reactos/drivers/fs/vfat/close.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:        See COPYING in the top level directory
   4  * PROJECT:          ReactOS kernel
   5  * FILE:             drivers/fs/vfat/close.c
   6  * PURPOSE:          VFAT Filesystem
   7  * PROGRAMMER:       Jason Filby (jasonfilby@yahoo.com)
   8  *                   Hartmut Birr
   9  */
  10
  11 /* INCLUDES *****************************************************************/
  12
  13 #include <ddk/ntddk.h>
  14
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 #include "vfat.h"
  19
  20 /* FUNCTIONS ****************************************************************/
  21
  22 NTSTATUS
  23 VfatCloseFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject)
  24 /*
  25  * FUNCTION: Closes a file
  26  */
  27 {
  28   PVFATFCB pFcb;
  29   PVFATCCB pCcb;
  30   NTSTATUS Status = STATUS_SUCCESS;
  31
  32   DPRINT ("VfatCloseFile(DeviceExt %x, FileObject %x)\n",
  33           DeviceExt, FileObject);
  34
  35   /* FIXME : update entry in directory? */
  36   pCcb = (PVFATCCB) (FileObject->FsContext2);
  37   pFcb = (PVFATFCB) (FileObject->FsContext);
  38
  39   if (pFcb == NULL)
  40   {
  41      return STATUS_SUCCESS;
  42   }
  43
  44   if (pFcb->Flags & FCB_IS_VOLUME)
  45   {
  46      DPRINT1("Volume\n");
  47      pFcb->RefCount--;
  48      FileObject->FsContext2 = NULL;
  49   }
  50   else if (FileObject->FileName.Buffer)
  51   {
  52     // This a FO, that was created outside from FSD.
  53     // Some FO's are created with IoCreateStreamFileObject() insid from FSD.
  54     // This FO's haven't a FileName.
  55     if (FileObject->DeletePending)
  56     {
  57       if (pFcb->Flags & FCB_DELETE_PENDING)
  58       {
  59         VfatDelEntry (DeviceExt, pFcb);
  60       }
  61       else
  62       {
  63         Status = STATUS_DELETE_PENDING;
  64       }
  65     }
  66     vfatReleaseFCB (DeviceExt, pFcb);
  67   }
  68
  69   FileObject->FsContext2 = NULL;
  70   FileObject->FsContext = NULL;
  71   FileObject->SectionObjectPointer = NULL;
  72
  73   if (pCcb)
  74   {
  75     vfatDestroyCCB(pCcb);
  76   }
  77
  78   return  Status;
  79 }
  80
  81 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext)
  82 /*
  83  * FUNCTION: Closes a file
  84  */
  85 {
  86   NTSTATUS Status;
  87
  88   DPRINT ("VfatClose(DeviceObject %x, Irp %x)\n", IrpContext->DeviceObject, IrpContext->Irp);
  89
  90   if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
  91     {
  92       DPRINT("Closing file system\n");
  93       Status = STATUS_SUCCESS;
  94       goto ByeBye;
  95     }
  96 #if 0
  97   /* There occurs a dead look at the call to CcRosDeleteFileCache/ObDereferenceObject/VfatClose
  98      in CmLazyCloseThreadMain if VfatClose is execute asynchronous in a worker thread. */
  99   if (!ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, IrpContext->Flags & IRPCONTEXT_CANWAIT))
 100 #else
 101   if (!ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, TRUE))
 102 #endif
 103   {
 104      return VfatQueueRequest (IrpContext);
 105   }
 106
 107   Status = VfatCloseFile (IrpContext->DeviceExt, IrpContext->FileObject);
 108   ExReleaseResourceLite (&IrpContext->DeviceExt->DirResource);
 109
 110 ByeBye:
 111   IrpContext->Irp->IoStatus.Status = Status;
 112   IrpContext->Irp->IoStatus.Information = 0;
 113   IoCompleteRequest (IrpContext->Irp, IO_NO_INCREMENT);
 114   VfatFreeIrpContext(IrpContext);
 115
 116   return (Status);
 117 }
 118
 119 /* EOF */