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180 lines
3.9 KiB
C
180 lines
3.9 KiB
C
/*++
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Copyright (c) 1997-2006 Microsoft Corporation
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Module Name:
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Shutdown.c
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Abstract:
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This module implements the shutdown routine for CDFS called by
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the dispatch driver.
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--*/
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#include "cdprocs.h"
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//
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// The Bug check file id for this module
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//
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#define BugCheckFileId (CDFS_BUG_CHECK_SHUTDOWN)
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, CdCommonShutdown)
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#endif
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_Requires_lock_held_(_Global_critical_region_)
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NTSTATUS
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CdCommonShutdown (
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_Inout_ PIRP_CONTEXT IrpContext,
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_Inout_ 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 handling shutdown operation called
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by both the fsd and fsp threads
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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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KEVENT Event;
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PLIST_ENTRY Links;
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PVCB Vcb;
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PIRP NewIrp;
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IO_STATUS_BLOCK Iosb;
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BOOLEAN VcbPresent;
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NTSTATUS Status;
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PAGED_CODE();
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//
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// Make sure we don't get any pop-ups.
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//
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SetFlag( IrpContext->Flags, IRP_CONTEXT_FLAG_DISABLE_POPUPS );
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//
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// Initialize an event for doing calls down to
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// our target device objects.
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//
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KeInitializeEvent( &Event, NotificationEvent, FALSE );
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//
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// Indicate that shutdown has started.
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//
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SetFlag( CdData.Flags, CD_FLAGS_SHUTDOWN );
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//
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// Get everyone else out of the way
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//
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CdAcquireCdData( IrpContext );
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//
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// Now walk through all the mounted Vcb's and shutdown the target
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// device objects.
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//
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Links = CdData.VcbQueue.Flink;
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while (Links != &CdData.VcbQueue) {
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Vcb = CONTAINING_RECORD( Links, VCB, VcbLinks );
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//
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// Move to the next link now since the current Vcb may be deleted.
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//
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Links = Links->Flink;
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//
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// If we have already been called before for this volume
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// (and yes this does happen), skip this volume as no writes
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// have been allowed since the first shutdown.
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//
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if (FlagOn( Vcb->VcbState, VCB_STATE_SHUTDOWN ) ||
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(Vcb->VcbCondition != VcbMounted)) {
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continue;
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}
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CdAcquireVcbExclusive( IrpContext, Vcb, FALSE );
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CdPurgeVolume( IrpContext, Vcb, FALSE );
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//
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// Build an irp for this volume stack - our own irp is probably too small and
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// each stack may have a different stack size.
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//
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NewIrp = IoBuildSynchronousFsdRequest( IRP_MJ_SHUTDOWN,
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Vcb->TargetDeviceObject,
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NULL,
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0,
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NULL,
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&Event,
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&Iosb );
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if (NewIrp != NULL) {
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Status = IoCallDriver( Vcb->TargetDeviceObject, NewIrp );
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if (Status == STATUS_PENDING) {
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(VOID)KeWaitForSingleObject( &Event,
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Executive,
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KernelMode,
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FALSE,
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NULL );
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}
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KeClearEvent( &Event );
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}
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SetFlag( Vcb->VcbState, VCB_STATE_SHUTDOWN );
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//
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// Attempt to punch the volume down.
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//
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VcbPresent = CdCheckForDismount( IrpContext, Vcb, FALSE );
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if (VcbPresent) {
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CdReleaseVcb( IrpContext, Vcb );
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}
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}
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CdReleaseCdData( IrpContext );
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IoUnregisterFileSystem( CdData.FileSystemDeviceObject );
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IoDeleteDevice( CdData.FileSystemDeviceObject );
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#ifdef __REACTOS__
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IoUnregisterFileSystem( CdData.HddFileSystemDeviceObject );
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IoDeleteDevice( CdData.HddFileSystemDeviceObject );
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#endif
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CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
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return STATUS_SUCCESS;
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}
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