* extract.c
*
* Support for extracting WIM files.
+ *
+ * This code does NOT contain any filesystem-specific features. In particular,
+ * security information (i.e. file permissions) and alternate data streams are
+ * ignored, except possibly to read an alternate data stream that contains
+ * symbolic link data.
*/
/*
* 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
- * terms of the GNU Lesser General Public License as published by the Free
- * Software Foundation; either version 2.1 of the License, or (at your option)
+ * terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option)
* any later version.
*
* wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
-#include "wimlib_internal.h"
+
+#include "config.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+#ifdef HAVE_UTIME_H
+#include <utime.h>
+#endif
+
+
+#include <unistd.h>
+
#include "dentry.h"
#include "lookup_table.h"
+#include "timestamp.h"
+#include "wimlib_internal.h"
#include "xml.h"
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <string.h>
-#include <errno.h>
+#ifdef WITH_NTFS_3G
+#include <ntfs-3g/volume.h>
+#endif
-/*
- * Extracts a regular file from the WIM archive.
- *
- * @dentry: The directory entry for the file, which must be a
- * regular file.
- * @output_path: The path to which the file is to be extracted.
- * @lookup_table: The lookup table for the WIM file.
- * @wim_fp: The FILE* for the WIM, opened for reading.
- * @wim_ctype: The type of compression used in the WIM.
- * @link_type: One of WIM_LINK_TYPE_*; specifies what to do with
- * files that are hard-linked inside the WIM.
- * @is_multi_image_extraction:
- * True if the image currently being extracted is just one
- * image of a multi-image extraction. This is needed so
- * that cross-image symbolic links can be created
- * correctly.
- */
-static int extract_regular_file(WIMStruct *w,
- const struct dentry *dentry,
- const char *output_path)
+static int extract_regular_file_linked(struct dentry *dentry,
+ const char *output_path,
+ struct apply_args *args,
+ struct lookup_table_entry *lte)
{
- struct lookup_table *lookup_table;
- int link_type;
- bool is_multi_image_extraction;
- struct lookup_table_entry *lte;
- int ret;
- int out_fd;
- const struct resource_entry *res_entry;
-
- lookup_table = w->lookup_table;
- link_type = w->link_type;
- is_multi_image_extraction = w->is_multi_image_extraction;
- lte = lookup_resource(lookup_table, dentry->hash);
-
- /* If we already extracted the same file or a hard link copy of it, we
- * may be able to simply create a link. The exact action is specified
- * by the current @link_type. */
- if (link_type != WIM_LINK_TYPE_NONE && lte && lte->out_refcnt != 0) {
- wimlib_assert(lte->file_on_disk);
-
- if (link_type == WIM_LINK_TYPE_HARD) {
- if (link(lte->file_on_disk, output_path) != 0) {
- ERROR_WITH_ERRNO("Failed to hard link "
- "`%s' to `%s'",
- output_path, lte->file_on_disk);
- return WIMLIB_ERR_LINK;
- }
- } else {
- int num_path_components;
- int num_output_dir_path_components;
- size_t file_on_disk_len;
- char *p;
- const char *p2;
- size_t i;
-
- num_path_components =
- get_num_path_components(dentry->full_path_utf8) - 1;
- num_output_dir_path_components =
- get_num_path_components(w->output_dir);
-
- if (is_multi_image_extraction) {
- num_path_components++;
- num_output_dir_path_components--;
- }
- file_on_disk_len = strlen(lte->file_on_disk);
+ /* This mode overrides the normal hard-link extraction and
+ * instead either symlinks or hardlinks *all* identical files in
+ * the WIM, even if they are in a different image (in the case
+ * of a multi-image extraction) */
+
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_HARDLINK) {
+ if (link(lte->extracted_file, output_path) != 0) {
+ ERROR_WITH_ERRNO("Failed to hard link "
+ "`%s' to `%s'",
+ output_path, lte->extracted_file);
+ return WIMLIB_ERR_LINK;
+ }
+ } else {
+ int num_path_components;
+ int num_output_dir_path_components;
+ size_t extracted_file_len;
+ char *p;
+ const char *p2;
+ size_t i;
+
+ num_path_components =
+ get_num_path_components(dentry->full_path_utf8) - 1;
+ num_output_dir_path_components =
+ get_num_path_components(args->target);
+
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_MULTI_IMAGE) {
+ num_path_components++;
+ num_output_dir_path_components--;
+ }
+ extracted_file_len = strlen(lte->extracted_file);
+
+ char buf[extracted_file_len + 3 * num_path_components + 1];
+ p = &buf[0];
+
+ for (i = 0; i < num_path_components; i++) {
+ *p++ = '.';
+ *p++ = '.';
+ *p++ = '/';
+ }
+ p2 = lte->extracted_file;
+ while (*p2 == '/')
+ p2++;
+ while (num_output_dir_path_components--)
+ p2 = path_next_part(p2, NULL);
+ strcpy(p, p2);
+ if (symlink(buf, output_path) != 0) {
+ ERROR_WITH_ERRNO("Failed to symlink `%s' to "
+ "`%s'",
+ buf, lte->extracted_file);
+ return WIMLIB_ERR_LINK;
+ }
+ }
+ return 0;
+}
- char buf[file_on_disk_len + 3 * num_path_components + 1];
- p = &buf[0];
+static int extract_regular_file_unlinked(struct dentry *dentry,
+ struct apply_args *args,
+ const char *output_path,
+ struct lookup_table_entry *lte)
+{
+ /* Normal mode of extraction. Regular files and hard links are
+ * extracted in the way that they appear in the WIM. */
+
+ int out_fd;
+ int ret;
+ struct inode *inode = dentry->d_inode;
- for (i = 0; i < num_path_components; i++) {
- *p++ = '.';
- *p++ = '.';
- *p++ = '/';
+ if (!((args->extract_flags & WIMLIB_EXTRACT_FLAG_MULTI_IMAGE)
+ && (args->extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
+ WIMLIB_EXTRACT_FLAG_HARDLINK))))
+ {
+ /* If the dentry is one of a hard link set of at least 2
+ * dentries and one of the other dentries has already been
+ * extracted, make a hard link to the file corresponding to this
+ * already-extracted directory. Otherwise, extract the file,
+ * and set the inode->extracted_file field so that other
+ * dentries in the hard link group can link to it. */
+ if (inode->link_count > 1) {
+ if (inode->extracted_file) {
+ DEBUG("Extracting hard link `%s' => `%s'",
+ output_path, inode->extracted_file);
+ if (link(inode->extracted_file, output_path) != 0) {
+ ERROR_WITH_ERRNO("Failed to hard link "
+ "`%s' to `%s'",
+ output_path,
+ inode->extracted_file);
+ return WIMLIB_ERR_LINK;
+ }
+ return 0;
}
- p2 = lte->file_on_disk;
- while (*p2 == '/')
- p2++;
- while (num_output_dir_path_components--)
- p2 = path_next_part(p2, NULL);
- strcpy(p, p2);
- if (symlink(buf, output_path) != 0) {
- ERROR_WITH_ERRNO("Failed to symlink `%s' to "
- "`%s'",
- buf, lte->file_on_disk);
- return WIMLIB_ERR_LINK;
+ FREE(inode->extracted_file);
+ inode->extracted_file = STRDUP(output_path);
+ if (!inode->extracted_file) {
+ ERROR("Failed to allocate memory for filename");
+ return WIMLIB_ERR_NOMEM;
}
-
}
- return 0;
- }
+ }
- /* Otherwise, we must actually extract the file contents. */
+ /* Extract the contents of the file to @output_path. */
out_fd = open(output_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (out_fd == -1) {
return WIMLIB_ERR_OPEN;
}
- /* Extract empty file, with no lookup table entry... */
if (!lte) {
+ /* Empty file with no lookup table entry */
DEBUG("Empty file `%s'.", output_path);
ret = 0;
- goto done;
+ goto out;
}
- res_entry = <e->resource_entry;
-
- ret = extract_resource_to_fd(w, res_entry, out_fd,
- res_entry->original_size);
-
+ ret = extract_full_wim_resource_to_fd(lte, out_fd);
if (ret != 0) {
ERROR("Failed to extract resource to `%s'", output_path);
- goto done;
+ goto out;
+ }
+ args->progress.extract.completed_bytes += wim_resource_size(lte);
+out:
+ if (close(out_fd) != 0) {
+ ERROR_WITH_ERRNO("Failed to close file `%s'", output_path);
+ ret = WIMLIB_ERR_WRITE;
}
-
- /* Mark the lookup table entry to indicate this file has been extracted. */
- lte->out_refcnt++;
- FREE(lte->file_on_disk);
- lte->file_on_disk = STRDUP(output_path);
- if (lte->file_on_disk)
- ret = 0;
- else
- ret = WIMLIB_ERR_NOMEM;
-done:
- close(out_fd);
return ret;
}
-/*
- * Extracts a directory from the WIM archive.
+/*
+ * Extracts a regular file from the WIM archive.
+ */
+static int extract_regular_file(struct dentry *dentry,
+ struct apply_args *args,
+ const char *output_path)
+{
+ struct lookup_table_entry *lte;
+ const struct inode *inode = dentry->d_inode;
+
+ lte = inode_unnamed_lte_resolved(inode);
+
+ if (lte && (args->extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
+ WIMLIB_EXTRACT_FLAG_HARDLINK)))
+ {
+ if (lte->extracted_file) {
+ return extract_regular_file_linked(dentry, output_path, args, lte);
+ } else {
+ lte->extracted_file = STRDUP(output_path);
+ if (!lte->extracted_file)
+ return WIMLIB_ERR_NOMEM;
+ }
+ }
+ return extract_regular_file_unlinked(dentry, args, output_path, lte);
+}
+
+static int extract_symlink(struct dentry *dentry,
+ struct apply_args *args,
+ const char *output_path)
+{
+ char target[4096];
+ ssize_t ret = inode_readlink(dentry->d_inode, target,
+ sizeof(target), args->w, 0);
+ struct lookup_table_entry *lte;
+
+ if (ret <= 0) {
+ ERROR("Could not read the symbolic link from dentry `%s'",
+ dentry->full_path_utf8);
+ return WIMLIB_ERR_INVALID_DENTRY;
+ }
+ ret = symlink(target, output_path);
+ if (ret != 0) {
+ ERROR_WITH_ERRNO("Failed to symlink `%s' to `%s'",
+ output_path, target);
+ return WIMLIB_ERR_LINK;
+ }
+ lte = inode_unnamed_lte_resolved(dentry->d_inode);
+ args->progress.extract.completed_bytes += wim_resource_size(lte);
+ return 0;
+}
+
+/*
+ * Extracts a directory from the WIM archive.
*
* @dentry: The directory entry for the directory.
* @output_path: The path to which the directory is to be extracted to.
- * @return: True on success, false on failure.
+ * @return: True on success, false on failure.
*/
-static int extract_directory(struct dentry *dentry, const char *output_path)
+static int extract_directory(const char *output_path, bool is_root)
{
- /* Compute the output path directory to the directory. */
- if (mkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) != 0)
- {
- switch (errno) {
- case EEXIST: /* Already existing directory is OK */
- case EACCES: /* We may have permissions to extract files inside
- the directory, but not for the directory
- itself. */
+ int ret;
+ struct stat stbuf;
+ ret = stat(output_path, &stbuf);
+ if (ret == 0) {
+ if (S_ISDIR(stbuf.st_mode)) {
+ /*if (!is_root)*/
+ /*WARNING("`%s' already exists", output_path);*/
return 0;
- default:
- ERROR_WITH_ERRNO("Cannot create directory `%s'",
- output_path);
+ } else {
+ ERROR("`%s' is not a directory", output_path);
return WIMLIB_ERR_MKDIR;
}
+ } else {
+ if (errno != ENOENT) {
+ ERROR_WITH_ERRNO("Failed to stat `%s'", output_path);
+ return WIMLIB_ERR_STAT;
+ }
+ }
+ /* Compute the output path directory to the directory. */
+ if (mkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP |
+ S_IROTH | S_IXOTH) != 0) {
+ ERROR_WITH_ERRNO("Cannot create directory `%s'",
+ output_path);
+ return WIMLIB_ERR_MKDIR;
}
return 0;
}
-
-/*
- * Extracts a file or directory from the WIM archive. For use in
- * for_dentry_in_tree().
- *
- * @dentry: The dentry to extract.
- * @arg: A pointer to the WIMStruct for the WIM file.
+/*
+ * Extracts a file, directory, or symbolic link from the WIM archive. For use
+ * in for_dentry_in_tree().
*/
-static int extract_regular_file_or_directory(struct dentry *dentry, void *arg)
+static int apply_dentry_normal(struct dentry *dentry, void *arg)
{
- WIMStruct *w = (WIMStruct*)arg;
- size_t len = strlen(w->output_dir);
+ struct apply_args *args = arg;
+ int extract_flags = args->extract_flags;
+ struct inode *inode = dentry->d_inode;
+ size_t len;
+ int ret;
+
+ if (dentry->is_extracted)
+ return 0;
+
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_NO_STREAMS)
+ if (inode_unnamed_lte_resolved(inode))
+ return 0;
+
+ if ((extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE) &&
+ args->progress_func)
+ {
+ args->progress.extract.cur_path = dentry->full_path_utf8;
+ args->progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DENTRY,
+ &args->progress);
+ }
+
+ len = strlen(args->target);
char output_path[len + dentry->full_path_utf8_len + 1];
+ memcpy(output_path, args->target, len);
+ memcpy(output_path + len, dentry->full_path_utf8, dentry->full_path_utf8_len);
+ output_path[len + dentry->full_path_utf8_len] = '\0';
- if (w->verbose)
- puts(dentry->full_path_utf8);
+ if (inode_is_symlink(inode))
+ ret = extract_symlink(dentry, args, output_path);
+ else if (inode_is_directory(inode))
+ ret = extract_directory(output_path, false);
+ else
+ ret = extract_regular_file(dentry, args, output_path);
+ if (ret == 0)
+ dentry->is_extracted = 1;
+ return ret;
+}
+
+/* Apply timestamp to extracted file */
+static int apply_dentry_timestamps_normal(struct dentry *dentry, void *arg)
+{
+ struct apply_args *args = arg;
+ size_t len = strlen(args->target);
+ char output_path[len + dentry->full_path_utf8_len + 1];
+ const struct inode *inode = dentry->d_inode;
+ int ret;
- memcpy(output_path, w->output_dir, len);
+ memcpy(output_path, args->target, len);
memcpy(output_path + len, dentry->full_path_utf8, dentry->full_path_utf8_len);
output_path[len + dentry->full_path_utf8_len] = '\0';
+ struct timeval tv[2];
+ wim_timestamp_to_timeval(inode->last_access_time, &tv[0]);
+ wim_timestamp_to_timeval(inode->last_write_time, &tv[1]);
+ #ifdef HAVE_LUTIMES
+ ret = lutimes(output_path, tv);
+ #else
+ ret = -1;
+ errno = ENOSYS;
+ #endif
+ if (ret != 0) {
+ #ifdef HAVE_UTIME
+ if (errno == ENOSYS) {
+ struct utimbuf buf;
+ buf.actime = wim_timestamp_to_unix(inode->last_access_time);
+ buf.modtime = wim_timestamp_to_unix(inode->last_write_time);
+ if (utime(output_path, &buf) == 0)
+ return 0;
+ }
+ #endif
+ if (errno != ENOSYS || args->num_lutimes_warnings < 10) {
+ /*WARNING("Failed to set timestamp on file `%s': %s",*/
+ /*output_path, strerror(errno));*/
+ args->num_lutimes_warnings++;
+ }
+ }
+ return 0;
+}
+
+static int cmp_streams_by_wim_position(const void *p1, const void *p2)
+{
+ const struct lookup_table_entry *lte1, *lte2;
+ lte1 = *(const struct lookup_table_entry**)p1;
+ lte2 = *(const struct lookup_table_entry**)p2;
+ if (lte1->resource_entry.offset < lte2->resource_entry.offset)
+ return -1;
+ else if (lte1->resource_entry.offset > lte2->resource_entry.offset)
+ return 1;
+ else
+ return 0;
+}
- if (dentry_is_regular_file(dentry)) {
- return extract_regular_file(w, dentry, output_path);
- } else {
- if (dentry_is_root(dentry)) /* Root doesn't need to be extracted. */
- return 0;
- else
- return extract_directory(dentry, output_path);
+static int sort_stream_list_by_wim_position(struct list_head *stream_list)
+{
+ struct list_head *cur;
+ size_t num_streams;
+ struct lookup_table_entry **array;
+ size_t i;
+ size_t array_size;
+
+ num_streams = 0;
+ list_for_each(cur, stream_list)
+ num_streams++;
+ array_size = num_streams * sizeof(array[0]);
+ array = MALLOC(array_size);
+ if (!array) {
+ ERROR("Failed to allocate %zu bytes to sort stream entries",
+ array_size);
+ return WIMLIB_ERR_NOMEM;
}
+ cur = stream_list->next;
+ for (i = 0; i < num_streams; i++) {
+ array[i] = container_of(cur, struct lookup_table_entry, staging_list);
+ cur = cur->next;
+ }
+
+ qsort(array, num_streams, sizeof(array[0]), cmp_streams_by_wim_position);
+
+ INIT_LIST_HEAD(stream_list);
+ for (i = 0; i < num_streams; i++)
+ list_add_tail(&array[i]->staging_list, stream_list);
+ FREE(array);
+ return 0;
}
-static int extract_single_image(WIMStruct *w, int image)
+static void calculate_bytes_to_extract(struct list_head *stream_list,
+ int extract_flags,
+ union wimlib_progress_info *progress)
{
- DEBUG("Extracting image %d", image);
+ struct lookup_table_entry *lte;
+ struct inode *inode;
+ u64 total_bytes = 0;
+ u64 num_streams = 0;
+
+ /* For each stream to be extracted... */
+ list_for_each_entry(lte, stream_list, staging_list) {
+ if (extract_flags &
+ (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
+ {
+ /* In the symlink or hard link extraction mode, each
+ * stream will be extracted one time regardless of how
+ * many dentries share the stream. */
+ wimlib_assert(!(extract_flags & WIMLIB_EXTRACT_FLAG_NTFS));
+ if (!lte->extracted_file) {
+ num_streams++;
+ total_bytes += wim_resource_size(lte);
+ }
+ } else {
+ list_for_each_entry(inode, <e->inode_list,
+ lte_inode_list)
+ {
+ num_streams++;
+ total_bytes += wim_resource_size(lte);
+ }
+ }
+ }
+ progress->extract.num_streams = num_streams;
+ progress->extract.total_bytes = total_bytes;
+ progress->extract.completed_bytes = 0;
+}
+
+static void maybe_add_stream_for_extraction(struct lookup_table_entry *lte,
+ struct list_head *stream_list)
+{
+ if (lte->out_refcnt == 0) {
+ lte->out_refcnt = 1;
+ INIT_LIST_HEAD(<e->inode_list);
+ list_add_tail(<e->staging_list, stream_list);
+ }
+}
+
+static void inode_find_streams_for_extraction(struct inode *inode,
+ struct list_head *stream_list,
+ int extract_flags)
+{
+ struct lookup_table_entry *lte;
+ bool inode_added = false;
+
+ lte = inode_unnamed_lte_resolved(inode);
+ if (lte) {
+ maybe_add_stream_for_extraction(lte, stream_list);
+ list_add_tail(&inode->lte_inode_list, <e->inode_list);
+ inode_added = true;
+ }
+#ifdef WITH_NTFS_3G
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
+ for (unsigned i = 0; i < inode->num_ads; i++) {
+ if (inode->ads_entries[i].stream_name_len != 0) {
+ lte = inode_stream_lte_resolved(inode, i + 1);
+ if (lte) {
+ maybe_add_stream_for_extraction(lte,
+ stream_list);
+ if (!inode_added) {
+ list_add_tail(&inode->lte_inode_list,
+ <e->inode_list);
+ inode_added = true;
+ }
+ }
+ }
+ }
+ }
+#endif
+}
+
+static void find_streams_for_extraction(struct hlist_head *inode_list,
+ struct list_head *stream_list,
+ struct lookup_table *lookup_table,
+ int extract_flags)
+{
+ struct inode *inode;
+ struct hlist_node *cur;
+ struct dentry *dentry;
+
+ for_lookup_table_entry(lookup_table, lte_zero_out_refcnt, NULL);
+ INIT_LIST_HEAD(stream_list);
+ hlist_for_each_entry(inode, cur, inode_list, hlist) {
+ if (!inode->resolved)
+ inode_resolve_ltes(inode, lookup_table);
+ inode_for_each_dentry(dentry, inode)
+ dentry->is_extracted = 0;
+ inode_find_streams_for_extraction(inode, stream_list,
+ extract_flags);
+ }
+}
+
+struct apply_operations {
+ int (*apply_dentry)(struct dentry *dentry, void *arg);
+ int (*apply_dentry_timestamps)(struct dentry *dentry, void *arg);
+};
+
+static const struct apply_operations normal_apply_operations = {
+ .apply_dentry = apply_dentry_normal,
+ .apply_dentry_timestamps = apply_dentry_timestamps_normal,
+};
+
+#ifdef WITH_NTFS_3G
+static const struct apply_operations ntfs_apply_operations = {
+ .apply_dentry = wim_apply_dentry_ntfs,
+ .apply_dentry_timestamps = wim_apply_dentry_timestamps,
+};
+#endif
+
+static int apply_stream_list(struct list_head *stream_list,
+ struct apply_args *args,
+ const struct apply_operations *ops,
+ wimlib_progress_func_t progress_func)
+{
+ uint64_t bytes_per_progress = args->progress.extract.total_bytes / 100;
+ uint64_t next_progress = bytes_per_progress;
+ struct lookup_table_entry *lte;
+ struct inode *inode;
+ struct dentry *dentry;
+ int ret = 0;
+ list_for_each_entry(lte, stream_list, staging_list) {
+ list_for_each_entry(inode, <e->inode_list, lte_inode_list) {
+ inode_for_each_dentry(dentry, inode) {
+ ret = ops->apply_dentry(dentry, args);
+ if (ret != 0)
+ goto out;
+ if (args->progress.extract.completed_bytes >= next_progress) {
+ progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_STREAMS,
+ &args->progress);
+ next_progress += bytes_per_progress;
+ }
+ }
+ }
+ }
+out:
+ return ret;
+}
+
+static int extract_single_image(WIMStruct *w, int image,
+ const char *target, int extract_flags,
+ wimlib_progress_func_t progress_func)
+{
int ret;
- ret = wimlib_select_image(w, image);
+ struct list_head stream_list;
+ struct hlist_head *inode_list;
+
+ struct apply_args args;
+ const struct apply_operations *ops;
+
+ args.w = w;
+ args.target = target;
+ args.extract_flags = extract_flags;
+ args.num_lutimes_warnings = 0;
+ args.target = target;
+ args.stream_list = &stream_list;
+ args.progress_func = progress_func;
+
+ if (progress_func) {
+ args.progress.extract.image = image;
+ args.progress.extract.image_name = wimlib_get_image_name(w, image);
+ args.progress.extract.target = target;
+ }
+
+#ifdef WITH_NTFS_3G
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
+ args.vol = ntfs_mount(target, 0);
+ if (!args.vol) {
+ ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s'", target);
+ return WIMLIB_ERR_NTFS_3G;
+ }
+ }
+#endif
+
+#ifdef WITH_NTFS_3G
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS)
+ ops = &ntfs_apply_operations;
+ else
+#endif
+ ops = &normal_apply_operations;
+
+ ret = select_wim_image(w, image);
if (ret != 0)
- return ret;
+ goto out;
+
+ inode_list = &w->image_metadata[image - 1].inode_list;
+ find_streams_for_extraction(inode_list,
+ &stream_list,
+ w->lookup_table,
+ extract_flags);
- return for_dentry_in_tree(wim_root_dentry(w),
- extract_regular_file_or_directory, w);
+ calculate_bytes_to_extract(&stream_list, extract_flags,
+ &args.progress);
+
+ if (progress_func) {
+ progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN,
+ &args.progress);
+ }
+
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_SEQUENTIAL) {
+ ret = sort_stream_list_by_wim_position(&stream_list);
+ if (ret != 0) {
+ WARNING("Falling back to non-sequential extraction");
+ extract_flags &= ~WIMLIB_EXTRACT_FLAG_SEQUENTIAL;
+ }
+ }
+
+ if (progress_func) {
+ progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
+ &args.progress);
+ }
+
+
+ args.extract_flags |= WIMLIB_EXTRACT_FLAG_NO_STREAMS;
+ ret = for_dentry_in_tree(wim_root_dentry(w), ops->apply_dentry, &args);
+ args.extract_flags &= ~WIMLIB_EXTRACT_FLAG_NO_STREAMS;
+ if (ret != 0)
+ goto out;
+
+ if (progress_func) {
+ progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END,
+ &args.progress);
+ }
+
+ ret = apply_stream_list(&stream_list, &args, ops, progress_func);
+ if (ret != 0)
+ goto out;
+
+ if (progress_func)
+ progress_func(WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS, NULL);
+
+ ret = for_dentry_in_tree_depth(wim_root_dentry(w),
+ ops->apply_dentry_timestamps, &args);
+ if (ret != 0)
+ goto out;
+
+ if (progress_func) {
+ progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END,
+ &args.progress);
+ }
+out:
+#ifdef WITH_NTFS_3G
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
+ if (ntfs_umount(args.vol, FALSE) != 0) {
+ ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", args.target);
+ if (ret == 0)
+ ret = WIMLIB_ERR_NTFS_3G;
+ }
+ }
+#endif
+ return ret;
}
-/* Extracts all images from the WIM to w->output_dir, with the images placed in
+/* Extracts all images from the WIM to @output_dir, with the images placed in
* subdirectories named by their image names. */
-static int extract_all_images(WIMStruct *w)
+static int extract_all_images(WIMStruct *w, const char *target,
+ int extract_flags,
+ wimlib_progress_func_t progress_func)
{
size_t image_name_max_len = max(xml_get_max_image_name_len(w), 20);
- size_t output_path_len = strlen(w->output_dir);
+ size_t output_path_len = strlen(target);
char buf[output_path_len + 1 + image_name_max_len + 1];
int ret;
int image;
const char *image_name;
- DEBUG("Attempting to extract all images from `%s'", w->filename);
+ ret = extract_directory(target, true);
+ if (ret != 0)
+ return ret;
- memcpy(buf, w->output_dir, output_path_len);
+ memcpy(buf, target, output_path_len);
buf[output_path_len] = '/';
for (image = 1; image <= w->hdr.image_count; image++) {
-
image_name = wimlib_get_image_name(w, image);
- if (*image_name) {
+ if (image_name && *image_name) {
strcpy(buf + output_path_len + 1, image_name);
} else {
/* Image name is empty. Use image number instead */
sprintf(buf + output_path_len + 1, "%d", image);
}
- ret = wimlib_set_output_dir(w, buf);
- if (ret != 0)
- goto done;
- ret = extract_single_image(w, image);
+ ret = extract_single_image(w, image, buf, extract_flags,
+ progress_func);
if (ret != 0)
- goto done;
+ return ret;
}
-done:
- /* Restore original output directory */
- buf[output_path_len + 1] = '\0';
- return wimlib_set_output_dir(w, buf);
+ return 0;
}
/* Extracts a single image or all images from a WIM file. */
-WIMLIBAPI int wimlib_extract_image(WIMStruct *w, int image)
+WIMLIBAPI int wimlib_extract_image(WIMStruct *w, int image,
+ const char *target,
+ int extract_flags,
+ WIMStruct **additional_swms,
+ unsigned num_additional_swms,
+ wimlib_progress_func_t progress_func)
{
- if (!w->output_dir) {
- ERROR("No output directory selected.");
- return WIMLIB_ERR_NOTDIR;
- }
- if (image == WIM_ALL_IMAGES) {
- w->is_multi_image_extraction = true;
- return extract_all_images(w);
- } else {
- w->is_multi_image_extraction = false;
- return extract_single_image(w, image);
- }
+ struct lookup_table *joined_tab, *w_tab_save;
+ int ret;
-}
+ if (!w || !target)
+ return WIMLIB_ERR_INVALID_PARAM;
-/* Set the output directory for WIM extraction. The directory is created using
- * mkdir(). Fails if directory cannot be created or already exists. */
-WIMLIBAPI int wimlib_set_output_dir(WIMStruct *w, const char *dir)
-{
- char *p;
- DEBUG("Setting output directory to `%s'", dir);
+ extract_flags &= WIMLIB_EXTRACT_MASK_PUBLIC;
- if (!dir) {
- ERROR("Must specify a directory!");
+ if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
+ == (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
return WIMLIB_ERR_INVALID_PARAM;
+
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
+#ifdef WITH_NTFS_3G
+ if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))) {
+ ERROR("Cannot specify symlink or hardlink flags when applying ");
+ ERROR("directly to a NTFS volume");
+ return WIMLIB_ERR_INVALID_PARAM;
+ }
+ if (image == WIMLIB_ALL_IMAGES) {
+ ERROR("Can only apply a single image when applying "
+ "directly to a NTFS volume");
+ return WIMLIB_ERR_INVALID_PARAM;
+ }
+#else
+ ERROR("wimlib was compiled without support for NTFS-3g, so");
+ ERROR("we cannot apply a WIM image directly to a NTFS volume");
+ return WIMLIB_ERR_UNSUPPORTED;
+#endif
}
- p = STRDUP(dir);
- if (!p) {
- ERROR("Out of memory");
- return WIMLIB_ERR_NOMEM;
+
+ ret = verify_swm_set(w, additional_swms, num_additional_swms);
+ if (ret != 0)
+ return ret;
+
+ if (num_additional_swms) {
+ ret = new_joined_lookup_table(w, additional_swms,
+ num_additional_swms, &joined_tab);
+ if (ret != 0)
+ return ret;
+ w_tab_save = w->lookup_table;
+ w->lookup_table = joined_tab;
}
- if (mkdir(dir, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) != 0) {
- if (errno == EEXIST) {
- DEBUG("`%s' already exists", dir);
- goto done;
- }
- ERROR_WITH_ERRNO("Cannot create directory `%s'", dir);
- FREE(p);
- return WIMLIB_ERR_MKDIR;
+ if (image == WIMLIB_ALL_IMAGES) {
+ extract_flags |= WIMLIB_EXTRACT_FLAG_MULTI_IMAGE;
+ ret = extract_all_images(w, target, extract_flags,
+ progress_func);
} else {
- DEBUG("Created directory `%s'", dir);
+ extract_flags &= ~WIMLIB_EXTRACT_FLAG_MULTI_IMAGE;
+ ret = extract_single_image(w, image, target, extract_flags,
+ progress_func);
}
-done:
- FREE(w->output_dir);
- w->output_dir = p;
- return 0;
-}
-WIMLIBAPI int wimlib_set_link_type(WIMStruct *w, int link_type)
-{
- switch (link_type) {
- case WIM_LINK_TYPE_NONE:
- case WIM_LINK_TYPE_HARD:
- case WIM_LINK_TYPE_SYMBOLIC:
- w->link_type = link_type;
- return 0;
- default:
- return WIMLIB_ERR_INVALID_PARAM;
+ if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
+ WIMLIB_EXTRACT_FLAG_HARDLINK))
+ {
+ for_lookup_table_entry(w->lookup_table,
+ lte_free_extracted_file,
+ NULL);
}
-}
+ if (num_additional_swms) {
+ free_lookup_table(w->lookup_table);
+ w->lookup_table = w_tab_save;
+ }
+ return ret;
+}
git://wimlib.net / wimlib / blobdiff