[hbirr] 13282: - Allow the second device name RosFat to make it possible to load vfatfs on W2k if fastfat is already loaded.

- Allow the second device name RosFat to make it possible to load vfatfs
on W2k if fastfat is already loaded.
- Moved the initialisation of the callback and fast io functions to
fastio.c.
Modified: trunk/reactos/drivers/fs/vfat/iface.c
Modified: trunk/reactos/drivers/fs/vfat/vfat.h
  _____
Modified: trunk/reactos/drivers/fs/vfat/iface.c
--- trunk/reactos/drivers/fs/vfat/iface.c       2005-01-25 21:11:46 UTC
(rev 13281)
+++ trunk/reactos/drivers/fs/vfat/iface.c       2005-01-25 21:12:52 UTC
(rev 13282)
@@ -49,7 +49,6 @@
 {
    PDEVICE_OBJECT DeviceObject;
    UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Fat");
-   PFAST_IO_DISPATCH pFastIoDispatch;
    NTSTATUS Status;
    Status = IoCreateDevice(DriverObject,
@@ -61,7 +60,23 @@
                           &DeviceObject);
    if (!NT_SUCCESS(Status))
      {
-       return (Status);
+       if (Status == STATUS_OBJECT_NAME_EXISTS ||
+          Status == STATUS_OBJECT_NAME_COLLISION)
+        {
+          /* Try an other name, if 'Fat' is already in use. 'Fat' is
also used by fastfat.sys on W2K */
+          RtlInitUnicodeString(&DeviceName, L"\\RosFat");
+           Status = IoCreateDevice(DriverObject,
+                                  sizeof(VFAT_GLOBAL_DATA),
+                                  &DeviceName,
+                                  FILE_DEVICE_DISK_FILE_SYSTEM,
+                                  0,
+                                  FALSE,
+                                  &DeviceObject);
+          if (!NT_SUCCESS(Status))
+            {
+               return (Status);
+            }
+        }
      }
    VfatGlobalData = DeviceObject->DeviceExtension;
    RtlZeroMemory (VfatGlobalData, sizeof(VFAT_GLOBAL_DATA));
@@ -95,9 +110,8 @@
    VfatGlobalData->CacheMgrCallbacks.ReleaseFromReadAhead =
VfatReleaseFromReadAhead;
    /* Fast I/O */
-   DriverObject->FastIoDispatch = pFastIoDispatch =
&VfatGlobalData->FastIoDispatch;
-   pFastIoDispatch->SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
-   pFastIoDispatch->FastIoCheckIfPossible = VfatFastIoCheckIfPossible;
+   VfatInitFastIoRoutines(&VfatGlobalData->FastIoDispatch);
+   DriverObject->FastIoDispatch = &VfatGlobalData->FastIoDispatch;
    /* Private lists */
    ExInitializeNPagedLookasideList(&VfatGlobalData->FcbLookasideList,
  _____
Modified: trunk/reactos/drivers/fs/vfat/vfat.h
--- trunk/reactos/drivers/fs/vfat/vfat.h        2005-01-25 21:11:46 UTC
(rev 13281)
+++ trunk/reactos/drivers/fs/vfat/vfat.h        2005-01-25 21:12:52 UTC
(rev 13282)
@@ -511,15 +511,8 @@
 /*  ---------------------------------------------------------  fastio.c
*/
-BOOLEAN NTAPI
-VfatFastIoCheckIfPossible(IN PFILE_OBJECT FileObject,
-                          IN PLARGE_INTEGER FileOffset,
-                          IN ULONG Lenght,
-                          IN BOOLEAN Wait,
-                          IN ULONG LockKey,
-                          IN BOOLEAN CheckForReadOperation,
-                          OUT PIO_STATUS_BLOCK IoStatus,
-                          IN PDEVICE_OBJECT DeviceObject);
+VOID
+VfatInitFastIoRoutines(PFAST_IO_DISPATCH FastIoDispatch);
 BOOLEAN NTAPI
 VfatAcquireForLazyWrite(IN PVOID Context,