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00001 /*
00002  * COPYRIGHT:        See COPYING in the top level directory
00003  * PROJECT:          ReactOS kernel
00004  * FILE:             drivers/fs/vfat/shutdown.c
00005  * PURPOSE:          VFAT Filesystem
00006  * PROGRAMMER:       Eric Kohl
00007  */
00008 
00009 /* INCLUDES *****************************************************************/
00010 
00011 #define NDEBUG
00012 #include "vfat.h"
00013 
00014 /* FUNCTIONS ****************************************************************/
00015 
00016 static NTSTATUS
00017 VfatDiskShutDown(PVCB Vcb)
00018 {
00019    PIRP Irp;
00020    KEVENT Event;
00021    NTSTATUS Status;
00022    IO_STATUS_BLOCK IoStatus;
00023 
00024    KeInitializeEvent(&Event, NotificationEvent, FALSE);
00025    Irp = IoBuildSynchronousFsdRequest(IRP_MJ_SHUTDOWN, Vcb->StorageDevice,
00026                                       NULL, 0, NULL, &Event, &IoStatus);
00027    if (Irp)
00028    {
00029       Status = IoCallDriver(Vcb->StorageDevice, Irp);
00030       if (Status == STATUS_PENDING)
00031       {
00032          KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
00033          Status = IoStatus.Status;
00034       }
00035    }
00036    else
00037    {
00038       Status = IoStatus.Status;
00039    }
00040 
00041    return Status;
00042 }
00043 
00044 NTSTATUS NTAPI
00045 VfatShutdown(PDEVICE_OBJECT DeviceObject, PIRP Irp)
00046 {
00047    NTSTATUS Status;
00048    PLIST_ENTRY ListEntry;
00049    PDEVICE_EXTENSION DeviceExt;
00050    ULONG eocMark;
00051 
00052    DPRINT("VfatShutdown(DeviceObject %p, Irp %p)\n",DeviceObject, Irp);
00053 
00054    FsRtlEnterFileSystem();
00055 
00056    /* FIXME: block new mount requests */
00057 
00058    if (DeviceObject == VfatGlobalData->DeviceObject)
00059    {
00060       Irp->IoStatus.Status = STATUS_SUCCESS;
00061       ExAcquireResourceExclusiveLite(&VfatGlobalData->VolumeListLock, TRUE);
00062       ListEntry = VfatGlobalData->VolumeListHead.Flink;
00063       while (ListEntry != &VfatGlobalData->VolumeListHead)
00064       {
00065          DeviceExt = CONTAINING_RECORD(ListEntry, VCB, VolumeListEntry);
00066          ListEntry = ListEntry->Flink;
00067 
00068      ExAcquireResourceExclusiveLite(&DeviceExt->DirResource, TRUE);
00069          if (DeviceExt->VolumeFcb->Flags & VCB_CLEAR_DIRTY)
00070          {
00071             /* set clean shutdown bit */
00072             Status = GetNextCluster(DeviceExt, 1, &eocMark);
00073             if (NT_SUCCESS(Status))
00074             {
00075                eocMark |= DeviceExt->CleanShutBitMask;
00076                if (NT_SUCCESS(WriteCluster(DeviceExt, 1, eocMark)))
00077                   DeviceExt->VolumeFcb->Flags &= ~VCB_IS_DIRTY;
00078             }
00079          }
00080          Status = VfatFlushVolume(DeviceExt, DeviceExt->VolumeFcb);
00081          if (NT_SUCCESS(Status))
00082          {
00083             Status = VfatDiskShutDown(DeviceExt);
00084             if (!NT_SUCCESS(Status))
00085            DPRINT1("VfatDiskShutDown failed, status = %x\n", Status);
00086          }
00087          else
00088          {
00089         DPRINT1("VfatFlushVolume failed, status = %x\n", Status);
00090      }
00091          ExReleaseResourceLite(&DeviceExt->DirResource);
00092 
00093          /* FIXME: Unmount the logical volume */
00094 
00095          if (!NT_SUCCESS(Status))
00096             Irp->IoStatus.Status = Status;
00097       }
00098       ExReleaseResourceLite(&VfatGlobalData->VolumeListLock);
00099 
00100       /* FIXME: Free all global acquired resources */
00101 
00102       Status = Irp->IoStatus.Status;
00103    }
00104    else
00105    {
00106       Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
00107       Status = STATUS_INVALID_DEVICE_REQUEST;
00108    }
00109 
00110    Irp->IoStatus.Information = 0;
00111    IoCompleteRequest(Irp, IO_NO_INCREMENT);
00112 
00113    FsRtlExitFileSystem();
00114 
00115    return(Status);
00116 }
00117 
00118 /* EOF */
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