4 * Support for extracting WIM files.
8 * Copyright (C) 2012, 2013 Eric Biggers
10 * This file is part of wimlib, a library for working with WIM files.
12 * wimlib is free software; you can redistribute it and/or modify it under the
13 * terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 3 of the License, or (at your option)
17 * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
18 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
19 * A PARTICULAR PURPOSE. See the GNU General Public License for more
22 * You should have received a copy of the GNU General Public License
23 * along with wimlib; if not, see http://www.gnu.org/licenses/.
36 # include "timestamp.h"
37 # include <sys/time.h>
48 #include "lookup_table.h"
49 #include "wimlib_internal.h"
53 # include <ntfs-3g/volume.h>
62 /* Returns the number of components of @path. */
64 get_num_path_components(const char *path)
66 unsigned num_components = 0;
72 while (*path && *path != '/')
75 return num_components;
79 path_next_part(const char *path)
81 while (*path && *path != '/')
83 while (*path && *path == '/')
89 extract_regular_file_linked(struct wim_dentry *dentry,
90 const char *output_path,
91 struct apply_args *args,
92 struct wim_lookup_table_entry *lte)
94 /* This mode overrides the normal hard-link extraction and
95 * instead either symlinks or hardlinks *all* identical files in
96 * the WIM, even if they are in a different image (in the case
97 * of a multi-image extraction) */
99 if (args->extract_flags & WIMLIB_EXTRACT_FLAG_HARDLINK) {
100 if (link(lte->extracted_file, output_path) != 0) {
101 ERROR_WITH_ERRNO("Failed to hard link "
103 output_path, lte->extracted_file);
104 return WIMLIB_ERR_LINK;
107 int num_path_components;
108 int num_output_dir_path_components;
109 size_t extracted_file_len;
114 num_path_components = get_num_path_components(output_path) - 1;
115 num_output_dir_path_components = get_num_path_components(args->target);
117 if (args->extract_flags & WIMLIB_EXTRACT_FLAG_MULTI_IMAGE) {
118 num_path_components++;
119 num_output_dir_path_components--;
121 extracted_file_len = strlen(lte->extracted_file);
123 char buf[extracted_file_len + 3 * num_path_components + 1];
126 for (i = 0; i < num_path_components; i++) {
131 p2 = lte->extracted_file;
134 while (num_output_dir_path_components > 0) {
135 p2 = path_next_part(p2);
136 num_output_dir_path_components--;
139 if (symlink(buf, output_path) != 0) {
140 ERROR_WITH_ERRNO("Failed to symlink `%s' to `%s'",
141 buf, lte->extracted_file);
142 return WIMLIB_ERR_LINK;
149 symlink_apply_unix_data(const char *link,
150 const struct wimlib_unix_data *unix_data)
152 if (lchown(link, unix_data->uid, unix_data->gid)) {
153 if (errno == EPERM) {
155 WARNING_WITH_ERRNO("failed to set symlink UNIX owner/group");
157 ERROR_WITH_ERRNO("failed to set symlink UNIX owner/group");
158 return WIMLIB_ERR_INVALID_DENTRY;
165 fd_apply_unix_data(int fd, const struct wimlib_unix_data *unix_data)
167 if (fchown(fd, unix_data->uid, unix_data->gid)) {
168 if (errno == EPERM) {
169 WARNING_WITH_ERRNO("failed to set file UNIX owner/group");
172 ERROR_WITH_ERRNO("failed to set file UNIX owner/group");
173 return WIMLIB_ERR_INVALID_DENTRY;
177 if (fchmod(fd, unix_data->mode)) {
178 if (errno == EPERM) {
179 WARNING_WITH_ERRNO("failed to set UNIX file mode");
182 ERROR_WITH_ERRNO("failed to set UNIX file mode");
183 return WIMLIB_ERR_INVALID_DENTRY;
190 dir_apply_unix_data(const char *dir, const struct wimlib_unix_data *unix_data)
192 int dfd = open(dir, O_RDONLY);
195 ret = fd_apply_unix_data(dfd, unix_data);
197 ERROR_WITH_ERRNO("can't close directory `%s'", dir);
198 ret = WIMLIB_ERR_MKDIR;
201 ERROR_WITH_ERRNO("can't open directory `%s'", dir);
202 ret = WIMLIB_ERR_MKDIR;
208 extract_regular_file_unlinked(struct wim_dentry *dentry,
209 struct apply_args *args,
210 const char *output_path,
211 struct wim_lookup_table_entry *lte)
213 /* Normal mode of extraction. Regular files and hard links are
214 * extracted in the way that they appear in the WIM. */
218 struct wim_inode *inode = dentry->d_inode;
220 if (!((args->extract_flags & WIMLIB_EXTRACT_FLAG_MULTI_IMAGE)
221 && (args->extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
222 WIMLIB_EXTRACT_FLAG_HARDLINK))))
224 /* If the dentry is part of a hard link set of at least 2
225 * dentries and one of the other dentries has already been
226 * extracted, make a hard link to the file corresponding to this
227 * already-extracted directory. Otherwise, extract the file and
228 * set the inode->i_extracted_file field so that other dentries
229 * in the hard link group can link to it. */
230 if (inode->i_nlink > 1) {
231 if (inode->i_extracted_file) {
232 DEBUG("Extracting hard link `%s' => `%s'",
233 output_path, inode->i_extracted_file);
234 if (link(inode->i_extracted_file, output_path) != 0) {
235 ERROR_WITH_ERRNO("Failed to hard link "
238 inode->i_extracted_file);
239 return WIMLIB_ERR_LINK;
243 FREE(inode->i_extracted_file);
244 inode->i_extracted_file = STRDUP(output_path);
245 if (!inode->i_extracted_file) {
246 ERROR("Failed to allocate memory for filename");
247 return WIMLIB_ERR_NOMEM;
252 /* Extract the contents of the file to @output_path. */
254 out_fd = open(output_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
256 ERROR_WITH_ERRNO("Failed to open the file `%s' for writing",
258 return WIMLIB_ERR_OPEN;
262 /* Empty file with no lookup table entry */
263 DEBUG("Empty file `%s'.", output_path);
265 goto out_extract_unix_data;
268 ret = extract_wim_resource_to_fd(lte, out_fd, wim_resource_size(lte));
270 ERROR("Failed to extract resource to `%s'", output_path);
274 out_extract_unix_data:
275 if (args->extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
276 struct wimlib_unix_data unix_data;
277 ret = inode_get_unix_data(inode, &unix_data, NULL);
283 ret = fd_apply_unix_data(out_fd, &unix_data);
288 args->progress.extract.completed_bytes += wim_resource_size(lte);
290 if (close(out_fd) != 0) {
291 ERROR_WITH_ERRNO("Failed to close file `%s'", output_path);
293 ret = WIMLIB_ERR_WRITE;
299 extract_regular_file(struct wim_dentry *dentry,
300 struct apply_args *args,
301 const char *output_path)
303 struct wim_lookup_table_entry *lte;
304 const struct wim_inode *inode = dentry->d_inode;
306 lte = inode_unnamed_lte_resolved(inode);
308 if (lte && (args->extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
309 WIMLIB_EXTRACT_FLAG_HARDLINK)))
311 if (lte->extracted_file) {
312 return extract_regular_file_linked(dentry, output_path, args, lte);
314 lte->extracted_file = STRDUP(output_path);
315 if (!lte->extracted_file)
316 return WIMLIB_ERR_NOMEM;
319 return extract_regular_file_unlinked(dentry, args, output_path, lte);
323 extract_symlink(struct wim_dentry *dentry,
324 struct apply_args *args,
325 const char *output_path)
328 ssize_t ret = inode_readlink(dentry->d_inode, target,
329 sizeof(target), args->w, false);
330 struct wim_lookup_table_entry *lte;
333 ERROR("Could not read the symbolic link from dentry `%s'",
334 dentry_full_path(dentry));
335 return WIMLIB_ERR_INVALID_DENTRY;
337 ret = symlink(target, output_path);
339 ERROR_WITH_ERRNO("Failed to symlink `%s' to `%s'",
340 output_path, target);
341 return WIMLIB_ERR_LINK;
343 lte = inode_unnamed_lte_resolved(dentry->d_inode);
344 wimlib_assert(lte != NULL);
345 if (args->extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
346 struct wimlib_unix_data unix_data;
347 ret = inode_get_unix_data(dentry->d_inode, &unix_data, NULL);
353 ret = symlink_apply_unix_data(output_path, &unix_data);
357 args->progress.extract.completed_bytes += wim_resource_size(lte);
361 #endif /* !__WIN32__ */
364 extract_directory(struct wim_dentry *dentry,
365 const tchar *output_path, bool is_root)
370 ret = tstat(output_path, &stbuf);
372 if (S_ISDIR(stbuf.st_mode)) {
374 /*WARNING("`%s' already exists", output_path);*/
377 ERROR("`%"TS"' is not a directory", output_path);
378 return WIMLIB_ERR_MKDIR;
381 if (errno != ENOENT) {
382 ERROR_WITH_ERRNO("Failed to stat `%"TS"'", output_path);
383 return WIMLIB_ERR_STAT;
387 if (tmkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH))
389 ERROR_WITH_ERRNO("Cannot create directory `%"TS"'", output_path);
390 return WIMLIB_ERR_MKDIR;
396 struct wimlib_unix_data unix_data;
397 ret = inode_get_unix_data(dentry->d_inode, &unix_data, NULL);
403 ret = dir_apply_unix_data(output_path, &unix_data);
410 static int unix_do_apply_dentry(const char *output_path,
411 size_t output_path_len,
412 struct wim_dentry *dentry,
413 struct apply_args *args)
415 const struct wim_inode *inode = dentry->d_inode;
417 if (inode_is_symlink(inode))
418 return extract_symlink(dentry, args, output_path);
419 else if (inode_is_directory(inode))
420 return extract_directory((args->extract_flags &
421 WIMLIB_EXTRACT_FLAG_UNIX_DATA) ? dentry : NULL,
424 return extract_regular_file(dentry, args, output_path);
428 unix_do_apply_dentry_timestamps(const char *output_path,
429 size_t output_path_len,
430 const struct wim_dentry *dentry,
431 struct apply_args *args)
434 const struct wim_inode *inode = dentry->d_inode;
436 #ifdef HAVE_UTIMENSAT
437 /* Convert the WIM timestamps, which are accurate to 100 nanoseconds,
438 * into `struct timespec's for passing to utimensat(), which is accurate
439 * to 1 nanosecond. */
441 struct timespec ts[2];
442 ts[0] = wim_timestamp_to_timespec(inode->i_last_access_time);
443 ts[1] = wim_timestamp_to_timespec(inode->i_last_write_time);
444 ret = utimensat(AT_FDCWD, output_path, ts, AT_SYMLINK_NOFOLLOW);
452 /* utimensat() not implemented or not available */
454 /* Convert the WIM timestamps, which are accurate to 100
455 * nanoseconds, into `struct timeval's for passing to lutimes(),
456 * which is accurate to 1 microsecond. */
457 struct timeval tv[2];
458 tv[0] = wim_timestamp_to_timeval(inode->i_last_access_time);
459 tv[1] = wim_timestamp_to_timeval(inode->i_last_write_time);
460 ret = lutimes(output_path, tv);
467 /* utimensat() and lutimes() both not implemented or not
470 /* Convert the WIM timestamps, which are accurate to 100
471 * nanoseconds, into a `struct utimbuf's for passing to
472 * utime(), which is accurate to 1 second. */
474 buf.actime = wim_timestamp_to_unix(inode->i_last_access_time);
475 buf.modtime = wim_timestamp_to_unix(inode->i_last_write_time);
476 ret = utime(output_path, &buf);
479 if (ret && args->num_utime_warnings < 10) {
480 WARNING_WITH_ERRNO("Failed to set timestamp on file `%s'",
482 args->num_utime_warnings++;
486 #endif /* !__WIN32__ */
488 /* Extracts a file, directory, or symbolic link from the WIM archive. */
490 apply_dentry_normal(struct wim_dentry *dentry, void *arg)
492 struct apply_args *args = arg;
497 len = tstrlen(args->target);
498 if (dentry_is_root(dentry)) {
499 output_path = (tchar*)args->target;
501 output_path = alloca(len * sizeof(tchar) + dentry->full_path_nbytes +
503 memcpy(output_path, args->target, len * sizeof(tchar));
504 memcpy(output_path + len, dentry->_full_path, dentry->full_path_nbytes);
505 len += dentry->full_path_nbytes / sizeof(tchar);
506 output_path[len] = T('\0');
509 return win32_do_apply_dentry(output_path, len, dentry, args);
511 return unix_do_apply_dentry(output_path, len, dentry, args);
516 /* Apply timestamps to an extracted file or directory */
518 apply_dentry_timestamps_normal(struct wim_dentry *dentry, void *arg)
520 struct apply_args *args = arg;
524 len = tstrlen(args->target);
525 if (dentry_is_root(dentry)) {
526 output_path = (tchar*)args->target;
528 if (!dentry_full_path(dentry))
529 return WIMLIB_ERR_NOMEM;
530 output_path = alloca(len * sizeof(tchar) + dentry->full_path_nbytes +
532 memcpy(output_path, args->target, len * sizeof(tchar));
533 memcpy(output_path + len, dentry->_full_path, dentry->full_path_nbytes);
534 len += dentry->full_path_nbytes / sizeof(tchar);
535 output_path[len] = T('\0');
540 return win32_do_apply_dentry_timestamps(output_path, len, dentry, args);
542 return unix_do_apply_dentry_timestamps(output_path, len, dentry, args);
546 /* Extract a dentry if it hasn't already been extracted, and either the dentry
547 * has no streams or WIMLIB_EXTRACT_FLAG_NO_STREAMS is not specified. */
549 maybe_apply_dentry(struct wim_dentry *dentry, void *arg)
551 struct apply_args *args = arg;
554 if (dentry->is_extracted)
557 ret = calculate_dentry_full_path(dentry);
561 if (args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_STREAMS)
562 if (inode_unnamed_lte_resolved(dentry->d_inode))
565 if ((args->extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE) &&
566 args->progress_func) {
567 args->progress.extract.cur_path = dentry->_full_path;
568 args->progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DENTRY,
571 ret = args->apply_dentry(dentry, args);
573 dentry->is_extracted = 1;
578 calculate_bytes_to_extract(struct list_head *stream_list,
580 union wimlib_progress_info *progress)
582 struct wim_lookup_table_entry *lte;
586 /* For each stream to be extracted... */
587 list_for_each_entry(lte, stream_list, extraction_list) {
589 (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
591 /* In the symlink or hard link extraction mode, each
592 * stream will be extracted one time regardless of how
593 * many dentries share the stream. */
594 wimlib_assert(!(extract_flags & WIMLIB_EXTRACT_FLAG_NTFS));
595 if (!lte->extracted_file) {
597 total_bytes += wim_resource_size(lte);
600 num_streams += lte->out_refcnt;
601 total_bytes += lte->out_refcnt * wim_resource_size(lte);
604 progress->extract.num_streams = num_streams;
605 progress->extract.total_bytes = total_bytes;
606 progress->extract.completed_bytes = 0;
610 maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte,
611 struct list_head *stream_list)
613 if (++lte->out_refcnt == 1) {
614 INIT_LIST_HEAD(<e->inode_list);
615 list_add_tail(<e->extraction_list, stream_list);
620 inode_find_streams_for_extraction(struct wim_inode *inode,
621 struct list_head *stream_list,
624 struct wim_lookup_table_entry *lte;
625 bool inode_added = false;
627 lte = inode_unnamed_lte_resolved(inode);
629 maybe_add_stream_for_extraction(lte, stream_list);
630 list_add_tail(&inode->i_lte_inode_list, <e->inode_list);
634 if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
635 for (unsigned i = 0; i < inode->i_num_ads; i++) {
636 if (inode->i_ads_entries[i].stream_name_nbytes != 0) {
637 lte = inode->i_ads_entries[i].lte;
639 maybe_add_stream_for_extraction(lte,
642 list_add_tail(&inode->i_lte_inode_list,
654 find_streams_for_extraction(struct wim_image_metadata *imd,
655 struct list_head *stream_list,
656 struct wim_lookup_table *lookup_table,
659 struct wim_inode *inode;
660 struct wim_dentry *dentry;
662 for_lookup_table_entry(lookup_table, lte_zero_out_refcnt, NULL);
663 INIT_LIST_HEAD(stream_list);
664 image_for_each_inode(inode, imd) {
665 if (!inode->i_resolved)
666 inode_resolve_ltes(inode, lookup_table);
667 inode_for_each_dentry(dentry, inode)
668 dentry->is_extracted = 0;
669 inode_find_streams_for_extraction(inode, stream_list,
674 struct apply_operations {
675 int (*apply_dentry)(struct wim_dentry *dentry, void *arg);
676 int (*apply_dentry_timestamps)(struct wim_dentry *dentry, void *arg);
679 static const struct apply_operations normal_apply_operations = {
680 .apply_dentry = apply_dentry_normal,
681 .apply_dentry_timestamps = apply_dentry_timestamps_normal,
685 static const struct apply_operations ntfs_apply_operations = {
686 .apply_dentry = apply_dentry_ntfs,
687 .apply_dentry_timestamps = apply_dentry_timestamps_ntfs,
692 apply_stream_list(struct list_head *stream_list,
693 struct apply_args *args,
694 const struct apply_operations *ops,
695 wimlib_progress_func_t progress_func)
697 uint64_t bytes_per_progress = args->progress.extract.total_bytes / 100;
698 uint64_t next_progress = bytes_per_progress;
699 struct wim_lookup_table_entry *lte;
700 struct wim_inode *inode;
701 struct wim_dentry *dentry;
704 /* This complicated loop is essentially looping through the dentries,
705 * although dentries may be visited more than once (if a dentry contains
706 * two different nonempty streams) or not at all (if a dentry contains
707 * no non-empty streams).
709 * The outer loop is over the distinct streams to be extracted so that
710 * sequential reading of the WIM can be implemented. */
712 /* For each distinct stream to be extracted */
713 list_for_each_entry(lte, stream_list, extraction_list) {
714 /* For each inode that contains the stream */
715 list_for_each_entry(inode, <e->inode_list, i_lte_inode_list) {
716 /* For each dentry that points to the inode */
717 inode_for_each_dentry(dentry, inode) {
718 /* Extract the dentry if it was not already
720 ret = maybe_apply_dentry(dentry, args);
724 args->progress.extract.completed_bytes >= next_progress)
726 progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_STREAMS,
728 if (args->progress.extract.completed_bytes >=
729 args->progress.extract.total_bytes)
731 next_progress = ~0ULL;
734 min (args->progress.extract.completed_bytes +
736 args->progress.extract.total_bytes);
746 sort_stream_list_by_wim_position(struct list_head *stream_list)
748 struct list_head *cur;
750 struct wim_lookup_table_entry **array;
755 list_for_each(cur, stream_list)
757 array_size = num_streams * sizeof(array[0]);
758 array = MALLOC(array_size);
760 ERROR("Failed to allocate %zu bytes to sort stream entries",
762 return WIMLIB_ERR_NOMEM;
764 cur = stream_list->next;
765 for (i = 0; i < num_streams; i++) {
766 array[i] = container_of(cur, struct wim_lookup_table_entry, extraction_list);
770 qsort(array, num_streams, sizeof(array[0]), cmp_streams_by_wim_position);
772 INIT_LIST_HEAD(stream_list);
773 for (i = 0; i < num_streams; i++)
774 list_add_tail(&array[i]->extraction_list, stream_list);
780 /* Extracts the image @image from the WIM @w to the directory or NTFS volume
783 extract_single_image(WIMStruct *w, int image,
784 const tchar *target, int extract_flags,
785 wimlib_progress_func_t progress_func)
788 struct list_head stream_list;
790 struct apply_args args;
791 const struct apply_operations *ops;
793 memset(&args, 0, sizeof(args));
796 args.target = target;
797 args.extract_flags = extract_flags;
798 args.progress_func = progress_func;
801 args.progress.extract.wimfile_name = w->filename;
802 args.progress.extract.image = image;
803 args.progress.extract.extract_flags = (extract_flags &
804 WIMLIB_EXTRACT_MASK_PUBLIC);
805 args.progress.extract.image_name = wimlib_get_image_name(w, image);
806 args.progress.extract.target = target;
810 if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
811 args.vol = ntfs_mount(target, 0);
813 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%"TS"'",
815 return WIMLIB_ERR_NTFS_3G;
817 ops = &ntfs_apply_operations;
820 ops = &normal_apply_operations;
822 ret = select_wim_image(w, image);
826 /* Build a list of the streams that need to be extracted */
827 find_streams_for_extraction(wim_get_current_image_metadata(w),
829 w->lookup_table, extract_flags);
831 /* Calculate the number of bytes of data that will be extracted */
832 calculate_bytes_to_extract(&stream_list, extract_flags,
836 progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN,
840 /* If a sequential extraction was specified, sort the streams to be
841 * extracted by their position in the WIM file, so that the WIM file can
842 * be read sequentially. */
843 if (extract_flags & WIMLIB_EXTRACT_FLAG_SEQUENTIAL) {
844 ret = sort_stream_list_by_wim_position(&stream_list);
846 WARNING("Falling back to non-sequential extraction");
847 extract_flags &= ~WIMLIB_EXTRACT_FLAG_SEQUENTIAL;
852 progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
856 /* Make the directory structure and extract empty files */
857 args.extract_flags |= WIMLIB_EXTRACT_FLAG_NO_STREAMS;
858 args.apply_dentry = ops->apply_dentry;
859 ret = for_dentry_in_tree(wim_root_dentry(w), maybe_apply_dentry, &args);
860 args.extract_flags &= ~WIMLIB_EXTRACT_FLAG_NO_STREAMS;
865 progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END,
869 /* Extract non-empty files */
870 ret = apply_stream_list(&stream_list, &args, ops, progress_func);
875 progress_func(WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
879 /* Apply timestamps */
880 ret = for_dentry_in_tree_depth(wim_root_dentry(w),
881 ops->apply_dentry_timestamps, &args);
886 progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END,
891 /* Unmount the NTFS volume */
892 if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
893 if (ntfs_umount(args.vol, FALSE) != 0) {
894 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%"TS"'",
897 ret = WIMLIB_ERR_NTFS_3G;
904 static const tchar *filename_forbidden_chars =
913 /* This function checks if it is okay to use a WIM image's name as a directory
916 image_name_ok_as_dir(const tchar *image_name)
918 return image_name && *image_name &&
919 !tstrpbrk(image_name, filename_forbidden_chars);
922 /* Extracts all images from the WIM to the directory @target, with the images
923 * placed in subdirectories named by their image names. */
925 extract_all_images(WIMStruct *w,
928 wimlib_progress_func_t progress_func)
930 size_t image_name_max_len = max(xml_get_max_image_name_len(w), 20);
931 size_t output_path_len = tstrlen(target);
932 tchar buf[output_path_len + 1 + image_name_max_len + 1];
935 const tchar *image_name;
937 ret = extract_directory(NULL, target, true);
941 tmemcpy(buf, target, output_path_len);
942 buf[output_path_len] = T('/');
943 for (image = 1; image <= w->hdr.image_count; image++) {
944 image_name = wimlib_get_image_name(w, image);
945 if (image_name_ok_as_dir(image_name)) {
946 tstrcpy(buf + output_path_len + 1, image_name);
948 /* Image name is empty, or contains forbidden
950 tsprintf(buf + output_path_len + 1, T("%d"), image);
952 ret = extract_single_image(w, image, buf, extract_flags,
960 /* Extracts a single image or all images from a WIM file to a directory or NTFS
963 wimlib_extract_image(WIMStruct *w,
967 WIMStruct **additional_swms,
968 unsigned num_additional_swms,
969 wimlib_progress_func_t progress_func)
971 struct wim_lookup_table *joined_tab, *w_tab_save;
975 return WIMLIB_ERR_INVALID_PARAM;
977 extract_flags &= WIMLIB_EXTRACT_MASK_PUBLIC;
979 if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
980 == (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
981 return WIMLIB_ERR_INVALID_PARAM;
984 if (extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
985 ERROR("Extracting UNIX data is not supported on Windows");
986 return WIMLIB_ERR_INVALID_PARAM;
988 if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
989 ERROR("Linked extraction modes are not supported on Windows");
990 return WIMLIB_ERR_INVALID_PARAM;
994 if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
996 if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))) {
997 ERROR("Cannot specify symlink or hardlink flags when applying\n"
998 " directly to a NTFS volume");
999 return WIMLIB_ERR_INVALID_PARAM;
1001 if (image == WIMLIB_ALL_IMAGES) {
1002 ERROR("Can only apply a single image when applying "
1003 "directly to a NTFS volume");
1004 return WIMLIB_ERR_INVALID_PARAM;
1006 if (extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
1007 ERROR("Cannot restore UNIX-specific data in the NTFS extraction mode");
1008 return WIMLIB_ERR_INVALID_PARAM;
1011 ERROR("wimlib was compiled without support for NTFS-3g, so");
1012 ERROR("we cannot apply a WIM image directly to a NTFS volume");
1013 return WIMLIB_ERR_UNSUPPORTED;
1017 ret = verify_swm_set(w, additional_swms, num_additional_swms);
1021 ret = wim_checksum_unhashed_streams(w);
1025 if (num_additional_swms) {
1026 ret = new_joined_lookup_table(w, additional_swms,
1027 num_additional_swms, &joined_tab);
1030 w_tab_save = w->lookup_table;
1031 w->lookup_table = joined_tab;
1034 if (image == WIMLIB_ALL_IMAGES) {
1035 extract_flags |= WIMLIB_EXTRACT_FLAG_MULTI_IMAGE;
1036 ret = extract_all_images(w, target, extract_flags,
1039 extract_flags &= ~WIMLIB_EXTRACT_FLAG_MULTI_IMAGE;
1040 ret = extract_single_image(w, image, target, extract_flags,
1044 if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
1045 WIMLIB_EXTRACT_FLAG_HARDLINK))
1047 for_lookup_table_entry(w->lookup_table,
1048 lte_free_extracted_file,
1052 if (num_additional_swms) {
1053 free_lookup_table(w->lookup_table);
1054 w->lookup_table = w_tab_save;