mdlsup.c File Reference

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

Include dependency graph for mdlsup.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
PMDL NTAPI	CcpBuildCacheMdl (PFILE_OBJECT FileObject, PLARGE_INTEGER FileOffset, ULONG Length, PIO_STATUS_BLOCK IOSB)
VOID NTAPI	CcMdlRead (IN PFILE_OBJECT FileObject, IN PLARGE_INTEGER FileOffset, IN ULONG Length, OUT PMDL *MdlChain, OUT PIO_STATUS_BLOCK IoStatus)
VOID NTAPI	CcMdlReadComplete (IN PFILE_OBJECT FileObject, IN PMDL MdlChain)
VOID NTAPI	CcMdlReadComplete2 (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)
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)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file mdlsup.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 64 of file mdlsup.c.

{
    *MdlChain = CcpBuildCacheMdl(FileObject, FileOffset, Length, IoStatus);
}

Referenced by _Requires_lock_held_(), do_read(), Ext2ReadFile(), Ext2ReadVolume(), FsRtlMdlReadDev(), and RxCommonRead().

CcMdlReadComplete()

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

Definition at line 75 of file mdlsup.c.

{
    IoFreeMdl(MdlChain);
}

Referenced by _Dispatch_type_(), CdCompleteMdl(), Ext2ReadComplete(), FatCompleteMdl(), RxCompleteMdl(), and UDFMdlComplete().

CcMdlReadComplete2()

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

Definition at line 83 of file mdlsup.c.

{
    UNIMPLEMENTED
}

Referenced by FsRtlMdlReadCompleteDev().

CcMdlWriteAbort()

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

Definition at line 120 of file mdlsup.c.

{
    ASSERT(FALSE);
    IoFreeMdl(MdlChain);
}

Referenced by _Requires_lock_held_().

CcMdlWriteComplete()

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

Definition at line 102 of file mdlsup.c.

{
    IoFreeMdl(MdlChain);
}

Referenced by _Dispatch_type_(), Ext2WriteComplete(), FatCompleteMdl(), RxCompleteMdl(), and UDFMdlComplete().

CcMdlWriteComplete2()

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

Definition at line 111 of file mdlsup.c.

{
    UNIMPLEMENTED
}

Referenced by FsRtlMdlWriteCompleteDev().

CcpBuildCacheMdl()

PMDL NTAPI CcpBuildCacheMdl	(	PFILE_OBJECT	FileObject,
		PLARGE_INTEGER	FileOffset,
		ULONG	Length,
		PIO_STATUS_BLOCK	IOSB
	)

Definition at line 22 of file mdlsup.c.

{
    PMDL Mdl;
    PVOID Bcb, Buffer;
 
    BOOLEAN Result = CcMapData(FileObject,
                               FileOffset,
                               Length,
                               PIN_WAIT,
                               &Bcb,
                               &Buffer);
 
    if (!Result)
    {
        IOSB->Information = 0;
        IOSB->Status = STATUS_UNSUCCESSFUL;
        return NULL;
    }
 
    IOSB->Information = Length;
    IOSB->Status = STATUS_SUCCESS;
 
    Mdl = IoAllocateMdl(Buffer, Length, FALSE, FALSE, NULL);
 
    if (!Mdl)
    {
        IOSB->Information = 0;
        IOSB->Status = STATUS_NO_MEMORY;
        return NULL;
    }
 
    IOSB->Information = Length;
    IOSB->Status = STATUS_SUCCESS;
 
    return Mdl;
}

Referenced by CcMdlRead(), and CcPrepareMdlWrite().

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 91 of file mdlsup.c.

{
    *MdlChain = CcpBuildCacheMdl(FileObject, FileOffset, Length, IoStatus);
}

Referenced by __attribute__(), _Requires_lock_held_(), Ext2WriteFile(), Ext2WriteVolume(), FsRtlPrepareMdlWriteDev(), and RxCommonWrite().