* 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.
*/
/*
#include "config.h"
-#if defined(__CYGWIN__) || defined(__WIN32__)
-#include <windows.h>
-# ifdef ERROR
-# undef ERROR
-# endif
-#include <wchar.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 <dirent.h>
#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
#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#else
-#include <stdlib.h>
+# include <alloca.h>
#endif
-#if defined(__CYGWIN__) || defined(__WIN32__)
-
-static int win32_set_reparse_data(HANDLE h,
- u32 reparse_tag,
- const struct wim_lookup_table_entry *lte,
- const wchar_t *path,
- const char *path_utf8)
-{
- int ret;
- u8 *buf;
- size_t len;
-
- if (!lte) {
- WARNING("\"%s\" is marked as a reparse point but had no reparse data",
- path_utf8);
- return 0;
- }
- len = wim_resource_size(lte);
- if (len > 16 * 1024 - 8) {
- WARNING("\"%s\": reparse data too long!", path_utf8);
- return 0;
- }
- buf = alloca(len + 8);
- ret = read_full_wim_resource(lte, buf + 8, 0);
- if (ret)
- return ret;
- *(u32*)(buf + 0) = reparse_tag;
- *(u16*)(buf + 4) = len;
- if (!DeviceIoControl(h, FSCTL_SET_REPARSE_POINT, buf, len + 8,
- NULL, 0, NULL, NULL))
- {
- DWORD err = GetLastError();
- ERROR("Failed to set reparse data on \"%s\"",
- path_utf8);
- win32_error(err);
- ret = WIMLIB_ERR_WRITE;
- } else
- ret = 0;
- return ret;
-}
-
-
-static int win32_extract_chunk(const u8 *buf, size_t len, u64 offset, void *arg)
-{
- HANDLE hStream = arg;
-
- DWORD nbytes_written;
- wimlib_assert(len <= 0xffffffff);
-
- if (!WriteFile(hStream, buf, len, &nbytes_written, NULL) ||
- nbytes_written != len)
- {
- DWORD err = GetLastError();
- ERROR("WriteFile(): write error");
- win32_error(err);
- return WIMLIB_ERR_WRITE;
- }
- return 0;
-}
-
-static int do_win32_extract_stream(HANDLE hStream, struct wim_lookup_table_entry *lte)
-{
- return extract_wim_resource(lte, wim_resource_size(lte),
- win32_extract_chunk, hStream);
-}
-
-static int win32_extract_stream(const struct wim_inode *inode,
- const wchar_t *path,
- const wchar_t *stream_name_utf16,
- struct wim_lookup_table_entry *lte,
- const char *path_utf8)
-{
- wchar_t *stream_path;
- HANDLE h;
- int ret;
-
- if (stream_name_utf16) {
- size_t stream_path_nchars;
- size_t path_nchars = wcslen(path);
- size_t stream_name_nchars = wcslen(stream_name_utf16);
-
- stream_path_nchars = path_nchars + 1 + stream_name_nchars;
-
- stream_path = alloca((stream_path_nchars + 1) * sizeof(wchar_t));
-
- memcpy(stream_path, path, path_nchars * sizeof(wchar_t));
- stream_path[path_nchars] = L':';
- memcpy(&stream_path[path_nchars + 1], stream_name_utf16,
- stream_name_nchars * sizeof(wchar_t));
- stream_path[stream_path_nchars] = L'\0';
-
- /*wsprintf(stream_path, stream_path_nchars, L"%ls:%ls",*/
- /*path, stream_name_utf16);*/
- } else {
- stream_path = (wchar_t*)path;
- }
-
- h = CreateFileW(stream_path,
- GENERIC_WRITE | WRITE_OWNER | WRITE_DAC,
- 0,
- NULL,
- CREATE_ALWAYS,
- FILE_FLAG_OPEN_REPARSE_POINT |
- FILE_FLAG_BACKUP_SEMANTICS |
- inode->i_attributes,
- NULL);
- if (!h) {
- win32_error(GetLastError());
- ret = WIMLIB_ERR_OPEN;
- goto fail;
- }
-
- if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
- ret = win32_set_reparse_data(h, inode->i_reparse_tag,
- lte, path, path_utf8);
- if (ret)
- goto fail_close_handle;
- } else {
- if (lte) {
- ret = do_win32_extract_stream(h, lte);
- if (ret)
- goto fail_close_handle;
- }
- }
-
- if (!CloseHandle(h)) {
- win32_error(GetLastError());
- ret = WIMLIB_ERR_WRITE;
- goto fail;
- }
- ret = 0;
- goto out;
-fail_close_handle:
- CloseHandle(h);
-fail:
- ERROR("Error extracting %s", path_utf8);
-out:
- return ret;
-}
-
-static int win32_extract_streams(struct wim_inode *inode,
- const wchar_t *path,
- const char *path_utf8)
-{
- struct wim_lookup_table_entry *unnamed_lte;
- int ret;
-
- ret = win32_extract_stream(inode, path, NULL, unnamed_lte, path_utf8);
- if (ret)
- goto out;
-
- for (u16 i = 0; i < inode->i_num_ads; i++) {
- const struct wim_ads_entry *ads_entry = &inode->i_ads_entries[i];
- if (ads_entry->stream_name_len != 0) {
- ret = win32_extract_stream(inode,
- path,
- (const wchar_t*)ads_entry->stream_name,
- ads_entry->lte,
- path_utf8);
- if (ret)
- goto out;
- }
- }
- ret = 0;
-out:
- return ret;
-}
-
-static int win32_set_security_data(const struct wim_inode *inode,
- const wchar_t *path,
- const struct wim_security_data *sd,
- const char *path_utf8)
-{
- SECURITY_INFORMATION securityInformation = DACL_SECURITY_INFORMATION |
- SACL_SECURITY_INFORMATION |
- OWNER_SECURITY_INFORMATION |
- GROUP_SECURITY_INFORMATION;
- if (!SetFileSecurityW(path, securityInformation,
- (PSECURITY_DESCRIPTOR)sd->descriptors[inode->i_security_id]))
- {
- DWORD err = GetLastError();
- ERROR("Can't set security descriptor on \"%s\"", path_utf8);
- win32_error(err);
- return WIMLIB_ERR_WRITE;
- }
- return 0;
-}
-
-#else
+#ifndef __WIN32__
static int extract_regular_file_linked(struct wim_dentry *dentry,
const char *output_path,
struct apply_args *args,
return 0;
}
-#endif /* !__CYGWIN__ && !__WIN32__ */
+#endif /* !__WIN32__ */
static int extract_directory(struct wim_dentry *dentry,
const char *output_path, bool is_root)
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 char *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';
-
-#if defined(__CYGWIN__) || defined(__WIN32__)
- char *utf16_path;
- size_t utf16_path_len;
- DWORD err;
- int ret;
- ret = utf8_to_utf16(output_path, len + dentry->full_path_utf8_len,
- &utf16_path, &utf16_path_len);
- if (ret)
- return ret;
-
- if (inode->i_nlink > 1 && inode->i_extracted_file != NULL) {
- /* Linked file, with another name already extracted */
- if (!CreateHardLinkW((const wchar_t*)inode->i_extracted_file,
- (const wchar_t*)utf16_path,
- NULL))
- {
- err = GetLastError();
- ERROR("Can't create hard link \"%s\"", output_path);
- ret = WIMLIB_ERR_LINK;
- win32_error(err);
- goto out_free_utf16_path;
- }
- ret = 0;
- goto out_free_utf16_path;
- }
- ret = win32_extract_streams(inode, (const wchar_t*)utf16_path,
- output_path);
- if (ret)
- goto out_free_utf16_path;
-
- if (inode->i_security_id != -1) {
- ret = win32_set_security_data(inode,
- (const wchar_t*)utf16_path,
- wim_const_security_data(args->w),
- output_path);
- if (ret)
- goto out_free_utf16_path;
- }
-
- /*if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {*/
- /*ret = win32_set_reparse_data(inode, path, output_path);*/
- /*if (ret)*/
- /*goto out_free_utf16_path;*/
- /*}*/
+ const struct wim_inode *inode = dentry->d_inode;
- if (inode->i_nlink > 1) {
- inode->i_extracted_file = utf16_path;
- utf16_path = NULL;
- }
- ret = 0;
-out_free_utf16_path:
- FREE(utf16_path);
- return ret;
-#else
if (inode_is_symlink(inode))
return extract_symlink(dentry, args, output_path);
else if (inode_is_directory(inode))
output_path, false);
else
return extract_regular_file(dentry, args, output_path);
-#endif
}
-/* 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 char *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';
-
-#if defined(__CYGWIN__) || defined(__WIN32__)
- /* Win32 */
- char *utf16_path;
- size_t utf16_path_len;
- DWORD err;
- HANDLE h;
- BOOL bret1, bret2;
+#ifdef HAVE_UTIMENSAT
+ /* Convert the WIM timestamps, which are accurate to 100 nanoseconds,
+ * into `struct timespec's for passing to utimensat(), which is accurate
+ * to 1 nanosecond. */
- ret = utf8_to_utf16(output_path, len + dentry->full_path_utf8_len,
- &utf16_path, &utf16_path_len);
+ 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)
- return ret;
- h = CreateFile(utf16_path, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
- FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
- NULL);
-
- if (!h)
- err = GetLastError();
- FREE(utf16_path);
- if (!h)
- goto fail;
-
- FILETIME creationTime = {.dwLowDateTime = dentry->d_inode->i_creation_time & 0xffffffff,
- .dwHighDateTime = dentry->d_inode->i_creation_time >> 32};
- FILETIME lastAccessTime = {.dwLowDateTime = dentry->d_inode->i_last_access_time & 0xffffffff,
- .dwHighDateTime = dentry->d_inode->i_last_access_time >> 32};
- FILETIME lastWriteTime = {.dwLowDateTime = dentry->d_inode->i_last_write_time & 0xffffffff,
- .dwHighDateTime = dentry->d_inode->i_last_write_time >> 32};
-
- if (!SetFileTime(h, &creationTime, &lastAccessTime, &lastWriteTime)) {
- err = GetLastError();
- CloseHandle(h);
- goto fail;
- }
- if (!CloseHandle(h)) {
- err = GetLastError();
- goto fail;
- }
- return 0;
-fail:
- err = GetLastError();
- ERROR("Can't set timestamps on \"%s\"", output_path);
- win32_error(err);
- return WIMLIB_ERR_WRITE;
+ ret = errno;
#else
- /* UNIX */
+ ret = ENOSYS;
+#endif
- /* 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]);
+ 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 == 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 != 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 && 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;
+ char *output_path;
+
+ len = strlen(args->target);
+ if (dentry_is_root(dentry)) {
+ output_path = (char*)args->target;
+ } else {
+ output_path = alloca(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';
+ len += dentry->full_path_utf8_len;
+ }
+#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;
+ char *output_path;
+
+ len = strlen(args->target);
+ if (dentry_is_root(dentry)) {
+ output_path = (char*)args->target;
+ } else {
+ output_path = alloca(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';
+ len += dentry->full_path_utf8_len;
+ }
+#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
}
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;
== (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
return WIMLIB_ERR_INVALID_PARAM;
-#if defined(__CYGWIN__) || defined(__WIN32__)
+#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) {
w->lookup_table = joined_tab;
}
+#ifdef __WIN32__
+ win32_acquire_restore_privileges();
+#endif
if (image == WIMLIB_ALL_IMAGES) {
extract_flags |= WIMLIB_EXTRACT_FLAG_MULTI_IMAGE;
ret = extract_all_images(w, target, extract_flags,
ret = extract_single_image(w, image, target, extract_flags,
progress_func);
}
+#ifdef __WIN32__
+ win32_release_restore_privileges();
+#endif
if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
WIMLIB_EXTRACT_FLAG_HARDLINK))
git://wimlib.net / wimlib / blobdiff