[pschweitzer] 67500: [CDFS] No, FastIo is not possible!

Author: pschweitzer
Date: Fri May  1 17:45:16 2015
New Revision: 67500

URL: http://svn.reactos.org/svn/reactos?rev=67500&view=rev
Log:
[CDFS]
No, FastIo is not possible!

Modified:
    trunk/reactos/drivers/filesystems/cdfs/cdfs.c
    trunk/reactos/drivers/filesystems/cdfs/cdfs.h

Modified: trunk/reactos/drivers/filesystems/cdfs/cdfs.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/cdfs/cd...
==============================================================================
--- trunk/reactos/drivers/filesystems/cdfs/cdfs.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/cdfs/cdfs.c	[iso-8859-1] Fri May  1 17:45:16 2015
@@ -100,6 +100,7 @@
         CdfsDeviceControl;

CdfsGlobalData->FastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
+    CdfsGlobalData->FastIoDispatch.FastIoCheckIfPossible = CdfsFastIoCheckIfPossible;
     CdfsGlobalData->FastIoDispatch.FastIoRead = CdfsFastIoRead;
     CdfsGlobalData->FastIoDispatch.FastIoWrite = CdfsFastIoWrite;
     DriverObject->FastIoDispatch = &CdfsGlobalData->FastIoDispatch;
@@ -145,6 +146,30 @@
     DPRINT("CdfsReleaseFromLazyWrite(): Fcb %p\n", Fcb);

ExReleaseResourceLite(&(Fcb->MainResource));
+}
+
+BOOLEAN
+NTAPI
+CdfsFastIoCheckIfPossible(
+    _In_ PFILE_OBJECT FileObject,
+    _In_ PLARGE_INTEGER FileOffset,
+    _In_ ULONG Length,
+    _In_ BOOLEAN Wait,
+    _In_ ULONG LockKey,
+    _In_ BOOLEAN CheckForReadOperation,
+    _Out_ PIO_STATUS_BLOCK IoStatus,
+    _In_ PDEVICE_OBJECT DeviceObject)
+{
+    /* Deny FastIo */
+    UNREFERENCED_PARAMETER(FileObject);
+    UNREFERENCED_PARAMETER(FileOffset);
+    UNREFERENCED_PARAMETER(Length);
+    UNREFERENCED_PARAMETER(Wait);
+    UNREFERENCED_PARAMETER(LockKey);
+    UNREFERENCED_PARAMETER(CheckForReadOperation);
+    UNREFERENCED_PARAMETER(IoStatus);
+    UNREFERENCED_PARAMETER(DeviceObject);
+    return FALSE;
 }

BOOLEAN

Modified: trunk/reactos/drivers/filesystems/cdfs/cdfs.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/cdfs/cd...
==============================================================================
--- trunk/reactos/drivers/filesystems/cdfs/cdfs.h	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/cdfs/cdfs.h	[iso-8859-1] Fri May  1 17:45:16 2015
@@ -481,6 +481,7 @@
 VOID NTAPI
 CdfsReleaseFromLazyWrite(IN PVOID Context);

+FAST_IO_CHECK_IF_POSSIBLE CdfsFastIoCheckIfPossible;
 FAST_IO_READ CdfsFastIoRead;
 FAST_IO_WRITE CdfsFastIoWrite;