89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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lowio.h
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Abstract:
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This module defines all of the structures and prototypes for Low IO.
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Author:
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Revision History:
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--*/
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#ifndef _RXLOWIO_
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#define _RXLOWIO_
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#include "mrx.h" // mini redirector related definitions ....
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#ifndef WIN9X
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extern FAST_MUTEX RxLowIoPagingIoSyncMutex;
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#endif
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#define RxLowIoIsMdlLocked(MDL) ( \
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RxMdlIsLocked((MDL)) || RxMdlSourceIsNonPaged((MDL)) \
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)
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#define RxLowIoIsBufferLocked(LOWIOCONTEXT) \
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( ((LOWIOCONTEXT)->Operation > LOWIO_OP_WRITE ) || \
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((LOWIOCONTEXT)->ParamsFor.ReadWrite.Buffer == NULL) || \
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( \
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((LOWIOCONTEXT)->ParamsFor.ReadWrite.Buffer != NULL) && \
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RxLowIoIsMdlLocked(((LOWIOCONTEXT)->ParamsFor.ReadWrite.Buffer)) \
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) \
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)
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typedef struct _LOWIO_PER_FCB_INFO {
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LIST_ENTRY PagingIoReadsOutstanding;
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LIST_ENTRY PagingIoWritesOutstanding;
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} LOWIO_PER_FCB_INFO, *PLOWIO_PER_FCB_INFO;
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PVOID
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NTAPI
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RxLowIoGetBufferAddress (
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IN PRX_CONTEXT RxContext
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);
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NTSTATUS
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NTAPI
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RxLowIoPopulateFsctlInfo (
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IN PRX_CONTEXT RxContext,
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IN PIRP Irp
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);
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NTSTATUS
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NTAPI
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RxLowIoSubmit (
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IN PRX_CONTEXT RxContext,
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IN PIRP Irp,
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IN PFCB Fcb,
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IN PLOWIO_COMPLETION_ROUTINE CompletionRoutine
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);
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NTSTATUS
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NTAPI
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RxLowIoCompletion (
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PRX_CONTEXT RxContext
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);
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VOID
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NTAPI
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RxInitializeLowIoContext (
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IN PRX_CONTEXT RxContext,
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IN ULONG Operation,
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OUT PLOWIO_CONTEXT LowIoContext
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);
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VOID
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RxInitializeLowIoPerFcbInfo (
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PLOWIO_PER_FCB_INFO LowIoPerFcbInfo
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);
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#endif // _RXLOWIO_
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