* extract_image.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.
*/
/*
- * Copyright (C) 2012, 2013 Biggers
+ * Copyright (C) 2012, 2013 Eric Biggers
*
* This file is part of wimlib, a library for working with WIM files.
*
#include "config.h"
#include <dirent.h>
+
+#ifdef __WIN32__
+# include "win32.h"
+#else
+# ifdef HAVE_UTIME_H
+# include <utime.h>
+# endif
+# include "timestamp.h"
+# include <sys/time.h>
+#endif
+
#include <errno.h>
#include <fcntl.h>
+#include <stdlib.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"
#ifdef WITH_NTFS_3G
-#include <ntfs-3g/volume.h>
+# include <ntfs-3g/volume.h>
#endif
-static int extract_regular_file_linked(struct wim_dentry *dentry,
- const char *output_path,
- struct apply_args *args,
- struct wim_lookup_table_entry *lte)
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+
+#ifndef __WIN32__
+static int
+extract_regular_file_linked(struct wim_dentry *dentry,
+ const mbchar *output_path,
+ struct apply_args *args,
+ struct wim_lookup_table_entry *lte)
{
/* This mode overrides the normal hard-link extraction and
* instead either symlinks or hardlinks *all* identical files in
int num_path_components;
int num_output_dir_path_components;
size_t extracted_file_len;
- char *p;
- const char *p2;
+ mbchar *p;
+ const mbchar *p2;
size_t i;
num_path_components =
- get_num_path_components(dentry->full_path_utf8) - 1;
+ get_num_path_components(dentry->full_path) - 1;
num_output_dir_path_components =
get_num_path_components(args->target);
}
extracted_file_len = strlen(lte->extracted_file);
- char buf[extracted_file_len + 3 * num_path_components + 1];
+ mbchar buf[extracted_file_len + 3 * num_path_components + 1];
p = &buf[0];
for (i = 0; i < num_path_components; i++) {
p2 = path_next_part(p2, NULL);
strcpy(p, p2);
if (symlink(buf, output_path) != 0) {
- ERROR_WITH_ERRNO("Failed to symlink `%s' to "
- "`%s'",
+ ERROR_WITH_ERRNO("Failed to symlink `%s' to `%s'",
buf, lte->extracted_file);
return WIMLIB_ERR_LINK;
}
return 0;
}
-static int symlink_apply_unix_data(const char *link,
- const struct wimlib_unix_data *unix_data)
+static int
+symlink_apply_unix_data(const mbchar *link,
+ const struct wimlib_unix_data *unix_data)
{
if (lchown(link, unix_data->uid, unix_data->gid)) {
if (errno == EPERM) {
return 0;
}
-static int fd_apply_unix_data(int fd, const struct wimlib_unix_data *unix_data)
+static int
+fd_apply_unix_data(int fd, const struct wimlib_unix_data *unix_data)
{
if (fchown(fd, unix_data->uid, unix_data->gid)) {
if (errno == EPERM) {
return 0;
}
-static int dir_apply_unix_data(const char *dir,
- const struct wimlib_unix_data *unix_data)
+static int
+dir_apply_unix_data(const mbchar *dir, const struct wimlib_unix_data *unix_data)
{
int dfd = open(dir, O_RDONLY);
int ret;
return ret;
}
-static int extract_regular_file_unlinked(struct wim_dentry *dentry,
- struct apply_args *args,
- const char *output_path,
- struct wim_lookup_table_entry *lte)
+static int
+extract_regular_file_unlinked(struct wim_dentry *dentry,
+ struct apply_args *args,
+ const mbchar *output_path,
+ struct wim_lookup_table_entry *lte)
{
/* Normal mode of extraction. Regular files and hard links are
* extracted in the way that they appear in the WIM. */
return ret;
}
-static int extract_regular_file(struct wim_dentry *dentry,
- struct apply_args *args,
- const char *output_path)
+static int
+extract_regular_file(struct wim_dentry *dentry,
+ struct apply_args *args,
+ const mbchar *output_path)
{
struct wim_lookup_table_entry *lte;
const struct wim_inode *inode = dentry->d_inode;
return extract_regular_file_unlinked(dentry, args, output_path, lte);
}
-static int extract_symlink(struct wim_dentry *dentry,
- struct apply_args *args,
- const char *output_path)
+static int
+extract_symlink(struct wim_dentry *dentry,
+ struct apply_args *args,
+ const mbchar *output_path)
{
- char target[4096];
+ mbchar target[4096];
ssize_t ret = inode_readlink(dentry->d_inode, target,
sizeof(target), args->w, 0);
struct wim_lookup_table_entry *lte;
if (ret <= 0) {
ERROR("Could not read the symbolic link from dentry `%s'",
- dentry->full_path_utf8);
+ dentry->full_path);
return WIMLIB_ERR_INVALID_DENTRY;
}
ret = symlink(target, output_path);
return 0;
}
-static int extract_directory(struct wim_dentry *dentry,
- const char *output_path, bool is_root)
+#endif /* !__WIN32__ */
+
+static int
+extract_directory(struct wim_dentry *dentry,
+ const mbchar *output_path, bool is_root)
{
int ret;
struct stat stbuf;
return WIMLIB_ERR_STAT;
}
}
- if (mkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP |
- S_IROTH | S_IXOTH) != 0) {
- ERROR_WITH_ERRNO("Cannot create directory `%s'",
- output_path);
+
+ if (mkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH))
+ {
+ ERROR_WITH_ERRNO("Cannot create directory `%s'", output_path);
return WIMLIB_ERR_MKDIR;
}
dir_exists:
+ ret = 0;
+#ifndef __WIN32__
if (dentry) {
struct wimlib_unix_data unix_data;
ret = inode_get_unix_data(dentry->d_inode, &unix_data, NULL);
ret = 0;
else
ret = dir_apply_unix_data(output_path, &unix_data);
- } else {
- ret = 0;
}
+#endif
return ret;
}
-/* Extracts a file, directory, or symbolic link from the WIM archive. */
-static int apply_dentry_normal(struct wim_dentry *dentry, void *arg)
+#ifndef __WIN32__
+static int unix_do_apply_dentry(const mbchar *output_path,
+ size_t output_path_len,
+ struct wim_dentry *dentry,
+ struct apply_args *args)
{
- struct apply_args *args = arg;
- struct wim_inode *inode = dentry->d_inode;
- size_t len;
-
- 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';
+ const struct wim_inode *inode = dentry->d_inode;
if (inode_is_symlink(inode))
return extract_symlink(dentry, args, output_path);
return extract_regular_file(dentry, args, output_path);
}
-/* Apply timestamps to an extracted file or directory */
-static int apply_dentry_timestamps_normal(struct wim_dentry *dentry, void *arg)
+static int
+unix_do_apply_dentry_timestamps(const mbchar *output_path,
+ size_t output_path_len,
+ const struct wim_dentry *dentry,
+ struct apply_args *args)
{
- struct apply_args *args = arg;
- size_t len = strlen(args->target);
- char output_path[len + dentry->full_path_utf8_len + 1];
- const struct wim_inode *inode = dentry->d_inode;
int ret;
+ const struct wim_inode *inode = dentry->d_inode;
- 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';
-
+#ifdef HAVE_UTIMENSAT
/* Convert the WIM timestamps, which are accurate to 100 nanoseconds,
- * into struct timeval's. */
- struct timeval tv[2];
- wim_timestamp_to_timeval(inode->i_last_access_time, &tv[0]);
- wim_timestamp_to_timeval(inode->i_last_write_time, &tv[1]);
+ * into `struct timespec's for passing to utimensat(), which is accurate
+ * to 1 nanosecond. */
+
+ struct timespec ts[2];
+ ts[0] = wim_timestamp_to_timespec(inode->i_last_access_time);
+ ts[1] = wim_timestamp_to_timespec(inode->i_last_write_time);
+ ret = utimensat(AT_FDCWD, output_path, ts, AT_SYMLINK_NOFOLLOW);
+ if (ret)
+ ret = errno;
+#else
+ ret = ENOSYS;
+#endif
+
+ if (ret == ENOSYS) {
+ /* utimensat() not implemented or not available */
#ifdef HAVE_LUTIMES
- ret = lutimes(output_path, tv);
- #else
- ret = -1;
- errno = ENOSYS;
+ /* Convert the WIM timestamps, which are accurate to 100
+ * nanoseconds, into `struct timeval's for passing to lutimes(),
+ * which is accurate to 1 microsecond. */
+ struct timeval tv[2];
+ tv[0] = wim_timestamp_to_timeval(inode->i_last_access_time);
+ tv[1] = wim_timestamp_to_timeval(inode->i_last_write_time);
+ ret = lutimes(output_path, tv);
+ if (ret)
+ ret = errno;
#endif
- if (ret != 0) {
- #ifdef HAVE_UTIME
- if (errno == ENOSYS) {
- struct utimbuf buf;
- buf.actime = wim_timestamp_to_unix(inode->i_last_access_time);
- buf.modtime = wim_timestamp_to_unix(inode->i_last_write_time);
- if (utime(output_path, &buf) == 0)
- return 0;
- }
- #endif
- if (errno != ENOSYS || args->num_lutimes_warnings < 10) {
- /*WARNING_WITH_ERRNO("Failed to set timestamp on file `%s',*/
- /*output_path");*/
- args->num_lutimes_warnings++;
- }
+ }
+
+ if (ret == ENOSYS) {
+ /* utimensat() and lutimes() both not implemented or not
+ * available */
+ #ifdef HAVE_UTIME
+ /* Convert the WIM timestamps, which are accurate to 100
+ * nanoseconds, into a `struct utimbuf's for passing to
+ * utime(), which is accurate to 1 second. */
+ struct utimbuf buf;
+ buf.actime = wim_timestamp_to_unix(inode->i_last_access_time);
+ buf.modtime = wim_timestamp_to_unix(inode->i_last_write_time);
+ ret = utime(output_path, &buf);
+ #endif
+ }
+ if (ret && args->num_utime_warnings < 10) {
+ WARNING_WITH_ERRNO("Failed to set timestamp on file `%s'",
+ output_path);
+ args->num_utime_warnings++;
}
return 0;
}
+#endif /* !__WIN32__ */
+
+/* Extracts a file, directory, or symbolic link from the WIM archive. */
+static int
+apply_dentry_normal(struct wim_dentry *dentry, void *arg)
+{
+ struct apply_args *args = arg;
+ size_t len;
+ mbchar *output_path;
+
+ len = strlen(args->target);
+ if (dentry_is_root(dentry)) {
+ output_path = (mbchar*)args->target;
+ } else {
+ output_path = alloca(len + dentry->full_path_nbytes + 1);
+ memcpy(output_path, args->target, len);
+ memcpy(output_path + len, dentry->full_path, dentry->full_path_nbytes);
+ output_path[len + dentry->full_path_nbytes] = '\0';
+ len += dentry->full_path_nbytes;
+ }
+#ifdef __WIN32__
+ return win32_do_apply_dentry(output_path, len, dentry, args);
+#else
+ return unix_do_apply_dentry(output_path, len, dentry, args);
+#endif
+}
+
+
+/* Apply timestamps to an extracted file or directory */
+static int
+apply_dentry_timestamps_normal(struct wim_dentry *dentry, void *arg)
+{
+ struct apply_args *args = arg;
+ size_t len;
+ mbchar *output_path;
+
+ len = strlen(args->target);
+ if (dentry_is_root(dentry)) {
+ output_path = (mbchar*)args->target;
+ } else {
+ output_path = alloca(len + dentry->full_path_nbytes + 1);
+ memcpy(output_path, args->target, len);
+ memcpy(output_path + len, dentry->full_path, dentry->full_path_nbytes);
+ output_path[len + dentry->full_path_nbytes] = '\0';
+ len += dentry->full_path_nbytes;
+ }
+
+#ifdef __WIN32__
+ return win32_do_apply_dentry_timestamps(output_path, len, dentry, args);
+#else
+ return unix_do_apply_dentry_timestamps(output_path, len, dentry, args);
+#endif
+}
/* Extract a dentry if it hasn't already been extracted, and either the dentry
* has no streams or WIMLIB_EXTRACT_FLAG_NO_STREAMS is not specified. */
-static int maybe_apply_dentry(struct wim_dentry *dentry, void *arg)
+static int
+maybe_apply_dentry(struct wim_dentry *dentry, void *arg)
{
struct apply_args *args = arg;
int ret;
if ((args->extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE) &&
args->progress_func) {
- args->progress.extract.cur_path = dentry->full_path_utf8;
+ args->progress.extract.cur_path = dentry->full_path;
args->progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DENTRY,
&args->progress);
}
return ret;
}
-static int cmp_streams_by_wim_position(const void *p1, const void *p2)
+static int
+cmp_streams_by_wim_position(const void *p1, const void *p2)
{
const struct wim_lookup_table_entry *lte1, *lte2;
lte1 = *(const struct wim_lookup_table_entry**)p1;
return 0;
}
-static int sort_stream_list_by_wim_position(struct list_head *stream_list)
+static int
+sort_stream_list_by_wim_position(struct list_head *stream_list)
{
struct list_head *cur;
size_t num_streams;
return 0;
}
-static void calculate_bytes_to_extract(struct list_head *stream_list,
- int extract_flags,
- union wimlib_progress_info *progress)
+static void
+calculate_bytes_to_extract(struct list_head *stream_list,
+ int extract_flags,
+ union wimlib_progress_info *progress)
{
struct wim_lookup_table_entry *lte;
u64 total_bytes = 0;
progress->extract.completed_bytes = 0;
}
-static void maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte,
- struct list_head *stream_list)
+static void
+maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte,
+ struct list_head *stream_list)
{
if (++lte->out_refcnt == 1) {
INIT_LIST_HEAD(<e->inode_list);
}
}
-static void inode_find_streams_for_extraction(struct wim_inode *inode,
- struct list_head *stream_list,
- int extract_flags)
+static void
+inode_find_streams_for_extraction(struct wim_inode *inode,
+ struct list_head *stream_list,
+ int extract_flags)
{
struct wim_lookup_table_entry *lte;
bool inode_added = false;
#ifdef WITH_NTFS_3G
if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
for (unsigned i = 0; i < inode->i_num_ads; i++) {
- if (inode->i_ads_entries[i].stream_name_len != 0) {
+ if (inode->i_ads_entries[i].stream_name_nbytes != 0) {
lte = inode->i_ads_entries[i].lte;
if (lte) {
maybe_add_stream_for_extraction(lte,
#endif
}
-static void find_streams_for_extraction(struct hlist_head *inode_list,
- struct list_head *stream_list,
- struct wim_lookup_table *lookup_table,
- int extract_flags)
+static void
+find_streams_for_extraction(struct hlist_head *inode_list,
+ struct list_head *stream_list,
+ struct wim_lookup_table *lookup_table,
+ int extract_flags)
{
struct wim_inode *inode;
struct hlist_node *cur;
};
#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)
+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;
/* Extracts the image @image from the WIM @w to the directory or NTFS volume
* @target. */
-static int extract_single_image(WIMStruct *w, int image,
- const char *target, int extract_flags,
- wimlib_progress_func_t progress_func)
+static int
+extract_single_image(WIMStruct *w, int image,
+ const mbchar *target, int extract_flags,
+ wimlib_progress_func_t progress_func)
{
int ret;
struct list_head stream_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.stream_list = &stream_list;
- args.progress_func = progress_func;
+ args.w = w;
+ args.target = target;
+ args.extract_flags = extract_flags;
+ args.num_utime_warnings = 0;
+ args.stream_list = &stream_list;
+ args.progress_func = progress_func;
if (progress_func) {
args.progress.extract.wimfile_name = w->filename;
/* Extracts all images from the WIM to the directory @target, with the images
* placed in subdirectories named by their image names. */
-static int extract_all_images(WIMStruct *w, const char *target,
- int extract_flags,
- wimlib_progress_func_t progress_func)
+static int
+extract_all_images(WIMStruct *w, const mbchar *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(target);
- char buf[output_path_len + 1 + image_name_max_len + 1];
+ mbchar buf[output_path_len + 1 + image_name_max_len + 1];
int ret;
int image;
- const char *image_name;
+ const utf8char *image_name;
ret = extract_directory(NULL, target, true);
if (ret != 0)
buf[output_path_len] = '/';
for (image = 1; image <= w->hdr.image_count; image++) {
image_name = wimlib_get_image_name(w, image);
- if (image_name && *image_name) {
+ if (image_name && *image_name &&
+ (wimlib_mbs_is_utf8 || !utf8_str_contains_nonascii_chars(image_name))
+ && strchr(image_name, '/') == NULL)
+ {
strcpy(buf + output_path_len + 1, image_name);
} else {
- /* Image name is empty. Use image number instead */
+ /* Image name is empty, or may not be representable in
+ * the current locale, or contains path separators. Use
+ * the image number instead. */
sprintf(buf + output_path_len + 1, "%d", image);
}
ret = extract_single_image(w, image, buf, extract_flags,
== (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
return WIMLIB_ERR_INVALID_PARAM;
+#ifdef __WIN32__
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
+ ERROR("Extracting UNIX data is not supported on Windows");
+ return WIMLIB_ERR_INVALID_PARAM;
+ }
+ if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
+ ERROR("Linked extraction modes are not supported on Windows");
+ return WIMLIB_ERR_INVALID_PARAM;
+ }
+#endif
+
if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
#ifdef WITH_NTFS_3G
if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))) {
git://wimlib.net / wimlib / blobdiff