[cfinck] 75638: [FS_REC] Always register CDFS as a low-priority filesystem. This inserts it at the tail of the filesystem queue instead of the head, meaning UDF always takes precedence and UDF/CDFS...

Author: cfinck
Date: Tue Aug 22 09:09:19 2017
New Revision: 75638

URL: http://svn.reactos.org/svn/reactos?rev=75638&view=rev
Log:
[FS_REC]
Always register CDFS as a low-priority filesystem. This inserts it at the tail of the filesystem queue instead of the head, meaning UDF always takes precedence and UDF/CDFS hybrid media is properly detected as UDF.
Thanks to Pierre for the hint!

Should fix what's reported in https://jira.reactos.org/browse/CORE-9816?focusedCommentId=78820&page=co...

Modified:
    trunk/reactos/drivers/filesystems/fs_rec/fs_rec.c

Modified: trunk/reactos/drivers/filesystems/fs_rec/fs_rec.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fs_rec/...
==============================================================================
--- trunk/reactos/drivers/filesystems/fs_rec/fs_rec.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fs_rec/fs_rec.c	[iso-8859-1] Tue Aug 22 09:09:19 2017
@@ -220,7 +220,8 @@
                 IN PCWSTR FsName,
                 IN PCWSTR RecognizerName,
                 IN ULONG FsType,
-                IN DEVICE_TYPE DeviceType)
+                IN DEVICE_TYPE DeviceType,
+                IN ULONG AdditionalFlags)
 {
     OBJECT_ATTRIBUTES ObjectAttributes;
     IO_STATUS_BLOCK IoStatus;
@@ -278,6 +279,9 @@
                             &DeviceObject);
     if (NT_SUCCESS(Status))
     {
+        /* Set additional flags in the device object */
+        DeviceObject->Flags |= AdditionalFlags;
+
         /* Get the device extension and set it up */
         DeviceExtension = DeviceObject->DeviceExtension;
         DeviceExtension->FsType = FsType;
@@ -348,7 +352,8 @@
                              L"\Cdfs",
                              L"\FileSystem\CdfsRecognizer",
                              FS_TYPE_CDFS,
-                             FILE_DEVICE_CD_ROM_FILE_SYSTEM);
+                             FILE_DEVICE_CD_ROM_FILE_SYSTEM,
+                             DO_LOW_PRIORITY_FILESYSTEM);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register CDFS for HDDs */
@@ -358,7 +363,8 @@
                              L"\CdfsHdd",
                              L"\FileSystem\CdfsHddRecognizer",
                              FS_TYPE_CDFS,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             DO_LOW_PRIORITY_FILESYSTEM);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register UDFS for CDs */
@@ -368,7 +374,8 @@
                              L"\UdfsCdRom",
                              L"\FileSystem\UdfsCdRomRecognizer",
                              FS_TYPE_UDFS,
-                             FILE_DEVICE_CD_ROM_FILE_SYSTEM);
+                             FILE_DEVICE_CD_ROM_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register UDFS for HDDs */
@@ -378,7 +385,8 @@
                              L"\UdfsDisk",
                              L"\FileSystem\UdfsDiskRecognizer",
                              FS_TYPE_UDFS,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register FAT */
@@ -388,7 +396,8 @@
                              L"\Fat",
                              L"\FileSystem\FatRecognizer",
                              FS_TYPE_VFAT,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register NTFS */
@@ -398,7 +407,8 @@
                              L"\Ntfs",
                              L"\FileSystem\NtfsRecognizer",
                              FS_TYPE_NTFS,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register EXT2 */
@@ -408,7 +418,8 @@
                              L"\Ext2fs",
                              L"\FileSystem\Ext2Recognizer",
                              FS_TYPE_EXT2,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register BTRFS */
@@ -418,7 +429,8 @@
                              L"\Btrfs",
                              L"\FileSystem\BtrfsRecognizer",
                              FS_TYPE_BTRFS,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register REISERFS */
@@ -428,7 +440,8 @@
                              L"\Reiserfs",
                              L"\FileSystem\ReiserfsRecognizer",
                              FS_TYPE_REISERFS,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Register FFS */
@@ -438,7 +451,8 @@
                              L"\ffs",
                              L"\FileSystem\FfsRecognizer",
                              FS_TYPE_FFS,
-                             FILE_DEVICE_DISK_FILE_SYSTEM);
+                             FILE_DEVICE_DISK_FILE_SYSTEM,
+                             0);
     if (NT_SUCCESS(Status)) DeviceCount++;

/* Return appropriate Status */