-/*-
- * Copyright (c) 2003-2007 Tim Kientzle
- * Copyright (c) 2011-2012 Michihiro NAKAJIMA
- * All rights reserved.
- *
- * 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, this list of conditions and the following disclaimer.
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR(S) 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 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "archive_platform.h"
-__FBSDID("$FreeBSD: head/lib/libarchive/archive_write_set_format_cpio.c 201170 2009-12-29 06:34:23Z kientzle $");
-
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <stdio.h>
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
#include "archive.h"
-#include "archive_entry.h"
-#include "archive_entry_locale.h"
-#include "archive_private.h"
-#include "archive_write_private.h"
-#include "archive_write_set_format_private.h"
-
-static ssize_t archive_write_cpio_data(struct archive_write *,
- const void *buff, size_t s);
-static int archive_write_cpio_close(struct archive_write *);
-static int archive_write_cpio_free(struct archive_write *);
-static int archive_write_cpio_finish_entry(struct archive_write *);
-static int archive_write_cpio_header(struct archive_write *,
- struct archive_entry *);
-static int archive_write_cpio_options(struct archive_write *,
- const char *, const char *);
-static int format_octal(int64_t, void *, int);
-static int64_t format_octal_recursive(int64_t, char *, int);
-static int write_header(struct archive_write *, struct archive_entry *);
-
-struct cpio {
- uint64_t entry_bytes_remaining;
-
- int64_t ino_next;
-
- struct { int64_t old; int new;} *ino_list;
- size_t ino_list_size;
- size_t ino_list_next;
-
- struct archive_string_conv *opt_sconv;
- struct archive_string_conv *sconv_default;
- int init_default_conversion;
-};
-
-#define c_magic_offset 0
-#define c_magic_size 6
-#define c_dev_offset 6
-#define c_dev_size 6
-#define c_ino_offset 12
-#define c_ino_size 6
-#define c_mode_offset 18
-#define c_mode_size 6
-#define c_uid_offset 24
-#define c_uid_size 6
-#define c_gid_offset 30
-#define c_gid_size 6
-#define c_nlink_offset 36
-#define c_nlink_size 6
-#define c_rdev_offset 42
-#define c_rdev_size 6
-#define c_mtime_offset 48
-#define c_mtime_size 11
-#define c_namesize_offset 59
-#define c_namesize_size 6
-#define c_filesize_offset 65
-#define c_filesize_size 11
/*
- * Set output format to 'cpio' format.
+ * Set output format to the default 'cpio' format.
*/
int
archive_write_set_format_cpio(struct archive *_a)
{
- struct archive_write *a = (struct archive_write *)_a;
- struct cpio *cpio;
-
- archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
- ARCHIVE_STATE_NEW, "archive_write_set_format_cpio");
-
- /* If someone else was already registered, unregister them. */
- if (a->format_free != NULL)
- (a->format_free)(a);
-
- cpio = (struct cpio *)calloc(1, sizeof(*cpio));
- if (cpio == NULL) {
- archive_set_error(&a->archive, ENOMEM, "Can't allocate cpio data");
- return (ARCHIVE_FATAL);
- }
- a->format_data = cpio;
- a->format_name = "cpio";
- a->format_options = archive_write_cpio_options;
- a->format_write_header = archive_write_cpio_header;
- a->format_write_data = archive_write_cpio_data;
- a->format_finish_entry = archive_write_cpio_finish_entry;
- a->format_close = archive_write_cpio_close;
- a->format_free = archive_write_cpio_free;
- a->archive.archive_format = ARCHIVE_FORMAT_CPIO_POSIX;
- a->archive.archive_format_name = "POSIX cpio";
- return (ARCHIVE_OK);
-}
-
-static int
-archive_write_cpio_options(struct archive_write *a, const char *key,
- const char *val)
-{
- struct cpio *cpio = (struct cpio *)a->format_data;
- int ret = ARCHIVE_FAILED;
-
- if (strcmp(key, "hdrcharset") == 0) {
- if (val == NULL || val[0] == 0)
- archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
- "%s: hdrcharset option needs a character-set name",
- a->format_name);
- else {
- cpio->opt_sconv = archive_string_conversion_to_charset(
- &a->archive, val, 0);
- if (cpio->opt_sconv != NULL)
- ret = ARCHIVE_OK;
- else
- ret = ARCHIVE_FATAL;
- }
- return (ret);
- }
-
- /* Note: The "warn" return is just to inform the options
- * supervisor that we didn't handle it. It will generate
- * a suitable error if no one used this option. */
- return (ARCHIVE_WARN);
-}
-
-/*
- * Ino values are as long as 64 bits on some systems; cpio format
- * only allows 18 bits and relies on the ino values to identify hardlinked
- * files. So, we can't merely "hash" the ino numbers since collisions
- * would corrupt the archive. Instead, we generate synthetic ino values
- * to store in the archive and maintain a map of original ino values to
- * synthetic ones so we can preserve hardlink information.
- *
- * TODO: Make this more efficient. It's not as bad as it looks (most
- * files don't have any hardlinks and we don't do any work here for those),
- * but it wouldn't be hard to do better.
- *
- * TODO: Work with dev/ino pairs here instead of just ino values.
- */
-static int
-synthesize_ino_value(struct cpio *cpio, struct archive_entry *entry)
-{
- int64_t ino = archive_entry_ino64(entry);
- int ino_new;
- size_t i;
-
- /*
- * If no index number was given, don't assign one. In
- * particular, this handles the end-of-archive marker
- * correctly by giving it a zero index value. (This is also
- * why we start our synthetic index numbers with one below.)
- */
- if (ino == 0)
- return (0);
-
- /* Don't store a mapping if we don't need to. */
- if (archive_entry_nlink(entry) < 2) {
- return (int)(++cpio->ino_next);
- }
-
- /* Look up old ino; if we have it, this is a hardlink
- * and we reuse the same value. */
- for (i = 0; i < cpio->ino_list_next; ++i) {
- if (cpio->ino_list[i].old == ino)
- return (cpio->ino_list[i].new);
- }
-
- /* Assign a new index number. */
- ino_new = (int)(++cpio->ino_next);
-
- /* Ensure space for the new mapping. */
- if (cpio->ino_list_size <= cpio->ino_list_next) {
- size_t newsize = cpio->ino_list_size < 512
- ? 512 : cpio->ino_list_size * 2;
- void *newlist = realloc(cpio->ino_list,
- sizeof(cpio->ino_list[0]) * newsize);
- if (newlist == NULL)
- return (-1);
-
- cpio->ino_list_size = newsize;
- cpio->ino_list = newlist;
- }
-
- /* Record and return the new value. */
- cpio->ino_list[cpio->ino_list_next].old = ino;
- cpio->ino_list[cpio->ino_list_next].new = ino_new;
- ++cpio->ino_list_next;
- return (ino_new);
-}
-
-
-static struct archive_string_conv *
-get_sconv(struct archive_write *a)
-{
- struct cpio *cpio;
- struct archive_string_conv *sconv;
-
- cpio = (struct cpio *)a->format_data;
- sconv = cpio->opt_sconv;
- if (sconv == NULL) {
- if (!cpio->init_default_conversion) {
- cpio->sconv_default =
- archive_string_default_conversion_for_write(
- &(a->archive));
- cpio->init_default_conversion = 1;
- }
- sconv = cpio->sconv_default;
- }
- return (sconv);
-}
-
-static int
-archive_write_cpio_header(struct archive_write *a, struct archive_entry *entry)
-{
- const char *path;
- size_t len;
-
- if (archive_entry_filetype(entry) == 0 && archive_entry_hardlink(entry) == NULL) {
- archive_set_error(&a->archive, -1, "Filetype required");
- return (ARCHIVE_FAILED);
- }
-
- if (archive_entry_pathname_l(entry, &path, &len, get_sconv(a)) != 0
- && errno == ENOMEM) {
- archive_set_error(&a->archive, ENOMEM,
- "Can't allocate memory for Pathname");
- return (ARCHIVE_FATAL);
- }
- if (len == 0 || path == NULL || path[0] == '\0') {
- archive_set_error(&a->archive, -1, "Pathname required");
- return (ARCHIVE_FAILED);
- }
-
- if (!archive_entry_size_is_set(entry) || archive_entry_size(entry) < 0) {
- archive_set_error(&a->archive, -1, "Size required");
- return (ARCHIVE_FAILED);
- }
- return write_header(a, entry);
-}
-
-static int
-write_header(struct archive_write *a, struct archive_entry *entry)
-{
- struct cpio *cpio;
- const char *p, *path;
- int pathlength, ret, ret_final;
- int64_t ino;
- char h[76];
- struct archive_string_conv *sconv;
- struct archive_entry *entry_main;
- size_t len;
-
- cpio = (struct cpio *)a->format_data;
- ret_final = ARCHIVE_OK;
- sconv = get_sconv(a);
-
-#if defined(_WIN32) && !defined(__CYGWIN__)
- /* Make sure the path separators in pathname, hardlink and symlink
- * are all slash '/', not the Windows path separator '\'. */
- entry_main = __la_win_entry_in_posix_pathseparator(entry);
- if (entry_main == NULL) {
- archive_set_error(&a->archive, ENOMEM,
- "Can't allocate ustar data");
- return(ARCHIVE_FATAL);
- }
- if (entry != entry_main)
- entry = entry_main;
- else
- entry_main = NULL;
-#else
- entry_main = NULL;
-#endif
-
- ret = archive_entry_pathname_l(entry, &path, &len, sconv);
- if (ret != 0) {
- if (errno == ENOMEM) {
- archive_set_error(&a->archive, ENOMEM,
- "Can't allocate memory for Pathname");
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- }
- archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
- "Can't translate pathname '%s' to %s",
- archive_entry_pathname(entry),
- archive_string_conversion_charset_name(sconv));
- ret_final = ARCHIVE_WARN;
- }
- /* Include trailing null. */
- pathlength = (int)len + 1;
-
- memset(h, 0, sizeof(h));
- format_octal(070707, h + c_magic_offset, c_magic_size);
- format_octal(archive_entry_dev(entry), h + c_dev_offset, c_dev_size);
-
- ino = synthesize_ino_value(cpio, entry);
- if (ino < 0) {
- archive_set_error(&a->archive, ENOMEM,
- "No memory for ino translation table");
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- } else if (ino > 0777777) {
- archive_set_error(&a->archive, ERANGE,
- "Too many files for this cpio format");
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- }
- format_octal(ino & 0777777, h + c_ino_offset, c_ino_size);
-
- /* TODO: Set ret_final to ARCHIVE_WARN if any of these overflow. */
- format_octal(archive_entry_mode(entry), h + c_mode_offset, c_mode_size);
- format_octal(archive_entry_uid(entry), h + c_uid_offset, c_uid_size);
- format_octal(archive_entry_gid(entry), h + c_gid_offset, c_gid_size);
- format_octal(archive_entry_nlink(entry), h + c_nlink_offset, c_nlink_size);
- if (archive_entry_filetype(entry) == AE_IFBLK
- || archive_entry_filetype(entry) == AE_IFCHR)
- format_octal(archive_entry_rdev(entry), h + c_rdev_offset, c_rdev_size);
- else
- format_octal(0, h + c_rdev_offset, c_rdev_size);
- format_octal(archive_entry_mtime(entry), h + c_mtime_offset, c_mtime_size);
- format_octal(pathlength, h + c_namesize_offset, c_namesize_size);
-
- /* Non-regular files don't store bodies. */
- if (archive_entry_filetype(entry) != AE_IFREG)
- archive_entry_set_size(entry, 0);
-
- /* Symlinks get the link written as the body of the entry. */
- ret = archive_entry_symlink_l(entry, &p, &len, sconv);
- if (ret != 0) {
- if (errno == ENOMEM) {
- archive_set_error(&a->archive, ENOMEM,
- "Can't allocate memory for Linkname");
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- }
- archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
- "Can't translate linkname '%s' to %s",
- archive_entry_symlink(entry),
- archive_string_conversion_charset_name(sconv));
- ret_final = ARCHIVE_WARN;
- }
- if (len > 0 && p != NULL && *p != '\0')
- ret = format_octal(strlen(p), h + c_filesize_offset,
- c_filesize_size);
- else
- ret = format_octal(archive_entry_size(entry),
- h + c_filesize_offset, c_filesize_size);
- if (ret) {
- archive_set_error(&a->archive, ERANGE,
- "File is too large for cpio format.");
- ret_final = ARCHIVE_FAILED;
- goto exit_write_header;
- }
-
- ret = __archive_write_output(a, h, sizeof(h));
- if (ret != ARCHIVE_OK) {
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- }
-
- ret = __archive_write_output(a, path, pathlength);
- if (ret != ARCHIVE_OK) {
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- }
-
- cpio->entry_bytes_remaining = archive_entry_size(entry);
-
- /* Write the symlink now. */
- if (p != NULL && *p != '\0') {
- ret = __archive_write_output(a, p, strlen(p));
- if (ret != ARCHIVE_OK) {
- ret_final = ARCHIVE_FATAL;
- goto exit_write_header;
- }
- }
-exit_write_header:
- archive_entry_free(entry_main);
- return (ret_final);
-}
-
-static ssize_t
-archive_write_cpio_data(struct archive_write *a, const void *buff, size_t s)
-{
- struct cpio *cpio;
- int ret;
-
- cpio = (struct cpio *)a->format_data;
- if (s > cpio->entry_bytes_remaining)
- s = (size_t)cpio->entry_bytes_remaining;
-
- ret = __archive_write_output(a, buff, s);
- cpio->entry_bytes_remaining -= s;
- if (ret >= 0)
- return (s);
- else
- return (ret);
-}
-
-/*
- * Format a number into the specified field.
- */
-static int
-format_octal(int64_t v, void *p, int digits)
-{
- int64_t max;
- int ret;
-
- max = (((int64_t)1) << (digits * 3)) - 1;
- if (v >= 0 && v <= max) {
- format_octal_recursive(v, (char *)p, digits);
- ret = 0;
- } else {
- format_octal_recursive(max, (char *)p, digits);
- ret = -1;
- }
- return (ret);
-}
-
-static int64_t
-format_octal_recursive(int64_t v, char *p, int s)
-{
- if (s == 0)
- return (v);
- v = format_octal_recursive(v, p+1, s-1);
- *p = '0' + ((char)v & 7);
- return (v >> 3);
-}
-
-static int
-archive_write_cpio_close(struct archive_write *a)
-{
- int er;
- struct archive_entry *trailer;
-
- trailer = archive_entry_new2(NULL);
- /* nlink = 1 here for GNU cpio compat. */
- archive_entry_set_nlink(trailer, 1);
- archive_entry_set_size(trailer, 0);
- archive_entry_set_pathname(trailer, "TRAILER!!!");
- er = write_header(a, trailer);
- archive_entry_free(trailer);
- return (er);
-}
-
-static int
-archive_write_cpio_free(struct archive_write *a)
-{
- struct cpio *cpio;
-
- cpio = (struct cpio *)a->format_data;
- free(cpio->ino_list);
- free(cpio);
- a->format_data = NULL;
- return (ARCHIVE_OK);
-}
-
-static int
-archive_write_cpio_finish_entry(struct archive_write *a)
-{
- struct cpio *cpio;
-
- cpio = (struct cpio *)a->format_data;
- return (__archive_write_nulls(a,
- (size_t)cpio->entry_bytes_remaining));
+ return archive_write_set_format_cpio_odc(_a);
}
projects / platform / upstream / cmake.git / blobdiff