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[AFD]: Fix read data corruption when peeking at network data (TDI_RECEIVE_PEEK is specified for a stream socket)

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svn path=/trunk/; revision=48403
This commit is contained in:
Cameron Gutman 2010-08-01 23:42:33 +00:00
parent be40e4a043
commit e98fc993d1
1 changed files with 3 additions and 2 deletions
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5
reactos/drivers/network/afd/afd/read.c
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@ -80,7 +80,7 @@ static VOID RefillSocketBuffer( PAFD_FCB FCB ) {
static NTSTATUS TryToSatisfyRecvRequestFromBuffer( PAFD_FCB FCB, static NTSTATUS TryToSatisfyRecvRequestFromBuffer( PAFD_FCB FCB,
PAFD_RECV_INFO RecvReq, PAFD_RECV_INFO RecvReq,
PUINT TotalBytesCopied ) { PUINT TotalBytesCopied ) {
UINT i, BytesToCopy = 0, UINT i, BytesToCopy = 0, FcbBytesCopied = FCB->Recv.BytesUsed;
BytesAvailable = BytesAvailable =
FCB->Recv.Content - FCB->Recv.BytesUsed; FCB->Recv.Content - FCB->Recv.BytesUsed;
PAFD_MAPBUF Map; PAFD_MAPBUF Map;
@ -115,12 +115,13 @@ static NTSTATUS TryToSatisfyRecvRequestFromBuffer( PAFD_FCB FCB,
BytesToCopy)); BytesToCopy));
RtlCopyMemory( Map[i].BufferAddress, RtlCopyMemory( Map[i].BufferAddress,
FCB->Recv.Window + FCB->Recv.BytesUsed, FCB->Recv.Window + FcbBytesCopied,
BytesToCopy ); BytesToCopy );
MmUnmapLockedPages( Map[i].BufferAddress, Map[i].Mdl ); MmUnmapLockedPages( Map[i].BufferAddress, Map[i].Mdl );
*TotalBytesCopied += BytesToCopy; *TotalBytesCopied += BytesToCopy;
FcbBytesCopied += BytesToCopy;
if (!(RecvReq->TdiFlags & TDI_RECEIVE_PEEK)) { if (!(RecvReq->TdiFlags & TDI_RECEIVE_PEEK)) {
FCB->Recv.BytesUsed += BytesToCopy; FCB->Recv.BytesUsed += BytesToCopy;