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- Fix a stupid bug that prevented writing to pipes from working.

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svn path=/trunk/; revision=9075
This commit is contained in:
Filip Navara 2004-04-10 16:20:59 +00:00
parent cc1629adc6
commit 30ed90f0b3
1 changed files with 24 additions and 4 deletions
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28
reactos/drivers/fs/np/rw.c
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@ -1,4 +1,4 @@
/* $Id: rw.c,v 1.10 2003/11/17 02:12:49 hyperion Exp $
/* $Id: rw.c,v 1.11 2004/04/10 16:20:59 navaraf Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -76,8 +76,6 @@ NpfsRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Information = 0;
Buffer = MmGetSystemAddressForMdl(Irp->MdlAddress);
DPRINT("Length %d Buffer %x\n",Length,Buffer);
KeAcquireSpinLock(&ReadFcb->DataListLock, &OldIrql);
while (1)
{
@ -157,6 +155,18 @@ NpfsRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
CopyLength = RtlRosMin(ReadFcb->ReadDataAvailable, Length);
memcpy(Buffer, ReadFcb->Data, CopyLength);
#ifndef NDEBUG
DPRINT("Length %d Buffer %x\n",CopyLength,Buffer);
{
DbgPrint("------\n");
ULONG X;
for (X = 0; X < CopyLength; X++)
DbgPrint("%02x ", ((PUCHAR)Buffer)[X]);
DbgPrint("\n");
DbgPrint("------\n");
}
#endif
Information = CopyLength;
ReadFcb->ReadDataAvailable = 0;
ReadFcb->WriteQuotaAvailable = ReadFcb->MaxDataLength;
@ -237,7 +247,17 @@ NpfsWrite(PDEVICE_OBJECT DeviceObject,
Status = STATUS_SUCCESS;
Buffer = MmGetSystemAddressForMdl (Irp->MdlAddress);
#ifndef NDEBUG
DPRINT("Length %d Buffer %x Offset %x\n",Length,Buffer,Offset);
{
DbgPrint("------\n");
ULONG X;
for (X = 0; X < Length; X++)
DbgPrint("%02x ", Buffer[X]);
DbgPrint("\n");
DbgPrint("------\n");
}
#endif
KeAcquireSpinLock(&Fcb->DataListLock, &OldIrql);
while(1)
@ -303,7 +323,7 @@ NpfsWrite(PDEVICE_OBJECT DeviceObject,
if (Length > 0)
{
CopyLength = RtlRosMin(Length, Fcb->WriteQuotaAvailable);
memcpy(Buffer, Fcb->Data, CopyLength);
memcpy(Fcb->Data, Buffer, CopyLength);
Information = CopyLength;
Fcb->ReadDataAvailable = CopyLength;