal
- */
-
-static int jread(struct buffer_head **bhp, journal_t *journal,
- unsigned int offset)
-{
- int err;
- unsigned long blocknr;
- struct buffer_head *bh;
-
- *bhp = NULL;
-
- err = journal_bmap(journal, offset, &blocknr);
-
- if (err) {
- printf("JBD: bad block at offset %u\n", offset);
- return err;
- }
-
- bh = getblk(journal->j_dev, blocknr, journal->j_blocksize);
- if (!bh)
- return -ENOMEM;
-
- if (!buffer_uptodate(bh)) {
- /* If this is a brand new buffer, start readahead.
- Otherwise, we assume we are already reading it. */
- if (!buffer_req(bh))
- do_readahead(journal, offset);
- wait_on_buffer(bh);
- }
-
- if (!buffer_uptodate(bh)) {
- printf("JBD: Failed to read block at offset %u\n", offset);
- brelse(bh);
- return -EIO;
- }
-
- *bhp = bh;
- return 0;
-}
-
-
-/*
- * Count the number of in-use tags in a journal descriptor block.
- */
-
-static int count_tags(struct buffer_head *bh, int size)
-{
- char * tagp;
- journal_block_tag_t * tag;
- int nr = 0;
-
- tagp = &bh->b_data[sizeof(journal_header_t)];
-
- while ((tagp - bh->b_data + sizeof(journal_block_tag_t)) <= size) {
- tag = (journal_block_tag_t *) tagp;
-
- nr++;
- tagp += sizeof(journal_block_tag_t);
- if (!(tag->t_flags & htonl(JFS_FLAG_SAME_UUID)))
- tagp += 16;
-
- if (tag->t_flags & htonl(JFS_FLAG_LAST_TAG))
- break;
- }
-
- return nr;
-}
-
-
-/* Make sure we wrap around the log correctly! */
-#define wrap(journal, var) \
-do { \
- if (var >= (journal)->j_last) \
- var -= ((journal)->j_last - (journal)->j_first); \
-} while (0)
-
-/**
- * int journal_recover(journal_t *journal) - recovers a on-disk journal
- * @journal: the journal to recover
- *
- * The primary function for recovering the log contents when mounting a
- * journaled device.
- *
- * Recovery is done in three passes. In the first pass, we look for the
- * end of the log. In the second, we assemble the list of revoke
- * blocks. In the third and final pass, we replay any un-revoked blocks
- * in the log.
- */
-int journal_recover(journal_t *journal)
-{
- int err;
- journal_superblock_t * sb;
-
- struct recovery_info info;
-
- memset(&info, 0, sizeof(info));
- sb = journal->j_superblock;
-
- /*
- * The journal superblock's s_start field (the current log head)
- * is always zero if, and only if, the journal was cleanly
- * unmounted.
- */
-
- if (!sb->s_start) {
- journal->j_transaction_sequence = ntohl(sb->s_sequence) + 1;
- return 0;
- }
-
- err = do_one_pass(journal, &info, PASS_SCAN);
- if (!err)
- err = do_one_pass(journal, &info, PASS_REVOKE);
- if (!err)
- err = do_one_pass(journal, &info, PASS_REPLAY);
-
- /* Restart the log at the next transaction ID, thus invalidating
- * any existing commit records in the log. */
- journal->j_transaction_sequence = ++info.end_transaction;
-
- journal_clear_revoke(journal);
- sync_blockdev(journal->j_fs_dev);
- return err;
-}
-
-static int do_one_pass(journal_t *journal,
- struct recovery_info *info, enum passtype pass)
-{
- unsigned int first_commit_ID, next_commit_ID;
- unsigned long next_log_block;
- int err, success = 0;
- journal_superblock_t * sb;
- journal_header_t * tmp;
- struct buffer_head * bh;
- unsigned int sequence;
- int blocktype;
-
- /* Precompute the maximum metadata descriptors in a descriptor block */
- int MAX_BLOCKS_PER_DESC;
- MAX_BLOCKS_PER_DESC = ((journal->j_blocksize-sizeof(journal_header_t))
- / sizeof(journal_block_tag_t));
-
- /*
- * First thing is to establish what we expect to find in the log
- * (in terms of transaction IDs), and where (in terms of log
- * block offsets): query the superblock.
- */
-
- sb = journal->j_superblock;
- next_commit_ID = ntohl(sb->s_sequence);
- next_log_block = ntohl(sb->s_start);
-
- first_commit_ID = next_commit_ID;
- if (pass == PASS_SCAN)
- info->start_transaction = first_commit_ID;
-
- /*
- * Now we walk through the log, transaction by transaction,
- * making sure that each transaction has a commit block in the
- * expected place. Each complete transaction gets replayed back
- * into the main filesystem.
- */
-
- while (1) {
- int flags;
- char * tagp;
- journal_block_tag_t * tag;
- struct buffer_head * obh;
- struct buffer_head * nbh;
-
- /* If we already know where to stop the log traversal,
- * check right now that we haven't gone past the end of
- * the log. */
-
- if (pass != PASS_SCAN)
- if (tid_geq(next_commit_ID, info->end_transaction))
- break;
-
- /* Skip over each chunk of the transaction looking
- * either the next descriptor block or the final commit
- * record. */
-
- err = jread(&bh, journal, next_log_block);
- if (err)
- goto failed;
-
- next_log_block++;
- wrap(journal, next_log_block);
-
- /* What kind of buffer is it?
- *
- * If it is a descriptor block, check that it has the
- * expected sequence number. Otherwise, we're all done
- * here. */
-
- tmp = (journal_header_t *)bh->b_data;
-
- if (tmp->h_magic != htonl(JFS_MAGIC_NUMBER)) {
- brelse(bh);
- break;
- }
-
- blocktype = ntohl(tmp->h_blocktype);
- sequence = ntohl(tmp->h_sequence);
-
- if (sequence != next_commit_ID) {
- brelse(bh);
- break;
- }
-
- /* OK, we have a valid descriptor block which matches
- * all of the sequence number checks. What are we going
- * to do with it? That depends on the pass... */
-
- switch(blocktype) {
- case JFS_DESCRIPTOR_BLOCK:
- /* If it is a valid descriptor block, replay it
- * in pass REPLAY; otherwise, just skip over the
- * blocks it describes. */
- if (pass != PASS_REPLAY) {
- next_log_block +=
- count_tags(bh, journal->j_blocksize);
- wrap(journal, next_log_block);
- brelse(bh);
- continue;
- }
-
- /* A descriptor block: we can now write all of
- * the data blocks. Yay, useful work is finally
- * getting done here! */
-
- tagp = &bh->b_data[sizeof(journal_header_t)];
- while ((tagp - bh->b_data +sizeof(journal_block_tag_t))
- <= journal->j_blocksize) {
- unsigned long io_block;
-
- tag = (journal_block_tag_t *) tagp;
- flags = ntohl(tag->t_flags);
-
- io_block = next_log_block++;
- wrap(journal, next_log_block);
- err = jread(&obh, journal, io_block);
- if (err) {
- /* Recover what we can, but
- * report failure at the end. */
- success = err;
- printf("JBD: IO error %d recovering "
- "block %ld in log\n",
- err, io_block);
- } else {
- unsigned long blocknr;
-
- blocknr = ntohl(tag->t_blocknr);
-
- /* If the block has been
- * revoked, then we're all done
- * here. */
- if (journal_test_revoke
- (journal, blocknr,
- next_commit_ID)) {
- brelse(obh);
- ++info->nr_revoke_hits;
- goto skip_write;
- }
-
- /* Find a buffer for the new
- * data being restored */
- nbh = getblk(journal->j_fs_dev,
- blocknr,
- journal->j_blocksize);
- if (nbh == NULL) {
- printf("JBD: Out of memory "
- "during recovery.\n");
- err = -ENOMEM;
- brelse(bh);
- brelse(obh);
- goto failed;
- }
-
- lock_buffer(nbh);
- memcpy(nbh->b_data, obh->b_data,
- journal->j_blocksize);
- if (flags & JFS_FLAG_ESCAPE) {
- *((unsigned int *)bh->b_data) =
- htonl(JFS_MAGIC_NUMBER);
- }
-
- mark_buffer_uptodate(nbh, 1);
- mark_buffer_dirty(nbh);
- ++info->nr_replays;
- /* ll_rw_block(WRITE, 1, &nbh); */
- unlock_buffer(nbh);
- brelse(obh);
- brelse(nbh);
- }
-
- skip_write:
- tagp += sizeof(journal_block_tag_t);
- if (!(flags & JFS_FLAG_SAME_UUID))
- tagp += 16;
-
- if (flags & JFS_FLAG_LAST_TAG)
- break;
- }
-
- brelse(bh);
- continue;
-
- case JFS_COMMIT_BLOCK:
- /* Found an expected commit block: not much to
- * do other than move on to the next sequence
- * number. */
- brelse(bh);
- next_commit_ID++;
- continue;
-
- case JFS_REVOKE_BLOCK:
- /* If we aren't in the REVOKE pass, then we can
- * just skip over this block. */
- if (pass != PASS_REVOKE) {
- brelse(bh);
- continue;
- }
-
- err = scan_revoke_records(journal, bh,
- next_commit_ID, info);
- brelse(bh);
- if (err)
- goto failed;
- continue;
-
- default:
- goto done;
- }
- }
-
- done:
- /*
- * We broke out of the log scan loop: either we came to the
- * known end of the log or we found an unexpected block in the
- * log. If the latter happened, then we know that the "current"
- * transaction marks the end of the valid log.
- */
-
- if (pass == PASS_SCAN)
- info->end_transaction = next_commit_ID;
- else {
- /* It's really bad news if different passes end up at
- * different places (but possible due to IO errors). */
- if (info->end_transaction != next_commit_ID) {
- printf("JBD: recovery pass %d ended at "
- "transaction %u, expected %u\n",
- pass, next_commit_ID, info->end_transaction);
- if (!success)
- success = -EIO;
- }
- }
-
- return success;
-
- failed:
- return err;
-}
-
-
-/* Scan a revoke record, marking all blocks mentioned as revoked. */
-
-static int scan_revoke_records(journal_t *journal, struct buffer_head *bh,
- tid_t sequence, struct recovery_info *info)
-{
- journal_revoke_header_t *header;
- int offset, max;
-
- header = (journal_revoke_header_t *) bh->b_data;
- offset = sizeof(journal_revoke_header_t);
- max = ntohl(header->r_count);
-
- while (offset < max) {
- unsigned long blocknr;
- int err;
-
- blocknr = ntohl(* ((unsigned int *) (bh->b_data+offset)));
- offset += 4;
- err = journal_set_revoke(journal, blocknr, sequence);
- if (err)
- return err;
- ++info->nr_revokes;
- }
- return 0;
-}
-
-
-/*
- * rehash.c --- rebuild hash tree directories
- *
- * This algorithm is designed for simplicity of implementation and to
- * pack the directory as much as possible. It however requires twice
- * as much memory as the size of the directory. The maximum size
- * directory supported using a 4k blocksize is roughly a gigabyte, and
- * so there may very well be problems with machines that don't have
- * virtual memory, and obscenely large directories.
- *
- * An alternate algorithm which is much more disk intensive could be
- * written, and probably will need to be written in the future. The
- * design goals of such an algorithm are: (a) use (roughly) constant
- * amounts of memory, no matter how large the directory, (b) the
- * directory must be safe at all times, even if e2fsck is interrupted
- * in the middle, (c) we must use minimal amounts of extra disk
- * blocks. This pretty much requires an incremental approach, where
- * we are reading from one part of the directory, and inserting into
- * the front half. So the algorithm will have to keep track of a
- * moving block boundary between the new tree and the old tree, and
- * files will need to be moved from the old directory and inserted
- * into the new tree. If the new directory requires space which isn't
- * yet available, blocks from the beginning part of the old directory
- * may need to be moved to the end of the directory to make room for
- * the new tree:
- *
- * --------------------------------------------------------
- * | new tree | | old tree |
- * --------------------------------------------------------
- * ^ ptr ^ptr
- * tail new head old
- *
- * This is going to be a pain in the tuckus to implement, and will
- * require a lot more disk accesses. So I'm going to skip it for now;
- * it's only really going to be an issue for really, really big
- * filesystems (when we reach the level of tens of millions of files
- * in a single directory). It will probably be easier to simply
- * require that e2fsck use VM first.
- */
-
-struct fill_dir_struct {
- char *buf;
- struct ext2_inode *inode;
- int err;
- e2fsck_t ctx;
- struct hash_entry *harray;
- int max_array, num_array;
- int dir_size;
- int compress;
- ino_t parent;
-};
-
-struct hash_entry {
- ext2_dirhash_t hash;
- ext2_dirhash_t minor_hash;
- struct ext2_dir_entry *dir;
-};
-
-struct out_dir {
- int num;
- int max;
- char *buf;
- ext2_dirhash_t *hashes;
-};
-
-static int fill_dir_block(ext2_filsys fs,
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct fill_dir_struct *fd = (struct fill_dir_struct *) priv_data;
- struct hash_entry *new_array, *ent;
- struct ext2_dir_entry *dirent;
- char *dir;
- unsigned int offset, dir_offset;
-
- if (blockcnt < 0)
- return 0;
-
- offset = blockcnt * fs->blocksize;
- if (offset + fs->blocksize > fd->inode->i_size) {
- fd->err = EXT2_ET_DIR_CORRUPTED;
- return BLOCK_ABORT;
- }
- dir = (fd->buf+offset);
- if (HOLE_BLKADDR(*block_nr)) {
- memset(dir, 0, fs->blocksize);
- dirent = (struct ext2_dir_entry *) dir;
- dirent->rec_len = fs->blocksize;
- } else {
- fd->err = ext2fs_read_dir_block(fs, *block_nr, dir);
- if (fd->err)
- return BLOCK_ABORT;
- }
- /* While the directory block is "hot", index it. */
- dir_offset = 0;
- while (dir_offset < fs->blocksize) {
- dirent = (struct ext2_dir_entry *) (dir + dir_offset);
- if (((dir_offset + dirent->rec_len) > fs->blocksize) ||
- (dirent->rec_len < 8) ||
- ((dirent->rec_len % 4) != 0) ||
- (((dirent->name_len & 0xFF)+8) > dirent->rec_len)) {
- fd->err = EXT2_ET_DIR_CORRUPTED;
- return BLOCK_ABORT;
- }
- dir_offset += dirent->rec_len;
- if (dirent->inode == 0)
- continue;
- if (!fd->compress && ((dirent->name_len&0xFF) == 1) &&
- (dirent->name[0] == '.'))
- continue;
- if (!fd->compress && ((dirent->name_len&0xFF) == 2) &&
- (dirent->name[0] == '.') && (dirent->name[1] == '.')) {
- fd->parent = dirent->inode;
- continue;
- }
- if (fd->num_array >= fd->max_array) {
- new_array = realloc(fd->harray,
- sizeof(struct hash_entry) * (fd->max_array+500));
- if (!new_array) {
- fd->err = ENOMEM;
- return BLOCK_ABORT;
- }
- fd->harray = new_array;
- fd->max_array += 500;
- }
- ent = fd->harray + fd->num_array++;
- ent->dir = dirent;
- fd->dir_size += EXT2_DIR_REC_LEN(dirent->name_len & 0xFF);
- if (fd->compress)
- ent->hash = ent->minor_hash = 0;
- else {
- fd->err = ext2fs_dirhash(fs->super->s_def_hash_version,
- dirent->name,
- dirent->name_len & 0xFF,
- fs->super->s_hash_seed,
- &ent->hash, &ent->minor_hash);
- if (fd->err)
- return BLOCK_ABORT;
- }
- }
-
- return 0;
-}
-
-/* Used for sorting the hash entry */
-static int name_cmp(const void *a, const void *b)
-{
- const struct hash_entry *he_a = (const struct hash_entry *) a;
- const struct hash_entry *he_b = (const struct hash_entry *) b;
- int ret;
- int min_len;
-
- min_len = he_a->dir->name_len;
- if (min_len > he_b->dir->name_len)
- min_len = he_b->dir->name_len;
-
- ret = strncmp(he_a->dir->name, he_b->dir->name, min_len);
- if (ret == 0) {
- if (he_a->dir->name_len > he_b->dir->name_len)
- ret = 1;
- else if (he_a->dir->name_len < he_b->dir->name_len)
- ret = -1;
- else
- ret = he_b->dir->inode - he_a->dir->inode;
- }
- return ret;
-}
-
-/* Used for sorting the hash entry */
-static int hash_cmp(const void *a, const void *b)
-{
- const struct hash_entry *he_a = (const struct hash_entry *) a;
- const struct hash_entry *he_b = (const struct hash_entry *) b;
- int ret;
-
- if (he_a->hash > he_b->hash)
- ret = 1;
- else if (he_a->hash < he_b->hash)
- ret = -1;
- else {
- if (he_a->minor_hash > he_b->minor_hash)
- ret = 1;
- else if (he_a->minor_hash < he_b->minor_hash)
- ret = -1;
- else
- ret = name_cmp(a, b);
- }
- return ret;
-}
-
-static errcode_t alloc_size_dir(ext2_filsys fs, struct out_dir *outdir,
- int blocks)
-{
- void *new_mem;
-
- if (outdir->max) {
- new_mem = realloc(outdir->buf, blocks * fs->blocksize);
- if (!new_mem)
- return ENOMEM;
- outdir->buf = new_mem;
- new_mem = realloc(outdir->hashes,
- blocks * sizeof(ext2_dirhash_t));
- if (!new_mem)
- return ENOMEM;
- outdir->hashes = new_mem;
- } else {
- outdir->buf = malloc(blocks * fs->blocksize);
- outdir->hashes = malloc(blocks * sizeof(ext2_dirhash_t));
- outdir->num = 0;
- }
- outdir->max = blocks;
- return 0;
-}
-
-static void free_out_dir(struct out_dir *outdir)
-{
- free(outdir->buf);
- free(outdir->hashes);
- outdir->max = 0;
- outdir->num =0;
-}
-
-static errcode_t get_next_block(ext2_filsys fs, struct out_dir *outdir,
- char ** ret)
-{
- errcode_t retval;
-
- if (outdir->num >= outdir->max) {
- retval = alloc_size_dir(fs, outdir, outdir->max + 50);
- if (retval)
- return retval;
- }
- *ret = outdir->buf + (outdir->num++ * fs->blocksize);
- memset(*ret, 0, fs->blocksize);
- return 0;
-}
-
-/*
- * This function is used to make a unique filename. We do this by
- * appending ~0, and then incrementing the number. However, we cannot
- * expand the length of the filename beyond the padding available in
- * the directory entry.
- */
-static void mutate_name(char *str, __u16 *len)
-{
- int i;
- __u16 l = *len & 0xFF, h = *len & 0xff00;
-
- /*
- * First check to see if it looks the name has been mutated
- * already
- */
- for (i = l-1; i > 0; i--) {
- if (!isdigit(str[i]))
- break;
- }
- if ((i == l-1) || (str[i] != '~')) {
- if (((l-1) & 3) < 2)
- l += 2;
- else
- l = (l+3) & ~3;
- str[l-2] = '~';
- str[l-1] = '0';
- *len = l | h;
- return;
- }
- for (i = l-1; i >= 0; i--) {
- if (isdigit(str[i])) {
- if (str[i] == '9')
- str[i] = '0';
- else {
- str[i]++;
- return;
- }
- continue;
- }
- if (i == 1) {
- if (str[0] == 'z')
- str[0] = 'A';
- else if (str[0] == 'Z') {
- str[0] = '~';
- str[1] = '0';
- } else
- str[0]++;
- } else if (i > 0) {
- str[i] = '1';
- str[i-1] = '~';
- } else {
- if (str[0] == '~')
- str[0] = 'a';
- else
- str[0]++;
- }
- break;
- }
-}
-
-static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
- ext2_ino_t ino,
- struct fill_dir_struct *fd)
-{
- struct problem_context pctx;
- struct hash_entry *ent, *prev;
- int i, j;
- int fixed = 0;
- char new_name[256];
- __u16 new_len;
-
- clear_problem_context(&pctx);
- pctx.ino = ino;
-
- for (i=1; i < fd->num_array; i++) {
- ent = fd->harray + i;
- prev = ent - 1;
- if (!ent->dir->inode ||
- ((ent->dir->name_len & 0xFF) !=
- (prev->dir->name_len & 0xFF)) ||
- (strncmp(ent->dir->name, prev->dir->name,
- ent->dir->name_len & 0xFF)))
- continue;
- pctx.dirent = ent->dir;
- if ((ent->dir->inode == prev->dir->inode) &&
- fix_problem(ctx, PR_2_DUPLICATE_DIRENT, &pctx)) {
- e2fsck_adjust_inode_count(ctx, ent->dir->inode, -1);
- ent->dir->inode = 0;
- fixed++;
- continue;
- }
- memcpy(new_name, ent->dir->name, ent->dir->name_len & 0xFF);
- new_len = ent->dir->name_len;
- mutate_name(new_name, &new_len);
- for (j=0; j < fd->num_array; j++) {
- if ((i==j) ||
- ((ent->dir->name_len & 0xFF) !=
- (fd->harray[j].dir->name_len & 0xFF)) ||
- (strncmp(new_name, fd->harray[j].dir->name,
- new_len & 0xFF)))
- continue;
- mutate_name(new_name, &new_len);
-
- j = -1;
- }
- new_name[new_len & 0xFF] = 0;
- pctx.str = new_name;
- if (fix_problem(ctx, PR_2_NON_UNIQUE_FILE, &pctx)) {
- memcpy(ent->dir->name, new_name, new_len & 0xFF);
- ent->dir->name_len = new_len;
- ext2fs_dirhash(fs->super->s_def_hash_version,
- ent->dir->name,
- ent->dir->name_len & 0xFF,
- fs->super->s_hash_seed,
- &ent->hash, &ent->minor_hash);
- fixed++;
- }
- }
- return fixed;
-}
-
-
-static errcode_t copy_dir_entries(ext2_filsys fs,
- struct fill_dir_struct *fd,
- struct out_dir *outdir)
-{
- errcode_t retval;
- char *block_start;
- struct hash_entry *ent;
- struct ext2_dir_entry *dirent;
- int i, rec_len, left;
- ext2_dirhash_t prev_hash;
- int offset;
-
- outdir->max = 0;
- retval = alloc_size_dir(fs, outdir,
- (fd->dir_size / fs->blocksize) + 2);
- if (retval)
- return retval;
- outdir->num = fd->compress ? 0 : 1;
- offset = 0;
- outdir->hashes[0] = 0;
- prev_hash = 1;
- if ((retval = get_next_block(fs, outdir, &block_start)))
- return retval;
- dirent = (struct ext2_dir_entry *) block_start;
- left = fs->blocksize;
- for (i=0; i < fd->num_array; i++) {
- ent = fd->harray + i;
- if (ent->dir->inode == 0)
- continue;
- rec_len = EXT2_DIR_REC_LEN(ent->dir->name_len & 0xFF);
- if (rec_len > left) {
- if (left)
- dirent->rec_len += left;
- if ((retval = get_next_block(fs, outdir,
- &block_start)))
- return retval;
- offset = 0;
- }
- left = fs->blocksize - offset;
- dirent = (struct ext2_dir_entry *) (block_start + offset);
- if (offset == 0) {
- if (ent->hash == prev_hash)
- outdir->hashes[outdir->num-1] = ent->hash | 1;
- else
- outdir->hashes[outdir->num-1] = ent->hash;
- }
- dirent->inode = ent->dir->inode;
- dirent->name_len = ent->dir->name_len;
- dirent->rec_len = rec_len;
- memcpy(dirent->name, ent->dir->name, dirent->name_len & 0xFF);
- offset += rec_len;
- left -= rec_len;
- if (left < 12) {
- dirent->rec_len += left;
- offset += left;
- left = 0;
- }
- prev_hash = ent->hash;
- }
- if (left)
- dirent->rec_len += left;
-
- return 0;
-}
-
-
-static struct ext2_dx_root_info *set_root_node(ext2_filsys fs, char *buf,
- ext2_ino_t ino, ext2_ino_t parent)
-{
- struct ext2_dir_entry *dir;
- struct ext2_dx_root_info *root;
- struct ext2_dx_countlimit *limits;
- int filetype = 0;
-
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
- filetype = EXT2_FT_DIR << 8;
-
- memset(buf, 0, fs->blocksize);
- dir = (struct ext2_dir_entry *) buf;
- dir->inode = ino;
- dir->name[0] = '.';
- dir->name_len = 1 | filetype;
- dir->rec_len = 12;
- dir = (struct ext2_dir_entry *) (buf + 12);
- dir->inode = parent;
- dir->name[0] = '.';
- dir->name[1] = '.';
- dir->name_len = 2 | filetype;
- dir->rec_len = fs->blocksize - 12;
-
- root = (struct ext2_dx_root_info *) (buf+24);
- root->reserved_zero = 0;
- root->hash_version = fs->super->s_def_hash_version;
- root->info_length = 8;
- root->indirect_levels = 0;
- root->unused_flags = 0;
-
- limits = (struct ext2_dx_countlimit *) (buf+32);
- limits->limit = (fs->blocksize - 32) / sizeof(struct ext2_dx_entry);
- limits->count = 0;
-
- return root;
-}
-
-
-static struct ext2_dx_entry *set_int_node(ext2_filsys fs, char *buf)
-{
- struct ext2_dir_entry *dir;
- struct ext2_dx_countlimit *limits;
-
- memset(buf, 0, fs->blocksize);
- dir = (struct ext2_dir_entry *) buf;
- dir->inode = 0;
- dir->rec_len = fs->blocksize;
-
- limits = (struct ext2_dx_countlimit *) (buf+8);
- limits->limit = (fs->blocksize - 8) / sizeof(struct ext2_dx_entry);
- limits->count = 0;
-
- return (struct ext2_dx_entry *) limits;
-}
-
-/*
- * This function takes the leaf nodes which have been written in
- * outdir, and populates the root node and any necessary interior nodes.
- */
-static errcode_t calculate_tree(ext2_filsys fs,
- struct out_dir *outdir,
- ext2_ino_t ino,
- ext2_ino_t parent)
-{
- struct ext2_dx_root_info *root_info;
- struct ext2_dx_entry *root, *dx_ent = 0;
- struct ext2_dx_countlimit *root_limit, *limit;
- errcode_t retval;
- char * block_start;
- int i, c1, c2, nblks;
- int limit_offset, root_offset;
-
- root_info = set_root_node(fs, outdir->buf, ino, parent);
- root_offset = limit_offset = ((char *) root_info - outdir->buf) +
- root_info->info_length;
- root_limit = (struct ext2_dx_countlimit *) (outdir->buf + limit_offset);
- c1 = root_limit->limit;
- nblks = outdir->num;
-
- /* Write out the pointer blocks */
- if (nblks-1 <= c1) {
- /* Just write out the root block, and we're done */
- root = (struct ext2_dx_entry *) (outdir->buf + root_offset);
- for (i=1; i < nblks; i++) {
- root->block = ext2fs_cpu_to_le32(i);
- if (i != 1)
- root->hash =
- ext2fs_cpu_to_le32(outdir->hashes[i]);
- root++;
- c1--;
- }
- } else {
- c2 = 0;
- limit = 0;
- root_info->indirect_levels = 1;
- for (i=1; i < nblks; i++) {
- if (c1 == 0)
- return ENOSPC;
- if (c2 == 0) {
- if (limit)
- limit->limit = limit->count =
- ext2fs_cpu_to_le16(limit->limit);
- root = (struct ext2_dx_entry *)
- (outdir->buf + root_offset);
- root->block = ext2fs_cpu_to_le32(outdir->num);
- if (i != 1)
- root->hash =
- ext2fs_cpu_to_le32(outdir->hashes[i]);
- if ((retval = get_next_block(fs, outdir,
- &block_start)))
- return retval;
- dx_ent = set_int_node(fs, block_start);
- limit = (struct ext2_dx_countlimit *) dx_ent;
- c2 = limit->limit;
- root_offset += sizeof(struct ext2_dx_entry);
- c1--;
- }
- dx_ent->block = ext2fs_cpu_to_le32(i);
- if (c2 != limit->limit)
- dx_ent->hash =
- ext2fs_cpu_to_le32(outdir->hashes[i]);
- dx_ent++;
- c2--;
- }
- limit->count = ext2fs_cpu_to_le16(limit->limit - c2);
- limit->limit = ext2fs_cpu_to_le16(limit->limit);
- }
- root_limit = (struct ext2_dx_countlimit *) (outdir->buf + limit_offset);
- root_limit->count = ext2fs_cpu_to_le16(root_limit->limit - c1);
- root_limit->limit = ext2fs_cpu_to_le16(root_limit->limit);
-
- return 0;
-}
-
-struct write_dir_struct {
- struct out_dir *outdir;
- errcode_t err;
- e2fsck_t ctx;
- int cleared;
-};
-
-/*
- * Helper function which writes out a directory block.
- */
-static int write_dir_block(ext2_filsys fs,
- blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct write_dir_struct *wd = (struct write_dir_struct *) priv_data;
- blk_t blk;
- char *dir;
-
- if (*block_nr == 0)
- return 0;
- if (blockcnt >= wd->outdir->num) {
- e2fsck_read_bitmaps(wd->ctx);
- blk = *block_nr;
- ext2fs_unmark_block_bitmap(wd->ctx->block_found_map, blk);
- ext2fs_block_alloc_stats(fs, blk, -1);
- *block_nr = 0;
- wd->cleared++;
- return BLOCK_CHANGED;
- }
- if (blockcnt < 0)
- return 0;
-
- dir = wd->outdir->buf + (blockcnt * fs->blocksize);
- wd->err = ext2fs_write_dir_block(fs, *block_nr, dir);
- if (wd->err)
- return BLOCK_ABORT;
- return 0;
-}
-
-static errcode_t write_directory(e2fsck_t ctx, ext2_filsys fs,
- struct out_dir *outdir,
- ext2_ino_t ino, int compress)
-{
- struct write_dir_struct wd;
- errcode_t retval;
- struct ext2_inode inode;
-
- retval = e2fsck_expand_directory(ctx, ino, -1, outdir->num);
- if (retval)
- return retval;
-
- wd.outdir = outdir;
- wd.err = 0;
- wd.ctx = ctx;
- wd.cleared = 0;
-
- retval = ext2fs_block_iterate2(fs, ino, 0, 0,
- write_dir_block, &wd);
- if (retval)
- return retval;
- if (wd.err)
- return wd.err;
-
- e2fsck_read_inode(ctx, ino, &inode, "rehash_dir");
- if (compress)
- inode.i_flags &= ~EXT2_INDEX_FL;
- else
- inode.i_flags |= EXT2_INDEX_FL;
- inode.i_size = outdir->num * fs->blocksize;
- inode.i_blocks -= (fs->blocksize / 512) * wd.cleared;
- e2fsck_write_inode(ctx, ino, &inode, "rehash_dir");
-
- return 0;
-}
-
-static errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- struct ext2_inode inode;
- char *dir_buf = 0;
- struct fill_dir_struct fd;
- struct out_dir outdir;
-
- outdir.max = outdir.num = 0;
- outdir.buf = 0;
- outdir.hashes = 0;
- e2fsck_read_inode(ctx, ino, &inode, "rehash_dir");
-
- retval = ENOMEM;
- fd.harray = 0;
- dir_buf = malloc(inode.i_size);
- if (!dir_buf)
- goto errout;
-
- fd.max_array = inode.i_size / 32;
- fd.num_array = 0;
- fd.harray = malloc(fd.max_array * sizeof(struct hash_entry));
- if (!fd.harray)
- goto errout;
-
- fd.ctx = ctx;
- fd.buf = dir_buf;
- fd.inode = &inode;
- fd.err = 0;
- fd.dir_size = 0;
- fd.compress = 0;
- if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
- (inode.i_size / fs->blocksize) < 2)
- fd.compress = 1;
- fd.parent = 0;
-
- /* Read in the entire directory into memory */
- retval = ext2fs_block_iterate2(fs, ino, 0, 0,
- fill_dir_block, &fd);
- if (fd.err) {
- retval = fd.err;
- goto errout;
- }
-
- /* Sort the list */
-resort:
- if (fd.compress)
- qsort(fd.harray+2, fd.num_array-2,
- sizeof(struct hash_entry), name_cmp);
- else
- qsort(fd.harray, fd.num_array,
- sizeof(struct hash_entry), hash_cmp);
-
- /*
- * Look for duplicates
- */
- if (duplicate_search_and_fix(ctx, fs, ino, &fd))
- goto resort;
-
- if (ctx->options & E2F_OPT_NO) {
- retval = 0;
- goto errout;
- }
-
- /*
- * Copy the directory entries. In a htree directory these
- * will become the leaf nodes.
- */
- retval = copy_dir_entries(fs, &fd, &outdir);
- if (retval)
- goto errout;
-
- free(dir_buf); dir_buf = 0;
-
- if (!fd.compress) {
- /* Calculate the interior nodes */
- retval = calculate_tree(fs, &outdir, ino, fd.parent);
- if (retval)
- goto errout;
- }
-
- retval = write_directory(ctx, fs, &outdir, ino, fd.compress);
-
-errout:
- free(dir_buf);
- free(fd.harray);
-
- free_out_dir(&outdir);
- return retval;
-}
-
-void e2fsck_rehash_directories(e2fsck_t ctx)
-{
- struct problem_context pctx;
- struct dir_info *dir;
- ext2_u32_iterate iter;
- ext2_ino_t ino;
- errcode_t retval;
- int i, cur, max, all_dirs, dir_index, first = 1;
-
- all_dirs = ctx->options & E2F_OPT_COMPRESS_DIRS;
-
- if (!ctx->dirs_to_hash && !all_dirs)
- return;
-
- e2fsck_get_lost_and_found(ctx, 0);
-
- clear_problem_context(&pctx);
-
- dir_index = ctx->fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX;
- cur = 0;
- if (all_dirs) {
- i = 0;
- max = e2fsck_get_num_dirinfo(ctx);
- } else {
- retval = ext2fs_u32_list_iterate_begin(ctx->dirs_to_hash,
- &iter);
- if (retval) {
- pctx.errcode = retval;
- fix_problem(ctx, PR_3A_OPTIMIZE_ITER, &pctx);
- return;
- }
- max = ext2fs_u32_list_count(ctx->dirs_to_hash);
- }
- while (1) {
- if (all_dirs) {
- if ((dir = e2fsck_dir_info_iter(ctx, &i)) == 0)
- break;
- ino = dir->ino;
- } else {
- if (!ext2fs_u32_list_iterate(iter, &ino))
- break;
- }
- if (ino == ctx->lost_and_found)
- continue;
- pctx.dir = ino;
- if (first) {
- fix_problem(ctx, PR_3A_PASS_HEADER, &pctx);
- first = 0;
- }
- pctx.errcode = e2fsck_rehash_dir(ctx, ino);
- if (pctx.errcode) {
- end_problem_latch(ctx, PR_LATCH_OPTIMIZE_DIR);
- fix_problem(ctx, PR_3A_OPTIMIZE_DIR_ERR, &pctx);
- }
- if (ctx->progress && !ctx->progress_fd)
- e2fsck_simple_progress(ctx, "Rebuilding directory",
- 100.0 * (float) (++cur) / (float) max, ino);
- }
- end_problem_latch(ctx, PR_LATCH_OPTIMIZE_DIR);
- if (!all_dirs)
- ext2fs_u32_list_iterate_end(iter);
-
- ext2fs_u32_list_free(ctx->dirs_to_hash);
- ctx->dirs_to_hash = 0;
-}
-
-/*
- * linux/fs/revoke.c
- *
- * Journal revoke routines for the generic filesystem journaling code;
- * part of the ext2fs journaling system.
- *
- * Revoke is the mechanism used to prevent old log records for deleted
- * metadata from being replayed on top of newer data using the same
- * blocks. The revoke mechanism is used in two separate places:
- *
- * + Commit: during commit we write the entire list of the current
- * transaction's revoked blocks to the journal
- *
- * + Recovery: during recovery we record the transaction ID of all
- * revoked blocks. If there are multiple revoke records in the log
- * for a single block, only the last one counts, and if there is a log
- * entry for a block beyond the last revoke, then that log entry still
- * gets replayed.
- *
- * We can get interactions between revokes and new log data within a
- * single transaction:
- *
- * Block is revoked and then journaled:
- * The desired end result is the journaling of the new block, so we
- * cancel the revoke before the transaction commits.
- *
- * Block is journaled and then revoked:
- * The revoke must take precedence over the write of the block, so we
- * need either to cancel the journal entry or to write the revoke
- * later in the log than the log block. In this case, we choose the
- * latter: journaling a block cancels any revoke record for that block
- * in the current transaction, so any revoke for that block in the
- * transaction must have happened after the block was journaled and so
- * the revoke must take precedence.
- *
- * Block is revoked and then written as data:
- * The data write is allowed to succeed, but the revoke is _not_
- * cancelled. We still need to prevent old log records from
- * overwriting the new data. We don't even need to clear the revoke
- * bit here.
- *
- * Revoke information on buffers is a tri-state value:
- *
- * RevokeValid clear: no cached revoke status, need to look it up
- * RevokeValid set, Revoked clear:
- * buffer has not been revoked, and cancel_revoke
- * need do nothing.
- * RevokeValid set, Revoked set:
- * buffer has been revoked.
- */
-
-static kmem_cache_t *revoke_record_cache;
-static kmem_cache_t *revoke_table_cache;
-
-/* Each revoke record represents one single revoked block. During
- journal replay, this involves recording the transaction ID of the
- last transaction to revoke this block. */
-
-struct jbd_revoke_record_s
-{
- struct list_head hash;
- tid_t sequence; /* Used for recovery only */
- unsigned long blocknr;
-};
-
-
-/* The revoke table is just a simple hash table of revoke records. */
-struct jbd_revoke_table_s
-{
- /* It is conceivable that we might want a larger hash table
- * for recovery. Must be a power of two. */
- int hash_size;
- int hash_shift;
- struct list_head *hash_table;
-};
-
-
-/* Utility functions to maintain the revoke table */
-
-/* Borrowed from buffer.c: this is a tried and tested block hash function */
-static int hash(journal_t *journal, unsigned long block)
-{
- struct jbd_revoke_table_s *table = journal->j_revoke;
- int hash_shift = table->hash_shift;
-
- return ((block << (hash_shift - 6)) ^
- (block >> 13) ^
- (block << (hash_shift - 12))) & (table->hash_size - 1);
-}
-
-static int insert_revoke_hash(journal_t *journal, unsigned long blocknr,
- tid_t seq)
-{
- struct list_head *hash_list;
- struct jbd_revoke_record_s *record;
-
- record = kmem_cache_alloc(revoke_record_cache, GFP_NOFS);
- if (!record)
- goto oom;
-
- record->sequence = seq;
- record->blocknr = blocknr;
- hash_list = &journal->j_revoke->hash_table[hash(journal, blocknr)];
- list_add(&record->hash, hash_list);
- return 0;
-
-oom:
- return -ENOMEM;
-}
-
-/* Find a revoke record in the journal's hash table. */
-
-static struct jbd_revoke_record_s *find_revoke_record(journal_t *journal,
- unsigned long blocknr)
-{
- struct list_head *hash_list;
- struct jbd_revoke_record_s *record;
-
- hash_list = &journal->j_revoke->hash_table[hash(journal, blocknr)];
-
- record = (struct jbd_revoke_record_s *) hash_list->next;
- while (&(record->hash) != hash_list) {
- if (record->blocknr == blocknr)
- return record;
- record = (struct jbd_revoke_record_s *) record->hash.next;
- }
- return NULL;
-}
-
-int journal_init_revoke_caches(void)
-{
- revoke_record_cache = do_cache_create(sizeof(struct jbd_revoke_record_s));
- if (revoke_record_cache == 0)
- return -ENOMEM;
-
- revoke_table_cache = do_cache_create(sizeof(struct jbd_revoke_table_s));
- if (revoke_table_cache == 0) {
- do_cache_destroy(revoke_record_cache);
- revoke_record_cache = NULL;
- return -ENOMEM;
- }
- return 0;
-}
-
-void journal_destroy_revoke_caches(void)
-{
- do_cache_destroy(revoke_record_cache);
- revoke_record_cache = 0;
- do_cache_destroy(revoke_table_cache);
- revoke_table_cache = 0;
-}
-
-/* Initialise the revoke table for a given journal to a given size. */
-
-int journal_init_revoke(journal_t *journal, int hash_size)
-{
- int shift, tmp;
-
- journal->j_revoke = kmem_cache_alloc(revoke_table_cache, GFP_KERNEL);
- if (!journal->j_revoke)
- return -ENOMEM;
-
- /* Check that the hash_size is a power of two */
- journal->j_revoke->hash_size = hash_size;
-
- shift = 0;
- tmp = hash_size;
- while((tmp >>= 1UL) != 0UL)
- shift++;
- journal->j_revoke->hash_shift = shift;
-
- journal->j_revoke->hash_table = malloc(hash_size * sizeof(struct list_head));
- if (!journal->j_revoke->hash_table) {
- free(journal->j_revoke);
- journal->j_revoke = NULL;
- return -ENOMEM;
- }
-
- for (tmp = 0; tmp < hash_size; tmp++)
- INIT_LIST_HEAD(&journal->j_revoke->hash_table[tmp]);
-
- return 0;
-}
-
-/* Destoy a journal's revoke table. The table must already be empty! */
-
-void journal_destroy_revoke(journal_t *journal)
-{
- struct jbd_revoke_table_s *table;
- struct list_head *hash_list;
- int i;
-
- table = journal->j_revoke;
- if (!table)
- return;
-
- for (i=0; i<table->hash_size; i++) {
- hash_list = &table->hash_table[i];
- }
-
- free(table->hash_table);
- free(table);
- journal->j_revoke = NULL;
-}
-
-/*
- * Revoke support for recovery.
- *
- * Recovery needs to be able to:
- *
- * record all revoke records, including the tid of the latest instance
- * of each revoke in the journal
- *
- * check whether a given block in a given transaction should be replayed
- * (ie. has not been revoked by a revoke record in that or a subsequent
- * transaction)
- *
- * empty the revoke table after recovery.
- */
-
-/*
- * First, setting revoke records. We create a new revoke record for
- * every block ever revoked in the log as we scan it for recovery, and
- * we update the existing records if we find multiple revokes for a
- * single block.
- */
-
-int journal_set_revoke(journal_t *journal, unsigned long blocknr,
- tid_t sequence)
-{
- struct jbd_revoke_record_s *record;
-
- record = find_revoke_record(journal, blocknr);
- if (record) {
- /* If we have multiple occurences, only record the
- * latest sequence number in the hashed record */
- if (tid_gt(sequence, record->sequence))
- record->sequence = sequence;
- return 0;
- }
- return insert_revoke_hash(journal, blocknr, sequence);
-}
-
-/*
- * Test revoke records. For a given block referenced in the log, has
- * that block been revoked? A revoke record with a given transaction
- * sequence number revokes all blocks in that transaction and earlier
- * ones, but later transactions still need replayed.
- */
-
-int journal_test_revoke(journal_t *journal, unsigned long blocknr,
- tid_t sequence)
-{
- struct jbd_revoke_record_s *record;
-
- record = find_revoke_record(journal, blocknr);
- if (!record)
- return 0;
- if (tid_gt(sequence, record->sequence))
- return 0;
- return 1;
-}
-
-/*
- * Finally, once recovery is over, we need to clear the revoke table so
- * that it can be reused by the running filesystem.
- */
-
-void journal_clear_revoke(journal_t *journal)
-{
- int i;
- struct list_head *hash_list;
- struct jbd_revoke_record_s *record;
- struct jbd_revoke_table_s *revoke_var;
-
- revoke_var = journal->j_revoke;
-
- for (i = 0; i < revoke_var->hash_size; i++) {
- hash_list = &revoke_var->hash_table[i];
- while (!list_empty(hash_list)) {
- record = (struct jbd_revoke_record_s*) hash_list->next;
- list_del(&record->hash);
- free(record);
- }
- }
-}
-
-/*
- * e2fsck.c - superblock checks
- */
-
-#define MIN_CHECK 1
-#define MAX_CHECK 2
-
-static void check_super_value(e2fsck_t ctx, const char *descr,
- unsigned long value, int flags,
- unsigned long min_val, unsigned long max_val)
-{
- struct problem_context pctx;
-
- if (((flags & MIN_CHECK) && (value < min_val)) ||
- ((flags & MAX_CHECK) && (value > max_val))) {
- clear_problem_context(&pctx);
- pctx.num = value;
- pctx.str = descr;
- fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
- ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
- }
-}
-
-/*
- * This routine may get stubbed out in special compilations of the
- * e2fsck code..
- */
-#ifndef EXT2_SPECIAL_DEVICE_SIZE
-static errcode_t e2fsck_get_device_size(e2fsck_t ctx)
-{
- return (ext2fs_get_device_size(ctx->filesystem_name,
- EXT2_BLOCK_SIZE(ctx->fs->super),
- &ctx->num_blocks));
-}
-#endif
-
-/*
- * helper function to release an inode
- */
-struct process_block_struct {
- e2fsck_t ctx;
- char *buf;
- struct problem_context *pctx;
- int truncating;
- int truncate_offset;
- e2_blkcnt_t truncate_block;
- int truncated_blocks;
- int abort;
- errcode_t errcode;
-};
-
-static int release_inode_block(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_blk FSCK_ATTR((unused)),
- int ref_offset FSCK_ATTR((unused)),
- void *priv_data)
-{
- struct process_block_struct *pb;
- e2fsck_t ctx;
- struct problem_context *pctx;
- blk_t blk = *block_nr;
- int retval = 0;
-
- pb = (struct process_block_struct *) priv_data;
- ctx = pb->ctx;
- pctx = pb->pctx;
-
- pctx->blk = blk;
- pctx->blkcount = blockcnt;
-
- if (HOLE_BLKADDR(blk))
- return 0;
-
- if ((blk < fs->super->s_first_data_block) ||
- (blk >= fs->super->s_blocks_count)) {
- fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx);
- return_abort:
- pb->abort = 1;
- return BLOCK_ABORT;
- }
-
- if (!ext2fs_test_block_bitmap(fs->block_map, blk)) {
- fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx);
- goto return_abort;
- }
-
- /*
- * If we are deleting an orphan, then we leave the fields alone.
- * If we are truncating an orphan, then update the inode fields
- * and clean up any partial block data.
- */
- if (pb->truncating) {
- /*
- * We only remove indirect blocks if they are
- * completely empty.
- */
- if (blockcnt < 0) {
- int i, limit;
- blk_t *bp;
-
- pb->errcode = io_channel_read_blk(fs->io, blk, 1,
- pb->buf);
- if (pb->errcode)
- goto return_abort;
-
- limit = fs->blocksize >> 2;
- for (i = 0, bp = (blk_t *) pb->buf;
- i < limit; i++, bp++)
- if (*bp)
- return 0;
- }
- /*
- * We don't remove direct blocks until we've reached
- * the truncation block.
- */
- if (blockcnt >= 0 && blockcnt < pb->truncate_block)
- return 0;
- /*
- * If part of the last block needs truncating, we do
- * it here.
- */
- if ((blockcnt == pb->truncate_block) && pb->truncate_offset) {
- pb->errcode = io_channel_read_blk(fs->io, blk, 1,
- pb->buf);
- if (pb->errcode)
- goto return_abort;
- memset(pb->buf + pb->truncate_offset, 0,
- fs->blocksize - pb->truncate_offset);
- pb->errcode = io_channel_write_blk(fs->io, blk, 1,
- pb->buf);
- if (pb->errcode)
- goto return_abort;
- }
- pb->truncated_blocks++;
- *block_nr = 0;
- retval |= BLOCK_CHANGED;
- }
-
- ext2fs_block_alloc_stats(fs, blk, -1);
- return retval;
-}
-
-/*
- * This function releases an inode. Returns 1 if an inconsistency was
- * found. If the inode has a link count, then it is being truncated and
- * not deleted.
- */
-static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino,
- struct ext2_inode *inode, char *block_buf,
- struct problem_context *pctx)
-{
- struct process_block_struct pb;
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
- __u32 count;
-
- if (!ext2fs_inode_has_valid_blocks(inode))
- return 0;
-
- pb.buf = block_buf + 3 * ctx->fs->blocksize;
- pb.ctx = ctx;
- pb.abort = 0;
- pb.errcode = 0;
- pb.pctx = pctx;
- if (inode->i_links_count) {
- pb.truncating = 1;
- pb.truncate_block = (e2_blkcnt_t)
- ((((long long)inode->i_size_high << 32) +
- inode->i_size + fs->blocksize - 1) /
- fs->blocksize);
- pb.truncate_offset = inode->i_size % fs->blocksize;
- } else {
- pb.truncating = 0;
- pb.truncate_block = 0;
- pb.truncate_offset = 0;
- }
- pb.truncated_blocks = 0;
- retval = ext2fs_block_iterate2(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE,
- block_buf, release_inode_block, &pb);
- if (retval) {
- bb_error_msg(_("while calling ext2fs_block_iterate for inode %d"),
- ino);
- return 1;
- }
- if (pb.abort)
- return 1;
-
- /* Refresh the inode since ext2fs_block_iterate may have changed it */
- e2fsck_read_inode(ctx, ino, inode, "release_inode_blocks");
-
- if (pb.truncated_blocks)
- inode->i_blocks -= pb.truncated_blocks *
- (fs->blocksize / 512);
-
- if (inode->i_file_acl) {
- retval = ext2fs_adjust_ea_refcount(fs, inode->i_file_acl,
- block_buf, -1, &count);
- if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) {
- retval = 0;
- count = 1;
- }
- if (retval) {
- bb_error_msg(_("while calling ext2fs_adjust_ea_refocunt for inode %d"),
- ino);
- return 1;
- }
- if (count == 0)
- ext2fs_block_alloc_stats(fs, inode->i_file_acl, -1);
- inode->i_file_acl = 0;
- }
- return 0;
-}
-
-/*
- * This function releases all of the orphan inodes. It returns 1 if
- * it hit some error, and 0 on success.
- */
-static int release_orphan_inodes(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- ext2_ino_t ino, next_ino;
- struct ext2_inode inode;
- struct problem_context pctx;
- char *block_buf;
-
- if ((ino = fs->super->s_last_orphan) == 0)
- return 0;
-
- /*
- * Win or lose, we won't be using the head of the orphan inode
- * list again.
- */
- fs->super->s_last_orphan = 0;
- ext2fs_mark_super_dirty(fs);
-
- /*
- * If the filesystem contains errors, don't run the orphan
- * list, since the orphan list can't be trusted; and we're
- * going to be running a full e2fsck run anyway...
- */
- if (fs->super->s_state & EXT2_ERROR_FS)
- return 0;
-
- if ((ino < EXT2_FIRST_INODE(fs->super)) ||
- (ino > fs->super->s_inodes_count)) {
- clear_problem_context(&pctx);
- pctx.ino = ino;
- fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx);
- return 1;
- }
-
- block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4,
- "block iterate buffer");
- e2fsck_read_bitmaps(ctx);
-
- while (ino) {
- e2fsck_read_inode(ctx, ino, &inode, "release_orphan_inodes");
- clear_problem_context(&pctx);
- pctx.ino = ino;
- pctx.inode = &inode;
- pctx.str = inode.i_links_count ? _("Truncating") :
- _("Clearing");
-
- fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx);
-
- next_ino = inode.i_dtime;
- if (next_ino &&
- ((next_ino < EXT2_FIRST_INODE(fs->super)) ||
- (next_ino > fs->super->s_inodes_count))) {
- pctx.ino = next_ino;
- fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx);
- goto return_abort;
- }
-
- if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx))
- goto return_abort;
-
- if (!inode.i_links_count) {
- ext2fs_inode_alloc_stats2(fs, ino, -1,
- LINUX_S_ISDIR(inode.i_mode));
- inode.i_dtime = time(0);
- } else {
- inode.i_dtime = 0;
- }
- e2fsck_write_inode(ctx, ino, &inode, "delete_file");
- ino = next_ino;
- }
- ext2fs_free_mem(&block_buf);
- return 0;
-return_abort:
- ext2fs_free_mem(&block_buf);
- return 1;
-}
-
-/*
- * Check the resize inode to make sure it is sane. We check both for
- * the case where on-line resizing is not enabled (in which case the
- * resize inode should be cleared) as well as the case where on-line
- * resizing is enabled.
- */
-static void check_resize_inode(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- struct ext2_inode inode;
- struct problem_context pctx;
- int i, j, gdt_off, ind_off;
- blk_t blk, pblk, expect;
- __u32 *dind_buf = 0, *ind_buf;
- errcode_t retval;
-
- clear_problem_context(&pctx);
-
- /*
- * If the resize inode feature isn't set, then
- * s_reserved_gdt_blocks must be zero.
- */
- if (!(fs->super->s_feature_compat &
- EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
- if (fs->super->s_reserved_gdt_blocks) {
- pctx.num = fs->super->s_reserved_gdt_blocks;
- if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS,
- &pctx)) {
- fs->super->s_reserved_gdt_blocks = 0;
- ext2fs_mark_super_dirty(fs);
- }
- }
- }
-
- /* Read the resize inode */
- pctx.ino = EXT2_RESIZE_INO;
- retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
- if (retval) {
- if (fs->super->s_feature_compat &
- EXT2_FEATURE_COMPAT_RESIZE_INODE)
- ctx->flags |= E2F_FLAG_RESIZE_INODE;
- return;
- }
-
- /*
- * If the resize inode feature isn't set, check to make sure
- * the resize inode is cleared; then we're done.
- */
- if (!(fs->super->s_feature_compat &
- EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
- for (i=0; i < EXT2_N_BLOCKS; i++) {
- if (inode.i_block[i])
- break;
- }
- if ((i < EXT2_N_BLOCKS) &&
- fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) {
- memset(&inode, 0, sizeof(inode));
- e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
- "clear_resize");
- }
- return;
- }
-
- /*
- * The resize inode feature is enabled; check to make sure the
- * only block in use is the double indirect block
- */
- blk = inode.i_block[EXT2_DIND_BLOCK];
- for (i=0; i < EXT2_N_BLOCKS; i++) {
- if (i != EXT2_DIND_BLOCK && inode.i_block[i])
- break;
- }
- if ((i < EXT2_N_BLOCKS) || !blk || !inode.i_links_count ||
- !(inode.i_mode & LINUX_S_IFREG) ||
- (blk < fs->super->s_first_data_block ||
- blk >= fs->super->s_blocks_count)) {
- resize_inode_invalid:
- if (fix_problem(ctx, PR_0_RESIZE_INODE_INVALID, &pctx)) {
- memset(&inode, 0, sizeof(inode));
- e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
- "clear_resize");
- ctx->flags |= E2F_FLAG_RESIZE_INODE;
- }
- if (!(ctx->options & E2F_OPT_READONLY)) {
- fs->super->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(fs);
- }
- goto cleanup;
- }
- dind_buf = (__u32 *) e2fsck_allocate_memory(ctx, fs->blocksize * 2,
- "resize dind buffer");
- ind_buf = (__u32 *) ((char *) dind_buf + fs->blocksize);
-
- retval = ext2fs_read_ind_block(fs, blk, dind_buf);
- if (retval)
- goto resize_inode_invalid;
-
- gdt_off = fs->desc_blocks;
- pblk = fs->super->s_first_data_block + 1 + fs->desc_blocks;
- for (i = 0; i < fs->super->s_reserved_gdt_blocks / 4;
- i++, gdt_off++, pblk++) {
- gdt_off %= fs->blocksize/4;
- if (dind_buf[gdt_off] != pblk)
- goto resize_inode_invalid;
- retval = ext2fs_read_ind_block(fs, pblk, ind_buf);
- if (retval)
- goto resize_inode_invalid;
- ind_off = 0;
- for (j = 1; j < fs->group_desc_count; j++) {
- if (!ext2fs_bg_has_super(fs, j))
- continue;
- expect = pblk + (j * fs->super->s_blocks_per_group);
- if (ind_buf[ind_off] != expect)
- goto resize_inode_invalid;
- ind_off++;
- }
- }
-
-cleanup:
- ext2fs_free_mem(&dind_buf);
-
- }
-
-static void check_super_block(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- blk_t first_block, last_block;
- struct ext2_super_block *sb = fs->super;
- struct ext2_group_desc *gd;
- blk_t blocks_per_group = fs->super->s_blocks_per_group;
- blk_t bpg_max;
- int inodes_per_block;
- int ipg_max;
- int inode_size;
- dgrp_t i;
- blk_t should_be;
- struct problem_context pctx;
- __u32 free_blocks = 0, free_inodes = 0;
-
- inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super);
- ipg_max = inodes_per_block * (blocks_per_group - 4);
- if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb))
- ipg_max = EXT2_MAX_INODES_PER_GROUP(sb);
- bpg_max = 8 * EXT2_BLOCK_SIZE(sb);
- if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb))
- bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb);
-
- ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
- sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap");
- ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
- sizeof(int) * fs->group_desc_count, "invalid_block_bitmap");
- ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx,
- sizeof(int) * fs->group_desc_count, "invalid_inode_table");
-
- clear_problem_context(&pctx);
-
- /*
- * Verify the super block constants...
- */
- check_super_value(ctx, "inodes_count", sb->s_inodes_count,
- MIN_CHECK, 1, 0);
- check_super_value(ctx, "blocks_count", sb->s_blocks_count,
- MIN_CHECK, 1, 0);
- check_super_value(ctx, "first_data_block", sb->s_first_data_block,
- MAX_CHECK, 0, sb->s_blocks_count);
- check_super_value(ctx, "log_block_size", sb->s_log_block_size,
- MIN_CHECK | MAX_CHECK, 0,
- EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE);
- check_super_value(ctx, "log_frag_size", sb->s_log_frag_size,
- MIN_CHECK | MAX_CHECK, 0, sb->s_log_block_size);
- check_super_value(ctx, "frags_per_group", sb->s_frags_per_group,
- MIN_CHECK | MAX_CHECK, sb->s_blocks_per_group,
- bpg_max);
- check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group,
- MIN_CHECK | MAX_CHECK, 8, bpg_max);
- check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group,
- MIN_CHECK | MAX_CHECK, inodes_per_block, ipg_max);
- check_super_value(ctx, "r_blocks_count", sb->s_r_blocks_count,
- MAX_CHECK, 0, sb->s_blocks_count / 2);
- check_super_value(ctx, "reserved_gdt_blocks",
- sb->s_reserved_gdt_blocks, MAX_CHECK, 0,
- fs->blocksize/4);
- inode_size = EXT2_INODE_SIZE(sb);
- check_super_value(ctx, "inode_size",
- inode_size, MIN_CHECK | MAX_CHECK,
- EXT2_GOOD_OLD_INODE_SIZE, fs->blocksize);
- if (inode_size & (inode_size - 1)) {
- pctx.num = inode_size;
- pctx.str = "inode_size";
- fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
- ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
- return;
- }
-
- if (!ctx->num_blocks) {
- pctx.errcode = e2fsck_get_device_size(ctx);
- if (pctx.errcode && pctx.errcode != EXT2_ET_UNIMPLEMENTED) {
- fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if ((pctx.errcode != EXT2_ET_UNIMPLEMENTED) &&
- (ctx->num_blocks < sb->s_blocks_count)) {
- pctx.blk = sb->s_blocks_count;
- pctx.blk2 = ctx->num_blocks;
- if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) {
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- }
- }
-
- if (sb->s_log_block_size != (__u32) sb->s_log_frag_size) {
- pctx.blk = EXT2_BLOCK_SIZE(sb);
- pctx.blk2 = EXT2_FRAG_SIZE(sb);
- fix_problem(ctx, PR_0_NO_FRAGMENTS, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- should_be = sb->s_frags_per_group >>
- (sb->s_log_block_size - sb->s_log_frag_size);
- if (sb->s_blocks_per_group != should_be) {
- pctx.blk = sb->s_blocks_per_group;
- pctx.blk2 = should_be;
- fix_problem(ctx, PR_0_BLOCKS_PER_GROUP, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- should_be = (sb->s_log_block_size == 0) ? 1 : 0;
- if (sb->s_first_data_block != should_be) {
- pctx.blk = sb->s_first_data_block;
- pctx.blk2 = should_be;
- fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-
- should_be = sb->s_inodes_per_group * fs->group_desc_count;
- if (sb->s_inodes_count != should_be) {
- pctx.ino = sb->s_inodes_count;
- pctx.ino2 = should_be;
- if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) {
- sb->s_inodes_count = should_be;
- ext2fs_mark_super_dirty(fs);
- }
- }
-
- /*
- * Verify the group descriptors....
- */
- first_block = sb->s_first_data_block;
- last_block = first_block + blocks_per_group;
-
- for (i = 0, gd=fs->group_desc; i < fs->group_desc_count; i++, gd++) {
- pctx.group = i;
-
- if (i == fs->group_desc_count - 1)
- last_block = sb->s_blocks_count;
- if ((gd->bg_block_bitmap < first_block) ||
- (gd->bg_block_bitmap >= last_block)) {
- pctx.blk = gd->bg_block_bitmap;
- if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx))
- gd->bg_block_bitmap = 0;
- }
- if (gd->bg_block_bitmap == 0) {
- ctx->invalid_block_bitmap_flag[i]++;
- ctx->invalid_bitmaps++;
- }
- if ((gd->bg_inode_bitmap < first_block) ||
- (gd->bg_inode_bitmap >= last_block)) {
- pctx.blk = gd->bg_inode_bitmap;
- if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx))
- gd->bg_inode_bitmap = 0;
- }
- if (gd->bg_inode_bitmap == 0) {
- ctx->invalid_inode_bitmap_flag[i]++;
- ctx->invalid_bitmaps++;
- }
- if ((gd->bg_inode_table < first_block) ||
- ((gd->bg_inode_table +
- fs->inode_blocks_per_group - 1) >= last_block)) {
- pctx.blk = gd->bg_inode_table;
- if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx))
- gd->bg_inode_table = 0;
- }
- if (gd->bg_inode_table == 0) {
- ctx->invalid_inode_table_flag[i]++;
- ctx->invalid_bitmaps++;
- }
- free_blocks += gd->bg_free_blocks_count;
- free_inodes += gd->bg_free_inodes_count;
- first_block += sb->s_blocks_per_group;
- last_block += sb->s_blocks_per_group;
-
- if ((gd->bg_free_blocks_count > sb->s_blocks_per_group) ||
- (gd->bg_free_inodes_count > sb->s_inodes_per_group) ||
- (gd->bg_used_dirs_count > sb->s_inodes_per_group))
- ext2fs_unmark_valid(fs);
-
- }
-
- /*
- * Update the global counts from the block group counts. This
- * is needed for an experimental patch which eliminates
- * locking the entire filesystem when allocating blocks or
- * inodes; if the filesystem is not unmounted cleanly, the
- * global counts may not be accurate.
- */
- if ((free_blocks != sb->s_free_blocks_count) ||
- (free_inodes != sb->s_free_inodes_count)) {
- if (ctx->options & E2F_OPT_READONLY)
- ext2fs_unmark_valid(fs);
- else {
- sb->s_free_blocks_count = free_blocks;
- sb->s_free_inodes_count = free_inodes;
- ext2fs_mark_super_dirty(fs);
- }
- }
-
- if ((sb->s_free_blocks_count > sb->s_blocks_count) ||
- (sb->s_free_inodes_count > sb->s_inodes_count))
- ext2fs_unmark_valid(fs);
-
-
- /*
- * If we have invalid bitmaps, set the error state of the
- * filesystem.
- */
- if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) {
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(fs);
- }
-
- clear_problem_context(&pctx);
-
- /*
- * If the UUID field isn't assigned, assign it.
- */
- if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid)) {
- if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
- uuid_generate(sb->s_uuid);
- ext2fs_mark_super_dirty(fs);
- fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
- }
- }
-
- /* FIXME - HURD support?
- * For the Hurd, check to see if the filetype option is set,
- * since it doesn't support it.
- */
- if (!(ctx->options & E2F_OPT_READONLY) &&
- fs->super->s_creator_os == EXT2_OS_HURD &&
- (fs->super->s_feature_incompat &
- EXT2_FEATURE_INCOMPAT_FILETYPE)) {
- if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) {
- fs->super->s_feature_incompat &=
- ~EXT2_FEATURE_INCOMPAT_FILETYPE;
- ext2fs_mark_super_dirty(fs);
-
- }
- }
-
- /*
- * If we have any of the compatibility flags set, we need to have a
- * revision 1 filesystem. Most kernels will not check the flags on
- * a rev 0 filesystem and we may have corruption issues because of
- * the incompatible changes to the filesystem.
- */
- if (!(ctx->options & E2F_OPT_READONLY) &&
- fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
- (fs->super->s_feature_compat ||
- fs->super->s_feature_ro_compat ||
- fs->super->s_feature_incompat) &&
- fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) {
- ext2fs_update_dynamic_rev(fs);
- ext2fs_mark_super_dirty(fs);
- }
-
- check_resize_inode(ctx);
-
- /*
- * Clean up any orphan inodes, if present.
- */
- if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) {
- fs->super->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(fs);
- }
-
- /*
- * Move the ext3 journal file, if necessary.
- */
- e2fsck_move_ext3_journal(ctx);
- return;
-}
-
-/*
- * swapfs.c --- byte-swap an ext2 filesystem
- */
-
-#ifdef ENABLE_SWAPFS
-
-struct swap_block_struct {
- ext2_ino_t ino;
- int isdir;
- errcode_t errcode;
- char *dir_buf;
- struct ext2_inode *inode;
-};
-
-/*
- * This is a helper function for block_iterate. We mark all of the
- * indirect and direct blocks as changed, so that block_iterate will
- * write them out.
- */
-static int swap_block(ext2_filsys fs, blk_t *block_nr, int blockcnt,
- void *priv_data)
-{
- errcode_t retval;
-
- struct swap_block_struct *sb = (struct swap_block_struct *) priv_data;
-
- if (sb->isdir && (blockcnt >= 0) && *block_nr) {
- retval = ext2fs_read_dir_block(fs, *block_nr, sb->dir_buf);
- if (retval) {
- sb->errcode = retval;
- return BLOCK_ABORT;
- }
- retval = ext2fs_write_dir_block(fs, *block_nr, sb->dir_buf);
- if (retval) {
- sb->errcode = retval;
- return BLOCK_ABORT;
- }
- }
- if (blockcnt >= 0) {
- if (blockcnt < EXT2_NDIR_BLOCKS)
- return 0;
- return BLOCK_CHANGED;
- }
- if (blockcnt == BLOCK_COUNT_IND) {
- if (*block_nr == sb->inode->i_block[EXT2_IND_BLOCK])
- return 0;
- return BLOCK_CHANGED;
- }
- if (blockcnt == BLOCK_COUNT_DIND) {
- if (*block_nr == sb->inode->i_block[EXT2_DIND_BLOCK])
- return 0;
- return BLOCK_CHANGED;
- }
- if (blockcnt == BLOCK_COUNT_TIND) {
- if (*block_nr == sb->inode->i_block[EXT2_TIND_BLOCK])
- return 0;
- return BLOCK_CHANGED;
- }
- return BLOCK_CHANGED;
-}
-
-/*
- * This function is responsible for byte-swapping all of the indirect,
- * block pointers. It is also responsible for byte-swapping directories.
- */
-static void swap_inode_blocks(e2fsck_t ctx, ext2_ino_t ino, char *block_buf,
- struct ext2_inode *inode)
-{
- errcode_t retval;
- struct swap_block_struct sb;
-
- sb.ino = ino;
- sb.inode = inode;
- sb.dir_buf = block_buf + ctx->fs->blocksize*3;
- sb.errcode = 0;
- sb.isdir = 0;
- if (LINUX_S_ISDIR(inode->i_mode))
- sb.isdir = 1;
-
- retval = ext2fs_block_iterate(ctx->fs, ino, 0, block_buf,
- swap_block, &sb);
- if (retval) {
- bb_error_msg(_("while calling ext2fs_block_iterate"));
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if (sb.errcode) {
- bb_error_msg(_("while calling iterator function"));
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
-}
-
-static void swap_inodes(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- dgrp_t group;
- unsigned int i;
- ext2_ino_t ino = 1;
- char *buf, *block_buf;
- errcode_t retval;
- struct ext2_inode * inode;
-
- e2fsck_use_inode_shortcuts(ctx, 1);
-
- retval = ext2fs_get_mem(fs->blocksize * fs->inode_blocks_per_group,
- &buf);
- if (retval) {
- bb_error_msg(_("while allocating inode buffer"));
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4,
- "block interate buffer");
- for (group = 0; group < fs->group_desc_count; group++) {
- retval = io_channel_read_blk(fs->io,
- fs->group_desc[group].bg_inode_table,
- fs->inode_blocks_per_group, buf);
- if (retval) {
- bb_error_msg(_("while reading inode table (group %d)"),
- group);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- inode = (struct ext2_inode *) buf;
- for (i=0; i < fs->super->s_inodes_per_group;
- i++, ino++, inode++) {
- ctx->stashed_ino = ino;
- ctx->stashed_inode = inode;
-
- if (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)
- ext2fs_swap_inode(fs, inode, inode, 0);
-
- /*
- * Skip deleted files.
- */
- if (inode->i_links_count == 0)
- continue;
-
- if (LINUX_S_ISDIR(inode->i_mode) ||
- ((inode->i_block[EXT2_IND_BLOCK] ||
- inode->i_block[EXT2_DIND_BLOCK] ||
- inode->i_block[EXT2_TIND_BLOCK]) &&
- ext2fs_inode_has_valid_blocks(inode)))
- swap_inode_blocks(ctx, ino, block_buf, inode);
-
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
-
- if (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE)
- ext2fs_swap_inode(fs, inode, inode, 1);
- }
- retval = io_channel_write_blk(fs->io,
- fs->group_desc[group].bg_inode_table,
- fs->inode_blocks_per_group, buf);
- if (retval) {
- bb_error_msg(_("while writing inode table (group %d)"),
- group);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- }
- ext2fs_free_mem(&buf);
- ext2fs_free_mem(&block_buf);
- e2fsck_use_inode_shortcuts(ctx, 0);
- ext2fs_flush_icache(fs);
-}
-
-#if defined(__powerpc__) && BB_BIG_ENDIAN
-/*
- * On the PowerPC, the big-endian variant of the ext2 filesystem
- * has its bitmaps stored as 32-bit words with bit 0 as the LSB
- * of each word. Thus a bitmap with only bit 0 set would be, as
- * a string of bytes, 00 00 00 01 00 ...
- * To cope with this, we byte-reverse each word of a bitmap if
- * we have a big-endian filesystem, that is, if we are *not*
- * byte-swapping other word-sized numbers.
- */
-#define EXT2_BIG_ENDIAN_BITMAPS
-#endif
-
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
-static void ext2fs_swap_bitmap(ext2fs_generic_bitmap bmap)
-{
- __u32 *p = (__u32 *) bmap->bitmap;
- int n, nbytes = (bmap->end - bmap->start + 7) / 8;
-
- for (n = nbytes / sizeof(__u32); n > 0; --n, ++p)
- *p = ext2fs_swab32(*p);
-}
-#endif
-
-
-#ifdef ENABLE_SWAPFS
-static void swap_filesys(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- if (!(ctx->options & E2F_OPT_PREEN))
- printf(_("Pass 0: Doing byte-swap of filesystem\n"));
-
- /* Byte swap */
-
- if (fs->super->s_mnt_count) {
- fprintf(stderr, _("%s: the filesystem must be freshly "
- "checked using fsck\n"
- "and not mounted before trying to "
- "byte-swap it.\n"), ctx->device_name);
- ctx->flags |= E2F_FLAG_ABORT;
- return;
- }
- if (fs->flags & EXT2_FLAG_SWAP_BYTES) {
- fs->flags &= ~(EXT2_FLAG_SWAP_BYTES|
- EXT2_FLAG_SWAP_BYTES_WRITE);
- fs->flags |= EXT2_FLAG_SWAP_BYTES_READ;
- } else {
- fs->flags &= ~EXT2_FLAG_SWAP_BYTES_READ;
- fs->flags |= EXT2_FLAG_SWAP_BYTES_WRITE;
- }
- swap_inodes(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- return;
- if (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE)
- fs->flags |= EXT2_FLAG_SWAP_BYTES;
- fs->flags &= ~(EXT2_FLAG_SWAP_BYTES_READ|
- EXT2_FLAG_SWAP_BYTES_WRITE);
-
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
- e2fsck_read_bitmaps(ctx);
- ext2fs_swap_bitmap(fs->inode_map);
- ext2fs_swap_bitmap(fs->block_map);
- fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_IB_DIRTY;
-#endif
- fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
- ext2fs_flush(fs);
- fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
-}
-#endif /* ENABLE_SWAPFS */
-
-#endif
-
-/*
- * util.c --- miscellaneous utilities
- */
-
-
-void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
- const char *description)
-{
- void *ret;
- char buf[256];
-
- ret = malloc(size);
- if (!ret) {
- sprintf(buf, "Can't allocate %s\n", description);
- bb_error_msg_and_die(buf);
- }
- memset(ret, 0, size);
- return ret;
-}
-
-static char *string_copy(const char *str, int len)
-{
- char *ret;
-
- if (!str)
- return NULL;
- if (!len)
- len = strlen(str);
- ret = malloc(len+1);
- if (ret) {
- strncpy(ret, str, len);
- ret[len] = 0;
- }
- return ret;
-}
-
-#ifndef HAVE_CONIO_H
-static int read_a_char(void)
-{
- char c;
- int r;
- int fail = 0;
-
- while(1) {
- if (e2fsck_global_ctx &&
- (e2fsck_global_ctx->flags & E2F_FLAG_CANCEL)) {
- return 3;
- }
- r = read(0, &c, 1);
- if (r == 1)
- return c;
- if (fail++ > 100)
- break;
- }
- return EOF;
-}
-#endif
-
-static int ask_yn(const char * string, int def)
-{
- int c;
- const char *defstr;
- static const char short_yes[] = "yY";
- static const char short_no[] = "nN";
-
-#ifdef HAVE_TERMIOS_H
- struct termios termios, tmp;
-
- tcgetattr (0, &termios);
- tmp = termios;
- tmp.c_lflag &= ~(ICANON | ECHO);
- tmp.c_cc[VMIN] = 1;
- tmp.c_cc[VTIME] = 0;
- tcsetattr (0, TCSANOW, &tmp);
-#endif
-
- if (def == 1)
- defstr = "<y>";
- else if (def == 0)
- defstr = "<n>";
- else
- defstr = " (y/n)";
- printf("%s%s? ", string, defstr);
- while (1) {
- fflush (stdout);
- if ((c = read_a_char()) == EOF)
- break;
- if (c == 3) {
-#ifdef HAVE_TERMIOS_H
- tcsetattr (0, TCSANOW, &termios);
-#endif
- if (e2fsck_global_ctx &&
- e2fsck_global_ctx->flags & E2F_FLAG_SETJMP_OK) {
- puts("\n");
- longjmp(e2fsck_global_ctx->abort_loc, 1);
- }
- puts(_("cancelled!\n"));
- return 0;
- }
- if (strchr(short_yes, (char) c)) {
- def = 1;
- break;
- }
- else if (strchr(short_no, (char) c)) {
- def = 0;
- break;
- }
- else if ((c == ' ' || c == '\n') && (def != -1))
- break;
- }
- if (def)
- puts("yes\n");
- else
- puts ("no\n");
-#ifdef HAVE_TERMIOS_H
- tcsetattr (0, TCSANOW, &termios);
-#endif
- return def;
-}
-
-int ask (e2fsck_t ctx, const char * string, int def)
-{
- if (ctx->options & E2F_OPT_NO) {
- printf(_("%s? no\n\n"), string);
- return 0;
- }
- if (ctx->options & E2F_OPT_YES) {
- printf(_("%s? yes\n\n"), string);
- return 1;
- }
- if (ctx->options & E2F_OPT_PREEN) {
- printf("%s? %s\n\n", string, def ? _("yes") : _("no"));
- return def;
- }
- return ask_yn(string, def);
-}
-
-void e2fsck_read_bitmaps(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
-
- if (ctx->invalid_bitmaps) {
- bb_error_msg(_("e2fsck_read_bitmaps: illegal bitmap block(s) for %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
-
- ehandler_operation(_("reading inode and block bitmaps"));
- retval = ext2fs_read_bitmaps(fs);
- ehandler_operation(0);
- if (retval) {
- bb_error_msg(_("while retrying to read bitmaps for %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
-}
-
-static void e2fsck_write_bitmaps(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- errcode_t retval;
-
- if (ext2fs_test_bb_dirty(fs)) {
- ehandler_operation(_("writing block bitmaps"));
- retval = ext2fs_write_block_bitmap(fs);
- ehandler_operation(0);
- if (retval) {
- bb_error_msg(_("while retrying to write block bitmaps for %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
- }
-
- if (ext2fs_test_ib_dirty(fs)) {
- ehandler_operation(_("writing inode bitmaps"));
- retval = ext2fs_write_inode_bitmap(fs);
- ehandler_operation(0);
- if (retval) {
- bb_error_msg(_("while retrying to write inode bitmaps for %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
- }
-}
-
-void preenhalt(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
-
- if (!(ctx->options & E2F_OPT_PREEN))
- return;
- fprintf(stderr, _("\n\n%s: UNEXPECTED INCONSISTENCY; "
- "RUN fsck MANUALLY.\n\t(i.e., without -a or -p options)\n"),
- ctx->device_name);
- if (fs != NULL) {
- fs->super->s_state |= EXT2_ERROR_FS;
- ext2fs_mark_super_dirty(fs);
- ext2fs_close(fs);
- }
- exit(EXIT_UNCORRECTED);
-}
-
-void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
- struct ext2_inode * inode, const char *proc)
-{
- int retval;
-
- retval = ext2fs_read_inode(ctx->fs, ino, inode);
- if (retval) {
- bb_error_msg(_("while reading inode %ld in %s"), ino, proc);
- bb_error_msg_and_die(0);
- }
-}
-
-extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
- struct ext2_inode * inode, int bufsize,
- const char *proc)
-{
- int retval;
-
- retval = ext2fs_write_inode_full(ctx->fs, ino, inode, bufsize);
- if (retval) {
- bb_error_msg(_("while writing inode %ld in %s"), ino, proc);
- bb_error_msg_and_die(0);
- }
-}
-
-extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
- struct ext2_inode * inode, const char *proc)
-{
- int retval;
-
- retval = ext2fs_write_inode(ctx->fs, ino, inode);
- if (retval) {
- bb_error_msg(_("while writing inode %ld in %s"), ino, proc);
- bb_error_msg_and_die(0);
- }
-}
-
-blk_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs, const char *name,
- io_manager manager)
-{
- struct ext2_super_block *sb;
- io_channel io = NULL;
- void *buf = NULL;
- int blocksize;
- blk_t superblock, ret_sb = 8193;
-
- if (fs && fs->super) {
- ret_sb = (fs->super->s_blocks_per_group +
- fs->super->s_first_data_block);
- if (ctx) {
- ctx->superblock = ret_sb;
- ctx->blocksize = fs->blocksize;
- }
- return ret_sb;
- }
-
- if (ctx) {
- if (ctx->blocksize) {
- ret_sb = ctx->blocksize * 8;
- if (ctx->blocksize == 1024)
- ret_sb++;
- ctx->superblock = ret_sb;
- return ret_sb;
- }
- ctx->superblock = ret_sb;
- ctx->blocksize = 1024;
- }
-
- if (!name || !manager)
- goto cleanup;
-
- if (manager->open(name, 0, &io) != 0)
- goto cleanup;
-
- if (ext2fs_get_mem(SUPERBLOCK_SIZE, &buf))
- goto cleanup;
- sb = (struct ext2_super_block *) buf;
-
- for (blocksize = EXT2_MIN_BLOCK_SIZE;
- blocksize <= EXT2_MAX_BLOCK_SIZE ; blocksize *= 2) {
- superblock = blocksize*8;
- if (blocksize == 1024)
- superblock++;
- io_channel_set_blksize(io, blocksize);
- if (io_channel_read_blk(io, superblock,
- -SUPERBLOCK_SIZE, buf))
- continue;
-#if BB_BIG_ENDIAN
- if (sb->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
- ext2fs_swap_super(sb);
-#endif
- if (sb->s_magic == EXT2_SUPER_MAGIC) {
- ret_sb = superblock;
- if (ctx) {
- ctx->superblock = superblock;
- ctx->blocksize = blocksize;
- }
- break;
- }
- }
-
-cleanup:
- if (io)
- io_channel_close(io);
- ext2fs_free_mem(&buf);
- return ret_sb;
-}
-
-
-/*
- * This function runs through the e2fsck passes and calls them all,
- * returning restart, abort, or cancel as necessary...
- */
-typedef void (*pass_t)(e2fsck_t ctx);
-
-static const pass_t e2fsck_passes[] = {
- e2fsck_pass1, e2fsck_pass2, e2fsck_pass3, e2fsck_pass4,
- e2fsck_pass5, 0 };
-
-#define E2F_FLAG_RUN_RETURN (E2F_FLAG_SIGNAL_MASK|E2F_FLAG_RESTART)
-
-static int e2fsck_run(e2fsck_t ctx)
-{
- int i;
- pass_t e2fsck_pass;
-
- if (setjmp(ctx->abort_loc)) {
- ctx->flags &= ~E2F_FLAG_SETJMP_OK;
- return (ctx->flags & E2F_FLAG_RUN_RETURN);
- }
- ctx->flags |= E2F_FLAG_SETJMP_OK;
-
- for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) {
- if (ctx->flags & E2F_FLAG_RUN_RETURN)
- break;
- e2fsck_pass(ctx);
- if (ctx->progress)
- (void) (ctx->progress)(ctx, 0, 0, 0);
- }
- ctx->flags &= ~E2F_FLAG_SETJMP_OK;
-
- if (ctx->flags & E2F_FLAG_RUN_RETURN)
- return (ctx->flags & E2F_FLAG_RUN_RETURN);
- return 0;
-}
-
-
-/*
- * unix.c - The unix-specific code for e2fsck
- */
-
-
-/* Command line options */
-static int swapfs;
-#ifdef ENABLE_SWAPFS
-static int normalize_swapfs;
-#endif
-static int cflag; /* check disk */
-static int show_version_only;
-static int verbose;
-
-#define P_E2(singular, plural, n) n, ((n) == 1 ? singular : plural)
-
-static void show_stats(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- int inodes, inodes_used, blocks, blocks_used;
- int dir_links;
- int num_files, num_links;
- int frag_percent;
-
- dir_links = 2 * ctx->fs_directory_count - 1;
- num_files = ctx->fs_total_count - dir_links;
- num_links = ctx->fs_links_count - dir_links;
- inodes = fs->super->s_inodes_count;
- inodes_used = (fs->super->s_inodes_count -
- fs->super->s_free_inodes_count);
- blocks = fs->super->s_blocks_count;
- blocks_used = (fs->super->s_blocks_count -
- fs->super->s_free_blocks_count);
-
- frag_percent = (10000 * ctx->fs_fragmented) / inodes_used;
- frag_percent = (frag_percent + 5) / 10;
-
- if (!verbose) {
- printf("%s: %d/%d files (%0d.%d%% non-contiguous), %d/%d blocks\n",
- ctx->device_name, inodes_used, inodes,
- frag_percent / 10, frag_percent % 10,
- blocks_used, blocks);
- return;
- }
- printf("\n%8d inode%s used (%d%%)\n", P_E2("", "s", inodes_used),
- 100 * inodes_used / inodes);
- printf("%8d non-contiguous inode%s (%0d.%d%%)\n",
- P_E2("", "s", ctx->fs_fragmented),
- frag_percent / 10, frag_percent % 10);
- printf(_(" # of inodes with ind/dind/tind blocks: %d/%d/%d\n"),
- ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
- printf("%8d block%s used (%d%%)\n", P_E2("", "s", blocks_used),
- (int) ((long long) 100 * blocks_used / blocks));
- printf("%8d large file%s\n", P_E2("", "s", ctx->large_files));
- printf("\n%8d regular file%s\n", P_E2("", "s", ctx->fs_regular_count));
- printf("%8d director%s\n", P_E2("y", "ies", ctx->fs_directory_count));
- printf("%8d character device file%s\n", P_E2("", "s", ctx->fs_chardev_count));
- printf("%8d block device file%s\n", P_E2("", "s", ctx->fs_blockdev_count));
- printf("%8d fifo%s\n", P_E2("", "s", ctx->fs_fifo_count));
- printf("%8d link%s\n", P_E2("", "s", ctx->fs_links_count - dir_links));
- printf("%8d symbolic link%s", P_E2("", "s", ctx->fs_symlinks_count));
- printf(" (%d fast symbolic link%s)\n", P_E2("", "s", ctx->fs_fast_symlinks_count));
- printf("%8d socket%s--------\n\n", P_E2("", "s", ctx->fs_sockets_count));
- printf("%8d file%s\n", P_E2("", "s", ctx->fs_total_count - dir_links));
-}
-
-static void check_mount(e2fsck_t ctx)
-{
- errcode_t retval;
- int cont;
-
- retval = ext2fs_check_if_mounted(ctx->filesystem_name,
- &ctx->mount_flags);
- if (retval) {
- bb_error_msg(_("while determining whether %s is mounted."),
- ctx->filesystem_name);
- return;
- }
-
- /*
- * If the filesystem isn't mounted, or it's the root filesystem
- * and it's mounted read-only, then everything's fine.
- */
- if ((!(ctx->mount_flags & EXT2_MF_MOUNTED)) ||
- ((ctx->mount_flags & EXT2_MF_ISROOT) &&
- (ctx->mount_flags & EXT2_MF_READONLY)))
- return;
-
- if (ctx->options & E2F_OPT_READONLY) {
- printf(_("Warning! %s is mounted.\n"), ctx->filesystem_name);
- return;
- }
-
- printf(_("%s is mounted. "), ctx->filesystem_name);
- if (!ctx->interactive)
- bb_error_msg_and_die(_("Cannot continue, aborting."));
- printf(_("\n\n\007\007\007\007WARNING!!! "
- "Running e2fsck on a mounted filesystem may cause\n"
- "SEVERE filesystem damage.\007\007\007\n\n"));
- cont = ask_yn(_("Do you really want to continue"), -1);
- if (!cont) {
- printf(_("check aborted.\n"));
- exit (0);
- }
- return;
-}
-
-static int is_on_batt(void)
-{
- FILE *f;
- DIR *d;
- char tmp[80], tmp2[80], fname[80];
- unsigned int acflag;
- struct dirent* de;
-
- f = fopen("/proc/apm", "r");
- if (f) {
- if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
- acflag = 1;
- fclose(f);
- return (acflag != 1);
- }
- d = opendir("/proc/acpi/ac_adapter");
- if (d) {
- while ((de=readdir(d)) != NULL) {
- if (!strncmp(".", de->d_name, 1))
- continue;
- snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
- de->d_name);
- f = fopen(fname, "r");
- if (!f)
- continue;
- if (fscanf(f, "%s %s", tmp2, tmp) != 2)
- tmp[0] = 0;
- fclose(f);
- if (strncmp(tmp, "off-line", 8) == 0) {
- closedir(d);
- return 1;
- }
- }
- closedir(d);
- }
- return 0;
-}
-
-/*
- * This routine checks to see if a filesystem can be skipped; if so,
- * it will exit with EXIT_OK. Under some conditions it will print a
- * message explaining why a check is being forced.
- */
-static void check_if_skip(e2fsck_t ctx)
-{
- ext2_filsys fs = ctx->fs;
- const char *reason = NULL;
- unsigned int reason_arg = 0;
- long next_check;
- int batt = is_on_batt();
- time_t now = time(0);
-
- if ((ctx->options & E2F_OPT_FORCE) || cflag || swapfs)
- return;
-
- if ((fs->super->s_state & EXT2_ERROR_FS) ||
- !ext2fs_test_valid(fs))
- reason = _(" contains a file system with errors");
- else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
- reason = _(" was not cleanly unmounted");
- else if ((fs->super->s_max_mnt_count > 0) &&
- (fs->super->s_mnt_count >=
- (unsigned) fs->super->s_max_mnt_count)) {
- reason = _(" has been mounted %u times without being checked");
- reason_arg = fs->super->s_mnt_count;
- if (batt && (fs->super->s_mnt_count <
- (unsigned) fs->super->s_max_mnt_count*2))
- reason = 0;
- } else if (fs->super->s_checkinterval &&
- ((now - fs->super->s_lastcheck) >=
- fs->super->s_checkinterval)) {
- reason = _(" has gone %u days without being checked");
- reason_arg = (now - fs->super->s_lastcheck)/(3600*24);
- if (batt && ((now - fs->super->s_lastcheck) <
- fs->super->s_checkinterval*2))
- reason = 0;
- }
- if (reason) {
- fputs(ctx->device_name, stdout);
- printf(reason, reason_arg);
- fputs(_(", check forced.\n"), stdout);
- return;
- }
- printf(_("%s: clean, %d/%d files, %d/%d blocks"), ctx->device_name,
- fs->super->s_inodes_count - fs->super->s_free_inodes_count,
- fs->super->s_inodes_count,
- fs->super->s_blocks_count - fs->super->s_free_blocks_count,
- fs->super->s_blocks_count);
- next_check = 100000;
- if (fs->super->s_max_mnt_count > 0) {
- next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
- if (next_check <= 0)
- next_check = 1;
- }
- if (fs->super->s_checkinterval &&
- ((now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
- next_check = 1;
- if (next_check <= 5) {
- if (next_check == 1)
- fputs(_(" (check after next mount)"), stdout);
- else
- printf(_(" (check in %ld mounts)"), next_check);
- }
- fputc('\n', stdout);
- ext2fs_close(fs);
- ctx->fs = NULL;
- e2fsck_free_context(ctx);
- exit(EXIT_OK);
-}
-
-/*
- * For completion notice
- */
-struct percent_tbl {
- int max_pass;
- int table[32];
-};
-static const struct percent_tbl e2fsck_tbl = {
- 5, { 0, 70, 90, 92, 95, 100 }
-};
-
-static char bar[128], spaces[128];
-
-static float calc_percent(const struct percent_tbl *tbl, int pass, int curr,
- int max)
-{
- float percent;
-
- if (pass <= 0)
- return 0.0;
- if (pass > tbl->max_pass || max == 0)
- return 100.0;
- percent = ((float) curr) / ((float) max);
- return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
- + tbl->table[pass-1]);
-}
-
-void e2fsck_clear_progbar(e2fsck_t ctx)
-{
- if (!(ctx->flags & E2F_FLAG_PROG_BAR))
- return;
-
- printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
- ctx->stop_meta);
- fflush(stdout);
- ctx->flags &= ~E2F_FLAG_PROG_BAR;
-}
-
-int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
- unsigned int dpynum)
-{
- static const char spinner[] = "\\|/-";
- int i;
- unsigned int tick;
- struct timeval tv;
- int dpywidth;
- int fixed_percent;
-
- if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
- return 0;
-
- /*
- * Calculate the new progress position. If the
- * percentage hasn't changed, then we skip out right
- * away.
- */
- fixed_percent = (int) ((10 * percent) + 0.5);
- if (ctx->progress_last_percent == fixed_percent)
- return 0;
- ctx->progress_last_percent = fixed_percent;
-
- /*
- * If we've already updated the spinner once within
- * the last 1/8th of a second, no point doing it
- * again.
- */
- gettimeofday(&tv, NULL);
- tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
- if ((tick == ctx->progress_last_time) &&
- (fixed_percent != 0) && (fixed_percent != 1000))
- return 0;
- ctx->progress_last_time = tick;
-
- /*
- * Advance the spinner, and note that the progress bar
- * will be on the screen
- */
- ctx->progress_pos = (ctx->progress_pos+1) & 3;
- ctx->flags |= E2F_FLAG_PROG_BAR;
-
- dpywidth = 66 - strlen(label);
- dpywidth = 8 * (dpywidth / 8);
- if (dpynum)
- dpywidth -= 8;
-
- i = ((percent * dpywidth) + 50) / 100;
- printf("%s%s: |%s%s", ctx->start_meta, label,
- bar + (sizeof(bar) - (i+1)),
- spaces + (sizeof(spaces) - (dpywidth - i + 1)));
- if (fixed_percent == 1000)
- fputc('|', stdout);
- else
- fputc(spinner[ctx->progress_pos & 3], stdout);
- printf(" %4.1f%% ", percent);
- if (dpynum)
- printf("%u\r", dpynum);
- else
- fputs(" \r", stdout);
- fputs(ctx->stop_meta, stdout);
-
- if (fixed_percent == 1000)
- e2fsck_clear_progbar(ctx);
- fflush(stdout);
-
- return 0;
-}
-
-static int e2fsck_update_progress(e2fsck_t ctx, int pass,
- unsigned long cur, unsigned long max)
-{
- char buf[80];
- float percent;
-
- if (pass == 0)
- return 0;
-
- if (ctx->progress_fd) {
- sprintf(buf, "%d %lu %lu\n", pass, cur, max);
- write(ctx->progress_fd, buf, strlen(buf));
- } else {
- percent = calc_percent(&e2fsck_tbl, pass, cur, max);
- e2fsck_simple_progress(ctx, ctx->device_name,
- percent, 0);
- }
- return 0;
-}
-
-static void reserve_stdio_fds(void)
-{
- int fd;
-
- while (1) {
- fd = open(bb_dev_null, O_RDWR);
- if (fd > 2)
- break;
- if (fd < 0) {
- fprintf(stderr, _("ERROR: Cannot open "
- "/dev/null (%s)\n"),
- strerror(errno));
- break;
- }
- }
- close(fd);
-}
-
-static void signal_progress_on(int sig FSCK_ATTR((unused)))
-{
- e2fsck_t ctx = e2fsck_global_ctx;
-
- if (!ctx)
- return;
-
- ctx->progress = e2fsck_update_progress;
- ctx->progress_fd = 0;
-}
-
-static void signal_progress_off(int sig FSCK_ATTR((unused)))
-{
- e2fsck_t ctx = e2fsck_global_ctx;
-
- if (!ctx)
- return;
-
- e2fsck_clear_progbar(ctx);
- ctx->progress = 0;
-}
-
-static void signal_cancel(int sig FSCK_ATTR((unused)))
-{
- e2fsck_t ctx = e2fsck_global_ctx;
-
- if (!ctx)
- exit(FSCK_CANCELED);
-
- ctx->flags |= E2F_FLAG_CANCEL;
-}
-
-static void parse_extended_opts(e2fsck_t ctx, const char *opts)
-{
- char *buf, *token, *next, *p, *arg;
- int ea_ver;
- int extended_usage = 0;
-
- buf = string_copy(opts, 0);
- for (token = buf; token && *token; token = next) {
- p = strchr(token, ',');
- next = 0;
- if (p) {
- *p = 0;
- next = p+1;
- }
- arg = strchr(token, '=');
- if (arg) {
- *arg = 0;
- arg++;
- }
- if (strcmp(token, "ea_ver") == 0) {
- if (!arg) {
- extended_usage++;
- continue;
- }
- ea_ver = strtoul(arg, &p, 0);
- if (*p ||
- ((ea_ver != 1) && (ea_ver != 2))) {
- fprintf(stderr,
- _("Invalid EA version.\n"));
- extended_usage++;
- continue;
- }
- ctx->ext_attr_ver = ea_ver;
- } else {
- fprintf(stderr, _("Unknown extended option: %s\n"),
- token);
- extended_usage++;
- }
- }
- if (extended_usage) {
- bb_error_msg_and_die(
- "Extended options are separated by commas, "
- "and may take an argument which\n"
- "is set off by an equals ('=') sign. "
- "Valid extended options are:\n"
- "\tea_ver=<ea_version (1 or 2)>\n\n");
- }
-}
-
-
-static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
-{
- int flush = 0;
- int c, fd;
- e2fsck_t ctx;
- errcode_t retval;
- struct sigaction sa;
- char *extended_opts = 0;
-
- retval = e2fsck_allocate_context(&ctx);
- if (retval)
- return retval;
-
- *ret_ctx = ctx;
-
- setvbuf(stdout, NULL, _IONBF, BUFSIZ);
- setvbuf(stderr, NULL, _IONBF, BUFSIZ);
- if (isatty(0) && isatty(1)) {
- ctx->interactive = 1;
- } else {
- ctx->start_meta[0] = '\001';
- ctx->stop_meta[0] = '\002';
- }
- memset(bar, '=', sizeof(bar)-1);
- memset(spaces, ' ', sizeof(spaces)-1);
- blkid_get_cache(&ctx->blkid, NULL);
-
- if (argc && *argv)
- ctx->program_name = *argv;
- else
- ctx->program_name = "e2fsck";
- while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
- switch (c) {
- case 'C':
- ctx->progress = e2fsck_update_progress;
- ctx->progress_fd = atoi(optarg);
- if (!ctx->progress_fd)
- break;
- /* Validate the file descriptor to avoid disasters */
- fd = dup(ctx->progress_fd);
- if (fd < 0) {
- fprintf(stderr,
- _("Error validating file descriptor %d: %s\n"),
- ctx->progress_fd,
- error_message(errno));
- bb_error_msg_and_die(_("Invalid completion information file descriptor"));
- } else
- close(fd);
- break;
- case 'D':
- ctx->options |= E2F_OPT_COMPRESS_DIRS;
- break;
- case 'E':
- extended_opts = optarg;
- break;
- case 'p':
- case 'a':
- if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
- conflict_opt:
- bb_error_msg_and_die(_("Only one the options -p/-a, -n or -y may be specified."));
- }
- ctx->options |= E2F_OPT_PREEN;
- break;
- case 'n':
- if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
- goto conflict_opt;
- ctx->options |= E2F_OPT_NO;
- break;
- case 'y':
- if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
- goto conflict_opt;
- ctx->options |= E2F_OPT_YES;
- break;
- case 't':
- /* FIXME - This needs to go away in a future path - will change binary */
- fprintf(stderr, _("The -t option is not "
- "supported on this version of e2fsck.\n"));
- break;
- case 'c':
- if (cflag++)
- ctx->options |= E2F_OPT_WRITECHECK;
- ctx->options |= E2F_OPT_CHECKBLOCKS;
- break;
- case 'r':
- /* What we do by default, anyway! */
- break;
- case 'b':
- ctx->use_superblock = atoi(optarg);
- ctx->flags |= E2F_FLAG_SB_SPECIFIED;
- break;
- case 'B':
- ctx->blocksize = atoi(optarg);
- break;
- case 'I':
- ctx->inode_buffer_blocks = atoi(optarg);
- break;
- case 'j':
- ctx->journal_name = string_copy(optarg, 0);
- break;
- case 'P':
- ctx->process_inode_size = atoi(optarg);
- break;
- case 'd':
- ctx->options |= E2F_OPT_DEBUG;
- break;
- case 'f':
- ctx->options |= E2F_OPT_FORCE;
- break;
- case 'F':
- flush = 1;
- break;
- case 'v':
- verbose = 1;
- break;
- case 'V':
- show_version_only = 1;
- break;
- case 'N':
- ctx->device_name = optarg;
- break;
-#ifdef ENABLE_SWAPFS
- case 's':
- normalize_swapfs = 1;
- case 'S':
- swapfs = 1;
- break;
-#else
- case 's':
- case 'S':
- fprintf(stderr, _("Byte-swapping filesystems "
- "not compiled in this version "
- "of e2fsck\n"));
- exit(1);
-#endif
- default:
- bb_show_usage();
- }
- if (show_version_only)
- return 0;
- if (optind != argc - 1)
- bb_show_usage();
- if ((ctx->options & E2F_OPT_NO) &&
- !cflag && !swapfs && !(ctx->options & E2F_OPT_COMPRESS_DIRS))
- ctx->options |= E2F_OPT_READONLY;
- ctx->io_options = strchr(argv[optind], '?');
- if (ctx->io_options)
- *ctx->io_options++ = 0;
- ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
- if (!ctx->filesystem_name) {
- bb_error_msg(_("Unable to resolve '%s'"), argv[optind]);
- bb_error_msg_and_die(0);
- }
- if (extended_opts)
- parse_extended_opts(ctx, extended_opts);
-
- if (flush) {
- fd = open(ctx->filesystem_name, O_RDONLY, 0);
- if (fd < 0) {
- bb_error_msg(_("while opening %s for flushing"),
- ctx->filesystem_name);
- bb_error_msg_and_die(0);
- }
- if ((retval = ext2fs_sync_device(fd, 1))) {
- bb_error_msg(_("while trying to flush %s"),
- ctx->filesystem_name);
- bb_error_msg_and_die(0);
- }
- close(fd);
- }
-#ifdef ENABLE_SWAPFS
- if (swapfs && cflag) {
- fprintf(stderr, _("Incompatible options not "
- "allowed when byte-swapping.\n"));
- exit(EXIT_USAGE);
- }
-#endif
- /*
- * Set up signal action
- */
- memset(&sa, 0, sizeof(struct sigaction));
- sa.sa_handler = signal_cancel;
- sigaction(SIGINT, &sa, 0);
- sigaction(SIGTERM, &sa, 0);
-#ifdef SA_RESTART
- sa.sa_flags = SA_RESTART;
-#endif
- e2fsck_global_ctx = ctx;
- sa.sa_handler = signal_progress_on;
- sigaction(SIGUSR1, &sa, 0);
- sa.sa_handler = signal_progress_off;
- sigaction(SIGUSR2, &sa, 0);
-
- /* Update our PATH to include /sbin if we need to run badblocks */
- if (cflag)
- e2fs_set_sbin_path();
- return 0;
-}
-
-static const char my_ver_string[] = E2FSPROGS_VERSION;
-static const char my_ver_date[] = E2FSPROGS_DATE;
-
-int e2fsck_main (int argc, char *argv[])
-{
- errcode_t retval;
- int exit_value = EXIT_OK;
- ext2_filsys fs = 0;
- io_manager io_ptr;
- struct ext2_super_block *sb;
- const char *lib_ver_date;
- int my_ver, lib_ver;
- e2fsck_t ctx;
- struct problem_context pctx;
- int flags, run_result;
-
- clear_problem_context(&pctx);
-
- my_ver = ext2fs_parse_version_string(my_ver_string);
- lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
- if (my_ver > lib_ver) {
- fprintf( stderr, _("Error: ext2fs library version "
- "out of date!\n"));
- show_version_only++;
- }
-
- retval = PRS(argc, argv, &ctx);
- if (retval) {
- bb_error_msg(_("while trying to initialize program"));
- exit(EXIT_ERROR);
- }
- reserve_stdio_fds();
-
- if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
- fprintf(stderr, "e2fsck %s (%s)\n", my_ver_string,
- my_ver_date);
-
- if (show_version_only) {
- fprintf(stderr, _("\tUsing %s, %s\n"),
- error_message(EXT2_ET_BASE), lib_ver_date);
- exit(EXIT_OK);
- }
-
- check_mount(ctx);
-
- if (!(ctx->options & E2F_OPT_PREEN) &&
- !(ctx->options & E2F_OPT_NO) &&
- !(ctx->options & E2F_OPT_YES)) {
- if (!ctx->interactive)
- bb_error_msg_and_die(_("need terminal for interactive repairs"));
- }
- ctx->superblock = ctx->use_superblock;
-restart:
-#ifdef CONFIG_TESTIO_DEBUG
- io_ptr = test_io_manager;
- test_io_backing_manager = unix_io_manager;
-#else
- io_ptr = unix_io_manager;
-#endif
- flags = 0;
- if ((ctx->options & E2F_OPT_READONLY) == 0)
- flags |= EXT2_FLAG_RW;
-
- if (ctx->superblock && ctx->blocksize) {
- retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
- flags, ctx->superblock, ctx->blocksize,
- io_ptr, &fs);
- } else if (ctx->superblock) {
- int blocksize;
- for (blocksize = EXT2_MIN_BLOCK_SIZE;
- blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
- retval = ext2fs_open2(ctx->filesystem_name,
- ctx->io_options, flags,
- ctx->superblock, blocksize,
- io_ptr, &fs);
- if (!retval)
- break;
- }
- } else
- retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
- flags, 0, 0, io_ptr, &fs);
- if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
- !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
- ((retval == EXT2_ET_BAD_MAGIC) ||
- ((retval == 0) && ext2fs_check_desc(fs)))) {
- if (!fs || (fs->group_desc_count > 1)) {
- printf(_("%s trying backup blocks...\n"),
- retval ? _("Couldn't find ext2 superblock,") :
- _("Group descriptors look bad..."));
- get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
- if (fs)
- ext2fs_close(fs);
- goto restart;
- }
- }
- if (retval) {
- bb_error_msg(_("while trying to open %s"),
- ctx->filesystem_name);
- if (retval == EXT2_ET_REV_TOO_HIGH) {
- printf(_("The filesystem revision is apparently "
- "too high for this version of e2fsck.\n"
- "(Or the filesystem superblock "
- "is corrupt)\n\n"));
- fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
- } else if (retval == EXT2_ET_SHORT_READ)
- printf(_("Could this be a zero-length partition?\n"));
- else if ((retval == EPERM) || (retval == EACCES))
- printf(_("You must have %s access to the "
- "filesystem or be root\n"),
- (ctx->options & E2F_OPT_READONLY) ?
- "r/o" : "r/w");
- else if (retval == ENXIO)
- printf(_("Possibly non-existent or swap device?\n"));
-#ifdef EROFS
- else if (retval == EROFS)
- printf(_("Disk write-protected; use the -n option "
- "to do a read-only\n"
- "check of the device.\n"));
-#endif
- else
- fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
- bb_error_msg_and_die(0);
- }
- ctx->fs = fs;
- fs->priv_data = ctx;
- sb = fs->super;
- if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
- bb_error_msg(_("while trying to open %s"),
- ctx->filesystem_name);
- get_newer:
- bb_error_msg_and_die(_("Get a newer version of e2fsck!"));
- }
-
- /*
- * Set the device name, which is used whenever we print error
- * or informational messages to the user.
- */
- if (ctx->device_name == 0 &&
- (sb->s_volume_name[0] != 0)) {
- ctx->device_name = string_copy(sb->s_volume_name,
- sizeof(sb->s_volume_name));
- }
- if (ctx->device_name == 0)
- ctx->device_name = ctx->filesystem_name;
-
- /*
- * Make sure the ext3 superblock fields are consistent.
- */
- retval = e2fsck_check_ext3_journal(ctx);
- if (retval) {
- bb_error_msg(_("while checking ext3 journal for %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
-
- /*
- * Check to see if we need to do ext3-style recovery. If so,
- * do it, and then restart the fsck.
- */
- if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
- if (ctx->options & E2F_OPT_READONLY) {
- printf(_("Warning: skipping journal recovery "
- "because doing a read-only filesystem "
- "check.\n"));
- io_channel_flush(ctx->fs->io);
- } else {
- if (ctx->flags & E2F_FLAG_RESTARTED) {
- /*
- * Whoops, we attempted to run the
- * journal twice. This should never
- * happen, unless the hardware or
- * device driver is being bogus.
- */
- bb_error_msg(_("cannot set superblock flags on %s"), ctx->device_name);
- bb_error_msg_and_die(0);
- }
- retval = e2fsck_run_ext3_journal(ctx);
- if (retval) {
- bb_error_msg(_("while recovering ext3 journal of %s"),
- ctx->device_name);
- bb_error_msg_and_die(0);
- }
- ext2fs_close(ctx->fs);
- ctx->fs = 0;
- ctx->flags |= E2F_FLAG_RESTARTED;
- goto restart;
- }
- }
-
- /*
- * Check for compatibility with the feature sets. We need to
- * be more stringent than ext2fs_open().
- */
- if ((sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) ||
- (sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) {
- bb_error_msg("(%s)", ctx->device_name);
- goto get_newer;
- }
- if (sb->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
- bb_error_msg("(%s)", ctx->device_name);
- goto get_newer;
- }
-#ifdef ENABLE_COMPRESSION
- /* FIXME - do we support this at all? */
- if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
- bb_error_msg(_("Warning: compression support is experimental."));
-#endif
-#ifndef ENABLE_HTREE
- if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
- bb_error_msg(_("E2fsck not compiled with HTREE support,\n\t"
- "but filesystem %s has HTREE directories."),
- ctx->device_name);
- goto get_newer;
- }
-#endif
-
- /*
- * If the user specified a specific superblock, presumably the
- * master superblock has been trashed. So we mark the
- * superblock as dirty, so it can be written out.
- */
- if (ctx->superblock &&
- !(ctx->options & E2F_OPT_READONLY))
- ext2fs_mark_super_dirty(fs);
-
- /*
- * We only update the master superblock because (a) paranoia;
- * we don't want to corrupt the backup superblocks, and (b) we
- * don't need to update the mount count and last checked
- * fields in the backup superblock (the kernel doesn't
- * update the backup superblocks anyway).
- */
- fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
-
- ehandler_init(fs->io);
-
- if (ctx->superblock)
- set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
- ext2fs_mark_valid(fs);
- check_super_block(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- bb_error_msg_and_die(0);
- check_if_skip(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- bb_error_msg_and_die(0);
-#ifdef ENABLE_SWAPFS
-
-#ifdef WORDS_BIGENDIAN
-#define NATIVE_FLAG EXT2_FLAG_SWAP_BYTES
-#else
-#define NATIVE_FLAG 0
-#endif
-
-
- if (normalize_swapfs) {
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) == NATIVE_FLAG) {
- fprintf(stderr, _("%s: Filesystem byte order "
- "already normalized.\n"), ctx->device_name);
- bb_error_msg_and_die(0);
- }
- }
- if (swapfs) {
- swap_filesys(ctx);
- if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
- bb_error_msg_and_die(0);
- }
-#endif
-
- /*
- * Mark the system as valid, 'til proven otherwise
- */
- ext2fs_mark_valid(fs);
-
- retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
- if (retval) {
- bb_error_msg(_("while reading bad blocks inode"));
- preenhalt(ctx);
- printf(_("This doesn't bode well,"
- " but we'll try to go on...\n"));
- }
-
- run_result = e2fsck_run(ctx);
- e2fsck_clear_progbar(ctx);
- if (run_result == E2F_FLAG_RESTART) {
- printf(_("Restarting e2fsck from the beginning...\n"));
- retval = e2fsck_reset_context(ctx);
- if (retval) {
- bb_error_msg(_("while resetting context"));
- bb_error_msg_and_die(0);
- }
- ext2fs_close(fs);
- goto restart;
- }
- if (run_result & E2F_FLAG_CANCEL) {
- printf(_("%s: e2fsck canceled.\n"), ctx->device_name ?
- ctx->device_name : ctx->filesystem_name);
- exit_value |= FSCK_CANCELED;
- }
- if (run_result & E2F_FLAG_ABORT)
- bb_error_msg_and_die(_("aborted"));
-
- /* Cleanup */
- if (ext2fs_test_changed(fs)) {
- exit_value |= EXIT_NONDESTRUCT;
- if (!(ctx->options & E2F_OPT_PREEN))
- printf(_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
- ctx->device_name);
- if (ctx->mount_flags & EXT2_MF_ISROOT) {
- printf(_("%s: ***** REBOOT LINUX *****\n"),
- ctx->device_name);
- exit_value |= EXIT_DESTRUCT;
- }
- }
- if (!ext2fs_test_valid(fs)) {
- printf(_("\n%s: ********** WARNING: Filesystem still has "
- "errors **********\n\n"), ctx->device_name);
- exit_value |= EXIT_UNCORRECTED;
- exit_value &= ~EXIT_NONDESTRUCT;
- }
- if (exit_value & FSCK_CANCELED)
- exit_value &= ~EXIT_NONDESTRUCT;
- else {
- show_stats(ctx);
- if (!(ctx->options & E2F_OPT_READONLY)) {
- if (ext2fs_test_valid(fs)) {
- if (!(sb->s_state & EXT2_VALID_FS))
- exit_value |= EXIT_NONDESTRUCT;
- sb->s_state = EXT2_VALID_FS;
- } else
- sb->s_state &= ~EXT2_VALID_FS;
- sb->s_mnt_count = 0;
- sb->s_lastcheck = time(NULL);
- ext2fs_mark_super_dirty(fs);
- }
- }
-
- e2fsck_write_bitmaps(ctx);
-
- ext2fs_close(fs);
- ctx->fs = NULL;
- free(ctx->filesystem_name);
- free(ctx->journal_name);
- e2fsck_free_context(ctx);
-
- return exit_value;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-#include <sys/types.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <time.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <setjmp.h>
-#include <errno.h>
-#include <getopt.h>
-#include <limits.h>
-#include <stddef.h>
-#include <assert.h>
-#include <signal.h>
-#include <sys/stat.h>
-#include <sys/resource.h>
-#include <sys/param.h>
-#include <sys/mount.h>
-#include <sys/ioctl.h>
-#include <termios.h>
-#include <mntent.h>
-#include <dirent.h>
-#include "ext2fs/kernel-list.h"
-#include <sys/types.h>
-#include <linux/types.h>
-
-/*
- * Now pull in the real linux/jfs.h definitions.
- */
-#include "ext2fs/kernel-jbd.h"
-
-
-
-#include "fsck.h"
-
-#include "ext2fs/ext2_fs.h"
-#include "blkid/blkid.h"
-#include "ext2fs/ext2_ext_attr.h"
-#include "uuid/uuid.h"
-#include "busybox.h"
-
-#ifdef HAVE_CONIO_H
-#undef HAVE_TERMIOS_H
-#include <conio.h>
-#define read_a_char() getch()
-#else
-#ifdef HAVE_TERMIOS_H
-#include <termios.h>
-#endif
-#endif
-
-
-/*
- * The last ext2fs revision level that this version of e2fsck is able to
- * support
- */
-#define E2FSCK_CURRENT_REV 1
-
-/* Used by the region allocation code */
-typedef __u32 region_addr_t;
-typedef struct region_struct *region_t;
-
-struct dx_dirblock_info {
- int type;
- blk_t phys;
- int flags;
- blk_t parent;
- ext2_dirhash_t min_hash;
- ext2_dirhash_t max_hash;
- ext2_dirhash_t node_min_hash;
- ext2_dirhash_t node_max_hash;
-};
-
-/*
-These defines are used in the type field of dx_dirblock_info
-*/
-
-#define DX_DIRBLOCK_ROOT 1
-#define DX_DIRBLOCK_LEAF 2
-#define DX_DIRBLOCK_NODE 3
-
-
-/*
-The following defines are used in the 'flags' field of a dx_dirblock_info
-*/
-#define DX_FLAG_REFERENCED 1
-#define DX_FLAG_DUP_REF 2
-#define DX_FLAG_FIRST 4
-#define DX_FLAG_LAST 8
-
-/*
- * E2fsck options
- */
-#define E2F_OPT_READONLY 0x0001
-#define E2F_OPT_PREEN 0x0002
-#define E2F_OPT_YES 0x0004
-#define E2F_OPT_NO 0x0008
-#define E2F_OPT_TIME 0x0010
-#define E2F_OPT_CHECKBLOCKS 0x0040
-#define E2F_OPT_DEBUG 0x0080
-#define E2F_OPT_FORCE 0x0100
-#define E2F_OPT_WRITECHECK 0x0200
-#define E2F_OPT_COMPRESS_DIRS 0x0400
-
-/*
- * E2fsck flags
- */
-#define E2F_FLAG_ABORT 0x0001 /* Abort signaled */
-#define E2F_FLAG_CANCEL 0x0002 /* Cancel signaled */
-#define E2F_FLAG_SIGNAL_MASK 0x0003
-#define E2F_FLAG_RESTART 0x0004 /* Restart signaled */
-
-#define E2F_FLAG_SETJMP_OK 0x0010 /* Setjmp valid for abort */
-
-#define E2F_FLAG_PROG_BAR 0x0020 /* Progress bar on screen */
-#define E2F_FLAG_PROG_SUPPRESS 0x0040 /* Progress suspended */
-#define E2F_FLAG_JOURNAL_INODE 0x0080 /* Create a new ext3 journal inode */
-#define E2F_FLAG_SB_SPECIFIED 0x0100 /* The superblock was explicitly
- * specified by the user */
-#define E2F_FLAG_RESTARTED 0x0200 /* E2fsck has been restarted */
-#define E2F_FLAG_RESIZE_INODE 0x0400 /* Request to recreate resize inode */
-
-
-/*Don't know where these come from*/
-#define READ 0
-#define WRITE 1
-#define cpu_to_be32(n) htonl(n)
-#define be32_to_cpu(n) ntohl(n)
-
-/*
- * We define a set of "latch groups"; these are problems which are
- * handled as a set. The user answers once for a particular latch
- * group.
- */
-#define PR_LATCH_MASK 0x0ff0 /* Latch mask */
-#define PR_LATCH_BLOCK 0x0010 /* Latch for illegal blocks (pass 1) */
-#define PR_LATCH_BBLOCK 0x0020 /* Latch for bad block inode blocks (pass 1) */
-#define PR_LATCH_IBITMAP 0x0030 /* Latch for pass 5 inode bitmap proc. */
-#define PR_LATCH_BBITMAP 0x0040 /* Latch for pass 5 inode bitmap proc. */
-#define PR_LATCH_RELOC 0x0050 /* Latch for superblock relocate hint */
-#define PR_LATCH_DBLOCK 0x0060 /* Latch for pass 1b dup block headers */
-#define PR_LATCH_LOW_DTIME 0x0070 /* Latch for pass1 orphaned list refugees */
-#define PR_LATCH_TOOBIG 0x0080 /* Latch for file to big errors */
-#define PR_LATCH_OPTIMIZE_DIR 0x0090 /* Latch for optimize directories */
-
-#define PR_LATCH(x) ((((x) & PR_LATCH_MASK) >> 4) - 1)
-
-/*
- * Latch group descriptor flags
- */
-#define PRL_YES 0x0001 /* Answer yes */
-#define PRL_NO 0x0002 /* Answer no */
-#define PRL_LATCHED 0x0004 /* The latch group is latched */
-#define PRL_SUPPRESS 0x0008 /* Suppress all latch group questions */
-
-#define PRL_VARIABLE 0x000f /* All the flags that need to be reset */
-
-/*
- * Pre-Pass 1 errors
- */
-
-#define PR_0_BB_NOT_GROUP 0x000001 /* Block bitmap not in group */
-#define PR_0_IB_NOT_GROUP 0x000002 /* Inode bitmap not in group */
-#define PR_0_ITABLE_NOT_GROUP 0x000003 /* Inode table not in group */
-#define PR_0_SB_CORRUPT 0x000004 /* Superblock corrupt */
-#define PR_0_FS_SIZE_WRONG 0x000005 /* Filesystem size is wrong */
-#define PR_0_NO_FRAGMENTS 0x000006 /* Fragments not supported */
-#define PR_0_BLOCKS_PER_GROUP 0x000007 /* Bad blocks_per_group */
-#define PR_0_FIRST_DATA_BLOCK 0x000008 /* Bad first_data_block */
-#define PR_0_ADD_UUID 0x000009 /* Adding UUID to filesystem */
-#define PR_0_RELOCATE_HINT 0x00000A /* Relocate hint */
-#define PR_0_MISC_CORRUPT_SUPER 0x00000B /* Miscellaneous superblock corruption */
-#define PR_0_GETSIZE_ERROR 0x00000C /* Error determing physical device size of filesystem */
-#define PR_0_INODE_COUNT_WRONG 0x00000D /* Inode count in the superblock incorrect */
-#define PR_0_HURD_CLEAR_FILETYPE 0x00000E /* The Hurd does not support the filetype feature */
-#define PR_0_JOURNAL_BAD_INODE 0x00000F /* The Hurd does not support the filetype feature */
-#define PR_0_JOURNAL_UNSUPP_MULTIFS 0x000010 /* The external journal has multiple filesystems (which we can't handle yet) */
-#define PR_0_CANT_FIND_JOURNAL 0x000011 /* Can't find external journal */
-#define PR_0_EXT_JOURNAL_BAD_SUPER 0x000012/* External journal has bad superblock */
-#define PR_0_JOURNAL_BAD_UUID 0x000013 /* Superblock has a bad journal UUID */
-#define PR_0_JOURNAL_UNSUPP_SUPER 0x000014 /* Journal has an unknown superblock type */
-#define PR_0_JOURNAL_BAD_SUPER 0x000015 /* Journal superblock is corrupt */
-#define PR_0_JOURNAL_HAS_JOURNAL 0x000016 /* Journal superblock is corrupt */
-#define PR_0_JOURNAL_RECOVER_SET 0x000017 /* Superblock has recovery flag set but no journal */
-#define PR_0_JOURNAL_RECOVERY_CLEAR 0x000018 /* Journal has data, but recovery flag is clear */
-#define PR_0_JOURNAL_RESET_JOURNAL 0x000019 /* Ask if we should clear the journal */
-#define PR_0_FS_REV_LEVEL 0x00001A /* Filesystem revision is 0, but feature flags are set */
-#define PR_0_ORPHAN_CLEAR_INODE 0x000020 /* Clearing orphan inode */
-#define PR_0_ORPHAN_ILLEGAL_BLOCK_NUM 0x000021 /* Illegal block found in orphaned inode */
-#define PR_0_ORPHAN_ALREADY_CLEARED_BLOCK 0x000022 /* Already cleared block found in orphaned inode */
-#define PR_0_ORPHAN_ILLEGAL_HEAD_INODE 0x000023 /* Illegal orphan inode in superblock */
-#define PR_0_ORPHAN_ILLEGAL_INODE 0x000024 /* Illegal inode in orphaned inode list */
-#define PR_0_JOURNAL_UNSUPP_ROCOMPAT 0x000025 /* Journal has unsupported read-only feature - abort */
-#define PR_0_JOURNAL_UNSUPP_INCOMPAT 0x000026 /* Journal has unsupported incompatible feature - abort */
-#define PR_0_JOURNAL_UNSUPP_VERSION 0x000027 /* Journal has unsupported version number */
-#define PR_0_MOVE_JOURNAL 0x000028 /* Moving journal to hidden file */
-#define PR_0_ERR_MOVE_JOURNAL 0x000029 /* Error moving journal */
-#define PR_0_CLEAR_V2_JOURNAL 0x00002A /* Clearing V2 journal superblock */
-#define PR_0_JOURNAL_RUN 0x00002B /* Run journal anyway */
-#define PR_0_JOURNAL_RUN_DEFAULT 0x00002C /* Run journal anyway by default */
-#define PR_0_BACKUP_JNL 0x00002D /* Backup journal inode blocks */
-#define PR_0_NONZERO_RESERVED_GDT_BLOCKS 0x00002E /* Reserved blocks w/o resize_inode */
-#define PR_0_CLEAR_RESIZE_INODE 0x00002F /* Resize_inode not enabled, but resize inode is non-zero */
-#define PR_0_RESIZE_INODE_INVALID 0x000030 /* Resize inode invalid */
-
-/*
- * Pass 1 errors
- */
-
-#define PR_1_PASS_HEADER 0x010000 /* Pass 1: Checking inodes, blocks, and sizes */
-#define PR_1_ROOT_NO_DIR 0x010001 /* Root directory is not an inode */
-#define PR_1_ROOT_DTIME 0x010002 /* Root directory has dtime set */
-#define PR_1_RESERVED_BAD_MODE 0x010003 /* Reserved inode has bad mode */
-#define PR_1_ZERO_DTIME 0x010004 /* Deleted inode has zero dtime */
-#define PR_1_SET_DTIME 0x010005 /* Inode in use, but dtime set */
-#define PR_1_ZERO_LENGTH_DIR 0x010006 /* Zero-length directory */
-#define PR_1_BB_CONFLICT 0x010007 /* Block bitmap conflicts with some other fs block */
-#define PR_1_IB_CONFLICT 0x010008 /* Inode bitmap conflicts with some other fs block */
-#define PR_1_ITABLE_CONFLICT 0x010009 /* Inode table conflicts with some other fs block */
-#define PR_1_BB_BAD_BLOCK 0x01000A /* Block bitmap is on a bad block */
-#define PR_1_IB_BAD_BLOCK 0x01000B /* Inode bitmap is on a bad block */
-#define PR_1_BAD_I_SIZE 0x01000C /* Inode has incorrect i_size */
-#define PR_1_BAD_I_BLOCKS 0x01000D /* Inode has incorrect i_blocks */
-#define PR_1_ILLEGAL_BLOCK_NUM 0x01000E /* Illegal block number in inode */
-#define PR_1_BLOCK_OVERLAPS_METADATA 0x01000F /* Block number overlaps fs metadata */
-#define PR_1_INODE_BLOCK_LATCH 0x010010 /* Inode has illegal blocks (latch question) */
-#define PR_1_TOO_MANY_BAD_BLOCKS 0x010011 /* Too many bad blocks in inode */
-#define PR_1_BB_ILLEGAL_BLOCK_NUM 0x010012 /* Illegal block number in bad block inode */
-#define PR_1_INODE_BBLOCK_LATCH 0x010013 /* Bad block inode has illegal blocks (latch question) */
-#define PR_1_DUP_BLOCKS_PREENSTOP 0x010014 /* Duplicate or bad blocks in use! */
-#define PR_1_BBINODE_BAD_METABLOCK 0x010015 /* Bad block used as bad block indirect block */
-#define PR_1_BBINODE_BAD_METABLOCK_PROMPT 0x010016 /* Inconsistency can't be fixed prompt */
-#define PR_1_BAD_PRIMARY_BLOCK 0x010017 /* Bad primary block */
-#define PR_1_BAD_PRIMARY_BLOCK_PROMPT 0x010018 /* Bad primary block prompt */
-#define PR_1_BAD_PRIMARY_SUPERBLOCK 0x010019 /* Bad primary superblock */
-#define PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR 0x01001A /* Bad primary block group descriptors */
-#define PR_1_BAD_SUPERBLOCK 0x01001B /* Bad superblock in group */
-#define PR_1_BAD_GROUP_DESCRIPTORS 0x01001C /* Bad block group descriptors in group */
-#define PR_1_PROGERR_CLAIMED_BLOCK 0x01001D /* Block claimed for no reason */
-#define PR_1_RELOC_BLOCK_ALLOCATE 0x01001E /* Error allocating blocks for relocating metadata */
-#define PR_1_RELOC_MEMORY_ALLOCATE 0x01001F /* Error allocating block buffer during relocation process */
-#define PR_1_RELOC_FROM_TO 0x010020 /* Relocating metadata group information from X to Y */
-#define PR_1_RELOC_TO 0x010021 /* Relocating metatdata group information to X */
-#define PR_1_RELOC_READ_ERR 0x010022 /* Block read error during relocation process */
-#define PR_1_RELOC_WRITE_ERR 0x010023 /* Block write error during relocation process */
-#define PR_1_ALLOCATE_IBITMAP_ERROR 0x010024 /* Error allocating inode bitmap */
-#define PR_1_ALLOCATE_BBITMAP_ERROR 0x010025 /* Error allocating block bitmap */
-#define PR_1_ALLOCATE_ICOUNT 0x010026 /* Error allocating icount structure */
-#define PR_1_ALLOCATE_DBCOUNT 0x010027 /* Error allocating dbcount */
-#define PR_1_ISCAN_ERROR 0x010028 /* Error while scanning inodes */
-#define PR_1_BLOCK_ITERATE 0x010029 /* Error while iterating over blocks */
-#define PR_1_ICOUNT_STORE 0x01002A /* Error while storing inode count information */
-#define PR_1_ADD_DBLOCK 0x01002B /* Error while storing directory block information */
-#define PR_1_READ_INODE 0x01002C /* Error while reading inode (for clearing) */
-#define PR_1_SUPPRESS_MESSAGES 0x01002D /* Suppress messages prompt */
-#define PR_1_SET_IMAGIC 0x01002F /* Imagic flag set on an inode when filesystem doesn't support it */
-#define PR_1_SET_IMMUTABLE 0x010030 /* Immutable flag set on a device or socket inode */
-#define PR_1_COMPR_SET 0x010031 /* Compression flag set on a non-compressed filesystem */
-#define PR_1_SET_NONZSIZE 0x010032 /* Non-zero size on on device, fifo or socket inode */
-#define PR_1_FS_REV_LEVEL 0x010033 /* Filesystem revision is 0, but feature flags are set */
-#define PR_1_JOURNAL_INODE_NOT_CLEAR 0x010034 /* Journal inode not in use, needs clearing */
-#define PR_1_JOURNAL_BAD_MODE 0x010035 /* Journal inode has wrong mode */
-#define PR_1_LOW_DTIME 0x010036 /* Inode that was part of orphan linked list */
-#define PR_1_ORPHAN_LIST_REFUGEES 0x010037 /* Latch question which asks how to deal with low dtime inodes */
-#define PR_1_ALLOCATE_REFCOUNT 0x010038 /* Error allocating refcount structure */
-#define PR_1_READ_EA_BLOCK 0x010039 /* Error reading Extended Attribute block */
-#define PR_1_BAD_EA_BLOCK 0x01003A /* Invalid Extended Attribute block */
-#define PR_1_EXTATTR_READ_ABORT 0x01003B /* Error reading Extended Attribute block while fixing refcount -- abort */
-#define PR_1_EXTATTR_REFCOUNT 0x01003C /* Extended attribute reference count incorrect */
-#define PR_1_EXTATTR_WRITE 0x01003D /* Error writing Extended Attribute block while fixing refcount */
-#define PR_1_EA_MULTI_BLOCK 0x01003E /* Multiple EA blocks not supported */
-#define PR_1_EA_ALLOC_REGION 0x01003F /* Error allocating EA region allocation structure */
-#define PR_1_EA_ALLOC_COLLISION 0x010040 /* Error EA allocation collision */
-#define PR_1_EA_BAD_NAME 0x010041 /* Bad extended attribute name */
-#define PR_1_EA_BAD_VALUE 0x010042 /* Bad extended attribute value */
-#define PR_1_INODE_TOOBIG 0x010043 /* Inode too big (latch question) */
-#define PR_1_TOOBIG_DIR 0x010044 /* Directory too big */
-#define PR_1_TOOBIG_REG 0x010045 /* Regular file too big */
-#define PR_1_TOOBIG_SYMLINK 0x010046 /* Symlink too big */
-#define PR_1_HTREE_SET 0x010047 /* INDEX_FL flag set on a non-HTREE filesystem */
-#define PR_1_HTREE_NODIR 0x010048 /* INDEX_FL flag set on a non-directory */
-#define PR_1_HTREE_BADROOT 0x010049 /* Invalid root node in HTREE directory */
-#define PR_1_HTREE_HASHV 0x01004A /* Unsupported hash version in HTREE directory */
-#define PR_1_HTREE_INCOMPAT 0x01004B /* Incompatible flag in HTREE root node */
-#define PR_1_HTREE_DEPTH 0x01004C /* HTREE too deep */
-#define PR_1_BB_FS_BLOCK 0x01004D /* Bad block has indirect block that conflicts with filesystem block */
-#define PR_1_RESIZE_INODE_CREATE 0x01004E /* Resize inode failed */
-#define PR_1_EXTRA_ISIZE 0x01004F /* inode->i_size is too long */
-#define PR_1_ATTR_NAME_LEN 0x010050 /* attribute name is too long */
-#define PR_1_ATTR_VALUE_OFFSET 0x010051 /* wrong EA value offset */
-#define PR_1_ATTR_VALUE_BLOCK 0x010052 /* wrong EA blocknumber */
-#define PR_1_ATTR_VALUE_SIZE 0x010053 /* wrong EA value size */
-#define PR_1_ATTR_HASH 0x010054 /* wrong EA hash value */
-
-/*
- * Pass 1b errors
- */
-
-#define PR_1B_PASS_HEADER 0x011000 /* Pass 1B: Rescan for duplicate/bad blocks */
-#define PR_1B_DUP_BLOCK_HEADER 0x011001 /* Duplicate/bad block(s) header */
-#define PR_1B_DUP_BLOCK 0x011002 /* Duplicate/bad block(s) in inode */
-#define PR_1B_DUP_BLOCK_END 0x011003 /* Duplicate/bad block(s) end */
-#define PR_1B_ISCAN_ERROR 0x011004 /* Error while scanning inodes */
-#define PR_1B_ALLOCATE_IBITMAP_ERROR 0x011005 /* Error allocating inode bitmap */
-#define PR_1B_BLOCK_ITERATE 0x0110006 /* Error while iterating over blocks */
-#define PR_1B_ADJ_EA_REFCOUNT 0x0110007 /* Error adjusting EA refcount */
-#define PR_1C_PASS_HEADER 0x012000 /* Pass 1C: Scan directories for inodes with dup blocks. */
-#define PR_1D_PASS_HEADER 0x013000 /* Pass 1D: Reconciling duplicate blocks */
-#define PR_1D_DUP_FILE 0x013001 /* File has duplicate blocks */
-#define PR_1D_DUP_FILE_LIST 0x013002 /* List of files sharing duplicate blocks */
-#define PR_1D_SHARE_METADATA 0x013003 /* File sharing blocks with filesystem metadata */
-#define PR_1D_NUM_DUP_INODES 0x013004 /* Report of how many duplicate/bad inodes */
-#define PR_1D_DUP_BLOCKS_DEALT 0x013005 /* Duplicated blocks already reassigned or cloned. */
-#define PR_1D_CLONE_QUESTION 0x013006 /* Clone duplicate/bad blocks? */
-#define PR_1D_DELETE_QUESTION 0x013007 /* Delete file? */
-#define PR_1D_CLONE_ERROR 0x013008 /* Couldn't clone file (error) */
-
-/*
- * Pass 2 errors
- */
-
-#define PR_2_PASS_HEADER 0x020000 /* Pass 2: Checking directory structure */
-#define PR_2_BAD_INODE_DOT 0x020001 /* Bad inode number for '.' */
-#define PR_2_BAD_INO 0x020002 /* Directory entry has bad inode number */
-#define PR_2_UNUSED_INODE 0x020003 /* Directory entry has deleted or unused inode */
-#define PR_2_LINK_DOT 0x020004 /* Directry entry is link to '.' */
-#define PR_2_BB_INODE 0x020005 /* Directory entry points to inode now located in a bad block */
-#define PR_2_LINK_DIR 0x020006 /* Directory entry contains a link to a directory */
-#define PR_2_LINK_ROOT 0x020007 /* Directory entry contains a link to the root directry */
-#define PR_2_BAD_NAME 0x020008 /* Directory entry has illegal characters in its name */
-#define PR_2_MISSING_DOT 0x020009 /* Missing '.' in directory inode */
-#define PR_2_MISSING_DOT_DOT 0x02000A /* Missing '..' in directory inode */
-#define PR_2_1ST_NOT_DOT 0x02000B /* First entry in directory inode doesn't contain '.' */
-#define PR_2_2ND_NOT_DOT_DOT 0x02000C /* Second entry in directory inode doesn't contain '..' */
-#define PR_2_FADDR_ZERO 0x02000D /* i_faddr should be zero */
-#define PR_2_FILE_ACL_ZERO 0x02000E /* i_file_acl should be zero */
-#define PR_2_DIR_ACL_ZERO 0x02000F /* i_dir_acl should be zero */
-#define PR_2_FRAG_ZERO 0x020010 /* i_frag should be zero */
-#define PR_2_FSIZE_ZERO 0x020011 /* i_fsize should be zero */
-#define PR_2_BAD_MODE 0x020012 /* inode has bad mode */
-#define PR_2_DIR_CORRUPTED 0x020013 /* directory corrupted */
-#define PR_2_FILENAME_LONG 0x020014 /* filename too long */
-#define PR_2_DIRECTORY_HOLE 0x020015 /* Directory inode has a missing block (hole) */
-#define PR_2_DOT_NULL_TERM 0x020016 /* '.' is not NULL terminated */
-#define PR_2_DOT_DOT_NULL_TERM 0x020017 /* '..' is not NULL terminated */
-#define PR_2_BAD_CHAR_DEV 0x020018 /* Illegal character device in inode */
-#define PR_2_BAD_BLOCK_DEV 0x020019 /* Illegal block device in inode */
-#define PR_2_DUP_DOT 0x02001A /* Duplicate '.' entry */
-#define PR_2_DUP_DOT_DOT 0x02001B /* Duplicate '..' entry */
-#define PR_2_NO_DIRINFO 0x02001C /* Internal error: couldn't find dir_info */
-#define PR_2_FINAL_RECLEN 0x02001D /* Final rec_len is wrong */
-#define PR_2_ALLOCATE_ICOUNT 0x02001E /* Error allocating icount structure */
-#define PR_2_DBLIST_ITERATE 0x02001F /* Error iterating over directory blocks */
-#define PR_2_READ_DIRBLOCK 0x020020 /* Error reading directory block */
-#define PR_2_WRITE_DIRBLOCK 0x020021 /* Error writing directory block */
-#define PR_2_ALLOC_DIRBOCK 0x020022 /* Error allocating new directory block */
-#define PR_2_DEALLOC_INODE 0x020023 /* Error deallocating inode */
-#define PR_2_SPLIT_DOT 0x020024 /* Directory entry for '.' is big. Split? */
-#define PR_2_BAD_FIFO 0x020025 /* Illegal FIFO */
-#define PR_2_BAD_SOCKET 0x020026 /* Illegal socket */
-#define PR_2_SET_FILETYPE 0x020027 /* Directory filetype not set */
-#define PR_2_BAD_FILETYPE 0x020028 /* Directory filetype incorrect */
-#define PR_2_CLEAR_FILETYPE 0x020029 /* Directory filetype set when it shouldn't be */
-#define PR_2_NULL_NAME 0x020030 /* Directory filename can't be zero-length */
-#define PR_2_INVALID_SYMLINK 0x020031 /* Invalid symlink */
-#define PR_2_FILE_ACL_BAD 0x020032 /* i_file_acl (extended attribute) is bad */
-#define PR_2_FEATURE_LARGE_FILES 0x020033 /* Filesystem contains large files, but has no such flag in sb */
-#define PR_2_HTREE_NOTREF 0x020034 /* Node in HTREE directory not referenced */
-#define PR_2_HTREE_DUPREF 0x020035 /* Node in HTREE directory referenced twice */
-#define PR_2_HTREE_MIN_HASH 0x020036 /* Node in HTREE directory has bad min hash */
-#define PR_2_HTREE_MAX_HASH 0x020037 /* Node in HTREE directory has bad max hash */
-#define PR_2_HTREE_CLEAR 0x020038 /* Clear invalid HTREE directory */
-#define PR_2_HTREE_BADBLK 0x02003A /* Bad block in htree interior node */
-#define PR_2_ADJ_EA_REFCOUNT 0x02003B /* Error adjusting EA refcount */
-#define PR_2_HTREE_BAD_ROOT 0x02003C /* Invalid HTREE root node */
-#define PR_2_HTREE_BAD_LIMIT 0x02003D /* Invalid HTREE limit */
-#define PR_2_HTREE_BAD_COUNT 0x02003E /* Invalid HTREE count */
-#define PR_2_HTREE_HASH_ORDER 0x02003F /* HTREE interior node has out-of-order hashes in table */
-#define PR_2_HTREE_BAD_DEPTH 0x020040 /* Node in HTREE directory has bad depth */
-#define PR_2_DUPLICATE_DIRENT 0x020041 /* Duplicate directory entry found */
-#define PR_2_NON_UNIQUE_FILE 0x020042 /* Non-unique filename found */
-#define PR_2_REPORT_DUP_DIRENT 0x020043 /* Duplicate directory entry found */
-
-/*
- * Pass 3 errors
- */
-
-#define PR_3_PASS_HEADER 0x030000 /* Pass 3: Checking directory connectivity */
-#define PR_3_NO_ROOT_INODE 0x030001 /* Root inode not allocated */
-#define PR_3_EXPAND_LF_DIR 0x030002 /* No room in lost+found */
-#define PR_3_UNCONNECTED_DIR 0x030003 /* Unconnected directory inode */
-#define PR_3_NO_LF_DIR 0x030004 /* /lost+found not found */
-#define PR_3_BAD_DOT_DOT 0x030005 /* .. entry is incorrect */
-#define PR_3_NO_LPF 0x030006 /* Bad or non-existent /lost+found. Cannot reconnect */
-#define PR_3_CANT_EXPAND_LPF 0x030007 /* Could not expand /lost+found */
-#define PR_3_CANT_RECONNECT 0x030008 /* Could not reconnect inode */
-#define PR_3_ERR_FIND_LPF 0x030009 /* Error while trying to find /lost+found */
-#define PR_3_ERR_LPF_NEW_BLOCK 0x03000A /* Error in ext2fs_new_block while creating /lost+found */
-#define PR_3_ERR_LPF_NEW_INODE 0x03000B /* Error in ext2fs_new_inode while creating /lost+found */
-#define PR_3_ERR_LPF_NEW_DIR_BLOCK 0x03000C /* Error in ext2fs_new_dir_block while creating /lost+found */
-#define PR_3_ERR_LPF_WRITE_BLOCK 0x03000D /* Error while writing directory block for /lost+found */
-#define PR_3_ADJUST_INODE 0x03000E /* Error while adjusting inode count */
-#define PR_3_FIX_PARENT_ERR 0x03000F /* Couldn't fix parent directory -- error */
-#define PR_3_FIX_PARENT_NOFIND 0x030010 /* Couldn't fix parent directory -- couldn't find it */
-#define PR_3_ALLOCATE_IBITMAP_ERROR 0x030011 /* Error allocating inode bitmap */
-#define PR_3_CREATE_ROOT_ERROR 0x030012 /* Error creating root directory */
-#define PR_3_CREATE_LPF_ERROR 0x030013 /* Error creating lost and found directory */
-#define PR_3_ROOT_NOT_DIR_ABORT 0x030014 /* Root inode is not directory; aborting */
-#define PR_3_NO_ROOT_INODE_ABORT 0x030015 /* Cannot proceed without a root inode. */
-#define PR_3_NO_DIRINFO 0x030016 /* Internal error: couldn't find dir_info */
-#define PR_3_LPF_NOTDIR 0x030017 /* Lost+found is not a directory */
-
-/*
- * Pass 3a --- rehashing diretories
- */
-#define PR_3A_PASS_HEADER 0x031000 /* Pass 3a: Reindexing directories */
-#define PR_3A_OPTIMIZE_ITER 0x031001 /* Error iterating over directories */
-#define PR_3A_OPTIMIZE_DIR_ERR 0x031002 /* Error rehash directory */
-#define PR_3A_OPTIMIZE_DIR_HEADER 0x031003 /* Rehashing dir header */
-#define PR_3A_OPTIMIZE_DIR 0x031004 /* Rehashing directory %d */
-#define PR_3A_OPTIMIZE_DIR_END 0x031005 /* Rehashing dir end */
-
-/*
- * Pass 4 errors
- */
-
-#define PR_4_PASS_HEADER 0x040000 /* Pass 4: Checking reference counts */
-#define PR_4_ZERO_LEN_INODE 0x040001 /* Unattached zero-length inode */
-#define PR_4_UNATTACHED_INODE 0x040002 /* Unattached inode */
-#define PR_4_BAD_REF_COUNT 0x040003 /* Inode ref count wrong */
-#define PR_4_INCONSISTENT_COUNT 0x040004 /* Inconsistent inode count information cached */
-
-/*
- * Pass 5 errors
- */
-
-#define PR_5_PASS_HEADER 0x050000 /* Pass 5: Checking group summary information */
-#define PR_5_INODE_BMAP_PADDING 0x050001 /* Padding at end of inode bitmap is not set. */
-#define PR_5_BLOCK_BMAP_PADDING 0x050002 /* Padding at end of block bitmap is not set. */
-#define PR_5_BLOCK_BITMAP_HEADER 0x050003 /* Block bitmap differences header */
-#define PR_5_BLOCK_UNUSED 0x050004 /* Block not used, but marked in bitmap */
-#define PR_5_BLOCK_USED 0x050005 /* Block used, but not marked used in bitmap */
-#define PR_5_BLOCK_BITMAP_END 0x050006 /* Block bitmap differences end */
-#define PR_5_INODE_BITMAP_HEADER 0x050007 /* Inode bitmap differences header */
-#define PR_5_INODE_UNUSED 0x050008 /* Inode not used, but marked in bitmap */
-#define PR_5_INODE_USED 0x050009 /* Inode used, but not marked used in bitmap */
-#define PR_5_INODE_BITMAP_END 0x05000A /* Inode bitmap differences end */
-#define PR_5_FREE_INODE_COUNT_GROUP 0x05000B /* Free inodes count for group wrong */
-#define PR_5_FREE_DIR_COUNT_GROUP 0x05000C /* Directories count for group wrong */
-#define PR_5_FREE_INODE_COUNT 0x05000D /* Free inodes count wrong */
-#define PR_5_FREE_BLOCK_COUNT_GROUP 0x05000E /* Free blocks count for group wrong */
-#define PR_5_FREE_BLOCK_COUNT 0x05000F /* Free blocks count wrong */
-#define PR_5_BMAP_ENDPOINTS 0x050010 /* Programming error: bitmap endpoints don't match */
-#define PR_5_FUDGE_BITMAP_ERROR 0x050011 /* Internal error: fudging end of bitmap */
-#define PR_5_COPY_IBITMAP_ERROR 0x050012 /* Error copying in replacement inode bitmap */
-#define PR_5_COPY_BBITMAP_ERROR 0x050013 /* Error copying in replacement block bitmap */
-#define PR_5_BLOCK_RANGE_UNUSED 0x050014 /* Block range not used, but marked in bitmap */
-#define PR_5_BLOCK_RANGE_USED 0x050015 /* Block range used, but not marked used in bitmap */
-#define PR_5_INODE_RANGE_UNUSED 0x050016 /* Inode range not used, but marked in bitmap */
-#define PR_5_INODE_RANGE_USED 0x050017 /* Inode rangeused, but not marked used in bitmap */
-
-
-/*
- * The directory information structure; stores directory information
- * collected in earlier passes, to avoid disk i/o in fetching the
- * directory information.
- */
-struct dir_info {
- ext2_ino_t ino; /* Inode number */
- ext2_ino_t dotdot; /* Parent according to '..' */
- ext2_ino_t parent; /* Parent according to treewalk */
-};
-
-
-
-/*
- * The indexed directory information structure; stores information for
- * directories which contain a hash tree index.
- */
-struct dx_dir_info {
- ext2_ino_t ino; /* Inode number */
- int numblocks; /* number of blocks */
- int hashversion;
- short depth; /* depth of tree */
- struct dx_dirblock_info *dx_block; /* Array of size numblocks */
-};
-
-/*
- * Define the extended attribute refcount structure
- */
-typedef struct ea_refcount *ext2_refcount_t;
-
-struct e2fsck_struct {
- ext2_filsys fs;
- const char *program_name;
- char *filesystem_name;
- char *device_name;
- char *io_options;
- int flags; /* E2fsck internal flags */
- int options;
- blk_t use_superblock; /* sb requested by user */
- blk_t superblock; /* sb used to open fs */
- int blocksize; /* blocksize */
- blk_t num_blocks; /* Total number of blocks */
- int mount_flags;
- blkid_cache blkid; /* blkid cache */
-
- jmp_buf abort_loc;
-
- unsigned long abort_code;
-
- int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
- unsigned long max);
-
- ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
- ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
- ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
- ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
- ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
-
- ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
- ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
- ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */
-
- /*
- * Inode count arrays
- */
- ext2_icount_t inode_count;
- ext2_icount_t inode_link_info;
-
- ext2_refcount_t refcount;
- ext2_refcount_t refcount_extra;
-
- /*
- * Array of flags indicating whether an inode bitmap, block
- * bitmap, or inode table is invalid
- */
- int *invalid_inode_bitmap_flag;
- int *invalid_block_bitmap_flag;
- int *invalid_inode_table_flag;
- int invalid_bitmaps; /* There are invalid bitmaps/itable */
-
- /*
- * Block buffer
- */
- char *block_buf;
-
- /*
- * For pass1_check_directory and pass1_get_blocks
- */
- ext2_ino_t stashed_ino;
- struct ext2_inode *stashed_inode;
-
- /*
- * Location of the lost and found directory
- */
- ext2_ino_t lost_and_found;
- int bad_lost_and_found;
-
- /*
- * Directory information
- */
- int dir_info_count;
- int dir_info_size;
- struct dir_info *dir_info;
-
- /*
- * Indexed directory information
- */
- int dx_dir_info_count;
- int dx_dir_info_size;
- struct dx_dir_info *dx_dir_info;
-
- /*
- * Directories to hash
- */
- ext2_u32_list dirs_to_hash;
-
- /*
- * Tuning parameters
- */
- int process_inode_size;
- int inode_buffer_blocks;
-
- /*
- * ext3 journal support
- */
- io_channel journal_io;
- char *journal_name;
-
- /*
- * How we display the progress update (for unix)
- */
- int progress_fd;
- int progress_pos;
- int progress_last_percent;
- unsigned int progress_last_time;
- int interactive; /* Are we connected directly to a tty? */
- char start_meta[2], stop_meta[2];
-
- /* File counts */
- int fs_directory_count;
- int fs_regular_count;
- int fs_blockdev_count;
- int fs_chardev_count;
- int fs_links_count;
- int fs_symlinks_count;
- int fs_fast_symlinks_count;
- int fs_fifo_count;
- int fs_total_count;
- int fs_sockets_count;
- int fs_ind_count;
- int fs_dind_count;
- int fs_tind_count;
- int fs_fragmented;
- int large_files;
- int fs_ext_attr_inodes;
- int fs_ext_attr_blocks;
-
- int ext_attr_ver;
-
- /*
- * For the use of callers of the e2fsck functions; not used by
- * e2fsck functions themselves.
- */
- void *priv_data;
-};
-
-
-#define tid_gt(x, y) ((x - y) > 0)
-
-static inline int tid_geq(tid_t x, tid_t y)
-{
- int difference = (x - y);
- return (difference >= 0);
-}
-
-
+++ /dev/null
-# Makefile for busybox
-#
-# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
-#
-# Licensed under the GPL v2, see the file LICENSE in this tarball.
-
-NEEDED-$(CONFIG_CHATTR) = y
-NEEDED-$(CONFIG_LSATTR) = y
-NEEDED-$(CONFIG_MKE2FS) = y
-NEEDED-$(CONFIG_TUNE2FS) = y
-
-lib-y:=
-lib-$(NEEDED-y) += fgetsetflags.o fgetsetversion.o pf.o iod.o mntopts.o \
- feature.o ls.o uuid.o pe.o ostype.o ps.o hashstr.o \
- parse_num.o
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-#include "busybox.h"
-#include <sys/types.h> /* Needed by dirent.h on netbsd */
-#include <stdio.h>
-#include <dirent.h>
-
-#include "../ext2fs/ext2_fs.h"
-
-#define E2P_FEATURE_COMPAT 0
-#define E2P_FEATURE_INCOMPAT 1
-#define E2P_FEATURE_RO_INCOMPAT 2
-#ifndef EXT3_FEATURE_INCOMPAT_EXTENTS
-#define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040
-#endif
-
-/* `options' for print_flags() */
-
-#define PFOPT_LONG 1 /* Must be 1 for compatibility with `int long_format'. */
-
-/*int fgetversion (const char * name, unsigned long * version);*/
-/*int fsetversion (const char * name, unsigned long version);*/
-int fgetsetversion(const char * name, unsigned long * get_version, unsigned long set_version);
-#define fgetversion(name, version) fgetsetversion(name, version, 0)
-#define fsetversion(name, version) fgetsetversion(name, NULL, version)
-
-/*int fgetflags (const char * name, unsigned long * flags);*/
-/*int fsetflags (const char * name, unsigned long flags);*/
-int fgetsetflags(const char * name, unsigned long * get_flags, unsigned long set_flags);
-#define fgetflags(name, flags) fgetsetflags(name, flags, 0)
-#define fsetflags(name, flags) fgetsetflags(name, NULL, flags)
-
-int getflags (int fd, unsigned long * flags);
-int getversion (int fd, unsigned long * version);
-int iterate_on_dir (const char * dir_name,
- int (*func) (const char *, struct dirent *, void *),
- void * private);
-/*void list_super(struct ext2_super_block * s);*/
-void list_super2(struct ext2_super_block * s, FILE *f);
-#define list_super(s) list_super2(s, stdout)
-void print_fs_errors (FILE * f, unsigned short errors);
-void print_flags (FILE * f, unsigned long flags, unsigned options);
-void print_fs_state (FILE * f, unsigned short state);
-int setflags (int fd, unsigned long flags);
-int setversion (int fd, unsigned long version);
-
-const char *e2p_feature2string(int compat, unsigned int mask);
-int e2p_string2feature(char *string, int *compat, unsigned int *mask);
-int e2p_edit_feature(const char *str, __u32 *compat_array, __u32 *ok_array);
-
-int e2p_is_null_uuid(void *uu);
-void e2p_uuid_to_str(void *uu, char *out);
-const char *e2p_uuid2str(void *uu);
-
-const char *e2p_hash2string(int num);
-int e2p_string2hash(char *string);
-
-const char *e2p_mntopt2string(unsigned int mask);
-int e2p_string2mntopt(char *string, unsigned int *mask);
-int e2p_edit_mntopts(const char *str, __u32 *mntopts, __u32 ok);
-
-unsigned long parse_num_blocks(const char *arg, int log_block_size);
-
-char *e2p_os2string(int os_type);
-int e2p_string2os(char *str);
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * feature.c --- convert between features and strings
- *
- * Copyright (C) 1999 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "e2p.h"
-
-struct feature {
- int compat;
- unsigned int mask;
- const char *string;
-};
-
-static const struct feature feature_list[] = {
- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_PREALLOC,
- "dir_prealloc" },
- { E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL,
- "has_journal" },
- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_IMAGIC_INODES,
- "imagic_inodes" },
- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_EXT_ATTR,
- "ext_attr" },
- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX,
- "dir_index" },
- { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_RESIZE_INODE,
- "resize_inode" },
- { E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER,
- "sparse_super" },
- { E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_LARGE_FILE,
- "large_file" },
- { E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_COMPRESSION,
- "compression" },
- { E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_FILETYPE,
- "filetype" },
- { E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_RECOVER,
- "needs_recovery" },
- { E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_JOURNAL_DEV,
- "journal_dev" },
- { E2P_FEATURE_INCOMPAT, EXT3_FEATURE_INCOMPAT_EXTENTS,
- "extents" },
- { E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_META_BG,
- "meta_bg" },
- { 0, 0, 0 },
-};
-
-const char *e2p_feature2string(int compat, unsigned int mask)
-{
- const struct feature *f;
- static char buf[20];
- char fchar;
- int fnum;
-
- for (f = feature_list; f->string; f++) {
- if ((compat == f->compat) &&
- (mask == f->mask))
- return f->string;
- }
- switch (compat) {
- case E2P_FEATURE_COMPAT:
- fchar = 'C';
- break;
- case E2P_FEATURE_INCOMPAT:
- fchar = 'I';
- break;
- case E2P_FEATURE_RO_INCOMPAT:
- fchar = 'R';
- break;
- default:
- fchar = '?';
- break;
- }
- for (fnum = 0; mask >>= 1; fnum++);
- sprintf(buf, "FEATURE_%c%d", fchar, fnum);
- return buf;
-}
-
-int e2p_string2feature(char *string, int *compat_type, unsigned int *mask)
-{
- const struct feature *f;
- char *eptr;
- int num;
-
- for (f = feature_list; f->string; f++) {
- if (!strcasecmp(string, f->string)) {
- *compat_type = f->compat;
- *mask = f->mask;
- return 0;
- }
- }
- if (strncasecmp(string, "FEATURE_", 8))
- return 1;
-
- switch (string[8]) {
- case 'c':
- case 'C':
- *compat_type = E2P_FEATURE_COMPAT;
- break;
- case 'i':
- case 'I':
- *compat_type = E2P_FEATURE_INCOMPAT;
- break;
- case 'r':
- case 'R':
- *compat_type = E2P_FEATURE_RO_INCOMPAT;
- break;
- default:
- return 1;
- }
- if (string[9] == 0)
- return 1;
- num = strtol(string+9, &eptr, 10);
- if (num > 32 || num < 0)
- return 1;
- if (*eptr)
- return 1;
- *mask = 1 << num;
- return 0;
-}
-
-static inline char *skip_over_blanks(char *cp)
-{
- while (*cp && isspace(*cp))
- cp++;
- return cp;
-}
-
-static inline char *skip_over_word(char *cp)
-{
- while (*cp && !isspace(*cp) && *cp != ',')
- cp++;
- return cp;
-}
-
-/*
- * Edit a feature set array as requested by the user. The ok_array,
- * if set, allows the application to limit what features the user is
- * allowed to set or clear using this function.
- */
-int e2p_edit_feature(const char *str, __u32 *compat_array, __u32 *ok_array)
-{
- char *cp, *buf, *next;
- int neg;
- unsigned int mask;
- int compat_type;
-
- buf = xstrdup(str);
- cp = buf;
- while (cp && *cp) {
- neg = 0;
- cp = skip_over_blanks(cp);
- next = skip_over_word(cp);
- if (*next == 0)
- next = 0;
- else
- *next = 0;
- switch (*cp) {
- case '-':
- case '^':
- neg++;
- case '+':
- cp++;
- break;
- }
- if (e2p_string2feature(cp, &compat_type, &mask))
- return 1;
- if (ok_array && !(ok_array[compat_type] & mask))
- return 1;
- if (neg)
- compat_array[compat_type] &= ~mask;
- else
- compat_array[compat_type] |= mask;
- cp = next ? next+1 : 0;
- }
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * fgetflags.c - Get a file flags on an ext2 file system
- * fsetflags.c - Set a file flags on an ext2 file system
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-/*
- * History:
- * 93/10/30 - Creation
- */
-
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <sys/types.h>
-#include <sys/stat.h>
-#ifdef HAVE_EXT2_IOCTLS
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#endif
-
-#include "e2p.h"
-
-#ifdef O_LARGEFILE
-#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
-#else
-#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
-#endif
-
-int fgetsetflags (const char * name, unsigned long * get_flags, unsigned long set_flags)
-{
-#ifdef HAVE_EXT2_IOCTLS
- struct stat buf;
- int fd, r, f, save_errno = 0;
-
- if (!stat(name, &buf) &&
- !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
- goto notsupp;
- }
- fd = open (name, OPEN_FLAGS);
- if (fd == -1)
- return -1;
- if (!get_flags) {
- f = (int) set_flags;
- r = ioctl (fd, EXT2_IOC_SETFLAGS, &f);
- } else {
- r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
- *get_flags = f;
- }
- if (r == -1)
- save_errno = errno;
- close (fd);
- if (save_errno)
- errno = save_errno;
- return r;
-notsupp:
-#endif /* HAVE_EXT2_IOCTLS */
- errno = EOPNOTSUPP;
- return -1;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * fgetversion.c - Get a file version on an ext2 file system
- * fsetversion.c - Set a file version on an ext2 file system
- *
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-/*
- * History:
- * 93/10/30 - Creation
- */
-
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <sys/ioctl.h>
-
-#include "e2p.h"
-
-#ifdef O_LARGEFILE
-#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
-#else
-#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
-#endif
-
-/*
- To do fsetversion: unsigned long *ptr_version must be set to NULL.
- and unsigned long version must be set to a value
- To do fgetversion: unsigned long *ptr_version must NOT be set to NULL
- and unsigned long version is ignored.
- TITO.
-*/
-
-int fgetsetversion (const char * name, unsigned long * get_version, unsigned long set_version)
-{
-#ifdef HAVE_EXT2_IOCTLS
- int fd, r, ver, save_errno = 0;
-
- fd = open (name, OPEN_FLAGS);
- if (fd == -1)
- return -1;
- if (!get_version) {
- ver = (int) set_version;
- r = ioctl (fd, EXT2_IOC_SETVERSION, &ver);
- } else {
- r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
- *get_version = ver;
- }
- if (r == -1)
- save_errno = errno;
- close (fd);
- if (save_errno)
- errno = save_errno;
- return r;
-#else /* ! HAVE_EXT2_IOCTLS */
- errno = EOPNOTSUPP;
- return -1;
-#endif /* ! HAVE_EXT2_IOCTLS */
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * feature.c --- convert between features and strings
- *
- * Copyright (C) 1999 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "e2p.h"
-
-struct hash {
- int num;
- const char *string;
-};
-
-static const struct hash hash_list[] = {
- { EXT2_HASH_LEGACY, "legacy" },
- { EXT2_HASH_HALF_MD4, "half_md4" },
- { EXT2_HASH_TEA, "tea" },
- { 0, 0 },
-};
-
-const char *e2p_hash2string(int num)
-{
- const struct hash *p;
- static char buf[20];
-
- for (p = hash_list; p->string; p++) {
- if (num == p->num)
- return p->string;
- }
- sprintf(buf, "HASHALG_%d", num);
- return buf;
-}
-
-/*
- * Returns the hash algorithm, or -1 on error
- */
-int e2p_string2hash(char *string)
-{
- const struct hash *p;
- char *eptr;
- int num;
-
- for (p = hash_list; p->string; p++) {
- if (!strcasecmp(string, p->string)) {
- return p->num;
- }
- }
- if (strncasecmp(string, "HASHALG_", 8))
- return -1;
-
- if (string[8] == 0)
- return -1;
- num = strtol(string+8, &eptr, 10);
- if (num > 255 || num < 0)
- return -1;
- if (*eptr)
- return -1;
- return num;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * iod.c - Iterate a function on each entry of a directory
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-/*
- * History:
- * 93/10/30 - Creation
- */
-
-#include "e2p.h"
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-
-int iterate_on_dir (const char * dir_name,
- int (*func) (const char *, struct dirent *, void *),
- void * private)
-{
- DIR * dir;
- struct dirent *de, *dep;
- int max_len, len;
-
- max_len = PATH_MAX + sizeof(struct dirent);
- de = xmalloc(max_len+1);
- memset(de, 0, max_len+1);
-
- dir = opendir (dir_name);
- if (dir == NULL) {
- free(de);
- return -1;
- }
- while ((dep = readdir (dir))) {
- len = sizeof(struct dirent);
- if (len < dep->d_reclen)
- len = dep->d_reclen;
- if (len > max_len)
- len = max_len;
- memcpy(de, dep, len);
- (*func) (dir_name, de, private);
- }
- free(de);
- closedir(dir);
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ls.c - List the contents of an ext2fs superblock
- *
- * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * Copyright (C) 1995, 1996, 1997 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <string.h>
-#include <grp.h>
-#include <pwd.h>
-#include <time.h>
-
-#include "e2p.h"
-
-static void print_user(unsigned short uid, FILE *f)
-{
- struct passwd *pw = getpwuid(uid);
- fprintf(f, "%u (user %s)\n", uid,
- (pw == NULL ? "unknown" : pw->pw_name));
-}
-
-static void print_group(unsigned short gid, FILE *f)
-{
- struct group *gr = getgrgid(gid);
- fprintf(f, "%u (group %s)\n", gid,
- (gr == NULL ? "unknown" : gr->gr_name));
-}
-
-#define MONTH_INT (86400 * 30)
-#define WEEK_INT (86400 * 7)
-#define DAY_INT (86400)
-#define HOUR_INT (60 * 60)
-#define MINUTE_INT (60)
-
-static const char *interval_string(unsigned int secs)
-{
- static char buf[256], tmp[80];
- int hr, min, num;
-
- buf[0] = 0;
-
- if (secs == 0)
- return "<none>";
-
- if (secs >= MONTH_INT) {
- num = secs / MONTH_INT;
- secs -= num*MONTH_INT;
- sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
- }
- if (secs >= WEEK_INT) {
- num = secs / WEEK_INT;
- secs -= num*WEEK_INT;
- sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
- num, (num>1) ? "s" : "");
- strcat(buf, tmp);
- }
- if (secs >= DAY_INT) {
- num = secs / DAY_INT;
- secs -= num*DAY_INT;
- sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
- num, (num>1) ? "s" : "");
- strcat(buf, tmp);
- }
- if (secs > 0) {
- hr = secs / HOUR_INT;
- secs -= hr*HOUR_INT;
- min = secs / MINUTE_INT;
- secs -= min*MINUTE_INT;
- sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
- hr, min, secs);
- strcat(buf, tmp);
- }
- return buf;
-}
-
-static void print_features(struct ext2_super_block * s, FILE *f)
-{
-#ifdef EXT2_DYNAMIC_REV
- int i, j, printed=0;
- __u32 *mask = &s->s_feature_compat, m;
-
- fprintf(f, "Filesystem features: ");
- for (i=0; i <3; i++,mask++) {
- for (j=0,m=1; j < 32; j++, m<<=1) {
- if (*mask & m) {
- fprintf(f, " %s", e2p_feature2string(i, m));
- printed++;
- }
- }
- }
- if (printed == 0)
- fprintf(f, " (none)");
- fprintf(f, "\n");
-#endif
-}
-
-static void print_mntopts(struct ext2_super_block * s, FILE *f)
-{
-#ifdef EXT2_DYNAMIC_REV
- int i, printed=0;
- __u32 mask = s->s_default_mount_opts, m;
-
- fprintf(f, "Default mount options: ");
- if (mask & EXT3_DEFM_JMODE) {
- fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
- printed++;
- }
- for (i=0,m=1; i < 32; i++, m<<=1) {
- if (m & EXT3_DEFM_JMODE)
- continue;
- if (mask & m) {
- fprintf(f, " %s", e2p_mntopt2string(m));
- printed++;
- }
- }
- if (printed == 0)
- fprintf(f, " (none)");
- fprintf(f, "\n");
-#endif
-}
-
-
-#ifndef EXT2_INODE_SIZE
-#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
-#endif
-
-#ifndef EXT2_GOOD_OLD_REV
-#define EXT2_GOOD_OLD_REV 0
-#endif
-
-void list_super2(struct ext2_super_block * sb, FILE *f)
-{
- int inode_blocks_per_group;
- char buf[80], *str;
- time_t tm;
-
- inode_blocks_per_group = (((sb->s_inodes_per_group *
- EXT2_INODE_SIZE(sb)) +
- EXT2_BLOCK_SIZE(sb) - 1) /
- EXT2_BLOCK_SIZE(sb));
- if (sb->s_volume_name[0]) {
- memset(buf, 0, sizeof(buf));
- strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
- } else
- strcpy(buf, "<none>");
- fprintf(f, "Filesystem volume name: %s\n", buf);
- if (sb->s_last_mounted[0]) {
- memset(buf, 0, sizeof(buf));
- strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
- } else
- strcpy(buf, "<not available>");
- fprintf(f,
- "Last mounted on: %s\n"
- "Filesystem UUID: %s\n"
- "Filesystem magic number: 0x%04X\n"
- "Filesystem revision #: %d",
- buf, e2p_uuid2str(sb->s_uuid), sb->s_magic, sb->s_rev_level);
- if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
- fprintf(f, " (original)\n");
-#ifdef EXT2_DYNAMIC_REV
- } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
- fprintf(f, " (dynamic)\n");
-#endif
- } else
- fprintf(f, " (unknown)\n");
- print_features(sb, f);
- print_mntopts(sb, f);
- fprintf(f, "Filesystem state: ");
- print_fs_state (f, sb->s_state);
- fprintf(f, "\nErrors behavior: ");
- print_fs_errors(f, sb->s_errors);
- str = e2p_os2string(sb->s_creator_os);
- fprintf(f,
- "\n"
- "Filesystem OS type: %s\n"
- "Inode count: %u\n"
- "Block count: %u\n"
- "Reserved block count: %u\n"
- "Free blocks: %u\n"
- "Free inodes: %u\n"
- "First block: %u\n"
- "Block size: %u\n"
- "Fragment size: %u\n",
- str, sb->s_inodes_count, sb->s_blocks_count, sb->s_r_blocks_count,
- sb->s_free_blocks_count, sb->s_free_inodes_count,
- sb->s_first_data_block, EXT2_BLOCK_SIZE(sb), EXT2_FRAG_SIZE(sb));
- free(str);
- if (sb->s_reserved_gdt_blocks)
- fprintf(f, "Reserved GDT blocks: %u\n",
- sb->s_reserved_gdt_blocks);
- fprintf(f,
- "Blocks per group: %u\n"
- "Fragments per group: %u\n"
- "Inodes per group: %u\n"
- "Inode blocks per group: %u\n",
- sb->s_blocks_per_group, sb->s_frags_per_group,
- sb->s_inodes_per_group, inode_blocks_per_group);
- if (sb->s_first_meta_bg)
- fprintf(f, "First meta block group: %u\n",
- sb->s_first_meta_bg);
- if (sb->s_mkfs_time) {
- tm = sb->s_mkfs_time;
- fprintf(f, "Filesystem created: %s", ctime(&tm));
- }
- tm = sb->s_mtime;
- fprintf(f, "Last mount time: %s",
- sb->s_mtime ? ctime(&tm) : "n/a\n");
- tm = sb->s_wtime;
- fprintf(f,
- "Last write time: %s"
- "Mount count: %u\n"
- "Maximum mount count: %d\n",
- ctime(&tm), sb->s_mnt_count, sb->s_max_mnt_count);
- tm = sb->s_lastcheck;
- fprintf(f,
- "Last checked: %s"
- "Check interval: %u (%s)\n",
- ctime(&tm),
- sb->s_checkinterval, interval_string(sb->s_checkinterval));
- if (sb->s_checkinterval)
- {
- time_t next;
-
- next = sb->s_lastcheck + sb->s_checkinterval;
- fprintf(f, "Next check after: %s", ctime(&next));
- }
- fprintf(f, "Reserved blocks uid: ");
- print_user(sb->s_def_resuid, f);
- fprintf(f, "Reserved blocks gid: ");
- print_group(sb->s_def_resgid, f);
- if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
- fprintf(f,
- "First inode: %d\n"
- "Inode size: %d\n",
- sb->s_first_ino, sb->s_inode_size);
- }
- if (!e2p_is_null_uuid(sb->s_journal_uuid))
- fprintf(f, "Journal UUID: %s\n",
- e2p_uuid2str(sb->s_journal_uuid));
- if (sb->s_journal_inum)
- fprintf(f, "Journal inode: %u\n",
- sb->s_journal_inum);
- if (sb->s_journal_dev)
- fprintf(f, "Journal device: 0x%04x\n",
- sb->s_journal_dev);
- if (sb->s_last_orphan)
- fprintf(f, "First orphan inode: %u\n",
- sb->s_last_orphan);
- if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
- sb->s_def_hash_version)
- fprintf(f, "Default directory hash: %s\n",
- e2p_hash2string(sb->s_def_hash_version));
- if (!e2p_is_null_uuid(sb->s_hash_seed))
- fprintf(f, "Directory Hash Seed: %s\n",
- e2p_uuid2str(sb->s_hash_seed));
- if (sb->s_jnl_backup_type) {
- fprintf(f, "Journal backup: ");
- if (sb->s_jnl_backup_type == 1)
- fprintf(f, "inode blocks\n");
- else
- fprintf(f, "type %u\n", sb->s_jnl_backup_type);
- }
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * mountopts.c --- convert between default mount options and strings
- *
- * Copyright (C) 2002 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "e2p.h"
-
-struct mntopt {
- unsigned int mask;
- const char *string;
-};
-
-static const struct mntopt mntopt_list[] = {
- { EXT2_DEFM_DEBUG, "debug" },
- { EXT2_DEFM_BSDGROUPS, "bsdgroups" },
- { EXT2_DEFM_XATTR_USER, "user_xattr" },
- { EXT2_DEFM_ACL, "acl" },
- { EXT2_DEFM_UID16, "uid16" },
- { EXT3_DEFM_JMODE_DATA, "journal_data" },
- { EXT3_DEFM_JMODE_ORDERED, "journal_data_ordered" },
- { EXT3_DEFM_JMODE_WBACK, "journal_data_writeback" },
- { 0, 0 },
-};
-
-const char *e2p_mntopt2string(unsigned int mask)
-{
- const struct mntopt *f;
- static char buf[20];
- int fnum;
-
- for (f = mntopt_list; f->string; f++) {
- if (mask == f->mask)
- return f->string;
- }
- for (fnum = 0; mask >>= 1; fnum++);
- sprintf(buf, "MNTOPT_%d", fnum);
- return buf;
-}
-
-int e2p_string2mntopt(char *string, unsigned int *mask)
-{
- const struct mntopt *f;
- char *eptr;
- int num;
-
- for (f = mntopt_list; f->string; f++) {
- if (!strcasecmp(string, f->string)) {
- *mask = f->mask;
- return 0;
- }
- }
- if (strncasecmp(string, "MNTOPT_", 8))
- return 1;
-
- if (string[8] == 0)
- return 1;
- num = strtol(string+8, &eptr, 10);
- if (num > 32 || num < 0)
- return 1;
- if (*eptr)
- return 1;
- *mask = 1 << num;
- return 0;
-}
-
-static char *skip_over_blanks(char *cp)
-{
- while (*cp && isspace(*cp))
- cp++;
- return cp;
-}
-
-static char *skip_over_word(char *cp)
-{
- while (*cp && !isspace(*cp) && *cp != ',')
- cp++;
- return cp;
-}
-
-/*
- * Edit a mntopt set array as requested by the user. The ok
- * parameter, if non-zero, allows the application to limit what
- * mntopts the user is allowed to set or clear using this function.
- */
-int e2p_edit_mntopts(const char *str, __u32 *mntopts, __u32 ok)
-{
- char *cp, *buf, *next;
- int neg;
- unsigned int mask;
-
- buf = xstrdup(str);
- cp = buf;
- while (cp && *cp) {
- neg = 0;
- cp = skip_over_blanks(cp);
- next = skip_over_word(cp);
- if (*next == 0)
- next = 0;
- else
- *next = 0;
- switch (*cp) {
- case '-':
- case '^':
- neg++;
- case '+':
- cp++;
- break;
- }
- if (e2p_string2mntopt(cp, &mask))
- return 1;
- if (ok && !(ok & mask))
- return 1;
- if (mask & EXT3_DEFM_JMODE)
- *mntopts &= ~EXT3_DEFM_JMODE;
- if (neg)
- *mntopts &= ~mask;
- else
- *mntopts |= mask;
- cp = next ? next+1 : 0;
- }
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * getostype.c - Get the Filesystem OS type
- *
- * Copyright (C) 2004,2005 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-#include "e2p.h"
-#include <string.h>
-#include <stdlib.h>
-
-static const char * const os_tab[] =
- { "Linux",
- "Hurd",
- "Masix",
- "FreeBSD",
- "Lites",
- 0 };
-
-/*
- * Convert an os_type to a string
- */
-char *e2p_os2string(int os_type)
-{
- const char *os;
- char *ret;
-
- if (os_type <= EXT2_OS_LITES)
- os = os_tab[os_type];
- else
- os = "(unknown os)";
-
- ret = xstrdup(os);
- return ret;
-}
-
-/*
- * Convert an os_type to a string
- */
-int e2p_string2os(char *str)
-{
- const char * const *cpp;
- int i = 0;
-
- for (cpp = os_tab; *cpp; cpp++, i++) {
- if (!strcasecmp(str, *cpp))
- return i;
- }
- return -1;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- char *s;
- int i, os;
-
- for (i=0; i <= EXT2_OS_LITES; i++) {
- s = e2p_os2string(i);
- os = e2p_string2os(s);
- printf("%d: %s (%d)\n", i, s, os);
- if (i != os) {
- fprintf(stderr, "Failure!\n");
- exit(1);
- }
- }
- exit(0);
-}
-#endif
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * parse_num.c - Parse the number of blocks
- *
- * Copyright (C) 2004,2005 Theodore Ts'o <tytso@mit.edu>
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-#include "e2p.h"
-
-#include <stdlib.h>
-
-unsigned long parse_num_blocks(const char *arg, int log_block_size)
-{
- char *p;
- unsigned long long num;
-
- num = strtoull(arg, &p, 0);
-
- if (p[0] && p[1])
- return 0;
-
- switch (*p) { /* Using fall-through logic */
- case 'T': case 't':
- num <<= 10;
- case 'G': case 'g':
- num <<= 10;
- case 'M': case 'm':
- num <<= 10;
- case 'K': case 'k':
- num >>= log_block_size;
- break;
- case 's':
- num >>= 1;
- break;
- case '\0':
- break;
- default:
- return 0;
- }
- return num;
-}
-
-#ifdef DEBUG
-#include <unistd.h>
-#include <stdio.h>
-
-main(int argc, char **argv)
-{
- unsigned long num;
- int log_block_size = 0;
-
- if (argc != 2) {
- fprintf(stderr, "Usage: %s arg\n", argv[0]);
- exit(1);
- }
-
- num = parse_num_blocks(argv[1], log_block_size);
-
- printf("Parsed number: %lu\n", num);
- exit(0);
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * pe.c - Print a second extended filesystem errors behavior
- *
- * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-/*
- * History:
- * 94/01/09 - Creation
- */
-
-#include <stdio.h>
-
-#include "e2p.h"
-
-void print_fs_errors(FILE *f, unsigned short errors)
-{
- char *disp = NULL;
- switch (errors) {
- case EXT2_ERRORS_CONTINUE: disp = "Continue"; break;
- case EXT2_ERRORS_RO: disp = "Remount read-only"; break;
- case EXT2_ERRORS_PANIC: disp = "Panic"; break;
- default: disp = "Unknown (continue)";
- }
- fprintf(f, disp);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * pf.c - Print file attributes on an ext2 file system
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-/*
- * History:
- * 93/10/30 - Creation
- */
-
-#include <stdio.h>
-
-#include "e2p.h"
-
-struct flags_name {
- unsigned long flag;
- const char *short_name;
- const char *long_name;
-};
-
-static const struct flags_name flags_array[] = {
- { EXT2_SECRM_FL, "s", "Secure_Deletion" },
- { EXT2_UNRM_FL, "u" , "Undelete" },
- { EXT2_SYNC_FL, "S", "Synchronous_Updates" },
- { EXT2_DIRSYNC_FL, "D", "Synchronous_Directory_Updates" },
- { EXT2_IMMUTABLE_FL, "i", "Immutable" },
- { EXT2_APPEND_FL, "a", "Append_Only" },
- { EXT2_NODUMP_FL, "d", "No_Dump" },
- { EXT2_NOATIME_FL, "A", "No_Atime" },
- { EXT2_COMPR_FL, "c", "Compression_Requested" },
-#ifdef ENABLE_COMPRESSION
- { EXT2_COMPRBLK_FL, "B", "Compressed_File" },
- { EXT2_DIRTY_FL, "Z", "Compressed_Dirty_File" },
- { EXT2_NOCOMPR_FL, "X", "Compression_Raw_Access" },
- { EXT2_ECOMPR_FL, "E", "Compression_Error" },
-#endif
- { EXT3_JOURNAL_DATA_FL, "j", "Journaled_Data" },
- { EXT2_INDEX_FL, "I", "Indexed_direcctory" },
- { EXT2_NOTAIL_FL, "t", "No_Tailmerging" },
- { EXT2_TOPDIR_FL, "T", "Top_of_Directory_Hierarchies" },
- { 0, NULL, NULL }
-};
-
-void print_flags (FILE * f, unsigned long flags, unsigned options)
-{
- int long_opt = (options & PFOPT_LONG);
- const struct flags_name *fp;
- int first = 1;
-
- for (fp = flags_array; fp->flag != 0; fp++) {
- if (flags & fp->flag) {
- if (long_opt) {
- if (first)
- first = 0;
- else
- fputs(", ", f);
- fputs(fp->long_name, f);
- } else
- fputs(fp->short_name, f);
- } else {
- if (!long_opt)
- fputs("-", f);
- }
- }
- if (long_opt && first)
- fputs("---", f);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ps.c - Print filesystem state
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU Library General
- * Public License
- */
-
-/*
- * History:
- * 93/12/22 - Creation
- */
-
-#include <stdio.h>
-
-#include "e2p.h"
-
-void print_fs_state(FILE *f, unsigned short state)
-{
- fprintf(f, (state & EXT2_VALID_FS ? " clean" : " not clean"));
- if (state & EXT2_ERROR_FS)
- fprintf(f, " with errors");
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * uuid.c -- utility routines for manipulating UUID's.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include "../ext2fs/ext2_types.h"
-
-#include "e2p.h"
-
-struct uuid {
- __u32 time_low;
- __u16 time_mid;
- __u16 time_hi_and_version;
- __u16 clock_seq;
- __u8 node[6];
-};
-
-/* Returns 1 if the uuid is the NULL uuid */
-int e2p_is_null_uuid(void *uu)
-{
- __u8 *cp;
- int i;
-
- for (i=0, cp = uu; i < 16; i++)
- if (*cp)
- return 0;
- return 1;
-}
-
-static void e2p_unpack_uuid(void *in, struct uuid *uu)
-{
- __u8 *ptr = in;
- __u32 tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- tmp = (tmp << 8) | *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_low = tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_mid = tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_hi_and_version = tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->clock_seq = tmp;
-
- memcpy(uu->node, ptr, 6);
-}
-
-void e2p_uuid_to_str(void *uu, char *out)
-{
- struct uuid uuid;
-
- e2p_unpack_uuid(uu, &uuid);
- sprintf(out,
- "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
- uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
- uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
- uuid.node[0], uuid.node[1], uuid.node[2],
- uuid.node[3], uuid.node[4], uuid.node[5]);
-}
-
-const char *e2p_uuid2str(void *uu)
-{
- static char buf[80];
- if (e2p_is_null_uuid(uu))
- return "<none>";
- e2p_uuid_to_str(uu, buf);
- return buf;
-}
+++ /dev/null
-# Makefile for busybox
-#
-# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
-#
-# Licensed under the GPL v2, see the file LICENSE in this tarball.
-
-NEEDED-$(CONFIG_E2FSCK) = y
-NEEDED-$(CONFIG_FSCK) = y
-NEEDED-$(CONFIG_MKE2FS) = y
-NEEDED-$(CONFIG_TUNE2FS) = y
-
-lib-y:=
-lib-$(NEEDED-y) += gen_bitmap.o bitops.o ismounted.o mkjournal.o unix_io.o \
- rw_bitmaps.o initialize.o bitmaps.o block.o \
- ind_block.o inode.o freefs.o alloc_stats.o closefs.o \
- openfs.o io_manager.o finddev.o read_bb.o alloc.o badblocks.o \
- getsize.o getsectsize.o alloc_tables.o read_bb_file.o mkdir.o \
- bb_inode.o newdir.o alloc_sb.o lookup.o dirblock.o expanddir.o \
- dir_iterate.o link.o res_gdt.o icount.o get_pathname.o dblist.o \
- dirhash.o version.o flushb.o unlink.o check_desc.o valid_blk.o \
- ext_attr.o bmap.o dblist_dir.o ext2fs_inline.o swapfs.o
-
-CFLAGS += -include $(srctree)/e2fsprogs/e2fsbb.h
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * alloc.c --- allocate new inodes, blocks for ext2fs
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <time.h>
-#include <string.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * Right now, just search forward from the parent directory's block
- * group to find the next free inode.
- *
- * Should have a special policy for directories.
- */
-errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir,
- int mode EXT2FS_ATTR((unused)),
- ext2fs_inode_bitmap map, ext2_ino_t *ret)
-{
- ext2_ino_t dir_group = 0;
- ext2_ino_t i;
- ext2_ino_t start_inode;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!map)
- map = fs->inode_map;
- if (!map)
- return EXT2_ET_NO_INODE_BITMAP;
-
- if (dir > 0)
- dir_group = (dir - 1) / EXT2_INODES_PER_GROUP(fs->super);
-
- start_inode = (dir_group * EXT2_INODES_PER_GROUP(fs->super)) + 1;
- if (start_inode < EXT2_FIRST_INODE(fs->super))
- start_inode = EXT2_FIRST_INODE(fs->super);
- i = start_inode;
-
- do {
- if (!ext2fs_fast_test_inode_bitmap(map, i))
- break;
- i++;
- if (i > fs->super->s_inodes_count)
- i = EXT2_FIRST_INODE(fs->super);
- } while (i != start_inode);
-
- if (ext2fs_test_inode_bitmap(map, i))
- return EXT2_ET_INODE_ALLOC_FAIL;
- *ret = i;
- return 0;
-}
-
-/*
- * Stupid algorithm --- we now just search forward starting from the
- * goal. Should put in a smarter one someday....
- */
-errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
- ext2fs_block_bitmap map, blk_t *ret)
-{
- blk_t i;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!map)
- map = fs->block_map;
- if (!map)
- return EXT2_ET_NO_BLOCK_BITMAP;
- if (!goal || (goal >= fs->super->s_blocks_count))
- goal = fs->super->s_first_data_block;
- i = goal;
- do {
- if (!ext2fs_fast_test_block_bitmap(map, i)) {
- *ret = i;
- return 0;
- }
- i++;
- if (i >= fs->super->s_blocks_count)
- i = fs->super->s_first_data_block;
- } while (i != goal);
- return EXT2_ET_BLOCK_ALLOC_FAIL;
-}
-
-/*
- * This function zeros out the allocated block, and updates all of the
- * appropriate filesystem records.
- */
-errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
- char *block_buf, blk_t *ret)
-{
- errcode_t retval;
- blk_t block;
- char *buf = 0;
-
- if (!block_buf) {
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
- block_buf = buf;
- }
- memset(block_buf, 0, fs->blocksize);
-
- if (!fs->block_map) {
- retval = ext2fs_read_block_bitmap(fs);
- if (retval)
- goto fail;
- }
-
- retval = ext2fs_new_block(fs, goal, 0, &block);
- if (retval)
- goto fail;
-
- retval = io_channel_write_blk(fs->io, block, 1, block_buf);
- if (retval)
- goto fail;
-
- ext2fs_block_alloc_stats(fs, block, +1);
- *ret = block;
- return 0;
-
-fail:
- if (buf)
- ext2fs_free_mem(&buf);
- return retval;
-}
-
-errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
- int num, ext2fs_block_bitmap map, blk_t *ret)
-{
- blk_t b = start;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!map)
- map = fs->block_map;
- if (!map)
- return EXT2_ET_NO_BLOCK_BITMAP;
- if (!b)
- b = fs->super->s_first_data_block;
- if (!finish)
- finish = start;
- if (!num)
- num = 1;
- do {
- if (b+num-1 > fs->super->s_blocks_count)
- b = fs->super->s_first_data_block;
- if (ext2fs_fast_test_block_bitmap_range(map, b, num)) {
- *ret = b;
- return 0;
- }
- b++;
- } while (b != finish);
- return EXT2_ET_BLOCK_ALLOC_FAIL;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * alloc_sb.c --- Allocate the superblock and block group descriptors for a
- * newly initialized filesystem. Used by mke2fs when initializing a filesystem
- *
- * Copyright (C) 1994, 1995, 1996, 2003 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
- dgrp_t group,
- ext2fs_block_bitmap bmap)
-{
- blk_t super_blk, old_desc_blk, new_desc_blk;
- int j, old_desc_blocks, num_blocks;
-
- num_blocks = ext2fs_super_and_bgd_loc(fs, group, &super_blk,
- &old_desc_blk, &new_desc_blk, 0);
-
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
- old_desc_blocks = fs->super->s_first_meta_bg;
- else
- old_desc_blocks =
- fs->desc_blocks + fs->super->s_reserved_gdt_blocks;
-
- if (super_blk || (group == 0))
- ext2fs_mark_block_bitmap(bmap, super_blk);
-
- if (old_desc_blk) {
- for (j=0; j < old_desc_blocks; j++)
- ext2fs_mark_block_bitmap(bmap, old_desc_blk + j);
- }
- if (new_desc_blk)
- ext2fs_mark_block_bitmap(bmap, new_desc_blk);
-
- return num_blocks;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * alloc_stats.c --- Update allocation statistics for ext2fs
- *
- * Copyright (C) 2001 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- */
-
-#include <stdio.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
- int inuse, int isdir)
-{
- int group = ext2fs_group_of_ino(fs, ino);
-
- if (inuse > 0)
- ext2fs_mark_inode_bitmap(fs->inode_map, ino);
- else
- ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
- fs->group_desc[group].bg_free_inodes_count -= inuse;
- if (isdir)
- fs->group_desc[group].bg_used_dirs_count += inuse;
- fs->super->s_free_inodes_count -= inuse;
- ext2fs_mark_super_dirty(fs);
- ext2fs_mark_ib_dirty(fs);
-}
-
-void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse)
-{
- ext2fs_inode_alloc_stats2(fs, ino, inuse, 0);
-}
-
-void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse)
-{
- int group = ext2fs_group_of_blk(fs, blk);
-
- if (inuse > 0)
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- else
- ext2fs_unmark_block_bitmap(fs->block_map, blk);
- fs->group_desc[group].bg_free_blocks_count -= inuse;
- fs->super->s_free_blocks_count -= inuse;
- ext2fs_mark_super_dirty(fs);
- ext2fs_mark_bb_dirty(fs);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * alloc_tables.c --- Allocate tables for a newly initialized
- * filesystem. Used by mke2fs when initializing a filesystem
- *
- * Copyright (C) 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
- ext2fs_block_bitmap bmap)
-{
- errcode_t retval;
- blk_t group_blk, start_blk, last_blk, new_blk, blk;
- int j;
-
- group_blk = fs->super->s_first_data_block +
- (group * fs->super->s_blocks_per_group);
-
- last_blk = group_blk + fs->super->s_blocks_per_group;
- if (last_blk >= fs->super->s_blocks_count)
- last_blk = fs->super->s_blocks_count - 1;
-
- if (!bmap)
- bmap = fs->block_map;
-
- /*
- * Allocate the block and inode bitmaps, if necessary
- */
- if (fs->stride) {
- start_blk = group_blk + fs->inode_blocks_per_group;
- start_blk += ((fs->stride * group) %
- (last_blk - start_blk));
- if (start_blk > last_blk)
- start_blk = group_blk;
- } else
- start_blk = group_blk;
-
- if (!fs->group_desc[group].bg_block_bitmap) {
- retval = ext2fs_get_free_blocks(fs, start_blk, last_blk,
- 1, bmap, &new_blk);
- if (retval == EXT2_ET_BLOCK_ALLOC_FAIL)
- retval = ext2fs_get_free_blocks(fs, group_blk,
- last_blk, 1, bmap, &new_blk);
- if (retval)
- return retval;
- ext2fs_mark_block_bitmap(bmap, new_blk);
- fs->group_desc[group].bg_block_bitmap = new_blk;
- }
-
- if (!fs->group_desc[group].bg_inode_bitmap) {
- retval = ext2fs_get_free_blocks(fs, start_blk, last_blk,
- 1, bmap, &new_blk);
- if (retval == EXT2_ET_BLOCK_ALLOC_FAIL)
- retval = ext2fs_get_free_blocks(fs, group_blk,
- last_blk, 1, bmap, &new_blk);
- if (retval)
- return retval;
- ext2fs_mark_block_bitmap(bmap, new_blk);
- fs->group_desc[group].bg_inode_bitmap = new_blk;
- }
-
- /*
- * Allocate the inode table
- */
- if (!fs->group_desc[group].bg_inode_table) {
- retval = ext2fs_get_free_blocks(fs, group_blk, last_blk,
- fs->inode_blocks_per_group,
- bmap, &new_blk);
- if (retval)
- return retval;
- for (j=0, blk = new_blk;
- j < fs->inode_blocks_per_group;
- j++, blk++)
- ext2fs_mark_block_bitmap(bmap, blk);
- fs->group_desc[group].bg_inode_table = new_blk;
- }
-
-
- return 0;
-}
-
-
-
-errcode_t ext2fs_allocate_tables(ext2_filsys fs)
-{
- errcode_t retval;
- dgrp_t i;
-
- for (i = 0; i < fs->group_desc_count; i++) {
- retval = ext2fs_allocate_group_table(fs, i, fs->block_map);
- if (retval)
- return retval;
- }
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * badblocks.c --- routines to manipulate the bad block structure
- *
- * Copyright (C) 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-/*
- * Helper function for making a badblocks list
- */
-static errcode_t make_u32_list(int size, int num, __u32 *list,
- ext2_u32_list *ret)
-{
- ext2_u32_list bb;
- errcode_t retval;
-
- retval = ext2fs_get_mem(sizeof(struct ext2_struct_u32_list), &bb);
- if (retval)
- return retval;
- memset(bb, 0, sizeof(struct ext2_struct_u32_list));
- bb->magic = EXT2_ET_MAGIC_BADBLOCKS_LIST;
- bb->size = size ? size : 10;
- bb->num = num;
- retval = ext2fs_get_mem(bb->size * sizeof(blk_t), &bb->list);
- if (!bb->list) {
- ext2fs_free_mem(&bb);
- return retval;
- }
- if (list)
- memcpy(bb->list, list, bb->size * sizeof(blk_t));
- else
- memset(bb->list, 0, bb->size * sizeof(blk_t));
- *ret = bb;
- return 0;
-}
-
-
-/*
- * This procedure creates an empty u32 list.
- */
-errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size)
-{
- return make_u32_list(size, 0, 0, ret);
-}
-
-/*
- * This procedure creates an empty badblocks list.
- */
-errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, int size)
-{
- return make_u32_list(size, 0, 0, (ext2_badblocks_list *) ret);
-}
-
-
-/*
- * This procedure copies a badblocks list
- */
-errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest)
-{
- errcode_t retval;
-
- retval = make_u32_list(src->size, src->num, src->list, dest);
- if (retval)
- return retval;
- (*dest)->badblocks_flags = src->badblocks_flags;
- return 0;
-}
-
-errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
- ext2_badblocks_list *dest)
-{
- return ext2fs_u32_copy((ext2_u32_list) src,
- (ext2_u32_list *) dest);
-}
-
-/*
- * This procedure frees a badblocks list.
- *
- * (note: moved to closefs.c)
- */
-
-
-/*
- * This procedure adds a block to a badblocks list.
- */
-errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk)
-{
- errcode_t retval;
- int i, j;
- unsigned long old_size;
-
- EXT2_CHECK_MAGIC(bb, EXT2_ET_MAGIC_BADBLOCKS_LIST);
-
- if (bb->num >= bb->size) {
- old_size = bb->size * sizeof(__u32);
- bb->size += 100;
- retval = ext2fs_resize_mem(old_size, bb->size * sizeof(__u32),
- &bb->list);
- if (retval) {
- bb->size -= 100;
- return retval;
- }
- }
-
- /*
- * Add special case code for appending to the end of the list
- */
- i = bb->num-1;
- if ((bb->num != 0) && (bb->list[i] == blk))
- return 0;
- if ((bb->num == 0) || (bb->list[i] < blk)) {
- bb->list[bb->num++] = blk;
- return 0;
- }
-
- j = bb->num;
- for (i=0; i < bb->num; i++) {
- if (bb->list[i] == blk)
- return 0;
- if (bb->list[i] > blk) {
- j = i;
- break;
- }
- }
- for (i=bb->num; i > j; i--)
- bb->list[i] = bb->list[i-1];
- bb->list[j] = blk;
- bb->num++;
- return 0;
-}
-
-errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, blk_t blk)
-{
- return ext2fs_u32_list_add((ext2_u32_list) bb, (__u32) blk);
-}
-
-/*
- * This procedure finds a particular block is on a badblocks
- * list.
- */
-int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk)
-{
- int low, high, mid;
-
- if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
- return -1;
-
- if (bb->num == 0)
- return -1;
-
- low = 0;
- high = bb->num-1;
- if (blk == bb->list[low])
- return low;
- if (blk == bb->list[high])
- return high;
-
- while (low < high) {
- mid = (low+high)/2;
- if (mid == low || mid == high)
- break;
- if (blk == bb->list[mid])
- return mid;
- if (blk < bb->list[mid])
- high = mid;
- else
- low = mid;
- }
- return -1;
-}
-
-/*
- * This procedure tests to see if a particular block is on a badblocks
- * list.
- */
-int ext2fs_u32_list_test(ext2_u32_list bb, __u32 blk)
-{
- if (ext2fs_u32_list_find(bb, blk) < 0)
- return 0;
- else
- return 1;
-}
-
-int ext2fs_badblocks_list_test(ext2_badblocks_list bb, blk_t blk)
-{
- return ext2fs_u32_list_test((ext2_u32_list) bb, (__u32) blk);
-}
-
-
-/*
- * Remove a block from the badblock list
- */
-int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk)
-{
- int remloc, i;
-
- if (bb->num == 0)
- return -1;
-
- remloc = ext2fs_u32_list_find(bb, blk);
- if (remloc < 0)
- return -1;
-
- for (i = remloc ; i < bb->num-1; i++)
- bb->list[i] = bb->list[i+1];
- bb->num--;
- return 0;
-}
-
-void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk)
-{
- ext2fs_u32_list_del(bb, blk);
-}
-
-errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
- ext2_u32_iterate *ret)
-{
- ext2_u32_iterate iter;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(bb, EXT2_ET_MAGIC_BADBLOCKS_LIST);
-
- retval = ext2fs_get_mem(sizeof(struct ext2_struct_u32_iterate), &iter);
- if (retval)
- return retval;
-
- iter->magic = EXT2_ET_MAGIC_BADBLOCKS_ITERATE;
- iter->bb = bb;
- iter->ptr = 0;
- *ret = iter;
- return 0;
-}
-
-errcode_t ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
- ext2_badblocks_iterate *ret)
-{
- return ext2fs_u32_list_iterate_begin((ext2_u32_list) bb,
- (ext2_u32_iterate *) ret);
-}
-
-
-int ext2fs_u32_list_iterate(ext2_u32_iterate iter, __u32 *blk)
-{
- ext2_u32_list bb;
-
- if (iter->magic != EXT2_ET_MAGIC_BADBLOCKS_ITERATE)
- return 0;
-
- bb = iter->bb;
-
- if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
- return 0;
-
- if (iter->ptr < bb->num) {
- *blk = bb->list[iter->ptr++];
- return 1;
- }
- *blk = 0;
- return 0;
-}
-
-int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, blk_t *blk)
-{
- return ext2fs_u32_list_iterate((ext2_u32_iterate) iter,
- (__u32 *) blk);
-}
-
-
-void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter)
-{
- if (!iter || (iter->magic != EXT2_ET_MAGIC_BADBLOCKS_ITERATE))
- return;
-
- iter->bb = 0;
- ext2fs_free_mem(&iter);
-}
-
-void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter)
-{
- ext2fs_u32_list_iterate_end((ext2_u32_iterate) iter);
-}
-
-
-int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2)
-{
- EXT2_CHECK_MAGIC(bb1, EXT2_ET_MAGIC_BADBLOCKS_LIST);
- EXT2_CHECK_MAGIC(bb2, EXT2_ET_MAGIC_BADBLOCKS_LIST);
-
- if (bb1->num != bb2->num)
- return 0;
-
- if (memcmp(bb1->list, bb2->list, bb1->num * sizeof(blk_t)) != 0)
- return 0;
- return 1;
-}
-
-int ext2fs_badblocks_equal(ext2_badblocks_list bb1, ext2_badblocks_list bb2)
-{
- return ext2fs_u32_list_equal((ext2_u32_list) bb1,
- (ext2_u32_list) bb2);
-}
-
-int ext2fs_u32_list_count(ext2_u32_list bb)
-{
- return bb->num;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bb_compat.c --- compatibility badblocks routines
- *
- * Copyright (C) 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-errcode_t badblocks_list_create(badblocks_list *ret, int size)
-{
- return ext2fs_badblocks_list_create(ret, size);
-}
-
-void badblocks_list_free(badblocks_list bb)
-{
- ext2fs_badblocks_list_free(bb);
-}
-
-errcode_t badblocks_list_add(badblocks_list bb, blk_t blk)
-{
- return ext2fs_badblocks_list_add(bb, blk);
-}
-
-int badblocks_list_test(badblocks_list bb, blk_t blk)
-{
- return ext2fs_badblocks_list_test(bb, blk);
-}
-
-errcode_t badblocks_list_iterate_begin(badblocks_list bb,
- badblocks_iterate *ret)
-{
- return ext2fs_badblocks_list_iterate_begin(bb, ret);
-}
-
-int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk)
-{
- return ext2fs_badblocks_list_iterate(iter, blk);
-}
-
-void badblocks_list_iterate_end(badblocks_iterate iter)
-{
- ext2fs_badblocks_list_iterate_end(iter);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bb_inode.c --- routines to update the bad block inode.
- *
- * WARNING: This routine modifies a lot of state in the filesystem; if
- * this routine returns an error, the bad block inode may be in an
- * inconsistent state.
- *
- * Copyright (C) 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct set_badblock_record {
- ext2_badblocks_iterate bb_iter;
- int bad_block_count;
- blk_t *ind_blocks;
- int max_ind_blocks;
- int ind_blocks_size;
- int ind_blocks_ptr;
- char *block_buf;
- errcode_t err;
-};
-
-static int set_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block, int ref_offset,
- void *priv_data);
-static int clear_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block, int ref_offset,
- void *priv_data);
-
-/*
- * Given a bad blocks bitmap, update the bad blocks inode to reflect
- * the map.
- */
-errcode_t ext2fs_update_bb_inode(ext2_filsys fs, ext2_badblocks_list bb_list)
-{
- errcode_t retval;
- struct set_badblock_record rec;
- struct ext2_inode inode;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!fs->block_map)
- return EXT2_ET_NO_BLOCK_BITMAP;
-
- rec.bad_block_count = 0;
- rec.ind_blocks_size = rec.ind_blocks_ptr = 0;
- rec.max_ind_blocks = 10;
- retval = ext2fs_get_mem(rec.max_ind_blocks * sizeof(blk_t),
- &rec.ind_blocks);
- if (retval)
- return retval;
- memset(rec.ind_blocks, 0, rec.max_ind_blocks * sizeof(blk_t));
- retval = ext2fs_get_mem(fs->blocksize, &rec.block_buf);
- if (retval)
- goto cleanup;
- memset(rec.block_buf, 0, fs->blocksize);
- rec.err = 0;
-
- /*
- * First clear the old bad blocks (while saving the indirect blocks)
- */
- retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO,
- BLOCK_FLAG_DEPTH_TRAVERSE, 0,
- clear_bad_block_proc, &rec);
- if (retval)
- goto cleanup;
- if (rec.err) {
- retval = rec.err;
- goto cleanup;
- }
-
- /*
- * Now set the bad blocks!
- *
- * First, mark the bad blocks as used. This prevents a bad
- * block from being used as an indirecto block for the bad
- * block inode (!).
- */
- if (bb_list) {
- retval = ext2fs_badblocks_list_iterate_begin(bb_list,
- &rec.bb_iter);
- if (retval)
- goto cleanup;
- retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO,
- BLOCK_FLAG_APPEND, 0,
- set_bad_block_proc, &rec);
- ext2fs_badblocks_list_iterate_end(rec.bb_iter);
- if (retval)
- goto cleanup;
- if (rec.err) {
- retval = rec.err;
- goto cleanup;
- }
- }
-
- /*
- * Update the bad block inode's mod time and block count
- * field.
- */
- retval = ext2fs_read_inode(fs, EXT2_BAD_INO, &inode);
- if (retval)
- goto cleanup;
-
- inode.i_atime = inode.i_mtime = time(0);
- if (!inode.i_ctime)
- inode.i_ctime = time(0);
- inode.i_blocks = rec.bad_block_count * (fs->blocksize / 512);
- inode.i_size = rec.bad_block_count * fs->blocksize;
-
- retval = ext2fs_write_inode(fs, EXT2_BAD_INO, &inode);
- if (retval)
- goto cleanup;
-
-cleanup:
- ext2fs_free_mem(&rec.ind_blocks);
- ext2fs_free_mem(&rec.block_buf);
- return retval;
-}
-
-/*
- * Helper function for update_bb_inode()
- *
- * Clear the bad blocks in the bad block inode, while saving the
- * indirect blocks.
- */
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-static int clear_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct set_badblock_record *rec = (struct set_badblock_record *)
- priv_data;
- errcode_t retval;
- unsigned long old_size;
-
- if (!*block_nr)
- return 0;
-
- /*
- * If the block number is outrageous, clear it and ignore it.
- */
- if (*block_nr >= fs->super->s_blocks_count ||
- *block_nr < fs->super->s_first_data_block) {
- *block_nr = 0;
- return BLOCK_CHANGED;
- }
-
- if (blockcnt < 0) {
- if (rec->ind_blocks_size >= rec->max_ind_blocks) {
- old_size = rec->max_ind_blocks * sizeof(blk_t);
- rec->max_ind_blocks += 10;
- retval = ext2fs_resize_mem(old_size,
- rec->max_ind_blocks * sizeof(blk_t),
- &rec->ind_blocks);
- if (retval) {
- rec->max_ind_blocks -= 10;
- rec->err = retval;
- return BLOCK_ABORT;
- }
- }
- rec->ind_blocks[rec->ind_blocks_size++] = *block_nr;
- }
-
- /*
- * Mark the block as unused, and update accounting information
- */
- ext2fs_block_alloc_stats(fs, *block_nr, -1);
-
- *block_nr = 0;
- return BLOCK_CHANGED;
-}
-
-
-/*
- * Helper function for update_bb_inode()
- *
- * Set the block list in the bad block inode, using the supplied bitmap.
- */
-#ifdef __TURBOC__
- #pragma argsused
-#endif
-static int set_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct set_badblock_record *rec = (struct set_badblock_record *)
- priv_data;
- errcode_t retval;
- blk_t blk;
-
- if (blockcnt >= 0) {
- /*
- * Get the next bad block.
- */
- if (!ext2fs_badblocks_list_iterate(rec->bb_iter, &blk))
- return BLOCK_ABORT;
- rec->bad_block_count++;
- } else {
- /*
- * An indirect block; fetch a block from the
- * previously used indirect block list. The block
- * most be not marked as used; if so, get another one.
- * If we run out of reserved indirect blocks, allocate
- * a new one.
- */
- retry:
- if (rec->ind_blocks_ptr < rec->ind_blocks_size) {
- blk = rec->ind_blocks[rec->ind_blocks_ptr++];
- if (ext2fs_test_block_bitmap(fs->block_map, blk))
- goto retry;
- } else {
- retval = ext2fs_new_block(fs, 0, 0, &blk);
- if (retval) {
- rec->err = retval;
- return BLOCK_ABORT;
- }
- }
- retval = io_channel_write_blk(fs->io, blk, 1, rec->block_buf);
- if (retval) {
- rec->err = retval;
- return BLOCK_ABORT;
- }
- }
-
- /*
- * Update block counts
- */
- ext2fs_block_alloc_stats(fs, blk, +1);
-
- *block_nr = blk;
- return BLOCK_CHANGED;
-}
-
-
-
-
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bitmaps.c --- routines to read, write, and manipulate the inode and
- * block bitmaps.
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-static errcode_t make_bitmap(__u32 start, __u32 end, __u32 real_end,
- const char *descr, char *init_map,
- ext2fs_generic_bitmap *ret)
-{
- ext2fs_generic_bitmap bitmap;
- errcode_t retval;
- size_t size;
-
- retval = ext2fs_get_mem(sizeof(struct ext2fs_struct_generic_bitmap),
- &bitmap);
- if (retval)
- return retval;
-
- bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
- bitmap->fs = NULL;
- bitmap->start = start;
- bitmap->end = end;
- bitmap->real_end = real_end;
- bitmap->base_error_code = EXT2_ET_BAD_GENERIC_MARK;
- if (descr) {
- retval = ext2fs_get_mem(strlen(descr)+1, &bitmap->description);
- if (retval) {
- ext2fs_free_mem(&bitmap);
- return retval;
- }
- strcpy(bitmap->description, descr);
- } else
- bitmap->description = 0;
-
- size = (size_t) (((bitmap->real_end - bitmap->start) / 8) + 1);
- retval = ext2fs_get_mem(size, &bitmap->bitmap);
- if (retval) {
- ext2fs_free_mem(&bitmap->description);
- ext2fs_free_mem(&bitmap);
- return retval;
- }
-
- if (init_map)
- memcpy(bitmap->bitmap, init_map, size);
- else
- memset(bitmap->bitmap, 0, size);
- *ret = bitmap;
- return 0;
-}
-
-errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
- __u32 end,
- __u32 real_end,
- const char *descr,
- ext2fs_generic_bitmap *ret)
-{
- return make_bitmap(start, end, real_end, descr, 0, ret);
-}
-
-errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
- ext2fs_generic_bitmap *dest)
-{
- errcode_t retval;
- ext2fs_generic_bitmap new_map;
-
- retval = make_bitmap(src->start, src->end, src->real_end,
- src->description, src->bitmap, &new_map);
- if (retval)
- return retval;
- new_map->magic = src->magic;
- new_map->fs = src->fs;
- new_map->base_error_code = src->base_error_code;
- *dest = new_map;
- return 0;
-}
-
-void ext2fs_set_bitmap_padding(ext2fs_generic_bitmap map)
-{
- __u32 i, j;
-
- for (i=map->end+1, j = i - map->start; i <= map->real_end; i++, j++)
- ext2fs_set_bit(j, map->bitmap);
-
- return;
-}
-
-errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
- const char *descr,
- ext2fs_inode_bitmap *ret)
-{
- ext2fs_inode_bitmap bitmap;
- errcode_t retval;
- __u32 start, end, real_end;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- fs->write_bitmaps = ext2fs_write_bitmaps;
-
- start = 1;
- end = fs->super->s_inodes_count;
- real_end = (EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count);
-
- retval = ext2fs_allocate_generic_bitmap(start, end, real_end,
- descr, &bitmap);
- if (retval)
- return retval;
-
- bitmap->magic = EXT2_ET_MAGIC_INODE_BITMAP;
- bitmap->fs = fs;
- bitmap->base_error_code = EXT2_ET_BAD_INODE_MARK;
-
- *ret = bitmap;
- return 0;
-}
-
-errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
- const char *descr,
- ext2fs_block_bitmap *ret)
-{
- ext2fs_block_bitmap bitmap;
- errcode_t retval;
- __u32 start, end, real_end;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- fs->write_bitmaps = ext2fs_write_bitmaps;
-
- start = fs->super->s_first_data_block;
- end = fs->super->s_blocks_count-1;
- real_end = (EXT2_BLOCKS_PER_GROUP(fs->super)
- * fs->group_desc_count)-1 + start;
-
- retval = ext2fs_allocate_generic_bitmap(start, end, real_end,
- descr, &bitmap);
- if (retval)
- return retval;
-
- bitmap->magic = EXT2_ET_MAGIC_BLOCK_BITMAP;
- bitmap->fs = fs;
- bitmap->base_error_code = EXT2_ET_BAD_BLOCK_MARK;
-
- *ret = bitmap;
- return 0;
-}
-
-errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
- ext2_ino_t end, ext2_ino_t *oend)
-{
- EXT2_CHECK_MAGIC(bitmap, EXT2_ET_MAGIC_INODE_BITMAP);
-
- if (end > bitmap->real_end)
- return EXT2_ET_FUDGE_INODE_BITMAP_END;
- if (oend)
- *oend = bitmap->end;
- bitmap->end = end;
- return 0;
-}
-
-errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
- blk_t end, blk_t *oend)
-{
- EXT2_CHECK_MAGIC(bitmap, EXT2_ET_MAGIC_BLOCK_BITMAP);
-
- if (end > bitmap->real_end)
- return EXT2_ET_FUDGE_BLOCK_BITMAP_END;
- if (oend)
- *oend = bitmap->end;
- bitmap->end = end;
- return 0;
-}
-
-void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap)
-{
- if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_INODE_BITMAP))
- return;
-
- memset(bitmap->bitmap, 0,
- (size_t) (((bitmap->real_end - bitmap->start) / 8) + 1));
-}
-
-void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap)
-{
- if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_BLOCK_BITMAP))
- return;
-
- memset(bitmap->bitmap, 0,
- (size_t) (((bitmap->real_end - bitmap->start) / 8) + 1));
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bitops.c --- Bitmap frobbing code. See bitops.h for the inlined
- * routines.
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#ifndef _EXT2_HAVE_ASM_BITOPS_
-
-/*
- * For the benefit of those who are trying to port Linux to another
- * architecture, here are some C-language equivalents. You should
- * recode these in the native assmebly language, if at all possible.
- *
- * C language equivalents written by Theodore Ts'o, 9/26/92.
- * Modified by Pete A. Zaitcev 7/14/95 to be portable to big endian
- * systems, as well as non-32 bit systems.
- */
-
-int ext2fs_set_bit(unsigned int nr,void * addr)
-{
- int mask, retval;
- unsigned char *ADDR = (unsigned char *) addr;
-
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- retval = mask & *ADDR;
- *ADDR |= mask;
- return retval;
-}
-
-int ext2fs_clear_bit(unsigned int nr, void * addr)
-{
- int mask, retval;
- unsigned char *ADDR = (unsigned char *) addr;
-
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- retval = mask & *ADDR;
- *ADDR &= ~mask;
- return retval;
-}
-
-int ext2fs_test_bit(unsigned int nr, const void * addr)
-{
- int mask;
- const unsigned char *ADDR = (const unsigned char *) addr;
-
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- return (mask & *ADDR);
-}
-
-#endif /* !_EXT2_HAVE_ASM_BITOPS_ */
-
-void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg,
- const char *description)
-{
-#ifndef OMIT_COM_ERR
- if (description)
- bb_error_msg("#%lu for %s", arg, description);
- else
- bb_error_msg("#%lu", arg);
-#endif
-}
-
-void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap,
- int code, unsigned long arg)
-{
-#ifndef OMIT_COM_ERR
- if (bitmap->description)
- bb_error_msg("#%lu for %s", arg, bitmap->description);
- else
- bb_error_msg("#%lu", arg);
-#endif
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bitops.h --- Bitmap frobbing code. The byte swapping routines are
- * also included here.
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- * i386 bitops operations taken from <asm/bitops.h>, Copyright 1992,
- * Linus Torvalds.
- */
-
-#include <string.h>
-#include <strings.h>
-
-extern int ext2fs_set_bit(unsigned int nr,void * addr);
-extern int ext2fs_clear_bit(unsigned int nr, void * addr);
-extern int ext2fs_test_bit(unsigned int nr, const void * addr);
-extern __u16 ext2fs_swab16(__u16 val);
-extern __u32 ext2fs_swab32(__u32 val);
-
-#ifdef WORDS_BIGENDIAN
-#define ext2fs_cpu_to_le32(x) ext2fs_swab32((x))
-#define ext2fs_le32_to_cpu(x) ext2fs_swab32((x))
-#define ext2fs_cpu_to_le16(x) ext2fs_swab16((x))
-#define ext2fs_le16_to_cpu(x) ext2fs_swab16((x))
-#define ext2fs_cpu_to_be32(x) ((__u32)(x))
-#define ext2fs_be32_to_cpu(x) ((__u32)(x))
-#define ext2fs_cpu_to_be16(x) ((__u16)(x))
-#define ext2fs_be16_to_cpu(x) ((__u16)(x))
-#else
-#define ext2fs_cpu_to_le32(x) ((__u32)(x))
-#define ext2fs_le32_to_cpu(x) ((__u32)(x))
-#define ext2fs_cpu_to_le16(x) ((__u16)(x))
-#define ext2fs_le16_to_cpu(x) ((__u16)(x))
-#define ext2fs_cpu_to_be32(x) ext2fs_swab32((x))
-#define ext2fs_be32_to_cpu(x) ext2fs_swab32((x))
-#define ext2fs_cpu_to_be16(x) ext2fs_swab16((x))
-#define ext2fs_be16_to_cpu(x) ext2fs_swab16((x))
-#endif
-
-/*
- * EXT2FS bitmap manipulation routines.
- */
-
-/* Support for sending warning messages from the inline subroutines */
-extern const char *ext2fs_block_string;
-extern const char *ext2fs_inode_string;
-extern const char *ext2fs_mark_string;
-extern const char *ext2fs_unmark_string;
-extern const char *ext2fs_test_string;
-extern void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg,
- const char *description);
-extern void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap,
- int code, unsigned long arg);
-
-extern int ext2fs_mark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block);
-extern int ext2fs_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block);
-extern int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block);
-
-extern int ext2fs_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode);
-extern int ext2fs_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode);
-extern int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode);
-
-extern void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block);
-extern void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block);
-extern int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block);
-
-extern void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode);
-extern void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode);
-extern int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode);
-extern blk_t ext2fs_get_block_bitmap_start(ext2fs_block_bitmap bitmap);
-extern ext2_ino_t ext2fs_get_inode_bitmap_start(ext2fs_inode_bitmap bitmap);
-extern blk_t ext2fs_get_block_bitmap_end(ext2fs_block_bitmap bitmap);
-extern ext2_ino_t ext2fs_get_inode_bitmap_end(ext2fs_inode_bitmap bitmap);
-
-extern void ext2fs_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num);
-extern void ext2fs_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num);
-extern int ext2fs_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num);
-extern void ext2fs_fast_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num);
-extern void ext2fs_fast_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num);
-extern int ext2fs_fast_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num);
-extern void ext2fs_set_bitmap_padding(ext2fs_generic_bitmap map);
-
-/* These two routines moved to gen_bitmap.c */
-extern int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap,
- __u32 bitno);
-extern int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap,
- blk_t bitno);
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * block.c --- iterate over all blocks in an inode
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct block_context {
- ext2_filsys fs;
- int (*func)(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t bcount,
- blk_t ref_blk,
- int ref_offset,
- void *priv_data);
- e2_blkcnt_t bcount;
- int bsize;
- int flags;
- errcode_t errcode;
- char *ind_buf;
- char *dind_buf;
- char *tind_buf;
- void *priv_data;
-};
-
-static int block_iterate_ind(blk_t *ind_block, blk_t ref_block,
- int ref_offset, struct block_context *ctx)
-{
- int ret = 0, changed = 0;
- int i, flags, limit, offset;
- blk_t *block_nr;
-
- limit = ctx->fs->blocksize >> 2;
- if (!(ctx->flags & BLOCK_FLAG_DEPTH_TRAVERSE) &&
- !(ctx->flags & BLOCK_FLAG_DATA_ONLY))
- ret = (*ctx->func)(ctx->fs, ind_block,
- BLOCK_COUNT_IND, ref_block,
- ref_offset, ctx->priv_data);
- if (!*ind_block || (ret & BLOCK_ABORT)) {
- ctx->bcount += limit;
- return ret;
- }
- if (*ind_block >= ctx->fs->super->s_blocks_count ||
- *ind_block < ctx->fs->super->s_first_data_block) {
- ctx->errcode = EXT2_ET_BAD_IND_BLOCK;
- ret |= BLOCK_ERROR;
- return ret;
- }
- ctx->errcode = ext2fs_read_ind_block(ctx->fs, *ind_block,
- ctx->ind_buf);
- if (ctx->errcode) {
- ret |= BLOCK_ERROR;
- return ret;
- }
-
- block_nr = (blk_t *) ctx->ind_buf;
- offset = 0;
- if (ctx->flags & BLOCK_FLAG_APPEND) {
- for (i = 0; i < limit; i++, ctx->bcount++, block_nr++) {
- flags = (*ctx->func)(ctx->fs, block_nr, ctx->bcount,
- *ind_block, offset,
- ctx->priv_data);
- changed |= flags;
- if (flags & BLOCK_ABORT) {
- ret |= BLOCK_ABORT;
- break;
- }
- offset += sizeof(blk_t);
- }
- } else {
- for (i = 0; i < limit; i++, ctx->bcount++, block_nr++) {
- if (*block_nr == 0)
- continue;
- flags = (*ctx->func)(ctx->fs, block_nr, ctx->bcount,
- *ind_block, offset,
- ctx->priv_data);
- changed |= flags;
- if (flags & BLOCK_ABORT) {
- ret |= BLOCK_ABORT;
- break;
- }
- offset += sizeof(blk_t);
- }
- }
- if (changed & BLOCK_CHANGED) {
- ctx->errcode = ext2fs_write_ind_block(ctx->fs, *ind_block,
- ctx->ind_buf);
- if (ctx->errcode)
- ret |= BLOCK_ERROR | BLOCK_ABORT;
- }
- if ((ctx->flags & BLOCK_FLAG_DEPTH_TRAVERSE) &&
- !(ctx->flags & BLOCK_FLAG_DATA_ONLY) &&
- !(ret & BLOCK_ABORT))
- ret |= (*ctx->func)(ctx->fs, ind_block,
- BLOCK_COUNT_IND, ref_block,
- ref_offset, ctx->priv_data);
- return ret;
-}
-
-static int block_iterate_dind(blk_t *dind_block, blk_t ref_block,
- int ref_offset, struct block_context *ctx)
-{
- int ret = 0, changed = 0;
- int i, flags, limit, offset;
- blk_t *block_nr;
-
- limit = ctx->fs->blocksize >> 2;
- if (!(ctx->flags & (BLOCK_FLAG_DEPTH_TRAVERSE |
- BLOCK_FLAG_DATA_ONLY)))
- ret = (*ctx->func)(ctx->fs, dind_block,
- BLOCK_COUNT_DIND, ref_block,
- ref_offset, ctx->priv_data);
- if (!*dind_block || (ret & BLOCK_ABORT)) {
- ctx->bcount += limit*limit;
- return ret;
- }
- if (*dind_block >= ctx->fs->super->s_blocks_count ||
- *dind_block < ctx->fs->super->s_first_data_block) {
- ctx->errcode = EXT2_ET_BAD_DIND_BLOCK;
- ret |= BLOCK_ERROR;
- return ret;
- }
- ctx->errcode = ext2fs_read_ind_block(ctx->fs, *dind_block,
- ctx->dind_buf);
- if (ctx->errcode) {
- ret |= BLOCK_ERROR;
- return ret;
- }
-
- block_nr = (blk_t *) ctx->dind_buf;
- offset = 0;
- if (ctx->flags & BLOCK_FLAG_APPEND) {
- for (i = 0; i < limit; i++, block_nr++) {
- flags = block_iterate_ind(block_nr,
- *dind_block, offset,
- ctx);
- changed |= flags;
- if (flags & (BLOCK_ABORT | BLOCK_ERROR)) {
- ret |= flags & (BLOCK_ABORT | BLOCK_ERROR);
- break;
- }
- offset += sizeof(blk_t);
- }
- } else {
- for (i = 0; i < limit; i++, block_nr++) {
- if (*block_nr == 0) {
- ctx->bcount += limit;
- continue;
- }
- flags = block_iterate_ind(block_nr,
- *dind_block, offset,
- ctx);
- changed |= flags;
- if (flags & (BLOCK_ABORT | BLOCK_ERROR)) {
- ret |= flags & (BLOCK_ABORT | BLOCK_ERROR);
- break;
- }
- offset += sizeof(blk_t);
- }
- }
- if (changed & BLOCK_CHANGED) {
- ctx->errcode = ext2fs_write_ind_block(ctx->fs, *dind_block,
- ctx->dind_buf);
- if (ctx->errcode)
- ret |= BLOCK_ERROR | BLOCK_ABORT;
- }
- if ((ctx->flags & BLOCK_FLAG_DEPTH_TRAVERSE) &&
- !(ctx->flags & BLOCK_FLAG_DATA_ONLY) &&
- !(ret & BLOCK_ABORT))
- ret |= (*ctx->func)(ctx->fs, dind_block,
- BLOCK_COUNT_DIND, ref_block,
- ref_offset, ctx->priv_data);
- return ret;
-}
-
-static int block_iterate_tind(blk_t *tind_block, blk_t ref_block,
- int ref_offset, struct block_context *ctx)
-{
- int ret = 0, changed = 0;
- int i, flags, limit, offset;
- blk_t *block_nr;
-
- limit = ctx->fs->blocksize >> 2;
- if (!(ctx->flags & (BLOCK_FLAG_DEPTH_TRAVERSE |
- BLOCK_FLAG_DATA_ONLY)))
- ret = (*ctx->func)(ctx->fs, tind_block,
- BLOCK_COUNT_TIND, ref_block,
- ref_offset, ctx->priv_data);
- if (!*tind_block || (ret & BLOCK_ABORT)) {
- ctx->bcount += limit*limit*limit;
- return ret;
- }
- if (*tind_block >= ctx->fs->super->s_blocks_count ||
- *tind_block < ctx->fs->super->s_first_data_block) {
- ctx->errcode = EXT2_ET_BAD_TIND_BLOCK;
- ret |= BLOCK_ERROR;
- return ret;
- }
- ctx->errcode = ext2fs_read_ind_block(ctx->fs, *tind_block,
- ctx->tind_buf);
- if (ctx->errcode) {
- ret |= BLOCK_ERROR;
- return ret;
- }
-
- block_nr = (blk_t *) ctx->tind_buf;
- offset = 0;
- if (ctx->flags & BLOCK_FLAG_APPEND) {
- for (i = 0; i < limit; i++, block_nr++) {
- flags = block_iterate_dind(block_nr,
- *tind_block,
- offset, ctx);
- changed |= flags;
- if (flags & (BLOCK_ABORT | BLOCK_ERROR)) {
- ret |= flags & (BLOCK_ABORT | BLOCK_ERROR);
- break;
- }
- offset += sizeof(blk_t);
- }
- } else {
- for (i = 0; i < limit; i++, block_nr++) {
- if (*block_nr == 0) {
- ctx->bcount += limit*limit;
- continue;
- }
- flags = block_iterate_dind(block_nr,
- *tind_block,
- offset, ctx);
- changed |= flags;
- if (flags & (BLOCK_ABORT | BLOCK_ERROR)) {
- ret |= flags & (BLOCK_ABORT | BLOCK_ERROR);
- break;
- }
- offset += sizeof(blk_t);
- }
- }
- if (changed & BLOCK_CHANGED) {
- ctx->errcode = ext2fs_write_ind_block(ctx->fs, *tind_block,
- ctx->tind_buf);
- if (ctx->errcode)
- ret |= BLOCK_ERROR | BLOCK_ABORT;
- }
- if ((ctx->flags & BLOCK_FLAG_DEPTH_TRAVERSE) &&
- !(ctx->flags & BLOCK_FLAG_DATA_ONLY) &&
- !(ret & BLOCK_ABORT))
- ret |= (*ctx->func)(ctx->fs, tind_block,
- BLOCK_COUNT_TIND, ref_block,
- ref_offset, ctx->priv_data);
-
- return ret;
-}
-
-errcode_t ext2fs_block_iterate2(ext2_filsys fs,
- ext2_ino_t ino,
- int flags,
- char *block_buf,
- int (*func)(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_blk,
- int ref_offset,
- void *priv_data),
- void *priv_data)
-{
- int i;
- int got_inode = 0;
- int ret = 0;
- blk_t blocks[EXT2_N_BLOCKS]; /* directory data blocks */
- struct ext2_inode inode;
- errcode_t retval;
- struct block_context ctx;
- int limit;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- /*
- * Check to see if we need to limit large files
- */
- if (flags & BLOCK_FLAG_NO_LARGE) {
- ctx.errcode = ext2fs_read_inode(fs, ino, &inode);
- if (ctx.errcode)
- return ctx.errcode;
- got_inode = 1;
- if (!LINUX_S_ISDIR(inode.i_mode) &&
- (inode.i_size_high != 0))
- return EXT2_ET_FILE_TOO_BIG;
- }
-
- retval = ext2fs_get_blocks(fs, ino, blocks);
- if (retval)
- return retval;
-
- limit = fs->blocksize >> 2;
-
- ctx.fs = fs;
- ctx.func = func;
- ctx.priv_data = priv_data;
- ctx.flags = flags;
- ctx.bcount = 0;
- if (block_buf) {
- ctx.ind_buf = block_buf;
- } else {
- retval = ext2fs_get_mem(fs->blocksize * 3, &ctx.ind_buf);
- if (retval)
- return retval;
- }
- ctx.dind_buf = ctx.ind_buf + fs->blocksize;
- ctx.tind_buf = ctx.dind_buf + fs->blocksize;
-
- /*
- * Iterate over the HURD translator block (if present)
- */
- if ((fs->super->s_creator_os == EXT2_OS_HURD) &&
- !(flags & BLOCK_FLAG_DATA_ONLY)) {
- ctx.errcode = ext2fs_read_inode(fs, ino, &inode);
- if (ctx.errcode)
- goto abort_exit;
- got_inode = 1;
- if (inode.osd1.hurd1.h_i_translator) {
- ret |= (*ctx.func)(fs,
- &inode.osd1.hurd1.h_i_translator,
- BLOCK_COUNT_TRANSLATOR,
- 0, 0, priv_data);
- if (ret & BLOCK_ABORT)
- goto abort_exit;
- }
- }
-
- /*
- * Iterate over normal data blocks
- */
- for (i = 0; i < EXT2_NDIR_BLOCKS ; i++, ctx.bcount++) {
- if (blocks[i] || (flags & BLOCK_FLAG_APPEND)) {
- ret |= (*ctx.func)(fs, &blocks[i],
- ctx.bcount, 0, i, priv_data);
- if (ret & BLOCK_ABORT)
- goto abort_exit;
- }
- }
- if (*(blocks + EXT2_IND_BLOCK) || (flags & BLOCK_FLAG_APPEND)) {
- ret |= block_iterate_ind(blocks + EXT2_IND_BLOCK,
- 0, EXT2_IND_BLOCK, &ctx);
- if (ret & BLOCK_ABORT)
- goto abort_exit;
- } else
- ctx.bcount += limit;
- if (*(blocks + EXT2_DIND_BLOCK) || (flags & BLOCK_FLAG_APPEND)) {
- ret |= block_iterate_dind(blocks + EXT2_DIND_BLOCK,
- 0, EXT2_DIND_BLOCK, &ctx);
- if (ret & BLOCK_ABORT)
- goto abort_exit;
- } else
- ctx.bcount += limit * limit;
- if (*(blocks + EXT2_TIND_BLOCK) || (flags & BLOCK_FLAG_APPEND)) {
- ret |= block_iterate_tind(blocks + EXT2_TIND_BLOCK,
- 0, EXT2_TIND_BLOCK, &ctx);
- if (ret & BLOCK_ABORT)
- goto abort_exit;
- }
-
-abort_exit:
- if (ret & BLOCK_CHANGED) {
- if (!got_inode) {
- retval = ext2fs_read_inode(fs, ino, &inode);
- if (retval)
- return retval;
- }
- for (i=0; i < EXT2_N_BLOCKS; i++)
- inode.i_block[i] = blocks[i];
- retval = ext2fs_write_inode(fs, ino, &inode);
- if (retval)
- return retval;
- }
-
- if (!block_buf)
- ext2fs_free_mem(&ctx.ind_buf);
-
- return (ret & BLOCK_ERROR) ? ctx.errcode : 0;
-}
-
-/*
- * Emulate the old ext2fs_block_iterate function!
- */
-
-struct xlate {
- int (*func)(ext2_filsys fs,
- blk_t *blocknr,
- int bcount,
- void *priv_data);
- void *real_private;
-};
-
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-static int xlate_func(ext2_filsys fs, blk_t *blocknr, e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct xlate *xl = (struct xlate *) priv_data;
-
- return (*xl->func)(fs, blocknr, (int) blockcnt, xl->real_private);
-}
-
-errcode_t ext2fs_block_iterate(ext2_filsys fs,
- ext2_ino_t ino,
- int flags,
- char *block_buf,
- int (*func)(ext2_filsys fs,
- blk_t *blocknr,
- int blockcnt,
- void *priv_data),
- void *priv_data)
-{
- struct xlate xl;
-
- xl.real_private = priv_data;
- xl.func = func;
-
- return ext2fs_block_iterate2(fs, ino, BLOCK_FLAG_NO_LARGE | flags,
- block_buf, xlate_func, &xl);
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bmap.c --- logical to physical block mapping
- *
- * Copyright (C) 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
- char *block_buf, int bmap_flags,
- blk_t block, blk_t *phys_blk);
-
-#define inode_bmap(inode, nr) ((inode)->i_block[(nr)])
-
-static errcode_t block_ind_bmap(ext2_filsys fs, int flags,
- blk_t ind, char *block_buf,
- int *blocks_alloc,
- blk_t nr, blk_t *ret_blk)
-{
- errcode_t retval;
- blk_t b;
-
- if (!ind) {
- if (flags & BMAP_SET)
- return EXT2_ET_SET_BMAP_NO_IND;
- *ret_blk = 0;
- return 0;
- }
- retval = io_channel_read_blk(fs->io, ind, 1, block_buf);
- if (retval)
- return retval;
-
- if (flags & BMAP_SET) {
- b = *ret_blk;
-#if BB_BIG_ENDIAN
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))
- b = ext2fs_swab32(b);
-#endif
- ((blk_t *) block_buf)[nr] = b;
- return io_channel_write_blk(fs->io, ind, 1, block_buf);
- }
-
- b = ((blk_t *) block_buf)[nr];
-
-#if BB_BIG_ENDIAN
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
- b = ext2fs_swab32(b);
-#endif
-
- if (!b && (flags & BMAP_ALLOC)) {
- b = nr ? ((blk_t *) block_buf)[nr-1] : 0;
- retval = ext2fs_alloc_block(fs, b,
- block_buf + fs->blocksize, &b);
- if (retval)
- return retval;
-
-#if BB_BIG_ENDIAN
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))
- ((blk_t *) block_buf)[nr] = ext2fs_swab32(b);
- else
-#endif
- ((blk_t *) block_buf)[nr] = b;
-
- retval = io_channel_write_blk(fs->io, ind, 1, block_buf);
- if (retval)
- return retval;
-
- (*blocks_alloc)++;
- }
-
- *ret_blk = b;
- return 0;
-}
-
-static errcode_t block_dind_bmap(ext2_filsys fs, int flags,
- blk_t dind, char *block_buf,
- int *blocks_alloc,
- blk_t nr, blk_t *ret_blk)
-{
- blk_t b;
- errcode_t retval;
- blk_t addr_per_block;
-
- addr_per_block = (blk_t) fs->blocksize >> 2;
-
- retval = block_ind_bmap(fs, flags & ~BMAP_SET, dind, block_buf,
- blocks_alloc, nr / addr_per_block, &b);
- if (retval)
- return retval;
- retval = block_ind_bmap(fs, flags, b, block_buf, blocks_alloc,
- nr % addr_per_block, ret_blk);
- return retval;
-}
-
-static errcode_t block_tind_bmap(ext2_filsys fs, int flags,
- blk_t tind, char *block_buf,
- int *blocks_alloc,
- blk_t nr, blk_t *ret_blk)
-{
- blk_t b;
- errcode_t retval;
- blk_t addr_per_block;
-
- addr_per_block = (blk_t) fs->blocksize >> 2;
-
- retval = block_dind_bmap(fs, flags & ~BMAP_SET, tind, block_buf,
- blocks_alloc, nr / addr_per_block, &b);
- if (retval)
- return retval;
- retval = block_ind_bmap(fs, flags, b, block_buf, blocks_alloc,
- nr % addr_per_block, ret_blk);
- return retval;
-}
-
-errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, struct ext2_inode *inode,
- char *block_buf, int bmap_flags, blk_t block,
- blk_t *phys_blk)
-{
- struct ext2_inode inode_buf;
- blk_t addr_per_block;
- blk_t b;
- char *buf = 0;
- errcode_t retval = 0;
- int blocks_alloc = 0, inode_dirty = 0;
-
- if (!(bmap_flags & BMAP_SET))
- *phys_blk = 0;
-
- /* Read inode structure if necessary */
- if (!inode) {
- retval = ext2fs_read_inode(fs, ino, &inode_buf);
- if (retval)
- return retval;
- inode = &inode_buf;
- }
- addr_per_block = (blk_t) fs->blocksize >> 2;
-
- if (!block_buf) {
- retval = ext2fs_get_mem(fs->blocksize * 2, &buf);
- if (retval)
- return retval;
- block_buf = buf;
- }
-
- if (block < EXT2_NDIR_BLOCKS) {
- if (bmap_flags & BMAP_SET) {
- b = *phys_blk;
-#if BB_BIG_ENDIAN
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
- b = ext2fs_swab32(b);
-#endif
- inode_bmap(inode, block) = b;
- inode_dirty++;
- goto done;
- }
-
- *phys_blk = inode_bmap(inode, block);
- b = block ? inode_bmap(inode, block-1) : 0;
-
- if ((*phys_blk == 0) && (bmap_flags & BMAP_ALLOC)) {
- retval = ext2fs_alloc_block(fs, b, block_buf, &b);
- if (retval)
- goto done;
- inode_bmap(inode, block) = b;
- blocks_alloc++;
- *phys_blk = b;
- }
- goto done;
- }
-
- /* Indirect block */
- block -= EXT2_NDIR_BLOCKS;
- if (block < addr_per_block) {
- b = inode_bmap(inode, EXT2_IND_BLOCK);
- if (!b) {
- if (!(bmap_flags & BMAP_ALLOC)) {
- if (bmap_flags & BMAP_SET)
- retval = EXT2_ET_SET_BMAP_NO_IND;
- goto done;
- }
-
- b = inode_bmap(inode, EXT2_IND_BLOCK-1);
- retval = ext2fs_alloc_block(fs, b, block_buf, &b);
- if (retval)
- goto done;
- inode_bmap(inode, EXT2_IND_BLOCK) = b;
- blocks_alloc++;
- }
- retval = block_ind_bmap(fs, bmap_flags, b, block_buf,
- &blocks_alloc, block, phys_blk);
- goto done;
- }
-
- /* Doubly indirect block */
- block -= addr_per_block;
- if (block < addr_per_block * addr_per_block) {
- b = inode_bmap(inode, EXT2_DIND_BLOCK);
- if (!b) {
- if (!(bmap_flags & BMAP_ALLOC)) {
- if (bmap_flags & BMAP_SET)
- retval = EXT2_ET_SET_BMAP_NO_IND;
- goto done;
- }
-
- b = inode_bmap(inode, EXT2_IND_BLOCK);
- retval = ext2fs_alloc_block(fs, b, block_buf, &b);
- if (retval)
- goto done;
- inode_bmap(inode, EXT2_DIND_BLOCK) = b;
- blocks_alloc++;
- }
- retval = block_dind_bmap(fs, bmap_flags, b, block_buf,
- &blocks_alloc, block, phys_blk);
- goto done;
- }
-
- /* Triply indirect block */
- block -= addr_per_block * addr_per_block;
- b = inode_bmap(inode, EXT2_TIND_BLOCK);
- if (!b) {
- if (!(bmap_flags & BMAP_ALLOC)) {
- if (bmap_flags & BMAP_SET)
- retval = EXT2_ET_SET_BMAP_NO_IND;
- goto done;
- }
-
- b = inode_bmap(inode, EXT2_DIND_BLOCK);
- retval = ext2fs_alloc_block(fs, b, block_buf, &b);
- if (retval)
- goto done;
- inode_bmap(inode, EXT2_TIND_BLOCK) = b;
- blocks_alloc++;
- }
- retval = block_tind_bmap(fs, bmap_flags, b, block_buf,
- &blocks_alloc, block, phys_blk);
-done:
- ext2fs_free_mem(&buf);
- if ((retval == 0) && (blocks_alloc || inode_dirty)) {
- inode->i_blocks += (blocks_alloc * fs->blocksize) / 512;
- retval = ext2fs_write_inode(fs, ino, inode);
- }
- return retval;
-}
-
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * bmove.c --- Move blocks around to make way for a particular
- * filesystem structure.
- *
- * Copyright (C) 1997 Theodore Ts'o. This file may be redistributed
- * under the terms of the GNU Public License.
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-struct process_block_struct {
- ext2_ino_t ino;
- struct ext2_inode * inode;
- ext2fs_block_bitmap reserve;
- ext2fs_block_bitmap alloc_map;
- errcode_t error;
- char *buf;
- int add_dir;
- int flags;
-};
-
-static int process_block(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt, blk_t ref_block,
- int ref_offset, void *priv_data)
-{
- struct process_block_struct *pb;
- errcode_t retval;
- int ret;
- blk_t block, orig;
-
- pb = (struct process_block_struct *) priv_data;
- block = orig = *block_nr;
- ret = 0;
-
- /*
- * Let's see if this is one which we need to relocate
- */
- if (ext2fs_test_block_bitmap(pb->reserve, block)) {
- do {
- if (++block >= fs->super->s_blocks_count)
- block = fs->super->s_first_data_block;
- if (block == orig) {
- pb->error = EXT2_ET_BLOCK_ALLOC_FAIL;
- return BLOCK_ABORT;
- }
- } while (ext2fs_test_block_bitmap(pb->reserve, block) ||
- ext2fs_test_block_bitmap(pb->alloc_map, block));
-
- retval = io_channel_read_blk(fs->io, orig, 1, pb->buf);
- if (retval) {
- pb->error = retval;
- return BLOCK_ABORT;
- }
- retval = io_channel_write_blk(fs->io, block, 1, pb->buf);
- if (retval) {
- pb->error = retval;
- return BLOCK_ABORT;
- }
- *block_nr = block;
- ext2fs_mark_block_bitmap(pb->alloc_map, block);
- ret = BLOCK_CHANGED;
- if (pb->flags & EXT2_BMOVE_DEBUG)
- printf("ino=%ld, blockcnt=%lld, %d->%d\n", pb->ino,
- blockcnt, orig, block);
- }
- if (pb->add_dir) {
- retval = ext2fs_add_dir_block(fs->dblist, pb->ino,
- block, (int) blockcnt);
- if (retval) {
- pb->error = retval;
- ret |= BLOCK_ABORT;
- }
- }
- return ret;
-}
-
-errcode_t ext2fs_move_blocks(ext2_filsys fs,
- ext2fs_block_bitmap reserve,
- ext2fs_block_bitmap alloc_map,
- int flags)
-{
- ext2_ino_t ino;
- struct ext2_inode inode;
- errcode_t retval;
- struct process_block_struct pb;
- ext2_inode_scan scan;
- char *block_buf;
-
- retval = ext2fs_open_inode_scan(fs, 0, &scan);
- if (retval)
- return retval;
-
- pb.reserve = reserve;
- pb.error = 0;
- pb.alloc_map = alloc_map ? alloc_map : fs->block_map;
- pb.flags = flags;
-
- retval = ext2fs_get_mem(fs->blocksize * 4, &block_buf);
- if (retval)
- return retval;
- pb.buf = block_buf + fs->blocksize * 3;
-
- /*
- * If GET_DBLIST is set in the flags field, then we should
- * gather directory block information while we're doing the
- * block move.
- */
- if (flags & EXT2_BMOVE_GET_DBLIST) {
- ext2fs_free_dblist(fs->dblist);
- fs->dblist = NULL;
- retval = ext2fs_init_dblist(fs, 0);
- if (retval)
- return retval;
- }
-
- retval = ext2fs_get_next_inode(scan, &ino, &inode);
- if (retval)
- return retval;
-
- while (ino) {
- if ((inode.i_links_count == 0) ||
- !ext2fs_inode_has_valid_blocks(&inode))
- goto next;
-
- pb.ino = ino;
- pb.inode = &inode;
-
- pb.add_dir = (LINUX_S_ISDIR(inode.i_mode) &&
- flags & EXT2_BMOVE_GET_DBLIST);
-
- retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
- process_block, &pb);
- if (retval)
- return retval;
- if (pb.error)
- return pb.error;
-
- next:
- retval = ext2fs_get_next_inode(scan, &ino, &inode);
- if (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE)
- goto next;
- }
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * brel.h
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-struct ext2_block_relocate_entry {
- blk_t new;
- __s16 offset;
- __u16 flags;
- union {
- blk_t block_ref;
- ext2_ino_t inode_ref;
- } owner;
-};
-
-#define RELOCATE_TYPE_REF 0x0007
-#define RELOCATE_BLOCK_REF 0x0001
-#define RELOCATE_INODE_REF 0x0002
-
-typedef struct ext2_block_relocation_table *ext2_brel;
-
-struct ext2_block_relocation_table {
- __u32 magic;
- char *name;
- blk_t current;
- void *priv_data;
-
- /*
- * Add a block relocation entry.
- */
- errcode_t (*put)(ext2_brel brel, blk_t old,
- struct ext2_block_relocate_entry *ent);
-
- /*
- * Get a block relocation entry.
- */
- errcode_t (*get)(ext2_brel brel, blk_t old,
- struct ext2_block_relocate_entry *ent);
-
- /*
- * Initialize for iterating over the block relocation entries.
- */
- errcode_t (*start_iter)(ext2_brel brel);
-
- /*
- * The iterator function for the inode relocation entries.
- * Returns an inode number of 0 when out of entries.
- */
- errcode_t (*next)(ext2_brel brel, blk_t *old,
- struct ext2_block_relocate_entry *ent);
-
- /*
- * Move the inode relocation table from one block number to
- * another.
- */
- errcode_t (*move)(ext2_brel brel, blk_t old, blk_t new);
-
- /*
- * Remove a block relocation entry.
- */
- errcode_t (*delete)(ext2_brel brel, blk_t old);
-
-
- /*
- * Free the block relocation table.
- */
- errcode_t (*free)(ext2_brel brel);
-};
-
-errcode_t ext2fs_brel_memarray_create(char *name, blk_t max_block,
- ext2_brel *brel);
-
-#define ext2fs_brel_put(brel, old, ent) ((brel)->put((brel), old, ent))
-#define ext2fs_brel_get(brel, old, ent) ((brel)->get((brel), old, ent))
-#define ext2fs_brel_start_iter(brel) ((brel)->start_iter((brel)))
-#define ext2fs_brel_next(brel, old, ent) ((brel)->next((brel), old, ent))
-#define ext2fs_brel_move(brel, old, new) ((brel)->move((brel), old, new))
-#define ext2fs_brel_delete(brel, old) ((brel)->delete((brel), old))
-#define ext2fs_brel_free(brel) ((brel)->free((brel)))
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * brel_ma.c
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * TODO: rewrite to not use a direct array!!! (Fortunately this
- * module isn't really used yet.)
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-#include "brel.h"
-
-static errcode_t bma_put(ext2_brel brel, blk_t old,
- struct ext2_block_relocate_entry *ent);
-static errcode_t bma_get(ext2_brel brel, blk_t old,
- struct ext2_block_relocate_entry *ent);
-static errcode_t bma_start_iter(ext2_brel brel);
-static errcode_t bma_next(ext2_brel brel, blk_t *old,
- struct ext2_block_relocate_entry *ent);
-static errcode_t bma_move(ext2_brel brel, blk_t old, blk_t new);
-static errcode_t bma_delete(ext2_brel brel, blk_t old);
-static errcode_t bma_free(ext2_brel brel);
-
-struct brel_ma {
- __u32 magic;
- blk_t max_block;
- struct ext2_block_relocate_entry *entries;
-};
-
-errcode_t ext2fs_brel_memarray_create(char *name, blk_t max_block,
- ext2_brel *new_brel)
-{
- ext2_brel brel = 0;
- errcode_t retval;
- struct brel_ma *ma = 0;
- size_t size;
-
- *new_brel = 0;
-
- /*
- * Allocate memory structures
- */
- retval = ext2fs_get_mem(sizeof(struct ext2_block_relocation_table),
- &brel);
- if (retval)
- goto errout;
- memset(brel, 0, sizeof(struct ext2_block_relocation_table));
-
- retval = ext2fs_get_mem(strlen(name)+1, &brel->name);
- if (retval)
- goto errout;
- strcpy(brel->name, name);
-
- retval = ext2fs_get_mem(sizeof(struct brel_ma), &ma);
- if (retval)
- goto errout;
- memset(ma, 0, sizeof(struct brel_ma));
- brel->priv_data = ma;
-
- size = (size_t) (sizeof(struct ext2_block_relocate_entry) *
- (max_block+1));
- retval = ext2fs_get_mem(size, &ma->entries);
- if (retval)
- goto errout;
- memset(ma->entries, 0, size);
- ma->max_block = max_block;
-
- /*
- * Fill in the brel data structure
- */
- brel->put = bma_put;
- brel->get = bma_get;
- brel->start_iter = bma_start_iter;
- brel->next = bma_next;
- brel->move = bma_move;
- brel->delete = bma_delete;
- brel->free = bma_free;
-
- *new_brel = brel;
- return 0;
-
-errout:
- bma_free(brel);
- return retval;
-}
-
-static errcode_t bma_put(ext2_brel brel, blk_t old,
- struct ext2_block_relocate_entry *ent)
-{
- struct brel_ma *ma;
-
- ma = brel->priv_data;
- if (old > ma->max_block)
- return EXT2_ET_INVALID_ARGUMENT;
- ma->entries[(unsigned)old] = *ent;
- return 0;
-}
-
-static errcode_t bma_get(ext2_brel brel, blk_t old,
- struct ext2_block_relocate_entry *ent)
-{
- struct brel_ma *ma;
-
- ma = brel->priv_data;
- if (old > ma->max_block)
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned)old].new == 0)
- return ENOENT;
- *ent = ma->entries[old];
- return 0;
-}
-
-static errcode_t bma_start_iter(ext2_brel brel)
-{
- brel->current = 0;
- return 0;
-}
-
-static errcode_t bma_next(ext2_brel brel, blk_t *old,
- struct ext2_block_relocate_entry *ent)
-{
- struct brel_ma *ma;
-
- ma = brel->priv_data;
- while (++brel->current < ma->max_block) {
- if (ma->entries[(unsigned)brel->current].new == 0)
- continue;
- *old = brel->current;
- *ent = ma->entries[(unsigned)brel->current];
- return 0;
- }
- *old = 0;
- return 0;
-}
-
-static errcode_t bma_move(ext2_brel brel, blk_t old, blk_t new)
-{
- struct brel_ma *ma;
-
- ma = brel->priv_data;
- if ((old > ma->max_block) || (new > ma->max_block))
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned)old].new == 0)
- return ENOENT;
- ma->entries[(unsigned)new] = ma->entries[old];
- ma->entries[(unsigned)old].new = 0;
- return 0;
-}
-
-static errcode_t bma_delete(ext2_brel brel, blk_t old)
-{
- struct brel_ma *ma;
-
- ma = brel->priv_data;
- if (old > ma->max_block)
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned)old].new == 0)
- return ENOENT;
- ma->entries[(unsigned)old].new = 0;
- return 0;
-}
-
-static errcode_t bma_free(ext2_brel brel)
-{
- struct brel_ma *ma;
-
- if (!brel)
- return 0;
-
- ma = brel->priv_data;
-
- if (ma) {
- ext2fs_free_mem(&ma->entries);
- ext2fs_free_mem(&ma);
- }
- ext2fs_free_mem(&brel->name);
- ext2fs_free_mem(&brel);
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * check_desc.c --- Check the group descriptors of an ext2 filesystem
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * This routine sanity checks the group descriptors
- */
-errcode_t ext2fs_check_desc(ext2_filsys fs)
-{
- dgrp_t i;
- blk_t block = fs->super->s_first_data_block;
- blk_t next;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- for (i = 0; i < fs->group_desc_count; i++) {
- next = block + fs->super->s_blocks_per_group;
- /*
- * Check to make sure block bitmap for group is
- * located within the group.
- */
- if (fs->group_desc[i].bg_block_bitmap < block ||
- fs->group_desc[i].bg_block_bitmap >= next)
- return EXT2_ET_GDESC_BAD_BLOCK_MAP;
- /*
- * Check to make sure inode bitmap for group is
- * located within the group
- */
- if (fs->group_desc[i].bg_inode_bitmap < block ||
- fs->group_desc[i].bg_inode_bitmap >= next)
- return EXT2_ET_GDESC_BAD_INODE_MAP;
- /*
- * Check to make sure inode table for group is located
- * within the group
- */
- if (fs->group_desc[i].bg_inode_table < block ||
- ((fs->group_desc[i].bg_inode_table +
- fs->inode_blocks_per_group) >= next))
- return EXT2_ET_GDESC_BAD_INODE_TABLE;
-
- block = next;
- }
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * closefs.c --- close an ext2 filesystem
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <time.h>
-#include <string.h>
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-static int test_root(int a, int b)
-{
- if (a == 0)
- return 1;
- while (1) {
- if (a == 1)
- return 1;
- if (a % b)
- return 0;
- a = a / b;
- }
-}
-
-int ext2fs_bg_has_super(ext2_filsys fs, int group_block)
-{
- if (!(fs->super->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
- return 1;
-
- if (test_root(group_block, 3) || (test_root(group_block, 5)) ||
- test_root(group_block, 7))
- return 1;
-
- return 0;
-}
-
-int ext2fs_super_and_bgd_loc(ext2_filsys fs,
- dgrp_t group,
- blk_t *ret_super_blk,
- blk_t *ret_old_desc_blk,
- blk_t *ret_new_desc_blk,
- int *ret_meta_bg)
-{
- blk_t group_block, super_blk = 0, old_desc_blk = 0, new_desc_blk = 0;
- unsigned int meta_bg, meta_bg_size;
- int numblocks, has_super;
- int old_desc_blocks;
-
- group_block = fs->super->s_first_data_block +
- (group * fs->super->s_blocks_per_group);
-
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
- old_desc_blocks = fs->super->s_first_meta_bg;
- else
- old_desc_blocks =
- fs->desc_blocks + fs->super->s_reserved_gdt_blocks;
-
- if (group == fs->group_desc_count-1) {
- numblocks = (fs->super->s_blocks_count -
- fs->super->s_first_data_block) %
- fs->super->s_blocks_per_group;
- if (!numblocks)
- numblocks = fs->super->s_blocks_per_group;
- } else
- numblocks = fs->super->s_blocks_per_group;
-
- has_super = ext2fs_bg_has_super(fs, group);
-
- if (has_super) {
- super_blk = group_block;
- numblocks--;
- }
- meta_bg_size = (fs->blocksize / sizeof (struct ext2_group_desc));
- meta_bg = group / meta_bg_size;
-
- if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) ||
- (meta_bg < fs->super->s_first_meta_bg)) {
- if (has_super) {
- old_desc_blk = group_block + 1;
- numblocks -= old_desc_blocks;
- }
- } else {
- if (((group % meta_bg_size) == 0) ||
- ((group % meta_bg_size) == 1) ||
- ((group % meta_bg_size) == (meta_bg_size-1))) {
- if (has_super)
- has_super = 1;
- new_desc_blk = group_block + has_super;
- numblocks--;
- }
- }
-
- numblocks -= 2 + fs->inode_blocks_per_group;
-
- if (ret_super_blk)
- *ret_super_blk = super_blk;
- if (ret_old_desc_blk)
- *ret_old_desc_blk = old_desc_blk;
- if (ret_new_desc_blk)
- *ret_new_desc_blk = new_desc_blk;
- if (ret_meta_bg)
- *ret_meta_bg = meta_bg;
- return numblocks;
-}
-
-
-/*
- * This function forces out the primary superblock. We need to only
- * write out those fields which we have changed, since if the
- * filesystem is mounted, it may have changed some of the other
- * fields.
- *
- * It takes as input a superblock which has already been byte swapped
- * (if necessary).
- *
- */
-static errcode_t write_primary_superblock(ext2_filsys fs,
- struct ext2_super_block *super)
-{
- __u16 *old_super, *new_super;
- int check_idx, write_idx, size;
- errcode_t retval;
-
- if (!fs->io->manager->write_byte || !fs->orig_super) {
- io_channel_set_blksize(fs->io, SUPERBLOCK_OFFSET);
- retval = io_channel_write_blk(fs->io, 1, -SUPERBLOCK_SIZE,
- super);
- io_channel_set_blksize(fs->io, fs->blocksize);
- return retval;
- }
-
- old_super = (__u16 *) fs->orig_super;
- new_super = (__u16 *) super;
-
- for (check_idx = 0; check_idx < SUPERBLOCK_SIZE/2; check_idx++) {
- if (old_super[check_idx] == new_super[check_idx])
- continue;
- write_idx = check_idx;
- for (check_idx++; check_idx < SUPERBLOCK_SIZE/2; check_idx++)
- if (old_super[check_idx] == new_super[check_idx])
- break;
- size = 2 * (check_idx - write_idx);
- retval = io_channel_write_byte(fs->io,
- SUPERBLOCK_OFFSET + (2 * write_idx), size,
- new_super + write_idx);
- if (retval)
- return retval;
- }
- memcpy(fs->orig_super, super, SUPERBLOCK_SIZE);
- return 0;
-}
-
-
-/*
- * Updates the revision to EXT2_DYNAMIC_REV
- */
-void ext2fs_update_dynamic_rev(ext2_filsys fs)
-{
- struct ext2_super_block *sb = fs->super;
-
- if (sb->s_rev_level > EXT2_GOOD_OLD_REV)
- return;
-
- sb->s_rev_level = EXT2_DYNAMIC_REV;
- sb->s_first_ino = EXT2_GOOD_OLD_FIRST_INO;
- sb->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE;
- /* s_uuid is handled by e2fsck already */
- /* other fields should be left alone */
-}
-
-static errcode_t write_backup_super(ext2_filsys fs, dgrp_t group,
- blk_t group_block,
- struct ext2_super_block *super_shadow)
-{
- dgrp_t sgrp = group;
-
- if (sgrp > ((1 << 16) - 1))
- sgrp = (1 << 16) - 1;
-#if BB_BIG_ENDIAN
- if (fs->flags & EXT2_FLAG_SWAP_BYTES)
- super_shadow->s_block_group_nr = ext2fs_swab16(sgrp);
- else
-#endif
- fs->super->s_block_group_nr = sgrp;
-
- return io_channel_write_blk(fs->io, group_block, -SUPERBLOCK_SIZE,
- super_shadow);
-}
-
-
-errcode_t ext2fs_flush(ext2_filsys fs)
-{
- dgrp_t i;
- blk_t group_block;
- errcode_t retval;
- unsigned long fs_state;
- struct ext2_super_block *super_shadow = 0;
- struct ext2_group_desc *group_shadow = 0;
- char *group_ptr;
- int old_desc_blocks;
-#if BB_BIG_ENDIAN
- dgrp_t j;
- struct ext2_group_desc *s, *t;
-#endif
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- fs_state = fs->super->s_state;
-
- fs->super->s_wtime = time(NULL);
- fs->super->s_block_group_nr = 0;
-#if BB_BIG_ENDIAN
- if (fs->flags & EXT2_FLAG_SWAP_BYTES) {
- retval = EXT2_ET_NO_MEMORY;
- retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super_shadow);
- if (retval)
- goto errout;
- retval = ext2fs_get_mem((size_t)(fs->blocksize *
- fs->desc_blocks),
- &group_shadow);
- if (retval)
- goto errout;
- memset(group_shadow, 0, (size_t) fs->blocksize *
- fs->desc_blocks);
-
- /* swap the group descriptors */
- for (j=0, s=fs->group_desc, t=group_shadow;
- j < fs->group_desc_count; j++, t++, s++) {
- *t = *s;
- ext2fs_swap_group_desc(t);
- }
- } else {
- super_shadow = fs->super;
- group_shadow = fs->group_desc;
- }
-#else
- super_shadow = fs->super;
- group_shadow = fs->group_desc;
-#endif
-
- /*
- * If this is an external journal device, don't write out the
- * block group descriptors or any of the backup superblocks
- */
- if (fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
- goto write_primary_superblock_only;
-
- /*
- * Set the state of the FS to be non-valid. (The state has
- * already been backed up earlier, and will be restored after
- * we write out the backup superblocks.)
- */
- fs->super->s_state &= ~EXT2_VALID_FS;
-#if BB_BIG_ENDIAN
- if (fs->flags & EXT2_FLAG_SWAP_BYTES) {
- *super_shadow = *fs->super;
- ext2fs_swap_super(super_shadow);
- }
-#endif
-
- /*
- * Write out the master group descriptors, and the backup
- * superblocks and group descriptors.
- */
- group_block = fs->super->s_first_data_block;
- group_ptr = (char *) group_shadow;
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
- old_desc_blocks = fs->super->s_first_meta_bg;
- else
- old_desc_blocks = fs->desc_blocks;
-
- for (i = 0; i < fs->group_desc_count; i++) {
- blk_t super_blk, old_desc_blk, new_desc_blk;
- int meta_bg;
-
- ext2fs_super_and_bgd_loc(fs, i, &super_blk, &old_desc_blk,
- &new_desc_blk, &meta_bg);
-
- if (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) &&i && super_blk) {
- retval = write_backup_super(fs, i, super_blk,
- super_shadow);
- if (retval)
- goto errout;
- }
- if (fs->flags & EXT2_FLAG_SUPER_ONLY)
- continue;
- if ((old_desc_blk) &&
- (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) || (i == 0))) {
- retval = io_channel_write_blk(fs->io,
- old_desc_blk, old_desc_blocks, group_ptr);
- if (retval)
- goto errout;
- }
- if (new_desc_blk) {
- retval = io_channel_write_blk(fs->io, new_desc_blk,
- 1, group_ptr + (meta_bg*fs->blocksize));
- if (retval)
- goto errout;
- }
- }
- fs->super->s_block_group_nr = 0;
- fs->super->s_state = fs_state;
-#if BB_BIG_ENDIAN
- if (fs->flags & EXT2_FLAG_SWAP_BYTES) {
- *super_shadow = *fs->super;
- ext2fs_swap_super(super_shadow);
- }
-#endif
-
- /*
- * If the write_bitmaps() function is present, call it to
- * flush the bitmaps. This is done this way so that a simple
- * program that doesn't mess with the bitmaps doesn't need to
- * drag in the bitmaps.c code.
- */
- if (fs->write_bitmaps) {
- retval = fs->write_bitmaps(fs);
- if (retval)
- goto errout;
- }
-
-write_primary_superblock_only:
- /*
- * Write out master superblock. This has to be done
- * separately, since it is located at a fixed location
- * (SUPERBLOCK_OFFSET). We flush all other pending changes
- * out to disk first, just to avoid a race condition with an
- * insy-tinsy window....
- */
- retval = io_channel_flush(fs->io);
- retval = write_primary_superblock(fs, super_shadow);
- if (retval)
- goto errout;
-
- fs->flags &= ~EXT2_FLAG_DIRTY;
-
- retval = io_channel_flush(fs->io);
-errout:
- fs->super->s_state = fs_state;
- if (fs->flags & EXT2_FLAG_SWAP_BYTES) {
- if (super_shadow)
- ext2fs_free_mem(&super_shadow);
- if (group_shadow)
- ext2fs_free_mem(&group_shadow);
- }
- return retval;
-}
-
-errcode_t ext2fs_close(ext2_filsys fs)
-{
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (fs->flags & EXT2_FLAG_DIRTY) {
- retval = ext2fs_flush(fs);
- if (retval)
- return retval;
- }
- if (fs->write_bitmaps) {
- retval = fs->write_bitmaps(fs);
- if (retval)
- return retval;
- }
- ext2fs_free(fs);
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * cmp_bitmaps.c --- routines to compare inode and block bitmaps.
- *
- * Copyright (C) 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
- ext2fs_block_bitmap bm2)
-{
- blk_t i;
-
- EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_BLOCK_BITMAP);
- EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_BLOCK_BITMAP);
-
- if ((bm1->start != bm2->start) ||
- (bm1->end != bm2->end) ||
- (memcmp(bm1->bitmap, bm2->bitmap,
- (size_t) (bm1->end - bm1->start)/8)))
- return EXT2_ET_NEQ_BLOCK_BITMAP;
-
- for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
- if (ext2fs_fast_test_block_bitmap(bm1, i) !=
- ext2fs_fast_test_block_bitmap(bm2, i))
- return EXT2_ET_NEQ_BLOCK_BITMAP;
-
- return 0;
-}
-
-errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
- ext2fs_inode_bitmap bm2)
-{
- ext2_ino_t i;
-
- EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_INODE_BITMAP);
- EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_INODE_BITMAP);
-
- if ((bm1->start != bm2->start) ||
- (bm1->end != bm2->end) ||
- (memcmp(bm1->bitmap, bm2->bitmap,
- (size_t) (bm1->end - bm1->start)/8)))
- return EXT2_ET_NEQ_INODE_BITMAP;
-
- for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
- if (ext2fs_fast_test_inode_bitmap(bm1, i) !=
- ext2fs_fast_test_inode_bitmap(bm2, i))
- return EXT2_ET_NEQ_INODE_BITMAP;
-
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dblist.c -- directory block list functions
- *
- * Copyright 1997 by Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-static int dir_block_cmp(const void *a, const void *b);
-
-/*
- * Returns the number of directories in the filesystem as reported by
- * the group descriptors. Of course, the group descriptors could be
- * wrong!
- */
-errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs)
-{
- dgrp_t i;
- ext2_ino_t num_dirs, max_dirs;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- num_dirs = 0;
- max_dirs = fs->super->s_inodes_per_group;
- for (i = 0; i < fs->group_desc_count; i++) {
- if (fs->group_desc[i].bg_used_dirs_count > max_dirs)
- num_dirs += max_dirs / 8;
- else
- num_dirs += fs->group_desc[i].bg_used_dirs_count;
- }
- if (num_dirs > fs->super->s_inodes_count)
- num_dirs = fs->super->s_inodes_count;
-
- *ret_num_dirs = num_dirs;
-
- return 0;
-}
-
-/*
- * helper function for making a new directory block list (for
- * initialize and copy).
- */
-static errcode_t make_dblist(ext2_filsys fs, ext2_ino_t size, ext2_ino_t count,
- struct ext2_db_entry *list,
- ext2_dblist *ret_dblist)
-{
- ext2_dblist dblist;
- errcode_t retval;
- size_t len;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if ((ret_dblist == 0) && fs->dblist &&
- (fs->dblist->magic == EXT2_ET_MAGIC_DBLIST))
- return 0;
-
- retval = ext2fs_get_mem(sizeof(struct ext2_struct_dblist), &dblist);
- if (retval)
- return retval;
- memset(dblist, 0, sizeof(struct ext2_struct_dblist));
-
- dblist->magic = EXT2_ET_MAGIC_DBLIST;
- dblist->fs = fs;
- if (size)
- dblist->size = size;
- else {
- retval = ext2fs_get_num_dirs(fs, &dblist->size);
- if (retval)
- goto cleanup;
- dblist->size = (dblist->size * 2) + 12;
- }
- len = (size_t) sizeof(struct ext2_db_entry) * dblist->size;
- dblist->count = count;
- retval = ext2fs_get_mem(len, &dblist->list);
- if (retval)
- goto cleanup;
-
- if (list)
- memcpy(dblist->list, list, len);
- else
- memset(dblist->list, 0, len);
- if (ret_dblist)
- *ret_dblist = dblist;
- else
- fs->dblist = dblist;
- return 0;
-cleanup:
- ext2fs_free_mem(&dblist);
- return retval;
-}
-
-/*
- * Initialize a directory block list
- */
-errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist)
-{
- ext2_dblist dblist;
- errcode_t retval;
-
- retval = make_dblist(fs, 0, 0, 0, &dblist);
- if (retval)
- return retval;
-
- dblist->sorted = 1;
- if (ret_dblist)
- *ret_dblist = dblist;
- else
- fs->dblist = dblist;
-
- return 0;
-}
-
-/*
- * Copy a directory block list
- */
-errcode_t ext2fs_copy_dblist(ext2_dblist src, ext2_dblist *dest)
-{
- ext2_dblist dblist;
- errcode_t retval;
-
- retval = make_dblist(src->fs, src->size, src->count, src->list,
- &dblist);
- if (retval)
- return retval;
- dblist->sorted = src->sorted;
- *dest = dblist;
- return 0;
-}
-
-/*
- * Close a directory block list
- *
- * (moved to closefs.c)
- */
-
-
-/*
- * Add a directory block to the directory block list
- */
-errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, blk_t blk,
- int blockcnt)
-{
- struct ext2_db_entry *new_entry;
- errcode_t retval;
- unsigned long old_size;
-
- EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
-
- if (dblist->count >= dblist->size) {
- old_size = dblist->size * sizeof(struct ext2_db_entry);
- dblist->size += 100;
- retval = ext2fs_resize_mem(old_size, (size_t) dblist->size *
- sizeof(struct ext2_db_entry),
- &dblist->list);
- if (retval) {
- dblist->size -= 100;
- return retval;
- }
- }
- new_entry = dblist->list + ( (int) dblist->count++);
- new_entry->blk = blk;
- new_entry->ino = ino;
- new_entry->blockcnt = blockcnt;
-
- dblist->sorted = 0;
-
- return 0;
-}
-
-/*
- * Change the directory block to the directory block list
- */
-errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, blk_t blk,
- int blockcnt)
-{
- dgrp_t i;
-
- EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
-
- for (i=0; i < dblist->count; i++) {
- if ((dblist->list[i].ino != ino) ||
- (dblist->list[i].blockcnt != blockcnt))
- continue;
- dblist->list[i].blk = blk;
- dblist->sorted = 0;
- return 0;
- }
- return EXT2_ET_DB_NOT_FOUND;
-}
-
-void ext2fs_dblist_sort(ext2_dblist dblist,
- int (*sortfunc)(const void *,
- const void *))
-{
- if (!sortfunc)
- sortfunc = dir_block_cmp;
- qsort(dblist->list, (size_t) dblist->count,
- sizeof(struct ext2_db_entry), sortfunc);
- dblist->sorted = 1;
-}
-
-/*
- * This function iterates over the directory block list
- */
-errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
- int (*func)(ext2_filsys fs,
- struct ext2_db_entry *db_info,
- void *priv_data),
- void *priv_data)
-{
- ext2_ino_t i;
- int ret;
-
- EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
-
- if (!dblist->sorted)
- ext2fs_dblist_sort(dblist, 0);
- for (i=0; i < dblist->count; i++) {
- ret = (*func)(dblist->fs, &dblist->list[(int)i], priv_data);
- if (ret & DBLIST_ABORT)
- return 0;
- }
- return 0;
-}
-
-static int dir_block_cmp(const void *a, const void *b)
-{
- const struct ext2_db_entry *db_a =
- (const struct ext2_db_entry *) a;
- const struct ext2_db_entry *db_b =
- (const struct ext2_db_entry *) b;
-
- if (db_a->blk != db_b->blk)
- return (int) (db_a->blk - db_b->blk);
-
- if (db_a->ino != db_b->ino)
- return (int) (db_a->ino - db_b->ino);
-
- return (int) (db_a->blockcnt - db_b->blockcnt);
-}
-
-int ext2fs_dblist_count(ext2_dblist dblist)
-{
- return (int) dblist->count;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dblist_dir.c --- iterate by directory entry
- *
- * Copyright 1997 by Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
- void *priv_data);
-
-errcode_t ext2fs_dblist_dir_iterate(ext2_dblist dblist,
- int flags,
- char *block_buf,
- int (*func)(ext2_ino_t dir,
- int entry,
- struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data),
- void *priv_data)
-{
- errcode_t retval;
- struct dir_context ctx;
-
- EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
-
- ctx.dir = 0;
- ctx.flags = flags;
- if (block_buf)
- ctx.buf = block_buf;
- else {
- retval = ext2fs_get_mem(dblist->fs->blocksize, &ctx.buf);
- if (retval)
- return retval;
- }
- ctx.func = func;
- ctx.priv_data = priv_data;
- ctx.errcode = 0;
-
- retval = ext2fs_dblist_iterate(dblist, db_dir_proc, &ctx);
-
- if (!block_buf)
- ext2fs_free_mem(&ctx.buf);
- if (retval)
- return retval;
- return ctx.errcode;
-}
-
-static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
- void *priv_data)
-{
- struct dir_context *ctx;
-
- ctx = (struct dir_context *) priv_data;
- ctx->dir = db_info->ino;
-
- return ext2fs_process_dir_block(fs, &db_info->blk,
- db_info->blockcnt, 0, 0, priv_data);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dir_iterate.c --- ext2fs directory iteration operations
- *
- * Copyright (C) 1993, 1994, 1994, 1995, 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-/*
- * This function checks to see whether or not a potential deleted
- * directory entry looks valid. What we do is check the deleted entry
- * and each successive entry to make sure that they all look valid and
- * that the last deleted entry ends at the beginning of the next
- * undeleted entry. Returns 1 if the deleted entry looks valid, zero
- * if not valid.
- */
-static int ext2fs_validate_entry(char *buf, int offset, int final_offset)
-{
- struct ext2_dir_entry *dirent;
-
- while (offset < final_offset) {
- dirent = (struct ext2_dir_entry *)(buf + offset);
- offset += dirent->rec_len;
- if ((dirent->rec_len < 8) ||
- ((dirent->rec_len % 4) != 0) ||
- (((dirent->name_len & 0xFF)+8) > dirent->rec_len))
- return 0;
- }
- return (offset == final_offset);
-}
-
-errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
- ext2_ino_t dir,
- int flags,
- char *block_buf,
- int (*func)(ext2_ino_t dir,
- int entry,
- struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data),
- void *priv_data)
-{
- struct dir_context ctx;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_check_directory(fs, dir);
- if (retval)
- return retval;
-
- ctx.dir = dir;
- ctx.flags = flags;
- if (block_buf)
- ctx.buf = block_buf;
- else {
- retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
- if (retval)
- return retval;
- }
- ctx.func = func;
- ctx.priv_data = priv_data;
- ctx.errcode = 0;
- retval = ext2fs_block_iterate2(fs, dir, 0, 0,
- ext2fs_process_dir_block, &ctx);
- if (!block_buf)
- ext2fs_free_mem(&ctx.buf);
- if (retval)
- return retval;
- return ctx.errcode;
-}
-
-struct xlate {
- int (*func)(struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data);
- void *real_private;
-};
-
-static int xlate_func(ext2_ino_t dir EXT2FS_ATTR((unused)),
- int entry EXT2FS_ATTR((unused)),
- struct ext2_dir_entry *dirent, int offset,
- int blocksize, char *buf, void *priv_data)
-{
- struct xlate *xl = (struct xlate *) priv_data;
-
- return (*xl->func)(dirent, offset, blocksize, buf, xl->real_private);
-}
-
-extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
- ext2_ino_t dir,
- int flags,
- char *block_buf,
- int (*func)(struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data),
- void *priv_data)
-{
- struct xlate xl;
-
- xl.real_private = priv_data;
- xl.func = func;
-
- return ext2fs_dir_iterate2(fs, dir, flags, block_buf,
- xlate_func, &xl);
-}
-
-
-/*
- * Helper function which is private to this module. Used by
- * ext2fs_dir_iterate() and ext2fs_dblist_dir_iterate()
- */
-int ext2fs_process_dir_block(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct dir_context *ctx = (struct dir_context *) priv_data;
- unsigned int offset = 0;
- unsigned int next_real_entry = 0;
- int ret = 0;
- int changed = 0;
- int do_abort = 0;
- int entry, size;
- struct ext2_dir_entry *dirent;
-
- if (blockcnt < 0)
- return 0;
-
- entry = blockcnt ? DIRENT_OTHER_FILE : DIRENT_DOT_FILE;
-
- ctx->errcode = ext2fs_read_dir_block(fs, *blocknr, ctx->buf);
- if (ctx->errcode)
- return BLOCK_ABORT;
-
- while (offset < fs->blocksize) {
- dirent = (struct ext2_dir_entry *) (ctx->buf + offset);
- if (((offset + dirent->rec_len) > fs->blocksize) ||
- (dirent->rec_len < 8) ||
- ((dirent->rec_len % 4) != 0) ||
- (((dirent->name_len & 0xFF)+8) > dirent->rec_len)) {
- ctx->errcode = EXT2_ET_DIR_CORRUPTED;
- return BLOCK_ABORT;
- }
- if (!dirent->inode &&
- !(ctx->flags & DIRENT_FLAG_INCLUDE_EMPTY))
- goto next;
-
- ret = (ctx->func)(ctx->dir,
- (next_real_entry > offset) ?
- DIRENT_DELETED_FILE : entry,
- dirent, offset,
- fs->blocksize, ctx->buf,
- ctx->priv_data);
- if (entry < DIRENT_OTHER_FILE)
- entry++;
-
- if (ret & DIRENT_CHANGED)
- changed++;
- if (ret & DIRENT_ABORT) {
- do_abort++;
- break;
- }
-next:
- if (next_real_entry == offset)
- next_real_entry += dirent->rec_len;
-
- if (ctx->flags & DIRENT_FLAG_INCLUDE_REMOVED) {
- size = ((dirent->name_len & 0xFF) + 11) & ~3;
-
- if (dirent->rec_len != size) {
- unsigned int final_offset;
-
- final_offset = offset + dirent->rec_len;
- offset += size;
- while (offset < final_offset &&
- !ext2fs_validate_entry(ctx->buf,
- offset,
- final_offset))
- offset += 4;
- continue;
- }
- }
- offset += dirent->rec_len;
- }
-
- if (changed) {
- ctx->errcode = ext2fs_write_dir_block(fs, *blocknr, ctx->buf);
- if (ctx->errcode)
- return BLOCK_ABORT;
- }
- if (do_abort)
- return BLOCK_ABORT;
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dirblock.c --- directory block routines.
- *
- * Copyright (C) 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
- void *buf, int flags EXT2FS_ATTR((unused)))
-{
- errcode_t retval;
- char *p, *end;
- struct ext2_dir_entry *dirent;
- unsigned int name_len, rec_len;
-#if BB_BIG_ENDIAN
- unsigned int do_swap;
-#endif
-
- retval = io_channel_read_blk(fs->io, block, 1, buf);
- if (retval)
- return retval;
-#if BB_BIG_ENDIAN
- do_swap = (fs->flags & (EXT2_FLAG_SWAP_BYTES|
- EXT2_FLAG_SWAP_BYTES_READ)) != 0;
-#endif
- p = (char *) buf;
- end = (char *) buf + fs->blocksize;
- while (p < end-8) {
- dirent = (struct ext2_dir_entry *) p;
-#if BB_BIG_ENDIAN
- if (do_swap) {
- dirent->inode = ext2fs_swab32(dirent->inode);
- dirent->rec_len = ext2fs_swab16(dirent->rec_len);
- dirent->name_len = ext2fs_swab16(dirent->name_len);
- }
-#endif
- name_len = dirent->name_len;
-#ifdef WORDS_BIGENDIAN
- if (flags & EXT2_DIRBLOCK_V2_STRUCT)
- dirent->name_len = ext2fs_swab16(dirent->name_len);
-#endif
- rec_len = dirent->rec_len;
- if ((rec_len < 8) || (rec_len % 4)) {
- rec_len = 8;
- retval = EXT2_ET_DIR_CORRUPTED;
- }
- if (((name_len & 0xFF) + 8) > dirent->rec_len)
- retval = EXT2_ET_DIR_CORRUPTED;
- p += rec_len;
- }
- return retval;
-}
-
-errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
- void *buf)
-{
- return ext2fs_read_dir_block2(fs, block, buf, 0);
-}
-
-
-errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
- void *inbuf, int flags EXT2FS_ATTR((unused)))
-{
-#if BB_BIG_ENDIAN
- int do_swap = 0;
- errcode_t retval;
- char *p, *end;
- char *buf = 0;
- struct ext2_dir_entry *dirent;
-
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))
- do_swap = 1;
-
-#ifndef WORDS_BIGENDIAN
- if (!do_swap)
- return io_channel_write_blk(fs->io, block, 1, (char *) inbuf);
-#endif
-
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
- memcpy(buf, inbuf, fs->blocksize);
- p = buf;
- end = buf + fs->blocksize;
- while (p < end) {
- dirent = (struct ext2_dir_entry *) p;
- if ((dirent->rec_len < 8) ||
- (dirent->rec_len % 4)) {
- ext2fs_free_mem(&buf);
- return EXT2_ET_DIR_CORRUPTED;
- }
- p += dirent->rec_len;
- if (do_swap) {
- dirent->inode = ext2fs_swab32(dirent->inode);
- dirent->rec_len = ext2fs_swab16(dirent->rec_len);
- dirent->name_len = ext2fs_swab16(dirent->name_len);
- }
-#ifdef WORDS_BIGENDIAN
- if (flags & EXT2_DIRBLOCK_V2_STRUCT)
- dirent->name_len = ext2fs_swab16(dirent->name_len);
-#endif
- }
- retval = io_channel_write_blk(fs->io, block, 1, buf);
- ext2fs_free_mem(&buf);
- return retval;
-#else
- return io_channel_write_blk(fs->io, block, 1, (char *) inbuf);
-#endif
-}
-
-
-errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
- void *inbuf)
-{
- return ext2fs_write_dir_block2(fs, block, inbuf, 0);
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dirhash.c -- Calculate the hash of a directory entry
- *
- * Copyright (c) 2001 Daniel Phillips
- *
- * Copyright (c) 2002 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * Keyed 32-bit hash function using TEA in a Davis-Meyer function
- * H0 = Key
- * Hi = E Mi(Hi-1) + Hi-1
- *
- * (see Applied Cryptography, 2nd edition, p448).
- *
- * Jeremy Fitzhardinge <jeremy@zip.com.au> 1998
- *
- * This code is made available under the terms of the GPL
- */
-#define DELTA 0x9E3779B9
-
-static void TEA_transform(__u32 buf[4], __u32 const in[])
-{
- __u32 sum = 0;
- __u32 b0 = buf[0], b1 = buf[1];
- __u32 a = in[0], b = in[1], c = in[2], d = in[3];
- int n = 16;
-
- do {
- sum += DELTA;
- b0 += ((b1 << 4)+a) ^ (b1+sum) ^ ((b1 >> 5)+b);
- b1 += ((b0 << 4)+c) ^ (b0+sum) ^ ((b0 >> 5)+d);
- } while(--n);
-
- buf[0] += b0;
- buf[1] += b1;
-}
-
-/* F, G and H are basic MD4 functions: selection, majority, parity */
-#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
-#define G(x, y, z) (((x) & (y)) + (((x) ^ (y)) & (z)))
-#define H(x, y, z) ((x) ^ (y) ^ (z))
-
-/*
- * The generic round function. The application is so specific that
- * we don't bother protecting all the arguments with parens, as is generally
- * good macro practice, in favor of extra legibility.
- * Rotation is separate from addition to prevent recomputation
- */
-#define ROUND(f, a, b, c, d, x, s) \
- (a += f(b, c, d) + x, a = (a << s) | (a >> (32-s)))
-#define K1 0
-#define K2 013240474631UL
-#define K3 015666365641UL
-
-/*
- * Basic cut-down MD4 transform. Returns only 32 bits of result.
- */
-static void halfMD4Transform (__u32 buf[4], __u32 const in[])
-{
- __u32 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
-
- /* Round 1 */
- ROUND(F, a, b, c, d, in[0] + K1, 3);
- ROUND(F, d, a, b, c, in[1] + K1, 7);
- ROUND(F, c, d, a, b, in[2] + K1, 11);
- ROUND(F, b, c, d, a, in[3] + K1, 19);
- ROUND(F, a, b, c, d, in[4] + K1, 3);
- ROUND(F, d, a, b, c, in[5] + K1, 7);
- ROUND(F, c, d, a, b, in[6] + K1, 11);
- ROUND(F, b, c, d, a, in[7] + K1, 19);
-
- /* Round 2 */
- ROUND(G, a, b, c, d, in[1] + K2, 3);
- ROUND(G, d, a, b, c, in[3] + K2, 5);
- ROUND(G, c, d, a, b, in[5] + K2, 9);
- ROUND(G, b, c, d, a, in[7] + K2, 13);
- ROUND(G, a, b, c, d, in[0] + K2, 3);
- ROUND(G, d, a, b, c, in[2] + K2, 5);
- ROUND(G, c, d, a, b, in[4] + K2, 9);
- ROUND(G, b, c, d, a, in[6] + K2, 13);
-
- /* Round 3 */
- ROUND(H, a, b, c, d, in[3] + K3, 3);
- ROUND(H, d, a, b, c, in[7] + K3, 9);
- ROUND(H, c, d, a, b, in[2] + K3, 11);
- ROUND(H, b, c, d, a, in[6] + K3, 15);
- ROUND(H, a, b, c, d, in[1] + K3, 3);
- ROUND(H, d, a, b, c, in[5] + K3, 9);
- ROUND(H, c, d, a, b, in[0] + K3, 11);
- ROUND(H, b, c, d, a, in[4] + K3, 15);
-
- buf[0] += a;
- buf[1] += b;
- buf[2] += c;
- buf[3] += d;
-}
-
-#undef ROUND
-#undef F
-#undef G
-#undef H
-#undef K1
-#undef K2
-#undef K3
-
-/* The old legacy hash */
-static ext2_dirhash_t dx_hack_hash (const char *name, int len)
-{
- __u32 hash0 = 0x12a3fe2d, hash1 = 0x37abe8f9;
- while (len--) {
- __u32 hash = hash1 + (hash0 ^ (*name++ * 7152373));
-
- if (hash & 0x80000000) hash -= 0x7fffffff;
- hash1 = hash0;
- hash0 = hash;
- }
- return (hash0 << 1);
-}
-
-static void str2hashbuf(const char *msg, int len, __u32 *buf, int num)
-{
- __u32 pad, val;
- int i;
-
- pad = (__u32)len | ((__u32)len << 8);
- pad |= pad << 16;
-
- val = pad;
- if (len > num*4)
- len = num * 4;
- for (i=0; i < len; i++) {
- if ((i % 4) == 0)
- val = pad;
- val = msg[i] + (val << 8);
- if ((i % 4) == 3) {
- *buf++ = val;
- val = pad;
- num--;
- }
- }
- if (--num >= 0)
- *buf++ = val;
- while (--num >= 0)
- *buf++ = pad;
-}
-
-/*
- * Returns the hash of a filename. If len is 0 and name is NULL, then
- * this function can be used to test whether or not a hash version is
- * supported.
- *
- * The seed is an 4 longword (32 bits) "secret" which can be used to
- * uniquify a hash. If the seed is all zero's, then some default seed
- * may be used.
- *
- * A particular hash version specifies whether or not the seed is
- * represented, and whether or not the returned hash is 32 bits or 64
- * bits. 32 bit hashes will return 0 for the minor hash.
- */
-errcode_t ext2fs_dirhash(int version, const char *name, int len,
- const __u32 *seed,
- ext2_dirhash_t *ret_hash,
- ext2_dirhash_t *ret_minor_hash)
-{
- __u32 hash;
- __u32 minor_hash = 0;
- const char *p;
- int i;
- __u32 in[8], buf[4];
-
- /* Initialize the default seed for the hash checksum functions */
- buf[0] = 0x67452301;
- buf[1] = 0xefcdab89;
- buf[2] = 0x98badcfe;
- buf[3] = 0x10325476;
-
- /* Check to see if the seed is all zero's */
- if (seed) {
- for (i=0; i < 4; i++) {
- if (seed[i])
- break;
- }
- if (i < 4)
- memcpy(buf, seed, sizeof(buf));
- }
-
- switch (version) {
- case EXT2_HASH_LEGACY:
- hash = dx_hack_hash(name, len);
- break;
- case EXT2_HASH_HALF_MD4:
- p = name;
- while (len > 0) {
- str2hashbuf(p, len, in, 8);
- halfMD4Transform(buf, in);
- len -= 32;
- p += 32;
- }
- minor_hash = buf[2];
- hash = buf[1];
- break;
- case EXT2_HASH_TEA:
- p = name;
- while (len > 0) {
- str2hashbuf(p, len, in, 4);
- TEA_transform(buf, in);
- len -= 16;
- p += 16;
- }
- hash = buf[0];
- minor_hash = buf[1];
- break;
- default:
- *ret_hash = 0;
- return EXT2_ET_DIRHASH_UNSUPP;
- }
- *ret_hash = hash & ~1;
- if (ret_minor_hash)
- *ret_minor_hash = minor_hash;
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * dupfs.c --- duplicate a ext2 filesystem handle
- *
- * Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <time.h>
-#include <string.h>
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest)
-{
- ext2_filsys fs;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
- if (retval)
- return retval;
-
- *fs = *src;
- fs->device_name = 0;
- fs->super = 0;
- fs->orig_super = 0;
- fs->group_desc = 0;
- fs->inode_map = 0;
- fs->block_map = 0;
- fs->badblocks = 0;
- fs->dblist = 0;
-
- io_channel_bumpcount(fs->io);
- if (fs->icache)
- fs->icache->refcount++;
-
- retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name);
- if (retval)
- goto errout;
- strcpy(fs->device_name, src->device_name);
-
- retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super);
- if (retval)
- goto errout;
- memcpy(fs->super, src->super, SUPERBLOCK_SIZE);
-
- retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);
- if (retval)
- goto errout;
- memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE);
-
- retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize,
- &fs->group_desc);
- if (retval)
- goto errout;
- memcpy(fs->group_desc, src->group_desc,
- (size_t) fs->desc_blocks * fs->blocksize);
-
- if (src->inode_map) {
- retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map);
- if (retval)
- goto errout;
- }
- if (src->block_map) {
- retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map);
- if (retval)
- goto errout;
- }
- if (src->badblocks) {
- retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks);
- if (retval)
- goto errout;
- }
- if (src->dblist) {
- retval = ext2fs_copy_dblist(src->dblist, &fs->dblist);
- if (retval)
- goto errout;
- }
- *dest = fs;
- return 0;
-errout:
- ext2fs_free(fs);
- return retval;
-
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * e2image.h --- header file describing the ext2 image format
- *
- * Copyright (C) 2000 Theodore Ts'o.
- *
- * Note: this uses the POSIX IO interfaces, unlike most of the other
- * functions in this library. So sue me.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-
-struct ext2_image_hdr {
- __u32 magic_number; /* This must be EXT2_ET_MAGIC_E2IMAGE */
- char magic_descriptor[16]; /* "Ext2 Image 1.0", w/ null padding */
- char fs_hostname[64];/* Hostname of machine of image */
- char fs_netaddr[32]; /* Network address */
- __u32 fs_netaddr_type;/* 0 = IPV4, 1 = IPV6, etc. */
- __u32 fs_device; /* Device number of image */
- char fs_device_name[64]; /* Device name */
- char fs_uuid[16]; /* UUID of filesystem */
- __u32 fs_blocksize; /* Block size of the filesystem */
- __u32 fs_reserved[8];
-
- __u32 image_device; /* Device number of image file */
- __u32 image_inode; /* Inode number of image file */
- __u32 image_time; /* Time of image creation */
- __u32 image_reserved[8];
-
- __u32 offset_super; /* Byte offset of the sb and descriptors */
- __u32 offset_inode; /* Byte offset of the inode table */
- __u32 offset_inodemap; /* Byte offset of the inode bitmaps */
- __u32 offset_blockmap; /* Byte offset of the inode bitmaps */
- __u32 offset_reserved[8];
-};
-
-
-
-
-
-
-
-
-
-
-
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * expand.c --- expand an ext2fs directory
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct expand_dir_struct {
- int done;
- int newblocks;
- errcode_t err;
-};
-
-static int expand_dir_proc(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data;
- blk_t new_blk;
- static blk_t last_blk = 0;
- char *block;
- errcode_t retval;
-
- if (*blocknr) {
- last_blk = *blocknr;
- return 0;
- }
- retval = ext2fs_new_block(fs, last_blk, 0, &new_blk);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- if (blockcnt > 0) {
- retval = ext2fs_new_dir_block(fs, 0, 0, &block);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- es->done = 1;
- retval = ext2fs_write_dir_block(fs, new_blk, block);
- } else {
- retval = ext2fs_get_mem(fs->blocksize, &block);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- memset(block, 0, fs->blocksize);
- retval = io_channel_write_blk(fs->io, new_blk, 1, block);
- }
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- ext2fs_free_mem(&block);
- *blocknr = new_blk;
- ext2fs_block_alloc_stats(fs, new_blk, +1);
- es->newblocks++;
-
- if (es->done)
- return (BLOCK_CHANGED | BLOCK_ABORT);
- else
- return BLOCK_CHANGED;
-}
-
-errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir)
-{
- errcode_t retval;
- struct expand_dir_struct es;
- struct ext2_inode inode;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
-
- if (!fs->block_map)
- return EXT2_ET_NO_BLOCK_BITMAP;
-
- retval = ext2fs_check_directory(fs, dir);
- if (retval)
- return retval;
-
- es.done = 0;
- es.err = 0;
- es.newblocks = 0;
-
- retval = ext2fs_block_iterate2(fs, dir, BLOCK_FLAG_APPEND,
- 0, expand_dir_proc, &es);
-
- if (es.err)
- return es.err;
- if (!es.done)
- return EXT2_ET_EXPAND_DIR_ERR;
-
- /*
- * Update the size and block count fields in the inode.
- */
- retval = ext2fs_read_inode(fs, dir, &inode);
- if (retval)
- return retval;
-
- inode.i_size += fs->blocksize;
- inode.i_blocks += (fs->blocksize / 512) * es.newblocks;
-
- retval = ext2fs_write_inode(fs, dir, &inode);
- if (retval)
- return retval;
-
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ext2_err.h:
- * This file is automatically generated; please do not edit it.
- */
-
-#define EXT2_ET_BASE (2133571328L)
-#define EXT2_ET_MAGIC_EXT2FS_FILSYS (2133571329L)
-#define EXT2_ET_MAGIC_BADBLOCKS_LIST (2133571330L)
-#define EXT2_ET_MAGIC_BADBLOCKS_ITERATE (2133571331L)
-#define EXT2_ET_MAGIC_INODE_SCAN (2133571332L)
-#define EXT2_ET_MAGIC_IO_CHANNEL (2133571333L)
-#define EXT2_ET_MAGIC_UNIX_IO_CHANNEL (2133571334L)
-#define EXT2_ET_MAGIC_IO_MANAGER (2133571335L)
-#define EXT2_ET_MAGIC_BLOCK_BITMAP (2133571336L)
-#define EXT2_ET_MAGIC_INODE_BITMAP (2133571337L)
-#define EXT2_ET_MAGIC_GENERIC_BITMAP (2133571338L)
-#define EXT2_ET_MAGIC_TEST_IO_CHANNEL (2133571339L)
-#define EXT2_ET_MAGIC_DBLIST (2133571340L)
-#define EXT2_ET_MAGIC_ICOUNT (2133571341L)
-#define EXT2_ET_MAGIC_PQ_IO_CHANNEL (2133571342L)
-#define EXT2_ET_MAGIC_EXT2_FILE (2133571343L)
-#define EXT2_ET_MAGIC_E2IMAGE (2133571344L)
-#define EXT2_ET_MAGIC_INODE_IO_CHANNEL (2133571345L)
-#define EXT2_ET_MAGIC_RESERVED_9 (2133571346L)
-#define EXT2_ET_BAD_MAGIC (2133571347L)
-#define EXT2_ET_REV_TOO_HIGH (2133571348L)
-#define EXT2_ET_RO_FILSYS (2133571349L)
-#define EXT2_ET_GDESC_READ (2133571350L)
-#define EXT2_ET_GDESC_WRITE (2133571351L)
-#define EXT2_ET_GDESC_BAD_BLOCK_MAP (2133571352L)
-#define EXT2_ET_GDESC_BAD_INODE_MAP (2133571353L)
-#define EXT2_ET_GDESC_BAD_INODE_TABLE (2133571354L)
-#define EXT2_ET_INODE_BITMAP_WRITE (2133571355L)
-#define EXT2_ET_INODE_BITMAP_READ (2133571356L)
-#define EXT2_ET_BLOCK_BITMAP_WRITE (2133571357L)
-#define EXT2_ET_BLOCK_BITMAP_READ (2133571358L)
-#define EXT2_ET_INODE_TABLE_WRITE (2133571359L)
-#define EXT2_ET_INODE_TABLE_READ (2133571360L)
-#define EXT2_ET_NEXT_INODE_READ (2133571361L)
-#define EXT2_ET_UNEXPECTED_BLOCK_SIZE (2133571362L)
-#define EXT2_ET_DIR_CORRUPTED (2133571363L)
-#define EXT2_ET_SHORT_READ (2133571364L)
-#define EXT2_ET_SHORT_WRITE (2133571365L)
-#define EXT2_ET_DIR_NO_SPACE (2133571366L)
-#define EXT2_ET_NO_INODE_BITMAP (2133571367L)
-#define EXT2_ET_NO_BLOCK_BITMAP (2133571368L)
-#define EXT2_ET_BAD_INODE_NUM (2133571369L)
-#define EXT2_ET_BAD_BLOCK_NUM (2133571370L)
-#define EXT2_ET_EXPAND_DIR_ERR (2133571371L)
-#define EXT2_ET_TOOSMALL (2133571372L)
-#define EXT2_ET_BAD_BLOCK_MARK (2133571373L)
-#define EXT2_ET_BAD_BLOCK_UNMARK (2133571374L)
-#define EXT2_ET_BAD_BLOCK_TEST (2133571375L)
-#define EXT2_ET_BAD_INODE_MARK (2133571376L)
-#define EXT2_ET_BAD_INODE_UNMARK (2133571377L)
-#define EXT2_ET_BAD_INODE_TEST (2133571378L)
-#define EXT2_ET_FUDGE_BLOCK_BITMAP_END (2133571379L)
-#define EXT2_ET_FUDGE_INODE_BITMAP_END (2133571380L)
-#define EXT2_ET_BAD_IND_BLOCK (2133571381L)
-#define EXT2_ET_BAD_DIND_BLOCK (2133571382L)
-#define EXT2_ET_BAD_TIND_BLOCK (2133571383L)
-#define EXT2_ET_NEQ_BLOCK_BITMAP (2133571384L)
-#define EXT2_ET_NEQ_INODE_BITMAP (2133571385L)
-#define EXT2_ET_BAD_DEVICE_NAME (2133571386L)
-#define EXT2_ET_MISSING_INODE_TABLE (2133571387L)
-#define EXT2_ET_CORRUPT_SUPERBLOCK (2133571388L)
-#define EXT2_ET_BAD_GENERIC_MARK (2133571389L)
-#define EXT2_ET_BAD_GENERIC_UNMARK (2133571390L)
-#define EXT2_ET_BAD_GENERIC_TEST (2133571391L)
-#define EXT2_ET_SYMLINK_LOOP (2133571392L)
-#define EXT2_ET_CALLBACK_NOTHANDLED (2133571393L)
-#define EXT2_ET_BAD_BLOCK_IN_INODE_TABLE (2133571394L)
-#define EXT2_ET_UNSUPP_FEATURE (2133571395L)
-#define EXT2_ET_RO_UNSUPP_FEATURE (2133571396L)
-#define EXT2_ET_LLSEEK_FAILED (2133571397L)
-#define EXT2_ET_NO_MEMORY (2133571398L)
-#define EXT2_ET_INVALID_ARGUMENT (2133571399L)
-#define EXT2_ET_BLOCK_ALLOC_FAIL (2133571400L)
-#define EXT2_ET_INODE_ALLOC_FAIL (2133571401L)
-#define EXT2_ET_NO_DIRECTORY (2133571402L)
-#define EXT2_ET_TOO_MANY_REFS (2133571403L)
-#define EXT2_ET_FILE_NOT_FOUND (2133571404L)
-#define EXT2_ET_FILE_RO (2133571405L)
-#define EXT2_ET_DB_NOT_FOUND (2133571406L)
-#define EXT2_ET_DIR_EXISTS (2133571407L)
-#define EXT2_ET_UNIMPLEMENTED (2133571408L)
-#define EXT2_ET_CANCEL_REQUESTED (2133571409L)
-#define EXT2_ET_FILE_TOO_BIG (2133571410L)
-#define EXT2_ET_JOURNAL_NOT_BLOCK (2133571411L)
-#define EXT2_ET_NO_JOURNAL_SB (2133571412L)
-#define EXT2_ET_JOURNAL_TOO_SMALL (2133571413L)
-#define EXT2_ET_JOURNAL_UNSUPP_VERSION (2133571414L)
-#define EXT2_ET_LOAD_EXT_JOURNAL (2133571415L)
-#define EXT2_ET_NO_JOURNAL (2133571416L)
-#define EXT2_ET_DIRHASH_UNSUPP (2133571417L)
-#define EXT2_ET_BAD_EA_BLOCK_NUM (2133571418L)
-#define EXT2_ET_TOO_MANY_INODES (2133571419L)
-#define EXT2_ET_NOT_IMAGE_FILE (2133571420L)
-#define EXT2_ET_RES_GDT_BLOCKS (2133571421L)
-#define EXT2_ET_RESIZE_INODE_CORRUPT (2133571422L)
-#define EXT2_ET_SET_BMAP_NO_IND (2133571423L)
-
-#if 0
-extern const struct error_table et_ext2_error_table;
-extern void initialize_ext2_error_table(void);
-
-/* For compatibility with Heimdal */
-extern void initialize_ext2_error_table_r(struct et_list **list);
-
-#define ERROR_TABLE_BASE_ext2 (2133571328L)
-
-/* for compatibility with older versions... */
-#define init_ext2_err_tbl initialize_ext2_error_table
-#define ext2_err_base ERROR_TABLE_BASE_ext2
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- File: linux/ext2_ext_attr.h
-
- On-disk format of extended attributes for the ext2 filesystem.
-
- (C) 2000 Andreas Gruenbacher, <a.gruenbacher@computer.org>
-*/
-
-/* Magic value in attribute blocks */
-#define EXT2_EXT_ATTR_MAGIC_v1 0xEA010000
-#define EXT2_EXT_ATTR_MAGIC 0xEA020000
-
-/* Maximum number of references to one attribute block */
-#define EXT2_EXT_ATTR_REFCOUNT_MAX 1024
-
-struct ext2_ext_attr_header {
- __u32 h_magic; /* magic number for identification */
- __u32 h_refcount; /* reference count */
- __u32 h_blocks; /* number of disk blocks used */
- __u32 h_hash; /* hash value of all attributes */
- __u32 h_reserved[4]; /* zero right now */
-};
-
-struct ext2_ext_attr_entry {
- __u8 e_name_len; /* length of name */
- __u8 e_name_index; /* attribute name index */
- __u16 e_value_offs; /* offset in disk block of value */
- __u32 e_value_block; /* disk block attribute is stored on (n/i) */
- __u32 e_value_size; /* size of attribute value */
- __u32 e_hash; /* hash value of name and value */
-};
-
-#define EXT2_EXT_ATTR_PAD_BITS 2
-#define EXT2_EXT_ATTR_PAD (1<<EXT2_EXT_ATTR_PAD_BITS)
-#define EXT2_EXT_ATTR_ROUND (EXT2_EXT_ATTR_PAD-1)
-#define EXT2_EXT_ATTR_LEN(name_len) \
- (((name_len) + EXT2_EXT_ATTR_ROUND + \
- sizeof(struct ext2_ext_attr_entry)) & ~EXT2_EXT_ATTR_ROUND)
-#define EXT2_EXT_ATTR_NEXT(entry) \
- ( (struct ext2_ext_attr_entry *)( \
- (char *)(entry) + EXT2_EXT_ATTR_LEN((entry)->e_name_len)) )
-#define EXT2_EXT_ATTR_SIZE(size) \
- (((size) + EXT2_EXT_ATTR_ROUND) & ~EXT2_EXT_ATTR_ROUND)
-#define EXT2_EXT_IS_LAST_ENTRY(entry) (*((__u32 *)(entry)) == 0UL)
-#define EXT2_EXT_ATTR_NAME(entry) \
- (((char *) (entry)) + sizeof(struct ext2_ext_attr_entry))
-#define EXT2_XATTR_LEN(name_len) \
- (((name_len) + EXT2_EXT_ATTR_ROUND + \
- sizeof(struct ext2_xattr_entry)) & ~EXT2_EXT_ATTR_ROUND)
-#define EXT2_XATTR_SIZE(size) \
- (((size) + EXT2_EXT_ATTR_ROUND) & ~EXT2_EXT_ATTR_ROUND)
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * linux/include/linux/ext2_fs.h
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/include/linux/minix_fs.h
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-#ifndef _LINUX_EXT2_FS_H
-#define _LINUX_EXT2_FS_H
-
-#include "ext2_types.h" /* Changed from linux/types.h */
-
-/*
- * Special inode numbers
- */
-#define EXT2_BAD_INO 1 /* Bad blocks inode */
-#define EXT2_ROOT_INO 2 /* Root inode */
-#define EXT2_ACL_IDX_INO 3 /* ACL inode */
-#define EXT2_ACL_DATA_INO 4 /* ACL inode */
-#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
-#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
-#define EXT2_RESIZE_INO 7 /* Reserved group descriptors inode */
-#define EXT2_JOURNAL_INO 8 /* Journal inode */
-
-/* First non-reserved inode for old ext2 filesystems */
-#define EXT2_GOOD_OLD_FIRST_INO 11
-
-/*
- * The second extended file system magic number
- */
-#define EXT2_SUPER_MAGIC 0xEF53
-
-/* Assume that user mode programs are passing in an ext2fs superblock, not
- * a kernel struct super_block. This will allow us to call the feature-test
- * macros from user land. */
-#define EXT2_SB(sb) (sb)
-
-/*
- * Maximal count of links to a file
- */
-#define EXT2_LINK_MAX 32000
-
-/*
- * Macro-instructions used to manage several block sizes
- */
-#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
-#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
-#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
-#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
-#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
-#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
-#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
- EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size)
-#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
- EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino)
-#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof(__u32))
-
-/*
- * Macro-instructions used to manage fragments
- */
-#define EXT2_MIN_FRAG_SIZE EXT2_MIN_BLOCK_SIZE
-#define EXT2_MAX_FRAG_SIZE EXT2_MAX_BLOCK_SIZE
-#define EXT2_MIN_FRAG_LOG_SIZE EXT2_MIN_BLOCK_LOG_SIZE
-# define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
-# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
-
-/*
- * ACL structures
- */
-struct ext2_acl_header /* Header of Access Control Lists */
-{
- __u32 aclh_size;
- __u32 aclh_file_count;
- __u32 aclh_acle_count;
- __u32 aclh_first_acle;
-};
-
-struct ext2_acl_entry /* Access Control List Entry */
-{
- __u32 acle_size;
- __u16 acle_perms; /* Access permissions */
- __u16 acle_type; /* Type of entry */
- __u16 acle_tag; /* User or group identity */
- __u16 acle_pad1;
- __u32 acle_next; /* Pointer on next entry for the */
- /* same inode or on next free entry */
-};
-
-/*
- * Structure of a blocks group descriptor
- */
-struct ext2_group_desc
-{
- __u32 bg_block_bitmap; /* Blocks bitmap block */
- __u32 bg_inode_bitmap; /* Inodes bitmap block */
- __u32 bg_inode_table; /* Inodes table block */
- __u16 bg_free_blocks_count; /* Free blocks count */
- __u16 bg_free_inodes_count; /* Free inodes count */
- __u16 bg_used_dirs_count; /* Directories count */
- __u16 bg_pad;
- __u32 bg_reserved[3];
-};
-
-/*
- * Data structures used by the directory indexing feature
- *
- * Note: all of the multibyte integer fields are little endian.
- */
-
-/*
- * Note: dx_root_info is laid out so that if it should somehow get
- * overlaid by a dirent the two low bits of the hash version will be
- * zero. Therefore, the hash version mod 4 should never be 0.
- * Sincerely, the paranoia department.
- */
-struct ext2_dx_root_info {
- __u32 reserved_zero;
- __u8 hash_version; /* 0 now, 1 at release */
- __u8 info_length; /* 8 */
- __u8 indirect_levels;
- __u8 unused_flags;
-};
-
-#define EXT2_HASH_LEGACY 0
-#define EXT2_HASH_HALF_MD4 1
-#define EXT2_HASH_TEA 2
-
-#define EXT2_HASH_FLAG_INCOMPAT 0x1
-
-struct ext2_dx_entry {
- __u32 hash;
- __u32 block;
-};
-
-struct ext2_dx_countlimit {
- __u16 limit;
- __u16 count;
-};
-
-
-/*
- * Macro-instructions used to manage group descriptors
- */
-#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
-#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
-#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s))
-/* limits imposed by 16-bit value gd_free_{blocks,inode}_count */
-#define EXT2_MAX_BLOCKS_PER_GROUP(s) ((1 << 16) - 8)
-#define EXT2_MAX_INODES_PER_GROUP(s) ((1 << 16) - EXT2_INODES_PER_BLOCK(s))
-#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
-
-/*
- * Constants relative to the data blocks
- */
-#define EXT2_NDIR_BLOCKS 12
-#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
-#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
-#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
-#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
-
-/*
- * Inode flags
- */
-#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT2_UNRM_FL 0x00000002 /* Undelete */
-#define EXT2_COMPR_FL 0x00000004 /* Compress file */
-#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
-#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
-#define EXT2_NODUMP_FL 0x00000040 /* do not dump file */
-#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */
-/* Reserved for compression usage... */
-#define EXT2_DIRTY_FL 0x00000100
-#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */
-#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
-/* End compression flags --- maybe not all used */
-#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
-#define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */
-#define EXT2_IMAGIC_FL 0x00002000
-#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
-#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define EXT2_DIRSYNC_FL 0x00010000 /* Synchronous directory modifications */
-#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
-#define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
-#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
-
-#define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
-#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */
-
-/*
- * ioctl commands
- */
-#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
-#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
-#define EXT2_IOC_GETVERSION _IOR('v', 1, long)
-#define EXT2_IOC_SETVERSION _IOW('v', 2, long)
-
-/*
- * Structure of an inode on the disk
- */
-struct ext2_inode {
- __u16 i_mode; /* File mode */
- __u16 i_uid; /* Low 16 bits of Owner Uid */
- __u32 i_size; /* Size in bytes */
- __u32 i_atime; /* Access time */
- __u32 i_ctime; /* Creation time */
- __u32 i_mtime; /* Modification time */
- __u32 i_dtime; /* Deletion Time */
- __u16 i_gid; /* Low 16 bits of Group Id */
- __u16 i_links_count; /* Links count */
- __u32 i_blocks; /* Blocks count */
- __u32 i_flags; /* File flags */
- union {
- struct {
- __u32 l_i_reserved1;
- } linux1;
- struct {
- __u32 h_i_translator;
- } hurd1;
- struct {
- __u32 m_i_reserved1;
- } masix1;
- } osd1; /* OS dependent 1 */
- __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
- __u32 i_generation; /* File version (for NFS) */
- __u32 i_file_acl; /* File ACL */
- __u32 i_dir_acl; /* Directory ACL */
- __u32 i_faddr; /* Fragment address */
- union {
- struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
- __u16 l_i_uid_high; /* these 2 fields */
- __u16 l_i_gid_high; /* were reserved2[0] */
- __u32 l_i_reserved2;
- } linux2;
- struct {
- __u8 h_i_frag; /* Fragment number */
- __u8 h_i_fsize; /* Fragment size */
- __u16 h_i_mode_high;
- __u16 h_i_uid_high;
- __u16 h_i_gid_high;
- __u32 h_i_author;
- } hurd2;
- struct {
- __u8 m_i_frag; /* Fragment number */
- __u8 m_i_fsize; /* Fragment size */
- __u16 m_pad1;
- __u32 m_i_reserved2[2];
- } masix2;
- } osd2; /* OS dependent 2 */
-};
-
-/*
- * Permanent part of an large inode on the disk
- */
-struct ext2_inode_large {
- __u16 i_mode; /* File mode */
- __u16 i_uid; /* Low 16 bits of Owner Uid */
- __u32 i_size; /* Size in bytes */
- __u32 i_atime; /* Access time */
- __u32 i_ctime; /* Creation time */
- __u32 i_mtime; /* Modification time */
- __u32 i_dtime; /* Deletion Time */
- __u16 i_gid; /* Low 16 bits of Group Id */
- __u16 i_links_count; /* Links count */
- __u32 i_blocks; /* Blocks count */
- __u32 i_flags; /* File flags */
- union {
- struct {
- __u32 l_i_reserved1;
- } linux1;
- struct {
- __u32 h_i_translator;
- } hurd1;
- struct {
- __u32 m_i_reserved1;
- } masix1;
- } osd1; /* OS dependent 1 */
- __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
- __u32 i_generation; /* File version (for NFS) */
- __u32 i_file_acl; /* File ACL */
- __u32 i_dir_acl; /* Directory ACL */
- __u32 i_faddr; /* Fragment address */
- union {
- struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
- __u16 l_i_uid_high; /* these 2 fields */
- __u16 l_i_gid_high; /* were reserved2[0] */
- __u32 l_i_reserved2;
- } linux2;
- struct {
- __u8 h_i_frag; /* Fragment number */
- __u8 h_i_fsize; /* Fragment size */
- __u16 h_i_mode_high;
- __u16 h_i_uid_high;
- __u16 h_i_gid_high;
- __u32 h_i_author;
- } hurd2;
- struct {
- __u8 m_i_frag; /* Fragment number */
- __u8 m_i_fsize; /* Fragment size */
- __u16 m_pad1;
- __u32 m_i_reserved2[2];
- } masix2;
- } osd2; /* OS dependent 2 */
- __u16 i_extra_isize;
- __u16 i_pad1;
-};
-
-#define i_size_high i_dir_acl
-
-/*
- * File system states
- */
-#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
-#define EXT2_ERROR_FS 0x0002 /* Errors detected */
-
-/*
- * Mount flags
- */
-#define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */
-#define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */
-#define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */
-#define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */
-#define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
-#define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
-#define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
-#define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */
-
-#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
-#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
-#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \
- EXT2_MOUNT_##opt)
-/*
- * Maximal mount counts between two filesystem checks
- */
-#define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
-#define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */
-
-/*
- * Behaviour when detecting errors
- */
-#define EXT2_ERRORS_CONTINUE 1 /* Continue execution */
-#define EXT2_ERRORS_RO 2 /* Remount fs read-only */
-#define EXT2_ERRORS_PANIC 3 /* Panic */
-#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
-
-/*
- * Structure of the super block
- */
-struct ext2_super_block {
- __u32 s_inodes_count; /* Inodes count */
- __u32 s_blocks_count; /* Blocks count */
- __u32 s_r_blocks_count; /* Reserved blocks count */
- __u32 s_free_blocks_count; /* Free blocks count */
- __u32 s_free_inodes_count; /* Free inodes count */
- __u32 s_first_data_block; /* First Data Block */
- __u32 s_log_block_size; /* Block size */
- __s32 s_log_frag_size; /* Fragment size */
- __u32 s_blocks_per_group; /* # Blocks per group */
- __u32 s_frags_per_group; /* # Fragments per group */
- __u32 s_inodes_per_group; /* # Inodes per group */
- __u32 s_mtime; /* Mount time */
- __u32 s_wtime; /* Write time */
- __u16 s_mnt_count; /* Mount count */
- __s16 s_max_mnt_count; /* Maximal mount count */
- __u16 s_magic; /* Magic signature */
- __u16 s_state; /* File system state */
- __u16 s_errors; /* Behaviour when detecting errors */
- __u16 s_minor_rev_level; /* minor revision level */
- __u32 s_lastcheck; /* time of last check */
- __u32 s_checkinterval; /* max. time between checks */
- __u32 s_creator_os; /* OS */
- __u32 s_rev_level; /* Revision level */
- __u16 s_def_resuid; /* Default uid for reserved blocks */
- __u16 s_def_resgid; /* Default gid for reserved blocks */
- /*
- * These fields are for EXT2_DYNAMIC_REV superblocks only.
- *
- * Note: the difference between the compatible feature set and
- * the incompatible feature set is that if there is a bit set
- * in the incompatible feature set that the kernel doesn't
- * know about, it should refuse to mount the filesystem.
- *
- * e2fsck's requirements are more strict; if it doesn't know
- * about a feature in either the compatible or incompatible
- * feature set, it must abort and not try to meddle with
- * things it doesn't understand...
- */
- __u32 s_first_ino; /* First non-reserved inode */
- __u16 s_inode_size; /* size of inode structure */
- __u16 s_block_group_nr; /* block group # of this superblock */
- __u32 s_feature_compat; /* compatible feature set */
- __u32 s_feature_incompat; /* incompatible feature set */
- __u32 s_feature_ro_compat; /* readonly-compatible feature set */
- __u8 s_uuid[16]; /* 128-bit uuid for volume */
- char s_volume_name[16]; /* volume name */
- char s_last_mounted[64]; /* directory where last mounted */
- __u32 s_algorithm_usage_bitmap; /* For compression */
- /*
- * Performance hints. Directory preallocation should only
- * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
- */
- __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
- __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
- __u16 s_reserved_gdt_blocks; /* Per group table for online growth */
- /*
- * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
- */
- __u8 s_journal_uuid[16]; /* uuid of journal superblock */
- __u32 s_journal_inum; /* inode number of journal file */
- __u32 s_journal_dev; /* device number of journal file */
- __u32 s_last_orphan; /* start of list of inodes to delete */
- __u32 s_hash_seed[4]; /* HTREE hash seed */
- __u8 s_def_hash_version; /* Default hash version to use */
- __u8 s_jnl_backup_type; /* Default type of journal backup */
- __u16 s_reserved_word_pad;
- __u32 s_default_mount_opts;
- __u32 s_first_meta_bg; /* First metablock group */
- __u32 s_mkfs_time; /* When the filesystem was created */
- __u32 s_jnl_blocks[17]; /* Backup of the journal inode */
- __u32 s_reserved[172]; /* Padding to the end of the block */
-};
-
-/*
- * Codes for operating systems
- */
-#define EXT2_OS_LINUX 0
-#define EXT2_OS_HURD 1
-#define EXT2_OS_MASIX 2
-#define EXT2_OS_FREEBSD 3
-#define EXT2_OS_LITES 4
-
-/*
- * Revision levels
- */
-#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
-#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
-
-#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
-#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
-
-#define EXT2_GOOD_OLD_INODE_SIZE 128
-
-/*
- * Journal inode backup types
- */
-#define EXT3_JNL_BACKUP_BLOCKS 1
-
-/*
- * Feature set definitions
- */
-
-#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_feature_compat & (mask) )
-#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_feature_ro_compat & (mask) )
-#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
- ( EXT2_SB(sb)->s_feature_incompat & (mask) )
-
-#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
-#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
-#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
-#define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010
-#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
-
-#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
-#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-/* #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 not used */
-
-#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
-#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
-#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
-#define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040
-
-
-#define EXT2_FEATURE_COMPAT_SUPP 0
-#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE)
-#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
-
-/*
- * Default values for user and/or group using reserved blocks
- */
-#define EXT2_DEF_RESUID 0
-#define EXT2_DEF_RESGID 0
-
-/*
- * Default mount options
- */
-#define EXT2_DEFM_DEBUG 0x0001
-#define EXT2_DEFM_BSDGROUPS 0x0002
-#define EXT2_DEFM_XATTR_USER 0x0004
-#define EXT2_DEFM_ACL 0x0008
-#define EXT2_DEFM_UID16 0x0010
-#define EXT3_DEFM_JMODE 0x0060
-#define EXT3_DEFM_JMODE_DATA 0x0020
-#define EXT3_DEFM_JMODE_ORDERED 0x0040
-#define EXT3_DEFM_JMODE_WBACK 0x0060
-
-/*
- * Structure of a directory entry
- */
-#define EXT2_NAME_LEN 255
-
-struct ext2_dir_entry {
- __u32 inode; /* Inode number */
- __u16 rec_len; /* Directory entry length */
- __u16 name_len; /* Name length */
- char name[EXT2_NAME_LEN]; /* File name */
-};
-
-/*
- * The new version of the directory entry. Since EXT2 structures are
- * stored in intel byte order, and the name_len field could never be
- * bigger than 255 chars, it's safe to reclaim the extra byte for the
- * file_type field.
- */
-struct ext2_dir_entry_2 {
- __u32 inode; /* Inode number */
- __u16 rec_len; /* Directory entry length */
- __u8 name_len; /* Name length */
- __u8 file_type;
- char name[EXT2_NAME_LEN]; /* File name */
-};
-
-/*
- * Ext2 directory file types. Only the low 3 bits are used. The
- * other bits are reserved for now.
- */
-#define EXT2_FT_UNKNOWN 0
-#define EXT2_FT_REG_FILE 1
-#define EXT2_FT_DIR 2
-#define EXT2_FT_CHRDEV 3
-#define EXT2_FT_BLKDEV 4
-#define EXT2_FT_FIFO 5
-#define EXT2_FT_SOCK 6
-#define EXT2_FT_SYMLINK 7
-
-#define EXT2_FT_MAX 8
-
-/*
- * EXT2_DIR_PAD defines the directory entries boundaries
- *
- * NOTE: It must be a multiple of 4
- */
-#define EXT2_DIR_PAD 4
-#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
-#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
- ~EXT2_DIR_ROUND)
-
-#endif /* _LINUX_EXT2_FS_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * io.h --- the I/O manager abstraction
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#ifndef _EXT2FS_EXT2_IO_H
-#define _EXT2FS_EXT2_IO_H
-
-/*
- * ext2_loff_t is defined here since unix_io.c needs it.
- */
-#if defined(__GNUC__) || defined(HAS_LONG_LONG)
-typedef long long ext2_loff_t;
-#else
-typedef long ext2_loff_t;
-#endif
-
-/* llseek.c */
-/* ext2_loff_t ext2fs_llseek (int, ext2_loff_t, int); */
-#ifdef CONFIG_LFS
-# define ext2fs_llseek lseek64
-#else
-# define ext2fs_llseek lseek
-#endif
-
-typedef struct struct_io_manager *io_manager;
-typedef struct struct_io_channel *io_channel;
-
-#define CHANNEL_FLAGS_WRITETHROUGH 0x01
-
-struct struct_io_channel {
- errcode_t magic;
- io_manager manager;
- char *name;
- int block_size;
- errcode_t (*read_error)(io_channel channel,
- unsigned long block,
- int count,
- void *data,
- size_t size,
- int actual_bytes_read,
- errcode_t error);
- errcode_t (*write_error)(io_channel channel,
- unsigned long block,
- int count,
- const void *data,
- size_t size,
- int actual_bytes_written,
- errcode_t error);
- int refcount;
- int flags;
- int reserved[14];
- void *private_data;
- void *app_data;
-};
-
-struct struct_io_manager {
- errcode_t magic;
- const char *name;
- errcode_t (*open)(const char *name, int flags, io_channel *channel);
- errcode_t (*close)(io_channel channel);
- errcode_t (*set_blksize)(io_channel channel, int blksize);
- errcode_t (*read_blk)(io_channel channel, unsigned long block,
- int count, void *data);
- errcode_t (*write_blk)(io_channel channel, unsigned long block,
- int count, const void *data);
- errcode_t (*flush)(io_channel channel);
- errcode_t (*write_byte)(io_channel channel, unsigned long offset,
- int count, const void *data);
- errcode_t (*set_option)(io_channel channel, const char *option,
- const char *arg);
- int reserved[14];
-};
-
-#define IO_FLAG_RW 1
-
-/*
- * Convenience functions....
- */
-#define io_channel_close(c) ((c)->manager->close((c)))
-#define io_channel_set_blksize(c,s) ((c)->manager->set_blksize((c),s))
-#define io_channel_read_blk(c,b,n,d) ((c)->manager->read_blk((c),b,n,d))
-#define io_channel_write_blk(c,b,n,d) ((c)->manager->write_blk((c),b,n,d))
-#define io_channel_flush(c) ((c)->manager->flush((c)))
-#define io_channel_bumpcount(c) ((c)->refcount++)
-
-/* io_manager.c */
-extern errcode_t io_channel_set_options(io_channel channel,
- const char *options);
-extern errcode_t io_channel_write_byte(io_channel channel,
- unsigned long offset,
- int count, const void *data);
-
-/* unix_io.c */
-extern io_manager unix_io_manager;
-
-/* test_io.c */
-extern io_manager test_io_manager, test_io_backing_manager;
-extern void (*test_io_cb_read_blk)
- (unsigned long block, int count, errcode_t err);
-extern void (*test_io_cb_write_blk)
- (unsigned long block, int count, errcode_t err);
-extern void (*test_io_cb_set_blksize)
- (int blksize, errcode_t err);
-
-#endif /* _EXT2FS_EXT2_IO_H */
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-#include <linux/types.h>
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ext2fs.h --- ext2fs
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#ifndef _EXT2FS_EXT2FS_H
-#define _EXT2FS_EXT2FS_H
-
-
-#define EXT2FS_ATTR(x)
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Where the master copy of the superblock is located, and how big
- * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
- * the size of the superblock structure is not necessarily trustworthy
- * (some versions have the padding set up so that the superblock is
- * 1032 bytes long).
- */
-#define SUPERBLOCK_OFFSET 1024
-#define SUPERBLOCK_SIZE 1024
-
-/*
- * The last ext2fs revision level that this version of the library is
- * able to support.
- */
-#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
-
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "ext2_types.h"
-#include "ext2_fs.h"
-
-typedef __u32 ext2_ino_t;
-typedef __u32 blk_t;
-typedef __u32 dgrp_t;
-typedef __u32 ext2_off_t;
-typedef __s64 e2_blkcnt_t;
-typedef __u32 ext2_dirhash_t;
-
-#include "ext2_io.h"
-#include "ext2_err.h"
-
-typedef struct struct_ext2_filsys *ext2_filsys;
-
-struct ext2fs_struct_generic_bitmap {
- errcode_t magic;
- ext2_filsys fs;
- __u32 start, end;
- __u32 real_end;
- char * description;
- char * bitmap;
- errcode_t base_error_code;
- __u32 reserved[7];
-};
-
-#define EXT2FS_MARK_ERROR 0
-#define EXT2FS_UNMARK_ERROR 1
-#define EXT2FS_TEST_ERROR 2
-
-typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
-typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
-typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
-
-#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
-
-/*
- * badblocks list definitions
- */
-
-typedef struct ext2_struct_u32_list *ext2_badblocks_list;
-typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
-
-typedef struct ext2_struct_u32_list *ext2_u32_list;
-typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
-
-/* old */
-typedef struct ext2_struct_u32_list *badblocks_list;
-typedef struct ext2_struct_u32_iterate *badblocks_iterate;
-
-#define BADBLOCKS_FLAG_DIRTY 1
-
-/*
- * ext2_dblist structure and abstractions (see dblist.c)
- */
-struct ext2_db_entry {
- ext2_ino_t ino;
- blk_t blk;
- int blockcnt;
-};
-
-typedef struct ext2_struct_dblist *ext2_dblist;
-
-#define DBLIST_ABORT 1
-
-/*
- * ext2_fileio definitions
- */
-
-#define EXT2_FILE_WRITE 0x0001
-#define EXT2_FILE_CREATE 0x0002
-
-#define EXT2_FILE_MASK 0x00FF
-
-#define EXT2_FILE_BUF_DIRTY 0x4000
-#define EXT2_FILE_BUF_VALID 0x2000
-
-typedef struct ext2_file *ext2_file_t;
-
-#define EXT2_SEEK_SET 0
-#define EXT2_SEEK_CUR 1
-#define EXT2_SEEK_END 2
-
-/*
- * Flags for the ext2_filsys structure and for ext2fs_open()
- */
-#define EXT2_FLAG_RW 0x01
-#define EXT2_FLAG_CHANGED 0x02
-#define EXT2_FLAG_DIRTY 0x04
-#define EXT2_FLAG_VALID 0x08
-#define EXT2_FLAG_IB_DIRTY 0x10
-#define EXT2_FLAG_BB_DIRTY 0x20
-#define EXT2_FLAG_SWAP_BYTES 0x40
-#define EXT2_FLAG_SWAP_BYTES_READ 0x80
-#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
-#define EXT2_FLAG_MASTER_SB_ONLY 0x200
-#define EXT2_FLAG_FORCE 0x400
-#define EXT2_FLAG_SUPER_ONLY 0x800
-#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
-#define EXT2_FLAG_IMAGE_FILE 0x2000
-
-/*
- * Special flag in the ext2 inode i_flag field that means that this is
- * a new inode. (So that ext2_write_inode() can clear extra fields.)
- */
-#define EXT2_NEW_INODE_FL 0x80000000
-
-/*
- * Flags for mkjournal
- *
- * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
- */
-#define EXT2_MKJOURNAL_V1_SUPER 0x0000001
-
-struct struct_ext2_filsys {
- errcode_t magic;
- io_channel io;
- int flags;
- char * device_name;
- struct ext2_super_block * super;
- unsigned int blocksize;
- int fragsize;
- dgrp_t group_desc_count;
- unsigned long desc_blocks;
- struct ext2_group_desc * group_desc;
- int inode_blocks_per_group;
- ext2fs_inode_bitmap inode_map;
- ext2fs_block_bitmap block_map;
- errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
- errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
- errcode_t (*write_bitmaps)(ext2_filsys fs);
- errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode);
- errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode);
- ext2_badblocks_list badblocks;
- ext2_dblist dblist;
- __u32 stride; /* for mke2fs */
- struct ext2_super_block * orig_super;
- struct ext2_image_hdr * image_header;
- __u32 umask;
- /*
- * Reserved for future expansion
- */
- __u32 reserved[8];
-
- /*
- * Reserved for the use of the calling application.
- */
- void * priv_data;
-
- /*
- * Inode cache
- */
- struct ext2_inode_cache *icache;
- io_channel image_io;
-};
-
-#include "bitops.h"
-
-/*
- * Return flags for the block iterator functions
- */
-#define BLOCK_CHANGED 1
-#define BLOCK_ABORT 2
-#define BLOCK_ERROR 4
-
-/*
- * Block interate flags
- *
- * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
- * function should be called on blocks where the block number is zero.
- * This is used by ext2fs_expand_dir() to be able to add a new block
- * to an inode. It can also be used for programs that want to be able
- * to deal with files that contain "holes".
- *
- * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
- * indirect, doubly indirect, etc. blocks should be called after all
- * of the blocks containined in the indirect blocks are processed.
- * This is useful if you are going to be deallocating blocks from an
- * inode.
- *
- * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
- * called for data blocks only.
- *
- * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
- * ext2fs_block_iterate2 that large files won't be accepted.
- */
-#define BLOCK_FLAG_APPEND 1
-#define BLOCK_FLAG_HOLE 1
-#define BLOCK_FLAG_DEPTH_TRAVERSE 2
-#define BLOCK_FLAG_DATA_ONLY 4
-
-#define BLOCK_FLAG_NO_LARGE 0x1000
-
-/*
- * Magic "block count" return values for the block iterator function.
- */
-#define BLOCK_COUNT_IND (-1)
-#define BLOCK_COUNT_DIND (-2)
-#define BLOCK_COUNT_TIND (-3)
-#define BLOCK_COUNT_TRANSLATOR (-4)
-
-#if 0
-/*
- * Flags for ext2fs_move_blocks
- */
-#define EXT2_BMOVE_GET_DBLIST 0x0001
-#define EXT2_BMOVE_DEBUG 0x0002
-#endif
-
-/*
- * Flags for directory block reading and writing functions
- */
-#define EXT2_DIRBLOCK_V2_STRUCT 0x0001
-
-/*
- * Return flags for the directory iterator functions
- */
-#define DIRENT_CHANGED 1
-#define DIRENT_ABORT 2
-#define DIRENT_ERROR 3
-
-/*
- * Directory iterator flags
- */
-
-#define DIRENT_FLAG_INCLUDE_EMPTY 1
-#define DIRENT_FLAG_INCLUDE_REMOVED 2
-
-#define DIRENT_DOT_FILE 1
-#define DIRENT_DOT_DOT_FILE 2
-#define DIRENT_OTHER_FILE 3
-#define DIRENT_DELETED_FILE 4
-
-/*
- * Inode scan definitions
- */
-typedef struct ext2_struct_inode_scan *ext2_inode_scan;
-
-/*
- * ext2fs_scan flags
- */
-#define EXT2_SF_CHK_BADBLOCKS 0x0001
-#define EXT2_SF_BAD_INODE_BLK 0x0002
-#define EXT2_SF_BAD_EXTRA_BYTES 0x0004
-#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
-
-/*
- * ext2fs_check_if_mounted flags
- */
-#define EXT2_MF_MOUNTED 1
-#define EXT2_MF_ISROOT 2
-#define EXT2_MF_READONLY 4
-#define EXT2_MF_SWAP 8
-#define EXT2_MF_BUSY 16
-
-/*
- * Ext2/linux mode flags. We define them here so that we don't need
- * to depend on the OS's sys/stat.h, since we may be compiling on a
- * non-Linux system.
- */
-#define LINUX_S_IFMT 00170000
-#define LINUX_S_IFSOCK 0140000
-#define LINUX_S_IFLNK 0120000
-#define LINUX_S_IFREG 0100000
-#define LINUX_S_IFBLK 0060000
-#define LINUX_S_IFDIR 0040000
-#define LINUX_S_IFCHR 0020000
-#define LINUX_S_IFIFO 0010000
-#define LINUX_S_ISUID 0004000
-#define LINUX_S_ISGID 0002000
-#define LINUX_S_ISVTX 0001000
-
-#define LINUX_S_IRWXU 00700
-#define LINUX_S_IRUSR 00400
-#define LINUX_S_IWUSR 00200
-#define LINUX_S_IXUSR 00100
-
-#define LINUX_S_IRWXG 00070
-#define LINUX_S_IRGRP 00040
-#define LINUX_S_IWGRP 00020
-#define LINUX_S_IXGRP 00010
-
-#define LINUX_S_IRWXO 00007
-#define LINUX_S_IROTH 00004
-#define LINUX_S_IWOTH 00002
-#define LINUX_S_IXOTH 00001
-
-#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
-#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
-#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
-#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
-#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
-#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
-#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
-
-/*
- * ext2 size of an inode
- */
-#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
-
-/*
- * ext2_icount_t abstraction
- */
-#define EXT2_ICOUNT_OPT_INCREMENT 0x01
-
-typedef struct ext2_icount *ext2_icount_t;
-
-/*
- * Flags for ext2fs_bmap
- */
-#define BMAP_ALLOC 0x0001
-#define BMAP_SET 0x0002
-
-/*
- * Flags for imager.c functions
- */
-#define IMAGER_FLAG_INODEMAP 1
-#define IMAGER_FLAG_SPARSEWRITE 2
-
-/*
- * For checking structure magic numbers...
- */
-
-#define EXT2_CHECK_MAGIC(struct, code) \
- if ((struct)->magic != (code)) return (code)
-
-
-/*
- * For ext2 compression support
- */
-#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
-#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
-
-/*
- * Features supported by this version of the library
- */
-#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
- EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
- EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
- EXT2_FEATURE_COMPAT_RESIZE_INODE|\
- EXT2_FEATURE_COMPAT_DIR_INDEX|\
- EXT2_FEATURE_COMPAT_EXT_ATTR)
-
-/* This #ifdef is temporary until compression is fully supported */
-#ifdef ENABLE_COMPRESSION
-#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
-/* If the below warning bugs you, then have
- `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
- environment at configure time. */
- #warning "Compression support is experimental"
-#endif
-#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
- EXT2_FEATURE_INCOMPAT_COMPRESSION|\
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
- EXT2_FEATURE_INCOMPAT_META_BG|\
- EXT3_FEATURE_INCOMPAT_RECOVER)
-#else
-#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
- EXT2_FEATURE_INCOMPAT_META_BG|\
- EXT3_FEATURE_INCOMPAT_RECOVER)
-#endif
-#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
-/*
- * function prototypes
- */
-
-/* alloc.c */
-extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
- ext2fs_inode_bitmap map, ext2_ino_t *ret);
-extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
- ext2fs_block_bitmap map, blk_t *ret);
-extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
- blk_t finish, int num,
- ext2fs_block_bitmap map,
- blk_t *ret);
-extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
- char *block_buf, blk_t *ret);
-
-/* alloc_sb.c */
-extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
- dgrp_t group,
- ext2fs_block_bitmap bmap);
-
-/* alloc_stats.c */
-void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
-void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
- int inuse, int isdir);
-void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
-
-/* alloc_tables.c */
-extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
-extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
- ext2fs_block_bitmap bmap);
-
-/* badblocks.c */
-extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
-extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
-extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
-extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
-extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
- ext2_u32_iterate *ret);
-extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
-extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
-extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
-extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
-
-extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
- int size);
-extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
- blk_t blk);
-extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
- blk_t blk);
-extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
-extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
-extern errcode_t
- ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
- ext2_badblocks_iterate *ret);
-extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
- blk_t *blk);
-extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
-extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
- ext2_badblocks_list *dest);
-extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
- ext2_badblocks_list bb2);
-extern int ext2fs_u32_list_count(ext2_u32_list bb);
-
-/* bb_compat */
-extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
-extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
-extern int badblocks_list_test(badblocks_list bb, blk_t blk);
-extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
- badblocks_iterate *ret);
-extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
-extern void badblocks_list_iterate_end(badblocks_iterate iter);
-extern void badblocks_list_free(badblocks_list bb);
-
-/* bb_inode.c */
-extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
- ext2_badblocks_list bb_list);
-
-/* bitmaps.c */
-extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
-extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
-extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
-extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
-extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
- __u32 end,
- __u32 real_end,
- const char *descr,
- ext2fs_generic_bitmap *ret);
-extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
- const char *descr,
- ext2fs_block_bitmap *ret);
-extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
- const char *descr,
- ext2fs_inode_bitmap *ret);
-extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
- ext2_ino_t end, ext2_ino_t *oend);
-extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
- blk_t end, blk_t *oend);
-extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
-extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
-extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
-extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
-
-/* block.c */
-extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
- ext2_ino_t ino,
- int flags,
- char *block_buf,
- int (*func)(ext2_filsys fs,
- blk_t *blocknr,
- int blockcnt,
- void *priv_data),
- void *priv_data);
-errcode_t ext2fs_block_iterate2(ext2_filsys fs,
- ext2_ino_t ino,
- int flags,
- char *block_buf,
- int (*func)(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_blk,
- int ref_offset,
- void *priv_data),
- void *priv_data);
-
-/* bmap.c */
-extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
- char *block_buf, int bmap_flags,
- blk_t block, blk_t *phys_blk);
-
-
-#if 0
-/* bmove.c */
-extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
- ext2fs_block_bitmap reserve,
- ext2fs_block_bitmap alloc_map,
- int flags);
-#endif
-
-/* check_desc.c */
-extern errcode_t ext2fs_check_desc(ext2_filsys fs);
-
-/* closefs.c */
-extern errcode_t ext2fs_close(ext2_filsys fs);
-extern errcode_t ext2fs_flush(ext2_filsys fs);
-extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
-extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
- dgrp_t group,
- blk_t *ret_super_blk,
- blk_t *ret_old_desc_blk,
- blk_t *ret_new_desc_blk,
- int *ret_meta_bg);
-extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
-
-/* cmp_bitmaps.c */
-extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
- ext2fs_block_bitmap bm2);
-extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
- ext2fs_inode_bitmap bm2);
-
-/* dblist.c */
-
-extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
-extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
-extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
- blk_t blk, int blockcnt);
-extern void ext2fs_dblist_sort(ext2_dblist dblist,
- int (*sortfunc)(const void *,
- const void *));
-extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
- int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
- void *priv_data),
- void *priv_data);
-extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
- blk_t blk, int blockcnt);
-extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
- ext2_dblist *dest);
-extern int ext2fs_dblist_count(ext2_dblist dblist);
-
-/* dblist_dir.c */
-extern errcode_t
- ext2fs_dblist_dir_iterate(ext2_dblist dblist,
- int flags,
- char *block_buf,
- int (*func)(ext2_ino_t dir,
- int entry,
- struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data),
- void *priv_data);
-
-/* dirblock.c */
-extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
- void *buf);
-extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
- void *buf, int flags);
-extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
- void *buf);
-extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
- void *buf, int flags);
-
-/* dirhash.c */
-extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
- const __u32 *seed,
- ext2_dirhash_t *ret_hash,
- ext2_dirhash_t *ret_minor_hash);
-
-
-/* dir_iterate.c */
-extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
- ext2_ino_t dir,
- int flags,
- char *block_buf,
- int (*func)(struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data),
- void *priv_data);
-extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
- ext2_ino_t dir,
- int flags,
- char *block_buf,
- int (*func)(ext2_ino_t dir,
- int entry,
- struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data),
- void *priv_data);
-
-/* dupfs.c */
-extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
-
-/* expanddir.c */
-extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
-
-/* ext_attr.c */
-extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
-extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
- void *buf);
-extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
- char *block_buf,
- int adjust, __u32 *newcount);
-
-/* fileio.c */
-extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
- int flags, ext2_file_t *ret);
-extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
- int flags, ext2_file_t *ret);
-extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
-extern errcode_t ext2fs_file_close(ext2_file_t file);
-extern errcode_t ext2fs_file_flush(ext2_file_t file);
-extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
- unsigned int wanted, unsigned int *got);
-extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
- unsigned int nbytes, unsigned int *written);
-extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
- int whence, __u64 *ret_pos);
-extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
- int whence, ext2_off_t *ret_pos);
-errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
-extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
-extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
-
-/* finddev.c */
-extern char *ext2fs_find_block_device(dev_t device);
-
-/* flushb.c */
-extern errcode_t ext2fs_sync_device(int fd, int flushb);
-
-/* freefs.c */
-extern void ext2fs_free(ext2_filsys fs);
-extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
-extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
-extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
-extern void ext2fs_free_dblist(ext2_dblist dblist);
-extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
-extern void ext2fs_u32_list_free(ext2_u32_list bb);
-
-/* getsize.c */
-extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
- blk_t *retblocks);
-
-/* getsectsize.c */
-errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
-
-/* imager.c */
-extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
-extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
-extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
-extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
-extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
-extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
-
-/* ind_block.c */
-errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
-errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
-
-/* initialize.c */
-extern errcode_t ext2fs_initialize(const char *name, int flags,
- struct ext2_super_block *param,
- io_manager manager, ext2_filsys *ret_fs);
-
-/* icount.c */
-extern void ext2fs_free_icount(ext2_icount_t icount);
-extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
- unsigned int size,
- ext2_icount_t hint, ext2_icount_t *ret);
-extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
- unsigned int size,
- ext2_icount_t *ret);
-extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
- __u16 *ret);
-extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
- __u16 *ret);
-extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
- __u16 *ret);
-extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
- __u16 count);
-extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
-errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
-
-/* inode.c */
-extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
-extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
- ext2_ino_t *ino,
- struct ext2_inode *inode,
- int bufsize);
-extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
- ext2_inode_scan *ret_scan);
-extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
-extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
- struct ext2_inode *inode);
-extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
- int group);
-extern void ext2fs_set_inode_callback
- (ext2_inode_scan scan,
- errcode_t (*done_group)(ext2_filsys fs,
- dgrp_t group,
- void * priv_data),
- void *done_group_data);
-extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
- int clear_flags);
-extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode,
- int bufsize);
-extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode);
-extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode,
- int bufsize);
-extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode);
-extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode);
-extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
-extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
-
-/* inode_io.c */
-extern io_manager inode_io_manager;
-extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
- char **name);
-extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
- char **name);
-
-/* ismounted.c */
-extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
-extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
- char *mtpt, int mtlen);
-
-/* namei.c */
-extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
- int namelen, char *buf, ext2_ino_t *inode);
-extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- const char *name, ext2_ino_t *inode);
-errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- const char *name, ext2_ino_t *inode);
-extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- ext2_ino_t inode, ext2_ino_t *res_inode);
-
-/* native.c */
-int ext2fs_native_flag(void);
-
-/* newdir.c */
-extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
- ext2_ino_t parent_ino, char **block);
-
-/* mkdir.c */
-extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
- const char *name);
-
-/* mkjournal.c */
-extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
- __u32 size, int flags,
- char **ret_jsb);
-extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
- ext2_filsys journal_dev);
-extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
- int flags);
-
-/* openfs.c */
-extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
- unsigned int block_size, io_manager manager,
- ext2_filsys *ret_fs);
-extern errcode_t ext2fs_open2(const char *name, const char *io_options,
- int flags, int superblock,
- unsigned int block_size, io_manager manager,
- ext2_filsys *ret_fs);
-extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
- dgrp_t i);
-errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
-errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
-errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
-
-/* get_pathname.c */
-extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
- char **name);
-
-/* link.c */
-errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
- ext2_ino_t ino, int flags);
-errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
- ext2_ino_t ino, int flags);
-
-/* read_bb.c */
-extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
- ext2_badblocks_list *bb_list);
-
-/* read_bb_file.c */
-extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
- ext2_badblocks_list *bb_list,
- void *priv_data,
- void (*invalid)(ext2_filsys fs,
- blk_t blk,
- char *badstr,
- void *priv_data));
-extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
- ext2_badblocks_list *bb_list,
- void (*invalid)(ext2_filsys fs,
- blk_t blk));
-
-/* res_gdt.c */
-extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
-
-/* rs_bitmap.c */
-extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
- __u32 new_real_end,
- ext2fs_generic_bitmap bmap);
-extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
- ext2fs_inode_bitmap bmap);
-extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
- ext2fs_block_bitmap bmap);
-extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
- ext2fs_generic_bitmap *dest);
-
-/* swapfs.c */
-extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
- int has_header);
-extern void ext2fs_swap_super(struct ext2_super_block * super);
-extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
-extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
- struct ext2_inode_large *f, int hostorder,
- int bufsize);
-extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
- struct ext2_inode *f, int hostorder);
-
-/* valid_blk.c */
-extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
-
-/* version.c */
-extern int ext2fs_parse_version_string(const char *ver_string);
-extern int ext2fs_get_library_version(const char **ver_string,
- const char **date_string);
-
-/* write_bb_file.c */
-extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
- unsigned int flags,
- FILE *f);
-
-
-/* inline functions */
-extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
-extern errcode_t ext2fs_free_mem(void *ptr);
-extern errcode_t ext2fs_resize_mem(unsigned long old_size,
- unsigned long size, void *ptr);
-extern void ext2fs_mark_super_dirty(ext2_filsys fs);
-extern void ext2fs_mark_changed(ext2_filsys fs);
-extern int ext2fs_test_changed(ext2_filsys fs);
-extern void ext2fs_mark_valid(ext2_filsys fs);
-extern void ext2fs_unmark_valid(ext2_filsys fs);
-extern int ext2fs_test_valid(ext2_filsys fs);
-extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
-extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
-extern int ext2fs_test_ib_dirty(ext2_filsys fs);
-extern int ext2fs_test_bb_dirty(ext2_filsys fs);
-extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
-extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
-extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
- struct ext2_inode *inode);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _EXT2FS_EXT2FS_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ext2fsP.h --- private header file for ext2 library
- *
- * Copyright (C) 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include "ext2fs.h"
-
-/*
- * Badblocks list
- */
-struct ext2_struct_u32_list {
- int magic;
- int num;
- int size;
- __u32 *list;
- int badblocks_flags;
-};
-
-struct ext2_struct_u32_iterate {
- int magic;
- ext2_u32_list bb;
- int ptr;
-};
-
-
-/*
- * Directory block iterator definition
- */
-struct ext2_struct_dblist {
- int magic;
- ext2_filsys fs;
- ext2_ino_t size;
- ext2_ino_t count;
- int sorted;
- struct ext2_db_entry * list;
-};
-
-/*
- * For directory iterators
- */
-struct dir_context {
- ext2_ino_t dir;
- int flags;
- char *buf;
- int (*func)(ext2_ino_t dir,
- int entry,
- struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data);
- void *priv_data;
- errcode_t errcode;
-};
-
-/*
- * Inode cache structure
- */
-struct ext2_inode_cache {
- void * buffer;
- blk_t buffer_blk;
- int cache_last;
- int cache_size;
- int refcount;
- struct ext2_inode_cache_ent *cache;
-};
-
-struct ext2_inode_cache_ent {
- ext2_ino_t ino;
- struct ext2_inode inode;
-};
-
-/* Function prototypes */
-
-extern int ext2fs_process_dir_block(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block,
- int ref_offset,
- void *priv_data);
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ext2fs.h --- ext2fs
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include "ext2fs.h"
-#include "bitops.h"
-#include <string.h>
-
-/*
- * Allocate memory
- */
-errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
-{
- void **pp = (void **)ptr;
-
- *pp = malloc(size);
- if (!*pp)
- return EXT2_ET_NO_MEMORY;
- return 0;
-}
-
-/*
- * Free memory
- */
-errcode_t ext2fs_free_mem(void *ptr)
-{
- void **pp = (void **)ptr;
-
- free(*pp);
- *pp = 0;
- return 0;
-}
-
-/*
- * Resize memory
- */
-errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
- unsigned long size, void *ptr)
-{
- void *p;
-
- /* Use "memcpy" for pointer assignments here to avoid problems
- * with C99 strict type aliasing rules. */
- memcpy(&p, ptr, sizeof (p));
- p = realloc(p, size);
- if (!p)
- return EXT2_ET_NO_MEMORY;
- memcpy(ptr, &p, sizeof (p));
- return 0;
-}
-
-/*
- * Mark a filesystem superblock as dirty
- */
-void ext2fs_mark_super_dirty(ext2_filsys fs)
-{
- fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
-}
-
-/*
- * Mark a filesystem as changed
- */
-void ext2fs_mark_changed(ext2_filsys fs)
-{
- fs->flags |= EXT2_FLAG_CHANGED;
-}
-
-/*
- * Check to see if a filesystem has changed
- */
-int ext2fs_test_changed(ext2_filsys fs)
-{
- return (fs->flags & EXT2_FLAG_CHANGED);
-}
-
-/*
- * Mark a filesystem as valid
- */
-void ext2fs_mark_valid(ext2_filsys fs)
-{
- fs->flags |= EXT2_FLAG_VALID;
-}
-
-/*
- * Mark a filesystem as NOT valid
- */
-void ext2fs_unmark_valid(ext2_filsys fs)
-{
- fs->flags &= ~EXT2_FLAG_VALID;
-}
-
-/*
- * Check to see if a filesystem is valid
- */
-int ext2fs_test_valid(ext2_filsys fs)
-{
- return (fs->flags & EXT2_FLAG_VALID);
-}
-
-/*
- * Mark the inode bitmap as dirty
- */
-void ext2fs_mark_ib_dirty(ext2_filsys fs)
-{
- fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
-}
-
-/*
- * Mark the block bitmap as dirty
- */
-void ext2fs_mark_bb_dirty(ext2_filsys fs)
-{
- fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
-}
-
-/*
- * Check to see if a filesystem's inode bitmap is dirty
- */
-int ext2fs_test_ib_dirty(ext2_filsys fs)
-{
- return (fs->flags & EXT2_FLAG_IB_DIRTY);
-}
-
-/*
- * Check to see if a filesystem's block bitmap is dirty
- */
-int ext2fs_test_bb_dirty(ext2_filsys fs)
-{
- return (fs->flags & EXT2_FLAG_BB_DIRTY);
-}
-
-/*
- * Return the group # of a block
- */
-int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
-{
- return (blk - fs->super->s_first_data_block) /
- fs->super->s_blocks_per_group;
-}
-
-/*
- * Return the group # of an inode number
- */
-int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
-{
- return (ino - 1) / fs->super->s_inodes_per_group;
-}
-
-blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
- struct ext2_inode *inode)
-{
- return inode->i_blocks -
- (inode->i_file_acl ? fs->blocksize >> 9 : 0);
-}
-
-
-
-
-
-
-
-
-
-__u16 ext2fs_swab16(__u16 val)
-{
- return (val >> 8) | (val << 8);
-}
-
-__u32 ext2fs_swab32(__u32 val)
-{
- return ((val>>24) | ((val>>8)&0xFF00) |
- ((val<<8)&0xFF0000) | (val<<24));
-}
-
-int ext2fs_test_generic_bitmap(ext2fs_generic_bitmap bitmap,
- blk_t bitno);
-
-int ext2fs_test_generic_bitmap(ext2fs_generic_bitmap bitmap,
- blk_t bitno)
-{
- if ((bitno < bitmap->start) || (bitno > bitmap->end)) {
- ext2fs_warn_bitmap2(bitmap, EXT2FS_TEST_ERROR, bitno);
- return 0;
- }
- return ext2fs_test_bit(bitno - bitmap->start, bitmap->bitmap);
-}
-
-int ext2fs_mark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block)
-{
- return ext2fs_mark_generic_bitmap((ext2fs_generic_bitmap)
- bitmap,
- block);
-}
-
-int ext2fs_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block)
-{
- return ext2fs_unmark_generic_bitmap((ext2fs_generic_bitmap) bitmap,
- block);
-}
-
-int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block)
-{
- return ext2fs_test_generic_bitmap((ext2fs_generic_bitmap) bitmap,
- block);
-}
-
-int ext2fs_mark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode)
-{
- return ext2fs_mark_generic_bitmap((ext2fs_generic_bitmap) bitmap,
- inode);
-}
-
-int ext2fs_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode)
-{
- return ext2fs_unmark_generic_bitmap((ext2fs_generic_bitmap) bitmap,
- inode);
-}
-
-int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode)
-{
- return ext2fs_test_generic_bitmap((ext2fs_generic_bitmap) bitmap,
- inode);
-}
-
-void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block)
-{
- ext2fs_set_bit(block - bitmap->start, bitmap->bitmap);
-}
-
-void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block)
-{
- ext2fs_clear_bit(block - bitmap->start, bitmap->bitmap);
-}
-
-int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap,
- blk_t block)
-{
- return ext2fs_test_bit(block - bitmap->start, bitmap->bitmap);
-}
-
-void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode)
-{
- ext2fs_set_bit(inode - bitmap->start, bitmap->bitmap);
-}
-
-void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode)
-{
- ext2fs_clear_bit(inode - bitmap->start, bitmap->bitmap);
-}
-
-int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap,
- ext2_ino_t inode)
-{
- return ext2fs_test_bit(inode - bitmap->start, bitmap->bitmap);
-}
-
-blk_t ext2fs_get_block_bitmap_start(ext2fs_block_bitmap bitmap)
-{
- return bitmap->start;
-}
-
-ext2_ino_t ext2fs_get_inode_bitmap_start(ext2fs_inode_bitmap bitmap)
-{
- return bitmap->start;
-}
-
-blk_t ext2fs_get_block_bitmap_end(ext2fs_block_bitmap bitmap)
-{
- return bitmap->end;
-}
-
-ext2_ino_t ext2fs_get_inode_bitmap_end(ext2fs_inode_bitmap bitmap)
-{
- return bitmap->end;
-}
-
-int ext2fs_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num)
-{
- int i;
-
- if ((block < bitmap->start) || (block+num-1 > bitmap->end)) {
- ext2fs_warn_bitmap(EXT2_ET_BAD_BLOCK_TEST,
- block, bitmap->description);
- return 0;
- }
- for (i=0; i < num; i++) {
- if (ext2fs_fast_test_block_bitmap(bitmap, block+i))
- return 0;
- }
- return 1;
-}
-
-int ext2fs_fast_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num)
-{
- int i;
-
- for (i=0; i < num; i++) {
- if (ext2fs_fast_test_block_bitmap(bitmap, block+i))
- return 0;
- }
- return 1;
-}
-
-void ext2fs_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num)
-{
- int i;
-
- if ((block < bitmap->start) || (block+num-1 > bitmap->end)) {
- ext2fs_warn_bitmap(EXT2_ET_BAD_BLOCK_MARK, block,
- bitmap->description);
- return;
- }
- for (i=0; i < num; i++)
- ext2fs_set_bit(block + i - bitmap->start, bitmap->bitmap);
-}
-
-void ext2fs_fast_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num)
-{
- int i;
-
- for (i=0; i < num; i++)
- ext2fs_set_bit(block + i - bitmap->start, bitmap->bitmap);
-}
-
-void ext2fs_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num)
-{
- int i;
-
- if ((block < bitmap->start) || (block+num-1 > bitmap->end)) {
- ext2fs_warn_bitmap(EXT2_ET_BAD_BLOCK_UNMARK, block,
- bitmap->description);
- return;
- }
- for (i=0; i < num; i++)
- ext2fs_clear_bit(block + i - bitmap->start, bitmap->bitmap);
-}
-
-void ext2fs_fast_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
- blk_t block, int num)
-{
- int i;
- for (i=0; i < num; i++)
- ext2fs_clear_bit(block + i - bitmap->start, bitmap->bitmap);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ext_attr.c --- extended attribute blocks
- *
- * Copyright (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
- *
- * Copyright (C) 2002 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2_ext_attr.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf)
-{
- errcode_t retval;
-
- retval = io_channel_read_blk(fs->io, block, 1, buf);
- if (retval)
- return retval;
-#if BB_BIG_ENDIAN
- if ((fs->flags & (EXT2_FLAG_SWAP_BYTES|
- EXT2_FLAG_SWAP_BYTES_READ)) != 0)
- ext2fs_swap_ext_attr(buf, buf, fs->blocksize, 1);
-#endif
- return 0;
-}
-
-errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *inbuf)
-{
- errcode_t retval;
- char *write_buf;
- char *buf = NULL;
-
- if (BB_BIG_ENDIAN && ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))) {
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
- write_buf = buf;
- ext2fs_swap_ext_attr(buf, inbuf, fs->blocksize, 1);
- } else
- write_buf = (char *) inbuf;
- retval = io_channel_write_blk(fs->io, block, 1, write_buf);
- if (buf)
- ext2fs_free_mem(&buf);
- if (!retval)
- ext2fs_mark_changed(fs);
- return retval;
-}
-
-/*
- * This function adjusts the reference count of the EA block.
- */
-errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
- char *block_buf, int adjust,
- __u32 *newcount)
-{
- errcode_t retval;
- struct ext2_ext_attr_header *header;
- char *buf = 0;
-
- if ((blk >= fs->super->s_blocks_count) ||
- (blk < fs->super->s_first_data_block))
- return EXT2_ET_BAD_EA_BLOCK_NUM;
-
- if (!block_buf) {
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
- block_buf = buf;
- }
-
- retval = ext2fs_read_ext_attr(fs, blk, block_buf);
- if (retval)
- goto errout;
-
- header = (struct ext2_ext_attr_header *) block_buf;
- header->h_refcount += adjust;
- if (newcount)
- *newcount = header->h_refcount;
-
- retval = ext2fs_write_ext_attr(fs, blk, block_buf);
- if (retval)
- goto errout;
-
-errout:
- if (buf)
- ext2fs_free_mem(&buf);
- return retval;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * fileio.c --- Simple file I/O routines
- *
- * Copyright (C) 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct ext2_file {
- errcode_t magic;
- ext2_filsys fs;
- ext2_ino_t ino;
- struct ext2_inode inode;
- int flags;
- __u64 pos;
- blk_t blockno;
- blk_t physblock;
- char *buf;
-};
-
-#define BMAP_BUFFER (file->buf + fs->blocksize)
-
-errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
- int flags, ext2_file_t *ret)
-{
- ext2_file_t file;
- errcode_t retval;
-
- /*
- * Don't let caller create or open a file for writing if the
- * filesystem is read-only.
- */
- if ((flags & (EXT2_FILE_WRITE | EXT2_FILE_CREATE)) &&
- !(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
-
- retval = ext2fs_get_mem(sizeof(struct ext2_file), &file);
- if (retval)
- return retval;
-
- memset(file, 0, sizeof(struct ext2_file));
- file->magic = EXT2_ET_MAGIC_EXT2_FILE;
- file->fs = fs;
- file->ino = ino;
- file->flags = flags & EXT2_FILE_MASK;
-
- if (inode) {
- memcpy(&file->inode, inode, sizeof(struct ext2_inode));
- } else {
- retval = ext2fs_read_inode(fs, ino, &file->inode);
- if (retval)
- goto fail;
- }
-
- retval = ext2fs_get_mem(fs->blocksize * 3, &file->buf);
- if (retval)
- goto fail;
-
- *ret = file;
- return 0;
-
-fail:
- ext2fs_free_mem(&file->buf);
- ext2fs_free_mem(&file);
- return retval;
-}
-
-errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
- int flags, ext2_file_t *ret)
-{
- return ext2fs_file_open2(fs, ino, NULL, flags, ret);
-}
-
-/*
- * This function returns the filesystem handle of a file from the structure
- */
-ext2_filsys ext2fs_file_get_fs(ext2_file_t file)
-{
- if (file->magic != EXT2_ET_MAGIC_EXT2_FILE)
- return 0;
- return file->fs;
-}
-
-/*
- * This function flushes the dirty block buffer out to disk if
- * necessary.
- */
-errcode_t ext2fs_file_flush(ext2_file_t file)
-{
- errcode_t retval;
- ext2_filsys fs;
-
- EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
- fs = file->fs;
-
- if (!(file->flags & EXT2_FILE_BUF_VALID) ||
- !(file->flags & EXT2_FILE_BUF_DIRTY))
- return 0;
-
- /*
- * OK, the physical block hasn't been allocated yet.
- * Allocate it.
- */
- if (!file->physblock) {
- retval = ext2fs_bmap(fs, file->ino, &file->inode,
- BMAP_BUFFER, file->ino ? BMAP_ALLOC : 0,
- file->blockno, &file->physblock);
- if (retval)
- return retval;
- }
-
- retval = io_channel_write_blk(fs->io, file->physblock,
- 1, file->buf);
- if (retval)
- return retval;
-
- file->flags &= ~EXT2_FILE_BUF_DIRTY;
-
- return retval;
-}
-
-/*
- * This function synchronizes the file's block buffer and the current
- * file position, possibly invalidating block buffer if necessary
- */
-static errcode_t sync_buffer_position(ext2_file_t file)
-{
- blk_t b;
- errcode_t retval;
-
- b = file->pos / file->fs->blocksize;
- if (b != file->blockno) {
- retval = ext2fs_file_flush(file);
- if (retval)
- return retval;
- file->flags &= ~EXT2_FILE_BUF_VALID;
- }
- file->blockno = b;
- return 0;
-}
-
-/*
- * This function loads the file's block buffer with valid data from
- * the disk as necessary.
- *
- * If dontfill is true, then skip initializing the buffer since we're
- * going to be replacing its entire contents anyway. If set, then the
- * function basically only sets file->physblock and EXT2_FILE_BUF_VALID
- */
-#define DONTFILL 1
-static errcode_t load_buffer(ext2_file_t file, int dontfill)
-{
- ext2_filsys fs = file->fs;
- errcode_t retval;
-
- if (!(file->flags & EXT2_FILE_BUF_VALID)) {
- retval = ext2fs_bmap(fs, file->ino, &file->inode,
- BMAP_BUFFER, 0, file->blockno,
- &file->physblock);
- if (retval)
- return retval;
- if (!dontfill) {
- if (file->physblock) {
- retval = io_channel_read_blk(fs->io,
- file->physblock,
- 1, file->buf);
- if (retval)
- return retval;
- } else
- memset(file->buf, 0, fs->blocksize);
- }
- file->flags |= EXT2_FILE_BUF_VALID;
- }
- return 0;
-}
-
-
-errcode_t ext2fs_file_close(ext2_file_t file)
-{
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
-
- retval = ext2fs_file_flush(file);
-
- ext2fs_free_mem(&file->buf);
- ext2fs_free_mem(&file);
-
- return retval;
-}
-
-
-errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
- unsigned int wanted, unsigned int *got)
-{
- ext2_filsys fs;
- errcode_t retval = 0;
- unsigned int start, c, count = 0;
- __u64 left;
- char *ptr = (char *) buf;
-
- EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
- fs = file->fs;
-
- while ((file->pos < EXT2_I_SIZE(&file->inode)) && (wanted > 0)) {
- retval = sync_buffer_position(file);
- if (retval)
- goto fail;
- retval = load_buffer(file, 0);
- if (retval)
- goto fail;
-
- start = file->pos % fs->blocksize;
- c = fs->blocksize - start;
- if (c > wanted)
- c = wanted;
- left = EXT2_I_SIZE(&file->inode) - file->pos ;
- if (c > left)
- c = left;
-
- memcpy(ptr, file->buf+start, c);
- file->pos += c;
- ptr += c;
- count += c;
- wanted -= c;
- }
-
-fail:
- if (got)
- *got = count;
- return retval;
-}
-
-
-errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
- unsigned int nbytes, unsigned int *written)
-{
- ext2_filsys fs;
- errcode_t retval = 0;
- unsigned int start, c, count = 0;
- const char *ptr = (const char *) buf;
-
- EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
- fs = file->fs;
-
- if (!(file->flags & EXT2_FILE_WRITE))
- return EXT2_ET_FILE_RO;
-
- while (nbytes > 0) {
- retval = sync_buffer_position(file);
- if (retval)
- goto fail;
-
- start = file->pos % fs->blocksize;
- c = fs->blocksize - start;
- if (c > nbytes)
- c = nbytes;
-
- /*
- * We only need to do a read-modify-update cycle if
- * we're doing a partial write.
- */
- retval = load_buffer(file, (c == fs->blocksize));
- if (retval)
- goto fail;
-
- file->flags |= EXT2_FILE_BUF_DIRTY;
- memcpy(file->buf+start, ptr, c);
- file->pos += c;
- ptr += c;
- count += c;
- nbytes -= c;
- }
-
-fail:
- if (written)
- *written = count;
- return retval;
-}
-
-errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
- int whence, __u64 *ret_pos)
-{
- EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
-
- if (whence == EXT2_SEEK_SET)
- file->pos = offset;
- else if (whence == EXT2_SEEK_CUR)
- file->pos += offset;
- else if (whence == EXT2_SEEK_END)
- file->pos = EXT2_I_SIZE(&file->inode) + offset;
- else
- return EXT2_ET_INVALID_ARGUMENT;
-
- if (ret_pos)
- *ret_pos = file->pos;
-
- return 0;
-}
-
-errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
- int whence, ext2_off_t *ret_pos)
-{
- __u64 loffset, ret_loffset;
- errcode_t retval;
-
- loffset = offset;
- retval = ext2fs_file_llseek(file, loffset, whence, &ret_loffset);
- if (ret_pos)
- *ret_pos = (ext2_off_t) ret_loffset;
- return retval;
-}
-
-
-/*
- * This function returns the size of the file, according to the inode
- */
-errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size)
-{
- if (file->magic != EXT2_ET_MAGIC_EXT2_FILE)
- return EXT2_ET_MAGIC_EXT2_FILE;
- *ret_size = EXT2_I_SIZE(&file->inode);
- return 0;
-}
-
-/*
- * This function returns the size of the file, according to the inode
- */
-ext2_off_t ext2fs_file_get_size(ext2_file_t file)
-{
- __u64 size;
-
- if (ext2fs_file_get_lsize(file, &size))
- return 0;
- if ((size >> 32) != 0)
- return 0;
- return size;
-}
-
-/*
- * This function sets the size of the file, truncating it if necessary
- *
- * XXX still need to call truncate
- */
-errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size)
-{
- errcode_t retval;
- EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
-
- file->inode.i_size = size;
- file->inode.i_size_high = 0;
- if (file->ino) {
- retval = ext2fs_write_inode(file->fs, file->ino, &file->inode);
- if (retval)
- return retval;
- }
-
- /*
- * XXX truncate inode if necessary
- */
-
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * finddev.c -- this routine attempts to find a particular device in
- * /dev
- *
- * Copyright (C) 2000 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#include <dirent.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_SYS_MKDEV_H
-#include <sys/mkdev.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct dir_list {
- char *name;
- struct dir_list *next;
-};
-
-/*
- * This function adds an entry to the directory list
- */
-static void add_to_dirlist(const char *name, struct dir_list **list)
-{
- struct dir_list *dp;
-
- dp = xmalloc(sizeof(struct dir_list));
- dp->name = xmalloc(strlen(name)+1);
- strcpy(dp->name, name);
- dp->next = *list;
- *list = dp;
-}
-
-/*
- * This function frees a directory list
- */
-static void free_dirlist(struct dir_list **list)
-{
- struct dir_list *dp, *next;
-
- for (dp = *list; dp; dp = next) {
- next = dp->next;
- free(dp->name);
- free(dp);
- }
- *list = 0;
-}
-
-static int scan_dir(char *dir_name, dev_t device, struct dir_list **list,
- char **ret_path)
-{
- DIR *dir;
- struct dirent *dp;
- char path[1024], *cp;
- int dirlen;
- struct stat st;
-
- dirlen = strlen(dir_name);
- if ((dir = opendir(dir_name)) == NULL)
- return errno;
- dp = readdir(dir);
- while (dp) {
- if (dirlen + strlen(dp->d_name) + 2 >= sizeof(path))
- goto skip_to_next;
- if (dp->d_name[0] == '.' &&
- ((dp->d_name[1] == 0) ||
- ((dp->d_name[1] == '.') && (dp->d_name[2] == 0))))
- goto skip_to_next;
- sprintf(path, "%s/%s", dir_name, dp->d_name);
- if (stat(path, &st) < 0)
- goto skip_to_next;
- if (S_ISDIR(st.st_mode))
- add_to_dirlist(path, list);
- if (S_ISBLK(st.st_mode) && st.st_rdev == device) {
- cp = xmalloc(strlen(path)+1);
- strcpy(cp, path);
- *ret_path = cp;
- goto success;
- }
- skip_to_next:
- dp = readdir(dir);
- }
-success:
- closedir(dir);
- return 0;
-}
-
-/*
- * This function finds the pathname to a block device with a given
- * device number. It returns a pointer to allocated memory to the
- * pathname on success, and NULL on failure.
- */
-char *ext2fs_find_block_device(dev_t device)
-{
- struct dir_list *list = 0, *new_list = 0;
- struct dir_list *current;
- char *ret_path = 0;
-
- /*
- * Add the starting directories to search...
- */
- add_to_dirlist("/devices", &list);
- add_to_dirlist("/devfs", &list);
- add_to_dirlist("/dev", &list);
-
- while (list) {
- current = list;
- list = list->next;
-#ifdef DEBUG
- printf("Scanning directory %s\n", current->name);
-#endif
- scan_dir(current->name, device, &new_list, &ret_path);
- free(current->name);
- free(current);
- if (ret_path)
- break;
- /*
- * If we're done checking at this level, descend to
- * the next level of subdirectories. (breadth-first)
- */
- if (list == 0) {
- list = new_list;
- new_list = 0;
- }
- }
- free_dirlist(&list);
- free_dirlist(&new_list);
- return ret_path;
-}
-
-
-#ifdef DEBUG
-int main(int argc, char** argv)
-{
- char *devname, *tmp;
- int major, minor;
- dev_t device;
- const char *errmsg = "Cannot parse %s: %s\n";
-
- if ((argc != 2) && (argc != 3)) {
- fprintf(stderr, "Usage: %s device_number\n", argv[0]);
- fprintf(stderr, "\t: %s major minor\n", argv[0]);
- exit(1);
- }
- if (argc == 2) {
- device = strtoul(argv[1], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "device number", argv[1]);
- exit(1);
- }
- } else {
- major = strtoul(argv[1], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "major number", argv[1]);
- exit(1);
- }
- minor = strtoul(argv[2], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "minor number", argv[2]);
- exit(1);
- }
- device = makedev(major, minor);
- printf("Looking for device 0x%04x (%d:%d)\n", device,
- major, minor);
- }
- devname = ext2fs_find_block_device(device);
- if (devname) {
- printf("Found device! %s\n", devname);
- free(devname);
- } else {
- printf("Cannot find device.\n");
- }
- return 0;
-}
-
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * flushb.c --- Hides system-dependent information for both syncing a
- * device to disk and to flush any buffers from disk cache.
- *
- * Copyright (C) 2000 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#if HAVE_SYS_MOUNT_H
-#include <sys/param.h>
-#include <sys/mount.h> /* This may define BLKFLSBUF */
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * For Linux, define BLKFLSBUF and FDFLUSH if necessary, since
- * not all portable header file does so for us. This really should be
- * fixed in the glibc header files. (Recent glibcs appear to define
- * BLKFLSBUF in sys/mount.h, but FDFLUSH still doesn't seem to be
- * defined anywhere portable.) Until then....
- */
-#ifdef __linux__
-#ifndef BLKFLSBUF
-#define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */
-#endif
-#ifndef FDFLUSH
-#define FDFLUSH _IO(2,0x4b) /* flush floppy disk */
-#endif
-#endif
-
-/*
- * This function will sync a device/file, and optionally attempt to
- * flush the buffer cache. The latter is basically only useful for
- * system benchmarks and for torturing systems in burn-in tests. :)
- */
-errcode_t ext2fs_sync_device(int fd, int flushb)
-{
- /*
- * We always sync the device in case we're running on old
- * kernels for which we can lose data if we don't. (There
- * still is a race condition for those kernels, but this
- * reduces it greatly.)
- */
- if (fsync (fd) == -1)
- return errno;
-
- if (flushb) {
-
-#ifdef BLKFLSBUF
- if (ioctl (fd, BLKFLSBUF, 0) == 0)
- return 0;
-#else
-#ifdef __GNUC__
-# warning BLKFLSBUF not defined
-#endif /* __GNUC__ */
-#endif
-#ifdef FDFLUSH
- ioctl (fd, FDFLUSH, 0); /* In case this is a floppy */
-#else
-#ifdef __GNUC__
-# warning FDFLUSH not defined
-#endif /* __GNUC__ */
-#endif
- }
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * freefs.c --- free an ext2 filesystem
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
-
-void ext2fs_free(ext2_filsys fs)
-{
- if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
- return;
- if (fs->image_io != fs->io) {
- if (fs->image_io)
- io_channel_close(fs->image_io);
- }
- if (fs->io) {
- io_channel_close(fs->io);
- }
- ext2fs_free_mem(&fs->device_name);
- ext2fs_free_mem(&fs->super);
- ext2fs_free_mem(&fs->orig_super);
- ext2fs_free_mem(&fs->group_desc);
- ext2fs_free_block_bitmap(fs->block_map);
- ext2fs_free_inode_bitmap(fs->inode_map);
-
- ext2fs_badblocks_list_free(fs->badblocks);
- fs->badblocks = 0;
-
- ext2fs_free_dblist(fs->dblist);
-
- if (fs->icache)
- ext2fs_free_inode_cache(fs->icache);
-
- fs->magic = 0;
-
- ext2fs_free_mem(&fs);
-}
-
-void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap)
-{
- if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_GENERIC_BITMAP))
- return;
-
- bitmap->magic = 0;
- ext2fs_free_mem(&bitmap->description);
- ext2fs_free_mem(&bitmap->bitmap);
- ext2fs_free_mem(&bitmap);
-}
-
-void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap)
-{
- if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_INODE_BITMAP))
- return;
-
- bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
- ext2fs_free_generic_bitmap(bitmap);
-}
-
-void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap)
-{
- if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_BLOCK_BITMAP))
- return;
-
- bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
- ext2fs_free_generic_bitmap(bitmap);
-}
-
-/*
- * Free the inode cache structure
- */
-static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache)
-{
- if (--icache->refcount)
- return;
- ext2fs_free_mem(&icache->buffer);
- ext2fs_free_mem(&icache->cache);
- icache->buffer_blk = 0;
- ext2fs_free_mem(&icache);
-}
-
-/*
- * This procedure frees a badblocks list.
- */
-void ext2fs_u32_list_free(ext2_u32_list bb)
-{
- if (!bb || bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
- return;
-
- ext2fs_free_mem(&bb->list);
- ext2fs_free_mem(&bb);
-}
-
-void ext2fs_badblocks_list_free(ext2_badblocks_list bb)
-{
- ext2fs_u32_list_free((ext2_u32_list) bb);
-}
-
-
-/*
- * Free a directory block list
- */
-void ext2fs_free_dblist(ext2_dblist dblist)
-{
- if (!dblist || (dblist->magic != EXT2_ET_MAGIC_DBLIST))
- return;
-
- ext2fs_free_mem(&dblist->list);
- if (dblist->fs && dblist->fs->dblist == dblist)
- dblist->fs->dblist = 0;
- dblist->magic = 0;
- ext2fs_free_mem(&dblist);
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * gen_bitmap.c --- Generic bitmap routines that used to be inlined.
- *
- * Copyright (C) 2001 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap,
- __u32 bitno)
-{
- if ((bitno < bitmap->start) || (bitno > bitmap->end)) {
- ext2fs_warn_bitmap2(bitmap, EXT2FS_MARK_ERROR, bitno);
- return 0;
- }
- return ext2fs_set_bit(bitno - bitmap->start, bitmap->bitmap);
-}
-
-int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap,
- blk_t bitno)
-{
- if ((bitno < bitmap->start) || (bitno > bitmap->end)) {
- ext2fs_warn_bitmap2(bitmap, EXT2FS_UNMARK_ERROR, bitno);
- return 0;
- }
- return ext2fs_clear_bit(bitno - bitmap->start, bitmap->bitmap);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * get_pathname.c --- do directry/inode -> name translation
- *
- * Copyright (C) 1993, 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- * ext2fs_get_pathname(fs, dir, ino, name)
- *
- * This function translates takes two inode numbers into a
- * string, placing the result in <name>. <dir> is the containing
- * directory inode, and <ino> is the inode number itself. If
- * <ino> is zero, then ext2fs_get_pathname will return pathname
- * of the the directory <dir>.
- *
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct get_pathname_struct {
- ext2_ino_t search_ino;
- ext2_ino_t parent;
- char *name;
- errcode_t errcode;
-};
-
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-static int get_pathname_proc(struct ext2_dir_entry *dirent,
- int offset EXT2FS_ATTR((unused)),
- int blocksize EXT2FS_ATTR((unused)),
- char *buf EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct get_pathname_struct *gp;
- errcode_t retval;
-
- gp = (struct get_pathname_struct *) priv_data;
-
- if (((dirent->name_len & 0xFF) == 2) &&
- !strncmp(dirent->name, "..", 2))
- gp->parent = dirent->inode;
- if (dirent->inode == gp->search_ino) {
- retval = ext2fs_get_mem((dirent->name_len & 0xFF) + 1,
- &gp->name);
- if (retval) {
- gp->errcode = retval;
- return DIRENT_ABORT;
- }
- strncpy(gp->name, dirent->name, (dirent->name_len & 0xFF));
- gp->name[dirent->name_len & 0xFF] = '\0';
- return DIRENT_ABORT;
- }
- return 0;
-}
-
-static errcode_t ext2fs_get_pathname_int(ext2_filsys fs, ext2_ino_t dir,
- ext2_ino_t ino, int maxdepth,
- char *buf, char **name)
-{
- struct get_pathname_struct gp;
- char *parent_name, *ret;
- errcode_t retval;
-
- if (dir == ino) {
- retval = ext2fs_get_mem(2, name);
- if (retval)
- return retval;
- strcpy(*name, (dir == EXT2_ROOT_INO) ? "/" : ".");
- return 0;
- }
-
- if (!dir || (maxdepth < 0)) {
- retval = ext2fs_get_mem(4, name);
- if (retval)
- return retval;
- strcpy(*name, "...");
- return 0;
- }
-
- gp.search_ino = ino;
- gp.parent = 0;
- gp.name = 0;
- gp.errcode = 0;
-
- retval = ext2fs_dir_iterate(fs, dir, 0, buf, get_pathname_proc, &gp);
- if (retval)
- goto cleanup;
- if (gp.errcode) {
- retval = gp.errcode;
- goto cleanup;
- }
-
- retval = ext2fs_get_pathname_int(fs, gp.parent, dir, maxdepth-1,
- buf, &parent_name);
- if (retval)
- goto cleanup;
- if (!ino) {
- *name = parent_name;
- return 0;
- }
-
- if (gp.name)
- retval = ext2fs_get_mem(strlen(parent_name)+strlen(gp.name)+2,
- &ret);
- else
- retval = ext2fs_get_mem(strlen(parent_name)+5, &ret);
- if (retval)
- goto cleanup;
-
- ret[0] = 0;
- if (parent_name[1])
- strcat(ret, parent_name);
- strcat(ret, "/");
- if (gp.name)
- strcat(ret, gp.name);
- else
- strcat(ret, "???");
- *name = ret;
- ext2fs_free_mem(&parent_name);
- retval = 0;
-
-cleanup:
- ext2fs_free_mem(&gp.name);
- return retval;
-}
-
-errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
- char **name)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
- if (dir == ino)
- ino = 0;
- retval = ext2fs_get_pathname_int(fs, dir, ino, 32, buf, name);
- ext2fs_free_mem(&buf);
- return retval;
-
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * getsectsize.c --- get the sector size of a device.
- *
- * Copyright (C) 1995, 1995 Theodore Ts'o.
- * Copyright (C) 2003 VMware, Inc.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_LINUX_FD_H
-#include <sys/ioctl.h>
-#include <linux/fd.h>
-#endif
-
-#if defined(__linux__) && defined(_IO) && !defined(BLKSSZGET)
-#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * Returns the number of blocks in a partition
- */
-errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize)
-{
- int fd;
-
-#ifdef CONFIG_LFS
- fd = open64(file, O_RDONLY);
-#else
- fd = open(file, O_RDONLY);
-#endif
- if (fd < 0)
- return errno;
-
-#ifdef BLKSSZGET
- if (ioctl(fd, BLKSSZGET, sectsize) >= 0) {
- close(fd);
- return 0;
- }
-#endif
- *sectsize = 0;
- close(fd);
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * getsize.c --- get the size of a partition.
- *
- * Copyright (C) 1995, 1995 Theodore Ts'o.
- * Copyright (C) 2003 VMware, Inc.
- *
- * Windows version of ext2fs_get_device_size by Chris Li, VMware.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#ifdef HAVE_LINUX_FD_H
-#include <linux/fd.h>
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
-#include <sys/disklabel.h>
-#endif
-#ifdef HAVE_SYS_DISK_H
-#ifdef HAVE_SYS_QUEUE_H
-#include <sys/queue.h> /* for LIST_HEAD */
-#endif
-#include <sys/disk.h>
-#endif
-#ifdef __linux__
-#include <sys/utsname.h>
-#endif
-
-#if defined(__linux__) && defined(_IO) && !defined(BLKGETSIZE)
-#define BLKGETSIZE _IO(0x12,96) /* return device size */
-#endif
-
-#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
-#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
-#endif
-
-#ifdef APPLE_DARWIN
-#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
-#endif /* APPLE_DARWIN */
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#if defined(__CYGWIN__) || defined (WIN32)
-#include <windows.h>
-#include <winioctl.h>
-
-#if (_WIN32_WINNT >= 0x0500)
-#define HAVE_GET_FILE_SIZE_EX 1
-#endif
-
-errcode_t ext2fs_get_device_size(const char *file, int blocksize,
- blk_t *retblocks)
-{
- HANDLE dev;
- PARTITION_INFORMATION pi;
- DISK_GEOMETRY gi;
- DWORD retbytes;
-#ifdef HAVE_GET_FILE_SIZE_EX
- LARGE_INTEGER filesize;
-#else
- DWORD filesize;
-#endif /* HAVE_GET_FILE_SIZE_EX */
-
- dev = CreateFile(file, GENERIC_READ,
- FILE_SHARE_READ | FILE_SHARE_WRITE ,
- NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
-
- if (dev == INVALID_HANDLE_VALUE)
- return EBADF;
- if (DeviceIoControl(dev, IOCTL_DISK_GET_PARTITION_INFO,
- &pi, sizeof(PARTITION_INFORMATION),
- &pi, sizeof(PARTITION_INFORMATION),
- &retbytes, NULL)) {
-
- *retblocks = pi.PartitionLength.QuadPart / blocksize;
-
- } else if (DeviceIoControl(dev, IOCTL_DISK_GET_DRIVE_GEOMETRY,
- &gi, sizeof(DISK_GEOMETRY),
- &gi, sizeof(DISK_GEOMETRY),
- &retbytes, NULL)) {
-
- *retblocks = gi.BytesPerSector *
- gi.SectorsPerTrack *
- gi.TracksPerCylinder *
- gi.Cylinders.QuadPart / blocksize;
-
-#ifdef HAVE_GET_FILE_SIZE_EX
- } else if (GetFileSizeEx(dev, &filesize)) {
- *retblocks = filesize.QuadPart / blocksize;
- }
-#else
- } else {
- filesize = GetFileSize(dev, NULL);
- if (INVALID_FILE_SIZE != filesize) {
- *retblocks = filesize / blocksize;
- }
- }
-#endif /* HAVE_GET_FILE_SIZE_EX */
-
- CloseHandle(dev);
- return 0;
-}
-
-#else
-
-static int valid_offset (int fd, ext2_loff_t offset)
-{
- char ch;
-
- if (ext2fs_llseek (fd, offset, 0) < 0)
- return 0;
- if (read (fd, &ch, 1) < 1)
- return 0;
- return 1;
-}
-
-/*
- * Returns the number of blocks in a partition
- */
-errcode_t ext2fs_get_device_size(const char *file, int blocksize,
- blk_t *retblocks)
-{
- int fd;
- int valid_blkgetsize64 = 1;
-#ifdef __linux__
- struct utsname ut;
-#endif
- unsigned long long size64;
- unsigned long size;
- ext2_loff_t high, low;
-#ifdef FDGETPRM
- struct floppy_struct this_floppy;
-#endif
-#ifdef HAVE_SYS_DISKLABEL_H
- int part;
- struct disklabel lab;
- struct partition *pp;
- char ch;
-#endif /* HAVE_SYS_DISKLABEL_H */
-
-#ifdef CONFIG_LFS
- fd = open64(file, O_RDONLY);
-#else
- fd = open(file, O_RDONLY);
-#endif
- if (fd < 0)
- return errno;
-
-#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
- if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
- if ((sizeof(*retblocks) < sizeof(unsigned long long))
- && ((size64 / (blocksize / 512)) > 0xFFFFFFFF))
- return EFBIG;
- close(fd);
- *retblocks = size64 / (blocksize / 512);
- return 0;
- }
-#endif
-
-#ifdef BLKGETSIZE64
-#ifdef __linux__
- if ((uname(&ut) == 0) &&
- ((ut.release[0] == '2') && (ut.release[1] == '.') &&
- (ut.release[2] < '6') && (ut.release[3] == '.')))
- valid_blkgetsize64 = 0;
-#endif
- if (valid_blkgetsize64 &&
- ioctl(fd, BLKGETSIZE64, &size64) >= 0) {
- if ((sizeof(*retblocks) < sizeof(unsigned long long))
- && ((size64 / blocksize) > 0xFFFFFFFF))
- return EFBIG;
- close(fd);
- *retblocks = size64 / blocksize;
- return 0;
- }
-#endif
-
-#ifdef BLKGETSIZE
- if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
- close(fd);
- *retblocks = size / (blocksize / 512);
- return 0;
- }
-#endif
-
-#ifdef FDGETPRM
- if (ioctl(fd, FDGETPRM, &this_floppy) >= 0) {
- close(fd);
- *retblocks = this_floppy.size / (blocksize / 512);
- return 0;
- }
-#endif
-
-#ifdef HAVE_SYS_DISKLABEL_H
-#if defined(DIOCGMEDIASIZE)
- {
- off_t ms;
- u_int bs;
- if (ioctl(fd, DIOCGMEDIASIZE, &ms) >= 0) {
- *retblocks = ms / blocksize;
- return 0;
- }
- }
-#elif defined(DIOCGDINFO)
- /* old disklabel interface */
- part = strlen(file) - 1;
- if (part >= 0) {
- ch = file[part];
- if (isdigit(ch))
- part = 0;
- else if (ch >= 'a' && ch <= 'h')
- part = ch - 'a';
- else
- part = -1;
- }
- if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
- pp = &lab.d_partitions[part];
- if (pp->p_size) {
- close(fd);
- *retblocks = pp->p_size / (blocksize / 512);
- return 0;
- }
- }
-#endif /* defined(DIOCG*) */
-#endif /* HAVE_SYS_DISKLABEL_H */
-
- /*
- * OK, we couldn't figure it out by using a specialized ioctl,
- * which is generally the best way. So do binary search to
- * find the size of the partition.
- */
- low = 0;
- for (high = 1024; valid_offset (fd, high); high *= 2)
- low = high;
- while (low < high - 1)
- {
- const ext2_loff_t mid = (low + high) / 2;
-
- if (valid_offset (fd, mid))
- low = mid;
- else
- high = mid;
- }
- valid_offset (fd, 0);
- close(fd);
- size64 = low + 1;
- if ((sizeof(*retblocks) < sizeof(unsigned long long))
- && ((size64 / blocksize) > 0xFFFFFFFF))
- return EFBIG;
- *retblocks = size64 / blocksize;
- return 0;
-}
-
-#endif /* WIN32 */
-
-#ifdef DEBUG
-int main(int argc, char **argv)
-{
- blk_t blocks;
- int retval;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s device\n", argv[0]);
- exit(1);
- }
-
- retval = ext2fs_get_device_size(argv[1], 1024, &blocks);
- if (retval) {
- com_err(argv[0], retval,
- "while calling ext2fs_get_device_size");
- exit(1);
- }
- printf("Device %s has %d 1k blocks.\n", argv[1], blocks);
- exit(0);
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * icount.c --- an efficient inode count abstraction
- *
- * Copyright (C) 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <stdio.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * The data storage strategy used by icount relies on the observation
- * that most inode counts are either zero (for non-allocated inodes),
- * one (for most files), and only a few that are two or more
- * (directories and files that are linked to more than one directory).
- *
- * Also, e2fsck tends to load the icount data sequentially.
- *
- * So, we use an inode bitmap to indicate which inodes have a count of
- * one, and then use a sorted list to store the counts for inodes
- * which are greater than one.
- *
- * We also use an optional bitmap to indicate which inodes are already
- * in the sorted list, to speed up the use of this abstraction by
- * e2fsck's pass 2. Pass 2 increments inode counts as it finds them,
- * so this extra bitmap avoids searching the sorted list to see if a
- * particular inode is on the sorted list already.
- */
-
-struct ext2_icount_el {
- ext2_ino_t ino;
- __u16 count;
-};
-
-struct ext2_icount {
- errcode_t magic;
- ext2fs_inode_bitmap single;
- ext2fs_inode_bitmap multiple;
- ext2_ino_t count;
- ext2_ino_t size;
- ext2_ino_t num_inodes;
- ext2_ino_t cursor;
- struct ext2_icount_el *list;
-};
-
-void ext2fs_free_icount(ext2_icount_t icount)
-{
- if (!icount)
- return;
-
- icount->magic = 0;
- ext2fs_free_mem(&icount->list);
- ext2fs_free_inode_bitmap(icount->single);
- ext2fs_free_inode_bitmap(icount->multiple);
- ext2fs_free_mem(&icount);
-}
-
-errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, unsigned int size,
- ext2_icount_t hint, ext2_icount_t *ret)
-{
- ext2_icount_t icount;
- errcode_t retval;
- size_t bytes;
- ext2_ino_t i;
-
- if (hint) {
- EXT2_CHECK_MAGIC(hint, EXT2_ET_MAGIC_ICOUNT);
- if (hint->size > size)
- size = (size_t) hint->size;
- }
-
- retval = ext2fs_get_mem(sizeof(struct ext2_icount), &icount);
- if (retval)
- return retval;
- memset(icount, 0, sizeof(struct ext2_icount));
-
- retval = ext2fs_allocate_inode_bitmap(fs, 0,
- &icount->single);
- if (retval)
- goto errout;
-
- if (flags & EXT2_ICOUNT_OPT_INCREMENT) {
- retval = ext2fs_allocate_inode_bitmap(fs, 0,
- &icount->multiple);
- if (retval)
- goto errout;
- } else
- icount->multiple = 0;
-
- if (size) {
- icount->size = size;
- } else {
- /*
- * Figure out how many special case inode counts we will
- * have. We know we will need one for each directory;
- * we also need to reserve some extra room for file links
- */
- retval = ext2fs_get_num_dirs(fs, &icount->size);
- if (retval)
- goto errout;
- icount->size += fs->super->s_inodes_count / 50;
- }
-
- bytes = (size_t) (icount->size * sizeof(struct ext2_icount_el));
- retval = ext2fs_get_mem(bytes, &icount->list);
- if (retval)
- goto errout;
- memset(icount->list, 0, bytes);
-
- icount->magic = EXT2_ET_MAGIC_ICOUNT;
- icount->count = 0;
- icount->cursor = 0;
- icount->num_inodes = fs->super->s_inodes_count;
-
- /*
- * Populate the sorted list with those entries which were
- * found in the hint icount (since those are ones which will
- * likely need to be in the sorted list this time around).
- */
- if (hint) {
- for (i=0; i < hint->count; i++)
- icount->list[i].ino = hint->list[i].ino;
- icount->count = hint->count;
- }
-
- *ret = icount;
- return 0;
-
-errout:
- ext2fs_free_icount(icount);
- return retval;
-}
-
-errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
- unsigned int size,
- ext2_icount_t *ret)
-{
- return ext2fs_create_icount2(fs, flags, size, 0, ret);
-}
-
-/*
- * insert_icount_el() --- Insert a new entry into the sorted list at a
- * specified position.
- */
-static struct ext2_icount_el *insert_icount_el(ext2_icount_t icount,
- ext2_ino_t ino, int pos)
-{
- struct ext2_icount_el *el;
- errcode_t retval;
- ext2_ino_t new_size = 0;
- int num;
-
- if (icount->count >= icount->size) {
- if (icount->count) {
- new_size = icount->list[(unsigned)icount->count-1].ino;
- new_size = (ext2_ino_t) (icount->count *
- ((float) icount->num_inodes / new_size));
- }
- if (new_size < (icount->size + 100))
- new_size = icount->size + 100;
- retval = ext2fs_resize_mem((size_t) icount->size *
- sizeof(struct ext2_icount_el),
- (size_t) new_size *
- sizeof(struct ext2_icount_el),
- &icount->list);
- if (retval)
- return 0;
- icount->size = new_size;
- }
- num = (int) icount->count - pos;
- if (num < 0)
- return 0; /* should never happen */
- if (num) {
- memmove(&icount->list[pos+1], &icount->list[pos],
- sizeof(struct ext2_icount_el) * num);
- }
- icount->count++;
- el = &icount->list[pos];
- el->count = 0;
- el->ino = ino;
- return el;
-}
-
-/*
- * get_icount_el() --- given an inode number, try to find icount
- * information in the sorted list. If the create flag is set,
- * and we can't find an entry, create one in the sorted list.
- */
-static struct ext2_icount_el *get_icount_el(ext2_icount_t icount,
- ext2_ino_t ino, int create)
-{
- float range;
- int low, high, mid;
- ext2_ino_t lowval, highval;
-
- if (!icount || !icount->list)
- return 0;
-
- if (create && ((icount->count == 0) ||
- (ino > icount->list[(unsigned)icount->count-1].ino))) {
- return insert_icount_el(icount, ino, (unsigned) icount->count);
- }
- if (icount->count == 0)
- return 0;
-
- if (icount->cursor >= icount->count)
- icount->cursor = 0;
- if (ino == icount->list[icount->cursor].ino)
- return &icount->list[icount->cursor++];
- low = 0;
- high = (int) icount->count-1;
- while (low <= high) {
- if (low == high)
- mid = low;
- else {
- /* Interpolate for efficiency */
- lowval = icount->list[low].ino;
- highval = icount->list[high].ino;
-
- if (ino < lowval)
- range = 0;
- else if (ino > highval)
- range = 1;
- else
- range = ((float) (ino - lowval)) /
- (highval - lowval);
- mid = low + ((int) (range * (high-low)));
- }
- if (ino == icount->list[mid].ino) {
- icount->cursor = mid+1;
- return &icount->list[mid];
- }
- if (ino < icount->list[mid].ino)
- high = mid-1;
- else
- low = mid+1;
- }
- /*
- * If we need to create a new entry, it should be right at
- * low (where high will be left at low-1).
- */
- if (create)
- return insert_icount_el(icount, ino, low);
- return 0;
-}
-
-errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *out)
-{
- errcode_t ret = 0;
- unsigned int i;
- const char *bad = "bad icount";
-
- EXT2_CHECK_MAGIC(icount, EXT2_ET_MAGIC_ICOUNT);
-
- if (icount->count > icount->size) {
- fprintf(out, "%s: count > size\n", bad);
- return EXT2_ET_INVALID_ARGUMENT;
- }
- for (i=1; i < icount->count; i++) {
- if (icount->list[i-1].ino >= icount->list[i].ino) {
- fprintf(out, "%s: list[%d].ino=%u, list[%d].ino=%u\n",
- bad, i-1, icount->list[i-1].ino,
- i, icount->list[i].ino);
- ret = EXT2_ET_INVALID_ARGUMENT;
- }
- }
- return ret;
-}
-
-errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, __u16 *ret)
-{
- struct ext2_icount_el *el;
-
- EXT2_CHECK_MAGIC(icount, EXT2_ET_MAGIC_ICOUNT);
-
- if (!ino || (ino > icount->num_inodes))
- return EXT2_ET_INVALID_ARGUMENT;
-
- if (ext2fs_test_inode_bitmap(icount->single, ino)) {
- *ret = 1;
- return 0;
- }
- if (icount->multiple &&
- !ext2fs_test_inode_bitmap(icount->multiple, ino)) {
- *ret = 0;
- return 0;
- }
- el = get_icount_el(icount, ino, 0);
- if (!el) {
- *ret = 0;
- return 0;
- }
- *ret = el->count;
- return 0;
-}
-
-errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
- __u16 *ret)
-{
- struct ext2_icount_el *el;
-
- EXT2_CHECK_MAGIC(icount, EXT2_ET_MAGIC_ICOUNT);
-
- if (!ino || (ino > icount->num_inodes))
- return EXT2_ET_INVALID_ARGUMENT;
-
- if (ext2fs_test_inode_bitmap(icount->single, ino)) {
- /*
- * If the existing count is 1, then we know there is
- * no entry in the list.
- */
- el = get_icount_el(icount, ino, 1);
- if (!el)
- return EXT2_ET_NO_MEMORY;
- ext2fs_unmark_inode_bitmap(icount->single, ino);
- el->count = 2;
- } else if (icount->multiple) {
- /*
- * The count is either zero or greater than 1; if the
- * inode is set in icount->multiple, then there should
- * be an entry in the list, so find it using
- * get_icount_el().
- */
- if (ext2fs_test_inode_bitmap(icount->multiple, ino)) {
- el = get_icount_el(icount, ino, 1);
- if (!el)
- return EXT2_ET_NO_MEMORY;
- el->count++;
- } else {
- /*
- * The count was zero; mark the single bitmap
- * and return.
- */
- zero_count:
- ext2fs_mark_inode_bitmap(icount->single, ino);
- if (ret)
- *ret = 1;
- return 0;
- }
- } else {
- /*
- * The count is either zero or greater than 1; try to
- * find an entry in the list to determine which.
- */
- el = get_icount_el(icount, ino, 0);
- if (!el) {
- /* No entry means the count was zero */
- goto zero_count;
- }
- el = get_icount_el(icount, ino, 1);
- if (!el)
- return EXT2_ET_NO_MEMORY;
- el->count++;
- }
- if (icount->multiple)
- ext2fs_mark_inode_bitmap(icount->multiple, ino);
- if (ret)
- *ret = el->count;
- return 0;
-}
-
-errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
- __u16 *ret)
-{
- struct ext2_icount_el *el;
-
- if (!ino || (ino > icount->num_inodes))
- return EXT2_ET_INVALID_ARGUMENT;
-
- EXT2_CHECK_MAGIC(icount, EXT2_ET_MAGIC_ICOUNT);
-
- if (ext2fs_test_inode_bitmap(icount->single, ino)) {
- ext2fs_unmark_inode_bitmap(icount->single, ino);
- if (icount->multiple)
- ext2fs_unmark_inode_bitmap(icount->multiple, ino);
- else {
- el = get_icount_el(icount, ino, 0);
- if (el)
- el->count = 0;
- }
- if (ret)
- *ret = 0;
- return 0;
- }
-
- if (icount->multiple &&
- !ext2fs_test_inode_bitmap(icount->multiple, ino))
- return EXT2_ET_INVALID_ARGUMENT;
-
- el = get_icount_el(icount, ino, 0);
- if (!el || el->count == 0)
- return EXT2_ET_INVALID_ARGUMENT;
-
- el->count--;
- if (el->count == 1)
- ext2fs_mark_inode_bitmap(icount->single, ino);
- if ((el->count == 0) && icount->multiple)
- ext2fs_unmark_inode_bitmap(icount->multiple, ino);
-
- if (ret)
- *ret = el->count;
- return 0;
-}
-
-errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
- __u16 count)
-{
- struct ext2_icount_el *el;
-
- if (!ino || (ino > icount->num_inodes))
- return EXT2_ET_INVALID_ARGUMENT;
-
- EXT2_CHECK_MAGIC(icount, EXT2_ET_MAGIC_ICOUNT);
-
- if (count == 1) {
- ext2fs_mark_inode_bitmap(icount->single, ino);
- if (icount->multiple)
- ext2fs_unmark_inode_bitmap(icount->multiple, ino);
- return 0;
- }
- if (count == 0) {
- ext2fs_unmark_inode_bitmap(icount->single, ino);
- if (icount->multiple) {
- /*
- * If the icount->multiple bitmap is enabled,
- * we can just clear both bitmaps and we're done
- */
- ext2fs_unmark_inode_bitmap(icount->multiple, ino);
- } else {
- el = get_icount_el(icount, ino, 0);
- if (el)
- el->count = 0;
- }
- return 0;
- }
-
- /*
- * Get the icount element
- */
- el = get_icount_el(icount, ino, 1);
- if (!el)
- return EXT2_ET_NO_MEMORY;
- el->count = count;
- ext2fs_unmark_inode_bitmap(icount->single, ino);
- if (icount->multiple)
- ext2fs_mark_inode_bitmap(icount->multiple, ino);
- return 0;
-}
-
-ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount)
-{
- if (!icount || icount->magic != EXT2_ET_MAGIC_ICOUNT)
- return 0;
-
- return icount->size;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * image.c --- writes out the critical parts of the filesystem as a
- * flat file.
- *
- * Copyright (C) 2000 Theodore Ts'o.
- *
- * Note: this uses the POSIX IO interfaces, unlike most of the other
- * functions in this library. So sue me.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#ifndef HAVE_TYPE_SSIZE_T
-typedef int ssize_t;
-#endif
-
-/*
- * This function returns 1 if the specified block is all zeros
- */
-static int check_zero_block(char *buf, int blocksize)
-{
- char *cp = buf;
- int left = blocksize;
-
- while (left > 0) {
- if (*cp++)
- return 0;
- left--;
- }
- return 1;
-}
-
-/*
- * Write the inode table out as a single block.
- */
-#define BUF_BLOCKS 32
-
-errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags)
-{
- unsigned int group, left, c, d;
- char *buf, *cp;
- blk_t blk;
- ssize_t actual;
- errcode_t retval;
-
- buf = xmalloc(fs->blocksize * BUF_BLOCKS);
-
- for (group = 0; group < fs->group_desc_count; group++) {
- blk = fs->group_desc[(unsigned)group].bg_inode_table;
- if (!blk)
- return EXT2_ET_MISSING_INODE_TABLE;
- left = fs->inode_blocks_per_group;
- while (left) {
- c = BUF_BLOCKS;
- if (c > left)
- c = left;
- retval = io_channel_read_blk(fs->io, blk, c, buf);
- if (retval)
- goto errout;
- cp = buf;
- while (c) {
- if (!(flags & IMAGER_FLAG_SPARSEWRITE)) {
- d = c;
- goto skip_sparse;
- }
- /* Skip zero blocks */
- if (check_zero_block(cp, fs->blocksize)) {
- c--;
- blk++;
- left--;
- cp += fs->blocksize;
- lseek(fd, fs->blocksize, SEEK_CUR);
- continue;
- }
- /* Find non-zero blocks */
- for (d=1; d < c; d++) {
- if (check_zero_block(cp + d*fs->blocksize, fs->blocksize))
- break;
- }
- skip_sparse:
- actual = write(fd, cp, fs->blocksize * d);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != (ssize_t) (fs->blocksize * d)) {
- retval = EXT2_ET_SHORT_WRITE;
- goto errout;
- }
- blk += d;
- left -= d;
- cp += fs->blocksize * d;
- c -= d;
- }
- }
- }
- retval = 0;
-
-errout:
- free(buf);
- return retval;
-}
-
-/*
- * Read in the inode table and stuff it into place
- */
-errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd,
- int flags EXT2FS_ATTR((unused)))
-{
- unsigned int group, c, left;
- char *buf;
- blk_t blk;
- ssize_t actual;
- errcode_t retval;
-
- buf = xmalloc(fs->blocksize * BUF_BLOCKS);
-
- for (group = 0; group < fs->group_desc_count; group++) {
- blk = fs->group_desc[(unsigned)group].bg_inode_table;
- if (!blk) {
- retval = EXT2_ET_MISSING_INODE_TABLE;
- goto errout;
- }
- left = fs->inode_blocks_per_group;
- while (left) {
- c = BUF_BLOCKS;
- if (c > left)
- c = left;
- actual = read(fd, buf, fs->blocksize * c);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != (ssize_t) (fs->blocksize * c)) {
- retval = EXT2_ET_SHORT_READ;
- goto errout;
- }
- retval = io_channel_write_blk(fs->io, blk, c, buf);
- if (retval)
- goto errout;
-
- blk += c;
- left -= c;
- }
- }
- retval = ext2fs_flush_icache(fs);
-
-errout:
- free(buf);
- return retval;
-}
-
-/*
- * Write out superblock and group descriptors
- */
-errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd,
- int flags EXT2FS_ATTR((unused)))
-{
- char *buf, *cp;
- ssize_t actual;
- errcode_t retval;
-
- buf = xmalloc(fs->blocksize);
-
- /*
- * Write out the superblock
- */
- memset(buf, 0, fs->blocksize);
- memcpy(buf, fs->super, SUPERBLOCK_SIZE);
- actual = write(fd, buf, fs->blocksize);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != (ssize_t) fs->blocksize) {
- retval = EXT2_ET_SHORT_WRITE;
- goto errout;
- }
-
- /*
- * Now write out the block group descriptors
- */
- cp = (char *) fs->group_desc;
- actual = write(fd, cp, fs->blocksize * fs->desc_blocks);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != (ssize_t) (fs->blocksize * fs->desc_blocks)) {
- retval = EXT2_ET_SHORT_WRITE;
- goto errout;
- }
-
- retval = 0;
-
-errout:
- free(buf);
- return retval;
-}
-
-/*
- * Read the superblock and group descriptors and overwrite them.
- */
-errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd,
- int flags EXT2FS_ATTR((unused)))
-{
- char *buf;
- ssize_t actual, size;
- errcode_t retval;
-
- size = fs->blocksize * (fs->group_desc_count + 1);
- buf = xmalloc(size);
-
- /*
- * Read it all in.
- */
- actual = read(fd, buf, size);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != size) {
- retval = EXT2_ET_SHORT_READ;
- goto errout;
- }
-
- /*
- * Now copy in the superblock and group descriptors
- */
- memcpy(fs->super, buf, SUPERBLOCK_SIZE);
-
- memcpy(fs->group_desc, buf + fs->blocksize,
- fs->blocksize * fs->group_desc_count);
-
- retval = 0;
-
-errout:
- free(buf);
- return retval;
-}
-
-/*
- * Write the block/inode bitmaps.
- */
-errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags)
-{
- char *ptr;
- int c, size;
- char zero_buf[1024];
- ssize_t actual;
- errcode_t retval;
-
- if (flags & IMAGER_FLAG_INODEMAP) {
- if (!fs->inode_map) {
- retval = ext2fs_read_inode_bitmap(fs);
- if (retval)
- return retval;
- }
- ptr = fs->inode_map->bitmap;
- size = (EXT2_INODES_PER_GROUP(fs->super) / 8);
- } else {
- if (!fs->block_map) {
- retval = ext2fs_read_block_bitmap(fs);
- if (retval)
- return retval;
- }
- ptr = fs->block_map->bitmap;
- size = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
- }
- size = size * fs->group_desc_count;
-
- actual = write(fd, ptr, size);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != size) {
- retval = EXT2_ET_SHORT_WRITE;
- goto errout;
- }
- size = size % fs->blocksize;
- memset(zero_buf, 0, sizeof(zero_buf));
- if (size) {
- size = fs->blocksize - size;
- while (size) {
- c = size;
- if (c > (int) sizeof(zero_buf))
- c = sizeof(zero_buf);
- actual = write(fd, zero_buf, c);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != c) {
- retval = EXT2_ET_SHORT_WRITE;
- goto errout;
- }
- size -= c;
- }
- }
- retval = 0;
-errout:
- return retval;
-}
-
-
-/*
- * Read the block/inode bitmaps.
- */
-errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags)
-{
- char *ptr, *buf = 0;
- int size;
- ssize_t actual;
- errcode_t retval;
-
- if (flags & IMAGER_FLAG_INODEMAP) {
- if (!fs->inode_map) {
- retval = ext2fs_read_inode_bitmap(fs);
- if (retval)
- return retval;
- }
- ptr = fs->inode_map->bitmap;
- size = (EXT2_INODES_PER_GROUP(fs->super) / 8);
- } else {
- if (!fs->block_map) {
- retval = ext2fs_read_block_bitmap(fs);
- if (retval)
- return retval;
- }
- ptr = fs->block_map->bitmap;
- size = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
- }
- size = size * fs->group_desc_count;
-
- buf = xmalloc(size);
-
- actual = read(fd, buf, size);
- if (actual == -1) {
- retval = errno;
- goto errout;
- }
- if (actual != size) {
- retval = EXT2_ET_SHORT_WRITE;
- goto errout;
- }
- memcpy(ptr, buf, size);
-
- retval = 0;
-errout:
- free(buf);
- return retval;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ind_block.c --- indirect block I/O routines
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- * 2001, 2002, 2003, 2004, 2005 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf)
-{
- errcode_t retval;
-#if BB_BIG_ENDIAN
- blk_t *block_nr;
- int i;
- int limit = fs->blocksize >> 2;
-#endif
-
- if ((fs->flags & EXT2_FLAG_IMAGE_FILE) &&
- (fs->io != fs->image_io))
- memset(buf, 0, fs->blocksize);
- else {
- retval = io_channel_read_blk(fs->io, blk, 1, buf);
- if (retval)
- return retval;
- }
-#if BB_BIG_ENDIAN
- if (fs->flags & (EXT2_FLAG_SWAP_BYTES | EXT2_FLAG_SWAP_BYTES_READ)) {
- block_nr = (blk_t *) buf;
- for (i = 0; i < limit; i++, block_nr++)
- *block_nr = ext2fs_swab32(*block_nr);
- }
-#endif
- return 0;
-}
-
-errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf)
-{
-#if BB_BIG_ENDIAN
- blk_t *block_nr;
- int i;
- int limit = fs->blocksize >> 2;
-#endif
-
- if (fs->flags & EXT2_FLAG_IMAGE_FILE)
- return 0;
-
-#if BB_BIG_ENDIAN
- if (fs->flags & (EXT2_FLAG_SWAP_BYTES | EXT2_FLAG_SWAP_BYTES_WRITE)) {
- block_nr = (blk_t *) buf;
- for (i = 0; i < limit; i++, block_nr++)
- *block_nr = ext2fs_swab32(*block_nr);
- }
-#endif
- return io_channel_write_blk(fs->io, blk, 1, buf);
-}
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * initialize.c --- initialize a filesystem handle given superblock
- * parameters. Used by mke2fs when initializing a filesystem.
- *
- * Copyright (C) 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#if defined(__linux__) && defined(EXT2_OS_LINUX)
-#define CREATOR_OS EXT2_OS_LINUX
-#else
-#if defined(__GNU__) && defined(EXT2_OS_HURD)
-#define CREATOR_OS EXT2_OS_HURD
-#else
-#if defined(__FreeBSD__) && defined(EXT2_OS_FREEBSD)
-#define CREATOR_OS EXT2_OS_FREEBSD
-#else
-#if defined(LITES) && defined(EXT2_OS_LITES)
-#define CREATOR_OS EXT2_OS_LITES
-#else
-#define CREATOR_OS EXT2_OS_LINUX /* by default */
-#endif /* defined(LITES) && defined(EXT2_OS_LITES) */
-#endif /* defined(__FreeBSD__) && defined(EXT2_OS_FREEBSD) */
-#endif /* defined(__GNU__) && defined(EXT2_OS_HURD) */
-#endif /* defined(__linux__) && defined(EXT2_OS_LINUX) */
-
-/*
- * Note we override the kernel include file's idea of what the default
- * check interval (never) should be. It's a good idea to check at
- * least *occasionally*, specially since servers will never rarely get
- * to reboot, since Linux is so robust these days. :-)
- *
- * 180 days (six months) seems like a good value.
- */
-#ifdef EXT2_DFL_CHECKINTERVAL
-#undef EXT2_DFL_CHECKINTERVAL
-#endif
-#define EXT2_DFL_CHECKINTERVAL (86400L * 180L)
-
-/*
- * Calculate the number of GDT blocks to reserve for online filesystem growth.
- * The absolute maximum number of GDT blocks we can reserve is determined by
- * the number of block pointers that can fit into a single block.
- */
-static int calc_reserved_gdt_blocks(ext2_filsys fs)
-{
- struct ext2_super_block *sb = fs->super;
- unsigned long bpg = sb->s_blocks_per_group;
- unsigned int gdpb = fs->blocksize / sizeof(struct ext2_group_desc);
- unsigned long max_blocks = 0xffffffff;
- unsigned long rsv_groups;
- int rsv_gdb;
-
- /* We set it at 1024x the current filesystem size, or
- * the upper block count limit (2^32), whichever is lower.
- */
- if (sb->s_blocks_count < max_blocks / 1024)
- max_blocks = sb->s_blocks_count * 1024;
- rsv_groups = (max_blocks - sb->s_first_data_block + bpg - 1) / bpg;
- rsv_gdb = (rsv_groups + gdpb - 1) / gdpb - fs->desc_blocks;
- if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb))
- rsv_gdb = EXT2_ADDR_PER_BLOCK(sb);
-#ifdef RES_GDT_DEBUG
- printf("max_blocks %lu, rsv_groups = %lu, rsv_gdb = %lu\n",
- max_blocks, rsv_groups, rsv_gdb);
-#endif
-
- return rsv_gdb;
-}
-
-errcode_t ext2fs_initialize(const char *name, int flags,
- struct ext2_super_block *param,
- io_manager manager, ext2_filsys *ret_fs)
-{
- ext2_filsys fs;
- errcode_t retval;
- struct ext2_super_block *super;
- int frags_per_block;
- unsigned int rem;
- unsigned int overhead = 0;
- blk_t group_block;
- unsigned int ipg;
- dgrp_t i;
- blk_t numblocks;
- int rsv_gdt;
- char *buf;
-
- if (!param || !param->s_blocks_count)
- return EXT2_ET_INVALID_ARGUMENT;
-
- retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
- if (retval)
- return retval;
-
- memset(fs, 0, sizeof(struct struct_ext2_filsys));
- fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS;
- fs->flags = flags | EXT2_FLAG_RW;
- fs->umask = 022;
-#ifdef WORDS_BIGENDIAN
- fs->flags |= EXT2_FLAG_SWAP_BYTES;
-#endif
- retval = manager->open(name, IO_FLAG_RW, &fs->io);
- if (retval)
- goto cleanup;
- fs->image_io = fs->io;
- fs->io->app_data = fs;
- retval = ext2fs_get_mem(strlen(name)+1, &fs->device_name);
- if (retval)
- goto cleanup;
-
- strcpy(fs->device_name, name);
- retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &super);
- if (retval)
- goto cleanup;
- fs->super = super;
-
- memset(super, 0, SUPERBLOCK_SIZE);
-
-#define set_field(field, default) (super->field = param->field ? \
- param->field : (default))
-
- super->s_magic = EXT2_SUPER_MAGIC;
- super->s_state = EXT2_VALID_FS;
-
- set_field(s_log_block_size, 0); /* default blocksize: 1024 bytes */
- set_field(s_log_frag_size, 0); /* default fragsize: 1024 bytes */
- set_field(s_first_data_block, super->s_log_block_size ? 0 : 1);
- set_field(s_max_mnt_count, EXT2_DFL_MAX_MNT_COUNT);
- set_field(s_errors, EXT2_ERRORS_DEFAULT);
- set_field(s_feature_compat, 0);
- set_field(s_feature_incompat, 0);
- set_field(s_feature_ro_compat, 0);
- set_field(s_first_meta_bg, 0);
- if (super->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) {
- retval = EXT2_ET_UNSUPP_FEATURE;
- goto cleanup;
- }
- if (super->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
- retval = EXT2_ET_RO_UNSUPP_FEATURE;
- goto cleanup;
- }
-
- set_field(s_rev_level, EXT2_GOOD_OLD_REV);
- if (super->s_rev_level >= EXT2_DYNAMIC_REV) {
- set_field(s_first_ino, EXT2_GOOD_OLD_FIRST_INO);
- set_field(s_inode_size, EXT2_GOOD_OLD_INODE_SIZE);
- }
-
- set_field(s_checkinterval, EXT2_DFL_CHECKINTERVAL);
- super->s_mkfs_time = super->s_lastcheck = time(NULL);
-
- super->s_creator_os = CREATOR_OS;
-
- fs->blocksize = EXT2_BLOCK_SIZE(super);
- fs->fragsize = EXT2_FRAG_SIZE(super);
- frags_per_block = fs->blocksize / fs->fragsize;
-
- /* default: (fs->blocksize*8) blocks/group, up to 2^16 (GDT limit) */
- set_field(s_blocks_per_group, fs->blocksize * 8);
- if (super->s_blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(super))
- super->s_blocks_per_group = EXT2_MAX_BLOCKS_PER_GROUP(super);
- super->s_frags_per_group = super->s_blocks_per_group * frags_per_block;
-
- super->s_blocks_count = param->s_blocks_count;
- super->s_r_blocks_count = param->s_r_blocks_count;
- if (super->s_r_blocks_count >= param->s_blocks_count) {
- retval = EXT2_ET_INVALID_ARGUMENT;
- goto cleanup;
- }
-
- /*
- * If we're creating an external journal device, we don't need
- * to bother with the rest.
- */
- if (super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- fs->group_desc_count = 0;
- ext2fs_mark_super_dirty(fs);
- *ret_fs = fs;
- return 0;
- }
-
-retry:
- fs->group_desc_count = (super->s_blocks_count -
- super->s_first_data_block +
- EXT2_BLOCKS_PER_GROUP(super) - 1)
- / EXT2_BLOCKS_PER_GROUP(super);
- if (fs->group_desc_count == 0) {
- retval = EXT2_ET_TOOSMALL;
- goto cleanup;
- }
- fs->desc_blocks = (fs->group_desc_count +
- EXT2_DESC_PER_BLOCK(super) - 1)
- / EXT2_DESC_PER_BLOCK(super);
-
- i = fs->blocksize >= 4096 ? 1 : 4096 / fs->blocksize;
- set_field(s_inodes_count, super->s_blocks_count / i);
-
- /*
- * Make sure we have at least EXT2_FIRST_INO + 1 inodes, so
- * that we have enough inodes for the filesystem(!)
- */
- if (super->s_inodes_count < EXT2_FIRST_INODE(super)+1)
- super->s_inodes_count = EXT2_FIRST_INODE(super)+1;
-
- /*
- * There should be at least as many inodes as the user
- * requested. Figure out how many inodes per group that
- * should be. But make sure that we don't allocate more than
- * one bitmap's worth of inodes each group.
- */
- ipg = (super->s_inodes_count + fs->group_desc_count - 1) /
- fs->group_desc_count;
- if (ipg > fs->blocksize * 8) {
- if (super->s_blocks_per_group >= 256) {
- /* Try again with slightly different parameters */
- super->s_blocks_per_group -= 8;
- super->s_blocks_count = param->s_blocks_count;
- super->s_frags_per_group = super->s_blocks_per_group *
- frags_per_block;
- goto retry;
- } else
- return EXT2_ET_TOO_MANY_INODES;
- }
-
- if (ipg > (unsigned) EXT2_MAX_INODES_PER_GROUP(super))
- ipg = EXT2_MAX_INODES_PER_GROUP(super);
-
- super->s_inodes_per_group = ipg;
- if (super->s_inodes_count > ipg * fs->group_desc_count)
- super->s_inodes_count = ipg * fs->group_desc_count;
-
- /*
- * Make sure the number of inodes per group completely fills
- * the inode table blocks in the descriptor. If not, add some
- * additional inodes/group. Waste not, want not...
- */
- fs->inode_blocks_per_group = (((super->s_inodes_per_group *
- EXT2_INODE_SIZE(super)) +
- EXT2_BLOCK_SIZE(super) - 1) /
- EXT2_BLOCK_SIZE(super));
- super->s_inodes_per_group = ((fs->inode_blocks_per_group *
- EXT2_BLOCK_SIZE(super)) /
- EXT2_INODE_SIZE(super));
- /*
- * Finally, make sure the number of inodes per group is a
- * multiple of 8. This is needed to simplify the bitmap
- * splicing code.
- */
- super->s_inodes_per_group &= ~7;
- fs->inode_blocks_per_group = (((super->s_inodes_per_group *
- EXT2_INODE_SIZE(super)) +
- EXT2_BLOCK_SIZE(super) - 1) /
- EXT2_BLOCK_SIZE(super));
-
- /*
- * adjust inode count to reflect the adjusted inodes_per_group
- */
- super->s_inodes_count = super->s_inodes_per_group *
- fs->group_desc_count;
- super->s_free_inodes_count = super->s_inodes_count;
-
- /*
- * check the number of reserved group descriptor table blocks
- */
- if (super->s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)
- rsv_gdt = calc_reserved_gdt_blocks(fs);
- else
- rsv_gdt = 0;
- set_field(s_reserved_gdt_blocks, rsv_gdt);
- if (super->s_reserved_gdt_blocks > EXT2_ADDR_PER_BLOCK(super)) {
- retval = EXT2_ET_RES_GDT_BLOCKS;
- goto cleanup;
- }
-
- /*
- * Overhead is the number of bookkeeping blocks per group. It
- * includes the superblock backup, the group descriptor
- * backups, the inode bitmap, the block bitmap, and the inode
- * table.
- */
-
- overhead = (int) (2 + fs->inode_blocks_per_group);
-
- if (ext2fs_bg_has_super(fs, fs->group_desc_count - 1))
- overhead += 1 + fs->desc_blocks + super->s_reserved_gdt_blocks;
-
- /* This can only happen if the user requested too many inodes */
- if (overhead > super->s_blocks_per_group)
- return EXT2_ET_TOO_MANY_INODES;
-
- /*
- * See if the last group is big enough to support the
- * necessary data structures. If not, we need to get rid of
- * it.
- */
- rem = ((super->s_blocks_count - super->s_first_data_block) %
- super->s_blocks_per_group);
- if ((fs->group_desc_count == 1) && rem && (rem < overhead))
- return EXT2_ET_TOOSMALL;
- if (rem && (rem < overhead+50)) {
- super->s_blocks_count -= rem;
- goto retry;
- }
-
- /*
- * At this point we know how big the filesystem will be. So
- * we can do any and all allocations that depend on the block
- * count.
- */
-
- retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
- if (retval)
- goto cleanup;
-
- sprintf(buf, "block bitmap for %s", fs->device_name);
- retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map);
- if (retval)
- goto cleanup;
-
- sprintf(buf, "inode bitmap for %s", fs->device_name);
- retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);
- if (retval)
- goto cleanup;
-
- ext2fs_free_mem(&buf);
-
- retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize,
- &fs->group_desc);
- if (retval)
- goto cleanup;
-
- memset(fs->group_desc, 0, (size_t) fs->desc_blocks * fs->blocksize);
-
- /*
- * Reserve the superblock and group descriptors for each
- * group, and fill in the correct group statistics for group.
- * Note that although the block bitmap, inode bitmap, and
- * inode table have not been allocated (and in fact won't be
- * by this routine), they are accounted for nevertheless.
- */
- group_block = super->s_first_data_block;
- super->s_free_blocks_count = 0;
- for (i = 0; i < fs->group_desc_count; i++) {
- numblocks = ext2fs_reserve_super_and_bgd(fs, i, fs->block_map);
-
- super->s_free_blocks_count += numblocks;
- fs->group_desc[i].bg_free_blocks_count = numblocks;
- fs->group_desc[i].bg_free_inodes_count =
- fs->super->s_inodes_per_group;
- fs->group_desc[i].bg_used_dirs_count = 0;
-
- group_block += super->s_blocks_per_group;
- }
-
- ext2fs_mark_super_dirty(fs);
- ext2fs_mark_bb_dirty(fs);
- ext2fs_mark_ib_dirty(fs);
-
- io_channel_set_blksize(fs->io, fs->blocksize);
-
- *ret_fs = fs;
- return 0;
-cleanup:
- ext2fs_free(fs);
- return retval;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * inline.c --- Includes the inlined functions defined in the header
- * files as standalone functions, in case the application program
- * is compiled with inlining turned off.
- *
- * Copyright (C) 1993, 1994 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#define INCLUDE_INLINE_FUNCS
-#include "ext2fs.h"
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * inode.c --- utility routines to read and write inodes
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-#include "e2image.h"
-
-struct ext2_struct_inode_scan {
- errcode_t magic;
- ext2_filsys fs;
- ext2_ino_t current_inode;
- blk_t current_block;
- dgrp_t current_group;
- ext2_ino_t inodes_left;
- blk_t blocks_left;
- dgrp_t groups_left;
- blk_t inode_buffer_blocks;
- char * inode_buffer;
- int inode_size;
- char * ptr;
- int bytes_left;
- char *temp_buffer;
- errcode_t (*done_group)(ext2_filsys fs,
- dgrp_t group,
- void * priv_data);
- void * done_group_data;
- int bad_block_ptr;
- int scan_flags;
- int reserved[6];
-};
-
-/*
- * This routine flushes the icache, if it exists.
- */
-errcode_t ext2fs_flush_icache(ext2_filsys fs)
-{
- int i;
-
- if (!fs->icache)
- return 0;
-
- for (i=0; i < fs->icache->cache_size; i++)
- fs->icache->cache[i].ino = 0;
-
- fs->icache->buffer_blk = 0;
- return 0;
-}
-
-static errcode_t create_icache(ext2_filsys fs)
-{
- errcode_t retval;
-
- if (fs->icache)
- return 0;
- retval = ext2fs_get_mem(sizeof(struct ext2_inode_cache), &fs->icache);
- if (retval)
- return retval;
-
- memset(fs->icache, 0, sizeof(struct ext2_inode_cache));
- retval = ext2fs_get_mem(fs->blocksize, &fs->icache->buffer);
- if (retval) {
- ext2fs_free_mem(&fs->icache);
- return retval;
- }
- fs->icache->buffer_blk = 0;
- fs->icache->cache_last = -1;
- fs->icache->cache_size = 4;
- fs->icache->refcount = 1;
- retval = ext2fs_get_mem(sizeof(struct ext2_inode_cache_ent)
- * fs->icache->cache_size,
- &fs->icache->cache);
- if (retval) {
- ext2fs_free_mem(&fs->icache->buffer);
- ext2fs_free_mem(&fs->icache);
- return retval;
- }
- ext2fs_flush_icache(fs);
- return 0;
-}
-
-errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
- ext2_inode_scan *ret_scan)
-{
- ext2_inode_scan scan;
- errcode_t retval;
- errcode_t (*save_get_blocks)(ext2_filsys f, ext2_ino_t ino, blk_t *blocks);
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- /*
- * If fs->badblocks isn't set, then set it --- since the inode
- * scanning functions require it.
- */
- if (fs->badblocks == 0) {
- /*
- * Temporarly save fs->get_blocks and set it to zero,
- * for compatibility with old e2fsck's.
- */
- save_get_blocks = fs->get_blocks;
- fs->get_blocks = 0;
- retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
- if (retval) {
- ext2fs_badblocks_list_free(fs->badblocks);
- fs->badblocks = 0;
- }
- fs->get_blocks = save_get_blocks;
- }
-
- retval = ext2fs_get_mem(sizeof(struct ext2_struct_inode_scan), &scan);
- if (retval)
- return retval;
- memset(scan, 0, sizeof(struct ext2_struct_inode_scan));
-
- scan->magic = EXT2_ET_MAGIC_INODE_SCAN;
- scan->fs = fs;
- scan->inode_size = EXT2_INODE_SIZE(fs->super);
- scan->bytes_left = 0;
- scan->current_group = 0;
- scan->groups_left = fs->group_desc_count - 1;
- scan->inode_buffer_blocks = buffer_blocks ? buffer_blocks : 8;
- scan->current_block = scan->fs->
- group_desc[scan->current_group].bg_inode_table;
- scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
- scan->blocks_left = scan->fs->inode_blocks_per_group;
- retval = ext2fs_get_mem((size_t) (scan->inode_buffer_blocks *
- fs->blocksize),
- &scan->inode_buffer);
- scan->done_group = 0;
- scan->done_group_data = 0;
- scan->bad_block_ptr = 0;
- if (retval) {
- ext2fs_free_mem(&scan);
- return retval;
- }
- retval = ext2fs_get_mem(scan->inode_size, &scan->temp_buffer);
- if (retval) {
- ext2fs_free_mem(&scan->inode_buffer);
- ext2fs_free_mem(&scan);
- return retval;
- }
- if (scan->fs->badblocks && scan->fs->badblocks->num)
- scan->scan_flags |= EXT2_SF_CHK_BADBLOCKS;
- *ret_scan = scan;
- return 0;
-}
-
-void ext2fs_close_inode_scan(ext2_inode_scan scan)
-{
- if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
- return;
-
- ext2fs_free_mem(&scan->inode_buffer);
- scan->inode_buffer = NULL;
- ext2fs_free_mem(&scan->temp_buffer);
- scan->temp_buffer = NULL;
- ext2fs_free_mem(&scan);
- return;
-}
-
-void ext2fs_set_inode_callback(ext2_inode_scan scan,
- errcode_t (*done_group)(ext2_filsys fs,
- dgrp_t group,
- void * priv_data),
- void *done_group_data)
-{
- if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
- return;
-
- scan->done_group = done_group;
- scan->done_group_data = done_group_data;
-}
-
-int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
- int clear_flags)
-{
- int old_flags;
-
- if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
- return 0;
-
- old_flags = scan->scan_flags;
- scan->scan_flags &= ~clear_flags;
- scan->scan_flags |= set_flags;
- return old_flags;
-}
-
-/*
- * This function is called by ext2fs_get_next_inode when it needs to
- * get ready to read in a new blockgroup.
- */
-static errcode_t get_next_blockgroup(ext2_inode_scan scan)
-{
- scan->current_group++;
- scan->groups_left--;
-
- scan->current_block = scan->fs->
- group_desc[scan->current_group].bg_inode_table;
-
- scan->current_inode = scan->current_group *
- EXT2_INODES_PER_GROUP(scan->fs->super);
-
- scan->bytes_left = 0;
- scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
- scan->blocks_left = scan->fs->inode_blocks_per_group;
- return 0;
-}
-
-errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
- int group)
-{
- scan->current_group = group - 1;
- scan->groups_left = scan->fs->group_desc_count - group;
- return get_next_blockgroup(scan);
-}
-
-/*
- * This function is called by get_next_blocks() to check for bad
- * blocks in the inode table.
- *
- * This function assumes that badblocks_list->list is sorted in
- * increasing order.
- */
-static errcode_t check_for_inode_bad_blocks(ext2_inode_scan scan,
- blk_t *num_blocks)
-{
- blk_t blk = scan->current_block;
- badblocks_list bb = scan->fs->badblocks;
-
- /*
- * If the inode table is missing, then obviously there are no
- * bad blocks. :-)
- */
- if (blk == 0)
- return 0;
-
- /*
- * If the current block is greater than the bad block listed
- * in the bad block list, then advance the pointer until this
- * is no longer the case. If we run out of bad blocks, then
- * we don't need to do any more checking!
- */
- while (blk > bb->list[scan->bad_block_ptr]) {
- if (++scan->bad_block_ptr >= bb->num) {
- scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
- return 0;
- }
- }
-
- /*
- * If the current block is equal to the bad block listed in
- * the bad block list, then handle that one block specially.
- * (We could try to handle runs of bad blocks, but that
- * only increases CPU efficiency by a small amount, at the
- * expense of a huge expense of code complexity, and for an
- * uncommon case at that.)
- */
- if (blk == bb->list[scan->bad_block_ptr]) {
- scan->scan_flags |= EXT2_SF_BAD_INODE_BLK;
- *num_blocks = 1;
- if (++scan->bad_block_ptr >= bb->num)
- scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
- return 0;
- }
-
- /*
- * If there is a bad block in the range that we're about to
- * read in, adjust the number of blocks to read so that we we
- * don't read in the bad block. (Then the next block to read
- * will be the bad block, which is handled in the above case.)
- */
- if ((blk + *num_blocks) > bb->list[scan->bad_block_ptr])
- *num_blocks = (int) (bb->list[scan->bad_block_ptr] - blk);
-
- return 0;
-}
-
-/*
- * This function is called by ext2fs_get_next_inode when it needs to
- * read in more blocks from the current blockgroup's inode table.
- */
-static errcode_t get_next_blocks(ext2_inode_scan scan)
-{
- blk_t num_blocks;
- errcode_t retval;
-
- /*
- * Figure out how many blocks to read; we read at most
- * inode_buffer_blocks, and perhaps less if there aren't that
- * many blocks left to read.
- */
- num_blocks = scan->inode_buffer_blocks;
- if (num_blocks > scan->blocks_left)
- num_blocks = scan->blocks_left;
-
- /*
- * If the past block "read" was a bad block, then mark the
- * left-over extra bytes as also being bad.
- */
- if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK) {
- if (scan->bytes_left)
- scan->scan_flags |= EXT2_SF_BAD_EXTRA_BYTES;
- scan->scan_flags &= ~EXT2_SF_BAD_INODE_BLK;
- }
-
- /*
- * Do inode bad block processing, if necessary.
- */
- if (scan->scan_flags & EXT2_SF_CHK_BADBLOCKS) {
- retval = check_for_inode_bad_blocks(scan, &num_blocks);
- if (retval)
- return retval;
- }
-
- if ((scan->scan_flags & EXT2_SF_BAD_INODE_BLK) ||
- (scan->current_block == 0)) {
- memset(scan->inode_buffer, 0,
- (size_t) num_blocks * scan->fs->blocksize);
- } else {
- retval = io_channel_read_blk(scan->fs->io,
- scan->current_block,
- (int) num_blocks,
- scan->inode_buffer);
- if (retval)
- return EXT2_ET_NEXT_INODE_READ;
- }
- scan->ptr = scan->inode_buffer;
- scan->bytes_left = num_blocks * scan->fs->blocksize;
-
- scan->blocks_left -= num_blocks;
- if (scan->current_block)
- scan->current_block += num_blocks;
- return 0;
-}
-
-errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,
- struct ext2_inode *inode, int bufsize)
-{
- errcode_t retval;
- int extra_bytes = 0;
-
- EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);
-
- /*
- * Do we need to start reading a new block group?
- */
- if (scan->inodes_left <= 0) {
- force_new_group:
- if (scan->done_group) {
- retval = (scan->done_group)
- (scan->fs, scan->current_group,
- scan->done_group_data);
- if (retval)
- return retval;
- }
- if (scan->groups_left <= 0) {
- *ino = 0;
- return 0;
- }
- retval = get_next_blockgroup(scan);
- if (retval)
- return retval;
- }
- /*
- * This is done outside the above if statement so that the
- * check can be done for block group #0.
- */
- if (scan->current_block == 0) {
- if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {
- goto force_new_group;
- } else
- return EXT2_ET_MISSING_INODE_TABLE;
- }
-
-
- /*
- * Have we run out of space in the inode buffer? If so, we
- * need to read in more blocks.
- */
- if (scan->bytes_left < scan->inode_size) {
- memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);
- extra_bytes = scan->bytes_left;
-
- retval = get_next_blocks(scan);
- if (retval)
- return retval;
-#if 0
- /*
- * XXX test Need check for used inode somehow.
- * (Note: this is hard.)
- */
- if (is_empty_scan(scan))
- goto force_new_group;
-#endif
- }
-
- retval = 0;
- if (extra_bytes) {
- memcpy(scan->temp_buffer+extra_bytes, scan->ptr,
- scan->inode_size - extra_bytes);
- scan->ptr += scan->inode_size - extra_bytes;
- scan->bytes_left -= scan->inode_size - extra_bytes;
-
-#if BB_BIG_ENDIAN
- if ((scan->fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (scan->fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
- ext2fs_swap_inode_full(scan->fs,
- (struct ext2_inode_large *) inode,
- (struct ext2_inode_large *) scan->temp_buffer,
- 0, bufsize);
- else
-#endif
- *inode = *((struct ext2_inode *) scan->temp_buffer);
- if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)
- retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
- scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;
- } else {
-#if BB_BIG_ENDIAN
- if ((scan->fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (scan->fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
- ext2fs_swap_inode_full(scan->fs,
- (struct ext2_inode_large *) inode,
- (struct ext2_inode_large *) scan->ptr,
- 0, bufsize);
- else
-#endif
- memcpy(inode, scan->ptr, bufsize);
- scan->ptr += scan->inode_size;
- scan->bytes_left -= scan->inode_size;
- if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)
- retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
- }
-
- scan->inodes_left--;
- scan->current_inode++;
- *ino = scan->current_inode;
- return retval;
-}
-
-errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
- struct ext2_inode *inode)
-{
- return ext2fs_get_next_inode_full(scan, ino, inode,
- sizeof(struct ext2_inode));
-}
-
-/*
- * Functions to read and write a single inode.
- */
-errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode, int bufsize)
-{
- unsigned long group, block, block_nr, offset;
- char *ptr;
- errcode_t retval;
- int clen, i, inodes_per_block, length;
- io_channel io;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- /* Check to see if user has an override function */
- if (fs->read_inode) {
- retval = (fs->read_inode)(fs, ino, inode);
- if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
- return retval;
- }
- /* Create inode cache if not present */
- if (!fs->icache) {
- retval = create_icache(fs);
- if (retval)
- return retval;
- }
- /* Check to see if it's in the inode cache */
- if (bufsize == sizeof(struct ext2_inode)) {
- /* only old good inode can be retrieve from the cache */
- for (i=0; i < fs->icache->cache_size; i++) {
- if (fs->icache->cache[i].ino == ino) {
- *inode = fs->icache->cache[i].inode;
- return 0;
- }
- }
- }
- if ((ino == 0) || (ino > fs->super->s_inodes_count))
- return EXT2_ET_BAD_INODE_NUM;
- if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
- inodes_per_block = fs->blocksize / EXT2_INODE_SIZE(fs->super);
- block_nr = fs->image_header->offset_inode / fs->blocksize;
- block_nr += (ino - 1) / inodes_per_block;
- offset = ((ino - 1) % inodes_per_block) *
- EXT2_INODE_SIZE(fs->super);
- io = fs->image_io;
- } else {
- group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
- offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
- EXT2_INODE_SIZE(fs->super);
- block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
- if (!fs->group_desc[(unsigned)group].bg_inode_table)
- return EXT2_ET_MISSING_INODE_TABLE;
- block_nr = fs->group_desc[(unsigned)group].bg_inode_table +
- block;
- io = fs->io;
- }
- offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
-
- length = EXT2_INODE_SIZE(fs->super);
- if (bufsize < length)
- length = bufsize;
-
- ptr = (char *) inode;
- while (length) {
- clen = length;
- if ((offset + length) > fs->blocksize)
- clen = fs->blocksize - offset;
-
- if (block_nr != fs->icache->buffer_blk) {
- retval = io_channel_read_blk(io, block_nr, 1,
- fs->icache->buffer);
- if (retval)
- return retval;
- fs->icache->buffer_blk = block_nr;
- }
-
- memcpy(ptr, ((char *) fs->icache->buffer) + (unsigned) offset,
- clen);
-
- offset = 0;
- length -= clen;
- ptr += clen;
- block_nr++;
- }
-
-#if BB_BIG_ENDIAN
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
- ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) inode,
- (struct ext2_inode_large *) inode,
- 0, length);
-#endif
-
- /* Update the inode cache */
- fs->icache->cache_last = (fs->icache->cache_last + 1) %
- fs->icache->cache_size;
- fs->icache->cache[fs->icache->cache_last].ino = ino;
- fs->icache->cache[fs->icache->cache_last].inode = *inode;
-
- return 0;
-}
-
-errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode)
-{
- return ext2fs_read_inode_full(fs, ino, inode,
- sizeof(struct ext2_inode));
-}
-
-errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode * inode, int bufsize)
-{
- unsigned long group, block, block_nr, offset;
- errcode_t retval = 0;
- struct ext2_inode_large temp_inode, *w_inode;
- char *ptr;
- int clen, i, length;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- /* Check to see if user provided an override function */
- if (fs->write_inode) {
- retval = (fs->write_inode)(fs, ino, inode);
- if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
- return retval;
- }
-
- /* Check to see if the inode cache needs to be updated */
- if (fs->icache) {
- for (i=0; i < fs->icache->cache_size; i++) {
- if (fs->icache->cache[i].ino == ino) {
- fs->icache->cache[i].inode = *inode;
- break;
- }
- }
- } else {
- retval = create_icache(fs);
- if (retval)
- return retval;
- }
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
-
- if ((ino == 0) || (ino > fs->super->s_inodes_count))
- return EXT2_ET_BAD_INODE_NUM;
-
- length = bufsize;
- if (length < EXT2_INODE_SIZE(fs->super))
- length = EXT2_INODE_SIZE(fs->super);
-
- if (length > (int) sizeof(struct ext2_inode_large)) {
- w_inode = xmalloc(length);
- } else
- w_inode = &temp_inode;
- memset(w_inode, 0, length);
-
-#if BB_BIG_ENDIAN
- if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))
- ext2fs_swap_inode_full(fs, w_inode,
- (struct ext2_inode_large *) inode,
- 1, bufsize);
- else
-#endif
- memcpy(w_inode, inode, bufsize);
-
- group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
- offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
- EXT2_INODE_SIZE(fs->super);
- block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
- if (!fs->group_desc[(unsigned) group].bg_inode_table)
- return EXT2_ET_MISSING_INODE_TABLE;
- block_nr = fs->group_desc[(unsigned) group].bg_inode_table + block;
-
- offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
-
- length = EXT2_INODE_SIZE(fs->super);
- if (length > bufsize)
- length = bufsize;
-
- ptr = (char *) w_inode;
-
- while (length) {
- clen = length;
- if ((offset + length) > fs->blocksize)
- clen = fs->blocksize - offset;
-
- if (fs->icache->buffer_blk != block_nr) {
- retval = io_channel_read_blk(fs->io, block_nr, 1,
- fs->icache->buffer);
- if (retval)
- goto errout;
- fs->icache->buffer_blk = block_nr;
- }
-
-
- memcpy((char *) fs->icache->buffer + (unsigned) offset,
- ptr, clen);
-
- retval = io_channel_write_blk(fs->io, block_nr, 1,
- fs->icache->buffer);
- if (retval)
- goto errout;
-
- offset = 0;
- ptr += clen;
- length -= clen;
- block_nr++;
- }
-
- fs->flags |= EXT2_FLAG_CHANGED;
-errout:
- if (w_inode && w_inode != &temp_inode)
- free(w_inode);
- return retval;
-}
-
-errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode)
-{
- return ext2fs_write_inode_full(fs, ino, inode,
- sizeof(struct ext2_inode));
-}
-
-/*
- * This function should be called when writing a new inode. It makes
- * sure that extra part of large inodes is initialized properly.
- */
-errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode)
-{
- struct ext2_inode *buf;
- int size = EXT2_INODE_SIZE(fs->super);
- struct ext2_inode_large *large_inode;
-
- if (size == sizeof(struct ext2_inode))
- return ext2fs_write_inode_full(fs, ino, inode,
- sizeof(struct ext2_inode));
-
- buf = xmalloc(size);
-
- memset(buf, 0, size);
- *buf = *inode;
-
- large_inode = (struct ext2_inode_large *) buf;
- large_inode->i_extra_isize = sizeof(struct ext2_inode_large) -
- EXT2_GOOD_OLD_INODE_SIZE;
-
- return ext2fs_write_inode_full(fs, ino, buf, size);
-}
-
-
-errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks)
-{
- struct ext2_inode inode;
- int i;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (ino > fs->super->s_inodes_count)
- return EXT2_ET_BAD_INODE_NUM;
-
- if (fs->get_blocks) {
- if (!(*fs->get_blocks)(fs, ino, blocks))
- return 0;
- }
- retval = ext2fs_read_inode(fs, ino, &inode);
- if (retval)
- return retval;
- for (i=0; i < EXT2_N_BLOCKS; i++)
- blocks[i] = inode.i_block[i];
- return 0;
-}
-
-errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino)
-{
- struct ext2_inode inode;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (ino > fs->super->s_inodes_count)
- return EXT2_ET_BAD_INODE_NUM;
-
- if (fs->check_directory) {
- retval = (fs->check_directory)(fs, ino);
- if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
- return retval;
- }
- retval = ext2fs_read_inode(fs, ino, &inode);
- if (retval)
- return retval;
- if (!LINUX_S_ISDIR(inode.i_mode))
- return EXT2_ET_NO_DIRECTORY;
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * inode_io.c --- This is allows an inode in an ext2 filesystem image
- * to be accessed via the I/O manager interface.
- *
- * Copyright (C) 2002 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * For checking structure magic numbers...
- */
-
-#define EXT2_CHECK_MAGIC(struct, code) \
- if ((struct)->magic != (code)) return (code)
-
-struct inode_private_data {
- int magic;
- char name[32];
- ext2_file_t file;
- ext2_filsys fs;
- ext2_ino_t ino;
- struct ext2_inode inode;
- int flags;
- struct inode_private_data *next;
-};
-
-#define CHANNEL_HAS_INODE 0x8000
-
-static struct inode_private_data *top_intern;
-static int ino_unique = 0;
-
-static errcode_t inode_open(const char *name, int flags, io_channel *channel);
-static errcode_t inode_close(io_channel channel);
-static errcode_t inode_set_blksize(io_channel channel, int blksize);
-static errcode_t inode_read_blk(io_channel channel, unsigned long block,
- int count, void *data);
-static errcode_t inode_write_blk(io_channel channel, unsigned long block,
- int count, const void *data);
-static errcode_t inode_flush(io_channel channel);
-static errcode_t inode_write_byte(io_channel channel, unsigned long offset,
- int size, const void *data);
-
-static struct struct_io_manager struct_inode_manager = {
- EXT2_ET_MAGIC_IO_MANAGER,
- "Inode I/O Manager",
- inode_open,
- inode_close,
- inode_set_blksize,
- inode_read_blk,
- inode_write_blk,
- inode_flush,
- inode_write_byte
-};
-
-io_manager inode_io_manager = &struct_inode_manager;
-
-errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
- struct ext2_inode *inode,
- char **name)
-{
- struct inode_private_data *data;
- errcode_t retval;
-
- if ((retval = ext2fs_get_mem(sizeof(struct inode_private_data),
- &data)))
- return retval;
- data->magic = EXT2_ET_MAGIC_INODE_IO_CHANNEL;
- sprintf(data->name, "%u:%d", ino, ino_unique++);
- data->file = 0;
- data->fs = fs;
- data->ino = ino;
- data->flags = 0;
- if (inode) {
- memcpy(&data->inode, inode, sizeof(struct ext2_inode));
- data->flags |= CHANNEL_HAS_INODE;
- }
- data->next = top_intern;
- top_intern = data;
- *name = data->name;
- return 0;
-}
-
-errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
- char **name)
-{
- return ext2fs_inode_io_intern2(fs, ino, NULL, name);
-}
-
-
-static errcode_t inode_open(const char *name, int flags, io_channel *channel)
-{
- io_channel io = NULL;
- struct inode_private_data *prev, *data = NULL;
- errcode_t retval;
- int open_flags;
-
- if (name == 0)
- return EXT2_ET_BAD_DEVICE_NAME;
-
- for (data = top_intern, prev = NULL; data;
- prev = data, data = data->next)
- if (strcmp(name, data->name) == 0)
- break;
- if (!data)
- return ENOENT;
- if (prev)
- prev->next = data->next;
- else
- top_intern = data->next;
-
- retval = ext2fs_get_mem(sizeof(struct struct_io_channel), &io);
- if (retval)
- goto cleanup;
- memset(io, 0, sizeof(struct struct_io_channel));
-
- io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
- io->manager = inode_io_manager;
- retval = ext2fs_get_mem(strlen(name)+1, &io->name);
- if (retval)
- goto cleanup;
-
- strcpy(io->name, name);
- io->private_data = data;
- io->block_size = 1024;
- io->read_error = 0;
- io->write_error = 0;
- io->refcount = 1;
-
- open_flags = (flags & IO_FLAG_RW) ? EXT2_FILE_WRITE : 0;
- retval = ext2fs_file_open2(data->fs, data->ino,
- (data->flags & CHANNEL_HAS_INODE) ?
- &data->inode : 0, open_flags,
- &data->file);
- if (retval)
- goto cleanup;
-
- *channel = io;
- return 0;
-
-cleanup:
- if (data) {
- ext2fs_free_mem(&data);
- }
- if (io)
- ext2fs_free_mem(&io);
- return retval;
-}
-
-static errcode_t inode_close(io_channel channel)
-{
- struct inode_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct inode_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_INODE_IO_CHANNEL);
-
- if (--channel->refcount > 0)
- return 0;
-
- retval = ext2fs_file_close(data->file);
-
- ext2fs_free_mem(&channel->private_data);
- if (channel->name)
- ext2fs_free_mem(&channel->name);
- ext2fs_free_mem(&channel);
- return retval;
-}
-
-static errcode_t inode_set_blksize(io_channel channel, int blksize)
-{
- struct inode_private_data *data;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct inode_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_INODE_IO_CHANNEL);
-
- channel->block_size = blksize;
- return 0;
-}
-
-
-static errcode_t inode_read_blk(io_channel channel, unsigned long block,
- int count, void *buf)
-{
- struct inode_private_data *data;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct inode_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_INODE_IO_CHANNEL);
-
- if ((retval = ext2fs_file_lseek(data->file,
- block * channel->block_size,
- EXT2_SEEK_SET, 0)))
- return retval;
-
- count = (count < 0) ? -count : (count * channel->block_size);
-
- return ext2fs_file_read(data->file, buf, count, 0);
-}
-
-static errcode_t inode_write_blk(io_channel channel, unsigned long block,
- int count, const void *buf)
-{
- struct inode_private_data *data;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct inode_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_INODE_IO_CHANNEL);
-
- if ((retval = ext2fs_file_lseek(data->file,
- block * channel->block_size,
- EXT2_SEEK_SET, 0)))
- return retval;
-
- count = (count < 0) ? -count : (count * channel->block_size);
-
- return ext2fs_file_write(data->file, buf, count, 0);
-}
-
-static errcode_t inode_write_byte(io_channel channel, unsigned long offset,
- int size, const void *buf)
-{
- struct inode_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct inode_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_INODE_IO_CHANNEL);
-
- if ((retval = ext2fs_file_lseek(data->file, offset,
- EXT2_SEEK_SET, 0)))
- return retval;
-
- return ext2fs_file_write(data->file, buf, size, 0);
-}
-
-/*
- * Flush data buffers to disk.
- */
-static errcode_t inode_flush(io_channel channel)
-{
- struct inode_private_data *data;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct inode_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_INODE_IO_CHANNEL);
-
- return ext2fs_file_flush(data->file);
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * io_manager.c --- the I/O manager abstraction
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t io_channel_set_options(io_channel channel, const char *opts)
-{
- errcode_t retval = 0;
- char *next, *ptr, *options, *arg;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
-
- if (!opts)
- return 0;
-
- if (!channel->manager->set_option)
- return EXT2_ET_INVALID_ARGUMENT;
-
- options = malloc(strlen(opts)+1);
- if (!options)
- return EXT2_ET_NO_MEMORY;
- strcpy(options, opts);
- ptr = options;
-
- while (ptr && *ptr) {
- next = strchr(ptr, '&');
- if (next)
- *next++ = 0;
-
- arg = strchr(ptr, '=');
- if (arg)
- *arg++ = 0;
-
- retval = (channel->manager->set_option)(channel, ptr, arg);
- if (retval)
- break;
- ptr = next;
- }
- free(options);
- return retval;
-}
-
-errcode_t io_channel_write_byte(io_channel channel, unsigned long offset,
- int count, const void *data)
-{
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
-
- if (channel->manager->write_byte)
- return channel->manager->write_byte(channel, offset,
- count, data);
-
- return EXT2_ET_UNIMPLEMENTED;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * irel.h
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-struct ext2_inode_reference {
- blk_t block;
- __u16 offset;
-};
-
-struct ext2_inode_relocate_entry {
- ext2_ino_t new;
- ext2_ino_t orig;
- __u16 flags;
- __u16 max_refs;
-};
-
-typedef struct ext2_inode_relocation_table *ext2_irel;
-
-struct ext2_inode_relocation_table {
- __u32 magic;
- char *name;
- ext2_ino_t current;
- void *priv_data;
-
- /*
- * Add an inode relocation entry.
- */
- errcode_t (*put)(ext2_irel irel, ext2_ino_t old,
- struct ext2_inode_relocate_entry *ent);
- /*
- * Get an inode relocation entry.
- */
- errcode_t (*get)(ext2_irel irel, ext2_ino_t old,
- struct ext2_inode_relocate_entry *ent);
-
- /*
- * Get an inode relocation entry by its original inode number
- */
- errcode_t (*get_by_orig)(ext2_irel irel, ext2_ino_t orig, ext2_ino_t *old,
- struct ext2_inode_relocate_entry *ent);
-
- /*
- * Initialize for iterating over the inode relocation entries.
- */
- errcode_t (*start_iter)(ext2_irel irel);
-
- /*
- * The iterator function for the inode relocation entries.
- * Returns an inode number of 0 when out of entries.
- */
- errcode_t (*next)(ext2_irel irel, ext2_ino_t *old,
- struct ext2_inode_relocate_entry *ent);
-
- /*
- * Add an inode reference (i.e., note the fact that a
- * particular block/offset contains a reference to an inode)
- */
- errcode_t (*add_ref)(ext2_irel irel, ext2_ino_t ino,
- struct ext2_inode_reference *ref);
-
- /*
- * Initialize for iterating over the inode references for a
- * particular inode.
- */
- errcode_t (*start_iter_ref)(ext2_irel irel, ext2_ino_t ino);
-
- /*
- * The iterator function for the inode references for an
- * inode. The references for only one inode can be interator
- * over at a time, as the iterator state is stored in ext2_irel.
- */
- errcode_t (*next_ref)(ext2_irel irel,
- struct ext2_inode_reference *ref);
-
- /*
- * Move the inode relocation table from one inode number to
- * another. Note that the inode references also must move.
- */
- errcode_t (*move)(ext2_irel irel, ext2_ino_t old, ext2_ino_t new);
-
- /*
- * Remove an inode relocation entry, along with all of the
- * inode references.
- */
- errcode_t (*delete)(ext2_irel irel, ext2_ino_t old);
-
- /*
- * Free the inode relocation table.
- */
- errcode_t (*free)(ext2_irel irel);
-};
-
-errcode_t ext2fs_irel_memarray_create(char *name, ext2_ino_t max_inode,
- ext2_irel *irel);
-
-#define ext2fs_irel_put(irel, old, ent) ((irel)->put((irel), old, ent))
-#define ext2fs_irel_get(irel, old, ent) ((irel)->get((irel), old, ent))
-#define ext2fs_irel_get_by_orig(irel, orig, old, ent) \
- ((irel)->get_by_orig((irel), orig, old, ent))
-#define ext2fs_irel_start_iter(irel) ((irel)->start_iter((irel)))
-#define ext2fs_irel_next(irel, old, ent) ((irel)->next((irel), old, ent))
-#define ext2fs_irel_add_ref(irel, ino, ref) ((irel)->add_ref((irel), ino, ref))
-#define ext2fs_irel_start_iter_ref(irel, ino) ((irel)->start_iter_ref((irel), ino))
-#define ext2fs_irel_next_ref(irel, ref) ((irel)->next_ref((irel), ref))
-#define ext2fs_irel_move(irel, old, new) ((irel)->move((irel), old, new))
-#define ext2fs_irel_delete(irel, old) ((irel)->delete((irel), old))
-#define ext2fs_irel_free(irel) ((irel)->free((irel)))
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * irel_ma.c
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-#include "irel.h"
-
-static errcode_t ima_put(ext2_irel irel, ext2_ino_t old,
- struct ext2_inode_relocate_entry *ent);
-static errcode_t ima_get(ext2_irel irel, ext2_ino_t old,
- struct ext2_inode_relocate_entry *ent);
-static errcode_t ima_get_by_orig(ext2_irel irel, ext2_ino_t orig, ext2_ino_t *old,
- struct ext2_inode_relocate_entry *ent);
-static errcode_t ima_start_iter(ext2_irel irel);
-static errcode_t ima_next(ext2_irel irel, ext2_ino_t *old,
- struct ext2_inode_relocate_entry *ent);
-static errcode_t ima_add_ref(ext2_irel irel, ext2_ino_t ino,
- struct ext2_inode_reference *ref);
-static errcode_t ima_start_iter_ref(ext2_irel irel, ext2_ino_t ino);
-static errcode_t ima_next_ref(ext2_irel irel, struct ext2_inode_reference *ref);
-static errcode_t ima_move(ext2_irel irel, ext2_ino_t old, ext2_ino_t new);
-static errcode_t ima_delete(ext2_irel irel, ext2_ino_t old);
-static errcode_t ima_free(ext2_irel irel);
-
-/*
- * This data structure stores the array of inode references; there is
- * a structure for each inode.
- */
-struct inode_reference_entry {
- __u16 num;
- struct ext2_inode_reference *refs;
-};
-
-struct irel_ma {
- __u32 magic;
- ext2_ino_t max_inode;
- ext2_ino_t ref_current;
- int ref_iter;
- ext2_ino_t *orig_map;
- struct ext2_inode_relocate_entry *entries;
- struct inode_reference_entry *ref_entries;
-};
-
-errcode_t ext2fs_irel_memarray_create(char *name, ext2_ino_t max_inode,
- ext2_irel *new_irel)
-{
- ext2_irel irel = 0;
- errcode_t retval;
- struct irel_ma *ma = 0;
- size_t size;
-
- *new_irel = 0;
-
- /*
- * Allocate memory structures
- */
- retval = ext2fs_get_mem(sizeof(struct ext2_inode_relocation_table),
- &irel);
- if (retval)
- goto errout;
- memset(irel, 0, sizeof(struct ext2_inode_relocation_table));
-
- retval = ext2fs_get_mem(strlen(name)+1, &irel->name);
- if (retval)
- goto errout;
- strcpy(irel->name, name);
-
- retval = ext2fs_get_mem(sizeof(struct irel_ma), &ma);
- if (retval)
- goto errout;
- memset(ma, 0, sizeof(struct irel_ma));
- irel->priv_data = ma;
-
- size = (size_t) (sizeof(ext2_ino_t) * (max_inode+1));
- retval = ext2fs_get_mem(size, &ma->orig_map);
- if (retval)
- goto errout;
- memset(ma->orig_map, 0, size);
-
- size = (size_t) (sizeof(struct ext2_inode_relocate_entry) *
- (max_inode+1));
- retval = ext2fs_get_mem(size, &ma->entries);
- if (retval)
- goto errout;
- memset(ma->entries, 0, size);
-
- size = (size_t) (sizeof(struct inode_reference_entry) *
- (max_inode+1));
- retval = ext2fs_get_mem(size, &ma->ref_entries);
- if (retval)
- goto errout;
- memset(ma->ref_entries, 0, size);
- ma->max_inode = max_inode;
-
- /*
- * Fill in the irel data structure
- */
- irel->put = ima_put;
- irel->get = ima_get;
- irel->get_by_orig = ima_get_by_orig;
- irel->start_iter = ima_start_iter;
- irel->next = ima_next;
- irel->add_ref = ima_add_ref;
- irel->start_iter_ref = ima_start_iter_ref;
- irel->next_ref = ima_next_ref;
- irel->move = ima_move;
- irel->delete = ima_delete;
- irel->free = ima_free;
-
- *new_irel = irel;
- return 0;
-
-errout:
- ima_free(irel);
- return retval;
-}
-
-static errcode_t ima_put(ext2_irel irel, ext2_ino_t old,
- struct ext2_inode_relocate_entry *ent)
-{
- struct inode_reference_entry *ref_ent;
- struct irel_ma *ma;
- errcode_t retval;
- size_t size, old_size;
-
- ma = irel->priv_data;
- if (old > ma->max_inode)
- return EXT2_ET_INVALID_ARGUMENT;
-
- /*
- * Force the orig field to the correct value; the application
- * program shouldn't be messing with this field.
- */
- if (ma->entries[(unsigned) old].new == 0)
- ent->orig = old;
- else
- ent->orig = ma->entries[(unsigned) old].orig;
-
- /*
- * If max_refs has changed, reallocate the refs array
- */
- ref_ent = ma->ref_entries + (unsigned) old;
- if (ref_ent->refs && ent->max_refs !=
- ma->entries[(unsigned) old].max_refs) {
- size = (sizeof(struct ext2_inode_reference) * ent->max_refs);
- old_size = (sizeof(struct ext2_inode_reference) *
- ma->entries[(unsigned) old].max_refs);
- retval = ext2fs_resize_mem(old_size, size, &ref_ent->refs);
- if (retval)
- return retval;
- }
-
- ma->entries[(unsigned) old] = *ent;
- ma->orig_map[(unsigned) ent->orig] = old;
- return 0;
-}
-
-static errcode_t ima_get(ext2_irel irel, ext2_ino_t old,
- struct ext2_inode_relocate_entry *ent)
-{
- struct irel_ma *ma;
-
- ma = irel->priv_data;
- if (old > ma->max_inode)
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned) old].new == 0)
- return ENOENT;
- *ent = ma->entries[(unsigned) old];
- return 0;
-}
-
-static errcode_t ima_get_by_orig(ext2_irel irel, ext2_ino_t orig, ext2_ino_t *old,
- struct ext2_inode_relocate_entry *ent)
-{
- struct irel_ma *ma;
- ext2_ino_t ino;
-
- ma = irel->priv_data;
- if (orig > ma->max_inode)
- return EXT2_ET_INVALID_ARGUMENT;
- ino = ma->orig_map[(unsigned) orig];
- if (ino == 0)
- return ENOENT;
- *old = ino;
- *ent = ma->entries[(unsigned) ino];
- return 0;
-}
-
-static errcode_t ima_start_iter(ext2_irel irel)
-{
- irel->current = 0;
- return 0;
-}
-
-static errcode_t ima_next(ext2_irel irel, ext2_ino_t *old,
- struct ext2_inode_relocate_entry *ent)
-{
- struct irel_ma *ma;
-
- ma = irel->priv_data;
- while (++irel->current < ma->max_inode) {
- if (ma->entries[(unsigned) irel->current].new == 0)
- continue;
- *old = irel->current;
- *ent = ma->entries[(unsigned) irel->current];
- return 0;
- }
- *old = 0;
- return 0;
-}
-
-static errcode_t ima_add_ref(ext2_irel irel, ext2_ino_t ino,
- struct ext2_inode_reference *ref)
-{
- struct irel_ma *ma;
- size_t size;
- struct inode_reference_entry *ref_ent;
- struct ext2_inode_relocate_entry *ent;
- errcode_t retval;
-
- ma = irel->priv_data;
- if (ino > ma->max_inode)
- return EXT2_ET_INVALID_ARGUMENT;
-
- ref_ent = ma->ref_entries + (unsigned) ino;
- ent = ma->entries + (unsigned) ino;
-
- /*
- * If the inode reference array doesn't exist, create it.
- */
- if (ref_ent->refs == 0) {
- size = (size_t) ((sizeof(struct ext2_inode_reference) *
- ent->max_refs));
- retval = ext2fs_get_mem(size, &ref_ent->refs);
- if (retval)
- return retval;
- memset(ref_ent->refs, 0, size);
- ref_ent->num = 0;
- }
-
- if (ref_ent->num >= ent->max_refs)
- return EXT2_ET_TOO_MANY_REFS;
-
- ref_ent->refs[(unsigned) ref_ent->num++] = *ref;
- return 0;
-}
-
-static errcode_t ima_start_iter_ref(ext2_irel irel, ext2_ino_t ino)
-{
- struct irel_ma *ma;
-
- ma = irel->priv_data;
- if (ino > ma->max_inode)
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned) ino].new == 0)
- return ENOENT;
- ma->ref_current = ino;
- ma->ref_iter = 0;
- return 0;
-}
-
-static errcode_t ima_next_ref(ext2_irel irel,
- struct ext2_inode_reference *ref)
-{
- struct irel_ma *ma;
- struct inode_reference_entry *ref_ent;
-
- ma = irel->priv_data;
-
- ref_ent = ma->ref_entries + ma->ref_current;
-
- if ((ref_ent->refs == NULL) ||
- (ma->ref_iter >= ref_ent->num)) {
- ref->block = 0;
- ref->offset = 0;
- return 0;
- }
- *ref = ref_ent->refs[ma->ref_iter++];
- return 0;
-}
-
-
-static errcode_t ima_move(ext2_irel irel, ext2_ino_t old, ext2_ino_t new)
-{
- struct irel_ma *ma;
-
- ma = irel->priv_data;
- if ((old > ma->max_inode) || (new > ma->max_inode))
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned) old].new == 0)
- return ENOENT;
-
- ma->entries[(unsigned) new] = ma->entries[(unsigned) old];
- ext2fs_free_mem(&ma->ref_entries[(unsigned) new].refs);
- ma->ref_entries[(unsigned) new] = ma->ref_entries[(unsigned) old];
-
- ma->entries[(unsigned) old].new = 0;
- ma->ref_entries[(unsigned) old].num = 0;
- ma->ref_entries[(unsigned) old].refs = 0;
-
- ma->orig_map[ma->entries[new].orig] = new;
- return 0;
-}
-
-static errcode_t ima_delete(ext2_irel irel, ext2_ino_t old)
-{
- struct irel_ma *ma;
-
- ma = irel->priv_data;
- if (old > ma->max_inode)
- return EXT2_ET_INVALID_ARGUMENT;
- if (ma->entries[(unsigned) old].new == 0)
- return ENOENT;
-
- ma->entries[old].new = 0;
- ext2fs_free_mem(&ma->ref_entries[(unsigned) old].refs);
- ma->orig_map[ma->entries[(unsigned) old].orig] = 0;
-
- ma->ref_entries[(unsigned) old].num = 0;
- ma->ref_entries[(unsigned) old].refs = 0;
- return 0;
-}
-
-static errcode_t ima_free(ext2_irel irel)
-{
- struct irel_ma *ma;
- ext2_ino_t ino;
-
- if (!irel)
- return 0;
-
- ma = irel->priv_data;
-
- if (ma) {
- ext2fs_free_mem(&ma->orig_map);
- ext2fs_free_mem(&ma->entries);
- if (ma->ref_entries) {
- for (ino = 0; ino <= ma->max_inode; ino++) {
- ext2fs_free_mem(&ma->ref_entries[(unsigned) ino].refs);
- }
- ext2fs_free_mem(&ma->ref_entries);
- }
- ext2fs_free_mem(&ma);
- }
- ext2fs_free_mem(&irel->name);
- ext2fs_free_mem(&irel);
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * ismounted.c --- Check to see if the filesystem was mounted
- *
- * Copyright (C) 1995,1996,1997,1998,1999,2000 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_LINUX_FD_H
-#include <linux/fd.h>
-#endif
-#ifdef HAVE_MNTENT_H
-#include <mntent.h>
-#endif
-#ifdef HAVE_GETMNTINFO
-#include <paths.h>
-#include <sys/param.h>
-#include <sys/mount.h>
-#endif /* HAVE_GETMNTINFO */
-#include <string.h>
-#include <sys/stat.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#ifdef HAVE_MNTENT_H
-/*
- * Helper function which checks a file in /etc/mtab format to see if a
- * filesystem is mounted. Returns an error if the file doesn't exist
- * or can't be opened.
- */
-static errcode_t check_mntent_file(const char *mtab_file, const char *file,
- int *mount_flags, char *mtpt, int mtlen)
-{
- struct mntent *mnt;
- struct stat st_buf;
- errcode_t retval = 0;
- dev_t file_dev=0, file_rdev=0;
- ino_t file_ino=0;
- FILE *f;
- int fd;
-
- *mount_flags = 0;
- if ((f = setmntent (mtab_file, "r")) == NULL)
- return errno;
- if (stat(file, &st_buf) == 0) {
- if (S_ISBLK(st_buf.st_mode)) {
-#ifndef __GNU__ /* The GNU hurd is broken with respect to stat devices */
- file_rdev = st_buf.st_rdev;
-#endif /* __GNU__ */
- } else {
- file_dev = st_buf.st_dev;
- file_ino = st_buf.st_ino;
- }
- }
- while ((mnt = getmntent (f)) != NULL) {
- if (strcmp(file, mnt->mnt_fsname) == 0)
- break;
- if (stat(mnt->mnt_fsname, &st_buf) == 0) {
- if (S_ISBLK(st_buf.st_mode)) {
-#ifndef __GNU__
- if (file_rdev && (file_rdev == st_buf.st_rdev))
- break;
-#endif /* __GNU__ */
- } else {
- if (file_dev && ((file_dev == st_buf.st_dev) &&
- (file_ino == st_buf.st_ino)))
- break;
- }
- }
- }
-
- if (mnt == 0) {
-#ifndef __GNU__ /* The GNU hurd is broken with respect to stat devices */
- /*
- * Do an extra check to see if this is the root device. We
- * can't trust /etc/mtab, and /proc/mounts will only list
- * /dev/root for the root filesystem. Argh. Instead we
- * check if the given device has the same major/minor number
- * as the device that the root directory is on.
- */
- if (file_rdev && stat("/", &st_buf) == 0) {
- if (st_buf.st_dev == file_rdev) {
- *mount_flags = EXT2_MF_MOUNTED;
- if (mtpt)
- strncpy(mtpt, "/", mtlen);
- goto is_root;
- }
- }
-#endif /* __GNU__ */
- goto errout;
- }
-#ifndef __GNU__ /* The GNU hurd is deficient; what else is new? */
- /* Validate the entry in case /etc/mtab is out of date */
- /*
- * We need to be paranoid, because some broken distributions
- * (read: Slackware) don't initialize /etc/mtab before checking
- * all of the non-root filesystems on the disk.
- */
- if (stat(mnt->mnt_dir, &st_buf) < 0) {
- retval = errno;
- if (retval == ENOENT) {
-#ifdef DEBUG
- printf("Bogus entry in %s! (%s does not exist)\n",
- mtab_file, mnt->mnt_dir);
-#endif /* DEBUG */
- retval = 0;
- }
- goto errout;
- }
- if (file_rdev && (st_buf.st_dev != file_rdev)) {
-#ifdef DEBUG
- printf("Bogus entry in %s! (%s not mounted on %s)\n",
- mtab_file, file, mnt->mnt_dir);
-#endif /* DEBUG */
- goto errout;
- }
-#endif /* __GNU__ */
- *mount_flags = EXT2_MF_MOUNTED;
-
-#ifdef MNTOPT_RO
- /* Check to see if the ro option is set */
- if (hasmntopt(mnt, MNTOPT_RO))
- *mount_flags |= EXT2_MF_READONLY;
-#endif
-
- if (mtpt)
- strncpy(mtpt, mnt->mnt_dir, mtlen);
- /*
- * Check to see if we're referring to the root filesystem.
- * If so, do a manual check to see if we can open /etc/mtab
- * read/write, since if the root is mounted read/only, the
- * contents of /etc/mtab may not be accurate.
- */
- if (LONE_CHAR(mnt->mnt_dir, '/')) {
-is_root:
-#define TEST_FILE "/.ismount-test-file"
- *mount_flags |= EXT2_MF_ISROOT;
- fd = open(TEST_FILE, O_RDWR|O_CREAT);
- if (fd < 0) {
- if (errno == EROFS)
- *mount_flags |= EXT2_MF_READONLY;
- } else
- close(fd);
- (void) unlink(TEST_FILE);
- }
- retval = 0;
-errout:
- endmntent (f);
- return retval;
-}
-
-static errcode_t check_mntent(const char *file, int *mount_flags,
- char *mtpt, int mtlen)
-{
- errcode_t retval;
-
-#ifdef DEBUG
- retval = check_mntent_file("/tmp/mtab", file, mount_flags,
- mtpt, mtlen);
- if (retval == 0)
- return 0;
-#endif /* DEBUG */
-#ifdef __linux__
- retval = check_mntent_file("/proc/mounts", file, mount_flags,
- mtpt, mtlen);
- if (retval == 0 && (*mount_flags != 0))
- return 0;
-#endif /* __linux__ */
-#if defined(MOUNTED) || defined(_PATH_MOUNTED)
-#ifndef MOUNTED
-#define MOUNTED _PATH_MOUNTED
-#endif /* MOUNTED */
- retval = check_mntent_file(MOUNTED, file, mount_flags, mtpt, mtlen);
- return retval;
-#else
- *mount_flags = 0;
- return 0;
-#endif /* defined(MOUNTED) || defined(_PATH_MOUNTED) */
-}
-
-#else
-#if defined(HAVE_GETMNTINFO)
-
-static errcode_t check_getmntinfo(const char *file, int *mount_flags,
- char *mtpt, int mtlen)
-{
- struct statfs *mp;
- int len, n;
- const char *s1;
- char *s2;
-
- n = getmntinfo(&mp, MNT_NOWAIT);
- if (n == 0)
- return errno;
-
- len = sizeof(_PATH_DEV) - 1;
- s1 = file;
- if (strncmp(_PATH_DEV, s1, len) == 0)
- s1 += len;
-
- *mount_flags = 0;
- while (--n >= 0) {
- s2 = mp->f_mntfromname;
- if (strncmp(_PATH_DEV, s2, len) == 0) {
- s2 += len - 1;
- *s2 = 'r';
- }
- if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) {
- *mount_flags = EXT2_MF_MOUNTED;
- break;
- }
- ++mp;
- }
- if (mtpt)
- strncpy(mtpt, mp->f_mntonname, mtlen);
- return 0;
-}
-#endif /* HAVE_GETMNTINFO */
-#endif /* HAVE_MNTENT_H */
-
-/*
- * Check to see if we're dealing with the swap device.
- */
-static int is_swap_device(const char *file)
-{
- FILE *f;
- char buf[1024], *cp;
- dev_t file_dev;
- struct stat st_buf;
- int ret = 0;
-
- file_dev = 0;
-#ifndef __GNU__ /* The GNU hurd is broken with respect to stat devices */
- if ((stat(file, &st_buf) == 0) &&
- S_ISBLK(st_buf.st_mode))
- file_dev = st_buf.st_rdev;
-#endif /* __GNU__ */
-
- if (!(f = fopen("/proc/swaps", "r")))
- return 0;
- /* Skip the first line */
- fgets(buf, sizeof(buf), f);
- while (!feof(f)) {
- if (!fgets(buf, sizeof(buf), f))
- break;
- if ((cp = strchr(buf, ' ')) != NULL)
- *cp = 0;
- if ((cp = strchr(buf, '\t')) != NULL)
- *cp = 0;
- if (strcmp(buf, file) == 0) {
- ret++;
- break;
- }
-#ifndef __GNU__
- if (file_dev && (stat(buf, &st_buf) == 0) &&
- S_ISBLK(st_buf.st_mode) &&
- file_dev == st_buf.st_rdev) {
- ret++;
- break;
- }
-#endif /* __GNU__ */
- }
- fclose(f);
- return ret;
-}
-
-
-/*
- * ext2fs_check_mount_point() returns 1 if the device is mounted, 0
- * otherwise. If mtpt is non-NULL, the directory where the device is
- * mounted is copied to where mtpt is pointing, up to mtlen
- * characters.
- */
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
- char *mtpt, int mtlen)
-{
- if (is_swap_device(device)) {
- *mount_flags = EXT2_MF_MOUNTED | EXT2_MF_SWAP;
- strncpy(mtpt, "<swap>", mtlen);
- return 0;
- }
-#ifdef HAVE_MNTENT_H
- return check_mntent(device, mount_flags, mtpt, mtlen);
-#else
-#ifdef HAVE_GETMNTINFO
- return check_getmntinfo(device, mount_flags, mtpt, mtlen);
-#else
-#ifdef __GNUC__
- #warning "Can't use getmntent or getmntinfo to check for mounted filesystems!"
-#endif
- *mount_flags = 0;
- return 0;
-#endif /* HAVE_GETMNTINFO */
-#endif /* HAVE_MNTENT_H */
-}
-
-/*
- * ext2fs_check_if_mounted() sets the mount_flags EXT2_MF_MOUNTED,
- * EXT2_MF_READONLY, and EXT2_MF_ROOT
- *
- */
-errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags)
-{
- return ext2fs_check_mount_point(file, mount_flags, NULL, 0);
-}
-
-#ifdef DEBUG
-int main(int argc, char **argv)
-{
- int retval, mount_flags;
- char mntpt[80];
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s device\n", argv[0]);
- exit(1);
- }
-
- mntpt[0] = 0;
- retval = ext2fs_check_mount_point(argv[1], &mount_flags,
- mntpt, sizeof(mntpt));
- if (retval) {
- com_err(argv[0], retval,
- "while calling ext2fs_check_if_mounted");
- exit(1);
- }
- printf("Device %s reports flags %02x\n", argv[1], mount_flags);
- if (mount_flags & EXT2_MF_BUSY)
- printf("\t%s is apparently in use.\n", argv[1]);
- if (mount_flags & EXT2_MF_MOUNTED)
- printf("\t%s is mounted.\n", argv[1]);
- if (mount_flags & EXT2_MF_SWAP)
- printf("\t%s is a swap device.\n", argv[1]);
- if (mount_flags & EXT2_MF_READONLY)
- printf("\t%s is read-only.\n", argv[1]);
- if (mount_flags & EXT2_MF_ISROOT)
- printf("\t%s is the root filesystem.\n", argv[1]);
- if (mntpt[0])
- printf("\t%s is mounted on %s.\n", argv[1], mntpt);
- exit(0);
-}
-#endif /* DEBUG */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * jfs_dat.h --- stripped down header file which only contains the JFS
- * on-disk data structures
- */
-
-#define JFS_MAGIC_NUMBER 0xc03b3998U /* The first 4 bytes of /dev/random! */
-
-/*
- * On-disk structures
- */
-
-/*
- * Descriptor block types:
- */
-
-#define JFS_DESCRIPTOR_BLOCK 1
-#define JFS_COMMIT_BLOCK 2
-#define JFS_SUPERBLOCK 3
-
-/*
- * Standard header for all descriptor blocks:
- */
-typedef struct journal_header_s
-{
- __u32 h_magic;
- __u32 h_blocktype;
- __u32 h_sequence;
-} journal_header_t;
-
-
-/*
- * The block tag: used to describe a single buffer in the journal
- */
-typedef struct journal_block_tag_s
-{
- __u32 t_blocknr; /* The on-disk block number */
- __u32 t_flags; /* See below */
-} journal_block_tag_t;
-
-/* Definitions for the journal tag flags word: */
-#define JFS_FLAG_ESCAPE 1 /* on-disk block is escaped */
-#define JFS_FLAG_SAME_UUID 2 /* block has same uuid as previous */
-#define JFS_FLAG_DELETED 4 /* block deleted by this transaction */
-#define JFS_FLAG_LAST_TAG 8 /* last tag in this descriptor block */
-
-
-/*
- * The journal superblock
- */
-typedef struct journal_superblock_s
-{
- journal_header_t s_header;
-
- /* Static information describing the journal */
- __u32 s_blocksize; /* journal device blocksize */
- __u32 s_maxlen; /* total blocks in journal file */
- __u32 s_first; /* first block of log information */
-
- /* Dynamic information describing the current state of the log */
- __u32 s_sequence; /* first commit ID expected in log */
- __u32 s_start; /* blocknr of start of log */
-
-} journal_superblock_t;
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * linux/include/linux/jbd.h
- *
- * Written by Stephen C. Tweedie <sct@redhat.com>
- *
- * Copyright 1998-2000 Red Hat, Inc --- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * Definitions for transaction data structures for the buffer cache
- * filesystem journaling support.
- */
-
-#ifndef _LINUX_JBD_H
-#define _LINUX_JBD_H
-
-#include <sys/types.h>
-#include <linux/types.h>
-#include "ext2fs.h"
-
-/*
- * Standard header for all descriptor blocks:
- */
-
-typedef struct journal_header_s
-{
- __u32 h_magic;
- __u32 h_blocktype;
- __u32 h_sequence;
-} journal_header_t;
-
-/*
- * This is the global e2fsck structure.
- */
-typedef struct e2fsck_struct *e2fsck_t;
-
-
-struct inode {
- e2fsck_t i_ctx;
- ext2_ino_t i_ino;
- struct ext2_inode i_ext2;
-};
-
-
-/*
- * The journal superblock. All fields are in big-endian byte order.
- */
-typedef struct journal_superblock_s
-{
-/* 0x0000 */
- journal_header_t s_header;
-
-/* 0x000C */
- /* Static information describing the journal */
- __u32 s_blocksize; /* journal device blocksize */
- __u32 s_maxlen; /* total blocks in journal file */
- __u32 s_first; /* first block of log information */
-
-/* 0x0018 */
- /* Dynamic information describing the current state of the log */
- __u32 s_sequence; /* first commit ID expected in log */
- __u32 s_start; /* blocknr of start of log */
-
-/* 0x0020 */
- /* Error value, as set by journal_abort(). */
- __s32 s_errno;
-
-/* 0x0024 */
- /* Remaining fields are only valid in a version-2 superblock */
- __u32 s_feature_compat; /* compatible feature set */
- __u32 s_feature_incompat; /* incompatible feature set */
- __u32 s_feature_ro_compat; /* readonly-compatible feature set */
-/* 0x0030 */
- __u8 s_uuid[16]; /* 128-bit uuid for journal */
-
-/* 0x0040 */
- __u32 s_nr_users; /* Nr of filesystems sharing log */
-
- __u32 s_dynsuper; /* Blocknr of dynamic superblock copy*/
-
-/* 0x0048 */
- __u32 s_max_transaction; /* Limit of journal blocks per trans.*/
- __u32 s_max_trans_data; /* Limit of data blocks per trans. */
-
-/* 0x0050 */
- __u32 s_padding[44];
-
-/* 0x0100 */
- __u8 s_users[16*48]; /* ids of all fs'es sharing the log */
-/* 0x0400 */
-} journal_superblock_t;
-
-
-extern int journal_blocks_per_page(struct inode *inode);
-extern int jbd_blocks_per_page(struct inode *inode);
-
-#define JFS_MIN_JOURNAL_BLOCKS 1024
-
-
-/*
- * Internal structures used by the logging mechanism:
- */
-
-#define JFS_MAGIC_NUMBER 0xc03b3998U /* The first 4 bytes of /dev/random! */
-
-/*
- * Descriptor block types:
- */
-
-#define JFS_DESCRIPTOR_BLOCK 1
-#define JFS_COMMIT_BLOCK 2
-#define JFS_SUPERBLOCK_V1 3
-#define JFS_SUPERBLOCK_V2 4
-#define JFS_REVOKE_BLOCK 5
-
-/*
- * The block tag: used to describe a single buffer in the journal
- */
-typedef struct journal_block_tag_s
-{
- __u32 t_blocknr; /* The on-disk block number */
- __u32 t_flags; /* See below */
-} journal_block_tag_t;
-
-/*
- * The revoke descriptor: used on disk to describe a series of blocks to
- * be revoked from the log
- */
-typedef struct journal_revoke_header_s
-{
- journal_header_t r_header;
- int r_count; /* Count of bytes used in the block */
-} journal_revoke_header_t;
-
-
-/* Definitions for the journal tag flags word: */
-#define JFS_FLAG_ESCAPE 1 /* on-disk block is escaped */
-#define JFS_FLAG_SAME_UUID 2 /* block has same uuid as previous */
-#define JFS_FLAG_DELETED 4 /* block deleted by this transaction */
-#define JFS_FLAG_LAST_TAG 8 /* last tag in this descriptor block */
-
-
-
-
-#define JFS_HAS_COMPAT_FEATURE(j,mask) \
- ((j)->j_format_version >= 2 && \
- ((j)->j_superblock->s_feature_compat & cpu_to_be32((mask))))
-#define JFS_HAS_RO_COMPAT_FEATURE(j,mask) \
- ((j)->j_format_version >= 2 && \
- ((j)->j_superblock->s_feature_ro_compat & cpu_to_be32((mask))))
-#define JFS_HAS_INCOMPAT_FEATURE(j,mask) \
- ((j)->j_format_version >= 2 && \
- ((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask))))
-
-#define JFS_FEATURE_INCOMPAT_REVOKE 0x00000001
-
-/* Features known to this kernel version: */
-#define JFS_KNOWN_COMPAT_FEATURES 0
-#define JFS_KNOWN_ROCOMPAT_FEATURES 0
-#define JFS_KNOWN_INCOMPAT_FEATURES JFS_FEATURE_INCOMPAT_REVOKE
-
-/* Comparison functions for transaction IDs: perform comparisons using
- * modulo arithmetic so that they work over sequence number wraps. */
-
-
-/*
- * Definitions which augment the buffer_head layer
- */
-
-/* journaling buffer types */
-#define BJ_None 0 /* Not journaled */
-#define BJ_SyncData 1 /* Normal data: flush before commit */
-#define BJ_AsyncData 2 /* writepage data: wait on it before commit */
-#define BJ_Metadata 3 /* Normal journaled metadata */
-#define BJ_Forget 4 /* Buffer superceded by this transaction */
-#define BJ_IO 5 /* Buffer is for temporary IO use */
-#define BJ_Shadow 6 /* Buffer contents being shadowed to the log */
-#define BJ_LogCtl 7 /* Buffer contains log descriptors */
-#define BJ_Reserved 8 /* Buffer is reserved for access by journal */
-#define BJ_Types 9
-
-
-struct kdev_s {
- e2fsck_t k_ctx;
- int k_dev;
-};
-
-typedef struct kdev_s *kdev_t;
-typedef unsigned int tid_t;
-
-struct journal_s
-{
- unsigned long j_flags;
- int j_errno;
- struct buffer_head * j_sb_buffer;
- struct journal_superblock_s *j_superblock;
- int j_format_version;
- unsigned long j_head;
- unsigned long j_tail;
- unsigned long j_free;
- unsigned long j_first, j_last;
- kdev_t j_dev;
- kdev_t j_fs_dev;
- int j_blocksize;
- unsigned int j_blk_offset;
- unsigned int j_maxlen;
- struct inode * j_inode;
- tid_t j_tail_sequence;
- tid_t j_transaction_sequence;
- __u8 j_uuid[16];
- struct jbd_revoke_table_s *j_revoke;
-};
-
-typedef struct journal_s journal_t;
-
-extern int journal_recover (journal_t *journal);
-extern int journal_skip_recovery (journal_t *);
-
-/* Primary revoke support */
-extern int journal_init_revoke(journal_t *, int);
-extern void journal_destroy_revoke_caches(void);
-extern int journal_init_revoke_caches(void);
-
-/* Recovery revoke support */
-extern int journal_set_revoke(journal_t *, unsigned long, tid_t);
-extern int journal_test_revoke(journal_t *, unsigned long, tid_t);
-extern void journal_clear_revoke(journal_t *);
-extern void journal_brelse_array(struct buffer_head *b[], int n);
-
-extern void journal_destroy_revoke(journal_t *);
-
-
-#endif /* _LINUX_JBD_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-#ifndef _LINUX_LIST_H
-#define _LINUX_LIST_H
-
-/*
- * Simple doubly linked list implementation.
- *
- * Some of the internal functions ("__xxx") are useful when
- * manipulating whole lists rather than single entries, as
- * sometimes we already know the next/prev entries and we can
- * generate better code by using them directly rather than
- * using the generic single-entry routines.
- */
-
-struct list_head {
- struct list_head *next, *prev;
-};
-
-#define LIST_HEAD_INIT(name) { &(name), &(name) }
-
-#define LIST_HEAD(name) \
- struct list_head name = { &name, &name }
-
-#define INIT_LIST_HEAD(ptr) do { \
- (ptr)->next = (ptr); (ptr)->prev = (ptr); \
-} while (0)
-
-#if (!defined(__GNUC__) && !defined(__WATCOMC__))
-#define __inline__
-#endif
-
-/*
- * Insert a new entry between two known consecutive entries.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-static __inline__ void __list_add(struct list_head * new,
- struct list_head * prev,
- struct list_head * next)
-{
- next->prev = new;
- new->next = next;
- new->prev = prev;
- prev->next = new;
-}
-
-/*
- * Insert a new entry after the specified head..
- */
-static __inline__ void list_add(struct list_head *new, struct list_head *head)
-{
- __list_add(new, head, head->next);
-}
-
-/*
- * Insert a new entry at the tail
- */
-static __inline__ void list_add_tail(struct list_head *new, struct list_head *head)
-{
- __list_add(new, head->prev, head);
-}
-
-/*
- * Delete a list entry by making the prev/next entries
- * point to each other.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-static __inline__ void __list_del(struct list_head * prev,
- struct list_head * next)
-{
- next->prev = prev;
- prev->next = next;
-}
-
-static __inline__ void list_del(struct list_head *entry)
-{
- __list_del(entry->prev, entry->next);
-}
-
-static __inline__ int list_empty(struct list_head *head)
-{
- return head->next == head;
-}
-
-/*
- * Splice in "list" into "head"
- */
-static __inline__ void list_splice(struct list_head *list, struct list_head *head)
-{
- struct list_head *first = list->next;
-
- if (first != list) {
- struct list_head *last = list->prev;
- struct list_head *at = head->next;
-
- first->prev = head;
- head->next = first;
-
- last->next = at;
- at->prev = last;
- }
-}
-
-#define list_entry(ptr, type, member) \
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
-
-#define list_for_each(pos, head) \
- for (pos = (head)->next; pos != (head); pos = pos->next)
-
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * link.c --- create links in a ext2fs directory
- *
- * Copyright (C) 1993, 1994 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct link_struct {
- const char *name;
- int namelen;
- ext2_ino_t inode;
- int flags;
- int done;
- struct ext2_super_block *sb;
-};
-
-static int link_proc(struct ext2_dir_entry *dirent,
- int offset,
- int blocksize,
- char *buf,
- void *priv_data)
-{
- struct link_struct *ls = (struct link_struct *) priv_data;
- struct ext2_dir_entry *next;
- int rec_len, min_rec_len;
- int ret = 0;
-
- rec_len = EXT2_DIR_REC_LEN(ls->namelen);
-
- /*
- * See if the following directory entry (if any) is unused;
- * if so, absorb it into this one.
- */
- next = (struct ext2_dir_entry *) (buf + offset + dirent->rec_len);
- if ((offset + dirent->rec_len < blocksize - 8) &&
- (next->inode == 0) &&
- (offset + dirent->rec_len + next->rec_len <= blocksize)) {
- dirent->rec_len += next->rec_len;
- ret = DIRENT_CHANGED;
- }
-
- /*
- * If the directory entry is used, see if we can split the
- * directory entry to make room for the new name. If so,
- * truncate it and return.
- */
- if (dirent->inode) {
- min_rec_len = EXT2_DIR_REC_LEN(dirent->name_len & 0xFF);
- if (dirent->rec_len < (min_rec_len + rec_len))
- return ret;
- rec_len = dirent->rec_len - min_rec_len;
- dirent->rec_len = min_rec_len;
- next = (struct ext2_dir_entry *) (buf + offset +
- dirent->rec_len);
- next->inode = 0;
- next->name_len = 0;
- next->rec_len = rec_len;
- return DIRENT_CHANGED;
- }
-
- /*
- * If we get this far, then the directory entry is not used.
- * See if we can fit the request entry in. If so, do it.
- */
- if (dirent->rec_len < rec_len)
- return ret;
- dirent->inode = ls->inode;
- dirent->name_len = ls->namelen;
- strncpy(dirent->name, ls->name, ls->namelen);
- if (ls->sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
- dirent->name_len |= (ls->flags & 0x7) << 8;
-
- ls->done++;
- return DIRENT_ABORT|DIRENT_CHANGED;
-}
-
-/*
- * Note: the low 3 bits of the flags field are used as the directory
- * entry filetype.
- */
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
- ext2_ino_t ino, int flags)
-{
- errcode_t retval;
- struct link_struct ls;
- struct ext2_inode inode;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
-
- ls.name = name;
- ls.namelen = name ? strlen(name) : 0;
- ls.inode = ino;
- ls.flags = flags;
- ls.done = 0;
- ls.sb = fs->super;
-
- retval = ext2fs_dir_iterate(fs, dir, DIRENT_FLAG_INCLUDE_EMPTY,
- 0, link_proc, &ls);
- if (retval)
- return retval;
-
- if (!ls.done)
- return EXT2_ET_DIR_NO_SPACE;
-
- if ((retval = ext2fs_read_inode(fs, dir, &inode)) != 0)
- return retval;
-
- if (inode.i_flags & EXT2_INDEX_FL) {
- inode.i_flags &= ~EXT2_INDEX_FL;
- if ((retval = ext2fs_write_inode(fs, dir, &inode)) != 0)
- return retval;
- }
-
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * lookup.c --- ext2fs directory lookup operations
- *
- * Copyright (C) 1993, 1994, 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct lookup_struct {
- const char *name;
- int len;
- ext2_ino_t *inode;
- int found;
-};
-
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-static int lookup_proc(struct ext2_dir_entry *dirent,
- int offset EXT2FS_ATTR((unused)),
- int blocksize EXT2FS_ATTR((unused)),
- char *buf EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct lookup_struct *ls = (struct lookup_struct *) priv_data;
-
- if (ls->len != (dirent->name_len & 0xFF))
- return 0;
- if (strncmp(ls->name, dirent->name, (dirent->name_len & 0xFF)))
- return 0;
- *ls->inode = dirent->inode;
- ls->found++;
- return DIRENT_ABORT;
-}
-
-
-errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
- int namelen, char *buf, ext2_ino_t *inode)
-{
- errcode_t retval;
- struct lookup_struct ls;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- ls.name = name;
- ls.len = namelen;
- ls.inode = inode;
- ls.found = 0;
-
- retval = ext2fs_dir_iterate(fs, dir, 0, buf, lookup_proc, &ls);
- if (retval)
- return retval;
-
- return (ls.found) ? 0 : EXT2_ET_FILE_NOT_FOUND;
-}
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * mkdir.c --- make a directory in the filesystem
- *
- * Copyright (C) 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#ifndef EXT2_FT_DIR
-#define EXT2_FT_DIR 2
-#endif
-
-errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
- const char *name)
-{
- errcode_t retval;
- struct ext2_inode parent_inode, inode;
- ext2_ino_t ino = inum;
- ext2_ino_t scratch_ino;
- blk_t blk;
- char *block = 0;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- /*
- * Allocate an inode, if necessary
- */
- if (!ino) {
- retval = ext2fs_new_inode(fs, parent, LINUX_S_IFDIR | 0755,
- 0, &ino);
- if (retval)
- goto cleanup;
- }
-
- /*
- * Allocate a data block for the directory
- */
- retval = ext2fs_new_block(fs, 0, 0, &blk);
- if (retval)
- goto cleanup;
-
- /*
- * Create a scratch template for the directory
- */
- retval = ext2fs_new_dir_block(fs, ino, parent, &block);
- if (retval)
- goto cleanup;
-
- /*
- * Get the parent's inode, if necessary
- */
- if (parent != ino) {
- retval = ext2fs_read_inode(fs, parent, &parent_inode);
- if (retval)
- goto cleanup;
- } else
- memset(&parent_inode, 0, sizeof(parent_inode));
-
- /*
- * Create the inode structure....
- */
- memset(&inode, 0, sizeof(struct ext2_inode));
- inode.i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
- inode.i_uid = inode.i_gid = 0;
- inode.i_blocks = fs->blocksize / 512;
- inode.i_block[0] = blk;
- inode.i_links_count = 2;
- inode.i_ctime = inode.i_atime = inode.i_mtime = time(NULL);
- inode.i_size = fs->blocksize;
-
- /*
- * Write out the inode and inode data block
- */
- retval = ext2fs_write_dir_block(fs, blk, block);
- if (retval)
- goto cleanup;
- retval = ext2fs_write_new_inode(fs, ino, &inode);
- if (retval)
- goto cleanup;
-
- /*
- * Link the directory into the filesystem hierarchy
- */
- if (name) {
- retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
- &scratch_ino);
- if (!retval) {
- retval = EXT2_ET_DIR_EXISTS;
- name = 0;
- goto cleanup;
- }
- if (retval != EXT2_ET_FILE_NOT_FOUND)
- goto cleanup;
- retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_DIR);
- if (retval)
- goto cleanup;
- }
-
- /*
- * Update parent inode's counts
- */
- if (parent != ino) {
- parent_inode.i_links_count++;
- retval = ext2fs_write_inode(fs, parent, &parent_inode);
- if (retval)
- goto cleanup;
- }
-
- /*
- * Update accounting....
- */
- ext2fs_block_alloc_stats(fs, blk, +1);
- ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
-
-cleanup:
- ext2fs_free_mem(&block);
- return retval;
-
-}
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * mkjournal.c --- make a journal for a filesystem
- *
- * Copyright (C) 2000 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#if HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#if HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-
-#include "ext2_fs.h"
-#include "../e2p/e2p.h"
-#include "../e2fsck.h"
-#include "ext2fs.h"
-#include "kernel-jbd.h"
-
-/*
- * This function automatically sets up the journal superblock and
- * returns it as an allocated block.
- */
-errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
- __u32 size, int flags,
- char **ret_jsb)
-{
- errcode_t retval;
- journal_superblock_t *jsb;
-
- if (size < 1024)
- return EXT2_ET_JOURNAL_TOO_SMALL;
-
- if ((retval = ext2fs_get_mem(fs->blocksize, &jsb)))
- return retval;
-
- memset (jsb, 0, fs->blocksize);
-
- jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
- if (flags & EXT2_MKJOURNAL_V1_SUPER)
- jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V1);
- else
- jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);
- jsb->s_blocksize = htonl(fs->blocksize);
- jsb->s_maxlen = htonl(size);
- jsb->s_nr_users = htonl(1);
- jsb->s_first = htonl(1);
- jsb->s_sequence = htonl(1);
- memcpy(jsb->s_uuid, fs->super->s_uuid, sizeof(fs->super->s_uuid));
- /*
- * If we're creating an external journal device, we need to
- * adjust these fields.
- */
- if (fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- jsb->s_nr_users = 0;
- if (fs->blocksize == 1024)
- jsb->s_first = htonl(3);
- else
- jsb->s_first = htonl(2);
- }
-
- *ret_jsb = (char *) jsb;
- return 0;
-}
-
-/*
- * This function writes a journal using POSIX routines. It is used
- * for creating external journals and creating journals on live
- * filesystems.
- */
-static errcode_t write_journal_file(ext2_filsys fs, char *filename,
- blk_t size, int flags)
-{
- errcode_t retval;
- char *buf = 0;
- int fd, ret_size;
- blk_t i;
-
- if ((retval = ext2fs_create_journal_superblock(fs, size, flags, &buf)))
- return retval;
-
- /* Open the device or journal file */
- if ((fd = open(filename, O_WRONLY)) < 0) {
- retval = errno;
- goto errout;
- }
-
- /* Write the superblock out */
- retval = EXT2_ET_SHORT_WRITE;
- ret_size = write(fd, buf, fs->blocksize);
- if (ret_size < 0) {
- retval = errno;
- goto errout;
- }
- if (ret_size != (int) fs->blocksize)
- goto errout;
- memset(buf, 0, fs->blocksize);
-
- for (i = 1; i < size; i++) {
- ret_size = write(fd, buf, fs->blocksize);
- if (ret_size < 0) {
- retval = errno;
- goto errout;
- }
- if (ret_size != (int) fs->blocksize)
- goto errout;
- }
- close(fd);
-
- retval = 0;
-errout:
- ext2fs_free_mem(&buf);
- return retval;
-}
-
-/*
- * Helper function for creating the journal using direct I/O routines
- */
-struct mkjournal_struct {
- int num_blocks;
- int newblocks;
- char *buf;
- errcode_t err;
-};
-
-static int mkjournal_proc(ext2_filsys fs,
- blk_t *blocknr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct mkjournal_struct *es = (struct mkjournal_struct *) priv_data;
- blk_t new_blk;
- static blk_t last_blk = 0;
- errcode_t retval;
-
- if (*blocknr) {
- last_blk = *blocknr;
- return 0;
- }
- retval = ext2fs_new_block(fs, last_blk, 0, &new_blk);
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- if (blockcnt > 0)
- es->num_blocks--;
-
- es->newblocks++;
- retval = io_channel_write_blk(fs->io, new_blk, 1, es->buf);
-
- if (blockcnt == 0)
- memset(es->buf, 0, fs->blocksize);
-
- if (retval) {
- es->err = retval;
- return BLOCK_ABORT;
- }
- *blocknr = new_blk;
- last_blk = new_blk;
- ext2fs_block_alloc_stats(fs, new_blk, +1);
-
- if (es->num_blocks == 0)
- return (BLOCK_CHANGED | BLOCK_ABORT);
- else
- return BLOCK_CHANGED;
-
-}
-
-/*
- * This function creates a journal using direct I/O routines.
- */
-static errcode_t write_journal_inode(ext2_filsys fs, ext2_ino_t journal_ino,
- blk_t size, int flags)
-{
- char *buf;
- errcode_t retval;
- struct ext2_inode inode;
- struct mkjournal_struct es;
-
- if ((retval = ext2fs_create_journal_superblock(fs, size, flags, &buf)))
- return retval;
-
- if ((retval = ext2fs_read_bitmaps(fs)))
- return retval;
-
- if ((retval = ext2fs_read_inode(fs, journal_ino, &inode)))
- return retval;
-
- if (inode.i_blocks > 0)
- return EEXIST;
-
- es.num_blocks = size;
- es.newblocks = 0;
- es.buf = buf;
- es.err = 0;
-
- retval = ext2fs_block_iterate2(fs, journal_ino, BLOCK_FLAG_APPEND,
- 0, mkjournal_proc, &es);
- if (es.err) {
- retval = es.err;
- goto errout;
- }
-
- if ((retval = ext2fs_read_inode(fs, journal_ino, &inode)))
- goto errout;
-
- inode.i_size += fs->blocksize * size;
- inode.i_blocks += (fs->blocksize / 512) * es.newblocks;
- inode.i_mtime = inode.i_ctime = time(0);
- inode.i_links_count = 1;
- inode.i_mode = LINUX_S_IFREG | 0600;
-
- if ((retval = ext2fs_write_inode(fs, journal_ino, &inode)))
- goto errout;
- retval = 0;
-
- memcpy(fs->super->s_jnl_blocks, inode.i_block, EXT2_N_BLOCKS*4);
- fs->super->s_jnl_blocks[16] = inode.i_size;
- fs->super->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
- ext2fs_mark_super_dirty(fs);
-
-errout:
- ext2fs_free_mem(&buf);
- return retval;
-}
-
-/*
- * This function adds a journal device to a filesystem
- */
-errcode_t ext2fs_add_journal_device(ext2_filsys fs, ext2_filsys journal_dev)
-{
- struct stat st;
- errcode_t retval;
- char buf[1024];
- journal_superblock_t *jsb;
- int start;
- __u32 i, nr_users;
-
- /* Make sure the device exists and is a block device */
- if (stat(journal_dev->device_name, &st) < 0)
- return errno;
-
- if (!S_ISBLK(st.st_mode))
- return EXT2_ET_JOURNAL_NOT_BLOCK; /* Must be a block device */
-
- /* Get the journal superblock */
- start = 1;
- if (journal_dev->blocksize == 1024)
- start++;
- if ((retval = io_channel_read_blk(journal_dev->io, start, -1024, buf)))
- return retval;
-
- jsb = (journal_superblock_t *) buf;
- if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
- (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2)))
- return EXT2_ET_NO_JOURNAL_SB;
-
- if (ntohl(jsb->s_blocksize) != (unsigned long) fs->blocksize)
- return EXT2_ET_UNEXPECTED_BLOCK_SIZE;
-
- /* Check and see if this filesystem has already been added */
- nr_users = ntohl(jsb->s_nr_users);
- for (i=0; i < nr_users; i++) {
- if (memcmp(fs->super->s_uuid,
- &jsb->s_users[i*16], 16) == 0)
- break;
- }
- if (i >= nr_users) {
- memcpy(&jsb->s_users[nr_users*16],
- fs->super->s_uuid, 16);
- jsb->s_nr_users = htonl(nr_users+1);
- }
-
- /* Writeback the journal superblock */
- if ((retval = io_channel_write_blk(journal_dev->io, start, -1024, buf)))
- return retval;
-
- fs->super->s_journal_inum = 0;
- fs->super->s_journal_dev = st.st_rdev;
- memcpy(fs->super->s_journal_uuid, jsb->s_uuid,
- sizeof(fs->super->s_journal_uuid));
- fs->super->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- ext2fs_mark_super_dirty(fs);
- return 0;
-}
-
-/*
- * This function adds a journal inode to a filesystem, using either
- * POSIX routines if the filesystem is mounted, or using direct I/O
- * functions if it is not.
- */
-errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, int flags)
-{
- errcode_t retval;
- ext2_ino_t journal_ino;
- struct stat st;
- char jfile[1024];
- int fd, mount_flags, f;
-
- retval = ext2fs_check_mount_point(fs->device_name, &mount_flags,
- jfile, sizeof(jfile)-10);
- if (retval)
- return retval;
-
- if (mount_flags & EXT2_MF_MOUNTED) {
- strcat(jfile, "/.journal");
-
- /*
- * If .../.journal already exists, make sure any
- * immutable or append-only flags are cleared.
- */
-#if defined(HAVE_CHFLAGS) && defined(UF_NODUMP)
- (void) chflags (jfile, 0);
-#else
-#if HAVE_EXT2_IOCTLS
- fd = open(jfile, O_RDONLY);
- if (fd >= 0) {
- f = 0;
- ioctl(fd, EXT2_IOC_SETFLAGS, &f);
- close(fd);
- }
-#endif
-#endif
-
- /* Create the journal file */
- if ((fd = open(jfile, O_CREAT|O_WRONLY, 0600)) < 0)
- return errno;
-
- if ((retval = write_journal_file(fs, jfile, size, flags)))
- goto errout;
-
- /* Get inode number of the journal file */
- if (fstat(fd, &st) < 0)
- goto errout;
-
-#if defined(HAVE_CHFLAGS) && defined(UF_NODUMP)
- retval = fchflags (fd, UF_NODUMP|UF_IMMUTABLE);
-#else
-#if HAVE_EXT2_IOCTLS
- f = EXT2_NODUMP_FL | EXT2_IMMUTABLE_FL;
- retval = ioctl(fd, EXT2_IOC_SETFLAGS, &f);
-#endif
-#endif
- if (retval)
- goto errout;
-
- close(fd);
- journal_ino = st.st_ino;
- } else {
- journal_ino = EXT2_JOURNAL_INO;
- if ((retval = write_journal_inode(fs, journal_ino,
- size, flags)))
- return retval;
- }
-
- fs->super->s_journal_inum = journal_ino;
- fs->super->s_journal_dev = 0;
- memset(fs->super->s_journal_uuid, 0,
- sizeof(fs->super->s_journal_uuid));
- fs->super->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
-
- ext2fs_mark_super_dirty(fs);
- return 0;
-errout:
- close(fd);
- return retval;
-}
-
-#ifdef DEBUG
-main(int argc, char **argv)
-{
- errcode_t retval;
- char *device_name;
- ext2_filsys fs;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s filesystem\n", argv[0]);
- exit(1);
- }
- device_name = argv[1];
-
- retval = ext2fs_open (device_name, EXT2_FLAG_RW, 0, 0,
- unix_io_manager, &fs);
- if (retval) {
- com_err(argv[0], retval, "while opening %s", device_name);
- exit(1);
- }
-
- retval = ext2fs_add_journal_inode(fs, 1024);
- if (retval) {
- com_err(argv[0], retval, "while adding journal to %s",
- device_name);
- exit(1);
- }
- retval = ext2fs_flush(fs);
- if (retval) {
- printf("Warning, had trouble writing out superblocks.\n");
- }
- ext2fs_close(fs);
- exit(0);
-
-}
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * namei.c --- ext2fs directory lookup operations
- *
- * Copyright (C) 1993, 1994, 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-/* #define NAMEI_DEBUG */
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-static errcode_t open_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t base,
- const char *pathname, size_t pathlen, int follow,
- int link_count, char *buf, ext2_ino_t *res_inode);
-
-static errcode_t follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t dir,
- ext2_ino_t inode, int link_count,
- char *buf, ext2_ino_t *res_inode)
-{
- char *pathname;
- char *buffer = 0;
- errcode_t retval;
- struct ext2_inode ei;
-
-#ifdef NAMEI_DEBUG
- printf("follow_link: root=%lu, dir=%lu, inode=%lu, lc=%d\n",
- root, dir, inode, link_count);
-
-#endif
- retval = ext2fs_read_inode (fs, inode, &ei);
- if (retval) return retval;
- if (!LINUX_S_ISLNK (ei.i_mode)) {
- *res_inode = inode;
- return 0;
- }
- if (link_count++ > 5) {
- return EXT2_ET_SYMLINK_LOOP;
- }
- if (ext2fs_inode_data_blocks(fs,&ei)) {
- retval = ext2fs_get_mem(fs->blocksize, &buffer);
- if (retval)
- return retval;
- retval = io_channel_read_blk(fs->io, ei.i_block[0], 1, buffer);
- if (retval) {
- ext2fs_free_mem(&buffer);
- return retval;
- }
- pathname = buffer;
- } else
- pathname = (char *)&(ei.i_block[0]);
- retval = open_namei(fs, root, dir, pathname, ei.i_size, 1,
- link_count, buf, res_inode);
- ext2fs_free_mem(&buffer);
- return retval;
-}
-
-/*
- * This routine interprets a pathname in the context of the current
- * directory and the root directory, and returns the inode of the
- * containing directory, and a pointer to the filename of the file
- * (pointing into the pathname) and the length of the filename.
- */
-static errcode_t dir_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t dir,
- const char *pathname, int pathlen,
- int link_count, char *buf,
- const char **name, int *namelen,
- ext2_ino_t *res_inode)
-{
- char c;
- const char *thisname;
- int len;
- ext2_ino_t inode;
- errcode_t retval;
-
- if ((c = *pathname) == '/') {
- dir = root;
- pathname++;
- pathlen--;
- }
- while (1) {
- thisname = pathname;
- for (len=0; --pathlen >= 0;len++) {
- c = *(pathname++);
- if (c == '/')
- break;
- }
- if (pathlen < 0)
- break;
- retval = ext2fs_lookup (fs, dir, thisname, len, buf, &inode);
- if (retval) return retval;
- retval = follow_link (fs, root, dir, inode,
- link_count, buf, &dir);
- if (retval) return retval;
- }
- *name = thisname;
- *namelen = len;
- *res_inode = dir;
- return 0;
-}
-
-static errcode_t open_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t base,
- const char *pathname, size_t pathlen, int follow,
- int link_count, char *buf, ext2_ino_t *res_inode)
-{
- const char *basename;
- int namelen;
- ext2_ino_t dir, inode;
- errcode_t retval;
-
-#ifdef NAMEI_DEBUG
- printf("open_namei: root=%lu, dir=%lu, path=%*s, lc=%d\n",
- root, base, pathlen, pathname, link_count);
-#endif
- retval = dir_namei(fs, root, base, pathname, pathlen,
- link_count, buf, &basename, &namelen, &dir);
- if (retval) return retval;
- if (!namelen) { /* special case: '/usr/' etc */
- *res_inode=dir;
- return 0;
- }
- retval = ext2fs_lookup (fs, dir, basename, namelen, buf, &inode);
- if (retval)
- return retval;
- if (follow) {
- retval = follow_link(fs, root, dir, inode, link_count,
- buf, &inode);
- if (retval)
- return retval;
- }
-#ifdef NAMEI_DEBUG
- printf("open_namei: (link_count=%d) returns %lu\n",
- link_count, inode);
-#endif
- *res_inode = inode;
- return 0;
-}
-
-errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- const char *name, ext2_ino_t *inode)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
-
- retval = open_namei(fs, root, cwd, name, strlen(name), 0, 0,
- buf, inode);
-
- ext2fs_free_mem(&buf);
- return retval;
-}
-
-errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- const char *name, ext2_ino_t *inode)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
-
- retval = open_namei(fs, root, cwd, name, strlen(name), 1, 0,
- buf, inode);
-
- ext2fs_free_mem(&buf);
- return retval;
-}
-
-errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- ext2_ino_t inode, ext2_ino_t *res_inode)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
-
- retval = follow_link(fs, root, cwd, inode, 0, buf, res_inode);
-
- ext2fs_free_mem(&buf);
- return retval;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * newdir.c --- create a new directory block
- *
- * Copyright (C) 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-#ifndef EXT2_FT_DIR
-#define EXT2_FT_DIR 2
-#endif
-
-/*
- * Create new directory block
- */
-errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
- ext2_ino_t parent_ino, char **block)
-{
- struct ext2_dir_entry *dir = NULL;
- errcode_t retval;
- char *buf;
- int rec_len;
- int filetype = 0;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, &buf);
- if (retval)
- return retval;
- memset(buf, 0, fs->blocksize);
- dir = (struct ext2_dir_entry *) buf;
- dir->rec_len = fs->blocksize;
-
- if (dir_ino) {
- if (fs->super->s_feature_incompat &
- EXT2_FEATURE_INCOMPAT_FILETYPE)
- filetype = EXT2_FT_DIR << 8;
- /*
- * Set up entry for '.'
- */
- dir->inode = dir_ino;
- dir->name_len = 1 | filetype;
- dir->name[0] = '.';
- rec_len = dir->rec_len - EXT2_DIR_REC_LEN(1);
- dir->rec_len = EXT2_DIR_REC_LEN(1);
-
- /*
- * Set up entry for '..'
- */
- dir = (struct ext2_dir_entry *) (buf + dir->rec_len);
- dir->rec_len = rec_len;
- dir->inode = parent_ino;
- dir->name_len = 2 | filetype;
- dir->name[0] = '.';
- dir->name[1] = '.';
-
- }
- *block = buf;
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * openfs.c --- open an ext2 filesystem
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-
-
-#include "ext2fs.h"
-#include "e2image.h"
-
-blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i)
-{
- int bg;
- int has_super = 0;
- int ret_blk;
-
- if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) ||
- (i < fs->super->s_first_meta_bg))
- return (group_block + i + 1);
-
- bg = (fs->blocksize / sizeof (struct ext2_group_desc)) * i;
- if (ext2fs_bg_has_super(fs, bg))
- has_super = 1;
- ret_blk = (fs->super->s_first_data_block + has_super +
- (bg * fs->super->s_blocks_per_group));
- /*
- * If group_block is not the normal value, we're trying to use
- * the backup group descriptors and superblock --- so use the
- * alternate location of the second block group in the
- * metablock group. Ideally we should be testing each bg
- * descriptor block individually for correctness, but we don't
- * have the infrastructure in place to do that.
- */
- if (group_block != fs->super->s_first_data_block &&
- ((ret_blk + fs->super->s_blocks_per_group) <
- fs->super->s_blocks_count))
- ret_blk += fs->super->s_blocks_per_group;
- return ret_blk;
-}
-
-errcode_t ext2fs_open(const char *name, int flags, int superblock,
- unsigned int block_size, io_manager manager,
- ext2_filsys *ret_fs)
-{
- return ext2fs_open2(name, 0, flags, superblock, block_size,
- manager, ret_fs);
-}
-
-/*
- * Note: if superblock is non-zero, block-size must also be non-zero.
- * Superblock and block_size can be zero to use the default size.
- *
- * Valid flags for ext2fs_open()
- *
- * EXT2_FLAG_RW - Open the filesystem for read/write.
- * EXT2_FLAG_FORCE - Open the filesystem even if some of the
- * features aren't supported.
- * EXT2_FLAG_JOURNAL_DEV_OK - Open an ext3 journal device
- */
-errcode_t ext2fs_open2(const char *name, const char *io_options,
- int flags, int superblock,
- unsigned int block_size, io_manager manager,
- ext2_filsys *ret_fs)
-{
- ext2_filsys fs;
- errcode_t retval;
- unsigned long i;
- int groups_per_block, blocks_per_group;
- blk_t group_block, blk;
- char *dest, *cp;
-#if BB_BIG_ENDIAN
- int j;
- struct ext2_group_desc *gdp;
-#endif
-
- EXT2_CHECK_MAGIC(manager, EXT2_ET_MAGIC_IO_MANAGER);
-
- retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
- if (retval)
- return retval;
-
- memset(fs, 0, sizeof(struct struct_ext2_filsys));
- fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS;
- fs->flags = flags;
- fs->umask = 022;
- retval = ext2fs_get_mem(strlen(name)+1, &fs->device_name);
- if (retval)
- goto cleanup;
- strcpy(fs->device_name, name);
- cp = strchr(fs->device_name, '?');
- if (!io_options && cp) {
- *cp++ = 0;
- io_options = cp;
- }
-
- retval = manager->open(fs->device_name,
- (flags & EXT2_FLAG_RW) ? IO_FLAG_RW : 0,
- &fs->io);
- if (retval)
- goto cleanup;
- if (io_options &&
- (retval = io_channel_set_options(fs->io, io_options)))
- goto cleanup;
- fs->image_io = fs->io;
- fs->io->app_data = fs;
- retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super);
- if (retval)
- goto cleanup;
- if (flags & EXT2_FLAG_IMAGE_FILE) {
- retval = ext2fs_get_mem(sizeof(struct ext2_image_hdr),
- &fs->image_header);
- if (retval)
- goto cleanup;
- retval = io_channel_read_blk(fs->io, 0,
- -(int)sizeof(struct ext2_image_hdr),
- fs->image_header);
- if (retval)
- goto cleanup;
- if (fs->image_header->magic_number != EXT2_ET_MAGIC_E2IMAGE)
- return EXT2_ET_MAGIC_E2IMAGE;
- superblock = 1;
- block_size = fs->image_header->fs_blocksize;
- }
-
- /*
- * If the user specifies a specific block # for the
- * superblock, then he/she must also specify the block size!
- * Otherwise, read the master superblock located at offset
- * SUPERBLOCK_OFFSET from the start of the partition.
- *
- * Note: we only save a backup copy of the superblock if we
- * are reading the superblock from the primary superblock location.
- */
- if (superblock) {
- if (!block_size) {
- retval = EXT2_ET_INVALID_ARGUMENT;
- goto cleanup;
- }
- io_channel_set_blksize(fs->io, block_size);
- group_block = superblock;
- fs->orig_super = 0;
- } else {
- io_channel_set_blksize(fs->io, SUPERBLOCK_OFFSET);
- superblock = 1;
- group_block = 0;
- retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);
- if (retval)
- goto cleanup;
- }
- retval = io_channel_read_blk(fs->io, superblock, -SUPERBLOCK_SIZE,
- fs->super);
- if (retval)
- goto cleanup;
- if (fs->orig_super)
- memcpy(fs->orig_super, fs->super, SUPERBLOCK_SIZE);
-
-#if BB_BIG_ENDIAN
- if ((fs->super->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES)) {
- fs->flags |= EXT2_FLAG_SWAP_BYTES;
-
- ext2fs_swap_super(fs->super);
- }
-#endif
-
- if (fs->super->s_magic != EXT2_SUPER_MAGIC) {
- retval = EXT2_ET_BAD_MAGIC;
- goto cleanup;
- }
- if (fs->super->s_rev_level > EXT2_LIB_CURRENT_REV) {
- retval = EXT2_ET_REV_TOO_HIGH;
- goto cleanup;
- }
-
- /*
- * Check for feature set incompatibility
- */
- if (!(flags & EXT2_FLAG_FORCE)) {
- if (fs->super->s_feature_incompat &
- ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) {
- retval = EXT2_ET_UNSUPP_FEATURE;
- goto cleanup;
- }
- if ((flags & EXT2_FLAG_RW) &&
- (fs->super->s_feature_ro_compat &
- ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP)) {
- retval = EXT2_ET_RO_UNSUPP_FEATURE;
- goto cleanup;
- }
- if (!(flags & EXT2_FLAG_JOURNAL_DEV_OK) &&
- (fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
- retval = EXT2_ET_UNSUPP_FEATURE;
- goto cleanup;
- }
- }
-
- fs->blocksize = EXT2_BLOCK_SIZE(fs->super);
- if (fs->blocksize == 0) {
- retval = EXT2_ET_CORRUPT_SUPERBLOCK;
- goto cleanup;
- }
- fs->fragsize = EXT2_FRAG_SIZE(fs->super);
- fs->inode_blocks_per_group = ((fs->super->s_inodes_per_group *
- EXT2_INODE_SIZE(fs->super) +
- EXT2_BLOCK_SIZE(fs->super) - 1) /
- EXT2_BLOCK_SIZE(fs->super));
- if (block_size) {
- if (block_size != fs->blocksize) {
- retval = EXT2_ET_UNEXPECTED_BLOCK_SIZE;
- goto cleanup;
- }
- }
- /*
- * Set the blocksize to the filesystem's blocksize.
- */
- io_channel_set_blksize(fs->io, fs->blocksize);
-
- /*
- * If this is an external journal device, don't try to read
- * the group descriptors, because they're not there.
- */
- if (fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- fs->group_desc_count = 0;
- *ret_fs = fs;
- return 0;
- }
-
- /*
- * Read group descriptors
- */
- blocks_per_group = EXT2_BLOCKS_PER_GROUP(fs->super);
- if (blocks_per_group == 0 ||
- blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(fs->super) ||
- fs->inode_blocks_per_group > EXT2_MAX_INODES_PER_GROUP(fs->super)) {
- retval = EXT2_ET_CORRUPT_SUPERBLOCK;
- goto cleanup;
- }
- fs->group_desc_count = (fs->super->s_blocks_count -
- fs->super->s_first_data_block +
- blocks_per_group - 1) / blocks_per_group;
- fs->desc_blocks = (fs->group_desc_count +
- EXT2_DESC_PER_BLOCK(fs->super) - 1)
- / EXT2_DESC_PER_BLOCK(fs->super);
- retval = ext2fs_get_mem(fs->desc_blocks * fs->blocksize,
- &fs->group_desc);
- if (retval)
- goto cleanup;
- if (!group_block)
- group_block = fs->super->s_first_data_block;
- dest = (char *) fs->group_desc;
- groups_per_block = fs->blocksize / sizeof(struct ext2_group_desc);
- for (i=0 ; i < fs->desc_blocks; i++) {
- blk = ext2fs_descriptor_block_loc(fs, group_block, i);
- retval = io_channel_read_blk(fs->io, blk, 1, dest);
- if (retval)
- goto cleanup;
-#if BB_BIG_ENDIAN
- if (fs->flags & EXT2_FLAG_SWAP_BYTES) {
- gdp = (struct ext2_group_desc *) dest;
- for (j=0; j < groups_per_block; j++)
- ext2fs_swap_group_desc(gdp++);
- }
-#endif
- dest += fs->blocksize;
- }
-
- *ret_fs = fs;
- return 0;
-cleanup:
- ext2fs_free(fs);
- return retval;
-}
-
-/*
- * Set/get the filesystem data I/O channel.
- *
- * These functions are only valid if EXT2_FLAG_IMAGE_FILE is true.
- */
-errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io)
-{
- if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0)
- return EXT2_ET_NOT_IMAGE_FILE;
- if (old_io) {
- *old_io = (fs->image_io == fs->io) ? 0 : fs->io;
- }
- return 0;
-}
-
-errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io)
-{
- if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0)
- return EXT2_ET_NOT_IMAGE_FILE;
- fs->io = new_io ? new_io : fs->image_io;
- return 0;
-}
-
-errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io)
-{
- if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0)
- return EXT2_ET_NOT_IMAGE_FILE;
- fs->io = fs->image_io = new_io;
- fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_RW |
- EXT2_FLAG_BB_DIRTY | EXT2_FLAG_IB_DIRTY;
- fs->flags &= ~EXT2_FLAG_IMAGE_FILE;
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * read_bb --- read the bad blocks inode
- *
- * Copyright (C) 1994 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct read_bb_record {
- ext2_badblocks_list bb_list;
- errcode_t err;
-};
-
-/*
- * Helper function for ext2fs_read_bb_inode()
- */
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-static int mark_bad_block(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
- blk_t ref_block EXT2FS_ATTR((unused)),
- int ref_offset EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct read_bb_record *rb = (struct read_bb_record *) priv_data;
-
- if (blockcnt < 0)
- return 0;
-
- if ((*block_nr < fs->super->s_first_data_block) ||
- (*block_nr >= fs->super->s_blocks_count))
- return 0; /* Ignore illegal blocks */
-
- rb->err = ext2fs_badblocks_list_add(rb->bb_list, *block_nr);
- if (rb->err)
- return BLOCK_ABORT;
- return 0;
-}
-
-/*
- * Reads the current bad blocks from the bad blocks inode.
- */
-errcode_t ext2fs_read_bb_inode(ext2_filsys fs, ext2_badblocks_list *bb_list)
-{
- errcode_t retval;
- struct read_bb_record rb;
- struct ext2_inode inode;
- blk_t numblocks;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!*bb_list) {
- retval = ext2fs_read_inode(fs, EXT2_BAD_INO, &inode);
- if (retval)
- return retval;
- if (inode.i_blocks < 500)
- numblocks = (inode.i_blocks /
- (fs->blocksize / 512)) + 20;
- else
- numblocks = 500;
- retval = ext2fs_badblocks_list_create(bb_list, numblocks);
- if (retval)
- return retval;
- }
-
- rb.bb_list = *bb_list;
- rb.err = 0;
- retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO, 0, 0,
- mark_bad_block, &rb);
- if (retval)
- return retval;
-
- return rb.err;
-}
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * read_bb_file.c --- read a list of bad blocks from a FILE *
- *
- * Copyright (C) 1994, 1995, 2000 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * Reads a list of bad blocks from a FILE *
- */
-errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
- ext2_badblocks_list *bb_list,
- void *priv_data,
- void (*invalid)(ext2_filsys fs,
- blk_t blk,
- char *badstr,
- void *priv_data))
-{
- errcode_t retval;
- blk_t blockno;
- int count;
- char buf[128];
-
- if (fs)
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!*bb_list) {
- retval = ext2fs_badblocks_list_create(bb_list, 10);
- if (retval)
- return retval;
- }
-
- while (!feof (f)) {
- if (fgets(buf, sizeof(buf), f) == NULL)
- break;
- count = sscanf(buf, "%u", &blockno);
- if (count <= 0)
- continue;
- if (fs &&
- ((blockno < fs->super->s_first_data_block) ||
- (blockno >= fs->super->s_blocks_count))) {
- if (invalid)
- (invalid)(fs, blockno, buf, priv_data);
- continue;
- }
- retval = ext2fs_badblocks_list_add(*bb_list, blockno);
- if (retval)
- return retval;
- }
- return 0;
-}
-
-static void call_compat_invalid(ext2_filsys fs, blk_t blk,
- char *badstr EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- void (*invalid)(ext2_filsys, blk_t);
-
- invalid = (void (*)(ext2_filsys, blk_t)) priv_data;
- if (invalid)
- invalid(fs, blk);
-}
-
-
-/*
- * Reads a list of bad blocks from a FILE *
- */
-errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
- ext2_badblocks_list *bb_list,
- void (*invalid)(ext2_filsys fs, blk_t blk))
-{
- return ext2fs_read_bb_FILE2(fs, f, bb_list, (void *) invalid,
- call_compat_invalid);
-}
-
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * res_gdt.c --- reserve blocks for growing the group descriptor table
- * during online resizing.
- *
- * Copyright (C) 2002 Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * Iterate through the groups which hold BACKUP superblock/GDT copies in an
- * ext3 filesystem. The counters should be initialized to 1, 5, and 7 before
- * calling this for the first time. In a sparse filesystem it will be the
- * sequence of powers of 3, 5, and 7: 1, 3, 5, 7, 9, 25, 27, 49, 81, ...
- * For a non-sparse filesystem it will be every group: 1, 2, 3, 4, ...
- */
-static unsigned int list_backups(ext2_filsys fs, unsigned int *three,
- unsigned int *five, unsigned int *seven)
-{
- unsigned int *min = three;
- int mult = 3;
- unsigned int ret;
-
- if (!(fs->super->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- ret = *min;
- *min += 1;
- return ret;
- }
-
- if (*five < *min) {
- min = five;
- mult = 5;
- }
- if (*seven < *min) {
- min = seven;
- mult = 7;
- }
-
- ret = *min;
- *min *= mult;
-
- return ret;
-}
-
-/*
- * This code assumes that the reserved blocks have already been marked in-use
- * during ext2fs_initialize(), so that they are not allocated for other
- * uses before we can add them to the resize inode (which has to come
- * after the creation of the inode table).
- */
-errcode_t ext2fs_create_resize_inode(ext2_filsys fs)
-{
- errcode_t retval, retval2;
- struct ext2_super_block *sb;
- struct ext2_inode inode;
- __u32 *dindir_buf, *gdt_buf;
- int rsv_add;
- unsigned long long apb, inode_size;
- blk_t dindir_blk, rsv_off, gdt_off, gdt_blk;
- int dindir_dirty = 0, inode_dirty = 0;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- sb = fs->super;
-
- retval = ext2fs_get_mem(2 * fs->blocksize, (void *)&dindir_buf);
- if (retval)
- goto out_free;
- gdt_buf = (__u32 *)((char *)dindir_buf + fs->blocksize);
-
- retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
- if (retval)
- goto out_free;
-
- /* Maximum possible file size (we donly use the dindirect blocks) */
- apb = EXT2_ADDR_PER_BLOCK(sb);
- rsv_add = fs->blocksize / 512;
- if ((dindir_blk = inode.i_block[EXT2_DIND_BLOCK])) {
-#ifdef RES_GDT_DEBUG
- printf("reading GDT dindir %u\n", dindir_blk);
-#endif
- retval = ext2fs_read_ind_block(fs, dindir_blk, dindir_buf);
- if (retval)
- goto out_inode;
- } else {
- blk_t goal = 3 + sb->s_reserved_gdt_blocks +
- fs->desc_blocks + fs->inode_blocks_per_group;
-
- retval = ext2fs_alloc_block(fs, goal, 0, &dindir_blk);
- if (retval)
- goto out_free;
- inode.i_mode = LINUX_S_IFREG | 0600;
- inode.i_links_count = 1;
- inode.i_block[EXT2_DIND_BLOCK] = dindir_blk;
- inode.i_blocks = rsv_add;
- memset(dindir_buf, 0, fs->blocksize);
-#ifdef RES_GDT_DEBUG
- printf("allocated GDT dindir %u\n", dindir_blk);
-#endif
- dindir_dirty = inode_dirty = 1;
- inode_size = apb*apb + apb + EXT2_NDIR_BLOCKS;
- inode_size *= fs->blocksize;
- inode.i_size = inode_size & 0xFFFFFFFF;
- inode.i_size_high = (inode_size >> 32) & 0xFFFFFFFF;
- if(inode.i_size_high) {
- sb->s_feature_ro_compat |=
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
- }
- inode.i_ctime = time(0);
- }
-
- for (rsv_off = 0, gdt_off = fs->desc_blocks,
- gdt_blk = sb->s_first_data_block + 1 + fs->desc_blocks;
- rsv_off < sb->s_reserved_gdt_blocks;
- rsv_off++, gdt_off++, gdt_blk++) {
- unsigned int three = 1, five = 5, seven = 7;
- unsigned int grp, last = 0;
- int gdt_dirty = 0;
-
- gdt_off %= apb;
- if (!dindir_buf[gdt_off]) {
- /* FIXME XXX XXX
- blk_t new_blk;
-
- retval = ext2fs_new_block(fs, gdt_blk, 0, &new_blk);
- if (retval)
- goto out_free;
- if (new_blk != gdt_blk) {
- // XXX free block
- retval = -1; // XXX
- }
- */
- gdt_dirty = dindir_dirty = inode_dirty = 1;
- memset(gdt_buf, 0, fs->blocksize);
- dindir_buf[gdt_off] = gdt_blk;
- inode.i_blocks += rsv_add;
-#ifdef RES_GDT_DEBUG
- printf("added primary GDT block %u at %u[%u]\n",
- gdt_blk, dindir_blk, gdt_off);
-#endif
- } else if (dindir_buf[gdt_off] == gdt_blk) {
-#ifdef RES_GDT_DEBUG
- printf("reading primary GDT block %u\n", gdt_blk);
-#endif
- retval = ext2fs_read_ind_block(fs, gdt_blk, gdt_buf);
- if (retval)
- goto out_dindir;
- } else {
-#ifdef RES_GDT_DEBUG
- printf("bad primary GDT %u != %u at %u[%u]\n",
- dindir_buf[gdt_off], gdt_blk,dindir_blk,gdt_off);
-#endif
- retval = EXT2_ET_RESIZE_INODE_CORRUPT;
- goto out_dindir;
- }
-
- while ((grp = list_backups(fs, &three, &five, &seven)) <
- fs->group_desc_count) {
- blk_t expect = gdt_blk + grp * sb->s_blocks_per_group;
-
- if (!gdt_buf[last]) {
-#ifdef RES_GDT_DEBUG
- printf("added backup GDT %u grp %u@%u[%u]\n",
- expect, grp, gdt_blk, last);
-#endif
- gdt_buf[last] = expect;
- inode.i_blocks += rsv_add;
- gdt_dirty = inode_dirty = 1;
- } else if (gdt_buf[last] != expect) {
-#ifdef RES_GDT_DEBUG
- printf("bad backup GDT %u != %u at %u[%u]\n",
- gdt_buf[last], expect, gdt_blk, last);
-#endif
- retval = EXT2_ET_RESIZE_INODE_CORRUPT;
- goto out_dindir;
- }
- last++;
- }
- if (gdt_dirty) {
-#ifdef RES_GDT_DEBUG
- printf("writing primary GDT block %u\n", gdt_blk);
-#endif
- retval = ext2fs_write_ind_block(fs, gdt_blk, gdt_buf);
- if (retval)
- goto out_dindir;
- }
- }
-
-out_dindir:
- if (dindir_dirty) {
- retval2 = ext2fs_write_ind_block(fs, dindir_blk, dindir_buf);
- if (!retval)
- retval = retval2;
- }
-out_inode:
-#ifdef RES_GDT_DEBUG
- printf("inode.i_blocks = %u, i_size = %u\n", inode.i_blocks,
- inode.i_size);
-#endif
- if (inode_dirty) {
- inode.i_atime = inode.i_mtime = time(0);
- retval2 = ext2fs_write_inode(fs, EXT2_RESIZE_INO, &inode);
- if (!retval)
- retval = retval2;
- }
-out_free:
- ext2fs_free_mem((void *)&dindir_buf);
- return retval;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * rs_bitmap.c --- routine for changing the size of a bitmap
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, __u32 new_real_end,
- ext2fs_generic_bitmap bmap)
-{
- errcode_t retval;
- size_t size, new_size;
- __u32 bitno;
-
- if (!bmap)
- return EXT2_ET_INVALID_ARGUMENT;
-
- EXT2_CHECK_MAGIC(bmap, EXT2_ET_MAGIC_GENERIC_BITMAP);
-
- /*
- * If we're expanding the bitmap, make sure all of the new
- * parts of the bitmap are zero.
- */
- if (new_end > bmap->end) {
- bitno = bmap->real_end;
- if (bitno > new_end)
- bitno = new_end;
- for (; bitno > bmap->end; bitno--)
- ext2fs_clear_bit(bitno - bmap->start, bmap->bitmap);
- }
- if (new_real_end == bmap->real_end) {
- bmap->end = new_end;
- return 0;
- }
-
- size = ((bmap->real_end - bmap->start) / 8) + 1;
- new_size = ((new_real_end - bmap->start) / 8) + 1;
-
- if (size != new_size) {
- retval = ext2fs_resize_mem(size, new_size, &bmap->bitmap);
- if (retval)
- return retval;
- }
- if (new_size > size)
- memset(bmap->bitmap + size, 0, new_size - size);
-
- bmap->end = new_end;
- bmap->real_end = new_real_end;
- return 0;
-}
-
-errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
- ext2fs_inode_bitmap bmap)
-{
- errcode_t retval;
-
- if (!bmap)
- return EXT2_ET_INVALID_ARGUMENT;
-
- EXT2_CHECK_MAGIC(bmap, EXT2_ET_MAGIC_INODE_BITMAP);
-
- bmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
- retval = ext2fs_resize_generic_bitmap(new_end, new_real_end,
- bmap);
- bmap->magic = EXT2_ET_MAGIC_INODE_BITMAP;
- return retval;
-}
-
-errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
- ext2fs_block_bitmap bmap)
-{
- errcode_t retval;
-
- if (!bmap)
- return EXT2_ET_INVALID_ARGUMENT;
-
- EXT2_CHECK_MAGIC(bmap, EXT2_ET_MAGIC_BLOCK_BITMAP);
-
- bmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
- retval = ext2fs_resize_generic_bitmap(new_end, new_real_end,
- bmap);
- bmap->magic = EXT2_ET_MAGIC_BLOCK_BITMAP;
- return retval;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * rw_bitmaps.c --- routines to read and write the inode and block bitmaps.
- *
- * Copyright (C) 1993, 1994, 1994, 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-#include "e2image.h"
-
-#if defined(__powerpc__) && BB_BIG_ENDIAN
-/*
- * On the PowerPC, the big-endian variant of the ext2 filesystem
- * has its bitmaps stored as 32-bit words with bit 0 as the LSB
- * of each word. Thus a bitmap with only bit 0 set would be, as
- * a string of bytes, 00 00 00 01 00 ...
- * To cope with this, we byte-reverse each word of a bitmap if
- * we have a big-endian filesystem, that is, if we are *not*
- * byte-swapping other word-sized numbers.
- */
-#define EXT2_BIG_ENDIAN_BITMAPS
-#endif
-
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
-static void ext2fs_swap_bitmap(ext2_filsys fs, char *bitmap, int nbytes)
-{
- __u32 *p = (__u32 *) bitmap;
- int n;
-
- for (n = nbytes / sizeof(__u32); n > 0; --n, ++p)
- *p = ext2fs_swab32(*p);
-}
-#endif
-
-errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs)
-{
- dgrp_t i;
- size_t nbytes;
- errcode_t retval;
- char * inode_bitmap = fs->inode_map->bitmap;
- char * bitmap_block = NULL;
- blk_t blk;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
- if (!inode_bitmap)
- return 0;
- nbytes = (size_t) ((EXT2_INODES_PER_GROUP(fs->super)+7) / 8);
-
- retval = ext2fs_get_mem(fs->blocksize, &bitmap_block);
- if (retval)
- return retval;
- memset(bitmap_block, 0xff, fs->blocksize);
- for (i = 0; i < fs->group_desc_count; i++) {
- memcpy(bitmap_block, inode_bitmap, nbytes);
- blk = fs->group_desc[i].bg_inode_bitmap;
- if (blk) {
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
- if (!((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE)))
- ext2fs_swap_bitmap(fs, bitmap_block, nbytes);
-#endif
- retval = io_channel_write_blk(fs->io, blk, 1,
- bitmap_block);
- if (retval)
- return EXT2_ET_INODE_BITMAP_WRITE;
- }
- inode_bitmap += nbytes;
- }
- fs->flags &= ~EXT2_FLAG_IB_DIRTY;
- ext2fs_free_mem(&bitmap_block);
- return 0;
-}
-
-errcode_t ext2fs_write_block_bitmap (ext2_filsys fs)
-{
- dgrp_t i;
- unsigned int j;
- int nbytes;
- unsigned int nbits;
- errcode_t retval;
- char * block_bitmap = fs->block_map->bitmap;
- char * bitmap_block = NULL;
- blk_t blk;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
- if (!block_bitmap)
- return 0;
- nbytes = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
- retval = ext2fs_get_mem(fs->blocksize, &bitmap_block);
- if (retval)
- return retval;
- memset(bitmap_block, 0xff, fs->blocksize);
- for (i = 0; i < fs->group_desc_count; i++) {
- memcpy(bitmap_block, block_bitmap, nbytes);
- if (i == fs->group_desc_count - 1) {
- /* Force bitmap padding for the last group */
- nbits = ((fs->super->s_blocks_count
- - fs->super->s_first_data_block)
- % EXT2_BLOCKS_PER_GROUP(fs->super));
- if (nbits)
- for (j = nbits; j < fs->blocksize * 8; j++)
- ext2fs_set_bit(j, bitmap_block);
- }
- blk = fs->group_desc[i].bg_block_bitmap;
- if (blk) {
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
- if (!((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE)))
- ext2fs_swap_bitmap(fs, bitmap_block, nbytes);
-#endif
- retval = io_channel_write_blk(fs->io, blk, 1,
- bitmap_block);
- if (retval)
- return EXT2_ET_BLOCK_BITMAP_WRITE;
- }
- block_bitmap += nbytes;
- }
- fs->flags &= ~EXT2_FLAG_BB_DIRTY;
- ext2fs_free_mem(&bitmap_block);
- return 0;
-}
-
-static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
-{
- dgrp_t i;
- char *block_bitmap = 0, *inode_bitmap = 0;
- char *buf;
- errcode_t retval;
- int block_nbytes = (int) EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
- int inode_nbytes = (int) EXT2_INODES_PER_GROUP(fs->super) / 8;
- blk_t blk;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- fs->write_bitmaps = ext2fs_write_bitmaps;
-
- retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
- if (retval)
- return retval;
- if (do_block) {
- ext2fs_free_block_bitmap(fs->block_map);
- sprintf(buf, "block bitmap for %s", fs->device_name);
- retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map);
- if (retval)
- goto cleanup;
- block_bitmap = fs->block_map->bitmap;
- }
- if (do_inode) {
- ext2fs_free_inode_bitmap(fs->inode_map);
- sprintf(buf, "inode bitmap for %s", fs->device_name);
- retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);
- if (retval)
- goto cleanup;
- inode_bitmap = fs->inode_map->bitmap;
- }
- ext2fs_free_mem(&buf);
-
- if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
- if (inode_bitmap) {
- blk = (fs->image_header->offset_inodemap /
- fs->blocksize);
- retval = io_channel_read_blk(fs->image_io, blk,
- -(inode_nbytes * fs->group_desc_count),
- inode_bitmap);
- if (retval)
- goto cleanup;
- }
- if (block_bitmap) {
- blk = (fs->image_header->offset_blockmap /
- fs->blocksize);
- retval = io_channel_read_blk(fs->image_io, blk,
- -(block_nbytes * fs->group_desc_count),
- block_bitmap);
- if (retval)
- goto cleanup;
- }
- return 0;
- }
-
- for (i = 0; i < fs->group_desc_count; i++) {
- if (block_bitmap) {
- blk = fs->group_desc[i].bg_block_bitmap;
- if (blk) {
- retval = io_channel_read_blk(fs->io, blk,
- -block_nbytes, block_bitmap);
- if (retval) {
- retval = EXT2_ET_BLOCK_BITMAP_READ;
- goto cleanup;
- }
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
- if (!((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)))
- ext2fs_swap_bitmap(fs, block_bitmap, block_nbytes);
-#endif
- } else
- memset(block_bitmap, 0, block_nbytes);
- block_bitmap += block_nbytes;
- }
- if (inode_bitmap) {
- blk = fs->group_desc[i].bg_inode_bitmap;
- if (blk) {
- retval = io_channel_read_blk(fs->io, blk,
- -inode_nbytes, inode_bitmap);
- if (retval) {
- retval = EXT2_ET_INODE_BITMAP_READ;
- goto cleanup;
- }
-#ifdef EXT2_BIG_ENDIAN_BITMAPS
- if (!((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
- (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)))
- ext2fs_swap_bitmap(fs, inode_bitmap, inode_nbytes);
-#endif
- } else
- memset(inode_bitmap, 0, inode_nbytes);
- inode_bitmap += inode_nbytes;
- }
- }
- return 0;
-
-cleanup:
- if (do_block) {
- ext2fs_free_mem(&fs->block_map);
- }
- if (do_inode) {
- ext2fs_free_mem(&fs->inode_map);
- }
- ext2fs_free_mem(&buf);
- return retval;
-}
-
-errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs)
-{
- return read_bitmaps(fs, 1, 0);
-}
-
-errcode_t ext2fs_read_block_bitmap(ext2_filsys fs)
-{
- return read_bitmaps(fs, 0, 1);
-}
-
-errcode_t ext2fs_read_bitmaps(ext2_filsys fs)
-{
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (fs->inode_map && fs->block_map)
- return 0;
-
- return read_bitmaps(fs, !fs->inode_map, !fs->block_map);
-}
-
-errcode_t ext2fs_write_bitmaps(ext2_filsys fs)
-{
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (fs->block_map && ext2fs_test_bb_dirty(fs)) {
- retval = ext2fs_write_block_bitmap(fs);
- if (retval)
- return retval;
- }
- if (fs->inode_map && ext2fs_test_ib_dirty(fs)) {
- retval = ext2fs_write_inode_bitmap(fs);
- if (retval)
- return retval;
- }
- return 0;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * sparse.c --- find the groups in an ext2 filesystem with metadata backups
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- * Copyright (C) 2002 Andreas Dilger.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-static int test_root(int a, int b)
-{
- if (a == 0)
- return 1;
- while (1) {
- if (a == 1)
- return 1;
- if (a % b)
- return 0;
- a = a / b;
- }
-}
-
-int ext2fs_bg_has_super(ext2_filsys fs, int group_block)
-{
- if (!(fs->super->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
- return 1;
-
- if (test_root(group_block, 3) || (test_root(group_block, 5)) ||
- test_root(group_block, 7))
- return 1;
-
- return 0;
-}
-
-/*
- * Iterate through the groups which hold BACKUP superblock/GDT copies in an
- * ext3 filesystem. The counters should be initialized to 1, 5, and 7 before
- * calling this for the first time. In a sparse filesystem it will be the
- * sequence of powers of 3, 5, and 7: 1, 3, 5, 7, 9, 25, 27, 49, 81, ...
- * For a non-sparse filesystem it will be every group: 1, 2, 3, 4, ...
- */
-unsigned int ext2fs_list_backups(ext2_filsys fs, unsigned int *three,
- unsigned int *five, unsigned int *seven)
-{
- unsigned int *min = three;
- int mult = 3;
- unsigned int ret;
-
- if (!(fs->super->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- ret = *min;
- *min += 1;
- return ret;
- }
-
- if (*five < *min) {
- min = five;
- mult = 5;
- }
- if (*seven < *min) {
- min = seven;
- mult = 7;
- }
-
- ret = *min;
- *min *= mult;
-
- return ret;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * swapfs.c --- swap ext2 filesystem data structures
- *
- * Copyright (C) 1995, 1996, 2002 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-#include "ext2_ext_attr.h"
-
-#if BB_BIG_ENDIAN
-void ext2fs_swap_super(struct ext2_super_block * sb)
-{
- int i;
- sb->s_inodes_count = ext2fs_swab32(sb->s_inodes_count);
- sb->s_blocks_count = ext2fs_swab32(sb->s_blocks_count);
- sb->s_r_blocks_count = ext2fs_swab32(sb->s_r_blocks_count);
- sb->s_free_blocks_count = ext2fs_swab32(sb->s_free_blocks_count);
- sb->s_free_inodes_count = ext2fs_swab32(sb->s_free_inodes_count);
- sb->s_first_data_block = ext2fs_swab32(sb->s_first_data_block);
- sb->s_log_block_size = ext2fs_swab32(sb->s_log_block_size);
- sb->s_log_frag_size = ext2fs_swab32(sb->s_log_frag_size);
- sb->s_blocks_per_group = ext2fs_swab32(sb->s_blocks_per_group);
- sb->s_frags_per_group = ext2fs_swab32(sb->s_frags_per_group);
- sb->s_inodes_per_group = ext2fs_swab32(sb->s_inodes_per_group);
- sb->s_mtime = ext2fs_swab32(sb->s_mtime);
- sb->s_wtime = ext2fs_swab32(sb->s_wtime);
- sb->s_mnt_count = ext2fs_swab16(sb->s_mnt_count);
- sb->s_max_mnt_count = ext2fs_swab16(sb->s_max_mnt_count);
- sb->s_magic = ext2fs_swab16(sb->s_magic);
- sb->s_state = ext2fs_swab16(sb->s_state);
- sb->s_errors = ext2fs_swab16(sb->s_errors);
- sb->s_minor_rev_level = ext2fs_swab16(sb->s_minor_rev_level);
- sb->s_lastcheck = ext2fs_swab32(sb->s_lastcheck);
- sb->s_checkinterval = ext2fs_swab32(sb->s_checkinterval);
- sb->s_creator_os = ext2fs_swab32(sb->s_creator_os);
- sb->s_rev_level = ext2fs_swab32(sb->s_rev_level);
- sb->s_def_resuid = ext2fs_swab16(sb->s_def_resuid);
- sb->s_def_resgid = ext2fs_swab16(sb->s_def_resgid);
- sb->s_first_ino = ext2fs_swab32(sb->s_first_ino);
- sb->s_inode_size = ext2fs_swab16(sb->s_inode_size);
- sb->s_block_group_nr = ext2fs_swab16(sb->s_block_group_nr);
- sb->s_feature_compat = ext2fs_swab32(sb->s_feature_compat);
- sb->s_feature_incompat = ext2fs_swab32(sb->s_feature_incompat);
- sb->s_feature_ro_compat = ext2fs_swab32(sb->s_feature_ro_compat);
- sb->s_algorithm_usage_bitmap = ext2fs_swab32(sb->s_algorithm_usage_bitmap);
- sb->s_reserved_gdt_blocks = ext2fs_swab16(sb->s_reserved_gdt_blocks);
- sb->s_journal_inum = ext2fs_swab32(sb->s_journal_inum);
- sb->s_journal_dev = ext2fs_swab32(sb->s_journal_dev);
- sb->s_last_orphan = ext2fs_swab32(sb->s_last_orphan);
- sb->s_default_mount_opts = ext2fs_swab32(sb->s_default_mount_opts);
- sb->s_first_meta_bg = ext2fs_swab32(sb->s_first_meta_bg);
- sb->s_mkfs_time = ext2fs_swab32(sb->s_mkfs_time);
- for (i=0; i < 4; i++)
- sb->s_hash_seed[i] = ext2fs_swab32(sb->s_hash_seed[i]);
- for (i=0; i < 17; i++)
- sb->s_jnl_blocks[i] = ext2fs_swab32(sb->s_jnl_blocks[i]);
-
-}
-
-void ext2fs_swap_group_desc(struct ext2_group_desc *gdp)
-{
- gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap);
- gdp->bg_inode_bitmap = ext2fs_swab32(gdp->bg_inode_bitmap);
- gdp->bg_inode_table = ext2fs_swab32(gdp->bg_inode_table);
- gdp->bg_free_blocks_count = ext2fs_swab16(gdp->bg_free_blocks_count);
- gdp->bg_free_inodes_count = ext2fs_swab16(gdp->bg_free_inodes_count);
- gdp->bg_used_dirs_count = ext2fs_swab16(gdp->bg_used_dirs_count);
-}
-
-void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, int has_header)
-{
- struct ext2_ext_attr_header *from_header =
- (struct ext2_ext_attr_header *)from;
- struct ext2_ext_attr_header *to_header =
- (struct ext2_ext_attr_header *)to;
- struct ext2_ext_attr_entry *from_entry, *to_entry;
- char *from_end = (char *)from_header + bufsize;
- int n;
-
- if (to_header != from_header)
- memcpy(to_header, from_header, bufsize);
-
- from_entry = (struct ext2_ext_attr_entry *)from_header;
- to_entry = (struct ext2_ext_attr_entry *)to_header;
-
- if (has_header) {
- to_header->h_magic = ext2fs_swab32(from_header->h_magic);
- to_header->h_blocks = ext2fs_swab32(from_header->h_blocks);
- to_header->h_refcount = ext2fs_swab32(from_header->h_refcount);
- for (n=0; n<4; n++)
- to_header->h_reserved[n] =
- ext2fs_swab32(from_header->h_reserved[n]);
- from_entry = (struct ext2_ext_attr_entry *)(from_header+1);
- to_entry = (struct ext2_ext_attr_entry *)(to_header+1);
- }
-
- while ((char *)from_entry < from_end && *(__u32 *)from_entry) {
- to_entry->e_value_offs =
- ext2fs_swab16(from_entry->e_value_offs);
- to_entry->e_value_block =
- ext2fs_swab32(from_entry->e_value_block);
- to_entry->e_value_size =
- ext2fs_swab32(from_entry->e_value_size);
- from_entry = EXT2_EXT_ATTR_NEXT(from_entry);
- to_entry = EXT2_EXT_ATTR_NEXT(to_entry);
- }
-}
-
-void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
- struct ext2_inode_large *f, int hostorder,
- int bufsize)
-{
- unsigned i;
- int islnk = 0;
- __u32 *eaf, *eat;
-
- if (hostorder && LINUX_S_ISLNK(f->i_mode))
- islnk = 1;
- t->i_mode = ext2fs_swab16(f->i_mode);
- if (!hostorder && LINUX_S_ISLNK(t->i_mode))
- islnk = 1;
- t->i_uid = ext2fs_swab16(f->i_uid);
- t->i_size = ext2fs_swab32(f->i_size);
- t->i_atime = ext2fs_swab32(f->i_atime);
- t->i_ctime = ext2fs_swab32(f->i_ctime);
- t->i_mtime = ext2fs_swab32(f->i_mtime);
- t->i_dtime = ext2fs_swab32(f->i_dtime);
- t->i_gid = ext2fs_swab16(f->i_gid);
- t->i_links_count = ext2fs_swab16(f->i_links_count);
- t->i_blocks = ext2fs_swab32(f->i_blocks);
- t->i_flags = ext2fs_swab32(f->i_flags);
- t->i_file_acl = ext2fs_swab32(f->i_file_acl);
- t->i_dir_acl = ext2fs_swab32(f->i_dir_acl);
- if (!islnk || ext2fs_inode_data_blocks(fs, (struct ext2_inode *)t)) {
- for (i = 0; i < EXT2_N_BLOCKS; i++)
- t->i_block[i] = ext2fs_swab32(f->i_block[i]);
- } else if (t != f) {
- for (i = 0; i < EXT2_N_BLOCKS; i++)
- t->i_block[i] = f->i_block[i];
- }
- t->i_generation = ext2fs_swab32(f->i_generation);
- t->i_faddr = ext2fs_swab32(f->i_faddr);
-
- switch (fs->super->s_creator_os) {
- case EXT2_OS_LINUX:
- t->osd1.linux1.l_i_reserved1 =
- ext2fs_swab32(f->osd1.linux1.l_i_reserved1);
- t->osd2.linux2.l_i_frag = f->osd2.linux2.l_i_frag;
- t->osd2.linux2.l_i_fsize = f->osd2.linux2.l_i_fsize;
- t->osd2.linux2.i_pad1 = ext2fs_swab16(f->osd2.linux2.i_pad1);
- t->osd2.linux2.l_i_uid_high =
- ext2fs_swab16 (f->osd2.linux2.l_i_uid_high);
- t->osd2.linux2.l_i_gid_high =
- ext2fs_swab16 (f->osd2.linux2.l_i_gid_high);
- t->osd2.linux2.l_i_reserved2 =
- ext2fs_swab32(f->osd2.linux2.l_i_reserved2);
- break;
- case EXT2_OS_HURD:
- t->osd1.hurd1.h_i_translator =
- ext2fs_swab32 (f->osd1.hurd1.h_i_translator);
- t->osd2.hurd2.h_i_frag = f->osd2.hurd2.h_i_frag;
- t->osd2.hurd2.h_i_fsize = f->osd2.hurd2.h_i_fsize;
- t->osd2.hurd2.h_i_mode_high =
- ext2fs_swab16 (f->osd2.hurd2.h_i_mode_high);
- t->osd2.hurd2.h_i_uid_high =
- ext2fs_swab16 (f->osd2.hurd2.h_i_uid_high);
- t->osd2.hurd2.h_i_gid_high =
- ext2fs_swab16 (f->osd2.hurd2.h_i_gid_high);
- t->osd2.hurd2.h_i_author =
- ext2fs_swab32 (f->osd2.hurd2.h_i_author);
- break;
- case EXT2_OS_MASIX:
- t->osd1.masix1.m_i_reserved1 =
- ext2fs_swab32(f->osd1.masix1.m_i_reserved1);
- t->osd2.masix2.m_i_frag = f->osd2.masix2.m_i_frag;
- t->osd2.masix2.m_i_fsize = f->osd2.masix2.m_i_fsize;
- t->osd2.masix2.m_pad1 = ext2fs_swab16(f->osd2.masix2.m_pad1);
- t->osd2.masix2.m_i_reserved2[0] =
- ext2fs_swab32(f->osd2.masix2.m_i_reserved2[0]);
- t->osd2.masix2.m_i_reserved2[1] =
- ext2fs_swab32(f->osd2.masix2.m_i_reserved2[1]);
- break;
- }
-
- if (bufsize < (int) (sizeof(struct ext2_inode) + sizeof(__u16)))
- return; /* no i_extra_isize field */
-
- t->i_extra_isize = ext2fs_swab16(f->i_extra_isize);
- if (t->i_extra_isize > EXT2_INODE_SIZE(fs->super) -
- sizeof(struct ext2_inode)) {
- /* this is error case: i_extra_size is too large */
- return;
- }
-
- i = sizeof(struct ext2_inode) + t->i_extra_isize + sizeof(__u32);
- if (bufsize < (int) i)
- return; /* no space for EA magic */
-
- eaf = (__u32 *) (((char *) f) + sizeof(struct ext2_inode) +
- f->i_extra_isize);
-
- if (ext2fs_swab32(*eaf) != EXT2_EXT_ATTR_MAGIC)
- return; /* it seems no magic here */
-
- eat = (__u32 *) (((char *) t) + sizeof(struct ext2_inode) +
- f->i_extra_isize);
- *eat = ext2fs_swab32(*eaf);
-
- /* convert EA(s) */
- ext2fs_swap_ext_attr((char *) (eat + 1), (char *) (eaf + 1),
- bufsize - sizeof(struct ext2_inode) -
- t->i_extra_isize - sizeof(__u32), 0);
-
-}
-
-void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t,
- struct ext2_inode *f, int hostorder)
-{
- ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t,
- (struct ext2_inode_large *) f, hostorder,
- sizeof(struct ext2_inode));
-}
-
-#endif
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * test_io.c --- This is the Test I/O interface.
- *
- * Copyright (C) 1996 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * For checking structure magic numbers...
- */
-
-#define EXT2_CHECK_MAGIC(struct, code) \
- if ((struct)->magic != (code)) return (code)
-
-struct test_private_data {
- int magic;
- io_channel real;
- int flags;
- FILE *outfile;
- unsigned long block;
- int read_abort_count, write_abort_count;
- void (*read_blk)(unsigned long block, int count, errcode_t err);
- void (*write_blk)(unsigned long block, int count, errcode_t err);
- void (*set_blksize)(int blksize, errcode_t err);
- void (*write_byte)(unsigned long block, int count, errcode_t err);
-};
-
-static errcode_t test_open(const char *name, int flags, io_channel *channel);
-static errcode_t test_close(io_channel channel);
-static errcode_t test_set_blksize(io_channel channel, int blksize);
-static errcode_t test_read_blk(io_channel channel, unsigned long block,
- int count, void *data);
-static errcode_t test_write_blk(io_channel channel, unsigned long block,
- int count, const void *data);
-static errcode_t test_flush(io_channel channel);
-static errcode_t test_write_byte(io_channel channel, unsigned long offset,
- int count, const void *buf);
-static errcode_t test_set_option(io_channel channel, const char *option,
- const char *arg);
-
-static struct struct_io_manager struct_test_manager = {
- EXT2_ET_MAGIC_IO_MANAGER,
- "Test I/O Manager",
- test_open,
- test_close,
- test_set_blksize,
- test_read_blk,
- test_write_blk,
- test_flush,
- test_write_byte,
- test_set_option
-};
-
-io_manager test_io_manager = &struct_test_manager;
-
-/*
- * These global variable can be set by the test program as
- * necessary *before* calling test_open
- */
-io_manager test_io_backing_manager = 0;
-void (*test_io_cb_read_blk)
- (unsigned long block, int count, errcode_t err) = 0;
-void (*test_io_cb_write_blk)
- (unsigned long block, int count, errcode_t err) = 0;
-void (*test_io_cb_set_blksize)
- (int blksize, errcode_t err) = 0;
-void (*test_io_cb_write_byte)
- (unsigned long block, int count, errcode_t err) = 0;
-
-/*
- * Test flags
- */
-#define TEST_FLAG_READ 0x01
-#define TEST_FLAG_WRITE 0x02
-#define TEST_FLAG_SET_BLKSIZE 0x04
-#define TEST_FLAG_FLUSH 0x08
-#define TEST_FLAG_DUMP 0x10
-#define TEST_FLAG_SET_OPTION 0x20
-
-static void test_dump_block(io_channel channel,
- struct test_private_data *data,
- unsigned long block, const void *buf)
-{
- const unsigned char *cp;
- FILE *f = data->outfile;
- int i;
- unsigned long cksum = 0;
-
- for (i=0, cp = buf; i < channel->block_size; i++, cp++) {
- cksum += *cp;
- }
- fprintf(f, "Contents of block %lu, checksum %08lu:\n", block, cksum);
- for (i=0, cp = buf; i < channel->block_size; i++, cp++) {
- if ((i % 16) == 0)
- fprintf(f, "%04x: ", i);
- fprintf(f, "%02x%c", *cp, ((i % 16) == 15) ? '\n' : ' ');
- }
-}
-
-static void test_abort(io_channel channel, unsigned long block)
-{
- struct test_private_data *data;
- FILE *f;
-
- data = (struct test_private_data *) channel->private_data;
- f = data->outfile;
- test_flush(channel);
-
- fprintf(f, "Aborting due to I/O to block %lu\n", block);
- fflush(f);
- abort();
-}
-
-static errcode_t test_open(const char *name, int flags, io_channel *channel)
-{
- io_channel io = NULL;
- struct test_private_data *data = NULL;
- errcode_t retval;
- char *value;
-
- if (name == 0)
- return EXT2_ET_BAD_DEVICE_NAME;
- retval = ext2fs_get_mem(sizeof(struct struct_io_channel), &io);
- if (retval)
- return retval;
- memset(io, 0, sizeof(struct struct_io_channel));
- io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
- retval = ext2fs_get_mem(sizeof(struct test_private_data), &data);
- if (retval) {
- retval = EXT2_ET_NO_MEMORY;
- goto cleanup;
- }
- io->manager = test_io_manager;
- retval = ext2fs_get_mem(strlen(name)+1, &io->name);
- if (retval)
- goto cleanup;
-
- strcpy(io->name, name);
- io->private_data = data;
- io->block_size = 1024;
- io->read_error = 0;
- io->write_error = 0;
- io->refcount = 1;
-
- memset(data, 0, sizeof(struct test_private_data));
- data->magic = EXT2_ET_MAGIC_TEST_IO_CHANNEL;
- if (test_io_backing_manager) {
- retval = test_io_backing_manager->open(name, flags,
- &data->real);
- if (retval)
- goto cleanup;
- } else
- data->real = 0;
- data->read_blk = test_io_cb_read_blk;
- data->write_blk = test_io_cb_write_blk;
- data->set_blksize = test_io_cb_set_blksize;
- data->write_byte = test_io_cb_write_byte;
-
- data->outfile = NULL;
- if ((value = getenv("TEST_IO_LOGFILE")) != NULL)
- data->outfile = fopen(value, "w");
- if (!data->outfile)
- data->outfile = stderr;
-
- data->flags = 0;
- if ((value = getenv("TEST_IO_FLAGS")) != NULL)
- data->flags = strtoul(value, NULL, 0);
-
- data->block = 0;
- if ((value = getenv("TEST_IO_BLOCK")) != NULL)
- data->block = strtoul(value, NULL, 0);
-
- data->read_abort_count = 0;
- if ((value = getenv("TEST_IO_READ_ABORT")) != NULL)
- data->read_abort_count = strtoul(value, NULL, 0);
-
- data->write_abort_count = 0;
- if ((value = getenv("TEST_IO_WRITE_ABORT")) != NULL)
- data->write_abort_count = strtoul(value, NULL, 0);
-
- *channel = io;
- return 0;
-
-cleanup:
- ext2fs_free_mem(&io);
- ext2fs_free_mem(&data);
- return retval;
-}
-
-static errcode_t test_close(io_channel channel)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
- if (--channel->refcount > 0)
- return 0;
-
- if (data->real)
- retval = io_channel_close(data->real);
-
- if (data->outfile && data->outfile != stderr)
- fclose(data->outfile);
-
- ext2fs_free_mem(&channel->private_data);
- ext2fs_free_mem(&channel->name);
- ext2fs_free_mem(&channel);
- return retval;
-}
-
-static errcode_t test_set_blksize(io_channel channel, int blksize)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
- if (data->real)
- retval = io_channel_set_blksize(data->real, blksize);
- if (data->set_blksize)
- data->set_blksize(blksize, retval);
- if (data->flags & TEST_FLAG_SET_BLKSIZE)
- fprintf(data->outfile,
- "Test_io: set_blksize(%d) returned %s\n",
- blksize, retval ? error_message(retval) : "OK");
- channel->block_size = blksize;
- return retval;
-}
-
-
-static errcode_t test_read_blk(io_channel channel, unsigned long block,
- int count, void *buf)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
- if (data->real)
- retval = io_channel_read_blk(data->real, block, count, buf);
- if (data->read_blk)
- data->read_blk(block, count, retval);
- if (data->flags & TEST_FLAG_READ)
- fprintf(data->outfile,
- "Test_io: read_blk(%lu, %d) returned %s\n",
- block, count, retval ? error_message(retval) : "OK");
- if (data->block && data->block == block) {
- if (data->flags & TEST_FLAG_DUMP)
- test_dump_block(channel, data, block, buf);
- if (--data->read_abort_count == 0)
- test_abort(channel, block);
- }
- return retval;
-}
-
-static errcode_t test_write_blk(io_channel channel, unsigned long block,
- int count, const void *buf)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
- if (data->real)
- retval = io_channel_write_blk(data->real, block, count, buf);
- if (data->write_blk)
- data->write_blk(block, count, retval);
- if (data->flags & TEST_FLAG_WRITE)
- fprintf(data->outfile,
- "Test_io: write_blk(%lu, %d) returned %s\n",
- block, count, retval ? error_message(retval) : "OK");
- if (data->block && data->block == block) {
- if (data->flags & TEST_FLAG_DUMP)
- test_dump_block(channel, data, block, buf);
- if (--data->write_abort_count == 0)
- test_abort(channel, block);
- }
- return retval;
-}
-
-static errcode_t test_write_byte(io_channel channel, unsigned long offset,
- int count, const void *buf)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
- if (data->real && data->real->manager->write_byte)
- retval = io_channel_write_byte(data->real, offset, count, buf);
- if (data->write_byte)
- data->write_byte(offset, count, retval);
- if (data->flags & TEST_FLAG_WRITE)
- fprintf(data->outfile,
- "Test_io: write_byte(%lu, %d) returned %s\n",
- offset, count, retval ? error_message(retval) : "OK");
- return retval;
-}
-
-/*
- * Flush data buffers to disk.
- */
-static errcode_t test_flush(io_channel channel)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
- if (data->real)
- retval = io_channel_flush(data->real);
-
- if (data->flags & TEST_FLAG_FLUSH)
- fprintf(data->outfile, "Test_io: flush() returned %s\n",
- retval ? error_message(retval) : "OK");
-
- return retval;
-}
-
-static errcode_t test_set_option(io_channel channel, const char *option,
- const char *arg)
-{
- struct test_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct test_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
-
-
- if (data->flags & TEST_FLAG_SET_OPTION)
- fprintf(data->outfile, "Test_io: set_option(%s, %s) ",
- option, arg);
- if (data->real && data->real->manager->set_option) {
- retval = (data->real->manager->set_option)(data->real,
- option, arg);
- if (data->flags & TEST_FLAG_SET_OPTION)
- fprintf(data->outfile, "returned %s\n",
- retval ? error_message(retval) : "OK");
- } else {
- if (data->flags & TEST_FLAG_SET_OPTION)
- fprintf(data->outfile, "not implemented\n");
- }
- return retval;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * unix_io.c --- This is the Unix (well, really POSIX) implementation
- * of the I/O manager.
- *
- * Implements a one-block write-through cache.
- *
- * Includes support for Windows NT support under Cygwin.
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- * 2002 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <fcntl.h>
-#include <time.h>
-#ifdef __linux__
-#include <sys/utsname.h>
-#endif
-#if HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#if HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#include <sys/resource.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * For checking structure magic numbers...
- */
-
-#define EXT2_CHECK_MAGIC(struct, code) \
- if ((struct)->magic != (code)) return (code)
-
-struct unix_cache {
- char *buf;
- unsigned long block;
- int access_time;
- unsigned dirty:1;
- unsigned in_use:1;
-};
-
-#define CACHE_SIZE 8
-#define WRITE_DIRECT_SIZE 4 /* Must be smaller than CACHE_SIZE */
-#define READ_DIRECT_SIZE 4 /* Should be smaller than CACHE_SIZE */
-
-struct unix_private_data {
- int magic;
- int dev;
- int flags;
- int access_time;
- ext2_loff_t offset;
- struct unix_cache cache[CACHE_SIZE];
-};
-
-static errcode_t unix_open(const char *name, int flags, io_channel *channel);
-static errcode_t unix_close(io_channel channel);
-static errcode_t unix_set_blksize(io_channel channel, int blksize);
-static errcode_t unix_read_blk(io_channel channel, unsigned long block,
- int count, void *data);
-static errcode_t unix_write_blk(io_channel channel, unsigned long block,
- int count, const void *data);
-static errcode_t unix_flush(io_channel channel);
-static errcode_t unix_write_byte(io_channel channel, unsigned long offset,
- int size, const void *data);
-static errcode_t unix_set_option(io_channel channel, const char *option,
- const char *arg);
-
-static void reuse_cache(io_channel channel, struct unix_private_data *data,
- struct unix_cache *cache, unsigned long block);
-
-/* __FreeBSD_kernel__ is defined by GNU/kFreeBSD - the FreeBSD kernel
- * does not know buffered block devices - everything is raw. */
-#if defined(__CYGWIN__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-#define NEED_BOUNCE_BUFFER
-#else
-#undef NEED_BOUNCE_BUFFER
-#endif
-
-static struct struct_io_manager struct_unix_manager = {
- EXT2_ET_MAGIC_IO_MANAGER,
- "Unix I/O Manager",
- unix_open,
- unix_close,
- unix_set_blksize,
- unix_read_blk,
- unix_write_blk,
- unix_flush,
-#ifdef NEED_BOUNCE_BUFFER
- 0,
-#else
- unix_write_byte,
-#endif
- unix_set_option
-};
-
-io_manager unix_io_manager = &struct_unix_manager;
-
-/*
- * Here are the raw I/O functions
- */
-#ifndef NEED_BOUNCE_BUFFER
-static errcode_t raw_read_blk(io_channel channel,
- struct unix_private_data *data,
- unsigned long block,
- int count, void *buf)
-{
- errcode_t retval;
- ssize_t size;
- ext2_loff_t location;
- int actual = 0;
-
- size = (count < 0) ? -count : count * channel->block_size;
- location = ((ext2_loff_t) block * channel->block_size) + data->offset;
- if (ext2fs_llseek(data->dev, location, SEEK_SET) != location) {
- retval = errno ? errno : EXT2_ET_LLSEEK_FAILED;
- goto error_out;
- }
- actual = read(data->dev, buf, size);
- if (actual != size) {
- if (actual < 0)
- actual = 0;
- retval = EXT2_ET_SHORT_READ;
- goto error_out;
- }
- return 0;
-
-error_out:
- memset((char *) buf+actual, 0, size-actual);
- if (channel->read_error)
- retval = (channel->read_error)(channel, block, count, buf,
- size, actual, retval);
- return retval;
-}
-#else /* NEED_BOUNCE_BUFFER */
-/*
- * Windows and FreeBSD block devices only allow sector alignment IO in offset and size
- */
-static errcode_t raw_read_blk(io_channel channel,
- struct unix_private_data *data,
- unsigned long block,
- int count, void *buf)
-{
- errcode_t retval;
- size_t size, alignsize, fragment;
- ext2_loff_t location;
- int total = 0, actual;
-#define BLOCKALIGN 512
- char sector[BLOCKALIGN];
-
- size = (count < 0) ? -count : count * channel->block_size;
- location = ((ext2_loff_t) block * channel->block_size) + data->offset;
-#ifdef DEBUG
- printf("count=%d, size=%d, block=%d, blk_size=%d, location=%lx\n",
- count, size, block, channel->block_size, location);
-#endif
- if (ext2fs_llseek(data->dev, location, SEEK_SET) != location) {
- retval = errno ? errno : EXT2_ET_LLSEEK_FAILED;
- goto error_out;
- }
- fragment = size % BLOCKALIGN;
- alignsize = size - fragment;
- if (alignsize) {
- actual = read(data->dev, buf, alignsize);
- if (actual != alignsize)
- goto short_read;
- }
- if (fragment) {
- actual = read(data->dev, sector, BLOCKALIGN);
- if (actual != BLOCKALIGN)
- goto short_read;
- memcpy(buf+alignsize, sector, fragment);
- }
- return 0;
-
-short_read:
- if (actual>0)
- total += actual;
- retval = EXT2_ET_SHORT_READ;
-
-error_out:
- memset((char *) buf+total, 0, size-actual);
- if (channel->read_error)
- retval = (channel->read_error)(channel, block, count, buf,
- size, actual, retval);
- return retval;
-}
-#endif
-
-static errcode_t raw_write_blk(io_channel channel,
- struct unix_private_data *data,
- unsigned long block,
- int count, const void *buf)
-{
- ssize_t size;
- ext2_loff_t location;
- int actual = 0;
- errcode_t retval;
-
- if (count == 1)
- size = channel->block_size;
- else {
- if (count < 0)
- size = -count;
- else
- size = count * channel->block_size;
- }
-
- location = ((ext2_loff_t) block * channel->block_size) + data->offset;
- if (ext2fs_llseek(data->dev, location, SEEK_SET) != location) {
- retval = errno ? errno : EXT2_ET_LLSEEK_FAILED;
- goto error_out;
- }
-
- actual = write(data->dev, buf, size);
- if (actual != size) {
- retval = EXT2_ET_SHORT_WRITE;
- goto error_out;
- }
- return 0;
-
-error_out:
- if (channel->write_error)
- retval = (channel->write_error)(channel, block, count, buf,
- size, actual, retval);
- return retval;
-}
-
-
-/*
- * Here we implement the cache functions
- */
-
-/* Allocate the cache buffers */
-static errcode_t alloc_cache(io_channel channel,
- struct unix_private_data *data)
-{
- errcode_t retval;
- struct unix_cache *cache;
- int i;
-
- data->access_time = 0;
- for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
- cache->block = 0;
- cache->access_time = 0;
- cache->dirty = 0;
- cache->in_use = 0;
- if ((retval = ext2fs_get_mem(channel->block_size,
- &cache->buf)))
- return retval;
- }
- return 0;
-}
-
-/* Free the cache buffers */
-static void free_cache(struct unix_private_data *data)
-{
- struct unix_cache *cache;
- int i;
-
- data->access_time = 0;
- for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
- cache->block = 0;
- cache->access_time = 0;
- cache->dirty = 0;
- cache->in_use = 0;
- ext2fs_free_mem(&cache->buf);
- cache->buf = 0;
- }
-}
-
-#ifndef NO_IO_CACHE
-/*
- * Try to find a block in the cache. If the block is not found, and
- * eldest is a non-zero pointer, then fill in eldest with the cache
- * entry to that should be reused.
- */
-static struct unix_cache *find_cached_block(struct unix_private_data *data,
- unsigned long block,
- struct unix_cache **eldest)
-{
- struct unix_cache *cache, *unused_cache, *oldest_cache;
- int i;
-
- unused_cache = oldest_cache = 0;
- for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
- if (!cache->in_use) {
- if (!unused_cache)
- unused_cache = cache;
- continue;
- }
- if (cache->block == block) {
- cache->access_time = ++data->access_time;
- return cache;
- }
- if (!oldest_cache ||
- (cache->access_time < oldest_cache->access_time))
- oldest_cache = cache;
- }
- if (eldest)
- *eldest = (unused_cache) ? unused_cache : oldest_cache;
- return 0;
-}
-
-/*
- * Reuse a particular cache entry for another block.
- */
-static void reuse_cache(io_channel channel, struct unix_private_data *data,
- struct unix_cache *cache, unsigned long block)
-{
- if (cache->dirty && cache->in_use)
- raw_write_blk(channel, data, cache->block, 1, cache->buf);
-
- cache->in_use = 1;
- cache->dirty = 0;
- cache->block = block;
- cache->access_time = ++data->access_time;
-}
-
-/*
- * Flush all of the blocks in the cache
- */
-static errcode_t flush_cached_blocks(io_channel channel,
- struct unix_private_data *data,
- int invalidate)
-
-{
- struct unix_cache *cache;
- errcode_t retval, retval2;
- int i;
-
- retval2 = 0;
- for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
- if (!cache->in_use)
- continue;
-
- if (invalidate)
- cache->in_use = 0;
-
- if (!cache->dirty)
- continue;
-
- retval = raw_write_blk(channel, data,
- cache->block, 1, cache->buf);
- if (retval)
- retval2 = retval;
- else
- cache->dirty = 0;
- }
- return retval2;
-}
-#endif /* NO_IO_CACHE */
-
-static errcode_t unix_open(const char *name, int flags, io_channel *channel)
-{
- io_channel io = NULL;
- struct unix_private_data *data = NULL;
- errcode_t retval;
- int open_flags;
- struct stat st;
-#ifdef __linux__
- struct utsname ut;
-#endif
-
- if (name == 0)
- return EXT2_ET_BAD_DEVICE_NAME;
- retval = ext2fs_get_mem(sizeof(struct struct_io_channel), &io);
- if (retval)
- return retval;
- memset(io, 0, sizeof(struct struct_io_channel));
- io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
- retval = ext2fs_get_mem(sizeof(struct unix_private_data), &data);
- if (retval)
- goto cleanup;
-
- io->manager = unix_io_manager;
- retval = ext2fs_get_mem(strlen(name)+1, &io->name);
- if (retval)
- goto cleanup;
-
- strcpy(io->name, name);
- io->private_data = data;
- io->block_size = 1024;
- io->read_error = 0;
- io->write_error = 0;
- io->refcount = 1;
-
- memset(data, 0, sizeof(struct unix_private_data));
- data->magic = EXT2_ET_MAGIC_UNIX_IO_CHANNEL;
-
- if ((retval = alloc_cache(io, data)))
- goto cleanup;
-
- open_flags = (flags & IO_FLAG_RW) ? O_RDWR : O_RDONLY;
-#ifdef CONFIG_LFS
- data->dev = open64(io->name, open_flags);
-#else
- data->dev = open(io->name, open_flags);
-#endif
- if (data->dev < 0) {
- retval = errno;
- goto cleanup;
- }
-
-#ifdef __linux__
-#undef RLIM_INFINITY
-#if (defined(__alpha__) || ((defined(__sparc__) || defined(__mips__)) && (SIZEOF_LONG == 4)))
-#define RLIM_INFINITY ((unsigned long)(~0UL>>1))
-#else
-#define RLIM_INFINITY (~0UL)
-#endif
- /*
- * Work around a bug in 2.4.10-2.4.18 kernels where writes to
- * block devices are wrongly getting hit by the filesize
- * limit. This workaround isn't perfect, since it won't work
- * if glibc wasn't built against 2.2 header files. (Sigh.)
- *
- */
- if ((flags & IO_FLAG_RW) &&
- (uname(&ut) == 0) &&
- ((ut.release[0] == '2') && (ut.release[1] == '.') &&
- (ut.release[2] == '4') && (ut.release[3] == '.') &&
- (ut.release[4] == '1') && (ut.release[5] >= '0') &&
- (ut.release[5] < '8')) &&
- (fstat(data->dev, &st) == 0) &&
- (S_ISBLK(st.st_mode))) {
- struct rlimit rlim;
-
- rlim.rlim_cur = rlim.rlim_max = (unsigned long) RLIM_INFINITY;
- setrlimit(RLIMIT_FSIZE, &rlim);
- getrlimit(RLIMIT_FSIZE, &rlim);
- if (((unsigned long) rlim.rlim_cur) <
- ((unsigned long) rlim.rlim_max)) {
- rlim.rlim_cur = rlim.rlim_max;
- setrlimit(RLIMIT_FSIZE, &rlim);
- }
- }
-#endif
- *channel = io;
- return 0;
-
-cleanup:
- if (data) {
- free_cache(data);
- ext2fs_free_mem(&data);
- }
- ext2fs_free_mem(&io);
- return retval;
-}
-
-static errcode_t unix_close(io_channel channel)
-{
- struct unix_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
- if (--channel->refcount > 0)
- return 0;
-
-#ifndef NO_IO_CACHE
- retval = flush_cached_blocks(channel, data, 0);
-#endif
-
- if (close(data->dev) < 0)
- retval = errno;
- free_cache(data);
-
- ext2fs_free_mem(&channel->private_data);
- ext2fs_free_mem(&channel->name);
- ext2fs_free_mem(&channel);
- return retval;
-}
-
-static errcode_t unix_set_blksize(io_channel channel, int blksize)
-{
- struct unix_private_data *data;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
- if (channel->block_size != blksize) {
-#ifndef NO_IO_CACHE
- if ((retval = flush_cached_blocks(channel, data, 0)))
- return retval;
-#endif
-
- channel->block_size = blksize;
- free_cache(data);
- if ((retval = alloc_cache(channel, data)))
- return retval;
- }
- return 0;
-}
-
-
-static errcode_t unix_read_blk(io_channel channel, unsigned long block,
- int count, void *buf)
-{
- struct unix_private_data *data;
- struct unix_cache *cache, *reuse[READ_DIRECT_SIZE];
- errcode_t retval;
- char *cp;
- int i, j;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
-#ifdef NO_IO_CACHE
- return raw_read_blk(channel, data, block, count, buf);
-#else
- /*
- * If we're doing an odd-sized read or a very large read,
- * flush out the cache and then do a direct read.
- */
- if (count < 0 || count > WRITE_DIRECT_SIZE) {
- if ((retval = flush_cached_blocks(channel, data, 0)))
- return retval;
- return raw_read_blk(channel, data, block, count, buf);
- }
-
- cp = buf;
- while (count > 0) {
- /* If it's in the cache, use it! */
- if ((cache = find_cached_block(data, block, &reuse[0]))) {
-#ifdef DEBUG
- printf("Using cached block %d\n", block);
-#endif
- memcpy(cp, cache->buf, channel->block_size);
- count--;
- block++;
- cp += channel->block_size;
- continue;
- }
- /*
- * Find the number of uncached blocks so we can do a
- * single read request
- */
- for (i=1; i < count; i++)
- if (find_cached_block(data, block+i, &reuse[i]))
- break;
-#ifdef DEBUG
- printf("Reading %d blocks starting at %d\n", i, block);
-#endif
- if ((retval = raw_read_blk(channel, data, block, i, cp)))
- return retval;
-
- /* Save the results in the cache */
- for (j=0; j < i; j++) {
- count--;
- cache = reuse[j];
- reuse_cache(channel, data, cache, block++);
- memcpy(cache->buf, cp, channel->block_size);
- cp += channel->block_size;
- }
- }
- return 0;
-#endif /* NO_IO_CACHE */
-}
-
-static errcode_t unix_write_blk(io_channel channel, unsigned long block,
- int count, const void *buf)
-{
- struct unix_private_data *data;
- struct unix_cache *cache, *reuse;
- errcode_t retval = 0;
- const char *cp;
- int writethrough;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
-#ifdef NO_IO_CACHE
- return raw_write_blk(channel, data, block, count, buf);
-#else
- /*
- * If we're doing an odd-sized write or a very large write,
- * flush out the cache completely and then do a direct write.
- */
- if (count < 0 || count > WRITE_DIRECT_SIZE) {
- if ((retval = flush_cached_blocks(channel, data, 1)))
- return retval;
- return raw_write_blk(channel, data, block, count, buf);
- }
-
- /*
- * For a moderate-sized multi-block write, first force a write
- * if we're in write-through cache mode, and then fill the
- * cache with the blocks.
- */
- writethrough = channel->flags & CHANNEL_FLAGS_WRITETHROUGH;
- if (writethrough)
- retval = raw_write_blk(channel, data, block, count, buf);
-
- cp = buf;
- while (count > 0) {
- cache = find_cached_block(data, block, &reuse);
- if (!cache) {
- cache = reuse;
- reuse_cache(channel, data, cache, block);
- }
- memcpy(cache->buf, cp, channel->block_size);
- cache->dirty = !writethrough;
- count--;
- block++;
- cp += channel->block_size;
- }
- return retval;
-#endif /* NO_IO_CACHE */
-}
-
-static errcode_t unix_write_byte(io_channel channel, unsigned long offset,
- int size, const void *buf)
-{
- struct unix_private_data *data;
- errcode_t retval = 0;
- ssize_t actual;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
-#ifndef NO_IO_CACHE
- /*
- * Flush out the cache completely
- */
- if ((retval = flush_cached_blocks(channel, data, 1)))
- return retval;
-#endif
-
- if (lseek(data->dev, offset + data->offset, SEEK_SET) < 0)
- return errno;
-
- actual = write(data->dev, buf, size);
- if (actual != size)
- return EXT2_ET_SHORT_WRITE;
-
- return 0;
-}
-
-/*
- * Flush data buffers to disk.
- */
-static errcode_t unix_flush(io_channel channel)
-{
- struct unix_private_data *data;
- errcode_t retval = 0;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
-#ifndef NO_IO_CACHE
- retval = flush_cached_blocks(channel, data, 0);
-#endif
- fsync(data->dev);
- return retval;
-}
-
-static errcode_t unix_set_option(io_channel channel, const char *option,
- const char *arg)
-{
- struct unix_private_data *data;
- unsigned long tmp;
- char *end;
-
- EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
- data = (struct unix_private_data *) channel->private_data;
- EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
-
- if (!strcmp(option, "offset")) {
- if (!arg)
- return EXT2_ET_INVALID_ARGUMENT;
-
- tmp = strtoul(arg, &end, 0);
- if (*end)
- return EXT2_ET_INVALID_ARGUMENT;
- data->offset = tmp;
- return 0;
- }
- return EXT2_ET_INVALID_ARGUMENT;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * unlink.c --- delete links in a ext2fs directory
- *
- * Copyright (C) 1993, 1994, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct link_struct {
- const char *name;
- int namelen;
- ext2_ino_t inode;
- int flags;
- struct ext2_dir_entry *prev;
- int done;
-};
-
-#ifdef __TURBOC__
-# pragma argsused
-#endif
-static int unlink_proc(struct ext2_dir_entry *dirent,
- int offset EXT2FS_ATTR((unused)),
- int blocksize EXT2FS_ATTR((unused)),
- char *buf EXT2FS_ATTR((unused)),
- void *priv_data)
-{
- struct link_struct *ls = (struct link_struct *) priv_data;
- struct ext2_dir_entry *prev;
-
- prev = ls->prev;
- ls->prev = dirent;
-
- if (ls->name) {
- if ((dirent->name_len & 0xFF) != ls->namelen)
- return 0;
- if (strncmp(ls->name, dirent->name, dirent->name_len & 0xFF))
- return 0;
- }
- if (ls->inode) {
- if (dirent->inode != ls->inode)
- return 0;
- } else {
- if (!dirent->inode)
- return 0;
- }
-
- if (prev)
- prev->rec_len += dirent->rec_len;
- else
- dirent->inode = 0;
- ls->done++;
- return DIRENT_ABORT|DIRENT_CHANGED;
-}
-
-#ifdef __TURBOC__
- #pragma argsused
-#endif
-errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir,
- const char *name, ext2_ino_t ino,
- int flags EXT2FS_ATTR((unused)))
-{
- errcode_t retval;
- struct link_struct ls;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!name && !ino)
- return EXT2_ET_INVALID_ARGUMENT;
-
- if (!(fs->flags & EXT2_FLAG_RW))
- return EXT2_ET_RO_FILSYS;
-
- ls.name = name;
- ls.namelen = name ? strlen(name) : 0;
- ls.inode = ino;
- ls.flags = 0;
- ls.done = 0;
- ls.prev = 0;
-
- retval = ext2fs_dir_iterate(fs, dir, DIRENT_FLAG_INCLUDE_EMPTY,
- 0, unlink_proc, &ls);
- if (retval)
- return retval;
-
- return (ls.done) ? 0 : EXT2_ET_DIR_NO_SPACE;
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * valid_blk.c --- does the inode have valid blocks?
- *
- * Copyright 1997 by Theodore Ts'o
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- *
- */
-
-#include <stdio.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <time.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-/*
- * This function returns 1 if the inode's block entries actually
- * contain block entries.
- */
-int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode)
-{
- /*
- * Only directories, regular files, and some symbolic links
- * have valid block entries.
- */
- if (!LINUX_S_ISDIR(inode->i_mode) && !LINUX_S_ISREG(inode->i_mode) &&
- !LINUX_S_ISLNK(inode->i_mode))
- return 0;
-
- /*
- * If the symbolic link is a "fast symlink", then the symlink
- * target is stored in the block entries.
- */
- if (LINUX_S_ISLNK (inode->i_mode)) {
- if (inode->i_file_acl == 0) {
- /* With no EA block, we can rely on i_blocks */
- if (inode->i_blocks == 0)
- return 0;
- } else {
- /* With an EA block, life gets more tricky */
- if (inode->i_size >= EXT2_N_BLOCKS*4)
- return 1; /* definitely using i_block[] */
- if (inode->i_size > 4 && inode->i_block[1] == 0)
- return 1; /* definitely using i_block[] */
- return 0; /* Probably a fast symlink */
- }
- }
- return 1;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * version.c --- Return the version of the ext2 library
- *
- * Copyright (C) 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <stdio.h>
-#include <ctype.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-static const char *lib_version = E2FSPROGS_VERSION;
-static const char *lib_date = E2FSPROGS_DATE;
-
-int ext2fs_parse_version_string(const char *ver_string)
-{
- const char *cp;
- int version = 0;
-
- for (cp = ver_string; *cp; cp++) {
- if (*cp == '.')
- continue;
- if (!isdigit(*cp))
- break;
- version = (version * 10) + (*cp - '0');
- }
- return version;
-}
-
-
-int ext2fs_get_library_version(const char **ver_string,
- const char **date_string)
-{
- if (ver_string)
- *ver_string = lib_version;
- if (date_string)
- *date_string = lib_date;
-
- return ext2fs_parse_version_string(lib_version);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * write_bb_file.c --- write a list of bad blocks to a FILE *
- *
- * Copyright (C) 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
- unsigned int flags EXT2FS_ATTR((unused)),
- FILE *f)
-{
- badblocks_iterate bb_iter;
- blk_t blk;
- errcode_t retval;
-
- retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
- if (retval)
- return retval;
-
- while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
- fprintf(f, "%d\n", blk);
- }
- ext2fs_badblocks_list_iterate_end(bb_iter);
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * pfsck --- A generic, parallelizing front-end for the fsck program.
- * It will automatically try to run fsck programs in parallel if the
- * devices are on separate spindles. It is based on the same ideas as
- * the generic front end for fsck by David Engel and Fred van Kempen,
- * but it has been completely rewritten from scratch to support
- * parallel execution.
- *
- * Written by Theodore Ts'o, <tytso@mit.edu>
- *
- * Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:
- * o Changed -t fstype to behave like with mount when -A (all file
- * systems) or -M (like mount) is specified.
- * o fsck looks if it can find the fsck.type program to decide
- * if it should ignore the fs type. This way more fsck programs
- * can be added without changing this front-end.
- * o -R flag skip root file system.
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- * 2001, 2002, 2003, 2004, 2005 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <limits.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <time.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <paths.h>
-#include <unistd.h>
-#include <errno.h>
-#include <signal.h>
-
-#include "fsck.h"
-#include "blkid/blkid.h"
-
-#include "e2fsbb.h"
-
-#include "busybox.h"
-
-#ifndef _PATH_MNTTAB
-#define _PATH_MNTTAB "/etc/fstab"
-#endif
-
-/*
- * fsck.h
- */
-
-#ifndef DEFAULT_FSTYPE
-#define DEFAULT_FSTYPE "ext2"
-#endif
-
-#define MAX_DEVICES 32
-#define MAX_ARGS 32
-
-/*
- * Internal structure for mount tabel entries.
- */
-
-struct fs_info {
- char *device;
- char *mountpt;
- char *type;
- char *opts;
- int freq;
- int passno;
- int flags;
- struct fs_info *next;
-};
-
-#define FLAG_DONE 1
-#define FLAG_PROGRESS 2
-
-/*
- * Structure to allow exit codes to be stored
- */
-struct fsck_instance {
- int pid;
- int flags;
- int exit_status;
- time_t start_time;
- char * prog;
- char * type;
- char * device;
- char * base_device;
- struct fsck_instance *next;
-};
-
-/*
- * base_device.c
- *
- * Return the "base device" given a particular device; this is used to
- * assure that we only fsck one partition on a particular drive at any
- * one time. Otherwise, the disk heads will be seeking all over the
- * place. If the base device cannot be determined, return NULL.
- *
- * The base_device() function returns an allocated string which must
- * be freed.
- *
- */
-
-
-#ifdef CONFIG_FEATURE_DEVFS
-/*
- * Required for the uber-silly devfs /dev/ide/host1/bus2/target3/lun3
- * pathames.
- */
-static const char * const devfs_hier[] = {
- "host", "bus", "target", "lun", 0
-};
-#endif
-
-static char *base_device(const char *device)
-{
- char *str, *cp;
-#ifdef CONFIG_FEATURE_DEVFS
- const char * const *hier;
- const char *disk;
- int len;
-#endif
-
- cp = str = xstrdup(device);
-
- /* Skip over /dev/; if it's not present, give up. */
- if (strncmp(cp, "/dev/", 5) != 0)
- goto errout;
- cp += 5;
-
- /*
- * For md devices, we treat them all as if they were all
- * on one disk, since we don't know how to parallelize them.
- */
- if (cp[0] == 'm' && cp[1] == 'd') {
- *(cp+2) = 0;
- return str;
- }
-
- /* Handle DAC 960 devices */
- if (strncmp(cp, "rd/", 3) == 0) {
- cp += 3;
- if (cp[0] != 'c' || cp[2] != 'd' ||
- !isdigit(cp[1]) || !isdigit(cp[3]))
- goto errout;
- *(cp+4) = 0;
- return str;
- }
-
- /* Now let's handle /dev/hd* and /dev/sd* devices.... */
- if ((cp[0] == 'h' || cp[0] == 's') && (cp[1] == 'd')) {
- cp += 2;
- /* If there's a single number after /dev/hd, skip it */
- if (isdigit(*cp))
- cp++;
- /* What follows must be an alpha char, or give up */
- if (!isalpha(*cp))
- goto errout;
- *(cp + 1) = 0;
- return str;
- }
-
-#ifdef CONFIG_FEATURE_DEVFS
- /* Now let's handle devfs (ugh) names */
- len = 0;
- if (strncmp(cp, "ide/", 4) == 0)
- len = 4;
- if (strncmp(cp, "scsi/", 5) == 0)
- len = 5;
- if (len) {
- cp += len;
- /*
- * Now we proceed down the expected devfs hierarchy.
- * i.e., .../host1/bus2/target3/lun4/...
- * If we don't find the expected token, followed by
- * some number of digits at each level, abort.
- */
- for (hier = devfs_hier; *hier; hier++) {
- len = strlen(*hier);
- if (strncmp(cp, *hier, len) != 0)
- goto errout;
- cp += len;
- while (*cp != '/' && *cp != 0) {
- if (!isdigit(*cp))
- goto errout;
- cp++;
- }
- cp++;
- }
- *(cp - 1) = 0;
- return str;
- }
-
- /* Now handle devfs /dev/disc or /dev/disk names */
- disk = 0;
- if (strncmp(cp, "discs/", 6) == 0)
- disk = "disc";
- else if (strncmp(cp, "disks/", 6) == 0)
- disk = "disk";
- if (disk) {
- cp += 6;
- if (strncmp(cp, disk, 4) != 0)
- goto errout;
- cp += 4;
- while (*cp != '/' && *cp != 0) {
- if (!isdigit(*cp))
- goto errout;
- cp++;
- }
- *cp = 0;
- return str;
- }
-#endif
-
-errout:
- free(str);
- return NULL;
-}
-
-
-static const char * const ignored_types[] = {
- "ignore",
- "iso9660",
- "nfs",
- "proc",
- "sw",
- "swap",
- "tmpfs",
- "devpts",
- NULL
-};
-
-static const char * const really_wanted[] = {
- "minix",
- "ext2",
- "ext3",
- "jfs",
- "reiserfs",
- "xiafs",
- "xfs",
- NULL
-};
-
-#define BASE_MD "/dev/md"
-
-/*
- * Global variables for options
- */
-static char *devices[MAX_DEVICES];
-static char *args[MAX_ARGS];
-static int num_devices, num_args;
-
-static int verbose;
-static int doall;
-static int noexecute;
-static int serialize;
-static int skip_root;
-static int like_mount;
-static int notitle;
-static int parallel_root;
-static int progress;
-static int progress_fd;
-static int force_all_parallel;
-static int num_running;
-static int max_running;
-static volatile int cancel_requested;
-static int kill_sent;
-static char *fstype;
-static struct fs_info *filesys_info, *filesys_last;
-static struct fsck_instance *instance_list;
-static char *fsck_path;
-static blkid_cache cache;
-
-static char *string_copy(const char *s)
-{
- char *ret;
-
- if (!s)
- return 0;
- ret = strdup(s);
- return ret;
-}
-
-static int string_to_int(const char *s)
-{
- long l;
- char *p;
-
- l = strtol(s, &p, 0);
- if (*p || l == LONG_MIN || l == LONG_MAX || l < 0 || l > INT_MAX)
- return -1;
- else
- return (int) l;
-}
-
-static char *skip_over_blank(char *cp)
-{
- while (*cp && isspace(*cp))
- cp++;
- return cp;
-}
-
-static char *skip_over_word(char *cp)
-{
- while (*cp && !isspace(*cp))
- cp++;
- return cp;
-}
-
-static void strip_line(char *line)
-{
- char *p;
-
- while (*line) {
- p = line + strlen(line) - 1;
- if ((*p == '\n') || (*p == '\r'))
- *p = 0;
- else
- break;
- }
-}
-
-static char *parse_word(char **buf)
-{
- char *word, *next;
-
- word = *buf;
- if (*word == 0)
- return 0;
-
- word = skip_over_blank(word);
- next = skip_over_word(word);
- if (*next)
- *next++ = 0;
- *buf = next;
- return word;
-}
-
-static void parse_escape(char *word)
-{
- char *q, c;
- const char *p;
-
- if (!word)
- return;
-
- for (p = q = word; *p; q++) {
- c = *p++;
- if (c != '\\') {
- *q = c;
- } else {
- *q = bb_process_escape_sequence(&p);
- }
- }
- *q = 0;
-}
-
-static void free_instance(struct fsck_instance *i)
-{
- if (i->prog)
- free(i->prog);
- if (i->device)
- free(i->device);
- if (i->base_device)
- free(i->base_device);
- free(i);
- return;
-}
-
-static struct fs_info *create_fs_device(const char *device, const char *mntpnt,
- const char *type, const char *opts,
- int freq, int passno)
-{
- struct fs_info *fs;
-
- if (!(fs = malloc(sizeof(struct fs_info))))
- return NULL;
-
- fs->device = string_copy(device);
- fs->mountpt = string_copy(mntpnt);
- fs->type = string_copy(type);
- fs->opts = string_copy(opts ? opts : "");
- fs->freq = freq;
- fs->passno = passno;
- fs->flags = 0;
- fs->next = NULL;
-
- if (!filesys_info)
- filesys_info = fs;
- else
- filesys_last->next = fs;
- filesys_last = fs;
-
- return fs;
-}
-
-
-
-static int parse_fstab_line(char *line, struct fs_info **ret_fs)
-{
- char *dev, *device, *mntpnt, *type, *opts, *freq, *passno, *cp;
- struct fs_info *fs;
-
- *ret_fs = 0;
- strip_line(line);
- if ((cp = strchr(line, '#')))
- *cp = 0; /* Ignore everything after the comment char */
- cp = line;
-
- device = parse_word(&cp);
- mntpnt = parse_word(&cp);
- type = parse_word(&cp);
- opts = parse_word(&cp);
- freq = parse_word(&cp);
- passno = parse_word(&cp);
-
- if (!device)
- return 0; /* Allow blank lines */
-
- if (!mntpnt || !type)
- return -1;
-
- parse_escape(device);
- parse_escape(mntpnt);
- parse_escape(type);
- parse_escape(opts);
- parse_escape(freq);
- parse_escape(passno);
-
- dev = blkid_get_devname(cache, device, NULL);
- if (dev)
- device = dev;
-
- if (strchr(type, ','))
- type = 0;
-
- fs = create_fs_device(device, mntpnt, type ? type : "auto", opts,
- freq ? atoi(freq) : -1,
- passno ? atoi(passno) : -1);
- if (dev)
- free(dev);
-
- if (!fs)
- return -1;
- *ret_fs = fs;
- return 0;
-}
-
-static void interpret_type(struct fs_info *fs)
-{
- char *t;
-
- if (strcmp(fs->type, "auto") != 0)
- return;
- t = blkid_get_tag_value(cache, "TYPE", fs->device);
- if (t) {
- free(fs->type);
- fs->type = t;
- }
-}
-
-/*
- * Load the filesystem database from /etc/fstab
- */
-static void load_fs_info(const char *filename)
-{
- FILE *f;
- char buf[1024];
- int lineno = 0;
- int old_fstab = 1;
- struct fs_info *fs;
-
- if ((f = fopen(filename, "r")) == NULL) {
- bb_perror_msg("WARNING: cannot open %s", filename);
- return;
- }
- while (!feof(f)) {
- lineno++;
- if (!fgets(buf, sizeof(buf), f))
- break;
- buf[sizeof(buf)-1] = 0;
- if (parse_fstab_line(buf, &fs) < 0) {
- bb_error_msg("WARNING: bad format "
- "on line %d of %s\n", lineno, filename);
- continue;
- }
- if (!fs)
- continue;
- if (fs->passno < 0)
- fs->passno = 0;
- else
- old_fstab = 0;
- }
-
- fclose(f);
-
- if (old_fstab) {
- fputs("\007\007\007"
- "WARNING: Your /etc/fstab does not contain the fsck passno\n"
- " field. I will kludge around things for you, but you\n"
- " should fix your /etc/fstab file as soon as you can.\n\n", stderr);
-
- for (fs = filesys_info; fs; fs = fs->next) {
- fs->passno = 1;
- }
- }
-}
-
-/* Lookup filesys in /etc/fstab and return the corresponding entry. */
-static struct fs_info *lookup(char *filesys)
-{
- struct fs_info *fs;
-
- /* No filesys name given. */
- if (filesys == NULL)
- return NULL;
-
- for (fs = filesys_info; fs; fs = fs->next) {
- if (!strcmp(filesys, fs->device) ||
- (fs->mountpt && !strcmp(filesys, fs->mountpt)))
- break;
- }
-
- return fs;
-}
-
-/* Find fsck program for a given fs type. */
-static char *find_fsck(char *type)
-{
- char *s;
- const char *tpl;
- char *p = string_copy(fsck_path);
- struct stat st;
-
- /* Are we looking for a program or just a type? */
- tpl = (strncmp(type, "fsck.", 5) ? "%s/fsck.%s" : "%s/%s");
-
- for(s = strtok(p, ":"); s; s = strtok(NULL, ":")) {
- s = xasprintf(tpl, s, type);
- if (stat(s, &st) == 0) break;
- free(s);
- }
- free(p);
- return s;
-}
-
-static int progress_active(void)
-{
- struct fsck_instance *inst;
-
- for (inst = instance_list; inst; inst = inst->next) {
- if (inst->flags & FLAG_DONE)
- continue;
- if (inst->flags & FLAG_PROGRESS)
- return 1;
- }
- return 0;
-}
-
-/*
- * Execute a particular fsck program, and link it into the list of
- * child processes we are waiting for.
- */
-static int execute(const char *type, const char *device, const char *mntpt,
- int interactive)
-{
- char *s, *argv[80];
- char *prog;
- int argc, i;
- struct fsck_instance *inst, *p;
- pid_t pid;
-
- inst = malloc(sizeof(struct fsck_instance));
- if (!inst)
- return ENOMEM;
- memset(inst, 0, sizeof(struct fsck_instance));
-
- prog = xasprintf("fsck.%s", type);
- argv[0] = prog;
- argc = 1;
-
- for (i=0; i <num_args; i++)
- argv[argc++] = string_copy(args[i]);
-
- if (progress && !progress_active()) {
- if ((strcmp(type, "ext2") == 0) ||
- (strcmp(type, "ext3") == 0)) {
- char tmp[80];
- snprintf(tmp, 80, "-C%d", progress_fd);
- argv[argc++] = string_copy(tmp);
- inst->flags |= FLAG_PROGRESS;
- }
- }
-
- argv[argc++] = string_copy(device);
- argv[argc] = 0;
-
- s = find_fsck(prog);
- if (s == NULL) {
- bb_error_msg("%s: not found", prog);
- return ENOENT;
- }
-
- if (verbose || noexecute) {
- printf("[%s (%d) -- %s] ", s, num_running,
- mntpt ? mntpt : device);
- for (i=0; i < argc; i++)
- printf("%s ", argv[i]);
- puts("");
- }
-
- /* Fork and execute the correct program. */
- if (noexecute)
- pid = -1;
- else if ((pid = fork()) < 0) {
- perror("fork");
- return errno;
- } else if (pid == 0) {
- if (!interactive)
- close(0);
- (void) execv(s, argv);
- bb_perror_msg_and_die("%s", argv[0]);
- }
-
- for (i = 1; i < argc; i++)
- free(argv[i]);
-
- free(s);
- inst->pid = pid;
- inst->prog = prog;
- inst->type = string_copy(type);
- inst->device = string_copy(device);
- inst->base_device = base_device(device);
- inst->start_time = time(0);
- inst->next = NULL;
-
- /*
- * Find the end of the list, so we add the instance on at the end.
- */
- for (p = instance_list; p && p->next; p = p->next);
-
- if (p)
- p->next = inst;
- else
- instance_list = inst;
-
- return 0;
-}
-
-/*
- * Send a signal to all outstanding fsck child processes
- */
-static int kill_all(int signum)
-{
- struct fsck_instance *inst;
- int n = 0;
-
- for (inst = instance_list; inst; inst = inst->next) {
- if (inst->flags & FLAG_DONE)
- continue;
- kill(inst->pid, signum);
- n++;
- }
- return n;
-}
-
-/*
- * Wait for one child process to exit; when it does, unlink it from
- * the list of executing child processes, and return it.
- */
-static struct fsck_instance *wait_one(int flags)
-{
- int status;
- int sig;
- struct fsck_instance *inst, *inst2, *prev;
- pid_t pid;
-
- if (!instance_list)
- return NULL;
-
- if (noexecute) {
- inst = instance_list;
- prev = 0;
-#ifdef RANDOM_DEBUG
- while (inst->next && (random() & 1)) {
- prev = inst;
- inst = inst->next;
- }
-#endif
- inst->exit_status = 0;
- goto ret_inst;
- }
-
- /*
- * gcc -Wall fails saving throw against stupidity
- * (inst and prev are thought to be uninitialized variables)
- */
- inst = prev = NULL;
-
- do {
- pid = waitpid(-1, &status, flags);
- if (cancel_requested && !kill_sent) {
- kill_all(SIGTERM);
- kill_sent++;
- }
- if ((pid == 0) && (flags & WNOHANG))
- return NULL;
- if (pid < 0) {
- if ((errno == EINTR) || (errno == EAGAIN))
- continue;
- if (errno == ECHILD) {
- bb_error_msg("wait: no more child process?!?");
- return NULL;
- }
- perror("wait");
- continue;
- }
- for (prev = 0, inst = instance_list;
- inst;
- prev = inst, inst = inst->next) {
- if (inst->pid == pid)
- break;
- }
- } while (!inst);
-
- if (WIFEXITED(status))
- status = WEXITSTATUS(status);
- else if (WIFSIGNALED(status)) {
- sig = WTERMSIG(status);
- if (sig == SIGINT) {
- status = EXIT_UNCORRECTED;
- } else {
- printf("Warning... %s for device %s exited "
- "with signal %d.\n",
- inst->prog, inst->device, sig);
- status = EXIT_ERROR;
- }
- } else {
- printf("%s %s: status is %x, should never happen.\n",
- inst->prog, inst->device, status);
- status = EXIT_ERROR;
- }
- inst->exit_status = status;
- if (progress && (inst->flags & FLAG_PROGRESS) &&
- !progress_active()) {
- for (inst2 = instance_list; inst2; inst2 = inst2->next) {
- if (inst2->flags & FLAG_DONE)
- continue;
- if (strcmp(inst2->type, "ext2") &&
- strcmp(inst2->type, "ext3"))
- continue;
- /*
- * If we've just started the fsck, wait a tiny
- * bit before sending the kill, to give it
- * time to set up the signal handler
- */
- if (inst2->start_time < time(0)+2) {
- if (fork() == 0) {
- sleep(1);
- kill(inst2->pid, SIGUSR1);
- exit(0);
- }
- } else
- kill(inst2->pid, SIGUSR1);
- inst2->flags |= FLAG_PROGRESS;
- break;
- }
- }
-ret_inst:
- if (prev)
- prev->next = inst->next;
- else
- instance_list = inst->next;
- if (verbose > 1)
- printf("Finished with %s (exit status %d)\n",
- inst->device, inst->exit_status);
- num_running--;
- return inst;
-}
-
-#define FLAG_WAIT_ALL 0
-#define FLAG_WAIT_ATLEAST_ONE 1
-/*
- * Wait until all executing child processes have exited; return the
- * logical OR of all of their exit code values.
- */
-static int wait_many(int flags)
-{
- struct fsck_instance *inst;
- int global_status = 0;
- int wait_flags = 0;
-
- while ((inst = wait_one(wait_flags))) {
- global_status |= inst->exit_status;
- free_instance(inst);
-#ifdef RANDOM_DEBUG
- if (noexecute && (flags & WNOHANG) && !(random() % 3))
- break;
-#endif
- if (flags & FLAG_WAIT_ATLEAST_ONE)
- wait_flags = WNOHANG;
- }
- return global_status;
-}
-
-/*
- * Run the fsck program on a particular device
- *
- * If the type is specified using -t, and it isn't prefixed with "no"
- * (as in "noext2") and only one filesystem type is specified, then
- * use that type regardless of what is specified in /etc/fstab.
- *
- * If the type isn't specified by the user, then use either the type
- * specified in /etc/fstab, or DEFAULT_FSTYPE.
- */
-static void fsck_device(struct fs_info *fs, int interactive)
-{
- const char *type;
- int retval;
-
- interpret_type(fs);
-
- if (strcmp(fs->type, "auto") != 0)
- type = fs->type;
- else if (fstype && strncmp(fstype, "no", 2) &&
- strncmp(fstype, "opts=", 5) && strncmp(fstype, "loop", 4) &&
- !strchr(fstype, ','))
- type = fstype;
- else
- type = DEFAULT_FSTYPE;
-
- num_running++;
- retval = execute(type, fs->device, fs->mountpt, interactive);
- if (retval) {
- bb_error_msg("error %d while executing fsck.%s for %s",
- retval, type, fs->device);
- num_running--;
- }
-}
-
-
-/*
- * Deal with the fsck -t argument.
- */
-struct fs_type_compile {
- char **list;
- int *type;
- int negate;
-} fs_type_compiled;
-
-#define FS_TYPE_NORMAL 0
-#define FS_TYPE_OPT 1
-#define FS_TYPE_NEGOPT 2
-
-static const char fs_type_syntax_error[] =
-"Either all or none of the filesystem types passed to -t must be prefixed\n"
- "with 'no' or '!'.";
-
-static void compile_fs_type(char *fs_type, struct fs_type_compile *cmp)
-{
- char *cp, *list, *s;
- int num = 2;
- int negate, first_negate = 1;
-
- if (fs_type) {
- for (cp=fs_type; *cp; cp++) {
- if (*cp == ',')
- num++;
- }
- }
-
- cmp->list = xzalloc(num * sizeof(char *));
- cmp->type = xzalloc(num * sizeof(int));
- cmp->negate = 0;
-
- if (!fs_type)
- return;
-
- list = string_copy(fs_type);
- num = 0;
- s = strtok(list, ",");
- while(s) {
- negate = 0;
- if (strncmp(s, "no", 2) == 0) {
- s += 2;
- negate = 1;
- } else if (*s == '!') {
- s++;
- negate = 1;
- }
- if (strcmp(s, "loop") == 0)
- /* loop is really short-hand for opts=loop */
- goto loop_special_case;
- else if (strncmp(s, "opts=", 5) == 0) {
- s += 5;
- loop_special_case:
- cmp->type[num] = negate ? FS_TYPE_NEGOPT : FS_TYPE_OPT;
- } else {
- if (first_negate) {
- cmp->negate = negate;
- first_negate = 0;
- }
- if ((negate && !cmp->negate) ||
- (!negate && cmp->negate)) {
- bb_error_msg_and_die("%s", fs_type_syntax_error);
- }
- }
- cmp->list[num++] = string_copy(s);
- s = strtok(NULL, ",");
- }
- free(list);
-}
-
-/*
- * This function returns true if a particular option appears in a
- * comma-delimited options list
- */
-static int opt_in_list(char *opt, char *optlist)
-{
- char *list, *s;
-
- if (!optlist)
- return 0;
- list = string_copy(optlist);
-
- s = strtok(list, ",");
- while(s) {
- if (strcmp(s, opt) == 0) {
- free(list);
- return 1;
- }
- s = strtok(NULL, ",");
- }
- free(list);
- return 0;
-}
-
-/* See if the filesystem matches the criteria given by the -t option */
-static int fs_match(struct fs_info *fs, struct fs_type_compile *cmp)
-{
- int n, ret = 0, checked_type = 0;
- char *cp;
-
- if (cmp->list == 0 || cmp->list[0] == 0)
- return 1;
-
- for (n=0; (cp = cmp->list[n]); n++) {
- switch (cmp->type[n]) {
- case FS_TYPE_NORMAL:
- checked_type++;
- if (strcmp(cp, fs->type) == 0) {
- ret = 1;
- }
- break;
- case FS_TYPE_NEGOPT:
- if (opt_in_list(cp, fs->opts))
- return 0;
- break;
- case FS_TYPE_OPT:
- if (!opt_in_list(cp, fs->opts))
- return 0;
- break;
- }
- }
- if (checked_type == 0)
- return 1;
- return (cmp->negate ? !ret : ret);
-}
-
-/* Check if we should ignore this filesystem. */
-static int ignore(struct fs_info *fs)
-{
- int wanted;
- char *s;
-
- /*
- * If the pass number is 0, ignore it.
- */
- if (fs->passno == 0)
- return 1;
-
- interpret_type(fs);
-
- /*
- * If a specific fstype is specified, and it doesn't match,
- * ignore it.
- */
- if (!fs_match(fs, &fs_type_compiled)) return 1;
-
- /* Are we ignoring this type? */
- if (index_in_str_array(ignored_types, fs->type) >= 0)
- return 1;
-
- /* Do we really really want to check this fs? */
- wanted = index_in_str_array(really_wanted, fs->type) >= 0;
-
- /* See if the <fsck.fs> program is available. */
- s = find_fsck(fs->type);
- if (s == NULL) {
- if (wanted)
- bb_error_msg("cannot check %s: fsck.%s not found",
- fs->device, fs->type);
- return 1;
- }
- free(s);
-
- /* We can and want to check this file system type. */
- return 0;
-}
-
-/*
- * Returns TRUE if a partition on the same disk is already being
- * checked.
- */
-static int device_already_active(char *device)
-{
- struct fsck_instance *inst;
- char *base;
-
- if (force_all_parallel)
- return 0;
-
-#ifdef BASE_MD
- /* Don't check a soft raid disk with any other disk */
- if (instance_list &&
- (!strncmp(instance_list->device, BASE_MD, sizeof(BASE_MD)-1) ||
- !strncmp(device, BASE_MD, sizeof(BASE_MD)-1)))
- return 1;
-#endif
-
- base = base_device(device);
- /*
- * If we don't know the base device, assume that the device is
- * already active if there are any fsck instances running.
- */
- if (!base)
- return (instance_list != 0);
- for (inst = instance_list; inst; inst = inst->next) {
- if (!inst->base_device || !strcmp(base, inst->base_device)) {
- free(base);
- return 1;
- }
- }
- free(base);
- return 0;
-}
-
-/* Check all file systems, using the /etc/fstab table. */
-static int check_all(void)
-{
- struct fs_info *fs = NULL;
- int status = EXIT_OK;
- int not_done_yet = 1;
- int passno = 1;
- int pass_done;
-
- if (verbose)
- fputs("Checking all file systems.\n", stdout);
-
- /*
- * Do an initial scan over the filesystem; mark filesystems
- * which should be ignored as done, and resolve any "auto"
- * filesystem types (done as a side-effect of calling ignore()).
- */
- for (fs = filesys_info; fs; fs = fs->next) {
- if (ignore(fs))
- fs->flags |= FLAG_DONE;
- }
-
- /*
- * Find and check the root filesystem.
- */
- if (!parallel_root) {
- for (fs = filesys_info; fs; fs = fs->next) {
- if (LONE_CHAR(fs->mountpt, '/'))
- break;
- }
- if (fs) {
- if (!skip_root && !ignore(fs)) {
- fsck_device(fs, 1);
- status |= wait_many(FLAG_WAIT_ALL);
- if (status > EXIT_NONDESTRUCT)
- return status;
- }
- fs->flags |= FLAG_DONE;
- }
- }
- /*
- * This is for the bone-headed user who enters the root
- * filesystem twice. Skip root will skep all root entries.
- */
- if (skip_root)
- for (fs = filesys_info; fs; fs = fs->next)
- if (LONE_CHAR(fs->mountpt, '/'))
- fs->flags |= FLAG_DONE;
-
- while (not_done_yet) {
- not_done_yet = 0;
- pass_done = 1;
-
- for (fs = filesys_info; fs; fs = fs->next) {
- if (cancel_requested)
- break;
- if (fs->flags & FLAG_DONE)
- continue;
- /*
- * If the filesystem's pass number is higher
- * than the current pass number, then we don't
- * do it yet.
- */
- if (fs->passno > passno) {
- not_done_yet++;
- continue;
- }
- /*
- * If a filesystem on a particular device has
- * already been spawned, then we need to defer
- * this to another pass.
- */
- if (device_already_active(fs->device)) {
- pass_done = 0;
- continue;
- }
- /*
- * Spawn off the fsck process
- */
- fsck_device(fs, serialize);
- fs->flags |= FLAG_DONE;
-
- /*
- * Only do one filesystem at a time, or if we
- * have a limit on the number of fsck's extant
- * at one time, apply that limit.
- */
- if (serialize ||
- (max_running && (num_running >= max_running))) {
- pass_done = 0;
- break;
- }
- }
- if (cancel_requested)
- break;
- if (verbose > 1)
- printf("--waiting-- (pass %d)\n", passno);
- status |= wait_many(pass_done ? FLAG_WAIT_ALL :
- FLAG_WAIT_ATLEAST_ONE);
- if (pass_done) {
- if (verbose > 1)
- printf("----------------------------------\n");
- passno++;
- } else
- not_done_yet++;
- }
- if (cancel_requested && !kill_sent) {
- kill_all(SIGTERM);
- kill_sent++;
- }
- status |= wait_many(FLAG_WAIT_ATLEAST_ONE);
- return status;
-}
-
-static void signal_cancel(int sig FSCK_ATTR((unused)))
-{
- cancel_requested++;
-}
-
-static void PRS(int argc, char *argv[])
-{
- int i, j;
- char *arg, *dev, *tmp = 0;
- char options[128];
- int opt = 0;
- int opts_for_fsck = 0;
- struct sigaction sa;
-
- /*
- * Set up signal action
- */
- memset(&sa, 0, sizeof(struct sigaction));
- sa.sa_handler = signal_cancel;
- sigaction(SIGINT, &sa, 0);
- sigaction(SIGTERM, &sa, 0);
-
- num_devices = 0;
- num_args = 0;
- instance_list = 0;
-
- for (i=1; i < argc; i++) {
- arg = argv[i];
- if (!arg)
- continue;
- if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
- if (num_devices >= MAX_DEVICES) {
- bb_error_msg_and_die("too many devices");
- }
- dev = blkid_get_devname(cache, arg, NULL);
- if (!dev && strchr(arg, '=')) {
- /*
- * Check to see if we failed because
- * /proc/partitions isn't found.
- */
- if (access("/proc/partitions", R_OK) < 0) {
- bb_perror_msg_and_die("cannot open /proc/partitions "
- "(is /proc mounted?)");
- }
- /*
- * Check to see if this is because
- * we're not running as root
- */
- if (geteuid())
- bb_error_msg_and_die(
- "must be root to scan for matching filesystems: %s\n", arg);
- else
- bb_error_msg_and_die(
- "cannot find matching filesystem: %s", arg);
- }
- devices[num_devices++] = dev ? dev : string_copy(arg);
- continue;
- }
- if (arg[0] != '-' || opts_for_fsck) {
- if (num_args >= MAX_ARGS) {
- bb_error_msg_and_die("too many arguments");
- }
- args[num_args++] = string_copy(arg);
- continue;
- }
- for (j=1; arg[j]; j++) {
- if (opts_for_fsck) {
- options[++opt] = arg[j];
- continue;
- }
- switch (arg[j]) {
- case 'A':
- doall++;
- break;
- case 'C':
- progress++;
- if (arg[j+1]) {
- progress_fd = string_to_int(arg+j+1);
- if (progress_fd < 0)
- progress_fd = 0;
- else
- goto next_arg;
- } else if ((i+1) < argc
- && argv[i+1][0] != '-') {
- progress_fd = string_to_int(argv[i]);
- if (progress_fd < 0)
- progress_fd = 0;
- else {
- goto next_arg;
- i++;
- }
- }
- break;
- case 'V':
- verbose++;
- break;
- case 'N':
- noexecute++;
- break;
- case 'R':
- skip_root++;
- break;
- case 'T':
- notitle++;
- break;
- case 'M':
- like_mount++;
- break;
- case 'P':
- parallel_root++;
- break;
- case 's':
- serialize++;
- break;
- case 't':
- tmp = 0;
- if (fstype)
- bb_show_usage();
- if (arg[j+1])
- tmp = arg+j+1;
- else if ((i+1) < argc)
- tmp = argv[++i];
- else
- bb_show_usage();
- fstype = string_copy(tmp);
- compile_fs_type(fstype, &fs_type_compiled);
- goto next_arg;
- case '-':
- opts_for_fsck++;
- break;
- case '?':
- bb_show_usage();
- break;
- default:
- options[++opt] = arg[j];
- break;
- }
- }
- next_arg:
- if (opt) {
- options[0] = '-';
- options[++opt] = '\0';
- if (num_args >= MAX_ARGS) {
- bb_error_msg("too many arguments");
- }
- args[num_args++] = string_copy(options);
- opt = 0;
- }
- }
- if (getenv("FSCK_FORCE_ALL_PARALLEL"))
- force_all_parallel++;
- if ((tmp = getenv("FSCK_MAX_INST")))
- max_running = atoi(tmp);
-}
-
-int fsck_main(int argc, char *argv[])
-{
- int i, status = 0;
- int interactive = 0;
- const char *fstab;
- struct fs_info *fs;
-
- setvbuf(stdout, NULL, _IONBF, BUFSIZ);
- setvbuf(stderr, NULL, _IONBF, BUFSIZ);
-
- blkid_get_cache(&cache, NULL);
- PRS(argc, argv);
-
- if (!notitle)
- printf("fsck %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
-
- fstab = getenv("FSTAB_FILE");
- if (!fstab)
- fstab = _PATH_MNTTAB;
- load_fs_info(fstab);
-
- fsck_path = e2fs_set_sbin_path();
-
- if ((num_devices == 1) || (serialize))
- interactive = 1;
-
- /* If -A was specified ("check all"), do that! */
- if (doall)
- return check_all();
-
- if (num_devices == 0) {
- serialize++;
- interactive++;
- return check_all();
- }
- for (i = 0 ; i < num_devices; i++) {
- if (cancel_requested) {
- if (!kill_sent) {
- kill_all(SIGTERM);
- kill_sent++;
- }
- break;
- }
- fs = lookup(devices[i]);
- if (!fs) {
- fs = create_fs_device(devices[i], 0, "auto",
- 0, -1, -1);
- if (!fs)
- continue;
- }
- fsck_device(fs, interactive);
- if (serialize ||
- (max_running && (num_running >= max_running))) {
- struct fsck_instance *inst;
-
- inst = wait_one(0);
- if (inst) {
- status |= inst->exit_status;
- free_instance(inst);
- }
- if (verbose > 1)
- printf("----------------------------------\n");
- }
- }
- status |= wait_many(FLAG_WAIT_ALL);
- blkid_put_cache(cache);
- return status;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * fsck.h
- */
-
-#define FSCK_ATTR(x) __attribute__(x)
-
-#define EXIT_OK 0
-#define EXIT_NONDESTRUCT 1
-#define EXIT_DESTRUCT 2
-#define EXIT_UNCORRECTED 4
-#define EXIT_ERROR 8
-#define EXIT_USAGE 16
-#define FSCK_CANCELED 32 /* Aborted with a signal or ^C */
-
-extern char *e2fs_set_sbin_path(void);
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * lsattr.c - List file attributes on an ext2 file system
- *
- * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * This file can be redistributed under the terms of the GNU General
- * Public License
- */
-
-/*
- * History:
- * 93/10/30 - Creation
- * 93/11/13 - Replace stat() calls by lstat() to avoid loops
- * 94/02/27 - Integrated in Ted's distribution
- * 98/12/29 - Display version info only when -V specified (G M Sipe)
- */
-
-#include <sys/types.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-
-#include "ext2fs/ext2_fs.h"
-#include "e2fsbb.h"
-#include "e2p/e2p.h"
-
-#define OPT_RECUR 1
-#define OPT_ALL 2
-#define OPT_DIRS_OPT 4
-#define OPT_PF_LONG 8
-#define OPT_GENERATION 16
-static int flags;
-
-static void list_attributes(const char *name)
-{
- unsigned long fsflags;
- unsigned long generation;
-
- if (fgetflags(name, &fsflags) == -1)
- goto read_err;
- if (flags & OPT_GENERATION) {
- if (fgetversion(name, &generation) == -1)
- goto read_err;
- printf("%5lu ", generation);
- }
-
- if (flags & OPT_PF_LONG) {
- printf("%-28s ", name);
- print_flags(stdout, fsflags, PFOPT_LONG);
- puts("");
- } else {
- print_flags(stdout, fsflags, 0);
- printf(" %s\n", name);
- }
-
- return;
-read_err:
- bb_perror_msg("reading %s", name);
-}
-
-static int lsattr_dir_proc(const char *, struct dirent *, void *);
-
-static void lsattr_args(const char *name)
-{
- struct stat st;
-
- if (lstat(name, &st) == -1) {
- bb_perror_msg("stating %s", name);
- } else {
- if (S_ISDIR(st.st_mode) && !(flags & OPT_DIRS_OPT))
- iterate_on_dir(name, lsattr_dir_proc, NULL);
- else
- list_attributes(name);
- }
-}
-
-static int lsattr_dir_proc(const char *dir_name, struct dirent *de,
- void *private)
-{
- struct stat st;
- char *path;
-
- path = concat_path_file(dir_name, de->d_name);
-
- if (lstat(path, &st) == -1)
- bb_perror_msg(path);
- else {
- if (de->d_name[0] != '.' || (flags & OPT_ALL)) {
- list_attributes(path);
- if (S_ISDIR(st.st_mode) && (flags & OPT_RECUR) &&
- (de->d_name[0] != '.' && (de->d_name[1] != '\0' ||
- (de->d_name[1] != '.' && de->d_name[2] != '\0')))) {
- printf("\n%s:\n", path);
- iterate_on_dir(path, lsattr_dir_proc, NULL);
- puts("");
- }
- }
- }
-
- free(path);
-
- return 0;
-}
-
-int lsattr_main(int argc, char **argv)
-{
- int i;
-
- flags = getopt32(argc, argv, "Radlv");
-
- if (optind > argc - 1)
- lsattr_args(".");
- else
- for (i = optind; i < argc; i++)
- lsattr_args(argv[i]);
-
- return EXIT_SUCCESS;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * mke2fs.c - Make a ext2fs filesystem.
- *
- * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- * 2003, 2004, 2005 by Theodore Ts'o.
- *
- * This file may be redistributed under the terms of the GNU Public
- * License.
- */
-
-/* Usage: mke2fs [options] device
- *
- * The device may be a block device or a image of one, but this isn't
- * enforced (but it's not much fun on a character device :-).
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <time.h>
-#include <getopt.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <mntent.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-
-#include "e2fsbb.h"
-#include "ext2fs/ext2_fs.h"
-#include "uuid/uuid.h"
-#include "e2p/e2p.h"
-#include "ext2fs/ext2fs.h"
-#include "util.h"
-
-#define STRIDE_LENGTH 8
-
-#ifndef __sparc__
-#define ZAP_BOOTBLOCK
-#endif
-
-static const char * device_name;
-
-/* Command line options */
-static int cflag;
-static int quiet;
-static int super_only;
-static int force;
-static int noaction;
-static int journal_size;
-static int journal_flags;
-static const char *bad_blocks_filename;
-static __u32 fs_stride;
-
-static struct ext2_super_block param;
-static char *creator_os;
-static char *volume_label;
-static char *mount_dir;
-static char *journal_device = NULL;
-static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
-
-static int sys_page_size = 4096;
-static int linux_version_code = 0;
-
-static int int_log2(int arg)
-{
- int l = 0;
-
- arg >>= 1;
- while (arg) {
- l++;
- arg >>= 1;
- }
- return l;
-}
-
-static int int_log10(unsigned int arg)
-{
- int l;
-
- for (l=0; arg ; l++)
- arg = arg / 10;
- return l;
-}
-
-/*
- * This function sets the default parameters for a filesystem
- *
- * The type is specified by the user. The size is the maximum size
- * (in megabytes) for which a set of parameters applies, with a size
- * of zero meaning that it is the default parameter for the type.
- * Note that order is important in the table below.
- */
-#define DEF_MAX_BLOCKSIZE -1
-static const char default_str[] = "default";
-struct mke2fs_defaults {
- const char *type;
- int size;
- int blocksize;
- int inode_ratio;
-};
-
-static const struct mke2fs_defaults settings[] = {
- { default_str, 0, 4096, 8192 },
- { default_str, 512, 1024, 4096 },
- { default_str, 3, 1024, 8192 },
- { "journal", 0, 4096, 8192 },
- { "news", 0, 4096, 4096 },
- { "largefile", 0, 4096, 1024 * 1024 },
- { "largefile4", 0, 4096, 4096 * 1024 },
- { 0, 0, 0, 0},
-};
-
-static void set_fs_defaults(const char *fs_type,
- struct ext2_super_block *super,
- int blocksize, int sector_size,
- int *inode_ratio)
-{
- int megs;
- int ratio = 0;
- const struct mke2fs_defaults *p;
- int use_bsize = 1024;
-
- megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
- if (inode_ratio)
- ratio = *inode_ratio;
- if (!fs_type)
- fs_type = default_str;
- for (p = settings; p->type; p++) {
- if ((strcmp(p->type, fs_type) != 0) &&
- (strcmp(p->type, default_str) != 0))
- continue;
- if ((p->size != 0) && (megs > p->size))
- continue;
- if (ratio == 0)
- *inode_ratio = p->inode_ratio < blocksize ?
- blocksize : p->inode_ratio;
- use_bsize = p->blocksize;
- }
- if (blocksize <= 0) {
- if (use_bsize == DEF_MAX_BLOCKSIZE) {
- use_bsize = sys_page_size;
- if ((linux_version_code < (2*65536 + 6*256)) &&
- (use_bsize > 4096))
- use_bsize = 4096;
- }
- if (sector_size && use_bsize < sector_size)
- use_bsize = sector_size;
- if ((blocksize < 0) && (use_bsize < (-blocksize)))
- use_bsize = -blocksize;
- blocksize = use_bsize;
- super->s_blocks_count /= blocksize / 1024;
- }
- super->s_log_frag_size = super->s_log_block_size =
- int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
-}
-
-
-/*
- * Helper function for read_bb_file and test_disk
- */
-static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
-{
- bb_error_msg("Bad block %u out of range; ignored", blk);
- return;
-}
-
-/*
- * Busybox stuff
- */
-static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)__attribute__ ((format (printf, 2, 3)));
-static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)
-{
- va_list ap;
-
- if (retval) {
- va_start(ap, fmt);
- fprintf(stderr,"\nCould not ");
- vfprintf(stderr, fmt, ap);
- fprintf(stderr, "\n");
- va_end(ap);
- exit(EXIT_FAILURE);
- }
-}
-
-static void mke2fs_verbose(const char *fmt, ...)__attribute__ ((format (printf, 1, 2)));
-static void mke2fs_verbose(const char *fmt, ...)
-{
- va_list ap;
-
- if (!quiet) {
- va_start(ap, fmt);
- vfprintf(stdout, fmt, ap);
- fflush(stdout);
- va_end(ap);
- }
-}
-
-static void mke2fs_verbose_done(void)
-{
- mke2fs_verbose("done\n");
-}
-
-static void mke2fs_warning_msg(int retval, char *fmt, ... )__attribute__ ((format (printf, 2, 3)));
-static void mke2fs_warning_msg(int retval, char *fmt, ... )
-{
- va_list ap;
-
- if (retval) {
- va_start(ap, fmt);
- fprintf(stderr,"\nWarning: ");
- vfprintf(stderr, fmt, ap);
- fprintf(stderr, "\n");
- va_end(ap);
- }
-}
-
-/*
- * Reads the bad blocks list from a file
- */
-static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
- const char *bad_blocks_file)
-{
- FILE *f;
- errcode_t retval;
-
- f = xfopen(bad_blocks_file, "r");
- retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
- fclose (f);
- mke2fs_error_msg_and_die(retval, "read bad blocks from list");
-}
-
-/*
- * Runs the badblocks program to test the disk
- */
-static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
-{
- FILE *f;
- errcode_t retval;
- char buf[1024];
-
- sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
- quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
- fs->device_name, fs->super->s_blocks_count);
- mke2fs_verbose("Running command: %s\n", buf);
- f = popen(buf, "r");
- if (!f) {
- bb_perror_msg_and_die("cannot run '%s'", buf);
- }
- retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
- pclose(f);
- mke2fs_error_msg_and_die(retval, "read bad blocks from program");
-}
-
-static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
-{
- dgrp_t i;
- blk_t j;
- unsigned must_be_good;
- blk_t blk;
- badblocks_iterate bb_iter;
- errcode_t retval;
- blk_t group_block;
- int group;
- int group_bad;
-
- if (!bb_list)
- return;
-
- /*
- * The primary superblock and group descriptors *must* be
- * good; if not, abort.
- */
- must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
- for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
- if (ext2fs_badblocks_list_test(bb_list, i)) {
- bb_error_msg_and_die(
- "Block %d in primary superblock/group descriptor area bad\n"
- "Blocks %d through %d must be good in order to build a filesystem\n"
- "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
- }
- }
-
- /*
- * See if any of the bad blocks are showing up in the backup
- * superblocks and/or group descriptors. If so, issue a
- * warning and adjust the block counts appropriately.
- */
- group_block = fs->super->s_first_data_block +
- fs->super->s_blocks_per_group;
-
- for (i = 1; i < fs->group_desc_count; i++) {
- group_bad = 0;
- for (j=0; j < fs->desc_blocks+1; j++) {
- if (ext2fs_badblocks_list_test(bb_list,
- group_block + j)) {
- mke2fs_warning_msg(!group_bad,
- "the backup superblock/group descriptors at block %d contain\n"
- "bad blocks\n", group_block);
- group_bad++;
- group = ext2fs_group_of_blk(fs, group_block+j);
- fs->group_desc[group].bg_free_blocks_count++;
- fs->super->s_free_blocks_count++;
- }
- }
- group_block += fs->super->s_blocks_per_group;
- }
-
- /*
- * Mark all the bad blocks as used...
- */
- retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
- mke2fs_error_msg_and_die(retval, "mark bad blocks as used");
-
- while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- ext2fs_badblocks_list_iterate_end(bb_iter);
-}
-
-/*
- * These functions implement a generalized progress meter.
- */
-struct progress_struct {
- char format[20];
- char backup[80];
- __u32 max;
- int skip_progress;
-};
-
-static void progress_init(struct progress_struct *progress,
- const char *label,__u32 max)
-{
- int i;
-
- memset(progress, 0, sizeof(struct progress_struct));
- if (quiet)
- return;
-
- /*
- * Figure out how many digits we need
- */
- i = int_log10(max);
- sprintf(progress->format, "%%%dd/%%%dld", i, i);
- memset(progress->backup, '\b', sizeof(progress->backup)-1);
- progress->backup[sizeof(progress->backup)-1] = 0;
- if ((2*i)+1 < (int) sizeof(progress->backup))
- progress->backup[(2*i)+1] = 0;
- progress->max = max;
-
- progress->skip_progress = 0;
- if (getenv("MKE2FS_SKIP_PROGRESS"))
- progress->skip_progress++;
-
- fputs(label, stdout);
- fflush(stdout);
-}
-
-static void progress_update(struct progress_struct *progress, __u32 val)
-{
- if ((progress->format[0] == 0) || progress->skip_progress)
- return;
- printf(progress->format, val, progress->max);
- fputs(progress->backup, stdout);
-}
-
-static void progress_close(struct progress_struct *progress)
-{
- if (progress->format[0] == 0)
- return;
- printf("%-28s\n", "done");
-}
-
-
-/*
- * Helper function which zeros out _num_ blocks starting at _blk_. In
- * case of an error, the details of the error is returned via _ret_blk_
- * and _ret_count_ if they are non-NULL pointers. Returns 0 on
- * success, and an error code on an error.
- *
- * As a special case, if the first argument is NULL, then it will
- * attempt to free the static zeroizing buffer. (This is to keep
- * programs that check for memory leaks happy.)
- */
-static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
- struct progress_struct *progress,
- blk_t *ret_blk, int *ret_count)
-{
- int j, count, next_update, next_update_incr;
- static char *buf;
- errcode_t retval;
-
- /* If fs is null, clean up the static buffer and return */
- if (!fs) {
- if (buf) {
- free(buf);
- buf = 0;
- }
- return 0;
- }
- /* Allocate the zeroizing buffer if necessary */
- if (!buf) {
- buf = xzalloc(fs->blocksize * STRIDE_LENGTH);
- }
- /* OK, do the write loop */
- next_update = 0;
- next_update_incr = num / 100;
- if (next_update_incr < 1)
- next_update_incr = 1;
- for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
- count = num - j;
- if (count > STRIDE_LENGTH)
- count = STRIDE_LENGTH;
- retval = io_channel_write_blk(fs->io, blk, count, buf);
- if (retval) {
- if (ret_count)
- *ret_count = count;
- if (ret_blk)
- *ret_blk = blk;
- return retval;
- }
- if (progress && j > next_update) {
- next_update += num / 100;
- progress_update(progress, blk);
- }
- }
- return 0;
-}
-
-static void write_inode_tables(ext2_filsys fs)
-{
- errcode_t retval;
- blk_t blk;
- dgrp_t i;
- int num;
- struct progress_struct progress;
-
- if (quiet)
- memset(&progress, 0, sizeof(progress));
- else
- progress_init(&progress, "Writing inode tables: ",
- fs->group_desc_count);
-
- for (i = 0; i < fs->group_desc_count; i++) {
- progress_update(&progress, i);
-
- blk = fs->group_desc[i].bg_inode_table;
- num = fs->inode_blocks_per_group;
-
- retval = zero_blocks(fs, blk, num, 0, &blk, &num);
- mke2fs_error_msg_and_die(retval,
- "write %d blocks in inode table starting at %d.",
- num, blk);
- if (sync_kludge) {
- if (sync_kludge == 1)
- sync();
- else if ((i % sync_kludge) == 0)
- sync();
- }
- }
- zero_blocks(0, 0, 0, 0, 0, 0);
- progress_close(&progress);
-}
-
-static void create_root_dir(ext2_filsys fs)
-{
- errcode_t retval;
- struct ext2_inode inode;
-
- retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
- mke2fs_error_msg_and_die(retval, "create root dir");
- if (geteuid()) {
- retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
- mke2fs_error_msg_and_die(retval, "read root inode");
- inode.i_uid = getuid();
- if (inode.i_uid)
- inode.i_gid = getgid();
- retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
- mke2fs_error_msg_and_die(retval, "set root inode ownership");
- }
-}
-
-static void create_lost_and_found(ext2_filsys fs)
-{
- errcode_t retval;
- ext2_ino_t ino;
- const char *name = "lost+found";
- int i = 1;
- char *msg = "create";
- int lpf_size = 0;
-
- fs->umask = 077;
- retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
- if (retval) {
- goto CREATE_LOST_AND_FOUND_ERROR;
- }
-
- retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
- if (retval) {
- msg = "lookup";
- goto CREATE_LOST_AND_FOUND_ERROR;
- }
-
- for (; i < EXT2_NDIR_BLOCKS; i++) {
- if ((lpf_size += fs->blocksize) >= 16*1024)
- break;
- retval = ext2fs_expand_dir(fs, ino);
- msg = "expand";
-CREATE_LOST_AND_FOUND_ERROR:
- mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
- }
-}
-
-static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
-{
- errcode_t retval;
-
- ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
- fs->group_desc[0].bg_free_inodes_count--;
- fs->super->s_free_inodes_count--;
- retval = ext2fs_update_bb_inode(fs, bb_list);
- mke2fs_error_msg_and_die(retval, "set bad block inode");
-}
-
-static void reserve_inodes(ext2_filsys fs)
-{
- ext2_ino_t i;
- int group;
-
- for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
- ext2fs_mark_inode_bitmap(fs->inode_map, i);
- group = ext2fs_group_of_ino(fs, i);
- fs->group_desc[group].bg_free_inodes_count--;
- fs->super->s_free_inodes_count--;
- }
- ext2fs_mark_ib_dirty(fs);
-}
-
-#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
-#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */
-#define BSD_LABEL_OFFSET 64
-
-static void zap_sector(ext2_filsys fs, int sect, int nsect)
-{
- char *buf;
- char *fmt = "could not %s %d";
- int retval;
- unsigned int *magic;
-
- buf = xmalloc(512*nsect);
-
- if (sect == 0) {
- /* Check for a BSD disklabel, and don't erase it if so */
- retval = io_channel_read_blk(fs->io, 0, -512, buf);
- if (retval)
- mke2fs_warning_msg(retval, fmt, "read block", 0);
- else {
- magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
- if ((*magic == BSD_DISKMAGIC) ||
- (*magic == BSD_MAGICDISK))
- return;
- }
- }
-
- memset(buf, 0, 512*nsect);
- io_channel_set_blksize(fs->io, 512);
- retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
- io_channel_set_blksize(fs->io, fs->blocksize);
- free(buf);
- mke2fs_warning_msg(retval, fmt, "erase sector", sect);
-}
-
-static void create_journal_dev(ext2_filsys fs)
-{
- struct progress_struct progress;
- errcode_t retval;
- char *buf;
- char *fmt = "%s journal superblock";
- blk_t blk;
- int count;
-
- retval = ext2fs_create_journal_superblock(fs,
- fs->super->s_blocks_count, 0, &buf);
- mke2fs_error_msg_and_die(retval, fmt, "init");
- if (quiet)
- memset(&progress, 0, sizeof(progress));
- else
- progress_init(&progress, "Zeroing journal device: ",
- fs->super->s_blocks_count);
-
- retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
- &progress, &blk, &count);
- mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
- blk, count);
- zero_blocks(0, 0, 0, 0, 0, 0);
-
- retval = io_channel_write_blk(fs->io,
- fs->super->s_first_data_block+1,
- 1, buf);
- mke2fs_error_msg_and_die(retval, fmt, "write");
- progress_close(&progress);
-}
-
-static void show_stats(ext2_filsys fs)
-{
- struct ext2_super_block *s = fs->super;
- char *os;
- blk_t group_block;
- dgrp_t i;
- int need, col_left;
-
- mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
- "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
- os = e2p_os2string(fs->super->s_creator_os);
- printf( "Filesystem label=%.*s\n"
- "OS type: %s\n"
- "Block size=%u (log=%u)\n"
- "Fragment size=%u (log=%u)\n"
- "%u inodes, %u blocks\n"
- "%u blocks (%2.2f%%) reserved for the super user\n"
- "First data block=%u\n",
- (int) sizeof(s->s_volume_name),
- s->s_volume_name,
- os,
- fs->blocksize, s->s_log_block_size,
- fs->fragsize, s->s_log_frag_size,
- s->s_inodes_count, s->s_blocks_count,
- s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
- s->s_first_data_block);
- free(os);
- if (s->s_reserved_gdt_blocks) {
- printf("Maximum filesystem blocks=%lu\n",
- (s->s_reserved_gdt_blocks + fs->desc_blocks) *
- (fs->blocksize / sizeof(struct ext2_group_desc)) *
- s->s_blocks_per_group);
- }
- printf( "%u block group%s\n"
- "%u blocks per group, %u fragments per group\n"
- "%u inodes per group\n",
- fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
- s->s_blocks_per_group, s->s_frags_per_group,
- s->s_inodes_per_group);
- if (fs->group_desc_count == 1) {
- puts("");
- return;
- }
-
- printf("Superblock backups stored on blocks: ");
- group_block = s->s_first_data_block;
- col_left = 0;
- for (i = 1; i < fs->group_desc_count; i++) {
- group_block += s->s_blocks_per_group;
- if (!ext2fs_bg_has_super(fs, i))
- continue;
- if (i != 1)
- printf(", ");
- need = int_log10(group_block) + 2;
- if (need > col_left) {
- printf("\n\t");
- col_left = 72;
- }
- col_left -= need;
- printf("%u", group_block);
- }
- puts("\n");
-}
-
-/*
- * Set the S_CREATOR_OS field. Return true if OS is known,
- * otherwise, 0.
- */
-static int set_os(struct ext2_super_block *sb, char *os)
-{
- if (isdigit (*os)) {
- sb->s_creator_os = atoi(os);
- return 1;
- }
-
- if((sb->s_creator_os = e2p_string2os(os)) >= 0) {
- return 1;
- } else if (!strcasecmp("GNU", os)) {
- sb->s_creator_os = EXT2_OS_HURD;
- return 1;
- }
- return 0;
-}
-
-static void parse_extended_opts(struct ext2_super_block *sb_param,
- const char *opts)
-{
- char *buf, *token, *next, *p, *arg;
- int r_usage = 0;
-
- buf = xstrdup(opts);
- for (token = buf; token && *token; token = next) {
- p = strchr(token, ',');
- next = 0;
- if (p) {
- *p = 0;
- next = p+1;
- }
- arg = strchr(token, '=');
- if (arg) {
- *arg = 0;
- arg++;
- }
- if (strcmp(token, "stride") == 0) {
- if (!arg) {
- r_usage++;
- continue;
- }
- fs_stride = strtoul(arg, &p, 0);
- if (*p || (fs_stride == 0)) {
- bb_error_msg("Invalid stride parameter: %s", arg);
- r_usage++;
- continue;
- }
- } else if (!strcmp(token, "resize")) {
- unsigned long resize, bpg, rsv_groups;
- unsigned long group_desc_count, desc_blocks;
- unsigned int gdpb, blocksize;
- int rsv_gdb;
-
- if (!arg) {
- r_usage++;
- continue;
- }
-
- resize = parse_num_blocks(arg,
- sb_param->s_log_block_size);
-
- if (resize == 0) {
- bb_error_msg("Invalid resize parameter: %s", arg);
- r_usage++;
- continue;
- }
- if (resize <= sb_param->s_blocks_count) {
- bb_error_msg("The resize maximum must be greater "
- "than the filesystem size");
- r_usage++;
- continue;
- }
-
- blocksize = EXT2_BLOCK_SIZE(sb_param);
- bpg = sb_param->s_blocks_per_group;
- if (!bpg)
- bpg = blocksize * 8;
- gdpb = blocksize / sizeof(struct ext2_group_desc);
- group_desc_count = (sb_param->s_blocks_count +
- bpg - 1) / bpg;
- desc_blocks = (group_desc_count +
- gdpb - 1) / gdpb;
- rsv_groups = (resize + bpg - 1) / bpg;
- rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
- desc_blocks;
- if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
- rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
-
- if (rsv_gdb > 0) {
- sb_param->s_feature_compat |=
- EXT2_FEATURE_COMPAT_RESIZE_INODE;
-
- sb_param->s_reserved_gdt_blocks = rsv_gdb;
- }
- } else
- r_usage++;
- }
- if (r_usage) {
- bb_error_msg_and_die(
- "\nBad options specified.\n\n"
- "Extended options are separated by commas, "
- "and may take an argument which\n"
- "\tis set off by an equals ('=') sign.\n\n"
- "Valid extended options are:\n"
- "\tstride=<stride length in blocks>\n"
- "\tresize=<resize maximum size in blocks>\n");
- }
-}
-
-static __u32 ok_features[3] = {
- EXT3_FEATURE_COMPAT_HAS_JOURNAL |
- EXT2_FEATURE_COMPAT_RESIZE_INODE |
- EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */
- EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
- EXT2_FEATURE_INCOMPAT_META_BG,
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */
-};
-
-static int PRS(int argc, char *argv[])
-{
- int c;
- int size;
- char * tmp;
- int blocksize = 0;
- int inode_ratio = 0;
- int inode_size = 0;
- int reserved_ratio = 5;
- int sector_size = 0;
- int show_version_only = 0;
- ext2_ino_t num_inodes = 0;
- errcode_t retval;
- char * extended_opts = 0;
- const char * fs_type = 0;
- blk_t dev_size;
- long sysval;
-
- /* Update our PATH to include /sbin */
- e2fs_set_sbin_path();
-
- tmp = getenv("MKE2FS_SYNC");
- if (tmp)
- sync_kludge = atoi(tmp);
-
- /* Determine the system page size if possible */
-#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
-#define _SC_PAGESIZE _SC_PAGE_SIZE
-#endif
-#ifdef _SC_PAGESIZE
- sysval = sysconf(_SC_PAGESIZE);
- if (sysval > 0)
- sys_page_size = sysval;
-#endif /* _SC_PAGESIZE */
-
- setbuf(stdout, NULL);
- setbuf(stderr, NULL);
- memset(¶m, 0, sizeof(struct ext2_super_block));
- param.s_rev_level = 1; /* Create revision 1 filesystems now */
- param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
- param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
-
-#ifdef __linux__
- linux_version_code = get_linux_version_code();
- if (linux_version_code && linux_version_code < KERNEL_VERSION(2,2,0)) {
- param.s_rev_level = 0;
- param.s_feature_incompat = 0;
- param.s_feature_compat = 0;
- param.s_feature_ro_compat = 0;
- }
-#endif
-
- /* If called as mkfs.ext3, create a journal inode */
- if (last_char_is(applet_name, '3'))
- journal_size = -1;
-
- while ((c = getopt (argc, argv,
- "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
- switch (c) {
- case 'b':
- blocksize = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
- mke2fs_warning_msg((blocksize > 4096),
- "blocksize %d not usable on most systems",
- blocksize);
- param.s_log_block_size =
- int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
- break;
- case 'c': /* Check for bad blocks */
- case 't': /* deprecated */
- cflag++;
- break;
- case 'f':
- size = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
- param.s_log_frag_size =
- int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
- mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
- break;
- case 'g':
- param.s_blocks_per_group = xatou32(optarg);
- if ((param.s_blocks_per_group % 8) != 0) {
- bb_error_msg_and_die("blocks per group must be multiple of 8");
- }
- break;
- case 'i':
- /* Huh? is "* 1024" correct? */
- inode_ratio = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE * 1024);
- break;
- case 'J':
- parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
- break;
- case 'j':
- param.s_feature_compat |=
- EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- if (!journal_size)
- journal_size = -1;
- break;
- case 'l':
- bad_blocks_filename = optarg;
- break;
- case 'm':
- reserved_ratio = xatou_range(optarg, 0, 50);
- break;
- case 'n':
- noaction++;
- break;
- case 'o':
- creator_os = optarg;
- break;
- case 'r':
- param.s_rev_level = xatoi_u(optarg);
- if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
- param.s_feature_incompat = 0;
- param.s_feature_compat = 0;
- param.s_feature_ro_compat = 0;
- }
- break;
- case 's': /* deprecated */
- if (xatou(optarg))
- param.s_feature_ro_compat |=
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- else
- param.s_feature_ro_compat &=
- ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- break;
-#ifdef EXT2_DYNAMIC_REV
- case 'I':
- inode_size = xatoi_u(optarg);
- break;
-#endif
- case 'N':
- num_inodes = xatoi_u(optarg);
- break;
- case 'v':
- quiet = 0;
- break;
- case 'q':
- quiet = 1;
- break;
- case 'F':
- force = 1;
- break;
- case 'L':
- volume_label = optarg;
- break;
- case 'M':
- mount_dir = optarg;
- break;
- case 'O':
- if (!strcmp(optarg, "none")) {
- param.s_feature_compat = 0;
- param.s_feature_incompat = 0;
- param.s_feature_ro_compat = 0;
- break;
- }
- if (e2p_edit_feature(optarg,
- ¶m.s_feature_compat,
- ok_features)) {
- bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
- }
- break;
- case 'E':
- case 'R':
- extended_opts = optarg;
- break;
- case 'S':
- super_only = 1;
- break;
- case 'T':
- fs_type = optarg;
- break;
- case 'V':
- /* Print version number and exit */
- show_version_only = 1;
- quiet = 0;
- break;
- default:
- bb_show_usage();
- }
- }
- if ((optind == argc) /*&& !show_version_only*/)
- bb_show_usage();
- device_name = argv[optind++];
-
- mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
-
- if (show_version_only) {
- return 0;
- }
-
- /*
- * If there's no blocksize specified and there is a journal
- * device, use it to figure out the blocksize
- */
- if (blocksize <= 0 && journal_device) {
- ext2_filsys jfs;
- io_manager io_ptr;
-
-#ifdef CONFIG_TESTIO_DEBUG
- io_ptr = test_io_manager;
- test_io_backing_manager = unix_io_manager;
-#else
- io_ptr = unix_io_manager;
-#endif
- retval = ext2fs_open(journal_device,
- EXT2_FLAG_JOURNAL_DEV_OK, 0,
- 0, io_ptr, &jfs);
- mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
- if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
- bb_error_msg_and_die(
- "Journal dev blocksize (%d) smaller than "
- "minimum blocksize %d\n", jfs->blocksize,
- -blocksize);
- }
- blocksize = jfs->blocksize;
- param.s_log_block_size =
- int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
- ext2fs_close(jfs);
- }
-
- if (blocksize > sys_page_size) {
- mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
- blocksize, sys_page_size);
- if (!force) {
- proceed_question();
- }
- bb_error_msg("Forced to continue");
- }
- mke2fs_warning_msg(((blocksize > 4096) &&
- (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
- "some 2.4 kernels do not support "
- "blocksizes greater than 4096 using ext3.\n"
- "Use -b 4096 if this is an issue for you\n");
-
- if (optind < argc) {
- param.s_blocks_count = parse_num_blocks(argv[optind++],
- param.s_log_block_size);
- mke2fs_error_msg_and_die(!param.s_blocks_count, "invalid blocks count - %s", argv[optind - 1]);
- }
- if (optind < argc)
- bb_show_usage();
-
- if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- if (!fs_type)
- fs_type = "journal";
- reserved_ratio = 0;
- param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
- param.s_feature_compat = 0;
- param.s_feature_ro_compat = 0;
- }
- if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
- (param.s_feature_compat || param.s_feature_ro_compat ||
- param.s_feature_incompat))
- param.s_rev_level = 1; /* Create a revision 1 filesystem */
-
- check_plausibility(device_name , force);
- check_mount(device_name, force, "filesystem");
-
- param.s_log_frag_size = param.s_log_block_size;
-
- if (noaction && param.s_blocks_count) {
- dev_size = param.s_blocks_count;
- retval = 0;
- } else {
- retry:
- retval = ext2fs_get_device_size(device_name,
- EXT2_BLOCK_SIZE(¶m),
- &dev_size);
- if ((retval == EFBIG) &&
- (blocksize == 0) &&
- (param.s_log_block_size == 0)) {
- param.s_log_block_size = 2;
- blocksize = 4096;
- goto retry;
- }
- }
-
- mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
-
- if (!param.s_blocks_count) {
- if (retval == EXT2_ET_UNIMPLEMENTED) {
- mke2fs_error_msg_and_die(1,
- "determine device size; you "
- "must specify\nthe size of the "
- "filesystem");
- } else {
- if (dev_size == 0) {
- bb_error_msg_and_die(
- "Device size reported to be zero. "
- "Invalid partition specified, or\n\t"
- "partition table wasn't reread "
- "after running fdisk, due to\n\t"
- "a modified partition being busy "
- "and in use. You may need to reboot\n\t"
- "to re-read your partition table.\n"
- );
- }
- param.s_blocks_count = dev_size;
- if (sys_page_size > EXT2_BLOCK_SIZE(¶m))
- param.s_blocks_count &= ~((sys_page_size /
- EXT2_BLOCK_SIZE(¶m))-1);
- }
-
- } else if (!force && (param.s_blocks_count > dev_size)) {
- bb_error_msg("Filesystem larger than apparent device size");
- proceed_question();
- }
-
- /*
- * If the user asked for HAS_JOURNAL, then make sure a journal
- * gets created.
- */
- if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
- !journal_size)
- journal_size = -1;
-
- /* Set first meta blockgroup via an environment variable */
- /* (this is mostly for debugging purposes) */
- if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
- ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
- param.s_first_meta_bg = atoi(tmp);
-
- /* Get the hardware sector size, if available */
- retval = ext2fs_get_device_sectsize(device_name, §or_size);
- mke2fs_error_msg_and_die(retval, "determine hardware sector size");
-
- if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
- sector_size = atoi(tmp);
-
- set_fs_defaults(fs_type, ¶m, blocksize, sector_size, &inode_ratio);
- blocksize = EXT2_BLOCK_SIZE(¶m);
-
- if (extended_opts)
- parse_extended_opts(¶m, extended_opts);
-
- /* Since sparse_super is the default, we would only have a problem
- * here if it was explicitly disabled.
- */
- if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
- !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- bb_error_msg_and_die("reserved online resize blocks not supported "
- "on non-sparse filesystem");
- }
-
- if (param.s_blocks_per_group) {
- if (param.s_blocks_per_group < 256 ||
- param.s_blocks_per_group > 8 * (unsigned) blocksize) {
- bb_error_msg_and_die("blocks per group count out of range");
- }
- }
-
- if (!force && param.s_blocks_count >= (1 << 31)) {
- bb_error_msg_and_die("Filesystem too large. No more than 2**31-1 blocks\n"
- "\t (8TB using a blocksize of 4k) are currently supported.");
- }
-
- if (inode_size) {
- if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
- inode_size > EXT2_BLOCK_SIZE(¶m) ||
- inode_size & (inode_size - 1)) {
- bb_error_msg_and_die("invalid inode size %d (min %d/max %d)",
- inode_size, EXT2_GOOD_OLD_INODE_SIZE,
- blocksize);
- }
- mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
- "%d-byte inodes not usable on most systems",
- inode_size);
- param.s_inode_size = inode_size;
- }
-
- /*
- * Calculate number of inodes based on the inode ratio
- */
- param.s_inodes_count = num_inodes ? num_inodes :
- ((__u64) param.s_blocks_count * blocksize)
- / inode_ratio;
-
- /*
- * Calculate number of blocks to reserve
- */
- param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
- return 1;
-}
-
-static void mke2fs_clean_up(void)
-{
- if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
-}
-
-int mke2fs_main (int argc, char *argv[])
-{
- errcode_t retval;
- ext2_filsys fs;
- badblocks_list bb_list = 0;
- unsigned int i;
- int val;
- io_manager io_ptr;
-
- if (ENABLE_FEATURE_CLEAN_UP)
- atexit(mke2fs_clean_up);
- if(!PRS(argc, argv))
- return 0;
-
-#ifdef CONFIG_TESTIO_DEBUG
- io_ptr = test_io_manager;
- test_io_backing_manager = unix_io_manager;
-#else
- io_ptr = unix_io_manager;
-#endif
-
- /*
- * Initialize the superblock....
- */
- retval = ext2fs_initialize(device_name, 0, ¶m,
- io_ptr, &fs);
- mke2fs_error_msg_and_die(retval, "set up superblock");
-
- /*
- * Wipe out the old on-disk superblock
- */
- if (!noaction)
- zap_sector(fs, 2, 6);
-
- /*
- * Generate a UUID for it...
- */
- uuid_generate(fs->super->s_uuid);
-
- /*
- * Initialize the directory index variables
- */
- fs->super->s_def_hash_version = EXT2_HASH_TEA;
- uuid_generate((unsigned char *) fs->super->s_hash_seed);
-
- /*
- * Add "jitter" to the superblock's check interval so that we
- * don't check all the filesystems at the same time. We use a
- * kludgy hack of using the UUID to derive a random jitter value.
- */
- for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
- val += fs->super->s_uuid[i];
- fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
-
- /*
- * Override the creator OS, if applicable
- */
- if (creator_os && !set_os(fs->super, creator_os)) {
- bb_error_msg_and_die("unknown os - %s", creator_os);
- }
-
- /*
- * For the Hurd, we will turn off filetype since it doesn't
- * support it.
- */
- if (fs->super->s_creator_os == EXT2_OS_HURD)
- fs->super->s_feature_incompat &=
- ~EXT2_FEATURE_INCOMPAT_FILETYPE;
-
- /*
- * Set the volume label...
- */
- if (volume_label) {
- snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
- }
-
- /*
- * Set the last mount directory
- */
- if (mount_dir) {
- snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
- }
-
- if (!quiet || noaction)
- show_stats(fs);
-
- if (noaction)
- return 0;
-
- if (fs->super->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
- create_journal_dev(fs);
- return (ext2fs_close(fs) ? 1 : 0);
- }
-
- if (bad_blocks_filename)
- read_bb_file(fs, &bb_list, bad_blocks_filename);
- if (cflag)
- test_disk(fs, &bb_list);
-
- handle_bad_blocks(fs, bb_list);
- fs->stride = fs_stride;
- retval = ext2fs_allocate_tables(fs);
- mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
- if (super_only) {
- fs->super->s_state |= EXT2_ERROR_FS;
- fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
- } else {
- /* rsv must be a power of two (64kB is MD RAID sb alignment) */
- unsigned int rsv = 65536 / fs->blocksize;
- unsigned long blocks = fs->super->s_blocks_count;
- unsigned long start;
- blk_t ret_blk;
-
-#ifdef ZAP_BOOTBLOCK
- zap_sector(fs, 0, 2);
-#endif
-
- /*
- * Wipe out any old MD RAID (or other) metadata at the end
- * of the device. This will also verify that the device is
- * as large as we think. Be careful with very small devices.
- */
- start = (blocks & ~(rsv - 1));
- if (start > rsv)
- start -= rsv;
- if (start > 0)
- retval = zero_blocks(fs, start, blocks - start,
- NULL, &ret_blk, NULL);
-
- mke2fs_warning_msg(retval, "cannot zero block %u at end of filesystem", ret_blk);
- write_inode_tables(fs);
- create_root_dir(fs);
- create_lost_and_found(fs);
- reserve_inodes(fs);
- create_bad_block_inode(fs, bb_list);
- if (fs->super->s_feature_compat &
- EXT2_FEATURE_COMPAT_RESIZE_INODE) {
- retval = ext2fs_create_resize_inode(fs);
- mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
- }
- }
-
- if (journal_device) {
- make_journal_device(journal_device, fs, quiet, force);
- } else if (journal_size) {
- make_journal_blocks(fs, journal_size, journal_flags, quiet);
- }
-
- mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
- retval = ext2fs_flush(fs);
- mke2fs_warning_msg(retval, "had trouble writing out superblocks");
- mke2fs_verbose_done();
- if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
- print_check_message(fs);
- val = ext2fs_close(fs);
- return (retval || val) ? 1 : 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * tune2fs.c - Change the file system parameters on an ext2 file system
- *
- * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
- * Laboratoire MASI, Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-/*
- * History:
- * 93/06/01 - Creation
- * 93/10/31 - Added the -c option to change the maximal mount counts
- * 93/12/14 - Added -l flag to list contents of superblock
- * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
- * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
- * 93/12/29 - Added the -e option to change errors behavior
- * 94/02/27 - Ported to use the ext2fs library
- * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
- */
-
-#include <sys/types.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <getopt.h>
-
-#include "e2fsbb.h"
-#include "ext2fs/ext2_fs.h"
-#include "ext2fs/ext2fs.h"
-#include "uuid/uuid.h"
-#include "e2p/e2p.h"
-#include "ext2fs/kernel-jbd.h"
-#include "util.h"
-#include "blkid/blkid.h"
-
-#include "busybox.h"
-
-static char * device_name = NULL;
-static char * new_label, *new_last_mounted, *new_UUID;
-static char * io_options;
-static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
-static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
-static time_t last_check_time;
-static int print_label;
-static int max_mount_count, mount_count, mount_flags;
-static unsigned long interval, reserved_blocks;
-static unsigned reserved_ratio;
-static unsigned long resgid, resuid;
-static unsigned short errors;
-static int open_flag;
-static char *features_cmd;
-static char *mntopts_cmd;
-
-static int journal_size, journal_flags;
-static char *journal_device = NULL;
-
-static const char *please_fsck = "Please run e2fsck on the filesystem\n";
-
-static __u32 ok_features[3] = {
- EXT3_FEATURE_COMPAT_HAS_JOURNAL | EXT2_FEATURE_COMPAT_DIR_INDEX,
- EXT2_FEATURE_INCOMPAT_FILETYPE,
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
-};
-
-/*
- * Remove an external journal from the filesystem
- */
-static void remove_journal_device(ext2_filsys fs)
-{
- char *journal_path;
- ext2_filsys jfs;
- char buf[1024];
- journal_superblock_t *jsb;
- int i, nr_users;
- errcode_t retval;
- int commit_remove_journal = 0;
- io_manager io_ptr;
-
- if (f_flag)
- commit_remove_journal = 1; /* force removal even if error */
-
- uuid_unparse(fs->super->s_journal_uuid, buf);
- journal_path = blkid_get_devname(NULL, "UUID", buf);
-
- if (!journal_path) {
- journal_path =
- ext2fs_find_block_device(fs->super->s_journal_dev);
- if (!journal_path)
- return;
- }
-
- io_ptr = unix_io_manager;
- retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
- EXT2_FLAG_JOURNAL_DEV_OK, 0,
- fs->blocksize, io_ptr, &jfs);
- if (retval) {
- bb_error_msg("Failed to open external journal");
- goto no_valid_journal;
- }
- if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
- bb_error_msg("%s is not a journal device", journal_path);
- goto no_valid_journal;
- }
-
- /* Get the journal superblock */
- if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
- bb_error_msg("Failed to read journal superblock");
- goto no_valid_journal;
- }
-
- jsb = (journal_superblock_t *) buf;
- if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
- (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
- bb_error_msg("Journal superblock not found!");
- goto no_valid_journal;
- }
-
- /* Find the filesystem UUID */
- nr_users = ntohl(jsb->s_nr_users);
- for (i=0; i < nr_users; i++) {
- if (memcmp(fs->super->s_uuid,
- &jsb->s_users[i*16], 16) == 0)
- break;
- }
- if (i >= nr_users) {
- bb_error_msg("Filesystem's UUID not found on journal device");
- commit_remove_journal = 1;
- goto no_valid_journal;
- }
- nr_users--;
- for (i=0; i < nr_users; i++)
- memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
- jsb->s_nr_users = htonl(nr_users);
-
- /* Write back the journal superblock */
- if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
- bb_error_msg("Failed to write journal superblock");
- goto no_valid_journal;
- }
-
- commit_remove_journal = 1;
-
-no_valid_journal:
- if (commit_remove_journal == 0)
- bb_error_msg_and_die("Journal NOT removed");
- fs->super->s_journal_dev = 0;
- uuid_clear(fs->super->s_journal_uuid);
- ext2fs_mark_super_dirty(fs);
- puts("Journal removed");
- free(journal_path);
-}
-
-/* Helper function for remove_journal_inode */
-static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
- int blockcnt EXT2FS_ATTR((unused)),
- void *private EXT2FS_ATTR((unused)))
-{
- blk_t block;
- int group;
-
- block = *blocknr;
- ext2fs_unmark_block_bitmap(fs->block_map,block);
- group = ext2fs_group_of_blk(fs, block);
- fs->group_desc[group].bg_free_blocks_count++;
- fs->super->s_free_blocks_count++;
- return 0;
-}
-
-/*
- * Remove the journal inode from the filesystem
- */
-static void remove_journal_inode(ext2_filsys fs)
-{
- struct ext2_inode inode;
- errcode_t retval;
- ino_t ino = fs->super->s_journal_inum;
- char *msg = "to read";
- char *s = "journal inode";
-
- retval = ext2fs_read_inode(fs, ino, &inode);
- if (retval)
- goto REMOVE_JOURNAL_INODE_ERROR;
- if (ino == EXT2_JOURNAL_INO) {
- retval = ext2fs_read_bitmaps(fs);
- if (retval) {
- msg = "to read bitmaps";
- s = "";
- goto REMOVE_JOURNAL_INODE_ERROR;
- }
- retval = ext2fs_block_iterate(fs, ino, 0, NULL,
- release_blocks_proc, NULL);
- if (retval) {
- msg = "clearing";
- goto REMOVE_JOURNAL_INODE_ERROR;
- }
- memset(&inode, 0, sizeof(inode));
- ext2fs_mark_bb_dirty(fs);
- fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
- } else
- inode.i_flags &= ~EXT2_IMMUTABLE_FL;
- retval = ext2fs_write_inode(fs, ino, &inode);
- if (retval) {
- msg = "writing";
-REMOVE_JOURNAL_INODE_ERROR:
- bb_error_msg_and_die("Failed %s %s", msg, s);
- }
- fs->super->s_journal_inum = 0;
- ext2fs_mark_super_dirty(fs);
-}
-
-/*
- * Update the default mount options
- */
-static void update_mntopts(ext2_filsys fs, char *mntopts)
-{
- struct ext2_super_block *sb= fs->super;
-
- if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0))
- bb_error_msg_and_die("Invalid mount option set: %s", mntopts);
- ext2fs_mark_super_dirty(fs);
-}
-
-/*
- * Update the feature set as provided by the user.
- */
-static void update_feature_set(ext2_filsys fs, char *features)
-{
- int sparse, old_sparse, filetype, old_filetype;
- int journal, old_journal, dxdir, old_dxdir;
- struct ext2_super_block *sb= fs->super;
- __u32 old_compat, old_incompat, old_ro_compat;
-
- old_compat = sb->s_feature_compat;
- old_ro_compat = sb->s_feature_ro_compat;
- old_incompat = sb->s_feature_incompat;
-
- old_sparse = sb->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- old_filetype = sb->s_feature_incompat &
- EXT2_FEATURE_INCOMPAT_FILETYPE;
- old_journal = sb->s_feature_compat &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- old_dxdir = sb->s_feature_compat &
- EXT2_FEATURE_COMPAT_DIR_INDEX;
- if (e2p_edit_feature(features, &sb->s_feature_compat, ok_features))
- bb_error_msg_and_die("Invalid filesystem option set: %s", features);
- sparse = sb->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- filetype = sb->s_feature_incompat &
- EXT2_FEATURE_INCOMPAT_FILETYPE;
- journal = sb->s_feature_compat &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- dxdir = sb->s_feature_compat &
- EXT2_FEATURE_COMPAT_DIR_INDEX;
- if (old_journal && !journal) {
- if ((mount_flags & EXT2_MF_MOUNTED) &&
- !(mount_flags & EXT2_MF_READONLY)) {
- bb_error_msg_and_die(
- "The has_journal flag may only be "
- "cleared when the filesystem is\n"
- "unmounted or mounted "
- "read-only");
- }
- if (sb->s_feature_incompat &
- EXT3_FEATURE_INCOMPAT_RECOVER) {
- bb_error_msg_and_die(
- "The needs_recovery flag is set. "
- "%s before clearing the has_journal flag.",
- please_fsck);
- }
- if (sb->s_journal_inum) {
- remove_journal_inode(fs);
- }
- if (sb->s_journal_dev) {
- remove_journal_device(fs);
- }
- }
- if (journal && !old_journal) {
- /*
- * If adding a journal flag, let the create journal
- * code below handle creating setting the flag and
- * creating the journal. We supply a default size if
- * necessary.
- */
- if (!journal_size)
- journal_size = -1;
- sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- }
- if (dxdir && !old_dxdir) {
- if (!sb->s_def_hash_version)
- sb->s_def_hash_version = EXT2_HASH_TEA;
- if (uuid_is_null((unsigned char *) sb->s_hash_seed))
- uuid_generate((unsigned char *) sb->s_hash_seed);
- }
-
- if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
- (sb->s_feature_compat || sb->s_feature_ro_compat ||
- sb->s_feature_incompat))
- ext2fs_update_dynamic_rev(fs);
- if ((sparse != old_sparse) ||
- (filetype != old_filetype)) {
- sb->s_state &= ~EXT2_VALID_FS;
- printf("\n%s\n", please_fsck);
- }
- if ((old_compat != sb->s_feature_compat) ||
- (old_ro_compat != sb->s_feature_ro_compat) ||
- (old_incompat != sb->s_feature_incompat))
- ext2fs_mark_super_dirty(fs);
-}
-
-/*
- * Add a journal to the filesystem.
- */
-static void add_journal(ext2_filsys fs)
-{
- if (fs->super->s_feature_compat &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
- bb_error_msg_and_die("The filesystem already has a journal");
- }
- if (journal_device) {
- make_journal_device(journal_device, fs, 0, 0);
- } else if (journal_size) {
- make_journal_blocks(fs, journal_size, journal_flags, 0);
- /*
- * If the filesystem wasn't mounted, we need to force
- * the block group descriptors out.
- */
- if ((mount_flags & EXT2_MF_MOUNTED) == 0)
- fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
- }
- print_check_message(fs);
- return;
-}
-
-/*
- * Busybox stuff
- */
-static char * x_blkid_get_devname(const char *token)
-{
- char * dev_name;
-
- if (!(dev_name = blkid_get_devname(NULL, token, NULL)))
- bb_error_msg_and_die("Unable to resolve '%s'", token);
- return dev_name;
-}
-
-#ifdef CONFIG_E2LABEL
-static void parse_e2label_options(int argc, char ** argv)
-{
- if ((argc < 2) || (argc > 3))
- bb_show_usage();
- io_options = strchr(argv[1], '?');
- if (io_options)
- *io_options++ = 0;
- device_name = x_blkid_get_devname(argv[1]);
- if (argc == 3) {
- open_flag = EXT2_FLAG_RW | EXT2_FLAG_JOURNAL_DEV_OK;
- L_flag = 1;
- new_label = argv[2];
- } else
- print_label++;
-}
-#else
-#define parse_e2label_options(x,y)
-#endif
-
-static time_t parse_time(char *str)
-{
- struct tm ts;
-
- if (strcmp(str, "now") == 0) {
- return time(0);
- }
- memset(&ts, 0, sizeof(ts));
-#ifdef HAVE_STRPTIME
- strptime(str, "%Y%m%d%H%M%S", &ts);
-#else
- sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
- &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
- ts.tm_year -= 1900;
- ts.tm_mon -= 1;
- if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
- ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
- ts.tm_min > 59 || ts.tm_sec > 61)
- ts.tm_mday = 0;
-#endif
- if (ts.tm_mday == 0) {
- bb_error_msg_and_die("Cannot parse date/time specifier: %s", str);
- }
- return mktime(&ts);
-}
-
-static void parse_tune2fs_options(int argc, char **argv)
-{
- int c;
- char * tmp;
-
- printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
- while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF)
- switch (c)
- {
- case 'c':
- max_mount_count = xatou_range(optarg, 0, 16000);
- if (max_mount_count == 0)
- max_mount_count = -1;
- c_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'C':
- mount_count = xatou_range(optarg, 0, 16000);
- C_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'e':
- if (strcmp (optarg, "continue") == 0)
- errors = EXT2_ERRORS_CONTINUE;
- else if (strcmp (optarg, "remount-ro") == 0)
- errors = EXT2_ERRORS_RO;
- else if (strcmp (optarg, "panic") == 0)
- errors = EXT2_ERRORS_PANIC;
- else {
- bb_error_msg_and_die("bad error behavior - %s", optarg);
- }
- e_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'f': /* Force */
- f_flag = 1;
- break;
- case 'g':
- resgid = bb_strtoul(optarg, NULL, 10);
- if (errno)
- resgid = bb_xgetgrnam(optarg);
- g_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'i':
- interval = strtoul(optarg, &tmp, 0);
- switch (*tmp) {
- case 's':
- tmp++;
- break;
- case '\0':
- case 'd':
- case 'D': /* days */
- interval *= 86400;
- if (*tmp != '\0')
- tmp++;
- break;
- case 'm':
- case 'M': /* months! */
- interval *= 86400 * 30;
- tmp++;
- break;
- case 'w':
- case 'W': /* weeks */
- interval *= 86400 * 7;
- tmp++;
- break;
- }
- if (*tmp || interval > (365 * 86400)) {
- bb_error_msg_and_die("bad interval - %s", optarg);
- }
- i_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'j':
- if (!journal_size)
- journal_size = -1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'J':
- parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
- open_flag = EXT2_FLAG_RW;
- break;
- case 'l':
- l_flag = 1;
- break;
- case 'L':
- new_label = optarg;
- L_flag = 1;
- open_flag = EXT2_FLAG_RW |
- EXT2_FLAG_JOURNAL_DEV_OK;
- break;
- case 'm':
- reserved_ratio = xatou_range(optarg, 0, 50);
- m_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'M':
- new_last_mounted = optarg;
- M_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'o':
- if (mntopts_cmd) {
- bb_error_msg_and_die("-o may only be specified once");
- }
- mntopts_cmd = optarg;
- open_flag = EXT2_FLAG_RW;
- break;
-
- case 'O':
- if (features_cmd) {
- bb_error_msg_and_die("-O may only be specified once");
- }
- features_cmd = optarg;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'r':
- reserved_blocks = xatoul(optarg);
- r_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 's':
- s_flag = atoi(optarg);
- open_flag = EXT2_FLAG_RW;
- break;
- case 'T':
- T_flag = 1;
- last_check_time = parse_time(optarg);
- open_flag = EXT2_FLAG_RW;
- break;
- case 'u':
- resuid = bb_strtoul(optarg, NULL, 10);
- if (errno)
- resuid = bb_xgetpwnam(optarg);
- u_flag = 1;
- open_flag = EXT2_FLAG_RW;
- break;
- case 'U':
- new_UUID = optarg;
- U_flag = 1;
- open_flag = EXT2_FLAG_RW |
- EXT2_FLAG_JOURNAL_DEV_OK;
- break;
- default:
- bb_show_usage();
- }
- if (optind < argc - 1 || optind == argc)
- bb_show_usage();
- if (!open_flag && !l_flag)
- bb_show_usage();
- io_options = strchr(argv[optind], '?');
- if (io_options)
- *io_options++ = 0;
- device_name = x_blkid_get_devname(argv[optind]);
-}
-
-#ifdef CONFIG_FINDFS
-static ATTRIBUTE_NORETURN void do_findfs(int argc, char **argv)
-{
- if ((argc != 2) ||
- (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5)))
- bb_show_usage();
- device_name = x_blkid_get_devname(argv[1]);
- puts(device_name);
- exit(0);
-}
-#else
-#define do_findfs(x, y)
-#endif
-
-static void tune2fs_clean_up(void)
-{
- if (ENABLE_FEATURE_CLEAN_UP && device_name) free(device_name);
- if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
-}
-
-int tune2fs_main(int argc, char **argv)
-{
- errcode_t retval;
- ext2_filsys fs;
- struct ext2_super_block *sb;
- io_manager io_ptr;
-
- if (ENABLE_FEATURE_CLEAN_UP)
- atexit(tune2fs_clean_up);
-
- if (ENABLE_FINDFS && (applet_name[0] == 'f')) /* findfs */
- do_findfs(argc, argv); /* no return */
- else if (ENABLE_E2LABEL && (applet_name[0] == 'e')) /* e2label */
- parse_e2label_options(argc, argv);
- else
- parse_tune2fs_options(argc, argv); /* tune2fs */
-
- io_ptr = unix_io_manager;
- retval = ext2fs_open2(device_name, io_options, open_flag,
- 0, 0, io_ptr, &fs);
- if (retval)
- bb_error_msg_and_die("No valid superblock on %s", device_name);
- sb = fs->super;
- if (print_label) {
- /* For e2label emulation */
- printf("%.*s\n", (int) sizeof(sb->s_volume_name),
- sb->s_volume_name);
- return 0;
- }
- retval = ext2fs_check_if_mounted(device_name, &mount_flags);
- if (retval)
- bb_error_msg_and_die("cannot determine if %s is mounted", device_name);
- /* Normally we only need to write out the superblock */
- fs->flags |= EXT2_FLAG_SUPER_ONLY;
-
- if (c_flag) {
- sb->s_max_mnt_count = max_mount_count;
- ext2fs_mark_super_dirty(fs);
- printf("Setting maximal mount count to %d\n", max_mount_count);
- }
- if (C_flag) {
- sb->s_mnt_count = mount_count;
- ext2fs_mark_super_dirty(fs);
- printf("Setting current mount count to %d\n", mount_count);
- }
- if (e_flag) {
- sb->s_errors = errors;
- ext2fs_mark_super_dirty(fs);
- printf("Setting error behavior to %d\n", errors);
- }
- if (g_flag) {
- sb->s_def_resgid = resgid;
- ext2fs_mark_super_dirty(fs);
- printf("Setting reserved blocks gid to %lu\n", resgid);
- }
- if (i_flag) {
- sb->s_checkinterval = interval;
- ext2fs_mark_super_dirty(fs);
- printf("Setting interval between check %lu seconds\n", interval);
- }
- if (m_flag) {
- sb->s_r_blocks_count = (sb->s_blocks_count / 100)
- * reserved_ratio;
- ext2fs_mark_super_dirty(fs);
- printf("Setting reserved blocks percentage to %u (%u blocks)\n",
- reserved_ratio, sb->s_r_blocks_count);
- }
- if (r_flag) {
- if (reserved_blocks >= sb->s_blocks_count/2)
- bb_error_msg_and_die("reserved blocks count is too big (%lu)", reserved_blocks);
- sb->s_r_blocks_count = reserved_blocks;
- ext2fs_mark_super_dirty(fs);
- printf("Setting reserved blocks count to %lu\n", reserved_blocks);
- }
- if (s_flag == 1) {
- if (sb->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
- bb_error_msg("\nThe filesystem already has sparse superblocks");
- else {
- sb->s_feature_ro_compat |=
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- sb->s_state &= ~EXT2_VALID_FS;
- ext2fs_mark_super_dirty(fs);
- printf("\nSparse superblock flag set. %s", please_fsck);
- }
- }
- if (s_flag == 0) {
- if (!(sb->s_feature_ro_compat &
- EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
- bb_error_msg("\nThe filesystem already has sparse superblocks disabled");
- else {
- sb->s_feature_ro_compat &=
- ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
- sb->s_state &= ~EXT2_VALID_FS;
- fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
- ext2fs_mark_super_dirty(fs);
- printf("\nSparse superblock flag cleared. %s", please_fsck);
- }
- }
- if (T_flag) {
- sb->s_lastcheck = last_check_time;
- ext2fs_mark_super_dirty(fs);
- printf("Setting time filesystem last checked to %s\n",
- ctime(&last_check_time));
- }
- if (u_flag) {
- sb->s_def_resuid = resuid;
- ext2fs_mark_super_dirty(fs);
- printf("Setting reserved blocks uid to %lu\n", resuid);
- }
- if (L_flag) {
- if (strlen(new_label) > sizeof(sb->s_volume_name))
- bb_error_msg("Warning: label too long, truncating");
- memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
- safe_strncpy(sb->s_volume_name, new_label,
- sizeof(sb->s_volume_name));
- ext2fs_mark_super_dirty(fs);
- }
- if (M_flag) {
- memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
- safe_strncpy(sb->s_last_mounted, new_last_mounted,
- sizeof(sb->s_last_mounted));
- ext2fs_mark_super_dirty(fs);
- }
- if (mntopts_cmd)
- update_mntopts(fs, mntopts_cmd);
- if (features_cmd)
- update_feature_set(fs, features_cmd);
- if (journal_size || journal_device)
- add_journal(fs);
-
- if (U_flag) {
- if ((strcasecmp(new_UUID, "null") == 0) ||
- (strcasecmp(new_UUID, "clear") == 0)) {
- uuid_clear(sb->s_uuid);
- } else if (strcasecmp(new_UUID, "time") == 0) {
- uuid_generate_time(sb->s_uuid);
- } else if (strcasecmp(new_UUID, "random") == 0) {
- uuid_generate(sb->s_uuid);
- } else if (uuid_parse(new_UUID, sb->s_uuid)) {
- bb_error_msg_and_die("Invalid UUID format");
- }
- ext2fs_mark_super_dirty(fs);
- }
-
- if (l_flag)
- list_super (sb);
- return (ext2fs_close (fs) ? 1 : 0);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * util.c --- helper functions used by tune2fs and mke2fs
- *
- * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <linux/major.h>
-#include <sys/stat.h>
-
-#include "e2fsbb.h"
-#include "e2p/e2p.h"
-#include "ext2fs/ext2_fs.h"
-#include "ext2fs/ext2fs.h"
-#include "blkid/blkid.h"
-#include "util.h"
-
-void proceed_question(void)
-{
- fputs("Proceed anyway? (y,n) ", stdout);
- if (bb_ask_confirmation() == 0)
- exit(1);
-}
-
-void check_plausibility(const char *device, int force)
-{
- int val;
- struct stat s;
- val = stat(device, &s);
- if (force)
- return;
- if(val == -1)
- bb_perror_msg_and_die("cannot stat %s", device);
- if (!S_ISBLK(s.st_mode)) {
- printf("%s is not a block special device.\n", device);
- proceed_question();
- return;
- }
-
-#ifdef HAVE_LINUX_MAJOR_H
-#ifndef MAJOR
-#define MAJOR(dev) ((dev)>>8)
-#define MINOR(dev) ((dev) & 0xff)
-#endif
-#ifndef SCSI_BLK_MAJOR
-#ifdef SCSI_DISK0_MAJOR
-#ifdef SCSI_DISK8_MAJOR
-#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
- ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
- ((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
-#else
-#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
- ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
-#endif /* defined(SCSI_DISK8_MAJOR) */
-#define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
-#else
-#define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
-#endif /* defined(SCSI_DISK0_MAJOR) */
-#endif /* defined(SCSI_BLK_MAJOR) */
- if (((MAJOR(s.st_rdev) == HD_MAJOR &&
- MINOR(s.st_rdev)%64 == 0) ||
- (SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
- MINOR(s.st_rdev)%16 == 0))) {
- printf("%s is entire device, not just one partition!\n", device);
- proceed_question();
- }
-#endif
-}
-
-void check_mount(const char *device, int force, const char *type)
-{
- errcode_t retval;
- int mount_flags;
-
- retval = ext2fs_check_if_mounted(device, &mount_flags);
- if (retval) {
- bb_error_msg("cannot determine if %s is mounted", device);
- return;
- }
- if (mount_flags & EXT2_MF_MOUNTED) {
- bb_error_msg("%s is mounted !", device);
-force_check:
- if (force)
- bb_error_msg("badblocks forced anyways");
- else
- bb_error_msg_and_die("it's not safe to run badblocks!");
- }
-
- if (mount_flags & EXT2_MF_BUSY) {
- bb_error_msg("%s is apparently in use by the system", device);
- goto force_check;
- }
-
-}
-
-void parse_journal_opts(char **journal_device, int *journal_flags,
- int *journal_size, const char *opts)
-{
- char *buf, *token, *next, *p, *arg;
- int journal_usage = 0;
- buf = xstrdup(opts);
- for (token = buf; token && *token; token = next) {
- p = strchr(token, ',');
- next = 0;
- if (p) {
- *p = 0;
- next = p+1;
- }
- arg = strchr(token, '=');
- if (arg) {
- *arg = 0;
- arg++;
- }
- if (strcmp(token, "device") == 0) {
- *journal_device = blkid_get_devname(NULL, arg, NULL);
- if (!journal_device) {
- journal_usage++;
- continue;
- }
- } else if (strcmp(token, "size") == 0) {
- if (!arg) {
- journal_usage++;
- continue;
- }
- (*journal_size) = strtoul(arg, &p, 0);
- if (*p)
- journal_usage++;
- } else if (strcmp(token, "v1_superblock") == 0) {
- (*journal_flags) |= EXT2_MKJOURNAL_V1_SUPER;
- continue;
- } else
- journal_usage++;
- }
- if (journal_usage)
- bb_error_msg_and_die(
- "\nBad journal options specified.\n\n"
- "Journal options are separated by commas, "
- "and may take an argument which\n"
- "\tis set off by an equals ('=') sign.\n\n"
- "Valid journal options are:\n"
- "\tsize=<journal size in megabytes>\n"
- "\tdevice=<journal device>\n\n"
- "The journal size must be between "
- "1024 and 102400 filesystem blocks.\n\n");
-}
-
-/*
- * Determine the number of journal blocks to use, either via
- * user-specified # of megabytes, or via some intelligently selected
- * defaults.
- *
- * Find a reasonable journal file size (in blocks) given the number of blocks
- * in the filesystem. For very small filesystems, it is not reasonable to
- * have a journal that fills more than half of the filesystem.
- */
-int figure_journal_size(int size, ext2_filsys fs)
-{
- blk_t j_blocks;
-
- if (fs->super->s_blocks_count < 2048) {
- bb_error_msg("Filesystem too small for a journal");
- return 0;
- }
-
- if (size >= 0) {
- j_blocks = size * 1024 / (fs->blocksize / 1024);
- if (j_blocks < 1024 || j_blocks > 102400)
- bb_error_msg_and_die("\nThe requested journal "
- "size is %d blocks;\n it must be "
- "between 1024 and 102400 blocks; Aborting",
- j_blocks);
- if (j_blocks > fs->super->s_free_blocks_count)
- bb_error_msg_and_die("Journal size too big for filesystem");
- return j_blocks;
- }
-
- if (fs->super->s_blocks_count < 32768)
- j_blocks = 1024;
- else if (fs->super->s_blocks_count < 256*1024)
- j_blocks = 4096;
- else if (fs->super->s_blocks_count < 512*1024)
- j_blocks = 8192;
- else if (fs->super->s_blocks_count < 1024*1024)
- j_blocks = 16384;
- else
- j_blocks = 32768;
-
- return j_blocks;
-}
-
-void print_check_message(ext2_filsys fs)
-{
- printf("This filesystem will be automatically "
- "checked every %d mounts or\n"
- "%g days, whichever comes first. "
- "Use tune2fs -c or -i to override.\n",
- fs->super->s_max_mnt_count,
- (double)fs->super->s_checkinterval / (3600 * 24));
-}
-
-void make_journal_device(char *journal_device, ext2_filsys fs, int quiet, int force)
-{
- errcode_t retval;
- ext2_filsys jfs;
- io_manager io_ptr;
-
- check_plausibility(journal_device, force);
- check_mount(journal_device, force, "journal");
- io_ptr = unix_io_manager;
- retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
- EXT2_FLAG_JOURNAL_DEV_OK, 0,
- fs->blocksize, io_ptr, &jfs);
- if (retval)
- bb_error_msg_and_die("cannot journal device %s", journal_device);
- if(!quiet)
- printf("Adding journal to device %s: ", journal_device);
- fflush(stdout);
- retval = ext2fs_add_journal_device(fs, jfs);
- if(retval)
- bb_error_msg_and_die("\nFailed to add journal to device %s", journal_device);
- if(!quiet)
- puts("done");
- ext2fs_close(jfs);
-}
-
-void make_journal_blocks(ext2_filsys fs, int journal_size, int journal_flags, int quiet)
-{
- unsigned long journal_blocks;
- errcode_t retval;
-
- journal_blocks = figure_journal_size(journal_size, fs);
- if (!journal_blocks) {
- fs->super->s_feature_compat &=
- ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
- return;
- }
- if(!quiet)
- printf("Creating journal (%ld blocks): ", journal_blocks);
- fflush(stdout);
- retval = ext2fs_add_journal_inode(fs, journal_blocks,
- journal_flags);
- if(retval)
- bb_error_msg_and_die("cannot create journal");
- if(!quiet)
- puts("done");
-}
-
-char *e2fs_set_sbin_path(void)
-{
- char *oldpath = getenv("PATH");
- /* Update our PATH to include /sbin */
-#define PATH_SET "/sbin"
- if (oldpath)
- oldpath = xasprintf("%s:%s", PATH_SET, oldpath);
- else
- oldpath = PATH_SET;
- putenv (oldpath);
- return oldpath;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * util.h --- header file defining prototypes for helper functions
- * used by tune2fs and mke2fs
- *
- * Copyright 2000 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-extern void proceed_question(void);
-extern void check_plausibility(const char *device, int force);
-extern void parse_journal_opts(char **, int *, int *, const char *opts);
-extern void check_mount(const char *device, int force, const char *type);
-extern int figure_journal_size(int size, ext2_filsys fs);
-extern void print_check_message(ext2_filsys fs);
-extern void make_journal_device(char *journal_device, ext2_filsys fs, int quiet, int force);
-extern void make_journal_blocks(ext2_filsys fs, int journal_size, int journal_flags, int quiet);
-extern char *e2fs_set_sbin_path(void);
+++ /dev/null
-# Makefile for busybox
-#
-# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
-#
-# Licensed under the GPL v2, see the file LICENSE in this tarball.
-
-NEEDED-$(CONFIG_E2FSCK) = y
-NEEDED-$(CONFIG_FSCK) = y
-NEEDED-$(CONFIG_MKE2FS) = y
-NEEDED-$(CONFIG_TUNE2FS) = y
-
-lib-y:=
-lib-$(NEEDED-y) += compare.o gen_uuid.o pack.o parse.o unpack.o unparse.o \
- uuid_time.o
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * compare.c --- compare whether or not two UUID's are the same
- *
- * Returns 0 if the two UUID's are different, and 1 if they are the same.
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include "uuidP.h"
-#include <string.h>
-
-#define UUCMP(u1,u2) if (u1 != u2) return (u1 < u2) ? -1 : 1;
-
-int uuid_compare(const uuid_t uu1, const uuid_t uu2)
-{
- struct uuid uuid1, uuid2;
-
- uuid_unpack(uu1, &uuid1);
- uuid_unpack(uu2, &uuid2);
-
- UUCMP(uuid1.time_low, uuid2.time_low);
- UUCMP(uuid1.time_mid, uuid2.time_mid);
- UUCMP(uuid1.time_hi_and_version, uuid2.time_hi_and_version);
- UUCMP(uuid1.clock_seq, uuid2.clock_seq);
- return memcmp(uuid1.node, uuid2.node, 6);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * gen_uuid.c --- generate a DCE-compatible uuid
- *
- * Copyright (C) 1996, 1997, 1998, 1999 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/file.h>
-#include <sys/time.h>
-#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#include <sys/socket.h>
-#ifdef HAVE_SYS_SOCKIO_H
-#include <sys/sockio.h>
-#endif
-#ifdef HAVE_NET_IF_H
-#include <net/if.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_NET_IF_DL_H
-#include <net/if_dl.h>
-#endif
-
-#include "uuidP.h"
-
-#ifdef HAVE_SRANDOM
-#define srand(x) srandom(x)
-#define rand() random()
-#endif
-
-static int get_random_fd(void)
-{
- struct timeval tv;
- static int fd = -2;
- int i;
-
- if (fd == -2) {
- gettimeofday(&tv, 0);
- fd = open("/dev/urandom", O_RDONLY);
- if (fd == -1)
- fd = open("/dev/random", O_RDONLY | O_NONBLOCK);
- srand((getpid() << 16) ^ getuid() ^ tv.tv_sec ^ tv.tv_usec);
- }
- /* Crank the random number generator a few times */
- gettimeofday(&tv, 0);
- for (i = (tv.tv_sec ^ tv.tv_usec) & 0x1F; i > 0; i--)
- rand();
- return fd;
-}
-
-
-/*
- * Generate a series of random bytes. Use /dev/urandom if possible,
- * and if not, use srandom/random.
- */
-static void get_random_bytes(void *buf, int nbytes)
-{
- int i, n = nbytes, fd = get_random_fd();
- int lose_counter = 0;
- unsigned char *cp = (unsigned char *) buf;
-
- if (fd >= 0) {
- while (n > 0) {
- i = read(fd, cp, n);
- if (i <= 0) {
- if (lose_counter++ > 16)
- break;
- continue;
- }
- n -= i;
- cp += i;
- lose_counter = 0;
- }
- }
-
- /*
- * We do this all the time, but this is the only source of
- * randomness if /dev/random/urandom is out to lunch.
- */
- for (cp = buf, i = 0; i < nbytes; i++)
- *cp++ ^= (rand() >> 7) & 0xFF;
- return;
-}
-
-/*
- * Get the ethernet hardware address, if we can find it...
- */
-static int get_node_id(unsigned char *node_id)
-{
-#ifdef HAVE_NET_IF_H
- int sd;
- struct ifreq ifr, *ifrp;
- struct ifconf ifc;
- char buf[1024];
- int n, i;
- unsigned char *a;
-#ifdef HAVE_NET_IF_DL_H
- struct sockaddr_dl *sdlp;
-#endif
-
-/*
- * BSD 4.4 defines the size of an ifreq to be
- * max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
- * However, under earlier systems, sa_len isn't present, so the size is
- * just sizeof(struct ifreq)
- */
-#ifdef HAVE_SA_LEN
-#ifndef max
-#define max(a,b) ((a) > (b) ? (a) : (b))
-#endif
-#define ifreq_size(i) max(sizeof(struct ifreq),\
- sizeof((i).ifr_name)+(i).ifr_addr.sa_len)
-#else
-#define ifreq_size(i) sizeof(struct ifreq)
-#endif /* HAVE_SA_LEN*/
-
- sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
- if (sd < 0) {
- return -1;
- }
- memset(buf, 0, sizeof(buf));
- ifc.ifc_len = sizeof(buf);
- ifc.ifc_buf = buf;
- if (ioctl (sd, SIOCGIFCONF, (char *)&ifc) < 0) {
- close(sd);
- return -1;
- }
- n = ifc.ifc_len;
- for (i = 0; i < n; i+= ifreq_size(*ifrp) ) {
- ifrp = (struct ifreq *)((char *) ifc.ifc_buf+i);
- strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
-#ifdef SIOCGIFHWADDR
- if (ioctl(sd, SIOCGIFHWADDR, &ifr) < 0)
- continue;
- a = (unsigned char *) &ifr.ifr_hwaddr.sa_data;
-#else
-#ifdef SIOCGENADDR
- if (ioctl(sd, SIOCGENADDR, &ifr) < 0)
- continue;
- a = (unsigned char *) ifr.ifr_enaddr;
-#else
-#ifdef HAVE_NET_IF_DL_H
- sdlp = (struct sockaddr_dl *) &ifrp->ifr_addr;
- if ((sdlp->sdl_family != AF_LINK) || (sdlp->sdl_alen != 6))
- continue;
- a = (unsigned char *) &sdlp->sdl_data[sdlp->sdl_nlen];
-#else
- /*
- * XXX we don't have a way of getting the hardware
- * address
- */
- close(sd);
- return 0;
-#endif /* HAVE_NET_IF_DL_H */
-#endif /* SIOCGENADDR */
-#endif /* SIOCGIFHWADDR */
- if (!a[0] && !a[1] && !a[2] && !a[3] && !a[4] && !a[5])
- continue;
- if (node_id) {
- memcpy(node_id, a, 6);
- close(sd);
- return 1;
- }
- }
- close(sd);
-#endif
- return 0;
-}
-
-/* Assume that the gettimeofday() has microsecond granularity */
-#define MAX_ADJUSTMENT 10
-
-static int get_clock(uint32_t *clock_high, uint32_t *clock_low, uint16_t *ret_clock_seq)
-{
- static int adjustment = 0;
- static struct timeval last = {0, 0};
- static uint16_t clock_seq;
- struct timeval tv;
- unsigned long long clock_reg;
-
-try_again:
- gettimeofday(&tv, 0);
- if ((last.tv_sec == 0) && (last.tv_usec == 0)) {
- get_random_bytes(&clock_seq, sizeof(clock_seq));
- clock_seq &= 0x3FFF;
- last = tv;
- last.tv_sec--;
- }
- if ((tv.tv_sec < last.tv_sec) ||
- ((tv.tv_sec == last.tv_sec) &&
- (tv.tv_usec < last.tv_usec))) {
- clock_seq = (clock_seq+1) & 0x3FFF;
- adjustment = 0;
- last = tv;
- } else if ((tv.tv_sec == last.tv_sec) &&
- (tv.tv_usec == last.tv_usec)) {
- if (adjustment >= MAX_ADJUSTMENT)
- goto try_again;
- adjustment++;
- } else {
- adjustment = 0;
- last = tv;
- }
-
- clock_reg = tv.tv_usec*10 + adjustment;
- clock_reg += ((unsigned long long) tv.tv_sec)*10000000;
- clock_reg += (((unsigned long long) 0x01B21DD2) << 32) + 0x13814000;
-
- *clock_high = clock_reg >> 32;
- *clock_low = clock_reg;
- *ret_clock_seq = clock_seq;
- return 0;
-}
-
-void uuid_generate_time(uuid_t out)
-{
- static unsigned char node_id[6];
- static int has_init = 0;
- struct uuid uu;
- uint32_t clock_mid;
-
- if (!has_init) {
- if (get_node_id(node_id) <= 0) {
- get_random_bytes(node_id, 6);
- /*
- * Set multicast bit, to prevent conflicts
- * with IEEE 802 addresses obtained from
- * network cards
- */
- node_id[0] |= 0x01;
- }
- has_init = 1;
- }
- get_clock(&clock_mid, &uu.time_low, &uu.clock_seq);
- uu.clock_seq |= 0x8000;
- uu.time_mid = (uint16_t) clock_mid;
- uu.time_hi_and_version = ((clock_mid >> 16) & 0x0FFF) | 0x1000;
- memcpy(uu.node, node_id, 6);
- uuid_pack(&uu, out);
-}
-
-void uuid_generate_random(uuid_t out)
-{
- uuid_t buf;
- struct uuid uu;
-
- get_random_bytes(buf, sizeof(buf));
- uuid_unpack(buf, &uu);
-
- uu.clock_seq = (uu.clock_seq & 0x3FFF) | 0x8000;
- uu.time_hi_and_version = (uu.time_hi_and_version & 0x0FFF) | 0x4000;
- uuid_pack(&uu, out);
-}
-
-/*
- * This is the generic front-end to uuid_generate_random and
- * uuid_generate_time. It uses uuid_generate_random only if
- * /dev/urandom is available, since otherwise we won't have
- * high-quality randomness.
- */
-void uuid_generate(uuid_t out)
-{
- if (get_random_fd() >= 0)
- uuid_generate_random(out);
- else
- uuid_generate_time(out);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * Internal routine for packing UUID's
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <string.h>
-#include "uuidP.h"
-
-void uuid_pack(const struct uuid *uu, uuid_t ptr)
-{
- uint32_t tmp;
- unsigned char *out = ptr;
-
- tmp = uu->time_low;
- out[3] = (unsigned char) tmp;
- tmp >>= 8;
- out[2] = (unsigned char) tmp;
- tmp >>= 8;
- out[1] = (unsigned char) tmp;
- tmp >>= 8;
- out[0] = (unsigned char) tmp;
-
- tmp = uu->time_mid;
- out[5] = (unsigned char) tmp;
- tmp >>= 8;
- out[4] = (unsigned char) tmp;
-
- tmp = uu->time_hi_and_version;
- out[7] = (unsigned char) tmp;
- tmp >>= 8;
- out[6] = (unsigned char) tmp;
-
- tmp = uu->clock_seq;
- out[9] = (unsigned char) tmp;
- tmp >>= 8;
- out[8] = (unsigned char) tmp;
-
- memcpy(out+10, uu->node, 6);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * parse.c --- UUID parsing
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-
-#include "uuidP.h"
-
-int uuid_parse(const char *in, uuid_t uu)
-{
- struct uuid uuid;
- int i;
- const char *cp;
- char buf[3];
-
- if (strlen(in) != 36)
- return -1;
- for (i=0, cp = in; i <= 36; i++,cp++) {
- if ((i == 8) || (i == 13) || (i == 18) ||
- (i == 23)) {
- if (*cp == '-')
- continue;
- else
- return -1;
- }
- if (i== 36)
- if (*cp == 0)
- continue;
- if (!isxdigit(*cp))
- return -1;
- }
- uuid.time_low = strtoul(in, NULL, 16);
- uuid.time_mid = strtoul(in+9, NULL, 16);
- uuid.time_hi_and_version = strtoul(in+14, NULL, 16);
- uuid.clock_seq = strtoul(in+19, NULL, 16);
- cp = in+24;
- buf[2] = 0;
- for (i=0; i < 6; i++) {
- buf[0] = *cp++;
- buf[1] = *cp++;
- uuid.node[i] = strtoul(buf, NULL, 16);
- }
-
- uuid_pack(&uuid, uu);
- return 0;
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * Internal routine for unpacking UUID
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <string.h>
-#include "uuidP.h"
-
-void uuid_unpack(const uuid_t in, struct uuid *uu)
-{
- const uint8_t *ptr = in;
- uint32_t tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- tmp = (tmp << 8) | *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_low = tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_mid = tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_hi_and_version = tmp;
-
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->clock_seq = tmp;
-
- memcpy(uu->node, ptr, 6);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * unparse.c -- convert a UUID to string
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <stdio.h>
-
-#include "uuidP.h"
-
-static const char *fmt_lower =
- "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x";
-
-static const char *fmt_upper =
- "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X";
-
-#ifdef UUID_UNPARSE_DEFAULT_UPPER
-#define FMT_DEFAULT fmt_upper
-#else
-#define FMT_DEFAULT fmt_lower
-#endif
-
-static void uuid_unparse_x(const uuid_t uu, char *out, const char *fmt)
-{
- struct uuid uuid;
-
- uuid_unpack(uu, &uuid);
- sprintf(out, fmt,
- uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
- uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
- uuid.node[0], uuid.node[1], uuid.node[2],
- uuid.node[3], uuid.node[4], uuid.node[5]);
-}
-
-void uuid_unparse_lower(const uuid_t uu, char *out)
-{
- uuid_unparse_x(uu, out, fmt_lower);
-}
-
-void uuid_unparse_upper(const uuid_t uu, char *out)
-{
- uuid_unparse_x(uu, out, fmt_upper);
-}
-
-void uuid_unparse(const uuid_t uu, char *out)
-{
- uuid_unparse_x(uu, out, FMT_DEFAULT);
-}
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * Public include file for the UUID library
- *
- * Copyright (C) 1996, 1997, 1998 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#ifndef _UUID_UUID_H
-#define _UUID_UUID_H
-
-#include <sys/types.h>
-#include <time.h>
-
-typedef unsigned char uuid_t[16];
-
-/* UUID Variant definitions */
-#define UUID_VARIANT_NCS 0
-#define UUID_VARIANT_DCE 1
-#define UUID_VARIANT_MICROSOFT 2
-#define UUID_VARIANT_OTHER 3
-
-/* UUID Type definitions */
-#define UUID_TYPE_DCE_TIME 1
-#define UUID_TYPE_DCE_RANDOM 4
-
-/* Allow UUID constants to be defined */
-#ifdef __GNUC__
-#define UUID_DEFINE(name,u0,u1,u2,u3,u4,u5,u6,u7,u8,u9,u10,u11,u12,u13,u14,u15) \
- static const uuid_t name ATTRIBUTE_UNUSED = {u0,u1,u2,u3,u4,u5,u6,u7,u8,u9,u10,u11,u12,u13,u14,u15}
-#else
-#define UUID_DEFINE(name,u0,u1,u2,u3,u4,u5,u6,u7,u8,u9,u10,u11,u12,u13,u14,u15) \
- static const uuid_t name = {u0,u1,u2,u3,u4,u5,u6,u7,u8,u9,u10,u11,u12,u13,u14,u15}
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* clear.c */
-/*void uuid_clear(uuid_t uu);*/
-#define uuid_clear(uu) memset(uu, 0, sizeof(uu))
-
-/* compare.c */
-int uuid_compare(const uuid_t uu1, const uuid_t uu2);
-
-/* copy.c */
-/*void uuid_copy(uuid_t dst, const uuid_t src);*/
-#define uuid_copy(dst,src) memcpy(dst, src, sizeof(dst))
-
-/* gen_uuid.c */
-void uuid_generate(uuid_t out);
-void uuid_generate_random(uuid_t out);
-void uuid_generate_time(uuid_t out);
-
-/* isnull.c */
-/*int uuid_is_null(const uuid_t uu);*/
-#define uuid_is_null(uu) (!memcmp(uu, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", sizeof(uu)))
-
-/* parse.c */
-int uuid_parse(const char *in, uuid_t uu);
-
-/* unparse.c */
-void uuid_unparse(const uuid_t uu, char *out);
-void uuid_unparse_lower(const uuid_t uu, char *out);
-void uuid_unparse_upper(const uuid_t uu, char *out);
-
-/* uuid_time.c */
-time_t uuid_time(const uuid_t uu, struct timeval *ret_tv);
-int uuid_type(const uuid_t uu);
-int uuid_variant(const uuid_t uu);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _UUID_UUID_H */
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * uuid.h -- private header file for uuids
- *
- * Copyright (C) 1996, 1997 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <inttypes.h>
-#include <sys/types.h>
-
-#include "uuid.h"
-
-/*
- * Offset between 15-Oct-1582 and 1-Jan-70
- */
-#define TIME_OFFSET_HIGH 0x01B21DD2
-#define TIME_OFFSET_LOW 0x13814000
-
-struct uuid {
- uint32_t time_low;
- uint16_t time_mid;
- uint16_t time_hi_and_version;
- uint16_t clock_seq;
- uint8_t node[6];
-};
-
-
-/*
- * prototypes
- */
-void uuid_pack(const struct uuid *uu, uuid_t ptr);
-void uuid_unpack(const uuid_t in, struct uuid *uu);
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * uuid_time.c --- Interpret the time field from a uuid. This program
- * violates the UUID abstraction barrier by reaching into the guts
- * of a UUID and interpreting it.
- *
- * Copyright (C) 1998, 1999 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <time.h>
-
-#include "uuidP.h"
-
-time_t uuid_time(const uuid_t uu, struct timeval *ret_tv)
-{
- struct uuid uuid;
- uint32_t high;
- struct timeval tv;
- unsigned long long clock_reg;
-
- uuid_unpack(uu, &uuid);
-
- high = uuid.time_mid | ((uuid.time_hi_and_version & 0xFFF) << 16);
- clock_reg = uuid.time_low | ((unsigned long long) high << 32);
-
- clock_reg -= (((unsigned long long) 0x01B21DD2) << 32) + 0x13814000;
- tv.tv_sec = clock_reg / 10000000;
- tv.tv_usec = (clock_reg % 10000000) / 10;
-
- if (ret_tv)
- *ret_tv = tv;
-
- return tv.tv_sec;
-}
-
-int uuid_type(const uuid_t uu)
-{
- struct uuid uuid;
-
- uuid_unpack(uu, &uuid);
- return ((uuid.time_hi_and_version >> 12) & 0xF);
-}
-
-int uuid_variant(const uuid_t uu)
-{
- struct uuid uuid;
- int var;
-
- uuid_unpack(uu, &uuid);
- var = uuid.clock_seq;
-
- if ((var & 0x8000) == 0)
- return UUID_VARIANT_NCS;
- if ((var & 0x4000) == 0)
- return UUID_VARIANT_DCE;
- if ((var & 0x2000) == 0)
- return UUID_VARIANT_MICROSOFT;
- return UUID_VARIANT_OTHER;
-}
-
-#ifdef DEBUG
-static const char *variant_string(int variant)
-{
- switch (variant) {
- case UUID_VARIANT_NCS:
- return "NCS";
- case UUID_VARIANT_DCE:
- return "DCE";
- case UUID_VARIANT_MICROSOFT:
- return "Microsoft";
- default:
- return "Other";
- }
-}
-
-
-int
-main(int argc, char **argv)
-{
- uuid_t buf;
- time_t time_reg;
- struct timeval tv;
- int type, variant;
-
- if (argc != 2) {
- fprintf(stderr, "Usage: %s uuid\n", argv[0]);
- exit(1);
- }
- if (uuid_parse(argv[1], buf)) {
- fprintf(stderr, "Invalid UUID: %s\n", argv[1]);
- exit(1);
- }
- variant = uuid_variant(buf);
- type = uuid_type(buf);
- time_reg = uuid_time(buf, &tv);
-
- printf("UUID variant is %d (%s)\n", variant, variant_string(variant));
- if (variant != UUID_VARIANT_DCE) {
- printf("Warning: This program only knows how to interpret "
- "DCE UUIDs.\n\tThe rest of the output is likely "
- "to be incorrect!!\n");
- }
- printf("UUID type is %d", type);
- switch (type) {
- case 1:
- printf(" (time based)\n");
- break;
- case 2:
- printf(" (DCE)\n");
- break;
- case 3:
- printf(" (name-based)\n");
- break;
- case 4:
- printf(" (random)\n");
- break;
- default:
- puts("");
- }
- if (type != 1) {
- printf("Warning: not a time-based UUID, so UUID time "
- "decoding will likely not work!\n");
- }
- printf("UUID time is: (%ld, %ld): %s\n", tv.tv_sec, tv.tv_usec,
- ctime(&time_reg));
-
- return 0;
-}
-#endif
projects / platform / upstream / busybox.git / commitdiff