reactos/drivers/filesystems/cdfs/cleanup.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 /*
  20  * COPYRIGHT:        See COPYING in the top level directory
  21  * PROJECT:          ReactOS kernel
  22  * FILE:             services/fs/cdfs/cleanup.c
  23  * PURPOSE:          CDROM (ISO 9660) filesystem driver
  24  * PROGRAMMER:
  25  * UPDATE HISTORY:
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #include "cdfs.h"
  31
  32 #define NDEBUG
  33 #include <debug.h>
  34
  35 /* FUNCTIONS ****************************************************************/
  36
  37 static NTSTATUS
  38 CdfsCleanupFile(PDEVICE_EXTENSION DeviceExt,
  39                 PFILE_OBJECT FileObject)
  40                 /*
  41                 * FUNCTION: Cleans up after a file has been closed.
  42                 */
  43 {
  44
  45     DPRINT("CdfsCleanupFile(DeviceExt %p, FileObject %p)\n",
  46         DeviceExt,
  47         FileObject);
  48
  49
  50     /* Uninitialize file cache if initialized for this file object. */
  51     if (FileObject->SectionObjectPointer && FileObject->SectionObjectPointer->SharedCacheMap)
  52     {
  53         CcUninitializeCacheMap (FileObject, NULL, NULL);
  54     }
  55
  56     return STATUS_SUCCESS;
  57 }
  58
  59 NTSTATUS NTAPI
  60 CdfsCleanup(PDEVICE_OBJECT DeviceObject,
  61             PIRP Irp)
  62 {
  63     PDEVICE_EXTENSION DeviceExtension;
  64     PIO_STACK_LOCATION Stack;
  65     PFILE_OBJECT FileObject;
  66     NTSTATUS Status;
  67
  68     DPRINT("CdfsCleanup() called\n");
  69
  70     if (DeviceObject == CdfsGlobalData->DeviceObject)
  71     {
  72         DPRINT("Closing file system\n");
  73         Status = STATUS_SUCCESS;
  74         goto ByeBye;
  75     }
  76
  77     Stack = IoGetCurrentIrpStackLocation(Irp);
  78     FileObject = Stack->FileObject;
  79     DeviceExtension = DeviceObject->DeviceExtension;
  80
  81     KeEnterCriticalRegion();
  82     ExAcquireResourceExclusiveLite(&DeviceExtension->DirResource, TRUE);
  83
  84     Status = CdfsCleanupFile(DeviceExtension, FileObject);
  85
  86     ExReleaseResourceLite(&DeviceExtension->DirResource);
  87     KeLeaveCriticalRegion();
  88
  89
  90 ByeBye:
  91     Irp->IoStatus.Status = Status;
  92     Irp->IoStatus.Information = 0;
  93
  94     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  95     return(Status);
  96 }
  97
  98 /* EOF */
  99