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00001 /*
00002  * COPYRIGHT:        See COPYING in the top level directory
00003  * PROJECT:          ReactOS kernel
00004  * FILE:             drivers/fs/vfat/close.c
00005  * PURPOSE:          VFAT Filesystem
00006  * PROGRAMMER:       Jason Filby (jasonfilby@yahoo.com)
00007  */
00008 
00009 /* INCLUDES *****************************************************************/
00010 
00011 #define NDEBUG
00012 #include "vfat.h"
00013 
00014 /* FUNCTIONS ****************************************************************/
00015 
00016 NTSTATUS
00017 VfatCloseFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject)
00018 /*
00019  * FUNCTION: Closes a file
00020  */
00021 {
00022   PVFATFCB pFcb;
00023   PVFATCCB pCcb;
00024   NTSTATUS Status = STATUS_SUCCESS;
00025 
00026   DPRINT ("VfatCloseFile(DeviceExt %p, FileObject %p)\n",
00027       DeviceExt, FileObject);
00028 
00029   /* FIXME : update entry in directory? */
00030   pCcb = (PVFATCCB) (FileObject->FsContext2);
00031   pFcb = (PVFATFCB) (FileObject->FsContext);
00032 
00033   if (pFcb == NULL)
00034   {
00035      return STATUS_SUCCESS;
00036   }
00037 
00038   if (pFcb->Flags & FCB_IS_VOLUME)
00039   {
00040      DPRINT1("Volume\n");
00041      pFcb->RefCount--;
00042      FileObject->FsContext2 = NULL;
00043   }
00044   else
00045   {
00046     if (FileObject->DeletePending)
00047     {
00048       if (pFcb->Flags & FCB_DELETE_PENDING)
00049       {
00050         VfatDelEntry (DeviceExt, pFcb);
00051       }
00052       else
00053       {
00054         Status = STATUS_DELETE_PENDING;
00055       }
00056     }
00057     vfatReleaseFCB (DeviceExt, pFcb);
00058   }
00059 
00060   FileObject->FsContext2 = NULL;
00061   FileObject->FsContext = NULL;
00062   FileObject->SectionObjectPointer = NULL;
00063 
00064   if (pCcb)
00065   {
00066     vfatDestroyCCB(pCcb);
00067   }
00068 
00069   return  Status;
00070 }
00071 
00072 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext)
00073 /*
00074  * FUNCTION: Closes a file
00075  */
00076 {
00077   NTSTATUS Status;
00078 
00079   DPRINT ("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
00080 
00081   if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
00082     {
00083       DPRINT("Closing file system\n");
00084       Status = STATUS_SUCCESS;
00085       goto ByeBye;
00086     }
00087 #if 0
00088   /* There occurs a dead look at the call to CcRosDeleteFileCache/ObDereferenceObject/VfatClose
00089      in CmLazyCloseThreadMain if VfatClose is execute asynchronous in a worker thread. */
00090   if (!ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, IrpContext->Flags & IRPCONTEXT_CANWAIT))
00091 #else
00092   if (!ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, TRUE))
00093 #endif
00094   {
00095      return VfatQueueRequest (IrpContext);
00096   }
00097 
00098   Status = VfatCloseFile (IrpContext->DeviceExt, IrpContext->FileObject);
00099   ExReleaseResourceLite (&IrpContext->DeviceExt->DirResource);
00100 
00101 ByeBye:
00102   IrpContext->Irp->IoStatus.Status = Status;
00103   IrpContext->Irp->IoStatus.Information = 0;
00104   IoCompleteRequest (IrpContext->Irp, IO_NO_INCREMENT);
00105   VfatFreeIrpContext(IrpContext);
00106 
00107   return (Status);
00108 }
00109 
00110 /* EOF */
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