return ret;
}
+/* Given a path, which may not yet exist, get a set of flags that describe the
+ * features of the volume the path is on. */
+static int
+win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret)
+{
+ wchar_t *volume;
+ BOOL bret;
+ DWORD vol_flags;
+
+ if (path[0] != L'\0' && path[0] != L'\\' &&
+ path[0] != L'/' && path[1] == L':')
+ {
+ /* Path starts with a drive letter; use it. */
+ volume = alloca(4 * sizeof(wchar_t));
+ volume[0] = path[0];
+ volume[1] = path[1];
+ volume[2] = L'\\';
+ volume[3] = L'\0';
+ } else {
+ /* Path does not start with a drive letter; use the volume of
+ * the current working directory. */
+ volume = NULL;
+ }
+ bret = GetVolumeInformationW(volume, /* lpRootPathName */
+ NULL, /* lpVolumeNameBuffer */
+ 0, /* nVolumeNameSize */
+ NULL, /* lpVolumeSerialNumber */
+ NULL, /* lpMaximumComponentLength */
+ &vol_flags, /* lpFileSystemFlags */
+ NULL, /* lpFileSystemNameBuffer */
+ 0); /* nFileSystemNameSize */
+ if (!bret) {
+ DWORD err = GetLastError();
+ WARNING("Failed to get volume information for path \"%ls\"", path);
+ win32_error(err);
+ vol_flags = 0xffffffff;
+ }
+
+ DEBUG("using vol_flags = %x", vol_flags);
+ *vol_flags_ret = vol_flags;
+ return 0;
+}
+
+
static u64
FILETIME_to_u64(const FILETIME *ft)
{
{
WIN32_FIND_DATAW dat;
if (FindFirstFileW(path, &dat) && dat.cAlternateFileName[0] != L'\0') {
+ DEBUG("\"%ls\": short name \"%ls\"", path, dat.cAlternateFileName);
size_t short_name_nbytes = wcslen(dat.cAlternateFileName) *
sizeof(wchar_t);
size_t n = short_name_nbytes + sizeof(wchar_t);
const struct wimlib_capture_config *config,
int add_image_flags,
wimlib_progress_func_t progress_func,
- struct win32_capture_state *state);
+ struct win32_capture_state *state,
+ unsigned vol_flags);
/* Reads the directory entries of directory using a Win32 API and recursively
* calls win32_build_dentry_tree() on them. */
const struct wimlib_capture_config *config,
int add_image_flags,
wimlib_progress_func_t progress_func,
- struct win32_capture_state *state)
+ struct win32_capture_state *state,
+ unsigned vol_flags)
{
WIN32_FIND_DATAW dat;
HANDLE hFind;
DWORD err;
int ret;
+ DEBUG("Recurse to directory \"%ls\"", dir_path);
+
/* Begin reading the directory by calling FindFirstFileW. Unlike UNIX
* opendir(), FindFirstFileW has file globbing built into it. But this
* isn't what we actually want, so just add a dummy glob to get all
config,
add_image_flags,
progress_func,
- state);
+ state,
+ vol_flags);
dir_path[dir_path_num_chars] = L'\0';
if (ret)
goto out_find_close;
struct wim_lookup_table *lookup_table,
const wchar_t *path)
{
+ DEBUG("Capturing reparse point \"%ls\"", path);
+
/* "Reparse point data, including the tag and optional GUID,
* cannot exceed 16 kilobytes." - MSDN */
char reparse_point_buf[16 * 1024];
const wchar_t *relpath_prefix;
const wchar_t *colonchar;
+ DEBUG("Capture \"%ls\" stream \"%ls\"", path, dat->cStreamName);
+
/* The stream name should be returned as :NAME:TYPE */
stream_name = dat->cStreamName;
if (*stream_name != L':')
stream_id = 0;
inode->i_lte = lte;
}
-
lookup_table_insert_unhashed(lookup_table, lte, inode, stream_id);
+ ret = 0;
out_free_spath:
FREE(spath);
out:
* @file_size: Size of unnamed data stream. (Used only if alternate
* data streams API appears to be unavailable.)
*
+ * @vol_flags: Flags that specify features of the volume being
+ * captured.
+ *
* Returns 0 on success; nonzero on failure.
*/
static int
size_t path_num_chars,
struct wim_inode *inode,
struct wim_lookup_table *lookup_table,
- u64 file_size)
+ u64 file_size,
+ unsigned vol_flags)
{
WIN32_FIND_STREAM_DATA dat;
int ret;
HANDLE hFind;
DWORD err;
- if (win32func_FindFirstStreamW == NULL)
+ DEBUG("Capturing streams from \"%ls\"", path);
+
+ if (win32func_FindFirstStreamW == NULL ||
+ !(vol_flags & FILE_NAMED_STREAMS))
goto unnamed_only;
hFind = win32func_FindFirstStreamW(path, FindStreamInfoStandard, &dat, 0);
if (hFind == INVALID_HANDLE_VALUE) {
err = GetLastError();
-
if (err == ERROR_CALL_NOT_IMPLEMENTED)
goto unnamed_only;
(FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
&& err == ERROR_HANDLE_EOF)
{
+ DEBUG("ERROR_HANDLE_EOF (ok)");
return 0;
} else {
if (err == ERROR_ACCESS_DENIED) {
- /* XXX This maybe should be an error. */
- WARNING("Failed to look up data streams "
- "of \"%ls\": Access denied!\n%ls",
- path, capture_access_denied_msg);
- return 0;
+ ERROR("Failed to look up data streams "
+ "of \"%ls\": Access denied!\n%ls",
+ path, capture_access_denied_msg);
+ return WIMLIB_ERR_READ;
} else {
ERROR("Failed to look up data streams "
"of \"%ls\"", path);
FindClose(hFind);
return ret;
unnamed_only:
- /* FindFirstStreamW() API is not available. Only capture the unnamed
- * data stream. */
+ /* FindFirstStreamW() API is not available, or the volume does not
+ * support named streams. Only capture the unnamed data stream. */
+ DEBUG("Only capturing unnamed data stream");
if (inode->i_attributes &
(FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
{
const struct wimlib_capture_config *config,
int add_image_flags,
wimlib_progress_func_t progress_func,
- struct win32_capture_state *state)
+ struct win32_capture_state *state,
+ unsigned vol_flags)
{
struct wim_dentry *root = NULL;
struct wim_inode *inode;
add_image_flags &= ~(WIMLIB_ADD_IMAGE_FLAG_ROOT | WIMLIB_ADD_IMAGE_FLAG_SOURCE);
- if (!(add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)) {
+ if (!(add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)
+ && (vol_flags & FILE_PERSISTENT_ACLS))
+ {
ret = win32_get_security_descriptor(root, sd_set, path, state,
add_image_flags);
if (ret)
path_num_chars,
inode,
lookup_table,
- file_size);
+ file_size,
+ vol_flags);
if (ret)
goto out_close_handle;
ret = win32_recurse_directory(root,
config,
add_image_flags,
progress_func,
- state);
+ state,
+ vol_flags);
} else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
/* Reparse point: save the reparse tag and data. Alternate data
* streams are not captured, if it's even possible for a reparse
path_num_chars,
inode,
lookup_table,
- file_size);
+ file_size,
+ vol_flags);
}
out_close_handle:
CloseHandle(hFile);
wchar_t *path;
int ret;
struct win32_capture_state state;
+ unsigned vol_flags;
path_nchars = wcslen(root_disk_path);
if (path_nchars > 32767)
return WIMLIB_ERR_INVALID_PARAM;
+ win32_get_vol_flags(root_disk_path, &vol_flags);
+
/* There is no check for overflow later when this buffer is being used!
* But the max path length on NTFS is 32767 characters, and paths need
* to be written specially to even go past 260 characters, so we should
config,
add_image_flags,
progress_func,
- &state);
+ &state,
+ vol_flags);
FREE(path);
if (ret == 0)
win32_do_capture_warnings(&state, add_image_flags);
NULL, 0,
&bytesReturned, NULL))
{
- /* Warning only */
+ /* Could be a warning only, but we only call this if the volume
+ * supports compression. So I'm calling this an error. */
DWORD err = GetLastError();
- WARNING("Failed to set compression flag on \"%ls\"", path);
+ ERROR("Failed to set compression flag on \"%ls\"", path);
win32_error(err);
+ return WIMLIB_ERR_WRITE;
}
return 0;
}
NULL, 0,
&bytesReturned, NULL))
{
- /* Warning only */
+ /* Could be a warning only, but we only call this if the volume
+ * supports sparse files. So I'm calling this an error. */
DWORD err = GetLastError();
WARNING("Failed to set sparse flag on \"%ls\"", path);
win32_error(err);
+ return WIMLIB_ERR_WRITE;
}
return 0;
}
}
static int
-do_win32_extract_encryted_stream(const wchar_t *path,
- const struct wim_lookup_table_entry *lte)
+do_win32_extract_encrypted_stream(const wchar_t *path,
+ const struct wim_lookup_table_entry *lte)
{
ERROR("Extrat encryted streams not implemented");
return WIMLIB_ERR_INVALID_PARAM;
FILE_ATTRIBUTE_SPARSE_FILE)) != 0;
}
+/* Set compression or sparse attributes, and reparse data, if supported by the
+ * volume. */
static int
win32_set_special_attributes(HANDLE hFile, const struct wim_inode *inode,
struct wim_lookup_table_entry *unnamed_stream_lte,
- const wchar_t *path)
+ const wchar_t *path, unsigned vol_flags)
{
int ret;
- if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
- DEBUG("Setting reparse data on \"%ls\"", path);
- ret = win32_set_reparse_data(hFile, inode->i_reparse_tag,
- unnamed_stream_lte, path);
- if (ret)
- return ret;
- }
-
if (inode->i_attributes & FILE_ATTRIBUTE_COMPRESSED) {
- DEBUG("Setting compression flag on \"%ls\"", path);
- ret = win32_set_compressed(hFile, path);
- if (ret)
- return ret;
+ if (vol_flags & FILE_FILE_COMPRESSION) {
+ DEBUG("Setting compression flag on \"%ls\"", path);
+ ret = win32_set_compressed(hFile, path);
+ if (ret)
+ return ret;
+ } else {
+ DEBUG("Cannot set compression attribute on \"%ls\": "
+ "volume does not support transparent compression",
+ path);
+ }
}
if (inode->i_attributes & FILE_ATTRIBUTE_SPARSE_FILE) {
- DEBUG("Setting sparse flag on \"%ls\"", path);
- ret = win32_set_sparse(hFile, path);
- if (ret)
- return ret;
+ if (vol_flags & FILE_SUPPORTS_SPARSE_FILES) {
+ DEBUG("Setting sparse flag on \"%ls\"", path);
+ ret = win32_set_sparse(hFile, path);
+ if (ret)
+ return ret;
+ } else {
+ DEBUG("Cannot set sparse attribute on \"%ls\": "
+ "volume does not support sparse files",
+ path);
+ }
}
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+ if (vol_flags & FILE_SUPPORTS_REPARSE_POINTS) {
+ DEBUG("Setting reparse data on \"%ls\"", path);
+ ret = win32_set_reparse_data(hFile, inode->i_reparse_tag,
+ unnamed_stream_lte, path);
+ if (ret)
+ return ret;
+ } else {
+ DEBUG("Cannot set reparse data on \"%ls\": volume "
+ "does not support reparse points", path);
+ }
+ }
+
return 0;
}
win32_extract_stream(const struct wim_inode *inode,
const wchar_t *path,
const wchar_t *stream_name_utf16,
- struct wim_lookup_table_entry *lte)
+ struct wim_lookup_table_entry *lte,
+ unsigned vol_flags)
{
wchar_t *stream_path;
HANDLE h;
ret = 0;
goto out;
}
+ DEBUG("Directory \"%ls\" has special attributes!",
+ stream_path);
creationDisposition = OPEN_EXISTING;
}
}
}
if (stream_name_utf16 == NULL && inode_has_special_attributes(inode)) {
- ret = win32_set_special_attributes(h, inode, lte, path);
+ ret = win32_set_special_attributes(h, inode, lte, path,
+ vol_flags);
if (ret)
goto fail_close_handle;
}
DEBUG("Extracting \"%ls\" (len = %"PRIu64")",
stream_path, wim_resource_size(lte));
if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED
- && stream_name_utf16 == NULL) {
- ret = do_win32_extract_encryted_stream(stream_path,
- lte);
+ && stream_name_utf16 == NULL
+ && (vol_flags & FILE_SUPPORTS_ENCRYPTION))
+ {
+ ret = do_win32_extract_encrypted_stream(stream_path,
+ lte);
} else {
ret = do_win32_extract_stream(h, lte);
}
*/
static int
win32_extract_streams(const struct wim_inode *inode,
- const wchar_t *path, u64 *completed_bytes_p)
+ const wchar_t *path, u64 *completed_bytes_p,
+ unsigned vol_flags)
{
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);
+ ret = win32_extract_stream(inode, path, NULL, unnamed_lte,
+ vol_flags);
if (ret)
goto out;
if (unnamed_lte)
*completed_bytes_p += wim_resource_size(unnamed_lte);
+
+ if (!(vol_flags & FILE_NAMED_STREAMS))
+ 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_nbytes != 0) {
ret = win32_extract_stream(inode,
path,
ads_entry->stream_name,
- ads_entry->lte);
+ ads_entry->lte,
+ vol_flags);
if (ret)
break;
if (ads_entry->lte)
struct wim_inode *inode = dentry->d_inode;
DWORD err;
+ if (!args->have_vol_flags) {
+ win32_get_vol_flags(output_path, &args->vol_flags);
+ args->have_vol_flags = true;
+ /* Warn the user about data that may not be extracted. */
+ if (!(args->vol_flags & FILE_SUPPORTS_SPARSE_FILES))
+ WARNING("Volume does not support sparse files!\n"
+ " Sparse files will be extracted as non-sparse.");
+ if (!(args->vol_flags & FILE_SUPPORTS_REPARSE_POINTS))
+ WARNING("Volume does not support reparse points!\n"
+ " Reparse point data will not be extracted.");
+ if (!(args->vol_flags & FILE_NAMED_STREAMS)) {
+ WARNING("Volume does not support named data streams!\n"
+ " Named data streams will not be extracted.");
+ }
+ if (!(args->vol_flags & FILE_SUPPORTS_ENCRYPTION)) {
+ WARNING("Volume does not support encryption!\n"
+ " Encrypted files will be extracted as raw data.");
+ }
+ if (!(args->vol_flags & FILE_FILE_COMPRESSION)) {
+ WARNING("Volume does not support transparent compression!\n"
+ " Compressed files will be extracted as non-compressed.");
+ }
+ if (!(args->vol_flags & FILE_PERSISTENT_ACLS)) {
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_STRICT_ACLS) {
+ ERROR("Strict ACLs requested, but the volume does not "
+ "support ACLs!");
+ return WIMLIB_ERR_VOLUME_LACKS_FEATURES;
+ } else {
+ WARNING("Volume does not support persistent ACLS!\n"
+ " File permissions will not be extracted.");
+ }
+ }
+ }
+
if (inode->i_nlink > 1 && inode->i_extracted_file != NULL) {
/* Linked file, with another name already extracted. Create a
* hard link. */
+
+ /* There is a volume flag for this (FILE_SUPPORTS_HARD_LINKS),
+ * but it's only available on Windows 7 and later. So no use
+ * even checking it, really. Instead, CreateHardLinkW() will
+ * apparently return ERROR_INVALID_FUNCTION if the volume does
+ * not support hard links. */
DEBUG("Creating hard link \"%ls => %ls\"",
output_path, inode->i_extracted_file);
- if (!CreateHardLinkW(output_path, inode->i_extracted_file, NULL)) {
- err = GetLastError();
+ if (CreateHardLinkW(output_path, inode->i_extracted_file, NULL))
+ return 0;
+
+ err = GetLastError();
+ if (err != ERROR_INVALID_FUNCTION) {
ERROR("Can't create hard link \"%ls => %ls\"",
output_path, inode->i_extracted_file);
win32_error(err);
return WIMLIB_ERR_LINK;
+ } else {
+ WARNING("Can't create hard link \"%ls => %ls\":\n"
+ " Volume does not support hard links!\n"
+ " Falling back to extracting a copy of the file.");
}
- } else {
- /* Create the file, directory, or reparse point, and extract the
- * data streams. */
- ret = win32_extract_streams(inode, output_path,
- &args->progress.extract.completed_bytes);
+ }
+ /* Create the file, directory, or reparse point, and extract the
+ * data streams. */
+ ret = win32_extract_streams(inode, output_path,
+ &args->progress.extract.completed_bytes,
+ args->vol_flags);
+ if (ret)
+ return ret;
+
+ if (inode->i_security_id >= 0 &&
+ !(args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_ACLS)
+ && (args->vol_flags & FILE_PERSISTENT_ACLS))
+ {
+ ret = win32_set_security_data(inode, output_path, args);
if (ret)
return ret;
-
- if (inode->i_security_id >= 0 &&
- !(args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_ACLS))
- {
- ret = win32_set_security_data(inode, output_path, args);
- if (ret)
- return ret;
- }
- if (inode->i_nlink > 1) {
- /* Save extracted path for a later call to
- * CreateHardLinkW() if this inode has multiple links.
- * */
- inode->i_extracted_file = WSTRDUP(output_path);
- if (!inode->i_extracted_file)
- ret = WIMLIB_ERR_NOMEM;
- }
+ }
+ if (inode->i_nlink > 1) {
+ /* Save extracted path for a later call to
+ * CreateHardLinkW() if this inode has multiple links.
+ * */
+ inode->i_extracted_file = WSTRDUP(output_path);
+ if (!inode->i_extracted_file)
+ ret = WIMLIB_ERR_NOMEM;
}
return 0;
}
git://wimlib.net / wimlib / commitdiff