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 #define NDEBUG
  12 #include "vfat.h"
  13
  14 /* FUNCTIONS ****************************************************************/
  15
  16 NTSTATUS
  17 VfatCloseFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject)
  18 /*
  19  * FUNCTION: Closes a file
  20  */
  21 {
  22   PVFATFCB pFcb;
  23   PVFATCCB pCcb;
  24   NTSTATUS Status = STATUS_SUCCESS;
  25
  26   DPRINT ("VfatCloseFile(DeviceExt %p, FileObject %p)\n",
  27           DeviceExt, FileObject);
  28
  29   /* FIXME : update entry in directory? */
  30   pCcb = (PVFATCCB) (FileObject->FsContext2);
  31   pFcb = (PVFATFCB) (FileObject->FsContext);
  32
  33   if (pFcb == NULL)
  34   {
  35      return STATUS_SUCCESS;
  36   }
  37
  38   if (pFcb->Flags & FCB_IS_VOLUME)
  39   {
  40      DPRINT1("Volume\n");
  41      pFcb->RefCount--;
  42      FileObject->FsContext2 = NULL;
  43   }
  44   else
  45   {
  46     if (FileObject->DeletePending)
  47     {
  48       if (pFcb->Flags & FCB_DELETE_PENDING)
  49       {
  50         VfatDelEntry (DeviceExt, pFcb);
  51       }
  52       else
  53       {
  54         Status = STATUS_DELETE_PENDING;
  55       }
  56     }
  57     vfatReleaseFCB (DeviceExt, pFcb);
  58   }
  59
  60   FileObject->FsContext2 = NULL;
  61   FileObject->FsContext = NULL;
  62   FileObject->SectionObjectPointer = NULL;
  63
  64   if (pCcb)
  65   {
  66     vfatDestroyCCB(pCcb);
  67   }
  68
  69   return  Status;
  70 }
  71
  72 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext)
  73 /*
  74  * FUNCTION: Closes a file
  75  */
  76 {
  77   NTSTATUS Status;
  78
  79   DPRINT ("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
  80
  81   if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
  82     {
  83       DPRINT("Closing file system\n");
  84       Status = STATUS_SUCCESS;
  85       goto ByeBye;
  86     }
  87 #if 0
  88   /* There occurs a dead look at the call to CcRosDeleteFileCache/ObDereferenceObject/VfatClose
  89      in CmLazyCloseThreadMain if VfatClose is execute asynchronous in a worker thread. */
  90   if (!ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, IrpContext->Flags & IRPCONTEXT_CANWAIT))
  91 #else
  92   if (!ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, TRUE))
  93 #endif
  94   {
  95      return VfatQueueRequest (IrpContext);
  96   }
  97
  98   Status = VfatCloseFile (IrpContext->DeviceExt, IrpContext->FileObject);
  99   ExReleaseResourceLite (&IrpContext->DeviceExt->DirResource);
 100
 101 ByeBye:
 102   IrpContext->Irp->IoStatus.Status = Status;
 103   IrpContext->Irp->IoStatus.Information = 0;
 104   IoCompleteRequest (IrpContext->Irp, IO_NO_INCREMENT);
 105   VfatFreeIrpContext(IrpContext);
 106
 107   return (Status);
 108 }
 109
 110 /* EOF */