ea.c

winddk src目录下的文件系统驱动源码压缩!

/*++

Copyright (c) 1989 - 1999 Microsoft Corporation

Module Name:

    ea.c

Abstract:

    This module implements 'extended attributes' on a file handle

--*/

#include "precomp.h"
#pragma hdrstop

//
//  The local debug trace level
//

#define Dbg                              (DEBUG_TRACE_EA)

#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, NulMRxQueryEaInformation)
#endif

//
//  Extended Attributes (EA) functionality
//

NTSTATUS
NulMRxQueryEaInformation (
    IN OUT PRX_CONTEXT RxContext
    )
/*++

Routine Description:

   This routine queries IFS for extended attributes like 
   scatter-gather list and filename for an IFS handle.
   
Arguments:

    RxContext - the RDBSS context

Return Value:

    RXSTATUS - The return status for the operation

Notes:


--*/
{
    NTSTATUS Status = STATUS_SUCCESS;

    RxCaptureFcb;
    RxCaptureFobx;
    RxCaptureParamBlock;

    PMRX_SRV_OPEN pSrvOpen = capFobx->pSrvOpen;
    PFILE_FULL_EA_INFORMATION pEaInfo = (PFILE_FULL_EA_INFORMATION) RxContext->Info.Buffer;
    ULONG BufferLength = RxContext->Info.LengthRemaining;
    ULONG UserEaListLength = RxContext->QueryEa.UserEaListLength;
    PUCHAR UserEaList = RxContext->QueryEa.UserEaList;
    PFILE_GET_EA_INFORMATION pGetEaInfo = (PFILE_GET_EA_INFORMATION) UserEaList;
    NulMRxGetFcbExtension(capFcb,pFcbExtension);
    PMRX_NET_ROOT pNetRoot = capFcb->pNetRoot;
    NulMRxGetNetRootExtension(pNetRoot,pNetRootExtension);

    RxTraceEnter("NulMRxQueryEaInformation");
    PAGED_CODE();

    RxDbgTrace(0, Dbg, ("Ea buffer len remaining is %d\n", RxContext->Info.LengthRemaining));

    RxTraceLeave(Status);
    return(Status);
}

NTSTATUS
NulMRxSetEaInformation (
    IN OUT PRX_CONTEXT  RxContext
    )
/*++

Routine Description:

   This routine sets the EA information for this FCB
   
Arguments:

    RxContext - the RDBSS context

Return Value:

    RXSTATUS - The return status for the operation

Notes:


--*/
{
    PAGED_CODE();

    UNREFERENCED_PARAMETER(RxContext);

    DbgPrint("NulMRxSetEaInformation");
    return STATUS_NOT_IMPLEMENTED;
}