Workaround for WOF incompatibility

[wimlib] / src / wimboot.c

diff --git a/src/wimboot.c b/src/wimboot.c
index 35fe13a97e6fc12ff052b93d23fc4b73cb017659..cff73e8fb33000e68f6b63cd007c40aad8e79fb1 100644 (file)
--- a/src/wimboot.c
+++ b/src/wimboot.c
@@ -13,20 +13,18 @@
 /*
  * 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__
@@ -831,26 +829,6 @@ out:
        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
@@ -1044,10 +1022,10 @@ out:
  * This turns it into a reparse point that redirects accesses to it, to the
  * corresponding resource in the WIM archive.
  *
- * @attr
- *     Object attributes that specify the path to the file.
+ * @h
+ *     Open handle to the file, with GENERIC_WRITE access.
  * @printable_name
- *     Printable representation of the path encoded in @attr.
+ *     Printable representation of the path to the file.
  * @lte
  *     Unnamed data stream of the file.
  * @data_source_id
@@ -1061,30 +1039,16 @@ out:
  * Returns 0 on success, or a positive error code on failure.
  */
 int
-wimboot_set_pointer(OBJECT_ATTRIBUTES *attr,
+wimboot_set_pointer(HANDLE h,
                    const wchar_t *printable_name,
                    const struct wim_lookup_table_entry *lte,
                    u64 data_source_id,
                    const u8 lookup_table_hash[SHA1_HASH_SIZE],
                    bool wof_running)
 {
-       int ret;
-       HANDLE h = NULL;
-       NTSTATUS status;
-       IO_STATUS_BLOCK iosb;
        DWORD bytes_returned;
        DWORD err;
 
-       status = (*func_NtOpenFile)(&h, GENERIC_WRITE | SYNCHRONIZE, attr,
-                                   &iosb, FILE_SHARE_VALID_FLAGS,
-                                   FILE_OPEN_FOR_BACKUP_INTENT |
-                                       FILE_OPEN_REPARSE_POINT |
-                                       FILE_SYNCHRONOUS_IO_NONALERT);
-       if (!NT_SUCCESS(status)) {
-               SetLastError((*func_RtlNtStatusToDosError)(status));
-               goto fail;
-       }
-
        if (wof_running) {
                /* The WOF driver is running.  We can create the reparse point
                 * using FSCTL_SET_EXTERNAL_BACKING.  */
@@ -1164,20 +1128,14 @@ wimboot_set_pointer(OBJECT_ATTRIBUTES *attr,
                        goto fail;
        }
 
-       ret = 0;
-       goto out;
+       return 0;
 
 fail:
        err = GetLastError();
        set_errno_from_win32_error(err);
        ERROR_WITH_ERRNO("\"%ls\": Couldn't set WIMBoot pointer data "
                         "(err=%"PRIu32")", printable_name, (u32)err);
-       ret = WIMLIB_ERR_WIMBOOT;
-out:
-       if (h)
-               (*func_NtClose)(h);
-       return ret;
-
+       return WIMLIB_ERR_WIMBOOT;
 }
 
 #endif /* __WIN32__ */