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 /* $Id$
  20 *
  21 * COPYRIGHT:        See COPYING in the top level directory
  22 * PROJECT:          ReactOS kernel
  23 * FILE:             services/fs/cdfs/cleanup.c
  24 * PURPOSE:          CDROM (ISO 9660) filesystem driver
  25 * PROGRAMMER:
  26 * UPDATE HISTORY:
  27 */
  28
  29 /* INCLUDES *****************************************************************/
  30
  31 #include "cdfs.h"
  32
  33 #define NDEBUG
  34 #include <debug.h>
  35
  36 /* FUNCTIONS ****************************************************************/
  37
  38 static NTSTATUS
  39 CdfsCleanupFile(PDEVICE_EXTENSION DeviceExt,
  40                 PFILE_OBJECT FileObject)
  41                 /*
  42                 * FUNCTION: Cleans up after a file has been closed.
  43                 */
  44 {
  45
  46     DPRINT("CdfsCleanupFile(DeviceExt %x, FileObject %x)\n",
  47         DeviceExt,
  48         FileObject);
  49
  50
  51     /* Uninitialize file cache if initialized for this file object. */
  52     if (FileObject->SectionObjectPointer && FileObject->SectionObjectPointer->SharedCacheMap)
  53     {
  54         CcUninitializeCacheMap (FileObject, NULL, NULL);
  55     }
  56
  57     return STATUS_SUCCESS;
  58 }
  59
  60 NTSTATUS NTAPI
  61 CdfsCleanup(PDEVICE_OBJECT DeviceObject,
  62             PIRP Irp)
  63 {
  64     PDEVICE_EXTENSION DeviceExtension;
  65     PIO_STACK_LOCATION Stack;
  66     PFILE_OBJECT FileObject;
  67     NTSTATUS Status;
  68
  69     DPRINT("CdfsCleanup() called\n");
  70
  71     if (DeviceObject == CdfsGlobalData->DeviceObject)
  72     {
  73         DPRINT("Closing file system\n");
  74         Status = STATUS_SUCCESS;
  75         goto ByeBye;
  76     }
  77
  78     Stack = IoGetCurrentIrpStackLocation(Irp);
  79     FileObject = Stack->FileObject;
  80     DeviceExtension = DeviceObject->DeviceExtension;
  81
  82     KeEnterCriticalRegion();
  83     ExAcquireResourceExclusiveLite(&DeviceExtension->DirResource, TRUE);
  84
  85     Status = CdfsCleanupFile(DeviceExtension, FileObject);
  86
  87     ExReleaseResourceLite(&DeviceExtension->DirResource);
  88     KeLeaveCriticalRegion();
  89
  90
  91 ByeBye:
  92     Irp->IoStatus.Status = Status;
  93     Irp->IoStatus.Information = 0;
  94
  95     IoCompleteRequest(Irp, IO_NO_INCREMENT);
  96     return(Status);
  97 }
  98
  99 /* EOF */
 100