mirror of
https://github.com/reactos/reactos.git
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132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/fs/vfat/shutdown.c
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* PURPOSE: VFAT Filesystem
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* PROGRAMMER: Eric Kohl
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*/
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/* INCLUDES *****************************************************************/
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#include "vfat.h"
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ****************************************************************/
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static
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NTSTATUS
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VfatDiskShutDown(
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PVCB Vcb)
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{
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PIRP Irp;
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KEVENT Event;
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NTSTATUS Status;
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IO_STATUS_BLOCK IoStatus;
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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Irp = IoBuildSynchronousFsdRequest(IRP_MJ_SHUTDOWN, Vcb->StorageDevice,
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NULL, 0, NULL, &Event, &IoStatus);
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if (Irp)
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{
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Status = IoCallDriver(Vcb->StorageDevice, Irp);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
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Status = IoStatus.Status;
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}
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}
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else
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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}
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return Status;
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}
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NTSTATUS
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NTAPI
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VfatShutdown(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp)
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{
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NTSTATUS Status;
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PLIST_ENTRY ListEntry;
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PDEVICE_EXTENSION DeviceExt;
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DPRINT("VfatShutdown(DeviceObject %p, Irp %p)\n",DeviceObject, Irp);
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FsRtlEnterFileSystem();
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/* FIXME: block new mount requests */
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VfatGlobalData->ShutdownStarted = TRUE;
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if (DeviceObject == VfatGlobalData->DeviceObject)
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{
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Irp->IoStatus.Status = STATUS_SUCCESS;
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ExAcquireResourceExclusiveLite(&VfatGlobalData->VolumeListLock, TRUE);
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ListEntry = VfatGlobalData->VolumeListHead.Flink;
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while (ListEntry != &VfatGlobalData->VolumeListHead)
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{
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DeviceExt = CONTAINING_RECORD(ListEntry, VCB, VolumeListEntry);
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ListEntry = ListEntry->Flink;
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ExAcquireResourceExclusiveLite(&DeviceExt->DirResource, TRUE);
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/* Flush volume & files */
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Status = VfatFlushVolume(DeviceExt, DeviceExt->VolumeFcb);
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/* We're performing a clean shutdown */
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if (BooleanFlagOn(DeviceExt->VolumeFcb->Flags, VCB_CLEAR_DIRTY) &&
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BooleanFlagOn(DeviceExt->VolumeFcb->Flags, VCB_IS_DIRTY))
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{
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/* Drop the dirty bit */
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if (NT_SUCCESS(SetDirtyStatus(DeviceExt, FALSE)))
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DeviceExt->VolumeFcb->Flags &= ~VCB_IS_DIRTY;
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}
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if (NT_SUCCESS(Status))
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{
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Status = VfatDiskShutDown(DeviceExt);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("VfatDiskShutDown failed, status = %x\n", Status);
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}
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}
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else
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{
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DPRINT1("VfatFlushVolume failed, status = %x\n", Status);
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}
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ExReleaseResourceLite(&DeviceExt->DirResource);
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/* Unmount the logical volume */
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#ifdef ENABLE_SWAPOUT
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VfatCheckForDismount(DeviceExt, FALSE);
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#endif
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if (!NT_SUCCESS(Status))
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Irp->IoStatus.Status = Status;
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}
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ExReleaseResourceLite(&VfatGlobalData->VolumeListLock);
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/* FIXME: Free all global acquired resources */
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Status = Irp->IoStatus.Status;
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}
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else
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{
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Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
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Status = STATUS_INVALID_DEVICE_REQUEST;
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}
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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FsRtlExitFileSystem();
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return Status;
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}
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/* EOF */
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