235 lines
3.5 KiB
C
235 lines
3.5 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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ResrcSup.c
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Abstract:
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This module implements the NamedPipe Resource acquisition routines
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Author:
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Gary Kimura [GaryKi] 22-Mar-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_RESRCSUP)
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, NpAcquireExclusiveCcb)
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#pragma alloc_text(PAGE, NpAcquireExclusiveVcb)
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#pragma alloc_text(PAGE, NpAcquireSharedCcb)
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#pragma alloc_text(PAGE, NpAcquireSharedVcb)
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#pragma alloc_text(PAGE, NpReleaseCcb)
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#pragma alloc_text(PAGE, NpReleaseVcb)
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#endif
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VOID
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NpAcquireExclusiveVcb (
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)
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/*++
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Routine Description:
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This routine acquires exclusive access to the Vcb
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Arguments:
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Return Value:
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None.
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--*/
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{
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PAGED_CODE();
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DebugTrace(+1, Dbg, "NpAcquireExclusiveVcb\n", 0);
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ExAcquireResourceExclusive( &(NpVcb->Resource), TRUE );
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DebugTrace(-1, Dbg, "NpAcquireExclusiveVcb -> (VOID)\n", 0);
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return;
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}
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VOID
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NpAcquireSharedVcb (
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)
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/*++
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Routine Description:
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This routine acquires shared access to the Vcb
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Arguments:
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Return Value:
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None.
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--*/
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{
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PAGED_CODE();
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DebugTrace(+1, Dbg, "NpAcquireSharedVcb\n", 0);
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ExAcquireResourceShared( &(NpVcb->Resource), TRUE );
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DebugTrace(-1, Dbg, "NpAcquireSharedVcb -> (VOID)\n", 0);
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return;
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}
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VOID
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NpAcquireExclusiveCcb (
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IN PNONPAGED_CCB NonpagedCcb
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)
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/*++
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Routine Description:
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This routine acquires exclusive access to the Ccb by first getting
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shared access to the Fcb.
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Arguments:
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NonpagedCcb - Supplies the Ccb to acquire
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Return Value:
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None.
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--*/
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{
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PAGED_CODE();
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DebugTrace(+1, Dbg, "NpAcquireExclusiveCcb, NonpagedCcb = %08lx\n", NonpagedCcb);
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(VOID)ExAcquireResourceShared( &(NpVcb->Resource), TRUE );
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(VOID)ExAcquireResourceExclusive( &(NonpagedCcb->Resource), TRUE );
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DebugTrace(-1, Dbg, "NpAcquireExclusiveCcb -> (VOID)\n", 0);
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return;
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}
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VOID
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NpAcquireSharedCcb (
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IN PNONPAGED_CCB NonpagedCcb
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)
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/*++
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Routine Description:
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This routine acquires shared access to the Ccb by first getting
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shared access to the Fcb.
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Arguments:
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NonpagedCcb - Supplies the Ccb to acquire
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Return Value:
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None.
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--*/
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{
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PAGED_CODE();
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DebugTrace(+1, Dbg, "NpAcquireSharedCcb, NonpagedCcb = %08lx\n", NonpagedCcb);
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(VOID)ExAcquireResourceShared( &(NpVcb->Resource), TRUE );
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(VOID)ExAcquireResourceShared( &(NonpagedCcb->Resource), TRUE );
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DebugTrace(-1, Dbg, "NpAcquireSharedCcb -> (VOID)\n", 0);
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return;
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}
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VOID
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NpReleaseVcb (
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)
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/*++
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Routine Description:
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This routine releases access to the Vcb
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Arguments:
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Return Value:
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None.
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--*/
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{
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PAGED_CODE();
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DebugTrace(0, Dbg, "NpReleaseVcb\n", 0);
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ExReleaseResource( &(NpVcb->Resource) );
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return;
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}
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VOID
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NpReleaseCcb (
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IN PNONPAGED_CCB NonpagedCcb
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)
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/*++
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Routine Description:
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This routine releases access to the Ccb
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Arguments:
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Ccb - Supplies the Ccb being released
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Return Value:
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None.
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--*/
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{
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PAGED_CODE();
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DebugTrace(0, Dbg, "NpReleaseCcb, NonpagedCcb = %08lx\n", NonpagedCcb);
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ExReleaseResource( &(NonpagedCcb->Resource) );
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ExReleaseResource( &(NpVcb->Resource) );
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return;
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}
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