186 lines
4.1 KiB
C
186 lines
4.1 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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Flush.c
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Abstract:
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This module implements the File Flush buffers routine for Rx called by the
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dispatch driver.
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In a future version of the wrapper, it may be that flush will be routed thru lowio.
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Author:
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Joe Linn [JoeLinn] 15-dec-1994
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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//
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// The local debug trace level
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//
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#define Dbg (DEBUG_TRACE_FLUSH)
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, RxCommonFlushBuffers)
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#endif
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NTSTATUS
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RxCommonFlushBuffers ( RXCOMMON_SIGNATURE )
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/*++
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Routine Description:
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This is the common routine for flushing file buffers.
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Arguments:
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Irp - Supplies the Irp to process
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Return Value:
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RXSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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RxCaptureRequestPacket;
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RxCaptureFcb; RxCaptureFobx; RxCaptureParamBlock; RxCaptureFileObject;
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NODE_TYPE_CODE TypeOfOpen = NodeType(capFcb);
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PLOWIO_CONTEXT LowIoContext = &RxContext->LowIoContext;
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BOOLEAN FcbAcquired = FALSE;
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PAGED_CODE();
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RxDbgTrace(+1, Dbg, ("RxCommonFlush...IrpC %08lx, Fobx %08lx, Fcb %08lx\n",
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RxContext, capFobx, capFcb));
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RxLog(("%s %lx %lx %lx\n","slF",RxContext,capFcb,capFobx));
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RxWmiLog(LOG,
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RxCommonFlushBuffers,
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LOGPTR(RxContext)
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LOGPTR(capFcb)
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LOGPTR(capFobx));
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//
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// CcFlushCache is always synchronous, so if we can't wait enqueue
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// the irp to the Fsp.
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if ( !FlagOn(RxContext->Flags, RX_CONTEXT_FLAG_WAIT) ) {
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Status = RxFsdPostRequest( RxContext );
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RxDbgTrace(-1, Dbg, ("RxCommonFlushBuffers -> %08lx\n", Status ));
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return Status;
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}
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Status = STATUS_SUCCESS;
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try {
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//
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// Case on the type of open that we are trying to flush
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//
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switch (TypeOfOpen) {
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case RDBSS_NTC_STORAGE_TYPE_FILE:
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RxDbgTrace(0, Dbg, ("Flush User File Open\n", 0));
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Status = RxAcquireExclusiveFcb( RxContext, capFcb );
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if (Status != STATUS_SUCCESS) break;
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FcbAcquired = TRUE;
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//
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// If the file is cached then flush its cache
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//
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Status = RxFlushFcbInSystemCache(capFcb, TRUE);
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if (!NT_SUCCESS( Status )) break;
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//rdrs don't do this.....only local FSs
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////
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//// Check if we should be changing the time or file size
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//
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//RxAdjustFileTimesAndSize(RXCOMMON_ARGUMENTS);
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// if we make this lowio.........
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////
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//// Initialize LowIO_CONTEXT block in the RxContext and Calldown
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//
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//RxInitializeLowIoContext(LowIoContext,LOWIO_OP_FLUSH);
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//
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//Status = RxLowIoFlushShell(RxContext);
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MINIRDR_CALL(Status,RxContext,capFcb->MRxDispatch,MRxFlush,(RxContext));
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break;
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case RDBSS_NTC_SPOOLFILE:
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RxDbgTrace(0, Dbg, ("Flush Sppol File\n", 0));
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Status = RxAcquireExclusiveFcb( RxContext, capFcb );
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if (Status != STATUS_SUCCESS) break;
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FcbAcquired = TRUE;
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// should this be low io???
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////
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//// Initialize LowIO_CONTEXT block in the RxContext and Calldown
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//
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//RxInitializeLowIoContext(LowIoContext,LOWIO_OP_FLUSH);
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//
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//Status = RxLowIoFlushShell(RxContext);
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MINIRDR_CALL(Status,RxContext,capFcb->MRxDispatch,MRxFlush,(RxContext));
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break;
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default:
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Status = STATUS_INVALID_DEVICE_REQUEST;
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}
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} finally {
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DebugUnwind( RxCommonFlushBuffers );
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if (FcbAcquired) { RxReleaseFcb( RxContext, capFcb ); }
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//
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// If this is a normal termination then pass the request on
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// to the target device object.
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//
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if (!AbnormalTermination()) {
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NOTHING;
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}
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}
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RxDbgTrace(-1, Dbg, ("RxCommonFlushBuffers -> %08lx\n", Status));
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return Status;
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}
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