reactos/drivers/filesystems/fastfat/close.c
Pierre Schweitzer a837694518
[FASTFAT] Uninit directory cache on last handle close.
CORE-14629
CORE-14557
2018-05-18 14:51:24 +02:00

120 lines
2.9 KiB
C

/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: drivers/filesystems/fastfat/close.c
* PURPOSE: VFAT Filesystem
* PROGRAMMER: Jason Filby (jasonfilby@yahoo.com)
*/
/* INCLUDES *****************************************************************/
#include "vfat.h"
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ****************************************************************/
/*
* FUNCTION: Closes a file
*/
NTSTATUS
VfatCloseFile(
PDEVICE_EXTENSION DeviceExt,
PFILE_OBJECT FileObject)
{
PVFATFCB pFcb;
PVFATCCB pCcb;
BOOLEAN IsVolume;
NTSTATUS Status = STATUS_SUCCESS;
DPRINT("VfatCloseFile(DeviceExt %p, FileObject %p)\n",
DeviceExt, FileObject);
/* FIXME : update entry in directory? */
pCcb = (PVFATCCB) (FileObject->FsContext2);
pFcb = (PVFATFCB) (FileObject->FsContext);
if (pFcb == NULL)
{
return STATUS_SUCCESS;
}
IsVolume = BooleanFlagOn(pFcb->Flags, FCB_IS_VOLUME);
if (IsVolume)
{
DPRINT("Volume\n");
FileObject->FsContext2 = NULL;
}
else
{
if (pFcb->OpenHandleCount == 0 && BooleanFlagOn(pFcb->Flags, FCB_CACHE_INITIALIZED))
{
PFILE_OBJECT tmpFileObject;
tmpFileObject = pFcb->FileObject;
if (tmpFileObject != NULL)
{
pFcb->FileObject = NULL;
CcUninitializeCacheMap(tmpFileObject, NULL, NULL);
ClearFlag(pFcb->Flags, FCB_CACHE_INITIALIZED);
ObDereferenceObject(tmpFileObject);
}
}
#ifdef KDBG
pFcb->Flags |= FCB_CLOSED;
#endif
vfatReleaseFCB(DeviceExt, pFcb);
}
FileObject->FsContext2 = NULL;
FileObject->FsContext = NULL;
FileObject->SectionObjectPointer = NULL;
if (pCcb)
{
vfatDestroyCCB(pCcb);
}
#ifdef ENABLE_SWAPOUT
if (IsVolume && DeviceExt->OpenHandleCount == 0)
{
VfatCheckForDismount(DeviceExt, FALSE);
}
#endif
return Status;
}
/*
* FUNCTION: Closes a file
*/
NTSTATUS
VfatClose(
PVFAT_IRP_CONTEXT IrpContext)
{
NTSTATUS Status;
DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
{
DPRINT("Closing file system\n");
IrpContext->Irp->IoStatus.Information = 0;
return STATUS_SUCCESS;
}
if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
{
return VfatMarkIrpContextForQueue(IrpContext);
}
Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
IrpContext->Irp->IoStatus.Information = 0;
return Status;
}
/* EOF */