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Added updating of FileObject->CurrentByteOffset in VfatRead()/VfatWrite.

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svn path=/trunk/; revision=2152
This commit is contained in:
Hartmut Birr 2001-08-04 11:02:47 +00:00
parent b4a4e5c0be
commit 34b4c8f40b
1 changed files with 24 additions and 9 deletions
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33
reactos/drivers/fs/vfat/rw.c
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@ -1,5 +1,5 @@
/* $Id: rw.c,v 1.25 2001/07/20 08:00:20 ekohl Exp $
/* $Id: rw.c,v 1.26 2001/08/04 11:02:47 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -369,7 +369,7 @@ VfatReadFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
assert (FileObject != NULL);
assert (FileObject->FsContext != NULL);
DPRINT("VfatReadFile(DeviceExt %x, FileObject %x, Buffer %x, "
DPRINT1("VfatReadFile(DeviceExt %x, FileObject %x, Buffer %x, "
"Length %d, ReadOffset 0x%x)\n", DeviceExt, FileObject, Buffer,
Length, ReadOffset);
@ -416,7 +416,7 @@ VfatReadFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
/*
* Find the cluster to start the read from
* FIXME: Optimize by remembering the last cluster read and using if
* FIXME: Optimize by remembering the last cluster read and using if
* possible.
*/
Status = OffsetToCluster(DeviceExt,
@ -786,7 +786,7 @@ VfatWriteFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
NTSTATUS Status;
BOOLEAN Extend;
DPRINT ("VfatWriteFile(FileObject %x, Buffer %x, Length %x, "
DPRINT1 ("VfatWriteFile(FileObject %x, Buffer %x, Length %x, "
"WriteOffset %x\n", FileObject, Buffer, Length, WriteOffset);
/* Locate the first cluster of the file */
@ -941,8 +941,8 @@ VfatWrite (PDEVICE_OBJECT DeviceObject, PIRP Irp)
PVOID Buffer;
ULONG Offset;
PIO_STACK_LOCATION Stack = IoGetCurrentIrpStackLocation (Irp);
PFILE_OBJECT FileObject = Stack->FileObject;
PDEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
PFILE_OBJECT FileObject = Stack->FileObject;
PDEVICE_EXTENSION DeviceExt = DeviceObject->DeviceExtension;
NTSTATUS Status;
ULONG NoCache;
@ -962,8 +962,16 @@ VfatWrite (PDEVICE_OBJECT DeviceObject, PIRP Irp)
NoCache = FALSE;
}
Status = VfatWriteFile (DeviceExt, FileObject, Buffer, Length, Offset,
NoCache);
Status = VfatWriteFile (DeviceExt, FileObject, Buffer, Length, Offset,
NoCache);
if (FileObject->Flags & FO_SYNCHRONOUS_IO
&& !(Irp->Flags & IRP_PAGING_IO)
&& NT_SUCCESS(Status))
{
FileObject->CurrentByteOffset.QuadPart = Offset + Length;
}
Irp->IoStatus.Status = Status;
Irp->IoStatus.Information = Length;
@ -1003,7 +1011,7 @@ VfatRead (PDEVICE_OBJECT DeviceObject, PIRP Irp)
Length = Stack->Parameters.Read.Length;
Buffer = MmGetSystemAddressForMdl (Irp->MdlAddress);
Offset = Stack->Parameters.Read.ByteOffset.u.LowPart;
if (Irp->Flags & IRP_PAGING_IO ||
FileObject->Flags & FO_NO_INTERMEDIATE_BUFFERING)
{
@ -1027,6 +1035,13 @@ VfatRead (PDEVICE_OBJECT DeviceObject, PIRP Irp)
NoCache);
}
if (FileObject->Flags & FO_SYNCHRONOUS_IO
&& !(Irp->Flags & IRP_PAGING_IO)
&& NT_SUCCESS(Status))
{
FileObject->CurrentByteOffset.QuadPart = Offset + LengthRead;
}
Irp->IoStatus.Status = Status;
Irp->IoStatus.Information = LengthRead;
IoCompleteRequest (Irp, IO_NO_INCREMENT);