/*
* Copyright (C) 2014 Eric Biggers
*
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
*
- * wimlib is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 3 of the License, or (at your option)
- * any later version.
- *
- * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- * A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * This file is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
- * You should have received a copy of the GNU General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
*/
+#ifdef __WIN32__
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
-#ifdef __WIN32__
-
#include "wimlib/win32_common.h"
#include "wimlib/win32.h"
#include "wimlib/assert.h"
open_file(const wchar_t *device_name, DWORD desiredAccess)
{
return CreateFile(device_name, desiredAccess,
- FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
- NULL, OPEN_EXISTING,
+ FILE_SHARE_VALID_FLAGS, NULL, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS, NULL);
}
*/
static int
query_partition_and_disk_info(const wchar_t *path,
- PARTITION_INFORMATION_EX *part_info_ret,
+ PARTITION_INFORMATION_EX *part_info,
DRIVE_LAYOUT_INFORMATION_EX *drive_info_ret)
{
- HANDLE h;
wchar_t vol_name[] = L"\\\\.\\X:";
wchar_t disk_name[] = L"\\\\?\\PhysicalDriveXXXXXXXXXX";
-
- PARTITION_INFORMATION_EX part_info;
- size_t extents_size = sizeof(VOLUME_DISK_EXTENTS) + 4 * sizeof(DISK_EXTENT);
- VOLUME_DISK_EXTENTS *extents = alloca(extents_size);
- size_t drive_info_size = sizeof(DRIVE_LAYOUT_INFORMATION_EX) +
- 8 * sizeof(PARTITION_INFORMATION_EX);
- DRIVE_LAYOUT_INFORMATION_EX *drive_info = alloca(drive_info_size);
+ HANDLE h = INVALID_HANDLE_VALUE;
+ VOLUME_DISK_EXTENTS *extents = NULL;
+ size_t extents_size;
+ DRIVE_LAYOUT_INFORMATION_EX *drive_info = NULL;
+ size_t drive_info_size;
+ int ret;
wimlib_assert(path[0] != L'\0' && path[1] == L':');
h = open_file(vol_name, GENERIC_READ);
if (h == INVALID_HANDLE_VALUE) {
- set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("\"%ls\": Can't open volume device", vol_name);
- return WIMLIB_ERR_OPEN;
+ ERROR("\"%ls\": Can't open volume device (err=%"PRIu32")",
+ vol_name, (u32)GetLastError());
+ ret = WIMLIB_ERR_OPEN;
+ goto out;
}
if (!query_device(h, IOCTL_DISK_GET_PARTITION_INFO_EX,
- &part_info, sizeof(part_info)))
+ part_info, sizeof(PARTITION_INFORMATION_EX)))
{
- ERROR("\"%ls\": Can't get partition info (err=0x%08"PRIx32")",
+ ERROR("\"%ls\": Can't get partition info (err=%"PRIu32")",
vol_name, (u32)GetLastError());
- CloseHandle(h);
- return WIMLIB_ERR_READ;
+ ret = WIMLIB_ERR_READ;
+ goto out;
}
- if (!query_device(h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
- extents, extents_size))
- {
- ERROR("\"%ls\": Can't get volume extent info (err=0x%08"PRIx32")",
- vol_name, (u32)GetLastError());
- CloseHandle(h);
- return WIMLIB_ERR_READ;
+ extents_size = sizeof(VOLUME_DISK_EXTENTS);
+ for (;;) {
+ extents_size += 4 * sizeof(DISK_EXTENT);
+ extents = MALLOC(extents_size);
+ if (!extents) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out;
+ }
+
+ if (query_device(h, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS,
+ extents, extents_size))
+ break;
+ if (GetLastError() != ERROR_MORE_DATA) {
+ ERROR("\"%ls\": Can't get volume extent info (err=%"PRIu32")",
+ vol_name, (u32)GetLastError());
+ ret = WIMLIB_ERR_READ;
+ goto out;
+ }
+ FREE(extents);
}
CloseHandle(h);
+ h = INVALID_HANDLE_VALUE;
if (extents->NumberOfDiskExtents != 1) {
ERROR("\"%ls\": This volume has %"PRIu32" disk extents, "
"but this code is untested for more than 1",
vol_name, (u32)extents->NumberOfDiskExtents);
- return WIMLIB_ERR_UNSUPPORTED;
+ ret = WIMLIB_ERR_UNSUPPORTED;
+ goto out;
}
wsprintf(wcschr(disk_name, L'X'), L"%"PRIu32,
h = open_file(disk_name, GENERIC_READ);
if (h == INVALID_HANDLE_VALUE) {
- set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("\"%ls\": Can't open disk device", disk_name);
- return WIMLIB_ERR_OPEN;
+ ERROR("\"%ls\": Can't open disk device (err=%"PRIu32")",
+ disk_name, (u32)GetLastError());
+ ret = WIMLIB_ERR_OPEN;
+ goto out;
}
- if (!query_device(h, IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
- drive_info, drive_info_size))
- {
- ERROR("\"%ls\": Can't get disk info (err=0x%08"PRIx32")",
- disk_name, (u32)GetLastError());
- CloseHandle(h);
- return WIMLIB_ERR_READ;
+ drive_info_size = sizeof(DRIVE_LAYOUT_INFORMATION_EX);
+ for (;;) {
+ drive_info_size += 4 * sizeof(PARTITION_INFORMATION_EX);
+ drive_info = MALLOC(drive_info_size);
+ if (!drive_info) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out;
+ }
+
+ if (query_device(h, IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
+ drive_info, drive_info_size))
+ break;
+ if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ ERROR("\"%ls\": Can't get disk info (err=%"PRIu32")",
+ disk_name, (u32)GetLastError());
+ ret = WIMLIB_ERR_READ;
+ goto out;
+ }
+ FREE(drive_info);
}
+ *drive_info_ret = *drive_info; /* doesn't include partitions */
CloseHandle(h);
+ h = INVALID_HANDLE_VALUE;
- if (drive_info->PartitionStyle != part_info.PartitionStyle) {
+ if (drive_info->PartitionStyle != part_info->PartitionStyle) {
ERROR("\"%ls\", \"%ls\": Inconsistent partition table type!",
vol_name, disk_name);
- return WIMLIB_ERR_UNSUPPORTED;
+ ret = WIMLIB_ERR_UNSUPPORTED;
+ goto out;
}
- if (part_info.PartitionStyle == PARTITION_STYLE_GPT) {
- BUILD_BUG_ON(sizeof(part_info.Gpt.PartitionId) !=
+ if (part_info->PartitionStyle == PARTITION_STYLE_GPT) {
+ BUILD_BUG_ON(sizeof(part_info->Gpt.PartitionId) !=
sizeof(drive_info->Gpt.DiskId));
- if (!memcmp(&part_info.Gpt.PartitionId,
+ if (!memcmp(&part_info->Gpt.PartitionId,
&drive_info->Gpt.DiskId,
sizeof(drive_info->Gpt.DiskId)))
{
ERROR("\"%ls\", \"%ls\": Partition GUID is the "
"same as the disk GUID???", vol_name, disk_name);
- return WIMLIB_ERR_UNSUPPORTED;
+ ret = WIMLIB_ERR_UNSUPPORTED;
+ goto out;
}
}
- if (part_info.PartitionStyle != PARTITION_STYLE_MBR &&
- part_info.PartitionStyle != PARTITION_STYLE_GPT)
+ if (part_info->PartitionStyle != PARTITION_STYLE_MBR &&
+ part_info->PartitionStyle != PARTITION_STYLE_GPT)
{
ERROR("\"%ls\": Unknown partition style 0x%08"PRIx32,
- vol_name, (u32)part_info.PartitionStyle);
- return WIMLIB_ERR_UNSUPPORTED;
+ vol_name, (u32)part_info->PartitionStyle);
+ ret = WIMLIB_ERR_UNSUPPORTED;
+ goto out;
}
- *part_info_ret = part_info;
- *drive_info_ret = *drive_info;
- return 0;
+ ret = 0;
+out:
+ FREE(extents);
+ FREE(drive_info);
+ if (h != INVALID_HANDLE_VALUE)
+ CloseHandle(h);
+ return ret;
}
/*
if (wimlib_print_errors) {
print_byte_field((const u8 *)hdr,
sizeof(struct WimOverlay_dat_header),
- stderr);
- fputc('\n', stderr);
+ wimlib_error_file);
+ fputc('\n', wimlib_error_file);
}
ret = WIMLIB_ERR_UNSUPPORTED;
goto out_free_contents;
path, i, entry_1->data_source_id);
if (wimlib_print_errors) {
print_byte_field((const u8 *)entry_2->wim_file_name,
- wim_file_name_length, stderr);
- fputc('\n', stderr);
+ wim_file_name_length,
+ wimlib_error_file);
+ fputc('\n', wimlib_error_file);
}
ret = WIMLIB_ERR_UNSUPPORTED;
goto out_free_contents;
if (wimlib_print_errors) {
print_byte_field((const u8 *)entry_2,
entry_1->entry_2_length,
- stderr);
- fputc('\n', stderr);
+ wimlib_error_file);
+ fputc('\n', wimlib_error_file);
}
ret = WIMLIB_ERR_UNSUPPORTED;
goto out_free_contents;
if (ret) {
ERROR_WITH_ERRNO("Can't rename \"%ls\" => \"%ls\"",
path_main, path_wimlib_backup);
+ ret = WIMLIB_ERR_RENAME;
goto out_free_new_contents;
}
}
if (ret) {
ERROR_WITH_ERRNO("Can't rename \"%ls\" => \"%ls\"",
path_new, path_main);
+ ret = WIMLIB_ERR_RENAME;
}
out_free_new_contents:
FREE(new_contents);
return ret;
}
-static int
-win32_get_drive_path(const wchar_t *file_path, wchar_t drive_path[7])
-{
- tchar *file_abspath;
-
- file_abspath = realpath(file_path, NULL);
- if (!file_abspath)
- return WIMLIB_ERR_NOMEM;
-
- if (file_abspath[0] == L'\0' || file_abspath[1] != L':') {
- ERROR("\"%ls\": Path format not recognized", file_abspath);
- FREE(file_abspath);
- return WIMLIB_ERR_UNSUPPORTED;
- }
-
- wsprintf(drive_path, L"\\\\.\\%lc:", file_abspath[0]);
- FREE(file_abspath);
- return 0;
-}
-
/* Try to attach an instance of the Windows Overlay File System Filter Driver to
* the specified drive (such as C:) */
static bool
* @image
* Number of the image in the WIM being applied.
* @target
- * Path to the target drive.
+ * Path to the target directory.
* @data_source_id_ret
* On success, an identifier for the backing WIM file will be returned
* here.
* This turns it into a reparse point that redirects accesses to it, to the
* corresponding resource in the WIM archive.
*
- * @path
- * Path to extracted file (already created).
+ * @h
+ * Open handle to the file, with GENERIC_WRITE access.
* @lte
* Unnamed data stream of the file.
* @data_source_id
* %true if the WOF driver appears to be available and working; %false if
* not.
*
- * Returns 0 on success, or a positive error code on failure.
+ * Returns %true on success, or %false on failure with GetLastError() set.
*/
-int
-wimboot_set_pointer(const wchar_t *path,
+bool
+wimboot_set_pointer(HANDLE h,
const struct wim_lookup_table_entry *lte,
u64 data_source_id,
const u8 lookup_table_hash[SHA1_HASH_SIZE],
bool wof_running)
{
- HANDLE h;
DWORD bytes_returned;
- int ret;
-
-
- /* Open the file */
- h = win32_open_existing_file(path, GENERIC_WRITE);
- if (h == INVALID_HANDLE_VALUE) {
- set_errno_from_GetLastError();
- ret = WIMLIB_ERR_OPEN;
- goto out;
- }
+ DWORD err;
if (wof_running) {
/* The WOF driver is running. We can create the reparse point
* using FSCTL_SET_EXTERNAL_BACKING. */
-
+ unsigned int max_retries = 4;
struct {
struct wof_external_info wof_info;
struct wim_provider_external_info wim_info;
} in;
+ retry:
+ memset(&in, 0, sizeof(in));
+
in.wof_info.version = WOF_CURRENT_VERSION;
in.wof_info.provider = WOF_PROVIDER_WIM;
/* lookup_table_hash is not necessary */
if (!DeviceIoControl(h, FSCTL_SET_EXTERNAL_BACKING,
- &in, sizeof(in), NULL, 0, &bytes_returned, NULL))
- goto fail;
+ &in, sizeof(in), NULL, 0,
+ &bytes_returned, NULL))
+ {
+ /* Try to track down sporadic errors */
+ if (wimlib_print_errors) {
+ WARNING("FSCTL_SET_EXTERNAL_BACKING failed (err=%u); data was %zu bytes:",
+ (u32)GetLastError(), sizeof(in));
+ print_byte_field((const u8 *)&in, sizeof(in), wimlib_error_file);
+ putc('\n', wimlib_error_file);
+ }
+ if (--max_retries) {
+ WARNING("Retrying after 100ms...");
+ Sleep(100);
+ goto retry;
+ }
+ WARNING("Too many retries; returning failure");
+ return false;
+ }
} else {
/* The WOF driver is running. We need to create the reparse
if (!DeviceIoControl(h, FSCTL_SET_REPARSE_POINT,
&in, sizeof(in), NULL, 0, &bytes_returned, NULL))
- goto fail;
+ return false;
/* We also need to create an unnamed data stream of the correct
* size. Otherwise the file shows up as zero length. It can be
* are unimportant. */
if (!DeviceIoControl(h, FSCTL_SET_SPARSE, NULL, 0, NULL, 0,
&bytes_returned, NULL))
- goto fail;
+ return false;
if (!SetFilePointerEx(h,
(LARGE_INTEGER){ .QuadPart = lte->size},
NULL, FILE_BEGIN))
- goto fail;
+ return false;
if (!SetEndOfFile(h))
- goto fail;
+ return false;
}
- ret = 0;
-out_close_handle:
- CloseHandle(h);
-out:
- return ret;
-
-fail:
- {
- DWORD err = GetLastError();
- set_errno_from_win32_error(err);
- ERROR_WITH_ERRNO("\"%ls\": Couldn't set WIMBoot pointer data "
- "(err=0x%08"PRIx32")", path, (u32)err);
- ret = WIMLIB_ERR_WIMBOOT;
- goto out_close_handle;
- }
+ return true;
}
#endif /* __WIN32__ */
git://wimlib.net / wimlib / blobdiff