-#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 = %zu)",
- stream_path, wim_resource_size(lte));
- ret = do_win32_extract_stream(h, lte);
- if (ret)
- goto fail_close_handle;
- }
- }