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:             drivers/filesystems/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(PCDFS_IRP_CONTEXT IrpContext,
  39                 PFILE_OBJECT FileObject)
  40                 /*
  41                 * FUNCTION: Cleans up after a file has been closed.
  42                 */
  43 {
  44     PDEVICE_EXTENSION DeviceExt;
  45     PFCB Fcb;
  46
  47     DPRINT("CdfsCleanupFile(IrpContext %p, FileObject %p)\n",
  48         IrpContext,
  49         FileObject);
  50
  51     DeviceExt = IrpContext->DeviceObject->DeviceExtension;
  52     Fcb = FileObject->FsContext;
  53     if (!Fcb)
  54     {
  55         return STATUS_SUCCESS;
  56     }
  57
  58     /* Notify about the cleanup */
  59     FsRtlNotifyCleanup(DeviceExt->NotifySync,
  60                        &(DeviceExt->NotifyList),
  61                        FileObject->FsContext2);
  62
  63    if (!CdfsFCBIsDirectory(Fcb) &&
  64        FsRtlAreThereCurrentFileLocks(&Fcb->FileLock))
  65     {
  66         FsRtlFastUnlockAll(&Fcb->FileLock,
  67                            FileObject,
  68                            IoGetRequestorProcess(IrpContext->Irp),
  69                            NULL);
  70     }
  71
  72     /* Uninitialize file cache if initialized for this file object. */
  73     if (FileObject->SectionObjectPointer && FileObject->SectionObjectPointer->SharedCacheMap)
  74     {
  75         CcUninitializeCacheMap (FileObject, NULL, NULL);
  76     }
  77
  78     return STATUS_SUCCESS;
  79 }
  80
  81 NTSTATUS NTAPI
  82 CdfsCleanup(
  83     PCDFS_IRP_CONTEXT IrpContext)
  84 {
  85     PIRP Irp;
  86     PDEVICE_OBJECT DeviceObject;
  87     PDEVICE_EXTENSION DeviceExtension;
  88     PIO_STACK_LOCATION Stack;
  89     PFILE_OBJECT FileObject;
  90     NTSTATUS Status;
  91
  92     DPRINT("CdfsCleanup() called\n");
  93
  94     ASSERT(IrpContext);
  95
  96     Irp = IrpContext->Irp;
  97     DeviceObject = IrpContext->DeviceObject;
  98     Stack = IrpContext->Stack;
  99
 100     if (DeviceObject == CdfsGlobalData->DeviceObject)
 101     {
 102         DPRINT("Closing file system\n");
 103         Status = STATUS_SUCCESS;
 104         goto ByeBye;
 105     }
 106
 107     FileObject = Stack->FileObject;
 108     DeviceExtension = DeviceObject->DeviceExtension;
 109
 110     KeEnterCriticalRegion();
 111     ExAcquireResourceExclusiveLite(&DeviceExtension->DirResource, TRUE);
 112
 113     Status = CdfsCleanupFile(IrpContext, FileObject);
 114
 115     ExReleaseResourceLite(&DeviceExtension->DirResource);
 116     KeLeaveCriticalRegion();
 117
 118 ByeBye:
 119     Irp->IoStatus.Information = 0;
 120
 121     return(Status);
 122 }
 123
 124 /* EOF */