drivers/filesystems/fastfat/close.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * FILE:             drivers/fs/vfat/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         DPRINT1("Volume\n");
  45         pFcb->RefCount--;
  46         FileObject->FsContext2 = NULL;
  47     }
  48     else
  49     {
  50         if (FileObject->DeletePending)
  51         {
  52             if (pFcb->Flags & FCB_DELETE_PENDING)
  53             {
  54                 VfatDelEntry(DeviceExt, pFcb);
  55
  56                 FsRtlNotifyFullReportChange(DeviceExt->NotifySync,
  57                                             &(DeviceExt->NotifyList),
  58                                             (PSTRING)&pFcb->PathNameU,
  59                                             pFcb->PathNameU.Length - pFcb->LongNameU.Length,
  60                                             NULL,
  61                                             NULL,
  62                                             ((*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY) ?
  63                                             FILE_NOTIFY_CHANGE_DIR_NAME : FILE_NOTIFY_CHANGE_FILE_NAME),
  64                                             FILE_ACTION_REMOVED,
  65                                             NULL);
  66             }
  67             else
  68             {
  69                 Status = STATUS_DELETE_PENDING;
  70             }
  71         }
  72
  73         vfatReleaseFCB(DeviceExt, pFcb);
  74     }
  75
  76     FileObject->FsContext2 = NULL;
  77     FileObject->FsContext = NULL;
  78     FileObject->SectionObjectPointer = NULL;
  79
  80     if (pCcb)
  81     {
  82         vfatDestroyCCB(pCcb);
  83     }
  84
  85     return Status;
  86 }
  87
  88 /*
  89  * FUNCTION: Closes a file
  90  */
  91 NTSTATUS
  92 VfatClose(
  93     PVFAT_IRP_CONTEXT IrpContext)
  94 {
  95     NTSTATUS Status;
  96
  97     DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
  98
  99     if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
 100     {
 101         DPRINT("Closing file system\n");
 102         Status = STATUS_SUCCESS;
 103         goto ByeBye;
 104     }
 105 #if 0
 106     /* There occurs a dead look at the call to CcRosDeleteFileCache/ObDereferenceObject/VfatClose
 107        in CmLazyCloseThreadMain if VfatClose is execute asynchronous in a worker thread. */
 108     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, IrpContext->Flags & IRPCONTEXT_CANWAIT))
 109 #else
 110     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, TRUE))
 111 #endif
 112     {
 113         return VfatQueueRequest(IrpContext);
 114     }
 115
 116     Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
 117     ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
 118
 119 ByeBye:
 120     IrpContext->Irp->IoStatus.Status = Status;
 121     IrpContext->Irp->IoStatus.Information = 0;
 122     IoCompleteRequest(IrpContext->Irp, IO_NO_INCREMENT);
 123     VfatFreeIrpContext(IrpContext);
 124
 125     return Status;
 126 }
 127
 128 /* EOF */