[fireball] 36731: - Implement locking for Cc flush (the one used in NT5.2 results in a hang, might be because of a misused PagingIoResource). - If an acquire/release operation is not implemented, FSD must return STATUS_INVALID_DEVICE_REQUEST, not some other error code. - Fix a typo in the debug message.

Author: fireball
Date: Sun Oct 12 04:34:29 2008
New Revision: 36731

URL: http://svn.reactos.org/svn/reactos?rev=36731&view=rev
Log:
- Implement locking for Cc flush (the one used in NT5.2 results in a hang, might be because of a misused PagingIoResource).
- If an acquire/release operation is not implemented, FSD must return STATUS_INVALID_DEVICE_REQUEST, not some other error code.
- Fix a typo in the debug message.

Modified:
    trunk/reactos/drivers/filesystems/fastfat/create.c
    trunk/reactos/drivers/filesystems/fastfat/fastio.c

Modified: trunk/reactos/drivers/filesystems/fastfat/create.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat...
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat/create.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat/create.c [iso-8859-1] Sun Oct 12 04:34:29 2008
@@ -198,7 +198,7 @@

DPRINT ("FindFile(Parent %p, FileToFind '%wZ', DirIndex: %d)\n",
    	Parent, FileToFindU, DirContext->DirIndex);
-	DPRINT ("FindFile: Path %wZ)\n",&Parent->PathNameU);
+	DPRINT ("FindFile: Path %wZ\n",&Parent->PathNameU);

PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR);
    PathNameBuffer = ExAllocatePoolWithTag(NonPagedPool, PathNameBufferLength + sizeof(WCHAR), TAG_VFAT);

Modified: trunk/reactos/drivers/filesystems/fastfat/fastio.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat...
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat/fastio.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat/fastio.c [iso-8859-1] Sun Oct 12 04:34:29 2008
@@ -175,7 +175,7 @@
    				   IN PDEVICE_OBJECT DeviceObject)
 {
    DPRINT("VfatAcquireForModWrite\n");
-   return STATUS_UNSUCCESSFUL;
+   return STATUS_INVALID_DEVICE_REQUEST;
 }

static BOOLEAN NTAPI
@@ -296,16 +296,34 @@
 VfatAcquireForCcFlush(IN PFILE_OBJECT FileObject,
    				  IN PDEVICE_OBJECT DeviceObject)
 {
+   PVFATFCB Fcb = (PVFATFCB)FileObject->FsContext;
+
    DPRINT("VfatAcquireForCcFlush\n");
-   return STATUS_INVALID_DEVICE_REQUEST;
+
+   /* Make sure it is not a volume lock */
+   ASSERT(!(Fcb->Flags & FCB_IS_VOLUME));
+
+   /* Acquire the resource */
+   ExAcquireResourceExclusiveLite(&(Fcb->MainResource), TRUE);
+
+   return STATUS_SUCCESS;
 }

static NTSTATUS NTAPI
 VfatReleaseForCcFlush(IN PFILE_OBJECT FileObject,
    				  IN PDEVICE_OBJECT DeviceObject)
 {
+   PVFATFCB Fcb = (PVFATFCB)FileObject->FsContext;
+
    DPRINT("VfatReleaseForCcFlush\n");
-   return STATUS_INVALID_DEVICE_REQUEST;
+
+   /* Make sure it is not a volume lock */
+   ASSERT(!(Fcb->Flags & FCB_IS_VOLUME));
+
+   /* Release the resource */
+   ExReleaseResourceLite(&(Fcb->MainResource));
+
+   return STATUS_SUCCESS;
 }

BOOLEAN NTAPI
@@ -378,7 +396,6 @@
    FastIoDispatch->ReleaseFileForNtCreateSection = VfatReleaseFileForNtCreateSection;
    FastIoDispatch->FastIoDetachDevice = VfatFastIoDetachDevice;
    FastIoDispatch->FastIoQueryNetworkOpenInfo = VfatFastIoQueryNetworkOpenInfo;
-   FastIoDispatch->AcquireForModWrite = VfatAcquireForModWrite;
    FastIoDispatch->MdlRead = VfatMdlRead;
    FastIoDispatch->MdlReadComplete = VfatMdlReadComplete;
    FastIoDispatch->PrepareMdlWrite = VfatPrepareMdlWrite;
@@ -388,6 +405,7 @@
    FastIoDispatch->MdlReadCompleteCompressed = VfatMdlReadCompleteCompressed;
    FastIoDispatch->MdlWriteCompleteCompressed = VfatMdlWriteCompleteCompressed;
    FastIoDispatch->FastIoQueryOpen = VfatFastIoQueryOpen;
+   FastIoDispatch->AcquireForModWrite = VfatAcquireForModWrite;
    FastIoDispatch->ReleaseForModWrite = VfatReleaseForModWrite;
    FastIoDispatch->AcquireForCcFlush = VfatAcquireForCcFlush;
    FastIoDispatch->ReleaseForCcFlush = VfatReleaseForCcFlush;