You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
163 lines
3.4 KiB
163 lines
3.4 KiB
/*++
|
|
|
|
Copyright (c) 1989 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
Flush.c
|
|
|
|
Abstract:
|
|
|
|
This module implements the File Flush buffers routine for Rx called by the
|
|
dispatch driver.
|
|
|
|
In a future version of the wrapper, it may be that flush will be routed thru lowio.
|
|
|
|
Author:
|
|
|
|
Joe Linn [JoeLinn] 15-dec-1994
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
#pragma hdrstop
|
|
|
|
//
|
|
// The local debug trace level
|
|
//
|
|
|
|
#define Dbg (DEBUG_TRACE_FLUSH)
|
|
|
|
#ifdef ALLOC_PRAGMA
|
|
#pragma alloc_text(PAGE, RxCommonFlushBuffers)
|
|
#endif
|
|
|
|
|
|
|
|
NTSTATUS
|
|
RxCommonFlushBuffers (
|
|
IN PRX_CONTEXT RxContext,
|
|
IN PIRP Irp
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is the common routine for flushing file buffers.
|
|
|
|
Arguments:
|
|
|
|
Irp - Supplies the Irp to process
|
|
|
|
Return Value:
|
|
|
|
RXSTATUS - The return status for the operation
|
|
|
|
--*/
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
|
|
PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation( Irp );
|
|
|
|
PFCB Fcb;
|
|
PFOBX Fobx;
|
|
|
|
NODE_TYPE_CODE TypeOfOpen;
|
|
|
|
PLOWIO_CONTEXT LowIoContext = &RxContext->LowIoContext;
|
|
|
|
BOOLEAN FcbAcquired = FALSE;
|
|
|
|
PAGED_CODE();
|
|
|
|
TypeOfOpen = RxDecodeFileObject( IrpSp->FileObject, &Fcb, &Fobx );
|
|
|
|
RxDbgTrace( +1, Dbg, ("RxCommonFlush...IrpC %08lx, Fobx %08lx, Fcb %08lx\n",
|
|
RxContext, Fobx, Fcb ));
|
|
RxLog(( "%s %lx %lx %lx\n","slF", RxContext, Fcb, Fobx ));
|
|
RxWmiLog( LOG,
|
|
RxCommonFlushBuffers,
|
|
LOGPTR( RxContext )
|
|
LOGPTR( Fcb )
|
|
LOGPTR( Fobx ) );
|
|
|
|
//
|
|
// CcFlushCache is always synchronous, so if we can't wait enqueue
|
|
// the irp to the Fsp.
|
|
//
|
|
|
|
if (!FlagOn( RxContext->Flags, RX_CONTEXT_FLAG_WAIT )) {
|
|
|
|
Status = RxFsdPostRequest( RxContext );
|
|
|
|
RxDbgTrace( -1, Dbg, ("RxCommonFlushBuffers -> %08lx\n", Status ));
|
|
return Status;
|
|
}
|
|
|
|
Status = STATUS_SUCCESS;
|
|
|
|
try {
|
|
|
|
//
|
|
// Case on the type of open that we are trying to flush
|
|
//
|
|
|
|
switch (TypeOfOpen) {
|
|
|
|
case RDBSS_NTC_STORAGE_TYPE_FILE:
|
|
|
|
RxDbgTrace( 0, Dbg, ("Flush User File Open\n", 0) );
|
|
|
|
Status = RxAcquireExclusiveFcb( RxContext, Fcb );
|
|
|
|
if (Status != STATUS_SUCCESS) break;
|
|
|
|
FcbAcquired = TRUE;
|
|
|
|
//
|
|
// If the file is cached then flush its cache
|
|
//
|
|
|
|
Status = RxFlushFcbInSystemCache( Fcb, TRUE );
|
|
|
|
if (!NT_SUCCESS( Status )) break;
|
|
|
|
MINIRDR_CALL( Status, RxContext, Fcb->MRxDispatch, MRxFlush, (RxContext) );
|
|
break;
|
|
|
|
case RDBSS_NTC_SPOOLFILE:
|
|
|
|
RxDbgTrace(0, Dbg, ("Flush Sppol File\n", 0));
|
|
|
|
Status = RxAcquireExclusiveFcb( RxContext, Fcb );
|
|
|
|
if (Status != STATUS_SUCCESS) break;
|
|
|
|
FcbAcquired = TRUE;
|
|
|
|
MINIRDR_CALL( Status, RxContext, Fcb->MRxDispatch, MRxFlush, (RxContext) );
|
|
break;
|
|
|
|
default:
|
|
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
}
|
|
|
|
|
|
} finally {
|
|
|
|
DebugUnwind( RxCommonFlushBuffers );
|
|
|
|
if (FcbAcquired) {
|
|
RxReleaseFcb( RxContext, Fcb );
|
|
}
|
|
}
|
|
|
|
RxDbgTrace(-1, Dbg, ("RxCommonFlushBuffers -> %08lx\n", Status));
|
|
return Status;
|
|
}
|
|
|