#include <errno.h>
+
+
+/* Pointers to functions that are not available on all targetted versions of
+ * Windows (XP and later). NOTE: The WINAPI annotations seem to be important; I
+ * assume it specifies a certain calling convention. */
+
+/* Vista and later */
+static HANDLE (WINAPI *win32func_FindFirstStreamW)(LPCWSTR lpFileName,
+ STREAM_INFO_LEVELS InfoLevel,
+ LPVOID lpFindStreamData,
+ DWORD dwFlags) = NULL;
+
+/* Vista and later */
+static BOOL (WINAPI *win32func_FindNextStreamW)(HANDLE hFindStream,
+ LPVOID lpFindStreamData) = NULL;
+
+static HMODULE hKernel32 = NULL;
+
+/* Try to dynamically load some functions */
+void
+win32_global_init()
+{
+ DWORD err;
+ bool warned;
+
+
+ if (hKernel32 == NULL) {
+ DEBUG("Loading Kernel32.dll");
+ hKernel32 = LoadLibraryA("Kernel32.dll");
+ if (hKernel32 == NULL) {
+ err = GetLastError();
+ WARNING("Can't load Kernel32.dll");
+ win32_error(err);
+ return;
+ }
+ }
+
+ DEBUG("Looking for FindFirstStreamW");
+ win32func_FindFirstStreamW = (void*)GetProcAddress(hKernel32, "FindFirstStreamW");
+ if (!win32func_FindFirstStreamW) {
+ WARNING("Could not find function FindFirstStreamW() in Kernel32.dll!");
+ WARNING("Capturing alternate data streams will not be supported.");
+ return;
+ }
+
+ DEBUG("Looking for FindNextStreamW");
+ win32func_FindNextStreamW = (void*)GetProcAddress(hKernel32, "FindNextStreamW");
+ if (!win32func_FindNextStreamW) {
+ WARNING("Could not find function FindNextStreamW() in Kernel32.dll!");
+ WARNING("Capturing alternate data streams will not be supported.");
+ win32func_FindFirstStreamW = NULL;
+ }
+}
+
+void
+win32_global_cleanup()
+{
+ if (hKernel32 != NULL) {
+ DEBUG("Closing Kernel32.dll");
+ FreeLibrary(hKernel32);
+ hKernel32 = NULL;
+ }
+}
+
static const char *access_denied_msg =
" If you are not running this program as the administrator, you may\n"
" need to do so, so that all data and metadata can be backed up.\n"
}
#endif
-HANDLE
-win32_open_file_readonly(const wchar_t *path, bool data_only)
+static HANDLE
+win32_open_existing_file(const wchar_t *path, DWORD dwDesiredAccess)
{
- DWORD dwDesiredAccess = FILE_READ_DATA;
- if (!data_only)
- dwDesiredAccess |= FILE_READ_ATTRIBUTES | READ_CONTROL | ACCESS_SYSTEM_SECURITY;
return CreateFileW(path,
dwDesiredAccess,
FILE_SHARE_READ,
NULL /* hTemplateFile */);
}
+HANDLE
+win32_open_file_data_only(const wchar_t *path)
+{
+ return win32_open_existing_file(path, FILE_READ_DATA);
+}
+
int
-win32_read_file(const mbchar *filename,
+win32_read_file(const utf16lechar *win32_filename,
void *handle, u64 offset, size_t size, void *buf)
{
HANDLE h = handle;
if (ReadFile(h, buf, size, &bytesRead, NULL) && bytesRead == size)
return 0;
err = GetLastError();
- ERROR("Error reading \"%s\"", filename);
+ ERROR("Error reading \"%ls\"", win32_filename);
win32_error(err);
return WIMLIB_ERR_READ;
}
ret = 0;
do {
/* Skip . and .. entries */
- if (!(dat.cFileName[0] == L'.' &&
- (dat.cFileName[1] == L'\0' ||
- (dat.cFileName[1] == L'.' && dat.cFileName[2] == L'\0'))))
+ if (!(dat.cFileName[0] == cpu_to_le16(L'.') &&
+ (dat.cFileName[1] == cpu_to_le16(L'\0') ||
+ (dat.cFileName[1] == cpu_to_le16(L'.') &&
+ dat.cFileName[2] == cpu_to_le16(L'\0')))))
{
struct wim_dentry *child;
* for the reparse point unless an entry already exists for
* the exact same data stream.
*
- * @path: External path to the parse point (UTF-8). Used for error messages
- * only.
+ * @path: External path to the reparse point. Used for error messages only.
*
* Returns 0 on success; nonzero on failure. */
static int
DWORD bytesReturned;
if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
- NULL, 0, reparse_point_buf,
- sizeof(reparse_point_buf), &bytesReturned, NULL))
+ NULL, /* "Not used with this operation; set to NULL" */
+ 0, /* "Not used with this operation; set to 0" */
+ reparse_point_buf, /* "A pointer to a buffer that
+ receives the reparse point data */
+ sizeof(reparse_point_buf), /* "The size of the output
+ buffer, in bytes */
+ &bytesReturned,
+ NULL))
{
DWORD err = GetLastError();
ERROR("Win32 API: Failed to get reparse data of \"%s\"", path);
}
inode->i_reparse_tag = le32_to_cpu(*(u32*)reparse_point_buf);
return inode_add_ads_with_data(inode, "",
- (const u8*)reparse_point_buf + 8,
+ reparse_point_buf + 8,
bytesReturned - 8, lookup_table);
}
DWORD bytesRead;
int ret;
- hFile = win32_open_file_readonly(path, false);
+ hFile = win32_open_file_data_only(path);
if (hFile == INVALID_HANDLE_VALUE)
return WIMLIB_ERR_OPEN;
u8 hash[SHA1_HASH_SIZE];
struct wim_lookup_table_entry *lte;
int ret;
- wchar_t *p, *colon;
+ wchar_t *stream_name, *colon;
+ size_t stream_name_nchars;
bool is_named_stream;
wchar_t *spath;
size_t spath_nchars;
DWORD err;
+ size_t spath_buf_nbytes;
+ const wchar_t *relpath_prefix;
+ const wchar_t *colonchar;
/* The stream name should be returned as :NAME:TYPE */
- p = dat->cStreamName;
- if (*p != L':')
+ stream_name = dat->cStreamName;
+ if (*stream_name != L':')
goto out_invalid_stream_name;
- p += 1;
- colon = wcschr(p, L':');
+ stream_name += 1;
+ colon = wcschr(stream_name, L':');
if (colon == NULL)
goto out_invalid_stream_name;
goto out;
}
- is_named_stream = (p != colon);
+ *colon = '\0';
+
+ stream_name_nchars = colon - stream_name;
+ is_named_stream = (stream_name_nchars != 0);
+
if (is_named_stream) {
/* Allocate an ADS entry for the named stream. */
- mbchar *mbs_stream_name;
- size_t mbs_stream_name_nbytes;
- ret = utf16le_to_mbs(p,
- (colon - p) * sizeof(wchar_t),
- &mbs_stream_name,
- &mbs_stream_name_nbytes);
- if (ret)
- goto out;
- ads_entry = inode_add_ads(inode, mbs_stream_name);
- FREE(mbs_stream_name);
+ ads_entry = inode_add_ads_utf16le(inode, stream_name,
+ stream_name_nchars * 2);
if (!ads_entry) {
ret = WIMLIB_ERR_NOMEM;
goto out;
}
}
- /* Create a UTF-16 string @spath that gives the filename, then a colon,
- * then the stream name. Or, if it's an unnamed stream, just the
+ /* Create a UTF-16LE string @spath that gives the filename, then a
+ * colon, then the stream name. Or, if it's an unnamed stream, just the
* filename. It is MALLOC()'ed so that it can be saved in the
- * wim_lookup_table_entry if needed. */
- *colon = '\0';
+ * wim_lookup_table_entry if needed.
+ *
+ * As yet another special case, relative paths need to be changed to
+ * begin with an explicit "./" so that, for example, a file t:ads, where
+ * :ads is the part we added, is not interpreted as a file on the t:
+ * drive. */
spath_nchars = path_utf16_nchars;
- if (is_named_stream)
- spath_nchars += colon - p + 1;
-
- spath = MALLOC((spath_nchars + 1) * sizeof(wchar_t));
- memcpy(spath, path_utf16, path_utf16_nchars * sizeof(wchar_t));
+ relpath_prefix = L"";
+ colonchar = L"";
if (is_named_stream) {
- spath[path_utf16_nchars] = L':';
- memcpy(&spath[path_utf16_nchars + 1], p, (colon - p) * sizeof(wchar_t));
+ spath_nchars += 1 + stream_name_nchars;
+ colonchar = L":";
+ if (path_utf16_nchars == 1 &&
+ path_utf16[0] != cpu_to_le16('/') &&
+ path_utf16[0] != cpu_to_le16('\\'))
+ {
+ spath_nchars += 2;
+ relpath_prefix = L"./";
+ }
}
- spath[spath_nchars] = L'\0';
+
+ spath_buf_nbytes = (spath_nchars + 1) * sizeof(wchar_t);
+ spath = MALLOC(spath_buf_nbytes);
+
+ swprintf(spath, spath_buf_nbytes, L"%ls%ls%ls%ls",
+ relpath_prefix, path_utf16, colonchar, stream_name);
ret = win32_sha1sum(spath, hash);
if (ret) {
err = GetLastError();
ERROR("Win32 API: Failed to read \"%ls\" to calculate SHA1sum",
- path_utf16);
+ spath);
win32_error(err);
goto out_free_spath;
}
*
* @lookup_table: Stream lookup table for the WIM.
*
+ * @file_size: Size of unnamed data stream. (Used only if alternate
+ * data streams API appears to be unavailable.)
+ *
* Returns 0 on success; nonzero on failure.
*/
static int
win32_capture_streams(const wchar_t *path_utf16,
size_t path_utf16_nchars,
struct wim_inode *inode,
- struct wim_lookup_table *lookup_table)
+ struct wim_lookup_table *lookup_table,
+ u64 file_size)
{
WIN32_FIND_STREAM_DATA dat;
int ret;
HANDLE hFind;
DWORD err;
- hFind = FindFirstStreamW(path_utf16, FindStreamInfoStandard, &dat, 0);
+ if (win32func_FindFirstStreamW == NULL)
+ goto unnamed_only;
+
+ hFind = win32func_FindFirstStreamW(path_utf16, FindStreamInfoStandard, &dat, 0);
if (hFind == INVALID_HANDLE_VALUE) {
err = GetLastError();
+ if (err == ERROR_CALL_NOT_IMPLEMENTED)
+ goto unnamed_only;
+
/* Seems legal for this to return ERROR_HANDLE_EOF on reparse
* points and directories */
if ((inode->i_attributes &
&dat);
if (ret)
goto out_find_close;
- } while (FindNextStreamW(hFind, &dat));
+ } while (win32func_FindNextStreamW(hFind, &dat));
err = GetLastError();
if (err != ERROR_HANDLE_EOF) {
ERROR("Win32 API: Error reading data streams from \"%ls\"", path_utf16);
out_find_close:
FindClose(hFind);
return ret;
+unnamed_only:
+ if (inode->i_attributes &
+ (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
+ {
+ ret = 0;
+ } else {
+ wcscpy(dat.cStreamName, L"::$DATA");
+ dat.StreamSize.QuadPart = file_size;
+ ret = win32_capture_stream(path_utf16,
+ path_utf16_nchars,
+ inode, lookup_table,
+ &dat);
+ }
+ return ret;
}
/* Win32 version of capturing a directory tree */
size_t path_utf16_nchars;
struct sd_set *sd_set;
DWORD err;
+ u64 file_size;
if (exclude_path(root_disk_path, config, true)) {
if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) {
goto out_destroy_sd_set;
path_utf16_nchars = path_utf16_nbytes / sizeof(wchar_t);
- HANDLE hFile = win32_open_file_readonly(path_utf16, false);
+ HANDLE hFile = win32_open_existing_file(path_utf16,
+ FILE_READ_DATA | FILE_READ_ATTRIBUTES);
if (hFile == INVALID_HANDLE_VALUE) {
err = GetLastError();
ERROR("Win32 API: Failed to open \"%s\"", root_disk_path);
/* Get DOS name and security descriptor (if any). */
ret = win32_get_short_name(root, path_utf16);
- if (ret)
- goto out_close_handle;
- ret = win32_get_security_descriptor(root, sd_set, path_utf16);
if (ret)
goto out_close_handle;
+ if (!(add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)) {
+ ret = win32_get_security_descriptor(root, sd_set, path_utf16);
+ if (ret)
+ goto out_close_handle;
+ }
+
+ file_size = ((u64)file_info.nFileSizeHigh << 32) |
+ (u64)file_info.nFileSizeLow;
+
if (inode_is_directory(inode)) {
/* Directory (not a reparse point) --- recurse to children */
ret = win32_capture_streams(path_utf16,
path_utf16_nchars,
inode,
- lookup_table);
+ lookup_table,
+ file_size);
if (ret)
goto out_close_handle;
ret = win32_recurse_directory(root,
ret = win32_capture_streams(path_utf16,
path_utf16_nchars,
inode,
- lookup_table);
+ lookup_table,
+ file_size);
}
out_close_handle:
CloseHandle(hFile);
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,
+ const struct wim_security_data *security_data)
{
wchar_t *stream_path;
HANDLE h;
DWORD err;
DWORD creationDisposition = CREATE_ALWAYS;
+ SECURITY_ATTRIBUTES *secattr;
+
+ if (security_data && inode->i_security_id != -1) {
+ secattr = alloca(sizeof(*secattr));
+ secattr->nLength = sizeof(*secattr);
+ secattr->lpSecurityDescriptor = security_data->descriptors[inode->i_security_id];
+ secattr->bInheritHandle = FALSE;
+ } else {
+ secattr = NULL;
+ }
+
if (stream_name_utf16) {
/* Named stream. Create a buffer that contains the UTF-16LE
- * string [./]@path:@stream_name_utf16. This is needed to
+ * 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
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'\\') {
+ if (path[0] != cpu_to_le16(L'\0') &&
+ path[0] != cpu_to_le16(L'/') &&
+ path[0] != cpu_to_le16(L'\\') &&
+ path[1] != cpu_to_le16(L':'))
+ {
prefix = L"./";
stream_path_nchars += 2;
} else {
* 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)) {
+ if (!CreateDirectoryW(stream_path, secattr)) {
err = GetLastError();
if (err != ERROR_ALREADY_EXISTS) {
ERROR("Failed to create directory \"%ls\"",
DEBUG("Opening \"%ls\"", stream_path);
h = CreateFileW(stream_path,
- GENERIC_WRITE | WRITE_OWNER | WRITE_DAC | ACCESS_SYSTEM_SECURITY,
+ GENERIC_WRITE,
0,
- NULL,
+ secattr,
creationDisposition,
FILE_FLAG_OPEN_REPARSE_POINT |
FILE_FLAG_BACKUP_SEMANTICS |
*/
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,
+ const struct wim_security_data *security_data)
{
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,
+ security_data);
if (ret)
goto out;
if (unnamed_lte)
ret = win32_extract_stream(inode,
path,
ads_entry->stream_name,
- ads_entry->lte);
+ ads_entry->lte,
+ NULL);
if (ret)
break;
if (ads_entry->lte)
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;
-}
-
/* Extract a file, directory, reparse point, or hard link to an
* already-extracted file using the Win32 API */
int win32_do_apply_dentry(const mbchar *output_path,
} else {
/* Create the file, directory, or reparse point, and extract the
* data streams. */
+ const struct wim_security_data *security_data;
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_NOACLS)
+ security_data = NULL;
+ else
+ security_data = wim_const_security_data(args->w);
+
ret = win32_extract_streams(inode, utf16le_path,
- &args->progress.extract.completed_bytes);
+ &args->progress.extract.completed_bytes,
+ security_data);
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,
- utf16le_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.
return ret;
DEBUG("Opening \"%s\" to set timestamps", output_path);
- h = CreateFileW(utf16le_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);
+ h = win32_open_existing_file(utf16le_path, FILE_WRITE_ATTRIBUTES);
if (h == INVALID_HANDLE_VALUE)
err = GetLastError();
git://wimlib.net / wimlib / blobdiff