230 lines
4.3 KiB
C
230 lines
4.3 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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Cleanup.c
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Abstract:
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This module implements the File Cleanup routine for NPFS called by the
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dispatch driver.
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Author:
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Gary Kimura [GaryKi] 21-Aug-1990
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Revision History:
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--*/
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#include "NpProcs.h"
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//
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// The debug trace level
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//
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#define Dbg (DEBUG_TRACE_CLEANUP)
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//
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// local procedure prototypes
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//
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NTSTATUS
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NpCommonCleanup (
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IN PNPFS_DEVICE_OBJECT NpfsDeviceObject,
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IN PIRP Irp
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, NpCommonCleanup)
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#pragma alloc_text(PAGE, NpFsdCleanup)
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#endif
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NTSTATUS
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NpFsdCleanup (
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IN PNPFS_DEVICE_OBJECT NpfsDeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine implements the FSD part of the NtCleanupFile API calls.
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Arguments:
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NpfsDeviceObject - Supplies the device object to use.
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Irp - Supplies the Irp being processed
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Return Value:
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NTSTATUS - The Fsd status for the Irp
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--*/
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{
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NTSTATUS Status;
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PAGED_CODE();
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DebugTrace(+1, Dbg, "NpFsdCleanup\n", 0);
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//
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// Call the common Cleanup routine.
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//
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FsRtlEnterFileSystem();
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try {
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Status = NpCommonCleanup( NpfsDeviceObject, Irp );
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} except(NpExceptionFilter( GetExceptionCode() )) {
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//
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// We had some trouble trying to perform the requested
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// operation, so we'll abort the I/O request with
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// the error status that we get back from the
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// execption code
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//
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Status = NpProcessException( NpfsDeviceObject, Irp, GetExceptionCode() );
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}
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FsRtlExitFileSystem();
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//
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// And return to our caller
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//
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DebugTrace(-1, Dbg, "NpFsdCleanup -> %08lx\n", Status );
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return Status;
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}
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//
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// Internal support routine
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//
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NTSTATUS
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NpCommonCleanup (
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IN PNPFS_DEVICE_OBJECT NpfsDeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This is the common routine for cleanup
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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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NTSTATUS - the return status for the operation
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--*/
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{
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NTSTATUS Status;
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PIO_STACK_LOCATION IrpSp;
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NODE_TYPE_CODE NodeTypeCode;
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PCCB Ccb;
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NAMED_PIPE_END NamedPipeEnd;
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PAGED_CODE();
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//
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// Get the current stack location
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//
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IrpSp = IoGetCurrentIrpStackLocation( Irp );
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DebugTrace(+1, Dbg, "NpCommonCleanup...\n", 0);
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DebugTrace( 0, Dbg, "Irp = %08lx\n", Irp);
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//
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// Now acquire exclusive access to the Vcb
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//
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NpAcquireExclusiveVcb();
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try {
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//
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// Decode the file object to figure out who we are. If the result
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// is null then the pipe has been disconnected.
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//
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if ((NodeTypeCode = NpDecodeFileObject( IrpSp->FileObject,
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NULL,
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&Ccb,
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&NamedPipeEnd )) == NTC_UNDEFINED) {
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DebugTrace(0, Dbg, "Pipe is disconnected from us\n", 0);
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NpCompleteRequest( Irp, STATUS_PIPE_DISCONNECTED );
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try_return( Status = STATUS_PIPE_DISCONNECTED );
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}
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//
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// Now case on the type of file object we're closing
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//
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switch (NodeTypeCode) {
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case NPFS_NTC_VCB:
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case NPFS_NTC_ROOT_DCB:
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NpCompleteRequest( Irp, STATUS_SUCCESS );
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Status = STATUS_SUCCESS;
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break;
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case NPFS_NTC_CCB:
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//
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// If this is the server end of a pipe, decrement the count
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// of the number of instances the server end has open.
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// When this count is 0, attempts to connect to the pipe
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// return OBJECT_NAME_NOT_FOUND instead of
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// PIPE_NOT_AVAILABLE.
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//
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if ( NamedPipeEnd == FILE_PIPE_SERVER_END ) {
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ASSERT( Ccb->Fcb->ServerOpenCount != 0 );
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Ccb->Fcb->ServerOpenCount -= 1;
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}
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//
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// The set closing state routines does everything to transition
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// the named pipe to a closing state.
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//
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Status = NpSetClosingPipeState( Ccb, Irp, NamedPipeEnd );
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break;
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}
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try_exit: NOTHING;
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} finally {
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NpReleaseVcb( );
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}
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DebugTrace(-1, Dbg, "NpCommonCleanup -> %08lx\n", Status);
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return Status;
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}
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