/*
* fsck.c - a file system consistency checker for Linux.
*
- * (C) 1991, 1992 Linus Torvalds. This file may be redistributed
- * as per the GNU copyleft.
+ * (C) 1991, 1992 Linus Torvalds.
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
/*
- * 09.11.91 - made the first rudimetary functions
+ * 09.11.91 - made the first rudimentary functions
*
* 10.11.91 - updated, does checking, no repairs yet.
* Sent out to the mailing-list for testing.
*
- * 14.11.91 - Testing seems to have gone well. Added some
+ * 14.11.91 - Testing seems to have gone well. Added some
* correction-code, and changed some functions.
*
* 15.11.91 - More correction code. Hopefully it notices most
* 16.11.91 - More corrections (thanks to Mika Jalava). Most
* things seem to work now. Yeah, sure.
*
- *
- * 19.04.92 - Had to start over again from this old version, as a
+ * 19.04.92 - Had to start over again from this old version, as a
* kernel bug ate my enhanced fsck in february.
*
- * 28.02.93 - added support for different directory entry sizes..
+ * 28.02.93 - added support for different directory entry sizes..
*
* Sat Mar 6 18:59:42 1993, faith@cs.unc.edu: Output namelen with
- * super-block information
+ * superblock information
*
* Sat Oct 9 11:17:11 1993, faith@cs.unc.edu: make exit status conform
* to that required by fsutil
*
* Mon Jan 3 11:06:52 1994 - Dr. Wettstein (greg%wind.uucp@plains.nodak.edu)
- * Added support for file system valid flag. Also
- * added program_version variable and output of
- * program name and version number when program
- * is executed.
+ * Added support for file system valid flag. Also
+ * added program_version variable and output of
+ * program name and version number when program
+ * is executed.
*
- * 30.10.94 - added support for v2 filesystem
- * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
+ * 30.10.94 - added support for v2 filesystem
+ * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
*
- * 10.12.94 - added test to prevent checking of mounted fs adapted
- * from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck
- * program. (Daniel Quinlan, quinlan@yggdrasil.com)
+ * 10.12.94 - added test to prevent checking of mounted fs adapted
+ * from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck
+ * program. (Daniel Quinlan, quinlan@yggdrasil.com)
*
* 01.07.96 - Fixed the v2 fs stuff to use the right #defines and such
- * for modern libcs (janl@math.uio.no, Nicolai Langfeldt)
+ * for modern libcs (janl@math.uio.no, Nicolai Langfeldt)
*
- * 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk
+ * 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk
* (Russell King). He made them for ARM. It would seem
- * that the ARM is powerful enough to do this in C whereas
+ * that the ARM is powerful enough to do this in C whereas
* i386 and m64k must use assembly to get it fast >:-)
- * This should make minix fsck systemindependent.
- * (janl@math.uio.no, Nicolai Langfeldt)
+ * This should make minix fsck system-independent.
+ * (janl@math.uio.no, Nicolai Langfeldt)
*
* 04.11.96 - Added minor fixes from Andreas Schwab to avoid compiler
- * warnings. Added mc68k bitops from
- * Joerg Dorchain <dorchain@mpi-sb.mpg.de>.
+ * warnings. Added mc68k bitops from
+ * Joerg Dorchain <dorchain@mpi-sb.mpg.de>.
*
* 06.11.96 - Added v2 code submitted by Joerg Dorchain, but written by
* Andreas Schwab.
*
- * 1999-02-22 Arkadiusz MiΒΆkiewicz <misiek@misiek.eu.org>
+ * 1999-02-22 Arkadiusz Mickiewicz <misiek@misiek.eu.org>
* - added Native Language Support
*
*
* unless you can be sure nobody is writing to it (and remember that the
* kernel can write to it when it searches for files).
*
- * Usuage: fsck [-larvsm] device
+ * Usage: fsck [-larvsm] device
* -l for a listing of all the filenames
* -a for automatic repairs (not implemented)
* -r for repairs (interactive) (not implemented)
* -v for verbose (tells how many files)
- * -s for super-block info
+ * -s for superblock info
* -m for minix-like "mode not cleared" warnings
* -f force filesystem check even if filesystem marked as valid
*
* 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 :-).
+ * enforced (but it's not much fun on a character device :-).
*/
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <termios.h>
-#include <mntent.h>
-#include <sys/param.h>
-#include "busybox.h"
-
-
- typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
-
-static const int MINIX_ROOT_INO = 1;
-static const int MINIX_LINK_MAX = 250;
-static const int MINIX2_LINK_MAX = 65530;
-
-static const int MINIX_I_MAP_SLOTS = 8;
-static const int MINIX_Z_MAP_SLOTS = 64;
-static const int MINIX_SUPER_MAGIC = 0x137F; /* original minix fs */
-static const int MINIX_SUPER_MAGIC2 = 0x138F; /* minix fs, 30 char names */
-static const int MINIX2_SUPER_MAGIC = 0x2468; /* minix V2 fs */
-static const int MINIX2_SUPER_MAGIC2 = 0x2478; /* minix V2 fs, 30 char names */
-static const int MINIX_VALID_FS = 0x0001; /* Clean fs. */
-static const int MINIX_ERROR_FS = 0x0002; /* fs has errors. */
+//usage:#define fsck_minix_trivial_usage
+//usage: "[-larvsmf] BLOCKDEV"
+//usage:#define fsck_minix_full_usage "\n\n"
+//usage: "Check MINIX filesystem\n"
+//usage: "\n -l List all filenames"
+//usage: "\n -r Perform interactive repairs"
+//usage: "\n -a Perform automatic repairs"
+//usage: "\n -v Verbose"
+//usage: "\n -s Output superblock information"
+//usage: "\n -m Show \"mode not cleared\" warnings"
+//usage: "\n -f Force file system check"
-#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
-#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
-
-static const int MINIX_V1 = 0x0001; /* original minix fs */
-static const int MINIX_V2 = 0x0002; /* minix V2 fs */
-
-#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version
+#include <mntent.h>
+#include "libbb.h"
+#include "minix.h"
-/*
- * This is the original minix inode layout on disk.
- * Note the 8-bit gid and atime and ctime.
- */
-struct minix_inode {
- u16 i_mode;
- u16 i_uid;
- u32 i_size;
- u32 i_time;
- u8 i_gid;
- u8 i_nlinks;
- u16 i_zone[9];
-};
+#ifndef BLKGETSIZE
+#define BLKGETSIZE _IO(0x12,96) /* return device size */
+#endif
-/*
- * The new minix inode has all the time entries, as well as
- * long block numbers and a third indirect block (7+1+1+1
- * instead of 7+1+1). Also, some previously 8-bit values are
- * now 16-bit. The inode is now 64 bytes instead of 32.
- */
-struct minix2_inode {
- u16 i_mode;
- u16 i_nlinks;
- u16 i_uid;
- u16 i_gid;
- u32 i_size;
- u32 i_atime;
- u32 i_mtime;
- u32 i_ctime;
- u32 i_zone[10];
+struct BUG_bad_inode_size {
+ char BUG_bad_inode1_size[(INODE_SIZE1 * MINIX1_INODES_PER_BLOCK != BLOCK_SIZE) ? -1 : 1];
+#if ENABLE_FEATURE_MINIX2
+ char BUG_bad_inode2_size[(INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) ? -1 : 1];
+#endif
};
-/*
- * minix super-block data on disk
- */
-struct minix_super_block {
- u16 s_ninodes;
- u16 s_nzones;
- u16 s_imap_blocks;
- u16 s_zmap_blocks;
- u16 s_firstdatazone;
- u16 s_log_zone_size;
- u32 s_max_size;
- u16 s_magic;
- u16 s_state;
- u32 s_zones;
+enum {
+#ifdef UNUSED
+ MINIX1_LINK_MAX = 250,
+ MINIX2_LINK_MAX = 65530,
+ MINIX_I_MAP_SLOTS = 8,
+ MINIX_Z_MAP_SLOTS = 64,
+ MINIX_V1 = 0x0001, /* original minix fs */
+ MINIX_V2 = 0x0002, /* minix V2 fs */
+#endif
+ MINIX_NAME_MAX = 255, /* # chars in a file name */
};
-struct minix_dir_entry {
- u16 inode;
- char name[0];
-};
-#define BLOCK_SIZE_BITS 10
-#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
+#if !ENABLE_FEATURE_MINIX2
+enum { version2 = 0 };
+#endif
-#define NAME_MAX 255 /* # chars in a file name */
+enum { MAX_DEPTH = 32 };
-#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
+enum { dev_fd = 3 };
-#ifndef BLKGETSIZE
-#define BLKGETSIZE _IO(0x12,96) /* return device size */
+struct globals {
+#if ENABLE_FEATURE_MINIX2
+ smallint version2;
#endif
-
-#ifndef __linux__
-#define volatile
+ smallint changed; /* is filesystem modified? */
+ smallint errors_uncorrected; /* flag if some error was not corrected */
+ smallint termios_set;
+ smallint dirsize;
+ smallint namelen;
+ const char *device_name;
+ int directory, regular, blockdev, chardev, links, symlinks, total;
+ char *inode_buffer;
+
+ char *inode_map;
+ char *zone_map;
+
+ unsigned char *inode_count;
+ unsigned char *zone_count;
+
+ /* File-name data */
+ int name_depth;
+ char *name_component[MAX_DEPTH+1];
+
+ /* Bigger stuff */
+ struct termios sv_termios;
+ char superblock_buffer[BLOCK_SIZE];
+ char add_zone_ind_blk[BLOCK_SIZE];
+ char add_zone_dind_blk[BLOCK_SIZE];
+ IF_FEATURE_MINIX2(char add_zone_tind_blk[BLOCK_SIZE];)
+ char check_file_blk[BLOCK_SIZE];
+
+ /* File-name data */
+ char current_name[MAX_DEPTH * MINIX_NAME_MAX];
+};
+#define G (*ptr_to_globals)
+#if ENABLE_FEATURE_MINIX2
+#define version2 (G.version2 )
#endif
+#define changed (G.changed )
+#define errors_uncorrected (G.errors_uncorrected )
+#define termios_set (G.termios_set )
+#define dirsize (G.dirsize )
+#define namelen (G.namelen )
+#define device_name (G.device_name )
+#define directory (G.directory )
+#define regular (G.regular )
+#define blockdev (G.blockdev )
+#define chardev (G.chardev )
+#define links (G.links )
+#define symlinks (G.symlinks )
+#define total (G.total )
+#define inode_buffer (G.inode_buffer )
+#define inode_map (G.inode_map )
+#define zone_map (G.zone_map )
+#define inode_count (G.inode_count )
+#define zone_count (G.zone_count )
+#define name_depth (G.name_depth )
+#define name_component (G.name_component )
+#define sv_termios (G.sv_termios )
+#define superblock_buffer (G.superblock_buffer )
+#define add_zone_ind_blk (G.add_zone_ind_blk )
+#define add_zone_dind_blk (G.add_zone_dind_blk )
+#define add_zone_tind_blk (G.add_zone_tind_blk )
+#define check_file_blk (G.check_file_blk )
+#define current_name (G.current_name )
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ dirsize = 16; \
+ namelen = 14; \
+ current_name[0] = '/'; \
+ /*current_name[1] = '\0';*/ \
+ name_component[0] = ¤t_name[0]; \
+} while (0)
+
+
+#define OPTION_STR "larvsmf"
+enum {
+ OPT_l = (1 << 0),
+ OPT_a = (1 << 1),
+ OPT_r = (1 << 2),
+ OPT_v = (1 << 3),
+ OPT_s = (1 << 4),
+ OPT_w = (1 << 5),
+ OPT_f = (1 << 6),
+};
+#define OPT_list (option_mask32 & OPT_l)
+#define OPT_automatic (option_mask32 & OPT_a)
+#define OPT_repair (option_mask32 & OPT_r)
+#define OPT_verbose (option_mask32 & OPT_v)
+#define OPT_show (option_mask32 & OPT_s)
+#define OPT_warn_mode (option_mask32 & OPT_w)
+#define OPT_force (option_mask32 & OPT_f)
+/* non-automatic repairs requested? */
+#define OPT_manual ((option_mask32 & (OPT_a|OPT_r)) == OPT_r)
+
+
+#define Inode1 (((struct minix1_inode *) inode_buffer)-1)
+#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
-static const int ROOT_INO = 1;
+#define Super (*(struct minix_superblock *)(superblock_buffer))
-#define UPPER(size,n) ((size+((n)-1))/(n))
-#define INODE_SIZE (sizeof(struct minix_inode))
-#ifdef BB_FEATURE_MINIX2
-#define INODE_SIZE2 (sizeof(struct minix2_inode))
-#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
- : MINIX_INODES_PER_BLOCK))
+#if ENABLE_FEATURE_MINIX2
+# define ZONES ((unsigned)(version2 ? Super.s_zones : Super.s_nzones))
#else
-#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
+# define ZONES ((unsigned)(Super.s_nzones))
#endif
-#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
-
-#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
-
-static char *program_version = "1.2 - 11/11/96";
-static char *device_name = NULL;
-static int IN;
-static int repair = 0, automatic = 0, verbose = 0, list = 0, show =
- 0, warn_mode = 0, force = 0;
-static int directory = 0, regular = 0, blockdev = 0, chardev = 0, links =
- 0, symlinks = 0, total = 0;
-
-static int changed = 0; /* flags if the filesystem has been changed */
-static int errors_uncorrected = 0; /* flag if some error was not corrected */
-static int dirsize = 16;
-static int namelen = 14;
-static int version2 = 0;
-static struct termios termios;
-static int termios_set = 0;
-
-/* File-name data */
-static const int MAX_DEPTH = 32;
-static int name_depth = 0;
-// static char name_list[MAX_DEPTH][BUFSIZ + 1];
-static char **name_list = NULL;
-
-static char *inode_buffer = NULL;
-
-#define Inode (((struct minix_inode *) inode_buffer)-1)
-#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
-static char super_block_buffer[BLOCK_SIZE];
+#define INODES ((unsigned)Super.s_ninodes)
+#define IMAPS ((unsigned)Super.s_imap_blocks)
+#define ZMAPS ((unsigned)Super.s_zmap_blocks)
+#define FIRSTZONE ((unsigned)Super.s_firstdatazone)
+#define ZONESIZE ((unsigned)Super.s_log_zone_size)
+#define MAXSIZE ((unsigned)Super.s_max_size)
+#define MAGIC (Super.s_magic)
+
+/* gcc likes this more (code is smaller) than macro variant */
+static ALWAYS_INLINE unsigned div_roundup(unsigned size, unsigned n)
+{
+ return (size + n-1) / n;
+}
-#define Super (*(struct minix_super_block *)super_block_buffer)
-#define INODES ((unsigned long)Super.s_ninodes)
-#ifdef BB_FEATURE_MINIX2
-#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
+#if !ENABLE_FEATURE_MINIX2
+#define INODE_BLOCKS div_roundup(INODES, MINIX1_INODES_PER_BLOCK)
#else
-#define ZONES ((unsigned long)(Super.s_nzones))
-#endif
-#define IMAPS ((unsigned long)Super.s_imap_blocks)
-#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
-#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
-#define ZONESIZE ((unsigned long)Super.s_log_zone_size)
-#define MAXSIZE ((unsigned long)Super.s_max_size)
-#define MAGIC (Super.s_magic)
-#define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
-
-static char *inode_map;
-static char *zone_map;
-
-static unsigned char *inode_count = NULL;
-static unsigned char *zone_count = NULL;
-
-static void recursive_check(unsigned int ino);
-#ifdef BB_FEATURE_MINIX2
-static void recursive_check2(unsigned int ino);
+#define INODE_BLOCKS div_roundup(INODES, \
+ (version2 ? MINIX2_INODES_PER_BLOCK : MINIX1_INODES_PER_BLOCK))
#endif
-static inline int bit(char * a,unsigned int i)
+#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
+#define NORM_FIRSTZONE (2 + IMAPS + ZMAPS + INODE_BLOCKS)
+
+/* Before you ask "where they come from?": */
+/* setbit/clrbit are supplied by sys/param.h */
+
+static int minix_bit(const char *a, unsigned i)
+{
+ return (a[i >> 3] & (1<<(i & 7)));
+}
+
+static void minix_setbit(char *a, unsigned i)
{
- return (a[i >> 3] & (1<<(i & 7))) != 0;
+ setbit(a, i);
+ changed = 1;
}
-#define inode_in_use(x) (bit(inode_map,(x)))
-#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
+static void minix_clrbit(char *a, unsigned i)
+{
+ clrbit(a, i);
+ changed = 1;
+}
+
+/* Note: do not assume 0/1, it is 0/nonzero */
+#define zone_in_use(x) (minix_bit(zone_map,(x)-FIRSTZONE+1))
+#define inode_in_use(x) (minix_bit(inode_map,(x)))
-#define mark_inode(x) (setbit(inode_map,(x)),changed=1)
-#define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)
+#define mark_inode(x) (minix_setbit(inode_map,(x)))
+#define unmark_inode(x) (minix_clrbit(inode_map,(x)))
-#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1)
-#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1)
+#define mark_zone(x) (minix_setbit(zone_map,(x)-FIRSTZONE+1))
+#define unmark_zone(x) (minix_clrbit(zone_map,(x)-FIRSTZONE+1))
-static void leave(int) __attribute__ ((noreturn));
-static void leave(int status)
+
+static void recursive_check(unsigned ino);
+#if ENABLE_FEATURE_MINIX2
+static void recursive_check2(unsigned ino);
+#endif
+
+static void die(const char *str) NORETURN;
+static void die(const char *str)
{
if (termios_set)
- tcsetattr(0, TCSANOW, &termios);
- exit(status);
+ tcsetattr_stdin_TCSANOW(&sv_termios);
+ bb_error_msg_and_die("%s", str);
}
-static void die(const char *str)
+static void push_filename(const char *name)
{
- error_msg("%s", str);
- leave(8);
+ // /dir/dir/dir/file
+ // ^ ^ ^
+ // [0] [1] [2] <-name_component[i]
+ if (name_depth < MAX_DEPTH) {
+ int len;
+ char *p = name_component[name_depth];
+ *p++ = '/';
+ len = sprintf(p, "%.*s", namelen, name);
+ name_component[name_depth + 1] = p + len;
+ }
+ name_depth++;
}
-/*
- * This simply goes through the file-name data and prints out the
- * current file.
- */
-static void print_current_name(void)
+static void pop_filename(void)
{
- int i = 0;
-
- while (i < name_depth)
- printf("/%.*s", namelen, name_list[i++]);
- if (i == 0)
- printf("/");
+ name_depth--;
+ if (name_depth < MAX_DEPTH) {
+ *name_component[name_depth] = '\0';
+ if (!name_depth) {
+ current_name[0] = '/';
+ current_name[1] = '\0';
+ }
+ }
}
static int ask(const char *string, int def)
{
int c;
- if (!repair) {
- printf("\n");
+ if (!OPT_repair) {
+ bb_putchar('\n');
errors_uncorrected = 1;
return 0;
}
- if (automatic) {
- printf("\n");
+ if (OPT_automatic) {
+ bb_putchar('\n');
if (!def)
errors_uncorrected = 1;
return def;
}
printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
for (;;) {
- fflush(stdout);
- if ((c = getchar()) == EOF) {
+ fflush_all();
+ c = getchar();
+ if (c == EOF) {
if (!def)
errors_uncorrected = 1;
return def;
}
- c = toupper(c);
- if (c == 'Y') {
+ if (c == '\n')
+ break;
+ c |= 0x20; /* tolower */
+ if (c == 'y') {
def = 1;
break;
- } else if (c == 'N') {
+ }
+ if (c == 'n') {
def = 0;
break;
- } else if (c == ' ' || c == '\n')
- break;
+ }
}
if (def)
printf("y\n");
*/
static void check_mount(void)
{
- FILE *f;
- struct mntent *mnt;
- int cont;
- int fd;
-
- if ((f = setmntent(MOUNTED, "r")) == NULL)
- return;
- while ((mnt = getmntent(f)) != NULL)
- if (strcmp(device_name, mnt->mnt_fsname) == 0)
- break;
- endmntent(f);
- if (!mnt)
- return;
-
- /*
- * If the root is mounted read-only, then /etc/mtab is
- * probably not correct; so we won't issue a warning based on
- * it.
- */
- fd = open(MOUNTED, O_RDWR);
- if (fd < 0 && errno == EROFS)
- return;
- else
+ if (find_mount_point(device_name, 0)) {
+ int cont;
+#if ENABLE_FEATURE_MTAB_SUPPORT
+ /*
+ * If the root is mounted read-only, then /etc/mtab is
+ * probably not correct; so we won't issue a warning based on
+ * it.
+ */
+ int fd = open(bb_path_mtab_file, O_RDWR);
+
+ if (fd < 0 && errno == EROFS)
+ return;
close(fd);
-
- printf("%s is mounted. ", device_name);
- if (isatty(0) && isatty(1))
- cont = ask("Do you really want to continue", 0);
- else
+#endif
+ printf("%s is mounted. ", device_name);
cont = 0;
- if (!cont) {
- printf("check aborted.\n");
- exit(0);
+ if (isatty(0) && isatty(1))
+ cont = ask("Do you really want to continue", 0);
+ if (!cont) {
+ printf("Check aborted\n");
+ exit(EXIT_SUCCESS);
+ }
}
- return;
}
/*
* if an error was corrected, and returns the zone (0 for no zone
* or a bad zone-number).
*/
-static int check_zone_nr(unsigned short *nr, int *corrected)
+static int check_zone_nr2(uint32_t *nr, smallint *corrected)
{
+ const char *msg;
if (!*nr)
return 0;
if (*nr < FIRSTZONE)
- printf("Zone nr < FIRSTZONE in file `");
+ msg = "< FIRSTZONE";
else if (*nr >= ZONES)
- printf("Zone nr >= ZONES in file `");
+ msg = ">= ZONES";
else
return *nr;
- print_current_name();
- printf("'.");
+ printf("Zone nr %s in file '%s'. ", msg, current_name);
if (ask("Remove block", 1)) {
*nr = 0;
*corrected = 1;
return 0;
}
-#ifdef BB_FEATURE_MINIX2
-static int check_zone_nr2(unsigned int *nr, int *corrected)
+static int check_zone_nr(uint16_t *nr, smallint *corrected)
{
- if (!*nr)
- return 0;
- if (*nr < FIRSTZONE)
- printf("Zone nr < FIRSTZONE in file `");
- else if (*nr >= ZONES)
- printf("Zone nr >= ZONES in file `");
- else
- return *nr;
- print_current_name();
- printf("'.");
- if (ask("Remove block", 1)) {
- *nr = 0;
- *corrected = 1;
- }
- return 0;
+ uint32_t nr32 = *nr;
+ int r = check_zone_nr2(&nr32, corrected);
+ *nr = (uint16_t)nr32;
+ return r;
}
-#endif
/*
* read-block reads block nr into the buffer at addr.
*/
-static void read_block(unsigned int nr, char *addr)
+static void read_block(unsigned nr, void *addr)
{
if (!nr) {
memset(addr, 0, BLOCK_SIZE);
return;
}
- if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) {
- printf("Read error: unable to seek to block in file '");
- print_current_name();
- printf("'\n");
- memset(addr, 0, BLOCK_SIZE);
+ xlseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET);
+ if (BLOCK_SIZE != full_read(dev_fd, addr, BLOCK_SIZE)) {
+ printf("%s: bad block %u in file '%s'\n",
+ bb_msg_read_error, nr, current_name);
errors_uncorrected = 1;
- } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
- printf("Read error: bad block in file '");
- print_current_name();
- printf("'\n");
memset(addr, 0, BLOCK_SIZE);
- errors_uncorrected = 1;
}
}
/*
* write_block writes block nr to disk.
*/
-static void write_block(unsigned int nr, char *addr)
+static void write_block(unsigned nr, void *addr)
{
if (!nr)
return;
errors_uncorrected = 1;
return;
}
- if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET))
- die("seek failed in write_block");
- if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
- printf("Write error: bad block in file '");
- print_current_name();
- printf("'\n");
+ xlseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET);
+ if (BLOCK_SIZE != full_write(dev_fd, addr, BLOCK_SIZE)) {
+ printf("%s: bad block %u in file '%s'\n",
+ bb_msg_write_error, nr, current_name);
errors_uncorrected = 1;
}
}
/*
- * map-block calculates the absolute block nr of a block in a file.
+ * map_block calculates the absolute block nr of a block in a file.
* It sets 'changed' if the inode has needed changing, and re-writes
* any indirect blocks with errors.
*/
-static int map_block(struct minix_inode *inode, unsigned int blknr)
+static int map_block(struct minix1_inode *inode, unsigned blknr)
{
- unsigned short ind[BLOCK_SIZE >> 1];
- unsigned short dind[BLOCK_SIZE >> 1];
- int blk_chg, block, result;
+ uint16_t ind[BLOCK_SIZE >> 1];
+ int block, result;
+ smallint blk_chg;
if (blknr < 7)
return check_zone_nr(inode->i_zone + blknr, &changed);
blknr -= 7;
if (blknr < 512) {
block = check_zone_nr(inode->i_zone + 7, &changed);
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr(blknr + ind, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
+ goto common;
}
blknr -= 512;
block = check_zone_nr(inode->i_zone + 8, &changed);
- read_block(block, (char *) dind);
+ read_block(block, ind); /* double indirect */
blk_chg = 0;
- result = check_zone_nr(dind + (blknr / 512), &blk_chg);
+ result = check_zone_nr(&ind[blknr / 512], &blk_chg);
if (blk_chg)
- write_block(block, (char *) dind);
+ write_block(block, ind);
block = result;
- read_block(block, (char *) ind);
+ common:
+ read_block(block, ind);
blk_chg = 0;
- result = check_zone_nr(ind + (blknr % 512), &blk_chg);
+ result = check_zone_nr(&ind[blknr % 512], &blk_chg);
if (blk_chg)
- write_block(block, (char *) ind);
+ write_block(block, ind);
return result;
}
-#ifdef BB_FEATURE_MINIX2
-static int map_block2(struct minix2_inode *inode, unsigned int blknr)
+#if ENABLE_FEATURE_MINIX2
+static int map_block2(struct minix2_inode *inode, unsigned blknr)
{
- unsigned int ind[BLOCK_SIZE >> 2];
- unsigned int dind[BLOCK_SIZE >> 2];
- unsigned int tind[BLOCK_SIZE >> 2];
- int blk_chg, block, result;
+ uint32_t ind[BLOCK_SIZE >> 2];
+ int block, result;
+ smallint blk_chg;
if (blknr < 7)
return check_zone_nr2(inode->i_zone + blknr, &changed);
blknr -= 7;
if (blknr < 256) {
block = check_zone_nr2(inode->i_zone + 7, &changed);
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(blknr + ind, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
+ goto common2;
}
blknr -= 256;
- if (blknr >= 256 * 256) {
+ if (blknr < 256 * 256) {
block = check_zone_nr2(inode->i_zone + 8, &changed);
- read_block(block, (char *) dind);
- blk_chg = 0;
- result = check_zone_nr2(dind + blknr / 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) dind);
- block = result;
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(ind + blknr % 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
+ goto common1;
}
blknr -= 256 * 256;
block = check_zone_nr2(inode->i_zone + 9, &changed);
- read_block(block, (char *) tind);
+ read_block(block, ind); /* triple indirect */
blk_chg = 0;
- result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
+ result = check_zone_nr2(&ind[blknr / (256 * 256)], &blk_chg);
if (blk_chg)
- write_block(block, (char *) tind);
+ write_block(block, ind);
block = result;
- read_block(block, (char *) dind);
+ common1:
+ read_block(block, ind); /* double indirect */
blk_chg = 0;
- result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
+ result = check_zone_nr2(&ind[(blknr / 256) % 256], &blk_chg);
if (blk_chg)
- write_block(block, (char *) dind);
+ write_block(block, ind);
block = result;
- read_block(block, (char *) ind);
+ common2:
+ read_block(block, ind);
blk_chg = 0;
- result = check_zone_nr2(ind + blknr % 256, &blk_chg);
+ result = check_zone_nr2(&ind[blknr % 256], &blk_chg);
if (blk_chg)
- write_block(block, (char *) ind);
+ write_block(block, ind);
return result;
}
#endif
-static void write_super_block(void)
+static void write_superblock(void)
{
/*
* Set the state of the filesystem based on whether or not there
* are uncorrected errors. The filesystem valid flag is
* unconditionally set if we get this far.
*/
- Super.s_state |= MINIX_VALID_FS;
- if (errors_uncorrected)
- Super.s_state |= MINIX_ERROR_FS;
- else
+ Super.s_state |= MINIX_VALID_FS | MINIX_ERROR_FS;
+ if (!errors_uncorrected)
Super.s_state &= ~MINIX_ERROR_FS;
- if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
- die("seek failed in write_super_block");
- if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
- die("unable to write super-block");
-
- return;
+ xlseek(dev_fd, BLOCK_SIZE, SEEK_SET);
+ if (BLOCK_SIZE != full_write(dev_fd, superblock_buffer, BLOCK_SIZE))
+ die("can't write superblock");
}
static void write_tables(void)
{
- write_super_block();
-
- if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE))
- die("Unable to write inode map");
- if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE))
- die("Unable to write zone map");
- if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE))
- die("Unable to write inodes");
+ write_superblock();
+
+ if (IMAPS * BLOCK_SIZE != write(dev_fd, inode_map, IMAPS * BLOCK_SIZE))
+ die("can't write inode map");
+ if (ZMAPS * BLOCK_SIZE != write(dev_fd, zone_map, ZMAPS * BLOCK_SIZE))
+ die("can't write zone map");
+ if (INODE_BUFFER_SIZE != write(dev_fd, inode_buffer, INODE_BUFFER_SIZE))
+ die("can't write inodes");
}
static void get_dirsize(void)
char blk[BLOCK_SIZE];
int size;
-#ifdef BB_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
if (version2)
- block = Inode2[ROOT_INO].i_zone[0];
+ block = Inode2[MINIX_ROOT_INO].i_zone[0];
else
#endif
- block = Inode[ROOT_INO].i_zone[0];
+ block = Inode1[MINIX_ROOT_INO].i_zone[0];
read_block(block, blk);
for (size = 16; size < BLOCK_SIZE; size <<= 1) {
if (strcmp(blk + size + 2, "..") == 0) {
static void read_superblock(void)
{
- if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
- die("seek failed");
- if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
- die("unable to read super block");
- if (MAGIC == MINIX_SUPER_MAGIC) {
- namelen = 14;
- dirsize = 16;
- version2 = 0;
- } else if (MAGIC == MINIX_SUPER_MAGIC2) {
+ xlseek(dev_fd, BLOCK_SIZE, SEEK_SET);
+ if (BLOCK_SIZE != full_read(dev_fd, superblock_buffer, BLOCK_SIZE))
+ die("can't read superblock");
+ /* already initialized to:
+ namelen = 14;
+ dirsize = 16;
+ version2 = 0;
+ */
+ if (MAGIC == MINIX1_SUPER_MAGIC) {
+ } else if (MAGIC == MINIX1_SUPER_MAGIC2) {
namelen = 30;
dirsize = 32;
- version2 = 0;
-#ifdef BB_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
} else if (MAGIC == MINIX2_SUPER_MAGIC) {
- namelen = 14;
- dirsize = 16;
version2 = 1;
} else if (MAGIC == MINIX2_SUPER_MAGIC2) {
namelen = 30;
version2 = 1;
#endif
} else
- die("bad magic number in super-block");
+ die("bad magic number in superblock");
if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
- die("Only 1k blocks/zones supported");
+ die("only 1k blocks/zones supported");
if (IMAPS * BLOCK_SIZE * 8 < INODES + 1)
- die("bad s_imap_blocks field in super-block");
+ die("bad s_imap_blocks field in superblock");
if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1)
- die("bad s_zmap_blocks field in super-block");
+ die("bad s_zmap_blocks field in superblock");
}
static void read_tables(void)
{
- inode_map = xmalloc(IMAPS * BLOCK_SIZE);
- zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
- memset(inode_map, 0, sizeof(inode_map));
- memset(zone_map, 0, sizeof(zone_map));
+ inode_map = xzalloc(IMAPS * BLOCK_SIZE);
+ zone_map = xzalloc(ZMAPS * BLOCK_SIZE);
inode_buffer = xmalloc(INODE_BUFFER_SIZE);
inode_count = xmalloc(INODES + 1);
zone_count = xmalloc(ZONES);
- if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE))
- die("Unable to read inode map");
- if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE))
- die("Unable to read zone map");
- if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE))
- die("Unable to read inodes");
+ if (IMAPS * BLOCK_SIZE != read(dev_fd, inode_map, IMAPS * BLOCK_SIZE))
+ die("can't read inode map");
+ if (ZMAPS * BLOCK_SIZE != read(dev_fd, zone_map, ZMAPS * BLOCK_SIZE))
+ die("can't read zone map");
+ if (INODE_BUFFER_SIZE != read(dev_fd, inode_buffer, INODE_BUFFER_SIZE))
+ die("can't read inodes");
if (NORM_FIRSTZONE != FIRSTZONE) {
- printf("Warning: Firstzone != Norm_firstzone\n");
+ printf("warning: firstzone!=norm_firstzone\n");
errors_uncorrected = 1;
}
get_dirsize();
- if (show) {
- printf("%ld inodes\n", INODES);
- printf("%ld blocks\n", ZONES);
- printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
- printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
- printf("Maxsize=%ld\n", MAXSIZE);
- printf("Filesystem state=%d\n", Super.s_state);
- printf("namelen=%d\n\n", namelen);
+ if (OPT_show) {
+ printf("%u inodes\n"
+ "%u blocks\n"
+ "Firstdatazone=%u (%u)\n"
+ "Zonesize=%u\n"
+ "Maxsize=%u\n"
+ "Filesystem state=%u\n"
+ "namelen=%u\n\n",
+ INODES,
+ ZONES,
+ FIRSTZONE, NORM_FIRSTZONE,
+ BLOCK_SIZE << ZONESIZE,
+ MAXSIZE,
+ Super.s_state,
+ namelen);
}
}
-struct minix_inode *get_inode(unsigned int nr)
+static void get_inode_common(unsigned nr, uint16_t i_mode)
{
- struct minix_inode *inode;
-
- if (!nr || nr > INODES)
- return NULL;
total++;
- inode = Inode + nr;
if (!inode_count[nr]) {
if (!inode_in_use(nr)) {
- printf("Inode %d marked not used, but used for file '", nr);
- print_current_name();
- printf("'\n");
- if (repair) {
- if (ask("Mark in use", 1))
+ printf("Inode %u is marked as 'unused', but it is used "
+ "for file '%s'\n", nr, current_name);
+ if (OPT_repair) {
+ if (ask("Mark as 'in use'", 1))
mark_inode(nr);
- } else {
- errors_uncorrected = 1;
+ else
+ errors_uncorrected = 1;
}
}
- if (S_ISDIR(inode->i_mode))
+ if (S_ISDIR(i_mode))
directory++;
- else if (S_ISREG(inode->i_mode))
+ else if (S_ISREG(i_mode))
regular++;
- else if (S_ISCHR(inode->i_mode))
+ else if (S_ISCHR(i_mode))
chardev++;
- else if (S_ISBLK(inode->i_mode))
+ else if (S_ISBLK(i_mode))
blockdev++;
- else if (S_ISLNK(inode->i_mode))
+ else if (S_ISLNK(i_mode))
symlinks++;
- else if (S_ISSOCK(inode->i_mode));
- else if (S_ISFIFO(inode->i_mode));
+ else if (S_ISSOCK(i_mode));
+ else if (S_ISFIFO(i_mode));
else {
- print_current_name();
- printf(" has mode %05o\n", inode->i_mode);
+ printf("%s has mode %05o\n", current_name, i_mode);
}
-
} else
links++;
if (!++inode_count[nr]) {
- printf("Warning: inode count too big.\n");
+ printf("Warning: inode count too big\n");
inode_count[nr]--;
errors_uncorrected = 1;
}
+}
+
+static struct minix1_inode *get_inode(unsigned nr)
+{
+ struct minix1_inode *inode;
+
+ if (!nr || nr > INODES)
+ return NULL;
+ inode = Inode1 + nr;
+ get_inode_common(nr, inode->i_mode);
return inode;
}
-#ifdef BB_FEATURE_MINIX2
-struct minix2_inode *get_inode2(unsigned int nr)
+#if ENABLE_FEATURE_MINIX2
+static struct minix2_inode *get_inode2(unsigned nr)
{
struct minix2_inode *inode;
if (!nr || nr > INODES)
return NULL;
- total++;
inode = Inode2 + nr;
- if (!inode_count[nr]) {
- if (!inode_in_use(nr)) {
- printf("Inode %d marked not used, but used for file '", nr);
- print_current_name();
- printf("'\n");
- if (repair) {
- if (ask("Mark in use", 1))
- mark_inode(nr);
- else
- errors_uncorrected = 1;
- }
- }
- if (S_ISDIR(inode->i_mode))
- directory++;
- else if (S_ISREG(inode->i_mode))
- regular++;
- else if (S_ISCHR(inode->i_mode))
- chardev++;
- else if (S_ISBLK(inode->i_mode))
- blockdev++;
- else if (S_ISLNK(inode->i_mode))
- symlinks++;
- else if (S_ISSOCK(inode->i_mode));
- else if (S_ISFIFO(inode->i_mode));
- else {
- print_current_name();
- printf(" has mode %05o\n", inode->i_mode);
- }
- } else
- links++;
- if (!++inode_count[nr]) {
- printf("Warning: inode count too big.\n");
- inode_count[nr]--;
- errors_uncorrected = 1;
- }
+ get_inode_common(nr, inode->i_mode);
return inode;
}
#endif
static void check_root(void)
{
- struct minix_inode *inode = Inode + ROOT_INO;
+ struct minix1_inode *inode = Inode1 + MINIX_ROOT_INO;
if (!inode || !S_ISDIR(inode->i_mode))
die("root inode isn't a directory");
}
-#ifdef BB_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
static void check_root2(void)
{
- struct minix2_inode *inode = Inode2 + ROOT_INO;
+ struct minix2_inode *inode = Inode2 + MINIX_ROOT_INO;
if (!inode || !S_ISDIR(inode->i_mode))
die("root inode isn't a directory");
}
+#else
+void check_root2(void);
#endif
-static int add_zone(unsigned short *znr, int *corrected)
+static int add_zone_common(int block, smallint *corrected)
{
- int result;
- int block;
-
- result = 0;
- block = check_zone_nr(znr, corrected);
if (!block)
return 0;
if (zone_count[block]) {
- printf("Block has been used before. Now in file `");
- print_current_name();
- printf("'.");
+ printf("Already used block is reused in file '%s'. ",
+ current_name);
if (ask("Clear", 1)) {
- *znr = 0;
block = 0;
*corrected = 1;
+ return -1; /* "please zero out *znr" */
}
}
- if (!block)
- return 0;
if (!zone_in_use(block)) {
- printf("Block %d in file `", block);
- print_current_name();
- printf("' is marked not in use.");
+ printf("Block %d in file '%s' is marked as 'unused'. ",
+ block, current_name);
if (ask("Correct", 1))
mark_zone(block);
}
return block;
}
-#ifdef BB_FEATURE_MINIX2
-static int add_zone2(unsigned int *znr, int *corrected)
+static int add_zone(uint16_t *znr, smallint *corrected)
{
- int result;
int block;
- result = 0;
- block = check_zone_nr2(znr, corrected);
- if (!block)
- return 0;
- if (zone_count[block]) {
- printf("Block has been used before. Now in file `");
- print_current_name();
- printf("'.");
- if (ask("Clear", 1)) {
- *znr = 0;
- block = 0;
- *corrected = 1;
- }
+ block = check_zone_nr(znr, corrected);
+ block = add_zone_common(block, corrected);
+ if (block == -1) {
+ *znr = 0;
+ block = 0;
}
- if (!block)
- return 0;
- if (!zone_in_use(block)) {
- printf("Block %d in file `", block);
- print_current_name();
- printf("' is marked not in use.");
- if (ask("Correct", 1))
- mark_zone(block);
+ return block;
+}
+
+#if ENABLE_FEATURE_MINIX2
+static int add_zone2(uint32_t *znr, smallint *corrected)
+{
+ int block;
+
+ block = check_zone_nr2(znr, corrected);
+ block = add_zone_common(block, corrected);
+ if (block == -1) {
+ *znr = 0;
+ block = 0;
}
- if (!++zone_count[block])
- zone_count[block]--;
return block;
}
#endif
-static void add_zone_ind(unsigned short *znr, int *corrected)
+static void add_zone_ind(uint16_t *znr, smallint *corrected)
{
- static char blk[BLOCK_SIZE];
- int i, chg_blk = 0;
+ int i;
int block;
+ smallint chg_blk = 0;
block = add_zone(znr, corrected);
if (!block)
return;
- read_block(block, blk);
+ read_block(block, add_zone_ind_blk);
for (i = 0; i < (BLOCK_SIZE >> 1); i++)
- add_zone(i + (unsigned short *) blk, &chg_blk);
+ add_zone(i + (uint16_t *) add_zone_ind_blk, &chg_blk);
if (chg_blk)
- write_block(block, blk);
+ write_block(block, add_zone_ind_blk);
}
-#ifdef BB_FEATURE_MINIX2
-static void add_zone_ind2(unsigned int *znr, int *corrected)
+#if ENABLE_FEATURE_MINIX2
+static void add_zone_ind2(uint32_t *znr, smallint *corrected)
{
- static char blk[BLOCK_SIZE];
- int i, chg_blk = 0;
+ int i;
int block;
+ smallint chg_blk = 0;
block = add_zone2(znr, corrected);
if (!block)
return;
- read_block(block, blk);
+ read_block(block, add_zone_ind_blk);
for (i = 0; i < BLOCK_SIZE >> 2; i++)
- add_zone2(i + (unsigned int *) blk, &chg_blk);
+ add_zone2(i + (uint32_t *) add_zone_ind_blk, &chg_blk);
if (chg_blk)
- write_block(block, blk);
+ write_block(block, add_zone_ind_blk);
}
#endif
-static void add_zone_dind(unsigned short *znr, int *corrected)
+static void add_zone_dind(uint16_t *znr, smallint *corrected)
{
- static char blk[BLOCK_SIZE];
- int i, blk_chg = 0;
+ int i;
int block;
+ smallint chg_blk = 0;
block = add_zone(znr, corrected);
if (!block)
return;
- read_block(block, blk);
+ read_block(block, add_zone_dind_blk);
for (i = 0; i < (BLOCK_SIZE >> 1); i++)
- add_zone_ind(i + (unsigned short *) blk, &blk_chg);
- if (blk_chg)
- write_block(block, blk);
+ add_zone_ind(i + (uint16_t *) add_zone_dind_blk, &chg_blk);
+ if (chg_blk)
+ write_block(block, add_zone_dind_blk);
}
-#ifdef BB_FEATURE_MINIX2
-static void add_zone_dind2(unsigned int *znr, int *corrected)
+#if ENABLE_FEATURE_MINIX2
+static void add_zone_dind2(uint32_t *znr, smallint *corrected)
{
- static char blk[BLOCK_SIZE];
- int i, blk_chg = 0;
+ int i;
int block;
+ smallint chg_blk = 0;
block = add_zone2(znr, corrected);
if (!block)
return;
- read_block(block, blk);
+ read_block(block, add_zone_dind_blk);
for (i = 0; i < BLOCK_SIZE >> 2; i++)
- add_zone_ind2(i + (unsigned int *) blk, &blk_chg);
- if (blk_chg)
- write_block(block, blk);
+ add_zone_ind2(i + (uint32_t *) add_zone_dind_blk, &chg_blk);
+ if (chg_blk)
+ write_block(block, add_zone_dind_blk);
}
-static void add_zone_tind2(unsigned int *znr, int *corrected)
+static void add_zone_tind2(uint32_t *znr, smallint *corrected)
{
- static char blk[BLOCK_SIZE];
- int i, blk_chg = 0;
+ int i;
int block;
+ smallint chg_blk = 0;
block = add_zone2(znr, corrected);
if (!block)
return;
- read_block(block, blk);
+ read_block(block, add_zone_tind_blk);
for (i = 0; i < BLOCK_SIZE >> 2; i++)
- add_zone_dind2(i + (unsigned int *) blk, &blk_chg);
- if (blk_chg)
- write_block(block, blk);
+ add_zone_dind2(i + (uint32_t *) add_zone_tind_blk, &chg_blk);
+ if (chg_blk)
+ write_block(block, add_zone_tind_blk);
}
#endif
-static void check_zones(unsigned int i)
+static void check_zones(unsigned i)
{
- struct minix_inode *inode;
+ struct minix1_inode *inode;
if (!i || i > INODES)
return;
if (inode_count[i] > 1) /* have we counted this file already? */
return;
- inode = Inode + i;
- if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
- !S_ISLNK(inode->i_mode)) return;
+ inode = Inode1 + i;
+ if (!S_ISDIR(inode->i_mode)
+ && !S_ISREG(inode->i_mode)
+ && !S_ISLNK(inode->i_mode)
+ ) {
+ return;
+ }
for (i = 0; i < 7; i++)
add_zone(i + inode->i_zone, &changed);
add_zone_ind(7 + inode->i_zone, &changed);
add_zone_dind(8 + inode->i_zone, &changed);
}
-#ifdef BB_FEATURE_MINIX2
-static void check_zones2(unsigned int i)
+#if ENABLE_FEATURE_MINIX2
+static void check_zones2(unsigned i)
{
struct minix2_inode *inode;
}
#endif
-static void check_file(struct minix_inode *dir, unsigned int offset)
+static void check_file(struct minix1_inode *dir, unsigned offset)
{
- static char blk[BLOCK_SIZE];
- struct minix_inode *inode;
+ struct minix1_inode *inode;
int ino;
char *name;
int block;
block = map_block(dir, offset / BLOCK_SIZE);
- read_block(block, blk);
- name = blk + (offset % BLOCK_SIZE) + 2;
- ino = *(unsigned short *) (name - 2);
+ read_block(block, check_file_blk);
+ name = check_file_blk + (offset % BLOCK_SIZE) + 2;
+ ino = *(uint16_t *) (name - 2);
if (ino > INODES) {
- print_current_name();
- printf(" contains a bad inode number for file '");
- printf("%.*s'.", namelen, name);
- if (ask(" Remove", 1)) {
- *(unsigned short *) (name - 2) = 0;
- write_block(block, blk);
+ printf("%s contains a bad inode number for file '%.*s'. ",
+ current_name, namelen, name);
+ if (ask("Remove", 1)) {
+ *(uint16_t *) (name - 2) = 0;
+ write_block(block, check_file_blk);
}
ino = 0;
}
- if (name_depth < MAX_DEPTH)
- strncpy(name_list[name_depth], name, namelen);
- name_depth++;
+ push_filename(name);
inode = get_inode(ino);
- name_depth--;
+ pop_filename();
if (!offset) {
- if (!inode || strcmp(".", name)) {
- print_current_name();
- printf(": bad directory: '.' isn't first\n");
- errors_uncorrected = 1;
- } else
+ if (inode && LONE_CHAR(name, '.'))
return;
+ printf("%s: bad directory: '.' isn't first\n", current_name);
+ errors_uncorrected = 1;
}
if (offset == dirsize) {
- if (!inode || strcmp("..", name)) {
- print_current_name();
- printf(": bad directory: '..' isn't second\n");
- errors_uncorrected = 1;
- } else
+ if (inode && strcmp("..", name) == 0)
return;
+ printf("%s: bad directory: '..' isn't second\n", current_name);
+ errors_uncorrected = 1;
}
if (!inode)
return;
- if (name_depth < MAX_DEPTH)
- strncpy(name_list[name_depth], name, namelen);
- name_depth++;
- if (list) {
- if (verbose)
+ push_filename(name);
+ if (OPT_list) {
+ if (OPT_verbose)
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
- print_current_name();
- if (S_ISDIR(inode->i_mode))
- printf(":\n");
- else
- printf("\n");
+ printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : "");
}
check_zones(ino);
if (inode && S_ISDIR(inode->i_mode))
recursive_check(ino);
- name_depth--;
- return;
+ pop_filename();
}
-#ifdef BB_FEATURE_MINIX2
-static void check_file2(struct minix2_inode *dir, unsigned int offset)
+#if ENABLE_FEATURE_MINIX2
+static void check_file2(struct minix2_inode *dir, unsigned offset)
{
- static char blk[BLOCK_SIZE];
struct minix2_inode *inode;
int ino;
char *name;
int block;
block = map_block2(dir, offset / BLOCK_SIZE);
- read_block(block, blk);
- name = blk + (offset % BLOCK_SIZE) + 2;
- ino = *(unsigned short *) (name - 2);
+ read_block(block, check_file_blk);
+ name = check_file_blk + (offset % BLOCK_SIZE) + 2;
+ ino = *(uint16_t *) (name - 2);
if (ino > INODES) {
- print_current_name();
- printf(" contains a bad inode number for file '");
- printf("%.*s'.", namelen, name);
- if (ask(" Remove", 1)) {
- *(unsigned short *) (name - 2) = 0;
- write_block(block, blk);
+ printf("%s contains a bad inode number for file '%.*s'. ",
+ current_name, namelen, name);
+ if (ask("Remove", 1)) {
+ *(uint16_t *) (name - 2) = 0;
+ write_block(block, check_file_blk);
}
ino = 0;
}
- if (name_depth < MAX_DEPTH)
- strncpy(name_list[name_depth], name, namelen);
- name_depth++;
+ push_filename(name);
inode = get_inode2(ino);
- name_depth--;
+ pop_filename();
if (!offset) {
- if (!inode || strcmp(".", name)) {
- print_current_name();
- printf(": bad directory: '.' isn't first\n");
- errors_uncorrected = 1;
- } else
+ if (inode && LONE_CHAR(name, '.'))
return;
+ printf("%s: bad directory: '.' isn't first\n", current_name);
+ errors_uncorrected = 1;
}
if (offset == dirsize) {
- if (!inode || strcmp("..", name)) {
- print_current_name();
- printf(": bad directory: '..' isn't second\n");
- errors_uncorrected = 1;
- } else
+ if (inode && strcmp("..", name) == 0)
return;
+ printf("%s: bad directory: '..' isn't second\n", current_name);
+ errors_uncorrected = 1;
}
if (!inode)
return;
- name_depth++;
- if (list) {
- if (verbose)
+ push_filename(name);
+ if (OPT_list) {
+ if (OPT_verbose)
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
- print_current_name();
- if (S_ISDIR(inode->i_mode))
- printf(":\n");
- else
- printf("\n");
+ printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : "");
}
check_zones2(ino);
if (inode && S_ISDIR(inode->i_mode))
recursive_check2(ino);
- name_depth--;
- return;
+ pop_filename();
}
#endif
-static void recursive_check(unsigned int ino)
+static void recursive_check(unsigned ino)
{
- struct minix_inode *dir;
- unsigned int offset;
+ struct minix1_inode *dir;
+ unsigned offset;
- dir = Inode + ino;
+ dir = Inode1 + ino;
if (!S_ISDIR(dir->i_mode))
die("internal error");
if (dir->i_size < 2 * dirsize) {
- print_current_name();
- printf(": bad directory: size<32");
+ printf("%s: bad directory: size<32", current_name);
errors_uncorrected = 1;
}
for (offset = 0; offset < dir->i_size; offset += dirsize)
check_file(dir, offset);
}
-#ifdef BB_FEATURE_MINIX2
-static void recursive_check2(unsigned int ino)
+#if ENABLE_FEATURE_MINIX2
+static void recursive_check2(unsigned ino)
{
struct minix2_inode *dir;
- unsigned int offset;
+ unsigned offset;
dir = Inode2 + ino;
if (!S_ISDIR(dir->i_mode))
die("internal error");
if (dir->i_size < 2 * dirsize) {
- print_current_name();
- printf(": bad directory: size < 32");
+ printf("%s: bad directory: size<32", current_name);
errors_uncorrected = 1;
}
for (offset = 0; offset < dir->i_size; offset += dirsize)
static int bad_zone(int i)
{
- char buffer[1024];
+ char buffer[BLOCK_SIZE];
- if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET))
- die("seek failed in bad_zone");
- return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
+ xlseek(dev_fd, BLOCK_SIZE * i, SEEK_SET);
+ return (BLOCK_SIZE != full_read(dev_fd, buffer, BLOCK_SIZE));
}
static void check_counts(void)
int i;
for (i = 1; i <= INODES; i++) {
- if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
- printf("Inode %d mode not cleared.", i);
+ if (OPT_warn_mode && Inode1[i].i_mode && !inode_in_use(i)) {
+ printf("Inode %d has non-zero mode. ", i);
if (ask("Clear", 1)) {
- Inode[i].i_mode = 0;
+ Inode1[i].i_mode = 0;
changed = 1;
}
}
if (!inode_count[i]) {
if (!inode_in_use(i))
continue;
- printf("Inode %d not used, marked used in the bitmap.", i);
+ printf("Unused inode %d is marked as 'used' in the bitmap. ", i);
if (ask("Clear", 1))
unmark_inode(i);
continue;
}
if (!inode_in_use(i)) {
- printf("Inode %d used, marked unused in the bitmap.", i);
+ printf("Inode %d is used, but marked as 'unused' in the bitmap. ", i);
if (ask("Set", 1))
mark_inode(i);
}
- if (Inode[i].i_nlinks != inode_count[i]) {
- printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
- i, Inode[i].i_mode, Inode[i].i_nlinks, inode_count[i]);
+ if (Inode1[i].i_nlinks != inode_count[i]) {
+ printf("Inode %d (mode=%07o), i_nlinks=%d, counted=%d. ",
+ i, Inode1[i].i_mode, Inode1[i].i_nlinks,
+ inode_count[i]);
if (ask("Set i_nlinks to count", 1)) {
- Inode[i].i_nlinks = inode_count[i];
+ Inode1[i].i_nlinks = inode_count[i];
changed = 1;
}
}
}
for (i = FIRSTZONE; i < ZONES; i++) {
- if (zone_in_use(i) == zone_count[i])
+ if ((zone_in_use(i) != 0) == zone_count[i])
continue;
if (!zone_count[i]) {
if (bad_zone(i))
continue;
- printf("Zone %d: marked in use, no file uses it.", i);
+ printf("Zone %d is marked 'in use', but no file uses it. ", i);
if (ask("Unmark", 1))
unmark_zone(i);
continue;
}
printf("Zone %d: %sin use, counted=%d\n",
- i, zone_in_use(i) ? "" : "not ", zone_count[i]);
+ i, zone_in_use(i) ? "" : "not ", zone_count[i]);
}
}
-#ifdef BB_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
static void check_counts2(void)
{
int i;
for (i = 1; i <= INODES; i++) {
- if (!inode_in_use(i) && Inode2[i].i_mode && warn_mode) {
- printf("Inode %d mode not cleared.", i);
+ if (OPT_warn_mode && Inode2[i].i_mode && !inode_in_use(i)) {
+ printf("Inode %d has non-zero mode. ", i);
if (ask("Clear", 1)) {
Inode2[i].i_mode = 0;
changed = 1;
if (!inode_count[i]) {
if (!inode_in_use(i))
continue;
- printf("Inode %d not used, marked used in the bitmap.", i);
+ printf("Unused inode %d is marked as 'used' in the bitmap. ", i);
if (ask("Clear", 1))
unmark_inode(i);
continue;
}
if (!inode_in_use(i)) {
- printf("Inode %d used, marked unused in the bitmap.", i);
+ printf("Inode %d is used, but marked as 'unused' in the bitmap. ", i);
if (ask("Set", 1))
mark_inode(i);
}
if (Inode2[i].i_nlinks != inode_count[i]) {
- printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
- i, Inode2[i].i_mode, Inode2[i].i_nlinks,
- inode_count[i]);
+ printf("Inode %d (mode=%07o), i_nlinks=%d, counted=%d. ",
+ i, Inode2[i].i_mode, Inode2[i].i_nlinks,
+ inode_count[i]);
if (ask("Set i_nlinks to count", 1)) {
Inode2[i].i_nlinks = inode_count[i];
changed = 1;
}
}
for (i = FIRSTZONE; i < ZONES; i++) {
- if (zone_in_use(i) == zone_count[i])
+ if ((zone_in_use(i) != 0) == zone_count[i])
continue;
if (!zone_count[i]) {
if (bad_zone(i))
continue;
- printf("Zone %d: marked in use, no file uses it.", i);
+ printf("Zone %d is marked 'in use', but no file uses it. ", i);
if (ask("Unmark", 1))
unmark_zone(i);
continue;
}
printf("Zone %d: %sin use, counted=%d\n",
- i, zone_in_use(i) ? "" : "not ", zone_count[i]);
+ i, zone_in_use(i) ? "" : "not ", zone_count[i]);
}
}
#endif
{
memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
memset(zone_count, 0, ZONES * sizeof(*zone_count));
- check_zones(ROOT_INO);
- recursive_check(ROOT_INO);
+ check_zones(MINIX_ROOT_INO);
+ recursive_check(MINIX_ROOT_INO);
check_counts();
}
-#ifdef BB_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
static void check2(void)
{
memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
memset(zone_count, 0, ZONES * sizeof(*zone_count));
- check_zones2(ROOT_INO);
- recursive_check2(ROOT_INO);
+ check_zones2(MINIX_ROOT_INO);
+ recursive_check2(MINIX_ROOT_INO);
check_counts2();
}
+#else
+void check2(void);
#endif
-/* Wed Feb 9 15:17:06 MST 2000 */
-/* dynamically allocate name_list (instead of making it static) */
-static void alloc_name_list(void)
-{
- int i;
-
- name_list = xmalloc(sizeof(char *) * MAX_DEPTH);
- for (i = 0; i < MAX_DEPTH; i++)
- name_list[i] = xmalloc(sizeof(char) * BUFSIZ + 1);
-}
-
-#ifdef BB_FEATURE_CLEAN_UP
-/* execute this atexit() to deallocate name_list[] */
-/* piptigger was here */
-static void free_name_list(void)
-{
- int i;
-
- if (name_list) {
- for (i = 0; i < MAX_DEPTH; i++) {
- if (name_list[i]) {
- free(name_list[i]);
- }
- }
- free(name_list);
- }
-}
-#endif
-
-extern int fsck_minix_main(int argc, char **argv)
+int fsck_minix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int fsck_minix_main(int argc UNUSED_PARAM, char **argv)
{
struct termios tmp;
- int count;
int retcode = 0;
- alloc_name_list();
-#ifdef BB_FEATURE_CLEAN_UP
- /* Don't bother to free memory. Exit does
- * that automagically, so we can save a few bytes */
- atexit(free_name_list);
-#endif
+ xfunc_error_retval = 8;
- if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad inode size");
-#ifdef BB_FEATURE_MINIX2
- if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad v2 inode size");
-#endif
- while (argc-- > 1) {
- argv++;
- if (argv[0][0] != '-') {
- if (device_name)
- show_usage();
- else
- device_name = argv[0];
- } else
- while (*++argv[0])
- switch (argv[0][0]) {
- case 'l':
- list = 1;
- break;
- case 'a':
- automatic = 1;
- repair = 1;
- break;
- case 'r':
- automatic = 0;
- repair = 1;
- break;
- case 'v':
- verbose = 1;
- break;
- case 's':
- show = 1;
- break;
- case 'm':
- warn_mode = 1;
- break;
- case 'f':
- force = 1;
- break;
- default:
- show_usage();
- }
- }
- if (!device_name)
- show_usage();
- check_mount(); /* trying to check a mounted filesystem? */
- if (repair && !automatic) {
+ INIT_G();
+
+ opt_complementary = "=1:ar"; /* one argument; -a assumes -r */
+ getopt32(argv, OPTION_STR);
+ argv += optind;
+ device_name = argv[0];
+
+ check_mount(); /* trying to check a mounted filesystem? */
+ if (OPT_manual) {
if (!isatty(0) || !isatty(1))
die("need terminal for interactive repairs");
}
- IN = open(device_name, repair ? O_RDWR : O_RDONLY);
- if (IN < 0){
- fprintf(stderr,"unable to open device '%s'.\n",device_name);
- leave(8);
- }
- for (count = 0; count < 3; count++)
- sync();
+ xmove_fd(xopen(device_name, OPT_repair ? O_RDWR : O_RDONLY), dev_fd);
+
+ /*sync(); paranoia? */
read_superblock();
/*
* Determine whether or not we should continue with the checking.
* This is based on the status of the filesystem valid and error
- * flags and whether or not the -f switch was specified on the
+ * flags and whether or not the -f switch was specified on the
* command line.
*/
- printf("%s, %s\n", applet_name, program_version);
- if (!(Super.s_state & MINIX_ERROR_FS) &&
- (Super.s_state & MINIX_VALID_FS) && !force) {
- if (repair)
- printf("%s is clean, no check.\n", device_name);
- return retcode;
- } else if (force)
- printf("Forcing filesystem check on %s.\n", device_name);
- else if (repair)
- printf("Filesystem on %s is dirty, needs checking.\n",
- device_name);
+ printf("%s: %s\n", applet_name, bb_banner);
+
+ if (!(Super.s_state & MINIX_ERROR_FS)
+ && (Super.s_state & MINIX_VALID_FS) && !OPT_force
+ ) {
+ if (OPT_repair)
+ printf("%s is clean, check is skipped\n", device_name);
+ return 0;
+ } else if (OPT_force)
+ printf("Forcing filesystem check on %s\n", device_name);
+ else if (OPT_repair)
+ printf("Filesystem on %s is dirty, needs checking\n",
+ device_name);
read_tables();
- if (repair && !automatic) {
- tcgetattr(0, &termios);
- tmp = termios;
+ if (OPT_manual) {
+ tcgetattr(0, &sv_termios);
+ tmp = sv_termios;
tmp.c_lflag &= ~(ICANON | ECHO);
- tcsetattr(0, TCSANOW, &tmp);
+ tcsetattr_stdin_TCSANOW(&tmp);
termios_set = 1;
}
-#ifdef BB_FEATURE_MINIX2
+
if (version2) {
check_root2();
check2();
- } else
-#endif
- {
+ } else {
check_root();
check();
}
- if (verbose) {
- int i, free;
- for (i = 1, free = 0; i <= INODES; i++)
+ if (OPT_verbose) {
+ int i, free_cnt;
+
+ for (i = 1, free_cnt = 0; i <= INODES; i++)
if (!inode_in_use(i))
- free++;
- printf("\n%6ld inodes used (%ld%%)\n", (INODES - free),
- 100 * (INODES - free) / INODES);
- for (i = FIRSTZONE, free = 0; i < ZONES; i++)
+ free_cnt++;
+ printf("\n%6u inodes used (%u%%)\n", (INODES - free_cnt),
+ 100 * (INODES - free_cnt) / INODES);
+ for (i = FIRSTZONE, free_cnt = 0; i < ZONES; i++)
if (!zone_in_use(i))
- free++;
- printf("%6ld zones used (%ld%%)\n", (ZONES - free),
- 100 * (ZONES - free) / ZONES);
- printf("\n%6d regular files\n"
- "%6d directories\n"
- "%6d character device files\n"
- "%6d block device files\n"
- "%6d links\n"
- "%6d symbolic links\n"
- "------\n"
- "%6d files\n",
- regular, directory, chardev, blockdev,
- links - 2 * directory + 1, symlinks,
- total - 2 * directory + 1);
+ free_cnt++;
+ printf("%6u zones used (%u%%)\n\n"
+ "%6u regular files\n"
+ "%6u directories\n"
+ "%6u character device files\n"
+ "%6u block device files\n"
+ "%6u links\n"
+ "%6u symbolic links\n"
+ "------\n"
+ "%6u files\n",
+ (ZONES - free_cnt), 100 * (ZONES - free_cnt) / ZONES,
+ regular, directory, chardev, blockdev,
+ links - 2 * directory + 1, symlinks,
+ total - 2 * directory + 1);
}
if (changed) {
write_tables();
- printf("----------------------------\n"
- "FILE SYSTEM HAS BEEN CHANGED\n"
- "----------------------------\n");
- for (count = 0; count < 3; count++)
- sync();
- } else if (repair)
- write_super_block();
-
- if (repair && !automatic)
- tcsetattr(0, TCSANOW, &termios);
+ printf("FILE SYSTEM HAS BEEN CHANGED\n");
+ sync();
+ } else if (OPT_repair)
+ write_superblock();
+
+ if (OPT_manual)
+ tcsetattr_stdin_TCSANOW(&sv_termios);
if (changed)
retcode += 3;
projects / platform / upstream / busybox.git / blobdiff