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     PFCB Fcb;
  45
  46     DPRINT("CdfsCleanupFile(DeviceExt %p, FileObject %p)\n",
  47         DeviceExt,
  48         FileObject);
  49
  50     Fcb = FileObject->FsContext;
  51     if (!Fcb)
  52     {
  53         return STATUS_SUCCESS;
  54     }
  55
  56     /* Notify about the cleanup */
  57     FsRtlNotifyCleanup(DeviceExt->NotifySync,
  58                        &(DeviceExt->NotifyList),
  59                        FileObject->FsContext2);
  60
  61     /* Uninitialize file cache if initialized for this file object. */
  62     if (FileObject->SectionObjectPointer && FileObject->SectionObjectPointer->SharedCacheMap)
  63     {
  64         CcUninitializeCacheMap (FileObject, NULL, NULL);
  65     }
  66
  67     return STATUS_SUCCESS;
  68 }
  69
  70 NTSTATUS NTAPI
  71 CdfsCleanup(
  72     PCDFS_IRP_CONTEXT IrpContext)
  73 {
  74     PIRP Irp;
  75     PDEVICE_OBJECT DeviceObject;
  76     PDEVICE_EXTENSION DeviceExtension;
  77     PIO_STACK_LOCATION Stack;
  78     PFILE_OBJECT FileObject;
  79     NTSTATUS Status;
  80
  81     DPRINT("CdfsCleanup() called\n");
  82
  83     ASSERT(IrpContext);
  84
  85     Irp = IrpContext->Irp;
  86     DeviceObject = IrpContext->DeviceObject;
  87     Stack = IrpContext->Stack;
  88
  89     if (DeviceObject == CdfsGlobalData->DeviceObject)
  90     {
  91         DPRINT("Closing file system\n");
  92         Status = STATUS_SUCCESS;
  93         goto ByeBye;
  94     }
  95
  96     FileObject = Stack->FileObject;
  97     DeviceExtension = DeviceObject->DeviceExtension;
  98
  99     KeEnterCriticalRegion();
 100     ExAcquireResourceExclusiveLite(&DeviceExtension->DirResource, TRUE);
 101
 102     Status = CdfsCleanupFile(DeviceExtension, FileObject);
 103
 104     ExReleaseResourceLite(&DeviceExtension->DirResource);
 105     KeLeaveCriticalRegion();
 106
 107 ByeBye:
 108     Irp->IoStatus.Information = 0;
 109
 110     return(Status);
 111 }
 112
 113 /* EOF */