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     BOOLEAN IsVolume;
  29     NTSTATUS Status = STATUS_SUCCESS;
  30
  31     DPRINT("VfatCloseFile(DeviceExt %p, FileObject %p)\n",
  32             DeviceExt, FileObject);
  33
  34     /* FIXME : update entry in directory? */
  35     pCcb = (PVFATCCB) (FileObject->FsContext2);
  36     pFcb = (PVFATFCB) (FileObject->FsContext);
  37
  38     if (pFcb == NULL)
  39     {
  40         return STATUS_SUCCESS;
  41     }
  42
  43     IsVolume = BooleanFlagOn(pFcb->Flags, FCB_IS_VOLUME);
  44     if (IsVolume)
  45     {
  46         DPRINT("Volume\n");
  47         FileObject->FsContext2 = NULL;
  48     }
  49     else
  50     {
  51         if (pFcb->OpenHandleCount == 0 && BooleanFlagOn(pFcb->Flags, FCB_CACHE_INITIALIZED))
  52         {
  53             PFILE_OBJECT tmpFileObject;
  54             tmpFileObject = pFcb->FileObject;
  55             if (tmpFileObject != NULL)
  56             {
  57                 pFcb->FileObject = NULL;
  58                 CcUninitializeCacheMap(tmpFileObject, NULL, NULL);
  59                 ClearFlag(pFcb->Flags, FCB_CACHE_INITIALIZED);
  60                 ObDereferenceObject(tmpFileObject);
  61             }
  62         }
  63
  64 #ifdef KDBG
  65         pFcb->Flags |= FCB_CLOSED;
  66 #endif
  67         vfatReleaseFCB(DeviceExt, pFcb);
  68     }
  69
  70     FileObject->FsContext2 = NULL;
  71     FileObject->FsContext = NULL;
  72     FileObject->SectionObjectPointer = NULL;
  73
  74     if (pCcb)
  75     {
  76         vfatDestroyCCB(pCcb);
  77     }
  78
  79 #ifdef ENABLE_SWAPOUT
  80     if (IsVolume && DeviceExt->OpenHandleCount == 0)
  81     {
  82         VfatCheckForDismount(DeviceExt, FALSE);
  83     }
  84 #endif
  85
  86     return Status;
  87 }
  88
  89 /*
  90  * FUNCTION: Closes a file
  91  */
  92 NTSTATUS
  93 VfatClose(
  94     PVFAT_IRP_CONTEXT IrpContext)
  95 {
  96     NTSTATUS Status;
  97
  98     DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
  99
 100     if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
 101     {
 102         DPRINT("Closing file system\n");
 103         IrpContext->Irp->IoStatus.Information = 0;
 104         return STATUS_SUCCESS;
 105     }
 106     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
 107     {
 108         return VfatMarkIrpContextForQueue(IrpContext);
 109     }
 110
 111     Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
 112     ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
 113
 114     IrpContext->Irp->IoStatus.Information = 0;
 115
 116     return Status;
 117 }
 118
 119 /* EOF */