reactos/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 (BooleanFlagOn(pFcb->Flags, FCB_IS_VOLUME))
  43     {
  44         DPRINT("Volume\n");
  45         FileObject->FsContext2 = NULL;
  46     }
  47     else
  48     {
  49         vfatReleaseFCB(DeviceExt, pFcb);
  50     }
  51
  52     FileObject->FsContext2 = NULL;
  53     FileObject->FsContext = NULL;
  54     FileObject->SectionObjectPointer = NULL;
  55     DeviceExt->OpenHandleCount--;
  56
  57     if (pCcb)
  58     {
  59         vfatDestroyCCB(pCcb);
  60     }
  61
  62 #ifdef ENABLE_SWAPOUT
  63     if (DeviceExt->OpenHandleCount == 0)
  64     {
  65         VfatCheckForDismount(DeviceExt, FALSE);
  66     }
  67 #endif
  68
  69     return Status;
  70 }
  71
  72 /*
  73  * FUNCTION: Closes a file
  74  */
  75 NTSTATUS
  76 VfatClose(
  77     PVFAT_IRP_CONTEXT IrpContext)
  78 {
  79     NTSTATUS Status;
  80
  81     DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
  82
  83     if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
  84     {
  85         DPRINT("Closing file system\n");
  86         IrpContext->Irp->IoStatus.Information = 0;
  87         return STATUS_SUCCESS;
  88     }
  89     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
  90     {
  91         return VfatMarkIrpContextForQueue(IrpContext);
  92     }
  93
  94     Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
  95     ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
  96
  97     IrpContext->Irp->IoStatus.Information = 0;
  98
  99     return Status;
 100 }
 101
 102 /* EOF */