drivers/filesystems/fastfat/close.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * FILE:             drivers/filesystems/fastfat/close.c
   5  * PURPOSE:          VFAT Filesystem
   6  * PROGRAMMER:       Jason Filby (jasonfilby@yahoo.com)
   7  */
   8
   9 /* INCLUDES *****************************************************************/
  10
  11 #include "vfat.h"
  12
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 /* FUNCTIONS ****************************************************************/
  17
  18 /*
  19  * FUNCTION: Closes a file
  20  */
  21 NTSTATUS
  22 VfatCloseFile(
  23     PDEVICE_EXTENSION DeviceExt,
  24     PFILE_OBJECT FileObject)
  25 {
  26     PVFATFCB pFcb;
  27     PVFATCCB pCcb;
  28     NTSTATUS Status = STATUS_SUCCESS;
  29
  30     DPRINT("VfatCloseFile(DeviceExt %p, FileObject %p)\n",
  31             DeviceExt, FileObject);
  32
  33     /* FIXME : update entry in directory? */
  34     pCcb = (PVFATCCB) (FileObject->FsContext2);
  35     pFcb = (PVFATFCB) (FileObject->FsContext);
  36
  37     if (pFcb == NULL)
  38     {
  39         return STATUS_SUCCESS;
  40     }
  41
  42     if (pFcb->Flags & FCB_IS_VOLUME)
  43     {
  44         DPRINT("Volume\n");
  45         FileObject->FsContext2 = NULL;
  46     }
  47     else
  48     {
  49         if (FileObject->DeletePending)
  50         {
  51             if (pFcb->Flags & FCB_DELETE_PENDING)
  52             {
  53                 VfatDelEntry(DeviceExt, pFcb, NULL);
  54
  55                 FsRtlNotifyFullReportChange(DeviceExt->NotifySync,
  56                                             &(DeviceExt->NotifyList),
  57                                             (PSTRING)&pFcb->PathNameU,
  58                                             pFcb->PathNameU.Length - pFcb->LongNameU.Length,
  59                                             NULL,
  60                                             NULL,
  61                                             ((*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY) ?
  62                                             FILE_NOTIFY_CHANGE_DIR_NAME : FILE_NOTIFY_CHANGE_FILE_NAME),
  63                                             FILE_ACTION_REMOVED,
  64                                             NULL);
  65             }
  66             else
  67             {
  68                 Status = STATUS_DELETE_PENDING;
  69             }
  70         }
  71
  72         vfatReleaseFCB(DeviceExt, pFcb);
  73     }
  74
  75     FileObject->FsContext2 = NULL;
  76     FileObject->FsContext = NULL;
  77     FileObject->SectionObjectPointer = NULL;
  78     DeviceExt->OpenHandleCount--;
  79
  80     if (pCcb)
  81     {
  82         vfatDestroyCCB(pCcb);
  83     }
  84
  85     if (DeviceExt->OpenHandleCount == 0)
  86     {
  87         VfatCheckForDismount(DeviceExt, FALSE);
  88     }
  89
  90     return Status;
  91 }
  92
  93 /*
  94  * FUNCTION: Closes a file
  95  */
  96 NTSTATUS
  97 VfatClose(
  98     PVFAT_IRP_CONTEXT IrpContext)
  99 {
 100     NTSTATUS Status;
 101
 102     DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
 103
 104     if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
 105     {
 106         DPRINT("Closing file system\n");
 107         Status = STATUS_SUCCESS;
 108         goto ByeBye;
 109     }
 110 #if 0
 111     /* There occurs a dead look at the call to CcRosDeleteFileCache/ObDereferenceObject/VfatClose
 112        in CmLazyCloseThreadMain if VfatClose is execute asynchronous in a worker thread. */
 113     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, IrpContext->Flags & IRPCONTEXT_CANWAIT))
 114 #else
 115     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, TRUE))
 116 #endif
 117     {
 118         return VfatQueueRequest(IrpContext);
 119     }
 120
 121     Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
 122     ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
 123
 124 ByeBye:
 125     IrpContext->Irp->IoStatus.Status = Status;
 126     IrpContext->Irp->IoStatus.Information = 0;
 127     IoCompleteRequest(IrpContext->Irp, IO_NO_INCREMENT);
 128     VfatFreeIrpContext(IrpContext);
 129
 130     return Status;
 131 }
 132
 133 /* EOF */