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             else
  57             {
  58                 Status = STATUS_DELETE_PENDING;
  59             }
  60         }
  61
  62         vfatReleaseFCB(DeviceExt, pFcb);
  63     }
  64
  65     FileObject->FsContext2 = NULL;
  66     FileObject->FsContext = NULL;
  67     FileObject->SectionObjectPointer = NULL;
  68
  69     if (pCcb)
  70     {
  71         vfatDestroyCCB(pCcb);
  72     }
  73
  74     return Status;
  75 }
  76
  77 /*
  78  * FUNCTION: Closes a file
  79  */
  80 NTSTATUS
  81 VfatClose(
  82     PVFAT_IRP_CONTEXT IrpContext)
  83 {
  84     NTSTATUS Status;
  85
  86     DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
  87
  88     if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
  89     {
  90         DPRINT("Closing file system\n");
  91         Status = STATUS_SUCCESS;
  92         goto ByeBye;
  93     }
  94 #if 0
  95     /* There occurs a dead look at the call to CcRosDeleteFileCache/ObDereferenceObject/VfatClose
  96        in CmLazyCloseThreadMain if VfatClose is execute asynchronous in a worker thread. */
  97     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, IrpContext->Flags & IRPCONTEXT_CANWAIT))
  98 #else
  99     if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, TRUE))
 100 #endif
 101     {
 102         return VfatQueueRequest(IrpContext);
 103     }
 104
 105     Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
 106     ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
 107
 108 ByeBye:
 109     IrpContext->Irp->IoStatus.Status = Status;
 110     IrpContext->Irp->IoStatus.Information = 0;
 111     IoCompleteRequest(IrpContext->Irp, IO_NO_INCREMENT);
 112     VfatFreeIrpContext(IrpContext);
 113
 114     return Status;
 115 }
 116
 117 /* EOF */