mdl.c File Reference

#include <ntoskrnl.h>
#include <debug.h>

Include dependency graph for mdl.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
VOID NTAPI	CcMdlRead (IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN ULONG Length, OUT PMDL *MdlChain, OUT PIO_STATUS_BLOCK IoStatus)
VOID NTAPI	CcMdlReadComplete2 (IN PFILE_OBJECT FileObject, IN PMDL MemoryDescriptorList)
VOID NTAPI	CcMdlReadComplete (IN PFILE_OBJECT FileObject, IN PMDL MdlChain)
VOID NTAPI	CcMdlWriteComplete (IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN PMDL MdlChain)
VOID NTAPI	CcMdlWriteComplete2 (IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN PMDL MdlChain)
VOID NTAPI	CcMdlWriteAbort (IN PFILE_OBJECT FileObject, IN PMDL MdlChain)
VOID NTAPI	CcPrepareMdlWrite (IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN ULONG Length, OUT PMDL *MdlChain, OUT PIO_STATUS_BLOCK IoStatus)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file mdl.c.

Function Documentation

CcMdlRead()

VOID NTAPI CcMdlRead	(	IN PFILE_OBJECT	FileObject,
		IN PLARGE_INTEGER	FileOffset,
		IN ULONG	Length,
		OUT PMDL *	MdlChain,
		OUT PIO_STATUS_BLOCK	IoStatus
	)

Definition at line 23 of file mdl.c.

{
    CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%I64d Length=%lu\n",
        FileObject, FileOffset->QuadPart, Length);

    UNIMPLEMENTED;
}

CcMdlReadComplete()

VOID NTAPI CcMdlReadComplete	(	IN PFILE_OBJECT	FileObject,
		IN PMDL	MdlChain
	)

Definition at line 90 of file mdl.c.

{
    PDEVICE_OBJECT DeviceObject = NULL;
    PFAST_IO_DISPATCH FastDispatch;

    /* Get Fast Dispatch Data */
    DeviceObject = IoGetRelatedDeviceObject(FileObject);
    FastDispatch = DeviceObject->DriverObject->FastIoDispatch;

    /* Check if we support Fast Calls, and check this one */
    if (FastDispatch && FastDispatch->MdlReadComplete)
    {
        /* Use the fast path */
        if (FastDispatch->MdlReadComplete(FileObject,
                                          MdlChain,
                                          DeviceObject))
        {
            /* Request was handled */
            return;
        }
    }

    /* Use slow path */
    CcMdlReadComplete2(FileObject, MdlChain);
}

CcMdlReadComplete2()

VOID NTAPI CcMdlReadComplete2	(	IN PFILE_OBJECT	FileObject,
		IN PMDL	MemoryDescriptorList
	)

Definition at line 56 of file mdl.c.

{
    PMDL Mdl;

    /* Free MDLs */
    while ((Mdl = MemoryDescriptorList))
    {
        MemoryDescriptorList = Mdl->Next;
        MmUnlockPages(Mdl);
        IoFreeMdl(Mdl);
    }
}

Referenced by CcMdlReadComplete().

CcMdlWriteAbort()

VOID NTAPI CcMdlWriteAbort	(	IN PFILE_OBJECT	FileObject,
		IN PMDL	MdlChain
	)

Definition at line 168 of file mdl.c.

{
    UNIMPLEMENTED;
}

CcMdlWriteComplete()

VOID NTAPI CcMdlWriteComplete	(	IN PFILE_OBJECT	FileObject,
		IN PLARGE_INTEGER	FileOffset,
		IN PMDL	MdlChain
	)

Definition at line 123 of file mdl.c.

{
    PDEVICE_OBJECT DeviceObject = NULL;
    PFAST_IO_DISPATCH FastDispatch;

    /* Get Fast Dispatch Data */
    DeviceObject = IoGetRelatedDeviceObject(FileObject);
    FastDispatch = DeviceObject->DriverObject->FastIoDispatch;

    /* Check if we support Fast Calls, and check this one */
    if (FastDispatch && FastDispatch->MdlWriteComplete)
    {
        /* Use the fast path */
        if (FastDispatch->MdlWriteComplete(FileObject,
                                           FileOffset,
                                           MdlChain,
                                           DeviceObject))
        {
            /* Request was handled */
            return;
        }
    }

    /* Use slow path */
    CcMdlWriteComplete2(FileObject,FileOffset, MdlChain);
}

CcMdlWriteComplete2()

VOID NTAPI CcMdlWriteComplete2	(	IN PFILE_OBJECT	FileObject,
		IN PLARGE_INTEGER	FileOffset,
		IN PMDL	MdlChain
	)

Definition at line 155 of file mdl.c.

{
    UNIMPLEMENTED;
}

Referenced by CcMdlWriteComplete().

CcPrepareMdlWrite()

VOID NTAPI CcPrepareMdlWrite	(	IN PFILE_OBJECT	FileObject,
		IN PLARGE_INTEGER	FileOffset,
		IN ULONG	Length,
		OUT PMDL *	MdlChain,
		OUT PIO_STATUS_BLOCK	IoStatus
	)

Definition at line 180 of file mdl.c.

{
    CCTRACE(CC_API_DEBUG, "FileObject=%p FileOffset=%I64d Length=%lu\n",
        FileObject, FileOffset->QuadPart, Length);

    UNIMPLEMENTED;
}