* 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 Eric 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>
+#if defined(__CYGWIN__) || defined(__WIN32__)
+# include <windows.h>
+# ifdef ERROR
+# undef ERROR
+# endif
+# include <wchar.h>
+#else
+# include <dirent.h>
+# 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"
#include <ntfs-3g/volume.h>
#endif
-static int extract_regular_file_linked(struct dentry *dentry,
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+
+#if defined(__WIN32__)
+# define swprintf _snwprintf
+# define mkdir(path, mode) (!CreateDirectoryA(path, NULL))
+#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)
+{
+ int ret;
+ u8 *buf;
+ size_t len;
+
+ if (!lte) {
+ WARNING("\"%ls\" is marked as a reparse point but had no reparse data",
+ path);
+ return 0;
+ }
+ len = wim_resource_size(lte);
+ if (len > 16 * 1024 - 8) {
+ WARNING("\"%ls\": reparse data too long!", path);
+ return 0;
+ }
+
+ /* The WIM stream omits the ReparseTag and ReparseDataLength fields, so
+ * leave 8 bytes of space for them at the beginning of the buffer, then
+ * set them manually. */
+ 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;
+ *(u16*)(buf + 6) = 0;
+
+ /* Set the reparse data on the open file using the
+ * FSCTL_SET_REPARSE_POINT ioctl.
+ *
+ * There are contradictions in Microsoft's documentation for this:
+ *
+ * "If hDevice was opened without specifying FILE_FLAG_OVERLAPPED,
+ * lpOverlapped is ignored."
+ *
+ * --- So setting lpOverlapped to NULL is okay since it's ignored.
+ *
+ * "If lpOverlapped is NULL, lpBytesReturned cannot be NULL. Even when an
+ * operation returns no output data and lpOutBuffer is NULL,
+ * DeviceIoControl makes use of lpBytesReturned. After such an
+ * operation, the value of lpBytesReturned is meaningless."
+ *
+ * --- So lpOverlapped not really ignored, as it affects another
+ * parameter. This is the actual behavior: lpBytesReturned must be
+ * specified, even though lpBytesReturned is documented as:
+ *
+ * "Not used with this operation; set to NULL."
+ */
+ DWORD bytesReturned;
+ if (!DeviceIoControl(h, FSCTL_SET_REPARSE_POINT, buf, len + 8,
+ NULL, 0,
+ &bytesReturned /* lpBytesReturned */,
+ NULL /* lpOverlapped */))
+ {
+ DWORD err = GetLastError();
+ ERROR("Failed to set reparse data on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
+
+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)
+{
+ wchar_t *stream_path;
+ HANDLE h;
+ int ret;
+ DWORD err;
+ DWORD creationDisposition = CREATE_ALWAYS;
+
+ if (stream_name_utf16) {
+ /* Named stream. Create a buffer that contains the UTF-16LE
+ * string [./]@path:@stream_name_utf16. This is needed to
+ * create and open the stream using CreateFileW(). I'm not
+ * aware of any other APIs to do this. Note: the '$DATA' suffix
+ * seems to be unneeded. Additional note: a "./" prefix needs
+ * to be added when the path is not absolute to avoid ambiguity
+ * with drive letters. */
+ size_t stream_path_nchars;
+ size_t path_nchars;
+ size_t stream_name_nchars;
+ const wchar_t *prefix;
+
+ path_nchars = wcslen(path);
+ stream_name_nchars = wcslen(stream_name_utf16);
+ stream_path_nchars = path_nchars + 1 + stream_name_nchars;
+ if (path[0] != L'/' && path[0] != L'\\') {
+ prefix = L"./";
+ stream_path_nchars += 2;
+ } else {
+ prefix = L"";
+ }
+ stream_path = alloca((stream_path_nchars + 1) * sizeof(wchar_t));
+ swprintf(stream_path, stream_path_nchars + 1, L"%ls%ls:%ls",
+ prefix, path, stream_name_utf16);
+ } else {
+ /* Unnamed stream; its path is just the path to the file itself.
+ * */
+ stream_path = (wchar_t*)path;
+
+ /* Directories must be created with CreateDirectoryW(). Then
+ * the call to CreateFileW() will merely open the directory that
+ * was already created rather than creating a new file. */
+ if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
+ if (!CreateDirectoryW(stream_path, NULL)) {
+ err = GetLastError();
+ if (err != ERROR_ALREADY_EXISTS) {
+ ERROR("Failed to create directory \"%ls\"",
+ stream_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_MKDIR;
+ goto fail;
+ }
+ }
+ DEBUG("Created directory \"%ls\"", stream_path);
+ if (!(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
+ ret = 0;
+ goto out;
+ }
+ creationDisposition = OPEN_EXISTING;
+ }
+ }
+
+ DEBUG("Opening \"%ls\"", stream_path);
+ h = CreateFileW(stream_path,
+ GENERIC_WRITE | WRITE_OWNER | WRITE_DAC | ACCESS_SYSTEM_SECURITY,
+ 0,
+ NULL,
+ creationDisposition,
+ FILE_FLAG_OPEN_REPARSE_POINT |
+ FILE_FLAG_BACKUP_SEMANTICS |
+ inode->i_attributes,
+ NULL);
+ if (h == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ ERROR("Failed to create \"%ls\"", stream_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_OPEN;
+ goto fail;
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+ stream_name_utf16 == NULL)
+ {
+ DEBUG("Setting reparse data on \"%ls\"", path);
+ ret = win32_set_reparse_data(h, inode->i_reparse_tag, lte, path);
+ if (ret)
+ goto fail_close_handle;
+ } else {
+ if (lte) {
+ DEBUG("Extracting \"%ls\" (len = %"PRIu64")",
+ stream_path, wim_resource_size(lte));
+ ret = do_win32_extract_stream(h, lte);
+ if (ret)
+ goto fail_close_handle;
+ }
+ }
+
+ DEBUG("Closing \"%ls\"", stream_path);
+ if (!CloseHandle(h)) {
+ err = GetLastError();
+ ERROR("Failed to close \"%ls\"", stream_path);
+ win32_error(err);
+ ret = WIMLIB_ERR_WRITE;
+ goto fail;
+ }
+ ret = 0;
+ goto out;
+fail_close_handle:
+ CloseHandle(h);
+fail:
+ ERROR("Error extracting %ls", stream_path);
+out:
+ return ret;
+}
+
+/*
+ * Creates a file, directory, or reparse point and extracts all streams to it
+ * (unnamed data stream and/or reparse point stream, plus any alternate data
+ * streams). This in Win32-specific code.
+ *
+ * @inode: WIM inode for this file or directory.
+ * @path: UTF-16LE external path to extract the inode to.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int win32_extract_streams(struct wim_inode *inode,
+ const wchar_t *path, u64 *completed_bytes_p)
+{
+ struct wim_lookup_table_entry *unnamed_lte;
+ int ret;
+
+ unnamed_lte = inode_unnamed_lte_resolved(inode);
+ ret = win32_extract_stream(inode, path, NULL, unnamed_lte);
+ if (ret)
+ goto out;
+ if (unnamed_lte)
+ *completed_bytes_p += wim_resource_size(unnamed_lte);
+ 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) {
+ /* Skip special UNIX data entries (see documentation for
+ * WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) */
+ if (ads_entry->stream_name_len == WIMLIB_UNIX_DATA_TAG_LEN
+ && !memcmp(ads_entry->stream_name_utf8,
+ WIMLIB_UNIX_DATA_TAG,
+ WIMLIB_UNIX_DATA_TAG_LEN))
+ continue;
+ ret = win32_extract_stream(inode,
+ path,
+ (const wchar_t*)ads_entry->stream_name,
+ ads_entry->lte);
+ if (ret)
+ break;
+ if (ads_entry->lte)
+ *completed_bytes_p += wim_resource_size(ads_entry->lte);
+ }
+ }
+out:
+ return ret;
+}
+
+/*
+ * Sets the security descriptor on an extracted file. This is Win32-specific
+ * code.
+ *
+ * @inode: The WIM inode that was extracted and has a security descriptor.
+ * @path: UTF-16LE external path that the inode was extracted to.
+ * @sd: Security data for the WIM image.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int win32_set_security_data(const struct wim_inode *inode,
+ const wchar_t *path,
+ const struct wim_security_data *sd)
+{
+ 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 \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
+#else /* __CYGWIN__ || __WIN32__ */
+static int extract_regular_file_linked(struct wim_dentry *dentry,
const char *output_path,
struct apply_args *args,
- struct lookup_table_entry *lte)
+ struct wim_lookup_table_entry *lte)
{
/* This mode overrides the normal hard-link extraction and
* instead either symlinks or hardlinks *all* identical files in
return 0;
}
-static int extract_regular_file_unlinked(struct dentry *dentry,
+static int symlink_apply_unix_data(const char *link,
+ const struct wimlib_unix_data *unix_data)
+{
+ if (lchown(link, unix_data->uid, unix_data->gid)) {
+ if (errno == EPERM) {
+ /* Ignore */
+ WARNING_WITH_ERRNO("failed to set symlink UNIX owner/group");
+ } else {
+ ERROR_WITH_ERRNO("failed to set symlink UNIX owner/group");
+ return WIMLIB_ERR_INVALID_DENTRY;
+ }
+ }
+ return 0;
+}
+
+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) {
+ WARNING_WITH_ERRNO("failed to set file UNIX owner/group");
+ /* Ignore? */
+ } else {
+ ERROR_WITH_ERRNO("failed to set file UNIX owner/group");
+ return WIMLIB_ERR_INVALID_DENTRY;
+ }
+ }
+
+ if (fchmod(fd, unix_data->mode)) {
+ if (errno == EPERM) {
+ WARNING_WITH_ERRNO("failed to set UNIX file mode");
+ /* Ignore? */
+ } else {
+ ERROR_WITH_ERRNO("failed to set UNIX file mode");
+ return WIMLIB_ERR_INVALID_DENTRY;
+ }
+ }
+ return 0;
+}
+
+static int dir_apply_unix_data(const char *dir,
+ const struct wimlib_unix_data *unix_data)
+{
+ int dfd = open(dir, O_RDONLY);
+ int ret;
+ if (dfd >= 0) {
+ ret = fd_apply_unix_data(dfd, unix_data);
+ if (close(dfd)) {
+ ERROR_WITH_ERRNO("can't close directory `%s'", dir);
+ ret = WIMLIB_ERR_MKDIR;
+ }
+ } else {
+ ERROR_WITH_ERRNO("can't open directory `%s'", dir);
+ ret = WIMLIB_ERR_MKDIR;
+ }
+ return ret;
+}
+
+static int extract_regular_file_unlinked(struct wim_dentry *dentry,
struct apply_args *args,
const char *output_path,
- struct lookup_table_entry *lte)
+ 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. */
int out_fd;
int ret;
- struct inode *inode = dentry->d_inode;
+ struct wim_inode *inode = dentry->d_inode;
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
+ /* If the dentry is part 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) {
+ * already-extracted directory. Otherwise, extract the file and
+ * set the inode->i_extracted_file field so that other dentries
+ * in the hard link group can link to it. */
+ if (inode->i_nlink > 1) {
+ if (inode->i_extracted_file) {
DEBUG("Extracting hard link `%s' => `%s'",
- output_path, inode->extracted_file);
- if (link(inode->extracted_file, output_path) != 0) {
+ output_path, inode->i_extracted_file);
+ if (link(inode->i_extracted_file, output_path) != 0) {
ERROR_WITH_ERRNO("Failed to hard link "
"`%s' to `%s'",
output_path,
- inode->extracted_file);
+ inode->i_extracted_file);
return WIMLIB_ERR_LINK;
}
return 0;
}
- FREE(inode->extracted_file);
- inode->extracted_file = STRDUP(output_path);
- if (!inode->extracted_file) {
+ FREE(inode->i_extracted_file);
+ inode->i_extracted_file = STRDUP(output_path);
+ if (!inode->i_extracted_file) {
ERROR("Failed to allocate memory for filename");
return WIMLIB_ERR_NOMEM;
}
/* Empty file with no lookup table entry */
DEBUG("Empty file `%s'.", output_path);
ret = 0;
- goto out;
+ goto out_extract_unix_data;
}
ret = extract_wim_resource_to_fd(lte, out_fd, wim_resource_size(lte));
ERROR("Failed to extract resource to `%s'", output_path);
goto out;
}
- args->progress.extract.completed_bytes += wim_resource_size(lte);
+
+out_extract_unix_data:
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
+ struct wimlib_unix_data unix_data;
+ ret = inode_get_unix_data(inode, &unix_data, NULL);
+ if (ret > 0)
+ ;
+ else if (ret < 0)
+ ret = 0;
+ else
+ ret = fd_apply_unix_data(out_fd, &unix_data);
+ if (ret != 0)
+ goto out;
+ }
+ if (lte)
+ 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;
+ if (ret == 0)
+ ret = WIMLIB_ERR_WRITE;
}
return ret;
}
-/*
- * Extracts a regular file from the WIM archive.
- */
-static int extract_regular_file(struct dentry *dentry,
+static int extract_regular_file(struct wim_dentry *dentry,
struct apply_args *args,
const char *output_path)
{
- struct lookup_table_entry *lte;
- const struct inode *inode = dentry->d_inode;
+ struct wim_lookup_table_entry *lte;
+ const struct wim_inode *inode = dentry->d_inode;
lte = inode_unnamed_lte_resolved(inode);
return extract_regular_file_unlinked(dentry, args, output_path, lte);
}
-static int extract_symlink(struct dentry *dentry,
+static int extract_symlink(struct wim_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;
+ struct wim_lookup_table_entry *lte;
if (ret <= 0) {
ERROR("Could not read the symbolic link from dentry `%s'",
return WIMLIB_ERR_LINK;
}
lte = inode_unnamed_lte_resolved(dentry->d_inode);
+ wimlib_assert(lte != NULL);
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
+ struct wimlib_unix_data unix_data;
+ ret = inode_get_unix_data(dentry->d_inode, &unix_data, NULL);
+ if (ret > 0)
+ ;
+ else if (ret < 0)
+ ret = 0;
+ else
+ ret = symlink_apply_unix_data(output_path, &unix_data);
+ if (ret != 0)
+ return ret;
+ }
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.
- */
-static int extract_directory(const char *output_path, bool is_root)
+#endif /* !(__CYGWIN__ || __WIN32__) */
+
+static int extract_directory(struct wim_dentry *dentry,
+ const char *output_path, bool is_root)
{
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;
+ goto dir_exists;
} else {
ERROR("`%s' is not a directory", output_path);
return WIMLIB_ERR_MKDIR;
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;
+dir_exists:
+ ret = 0;
+#if !defined(__CYGWIN__) && !defined(__WIN32__)
+ if (dentry) {
+ struct wimlib_unix_data unix_data;
+ ret = inode_get_unix_data(dentry->d_inode, &unix_data, NULL);
+ if (ret > 0)
+ ;
+ else if (ret < 0)
+ ret = 0;
+ else
+ ret = dir_apply_unix_data(output_path, &unix_data);
+ }
+#endif
+ return ret;
}
-/*
- * Extracts a file, directory, or symbolic link from the WIM archive. For use
- * in for_dentry_in_tree().
- */
-static int apply_dentry_normal(struct dentry *dentry, void *arg)
+/* 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;
- int extract_flags = args->extract_flags;
- struct inode *inode = dentry->d_inode;
+ struct wim_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;
+ char *output_path;
- 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);
+ 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;
}
- 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, &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. Create a
+ * hard link. */
+ DEBUG("Creating hard link \"%ls => %ls\"",
+ (const wchar_t*)utf16_path,
+ (const wchar_t*)inode->i_extracted_file);
+ if (!CreateHardLinkW((const wchar_t*)utf16_path,
+ (const wchar_t*)inode->i_extracted_file,
+ NULL))
+ {
+ err = GetLastError();
+ ERROR("Can't create hard link \"%ls => %ls\"",
+ (const wchar_t*)utf16_path,
+ (const wchar_t*)inode->i_extracted_file);
+ ret = WIMLIB_ERR_LINK;
+ win32_error(err);
+ }
+ } else {
+ /* Create the file, directory, or reparse point, and extract the
+ * data streams. */
+ ret = win32_extract_streams(inode, (const wchar_t*)utf16_path,
+ &args->progress.extract.completed_bytes);
+ if (ret)
+ goto out_free_utf16_path;
+
+ /* Set security descriptor if present */
+ if (inode->i_security_id != -1) {
+ DEBUG("Setting security descriptor %d on %s",
+ inode->i_security_id, output_path);
+ ret = win32_set_security_data(inode,
+ (const wchar_t*)utf16_path,
+ wim_const_security_data(args->w));
+ if (ret)
+ goto out_free_utf16_path;
+ }
+ if (inode->i_nlink > 1) {
+ /* Save extracted path for a later call to
+ * CreateHardLinkW() if this inode has multiple links.
+ * */
+ inode->i_extracted_file = utf16_path;
+ goto out;
+ }
+ }
+out_free_utf16_path:
+ FREE(utf16_path);
+out:
+ return ret;
+#else
if (inode_is_symlink(inode))
- ret = extract_symlink(dentry, args, output_path);
+ return extract_symlink(dentry, args, output_path);
else if (inode_is_directory(inode))
- ret = extract_directory(output_path, false);
+ return extract_directory((args->extract_flags &
+ WIMLIB_EXTRACT_FLAG_UNIX_DATA) ? dentry : NULL,
+ output_path, false);
else
- ret = extract_regular_file(dentry, args, output_path);
- if (ret == 0)
- dentry->is_extracted = 1;
- return ret;
+ return extract_regular_file(dentry, args, output_path);
+#endif
}
-/* Apply timestamp to extracted file */
-static int apply_dentry_timestamps_normal(struct dentry *dentry, void *arg)
+/* 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 = strlen(args->target);
- char output_path[len + dentry->full_path_utf8_len + 1];
- const struct inode *inode = dentry->d_inode;
+ size_t len;
+ char *output_path;
int ret;
+ const struct wim_inode *inode = dentry->d_inode;
+
+ 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;
+ }
- 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;
+ ret = utf8_to_utf16(output_path, len, &utf16_path, &utf16_path_len);
+ if (ret)
+ return ret;
+
+ DEBUG("Opening \"%s\" to set timestamps", output_path);
+ h = CreateFileW((const wchar_t*)utf16_path,
+ GENERIC_WRITE | WRITE_OWNER | WRITE_DAC | ACCESS_SYSTEM_SECURITY,
+ FILE_SHARE_READ,
+ NULL,
+ OPEN_EXISTING,
+ FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
+ NULL);
+
+ if (h == INVALID_HANDLE_VALUE)
+ err = GetLastError();
+ FREE(utf16_path);
+ if (h == INVALID_HANDLE_VALUE)
+ goto fail;
+
+ FILETIME creationTime = {.dwLowDateTime = inode->i_creation_time & 0xffffffff,
+ .dwHighDateTime = inode->i_creation_time >> 32};
+ FILETIME lastAccessTime = {.dwLowDateTime = inode->i_last_access_time & 0xffffffff,
+ .dwHighDateTime = inode->i_last_access_time >> 32};
+ FILETIME lastWriteTime = {.dwLowDateTime = inode->i_last_write_time & 0xffffffff,
+ .dwHighDateTime = inode->i_last_write_time >> 32};
+
+ DEBUG("Calling SetFileTime() on \"%s\"", output_path);
+ if (!SetFileTime(h, &creationTime, &lastAccessTime, &lastWriteTime)) {
+ err = GetLastError();
+ CloseHandle(h);
+ goto fail;
+ }
+ DEBUG("Closing \"%s\"", output_path);
+ if (!CloseHandle(h)) {
+ err = GetLastError();
+ goto fail;
+ }
+ goto out;
+fail:
+ /* Only warn if setting timestamps failed. */
+ WARNING("Can't set timestamps on \"%s\"", output_path);
+ win32_error(err);
+out:
+ return 0;
+#else
+ /* UNIX */
+
+ /* Convert the WIM timestamps, which are accurate to 100 nanoseconds,
+ * into struct timeval's. */
struct timeval tv[2];
- wim_timestamp_to_timeval(inode->last_access_time, &tv[0]);
- wim_timestamp_to_timeval(inode->last_write_time, &tv[1]);
+ wim_timestamp_to_timeval(inode->i_last_access_time, &tv[0]);
+ wim_timestamp_to_timeval(inode->i_last_write_time, &tv[1]);
#ifdef HAVE_LUTIMES
ret = lutimes(output_path, tv);
#else
#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);
+ 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("Failed to set timestamp on file `%s': %s",*/
- /*output_path, strerror(errno));*/
+ /*WARNING_WITH_ERRNO("Failed to set timestamp on file `%s',*/
+ /*output_path");*/
args->num_lutimes_warnings++;
}
}
return 0;
+#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)
+{
+ struct apply_args *args = arg;
+ int ret;
+
+ if (dentry->is_extracted)
+ return 0;
+
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_STREAMS)
+ if (inode_unnamed_lte_resolved(dentry->d_inode))
+ return 0;
+
+ if ((args->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);
+ }
+ ret = args->apply_dentry(dentry, args);
+ if (ret == 0)
+ dentry->is_extracted = 1;
+ return ret;
}
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;
+ const struct wim_lookup_table_entry *lte1, *lte2;
+ lte1 = *(const struct wim_lookup_table_entry**)p1;
+ lte2 = *(const struct wim_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)
{
struct list_head *cur;
size_t num_streams;
- struct lookup_table_entry **array;
+ struct wim_lookup_table_entry **array;
size_t i;
size_t array_size;
}
cur = stream_list->next;
for (i = 0; i < num_streams; i++) {
- array[i] = container_of(cur, struct lookup_table_entry, staging_list);
+ array[i] = container_of(cur, struct wim_lookup_table_entry, staging_list);
cur = cur->next;
}
int extract_flags,
union wimlib_progress_info *progress)
{
- struct lookup_table_entry *lte;
+ struct wim_lookup_table_entry *lte;
u64 total_bytes = 0;
u64 num_streams = 0;
progress->extract.completed_bytes = 0;
}
-static void maybe_add_stream_for_extraction(struct lookup_table_entry *lte,
+static void maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte,
struct list_head *stream_list)
{
if (++lte->out_refcnt == 1) {
}
}
-static void inode_find_streams_for_extraction(struct inode *inode,
+static void inode_find_streams_for_extraction(struct wim_inode *inode,
struct list_head *stream_list,
int extract_flags)
{
- struct lookup_table_entry *lte;
+ struct wim_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);
+ list_add_tail(&inode->i_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->ads_entries[i].lte;
+ for (unsigned i = 0; i < inode->i_num_ads; i++) {
+ if (inode->i_ads_entries[i].stream_name_len != 0) {
+ lte = inode->i_ads_entries[i].lte;
if (lte) {
maybe_add_stream_for_extraction(lte,
stream_list);
if (!inode_added) {
- list_add_tail(&inode->lte_inode_list,
+ list_add_tail(&inode->i_lte_inode_list,
<e->inode_list);
inode_added = true;
}
static void find_streams_for_extraction(struct hlist_head *inode_list,
struct list_head *stream_list,
- struct lookup_table *lookup_table,
+ struct wim_lookup_table *lookup_table,
int extract_flags)
{
- struct inode *inode;
+ struct wim_inode *inode;
struct hlist_node *cur;
- struct dentry *dentry;
+ struct wim_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)
+ hlist_for_each_entry(inode, cur, inode_list, i_hlist) {
+ if (!inode->i_resolved)
inode_resolve_ltes(inode, lookup_table);
inode_for_each_dentry(dentry, inode)
dentry->is_extracted = 0;
}
struct apply_operations {
- int (*apply_dentry)(struct dentry *dentry, void *arg);
- int (*apply_dentry_timestamps)(struct dentry *dentry, void *arg);
+ int (*apply_dentry)(struct wim_dentry *dentry, void *arg);
+ int (*apply_dentry_timestamps)(struct wim_dentry *dentry, void *arg);
};
static const struct apply_operations normal_apply_operations = {
{
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;
+ struct wim_lookup_table_entry *lte;
+ struct wim_inode *inode;
+ struct wim_dentry *dentry;
+ int ret;
- /* This complicated loop is actually just looping through the dentries
- * (as for_dentry_in_tree() does), but the outer loop is actually over
- * the distinct streams to be extracted so that sequential reading of
- * the WIM can be implemented. */
+ /* This complicated loop is essentially looping through the dentries,
+ * although dentries may be visited more than once (if a dentry contains
+ * two different nonempty streams) or not at all (if a dentry contains
+ * no non-empty streams).
+ *
+ * The outer loop is over the distinct streams to be extracted so that
+ * sequential reading of the WIM can be implemented. */
/* For each distinct stream to be extracted */
list_for_each_entry(lte, stream_list, staging_list) {
/* For each inode that contains the stream */
- list_for_each_entry(inode, <e->inode_list, lte_inode_list) {
+ list_for_each_entry(inode, <e->inode_list, i_lte_inode_list) {
/* For each dentry that points to the inode */
inode_for_each_dentry(dentry, inode) {
- ret = ops->apply_dentry(dentry, args);
+ /* Extract the dentry if it was not already
+ * extracted */
+ ret = maybe_apply_dentry(dentry, args);
if (ret != 0)
- goto out;
+ return ret;
if (progress_func &&
- args->progress.extract.completed_bytes >= next_progress &&
- args->progress.extract.total_bytes != 0)
+ args->progress.extract.completed_bytes >= next_progress)
{
progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_STREAMS,
&args->progress);
- next_progress += bytes_per_progress;
+ if (args->progress.extract.completed_bytes >=
+ args->progress.extract.total_bytes)
+ {
+ next_progress = ~0ULL;
+ } else {
+ next_progress =
+ min (args->progress.extract.completed_bytes +
+ bytes_per_progress,
+ args->progress.extract.total_bytes);
+ }
}
}
}
}
-out:
- return ret;
+ return 0;
}
+/* 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)
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;
inode_list = &w->image_metadata[image - 1].inode_list;
+ /* Build a list of the streams that need to be extracted */
find_streams_for_extraction(inode_list, &stream_list,
w->lookup_table, extract_flags);
+ /* Calculate the number of bytes of data that will be extracted */
calculate_bytes_to_extract(&stream_list, extract_flags,
&args.progress);
&args.progress);
}
+ /* If a sequential extraction was specified, sort the streams to be
+ * extracted by their position in the WIM file, so that the WIM file can
+ * be read sequentially. */
if (extract_flags & WIMLIB_EXTRACT_FLAG_SEQUENTIAL) {
ret = sort_stream_list_by_wim_position(&stream_list);
if (ret != 0) {
&args.progress);
}
+ /* Make the directory structure and extract empty files */
args.extract_flags |= WIMLIB_EXTRACT_FLAG_NO_STREAMS;
- ret = for_dentry_in_tree(wim_root_dentry(w), ops->apply_dentry, &args);
+ args.apply_dentry = ops->apply_dentry;
+ ret = for_dentry_in_tree(wim_root_dentry(w), maybe_apply_dentry, &args);
args.extract_flags &= ~WIMLIB_EXTRACT_FLAG_NO_STREAMS;
if (ret != 0)
goto out;
&args.progress);
}
+ /* Extract non-empty files */
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);
+ if (progress_func) {
+ progress_func(WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
+ &args.progress);
+ }
+ /* Apply timestamps */
ret = for_dentry_in_tree_depth(wim_root_dentry(w),
ops->apply_dentry_timestamps, &args);
if (ret != 0)
}
out:
#ifdef WITH_NTFS_3G
+ /* Unmount the NTFS volume */
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);
}
-/* Extracts all images from the WIM to @output_dir, with the images placed in
- * subdirectories named by their image names. */
+/* 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)
int image;
const char *image_name;
- ret = extract_directory(target, true);
+ ret = extract_directory(NULL, target, true);
if (ret != 0)
return ret;
return 0;
}
-/* Extracts a single image or all images from a WIM file. */
-WIMLIBAPI int wimlib_extract_image(WIMStruct *w, int image,
+/* Extracts a single image or all images from a WIM file to a directory or NTFS
+ * volume. */
+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)
{
- struct lookup_table *joined_tab, *w_tab_save;
+ struct wim_lookup_table *joined_tab, *w_tab_save;
int ret;
if (!target)
== (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))
return WIMLIB_ERR_INVALID_PARAM;
+#if defined(__CYGWIN__) || defined(__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))) {
"directly to a NTFS volume");
return WIMLIB_ERR_INVALID_PARAM;
}
+ if (extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) {
+ ERROR("Cannot restore UNIX-specific data in the NTFS extraction mode");
+ 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");
w->lookup_table = joined_tab;
}
+#if defined(__CYGWIN__) || defined(__WIN32__)
+ win32_acquire_privilege(SE_RESTORE_NAME);
+ win32_acquire_privilege(SE_SECURITY_NAME);
+ win32_acquire_privilege(SE_TAKE_OWNERSHIP_NAME);
+#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);
}
+#if defined(__CYGWIN__) || defined(__WIN32__)
+ win32_release_privilege(SE_RESTORE_NAME);
+ win32_release_privilege(SE_SECURITY_NAME);
+ win32_release_privilege(SE_TAKE_OWNERSHIP_NAME);
+#endif
if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK |
WIMLIB_EXTRACT_FLAG_HARDLINK))
git://wimlib.net / wimlib / blobdiff