probeandlock.c File Reference

#include <ntddk.h>
#include <pseh/pseh2.h>

Include dependency graph for probeandlock.c:

Go to the source code of this file.

Functions
NTSTATUS	FxProbeAndLockForRead (__in PMDL Mdl, __in KPROCESSOR_MODE AccessMode)
NTSTATUS	FxProbeAndLockForWrite (__in PMDL Mdl, __in KPROCESSOR_MODE AccessMode)
NTSTATUS	FxProbeAndLockWithAccess (__in PMDL Mdl, __in KPROCESSOR_MODE AccessMode, __in LOCK_OPERATION Operation)

Function Documentation

FxProbeAndLockForRead()

NTSTATUS FxProbeAndLockForRead	(	__in PMDL	Mdl,
		__in KPROCESSOR_MODE	AccessMode
	)

Definition at line 36 of file probeandlock.c.

{
    _SEH2_TRY
    {
        MmProbeAndLockPages(Mdl, AccessMode, IoReadAccess);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    return STATUS_SUCCESS;
}

Referenced by FxRequest::ProbeAndLockForRead().

FxProbeAndLockForWrite()

NTSTATUS FxProbeAndLockForWrite	(	__in PMDL	Mdl,
		__in KPROCESSOR_MODE	AccessMode
	)

Definition at line 55 of file probeandlock.c.

{
    _SEH2_TRY
    {
        MmProbeAndLockPages(Mdl, AccessMode, IoWriteAccess);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    return STATUS_SUCCESS;
}

Referenced by FxRequest::ProbeAndLockForWrite().

FxProbeAndLockWithAccess()

NTSTATUS FxProbeAndLockWithAccess	(	__in PMDL	Mdl,
		__in KPROCESSOR_MODE	AccessMode,
		__in LOCK_OPERATION	Operation
	)

Definition at line 74 of file probeandlock.c.

{
    _SEH2_TRY
    {
        MmProbeAndLockPages(Mdl, AccessMode, Operation);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    return STATUS_SUCCESS;
}

Referenced by FxRequestBuffer::GetOrAllocateMdl().