/*
* Copyright (C) 2012, 2013 Eric Biggers
*
- * wimlib - Library for working with WIM files
- *
* This file is part of wimlib, a library for working with WIM files.
*
* wimlib is free software; you can redistribute it and/or modify it under the
* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "wimlib/error.h"
+#include "wimlib/dentry.h"
+#include "wimlib/encoding.h"
+#include "wimlib/file_io.h"
+#include "wimlib/integrity.h"
+#include "wimlib/lookup_table.h"
+#include "wimlib/metadata.h"
+#ifdef WITH_NTFS_3G
+# include "wimlib/ntfs_3g.h" /* for do_ntfs_umount() */
+#endif
+#include "wimlib/security.h"
+#include "wimlib/wim.h"
+#include "wimlib/xml.h"
+
+#ifdef __WIN32__
+# include "wimlib/win32.h" /* for realpath() replacement */
+#endif
#include <errno.h>
#include <fcntl.h>
+#ifndef __WIN32__
+# include <langinfo.h>
+#endif
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
-#ifdef __WIN32__
-# include "win32.h"
-#else
-# include <langinfo.h>
-#endif
-
-#include "buffer_io.h"
-#include "dentry.h"
-#include "lookup_table.h"
-#include "wimlib_internal.h"
-#include "xml.h"
-
static int
-image_print_metadata(WIMStruct *w)
+image_print_metadata(WIMStruct *wim)
{
- DEBUG("Printing metadata for image %d", w->current_image);
- print_security_data(wim_security_data(w));
- return for_dentry_in_tree(wim_root_dentry(w), print_dentry,
- w->lookup_table);
+ DEBUG("Printing metadata for image %d", wim->current_image);
+ print_wim_security_data(wim_security_data(wim));
+ return for_dentry_in_tree(wim_root_dentry(wim), print_dentry,
+ wim->lookup_table);
}
static int
-image_print_files(WIMStruct *w)
+image_print_files(WIMStruct *wim)
{
- return for_dentry_in_tree(wim_root_dentry(w), print_dentry_full_path,
+ return for_dentry_in_tree(wim_root_dentry(wim), print_dentry_full_path,
NULL);
}
static WIMStruct *
-new_wim_struct()
+new_wim_struct(void)
{
- WIMStruct *w = CALLOC(1, sizeof(WIMStruct));
- if (w) {
- w->in_fd = INVALID_FILEDES;
- w->out_fd = INVALID_FILEDES;
+ WIMStruct *wim = CALLOC(1, sizeof(WIMStruct));
+ if (wim) {
+ wim->in_fd = -1;
+ wim->out_fd = -1;
}
- return w;
+ return wim;
}
/*
* the WIM only once, with that image selected.
*/
int
-for_image(WIMStruct *w, int image, int (*visitor)(WIMStruct *))
+for_image(WIMStruct *wim, int image, int (*visitor)(WIMStruct *))
{
int ret;
int start;
if (image == WIMLIB_ALL_IMAGES) {
start = 1;
- end = w->hdr.image_count;
- } else if (image >= 1 && image <= w->hdr.image_count) {
+ end = wim->hdr.image_count;
+ } else if (image >= 1 && image <= wim->hdr.image_count) {
start = image;
end = image;
} else {
return WIMLIB_ERR_INVALID_IMAGE;
}
for (i = start; i <= end; i++) {
- ret = select_wim_image(w, i);
+ ret = select_wim_image(wim, i);
if (ret != 0)
return ret;
- ret = visitor(w);
+ ret = visitor(wim);
if (ret != 0)
return ret;
}
return 0;
}
-/* Returns the compression type given in the flags of a WIM header. */
-static int
-wim_hdr_flags_compression_type(int wim_hdr_flags)
-{
- if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESSION) {
- if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESS_LZX)
- return WIMLIB_COMPRESSION_TYPE_LZX;
- else if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESS_XPRESS)
- return WIMLIB_COMPRESSION_TYPE_XPRESS;
- else
- return WIMLIB_COMPRESSION_TYPE_INVALID;
- } else {
- return WIMLIB_COMPRESSION_TYPE_NONE;
- }
-}
-
/*
* Creates a WIMStruct for a new WIM file.
*/
WIMLIBAPI int
-wimlib_create_new_wim(int ctype, WIMStruct **w_ret)
+wimlib_create_new_wim(int ctype, WIMStruct **wim_ret)
{
- WIMStruct *w;
+ WIMStruct *wim;
struct wim_lookup_table *table;
int ret;
+ wimlib_global_init(WIMLIB_INIT_FLAG_ASSUME_UTF8);
+
DEBUG("Creating new WIM with %"TS" compression.",
wimlib_get_compression_type_string(ctype));
/* Allocate the WIMStruct. */
- w = new_wim_struct();
- if (!w)
+ wim = new_wim_struct();
+ if (!wim)
return WIMLIB_ERR_NOMEM;
- ret = init_header(&w->hdr, ctype);
+ ret = init_header(&wim->hdr, ctype);
if (ret != 0)
goto out_free;
ret = WIMLIB_ERR_NOMEM;
goto out_free;
}
- w->lookup_table = table;
- *w_ret = w;
+ wim->lookup_table = table;
+ wim->refcnts_ok = 1;
+ wim->compression_type = ctype;
+ *wim_ret = wim;
return 0;
out_free:
- FREE(w);
+ FREE(wim);
return ret;
}
-WIMLIBAPI int
-wimlib_get_num_images(const WIMStruct *w)
-{
- return w->hdr.image_count;
-}
-
int
-select_wim_image(WIMStruct *w, int image)
+select_wim_image(WIMStruct *wim, int image)
{
struct wim_image_metadata *imd;
int ret;
return WIMLIB_ERR_INVALID_IMAGE;
}
- if (image == w->current_image)
+ if (image == wim->current_image)
return 0;
- if (image < 1 || image > w->hdr.image_count) {
+ if (image < 1 || image > wim->hdr.image_count) {
ERROR("Cannot select image %d: There are only %u images",
- image, w->hdr.image_count);
+ image, wim->hdr.image_count);
return WIMLIB_ERR_INVALID_IMAGE;
}
+ if (wim->hdr.part_number != 1) {
+ ERROR("Cannot select an image from a non-first part of a split WIM");
+ return WIMLIB_ERR_SPLIT_UNSUPPORTED;
+ }
+
/* If a valid image is currently selected, it can be freed if it is not
* modified. */
- if (w->current_image != WIMLIB_NO_IMAGE) {
- imd = wim_get_current_image_metadata(w);
+ if (wim->current_image != WIMLIB_NO_IMAGE) {
+ imd = wim_get_current_image_metadata(wim);
if (!imd->modified) {
wimlib_assert(list_empty(&imd->unhashed_streams));
- DEBUG("Freeing image %u", w->current_image);
+ DEBUG("Freeing image %u", wim->current_image);
destroy_image_metadata(imd, NULL, false);
}
}
- w->current_image = image;
- imd = wim_get_current_image_metadata(w);
- if (imd->root_dentry) {
+ wim->current_image = image;
+ imd = wim_get_current_image_metadata(wim);
+ if (imd->root_dentry || imd->modified) {
ret = 0;
} else {
#ifdef ENABLE_DEBUG
"lookup table entry:");
print_lookup_table_entry(imd->metadata_lte, stderr);
#endif
- ret = read_metadata_resource(w, imd);
+ ret = read_metadata_resource(wim, imd);
if (ret)
- w->current_image = WIMLIB_NO_IMAGE;
+ wim->current_image = WIMLIB_NO_IMAGE;
}
return ret;
}
-/* Returns the compression type of the WIM file. */
-WIMLIBAPI int
-wimlib_get_compression_type(const WIMStruct *w)
-{
- return wim_hdr_flags_compression_type(w->hdr.flags);
-}
-
WIMLIBAPI const tchar *
wimlib_get_compression_type_string(int ctype)
{
* starting at 1.
*/
WIMLIBAPI int
-wimlib_resolve_image(WIMStruct *w, const tchar *image_name_or_num)
+wimlib_resolve_image(WIMStruct *wim, const tchar *image_name_or_num)
{
tchar *p;
long image;
return WIMLIB_ALL_IMAGES;
image = tstrtol(image_name_or_num, &p, 10);
if (p != image_name_or_num && *p == T('\0') && image > 0) {
- if (image > w->hdr.image_count)
+ if (image > wim->hdr.image_count)
return WIMLIB_NO_IMAGE;
return image;
} else {
- for (i = 1; i <= w->hdr.image_count; i++) {
+ for (i = 1; i <= wim->hdr.image_count; i++) {
if (!tstrcmp(image_name_or_num,
- wimlib_get_image_name(w, i)))
+ wimlib_get_image_name(wim, i)))
return i;
}
return WIMLIB_NO_IMAGE;
/* Prints some basic information about a WIM file. */
WIMLIBAPI void
-wimlib_print_wim_information(const WIMStruct *w)
+wimlib_print_wim_information(const WIMStruct *wim)
{
- const struct wim_header *hdr;
+ struct wimlib_wim_info info;
+
+ wimlib_get_wim_info((WIMStruct*)wim, &info);
- hdr = &w->hdr;
tputs(T("WIM Information:"));
tputs(T("----------------"));
- tprintf(T("Path: %"TS"\n"), w->filename);
+ tprintf(T("Path: %"TS"\n"), wim->filename);
tfputs(T("GUID: 0x"), stdout);
- print_byte_field(hdr->guid, WIM_GID_LEN, stdout);
+ print_byte_field(info.guid, WIM_GID_LEN, stdout);
tputchar(T('\n'));
- tprintf(T("Image Count: %d\n"), hdr->image_count);
+ tprintf(T("Image Count: %d\n"), info.image_count);
tprintf(T("Compression: %"TS"\n"),
- wimlib_get_compression_type_string(wimlib_get_compression_type(w)));
- tprintf(T("Part Number: %d/%d\n"), hdr->part_number, hdr->total_parts);
- tprintf(T("Boot Index: %d\n"), hdr->boot_idx);
- tprintf(T("Size: %"PRIu64" bytes\n"),
- wim_info_get_total_bytes(w->wim_info));
+ wimlib_get_compression_type_string(info.compression_type));
+ tprintf(T("Part Number: %d/%d\n"), info.part_number, info.total_parts);
+ tprintf(T("Boot Index: %d\n"), info.boot_index);
+ tprintf(T("Size: %"PRIu64" bytes\n"), info.total_bytes);
tprintf(T("Integrity Info: %"TS"\n"),
- (w->hdr.integrity.offset != 0) ? T("yes") : T("no"));
+ info.has_integrity_table ? T("yes") : T("no"));
tprintf(T("Relative path junction: %"TS"\n"),
- (hdr->flags & WIM_HDR_FLAG_RP_FIX) ? T("yes") : T("no"));
+ info.has_rpfix ? T("yes") : T("no"));
tputchar(T('\n'));
}
-WIMLIBAPI bool
-wimlib_has_integrity_table(const WIMStruct *w)
-{
- return w->hdr.integrity.size != 0;
-}
-
WIMLIBAPI void
-wimlib_print_available_images(const WIMStruct *w, int image)
+wimlib_print_available_images(const WIMStruct *wim, int image)
{
int first;
int last;
if (image == WIMLIB_ALL_IMAGES) {
n = tprintf(T("Available Images:\n"));
first = 1;
- last = w->hdr.image_count;
- } else if (image >= 1 && image <= w->hdr.image_count) {
+ last = wim->hdr.image_count;
+ } else if (image >= 1 && image <= wim->hdr.image_count) {
n = tprintf(T("Information for Image %d\n"), image);
first = image;
last = image;
tputchar(T('-'));
tputchar(T('\n'));
for (i = first; i <= last; i++)
- print_image_info(w->wim_info, i);
+ print_image_info(wim->wim_info, i);
}
/* Prints the metadata for the specified image, which may be WIMLIB_ALL_IMAGES, but
* not WIMLIB_NO_IMAGE. */
WIMLIBAPI int
-wimlib_print_metadata(WIMStruct *w, int image)
+wimlib_print_metadata(WIMStruct *wim, int image)
{
- if (w->hdr.part_number != 1) {
+ if (wim->hdr.part_number != 1) {
ERROR("Cannot show the metadata from part %hu of a %hu-part split WIM!",
- w->hdr.part_number, w->hdr.total_parts);
+ wim->hdr.part_number, wim->hdr.total_parts);
ERROR("Select the first part of the split WIM to see the metadata.");
return WIMLIB_ERR_SPLIT_UNSUPPORTED;
}
- return for_image(w, image, image_print_metadata);
+ return for_image(wim, image, image_print_metadata);
}
WIMLIBAPI int
-wimlib_print_files(WIMStruct *w, int image)
+wimlib_print_files(WIMStruct *wim, int image)
{
- if (w->hdr.part_number != 1) {
+ if (wim->hdr.part_number != 1) {
ERROR("Cannot list the files from part %hu of a %hu-part split WIM!",
- w->hdr.part_number, w->hdr.total_parts);
+ wim->hdr.part_number, wim->hdr.total_parts);
ERROR("Select the first part of the split WIM if you'd like to list the files.");
return WIMLIB_ERR_SPLIT_UNSUPPORTED;
}
- return for_image(w, image, image_print_files);
+ return for_image(wim, image, image_print_files);
}
-/* Sets the index of the bootable image. */
WIMLIBAPI int
-wimlib_set_boot_idx(WIMStruct *w, int boot_idx)
-{
- if (w->hdr.total_parts != 1) {
- ERROR("Cannot modify the boot index of a split WIM!");
- return WIMLIB_ERR_SPLIT_UNSUPPORTED;
- }
- if (boot_idx < 0 || boot_idx > w->hdr.image_count)
- return WIMLIB_ERR_INVALID_IMAGE;
- w->hdr.boot_idx = boot_idx;
+wimlib_get_wim_info(WIMStruct *wim, struct wimlib_wim_info *info)
+{
+ memset(info, 0, sizeof(struct wimlib_wim_info));
+ memcpy(info->guid, wim->hdr.guid, WIMLIB_GUID_LEN);
+ info->image_count = wim->hdr.image_count;
+ info->boot_index = wim->hdr.boot_idx;
+ info->wim_version = WIM_VERSION;
+ info->chunk_size = WIM_CHUNK_SIZE;
+ info->part_number = wim->hdr.part_number;
+ info->total_parts = wim->hdr.total_parts;
+ info->compression_type = wim->compression_type;
+ if (wim->wim_info)
+ info->total_bytes = wim->wim_info->total_bytes;
+ else
+ info->total_bytes = 0;
+ info->has_integrity_table = wim->hdr.integrity.offset != 0;
+ info->opened_from_file = (wim->filename != NULL);
+ info->is_readonly = (wim->hdr.flags & WIM_HDR_FLAG_READONLY) ||
+ (wim->hdr.total_parts != 1) ||
+ (wim->filename && taccess(wim->filename, W_OK));
+ info->has_rpfix = (wim->hdr.flags & WIM_HDR_FLAG_RP_FIX) != 0;
+ info->is_marked_readonly = (wim->hdr.flags & WIM_HDR_FLAG_READONLY) != 0;
+ info->write_in_progress = (wim->hdr.flags & WIM_HDR_FLAG_WRITE_IN_PROGRESS) != 0;
+ info->metadata_only = (wim->hdr.flags & WIM_HDR_FLAG_METADATA_ONLY) != 0;
+ info->resource_only = (wim->hdr.flags & WIM_HDR_FLAG_RESOURCE_ONLY) != 0;
+ info->spanned = (wim->hdr.flags & WIM_HDR_FLAG_SPANNED) != 0;
return 0;
}
+
+/* Deprecated */
WIMLIBAPI int
-wimlib_get_part_number(const WIMStruct *w, int *total_parts_ret)
+wimlib_get_boot_idx(const WIMStruct *wim)
{
+ struct wimlib_wim_info info;
+
+ wimlib_get_wim_info((WIMStruct*)wim, &info);
+ return info.boot_index;
+}
+
+/* Deprecated */
+WIMLIBAPI int
+wimlib_get_compression_type(const WIMStruct *wim)
+{
+ struct wimlib_wim_info info;
+
+ wimlib_get_wim_info((WIMStruct*)wim, &info);
+ return info.compression_type;
+}
+
+/* Deprecated */
+WIMLIBAPI int
+wimlib_get_num_images(const WIMStruct *wim)
+{
+ struct wimlib_wim_info info;
+
+ wimlib_get_wim_info((WIMStruct*)wim, &info);
+ return info.image_count;
+}
+
+/* Deprecated */
+WIMLIBAPI int
+wimlib_get_part_number(const WIMStruct *wim, int *total_parts_ret)
+{
+ struct wimlib_wim_info info;
+
+ wimlib_get_wim_info((WIMStruct*)wim, &info);
if (total_parts_ret)
- *total_parts_ret = w->hdr.total_parts;
- return w->hdr.part_number;
+ *total_parts_ret = info.total_parts;
+ return info.part_number;
+}
+
+/* Deprecated */
+WIMLIBAPI bool
+wimlib_has_integrity_table(const WIMStruct *wim)
+{
+ struct wimlib_wim_info info;
+
+ wimlib_get_wim_info((WIMStruct*)wim, &info);
+ return info.has_integrity_table;
}
+WIMLIBAPI int
+wimlib_set_wim_info(WIMStruct *wim, const struct wimlib_wim_info *info, int which)
+{
+ int ret;
+
+ if (which & WIMLIB_CHANGE_READONLY_FLAG) {
+ if (info->is_marked_readonly)
+ wim->hdr.flags |= WIM_HDR_FLAG_READONLY;
+ else
+ wim->hdr.flags &= ~WIM_HDR_FLAG_READONLY;
+ }
+
+ if ((which & ~WIMLIB_CHANGE_READONLY_FLAG) == 0)
+ return 0;
+ ret = can_modify_wim(wim);
+ if (ret)
+ return ret;
+
+ if (which & WIMLIB_CHANGE_GUID)
+ memcpy(wim->hdr.guid, info->guid, WIM_GID_LEN);
+
+ if (which & WIMLIB_CHANGE_BOOT_INDEX) {
+ if (info->boot_index < 0 || info->boot_index > wim->hdr.image_count)
+ {
+ ERROR("%u is not 0 or a valid image in the WIM to mark as bootable",
+ info->boot_index);
+ return WIMLIB_ERR_INVALID_IMAGE;
+ }
+ wim->hdr.boot_idx = info->boot_index;
+ }
+
+ if (which & WIMLIB_CHANGE_RPFIX_FLAG) {
+ if (info->has_rpfix)
+ wim->hdr.flags |= WIM_HDR_FLAG_RP_FIX;
+ else
+ wim->hdr.flags &= ~WIM_HDR_FLAG_RP_FIX;
+ }
+ return 0;
+}
+
+/* Deprecated */
WIMLIBAPI int
-wimlib_get_boot_idx(const WIMStruct *w)
+wimlib_set_boot_idx(WIMStruct *wim, int boot_idx)
{
- return w->hdr.boot_idx;
+ struct wimlib_wim_info info;
+
+ info.boot_index = boot_idx;
+ return wimlib_set_wim_info(wim, &info, WIMLIB_CHANGE_BOOT_INDEX);
}
static int
-do_open_wim(const tchar *filename, filedes_t *fd_ret)
+do_open_wim(const tchar *filename, int *fd_ret)
{
int fd;
- fd = topen(filename, O_RDONLY);
- if (fd == INVALID_FILEDES) {
+ fd = topen(filename, O_RDONLY | O_BINARY);
+ if (fd == -1) {
ERROR_WITH_ERRNO("Can't open \"%"TS"\" read-only", filename);
return WIMLIB_ERR_OPEN;
}
}
int
-reopen_wim(WIMStruct *w)
+reopen_wim(WIMStruct *wim)
{
- wimlib_assert(w->in_fd == INVALID_FILEDES);
- return do_open_wim(w->filename, &w->in_fd);
+ wimlib_assert(wim->in_fd == -1);
+ return do_open_wim(wim->filename, &wim->in_fd);
}
int
-close_wim(WIMStruct *w)
+close_wim(WIMStruct *wim)
{
- if (w->in_fd != INVALID_FILEDES) {
- close(w->in_fd);
- w->in_fd = INVALID_FILEDES;
+ if (wim->in_fd != -1) {
+ close(wim->in_fd);
+ wim->in_fd = -1;
}
return 0;
}
* lookup table, and optionally checks the integrity.
*/
static int
-begin_read(WIMStruct *w, const tchar *in_wim_path, int open_flags,
+begin_read(WIMStruct *wim, const tchar *in_wim_path, int open_flags,
wimlib_progress_func_t progress_func)
{
int ret;
DEBUG("Reading the WIM file `%"TS"'", in_wim_path);
- ret = do_open_wim(in_wim_path, &w->in_fd);
+ ret = do_open_wim(in_wim_path, &wim->in_fd);
if (ret)
return ret;
* Warning: in Windows native builds, realpath() calls the replacement
* function in win32.c.
*/
- w->filename = realpath(in_wim_path, NULL);
- if (!w->filename) {
+ wim->filename = realpath(in_wim_path, NULL);
+ if (!wim->filename) {
ERROR_WITH_ERRNO("Failed to resolve WIM filename");
if (errno == ENOMEM)
return WIMLIB_ERR_NOMEM;
return WIMLIB_ERR_OPEN;
}
- ret = read_header(w->in_fd, &w->hdr, open_flags);
+ ret = read_header(wim->filename, wim->in_fd, &wim->hdr);
if (ret)
return ret;
- DEBUG("According to header, WIM contains %u images", w->hdr.image_count);
+ if (wim->hdr.flags & WIM_HDR_FLAG_WRITE_IN_PROGRESS) {
+ WARNING("The WIM_HDR_FLAG_WRITE_IN_PROGRESS is set in the header of \"%"TS"\".\n"
+ " It may be being changed by another process, or a process\n"
+ " may have crashed while writing the WIM.", in_wim_path);
+ }
+
+ if (open_flags & WIMLIB_OPEN_FLAG_WRITE_ACCESS) {
+ ret = can_modify_wim(wim);
+ if (ret)
+ return ret;
+ }
+
+ if (wim->hdr.total_parts != 1 && !(open_flags & WIMLIB_OPEN_FLAG_SPLIT_OK)) {
+ ERROR("\"%"TS"\": This WIM is part %u of a %u-part WIM",
+ in_wim_path, wim->hdr.part_number, wim->hdr.total_parts);
+ return WIMLIB_ERR_SPLIT_UNSUPPORTED;
+ }
+
+ DEBUG("According to header, WIM contains %u images", wim->hdr.image_count);
/* If the boot index is invalid, print a warning and set it to 0 */
- if (w->hdr.boot_idx > w->hdr.image_count) {
+ if (wim->hdr.boot_idx > wim->hdr.image_count) {
WARNING("In `%"TS"', image %u is marked as bootable, "
"but there are only %u images in the WIM",
- in_wim_path, w->hdr.boot_idx, w->hdr.image_count);
- w->hdr.boot_idx = 0;
- }
-
- if (wimlib_get_compression_type(w) == WIMLIB_COMPRESSION_TYPE_INVALID) {
- ERROR("Invalid compression type (WIM header flags = 0x%x)",
- w->hdr.flags);
- return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
+ in_wim_path, wim->hdr.boot_idx, wim->hdr.image_count);
+ wim->hdr.boot_idx = 0;
+ }
+
+ /* Check and cache the compression type */
+ if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESSION) {
+ if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESS_LZX) {
+ if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESS_XPRESS) {
+ ERROR("Multiple compression flags are set in \"%"TS"\"",
+ in_wim_path);
+ return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
+ }
+ wim->compression_type = WIMLIB_COMPRESSION_TYPE_LZX;
+ } else if (wim->hdr.flags & WIM_HDR_FLAG_COMPRESS_XPRESS) {
+ wim->compression_type = WIMLIB_COMPRESSION_TYPE_XPRESS;
+ } else {
+ ERROR("The compression flag is set on \"%"TS"\", but "
+ "neither the XPRESS nor LZX flag is set",
+ in_wim_path);
+ return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
+ }
+ } else {
+ BUILD_BUG_ON(WIMLIB_COMPRESSION_TYPE_NONE != 0);
}
if (open_flags & WIMLIB_OPEN_FLAG_CHECK_INTEGRITY) {
- ret = check_wim_integrity(w, progress_func);
+ ret = check_wim_integrity(wim, progress_func);
if (ret == WIM_INTEGRITY_NONEXISTENT) {
WARNING("No integrity information for `%"TS"'; skipping "
"integrity check.", in_wim_path);
}
}
- if (w->hdr.image_count != 0 && w->hdr.part_number == 1) {
- w->image_metadata = new_image_metadata_array(w->hdr.image_count);
- if (!w->image_metadata)
+ if (wim->hdr.image_count != 0 && wim->hdr.part_number == 1) {
+ wim->image_metadata = new_image_metadata_array(wim->hdr.image_count);
+ if (!wim->image_metadata)
return WIMLIB_ERR_NOMEM;
}
- ret = read_lookup_table(w);
+ ret = read_lookup_table(wim);
if (ret)
return ret;
- ret = read_xml_data(w->in_fd, &w->hdr.xml_res_entry, &w->wim_info);
+ ret = read_xml_data(wim->in_fd, &wim->hdr.xml_res_entry, &wim->wim_info);
if (ret)
return ret;
- xml_num_images = wim_info_get_num_images(w->wim_info);
- if (xml_num_images != w->hdr.image_count) {
+ xml_num_images = wim_info_get_num_images(wim->wim_info);
+ if (xml_num_images != wim->hdr.image_count) {
ERROR("In the file `%"TS"', there are %u <IMAGE> elements "
"in the XML data,", in_wim_path, xml_num_images);
ERROR("but %u images in the WIM! There must be exactly one "
- "<IMAGE> element per image.", w->hdr.image_count);
+ "<IMAGE> element per image.", wim->hdr.image_count);
return WIMLIB_ERR_IMAGE_COUNT;
}
*/
WIMLIBAPI int
wimlib_open_wim(const tchar *wim_file, int open_flags,
- WIMStruct **w_ret,
+ WIMStruct **wim_ret,
wimlib_progress_func_t progress_func)
{
- WIMStruct *w;
+ WIMStruct *wim;
int ret;
- if (!wim_file || !w_ret)
- return WIMLIB_ERR_INVALID_PARAM;
+ wimlib_global_init(WIMLIB_INIT_FLAG_ASSUME_UTF8);
- w = new_wim_struct();
- if (!w)
- return WIMLIB_ERR_NOMEM;
+ ret = WIMLIB_ERR_INVALID_PARAM;
+ if (!wim_file || !wim_ret)
+ goto out;
- ret = begin_read(w, wim_file, open_flags, progress_func);
- if (ret == 0)
- *w_ret = w;
- else
- wimlib_free(w);
+ ret = WIMLIB_ERR_NOMEM;
+ wim = new_wim_struct();
+ if (!wim)
+ goto out;
+
+ ret = begin_read(wim, wim_file, open_flags, progress_func);
+ if (ret)
+ goto out_wimlib_free;
+
+ ret = 0;
+ *wim_ret = wim;
+ goto out;
+out_wimlib_free:
+ wimlib_free(wim);
+out:
return ret;
}
{
free_dentry_tree(imd->root_dentry, table);
imd->root_dentry = NULL;
- free_security_data(imd->security_data);
+ free_wim_security_data(imd->security_data);
imd->security_data = NULL;
if (free_metadata_lte) {
/* Appends the specified image metadata structure to the array of image metadata
* for a WIM, and increments the image count. */
int
-append_image_metadata(WIMStruct *w, struct wim_image_metadata *imd)
+append_image_metadata(WIMStruct *wim, struct wim_image_metadata *imd)
{
struct wim_image_metadata **imd_array;
DEBUG("Reallocating image metadata array for image_count = %u",
- w->hdr.image_count + 1);
- imd_array = REALLOC(w->image_metadata,
- sizeof(w->image_metadata[0]) * (w->hdr.image_count + 1));
+ wim->hdr.image_count + 1);
+ imd_array = REALLOC(wim->image_metadata,
+ sizeof(wim->image_metadata[0]) * (wim->hdr.image_count + 1));
if (!imd_array)
return WIMLIB_ERR_NOMEM;
- w->image_metadata = imd_array;
- imd_array[w->hdr.image_count++] = imd;
+ wim->image_metadata = imd_array;
+ imd_array[wim->hdr.image_count++] = imd;
return 0;
}
struct wim_image_metadata *
-new_image_metadata()
+new_image_metadata(void)
{
struct wim_image_metadata *imd;
* library has previously used to add or mount an image using the same
* WIMStruct. */
int
-wim_checksum_unhashed_streams(WIMStruct *w)
+wim_checksum_unhashed_streams(WIMStruct *wim)
{
int ret;
- for (int i = 0; i < w->hdr.image_count; i++) {
+ for (int i = 0; i < wim->hdr.image_count; i++) {
struct wim_lookup_table_entry *lte, *tmp;
- struct wim_image_metadata *imd = w->image_metadata[i];
+ struct wim_image_metadata *imd = wim->image_metadata[i];
image_for_each_unhashed_stream_safe(lte, tmp, imd) {
- ret = hash_unhashed_stream(lte, w->lookup_table, NULL);
+ ret = hash_unhashed_stream(lte, wim->lookup_table, NULL);
if (ret)
return ret;
}
return 0;
}
+/*
+ * can_modify_wim - Check if a given WIM is writeable. This is only the case if
+ * it meets the following three conditions:
+ *
+ * 1. Write access is allowed to the underlying file (if any) at the filesystem level.
+ * 2. The WIM is not part of a spanned set.
+ * 3. The WIM_HDR_FLAG_READONLY flag is not set in the WIM header.
+ *
+ * Return value is 0 if writable; WIMLIB_ERR_WIM_IS_READONLY otherwise.
+ */
+int
+can_modify_wim(WIMStruct *wim)
+{
+ if (wim->filename) {
+ if (taccess(wim->filename, W_OK)) {
+ ERROR_WITH_ERRNO("Can't modify \"%"TS"\"", wim->filename);
+ return WIMLIB_ERR_WIM_IS_READONLY;
+ }
+ }
+ if (wim->hdr.total_parts != 1) {
+ ERROR("Cannot modify \"%"TS"\": is part of a spanned set",
+ wim->filename);
+ return WIMLIB_ERR_WIM_IS_READONLY;
+ }
+ if (wim->hdr.flags & WIM_HDR_FLAG_READONLY) {
+ ERROR("Cannot modify \"%"TS"\": is marked read-only",
+ wim->filename);
+ return WIMLIB_ERR_WIM_IS_READONLY;
+ }
+ return 0;
+}
+
+/*
+ * can_delete_from_wim - Check if files or images can be deleted from a given
+ * WIM file.
+ *
+ * This theoretically should be exactly the same as can_modify_wim(), but
+ * unfortunately, due to bugs in Microsoft's software that generate incorrect
+ * reference counts for some WIM resources, we need to run expensive
+ * verifications to make sure the reference counts are correct on all WIM
+ * resources. Otherwise we might delete a WIM resource whose reference count
+ * has fallen to 0, but is actually still referenced somewhere.
+ */
+int
+can_delete_from_wim(WIMStruct *wim)
+{
+ int ret;
+
+ ret = can_modify_wim(wim);
+ if (ret)
+ return ret;
+ if (!wim->refcnts_ok)
+ wim_recalculate_refcnts(wim);
+ return 0;
+}
+
/* Frees the memory for the WIMStruct, including all internal memory; also
* closes all files associated with the WIMStruct. */
WIMLIBAPI void
-wimlib_free(WIMStruct *w)
+wimlib_free(WIMStruct *wim)
{
DEBUG("Freeing WIMStruct");
- if (!w)
+ if (!wim)
return;
- if (w->in_fd != INVALID_FILEDES)
- close(w->in_fd);
- if (w->out_fd != INVALID_FILEDES)
- close(w->out_fd);
+ if (wim->in_fd != -1)
+ close(wim->in_fd);
+ if (wim->out_fd != -1)
+ close(wim->out_fd);
- free_lookup_table(w->lookup_table);
+ free_lookup_table(wim->lookup_table);
- FREE(w->filename);
- free_wim_info(w->wim_info);
- if (w->image_metadata) {
- for (unsigned i = 0; i < w->hdr.image_count; i++)
- put_image_metadata(w->image_metadata[i], NULL);
- FREE(w->image_metadata);
+ FREE(wim->filename);
+ free_wim_info(wim->wim_info);
+ if (wim->image_metadata) {
+ for (unsigned i = 0; i < wim->hdr.image_count; i++)
+ put_image_metadata(wim->image_metadata[i], NULL);
+ FREE(wim->image_metadata);
}
- FREE(w);
+ FREE(wim);
DEBUG("Freed WIMStruct");
}
static bool
-test_locale_ctype_utf8()
+test_locale_ctype_utf8(void)
{
#ifdef __WIN32__
return false;
WIMLIBAPI int
wimlib_global_init(int init_flags)
{
+ static bool already_inited = false;
+
+ if (already_inited)
+ return 0;
libxml_global_init();
if (!(init_flags & WIMLIB_INIT_FLAG_ASSUME_UTF8)) {
wimlib_mbs_is_utf8 = test_locale_ctype_utf8();
#ifdef __WIN32__
win32_global_init();
#endif
+ already_inited = true;
return 0;
}
/* Free global memory allocations. Not strictly necessary if the process using
* wimlib is just about to exit (as is the case for 'imagex'). */
WIMLIBAPI void
-wimlib_global_cleanup()
+wimlib_global_cleanup(void)
{
libxml_global_cleanup();
iconv_global_cleanup();
git://wimlib.net / wimlib / blobdiff