NTSTATUS
SfPassThrough (
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp
    )
{  
  UNICODE_STRING uu;
  UNICODE_STRING uu3;
  PUNICODE_STRING uu2=&uu;
  PIO_STACK_LOCATION irpSp;
  PSFILTER_DEVICE_EXTENSION devExtS = DeviceObject->DeviceExtension;

    PIRP MiMi;
    PVOID BufferName;
    PIO_STACK_LOCATION MiMiSp;
    KEVENT Ev;
    IO_STATUS_BLOCK io_Block;

  VALIDATE_IRQL(Irp);


  if (IS_MY_CONTROL_DEVICE_OBJECT(DeviceObject)) {
    Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
    Irp->IoStatus.Information = 0;
    IoCompleteRequest( Irp, IO_NO_INCREMENT );
    return STATUS_INVALID_DEVICE_REQUEST;
  }

  irpSp = IoGetCurrentIrpStackLocation( Irp );

 
  if ((irpSp->MajorFunction!=IRP_MJ_SET_INFORMATION) && (irpSp->MajorFunction!=IRP_MJ_WRITE) && (irpSp->MajorFunction!=IRP_MJ_READ)){
    IoSkipCurrentIrpStackLocation( Irp );
    return IoCallDriver( ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject, Irp );
  }


  DbgPrint ("SW11_BETA037\n");

  BufferName = ExAllocatePoolWithTag( NonPagedPool, 2000, SFLT_POOL_TAG);
  if (BufferName == NULL){
    IoSkipCurrentIrpStackLocation( Irp );
    return IoCallDriver( ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject, Irp );
  }

 
  KeInitializeEvent(&Ev, SynchronizationEvent,FALSE);
  MiMi = IoAllocateIrp(((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject->StackSize,FALSE);
  if (MiMi == NULL){
    ExFreePool(BufferName);
    IoSkipCurrentIrpStackLocation( Irp );
    return IoCallDriver( ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject, Irp );
  }


  MiMi->AssociatedIrp.SystemBuffer = BufferName; 
  MiMi->UserEvent = &Ev;
  MiMi->UserIosb = &io_Block;
  MiMi->Tail.Overlay.Thread = PsGetCurrentThread();
  MiMi->Tail.Overlay.OriginalFileObject = irpSp->FileObject;
  MiMi->RequestorMode = KernelMode;
  MiMi->Flags = 0;            

  MiMiSp = IoGetNextIrpStackLocation(MiMi);
  MiMiSp->MajorFunction = IRP_MJ_QUERY_INFORMATION;
  MiMiSp->DeviceObject = ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject;
  MiMiSp->FileObject = irpSp->FileObject;
  MiMiSp->Parameters.QueryFile.Length  = 2000;
  MiMiSp->Parameters.QueryFile.FileInformationClass = FileNameInformation;
  IoSetCompletionRoutine(MiMi, DeleteIrpRoutine, NULL, TRUE, TRUE, TRUE);


  IoCallDriver( ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject, MiMi); 
        
  KeWaitForSingleObject(&Ev,Executive, KernelMode, FALSE, 0);

  DbgPrint ("SW8_BETA038\n");

  if (!NT_SUCCESS(io_Block.Status)){
    ExFreePool(BufferName);
    IoSkipCurrentIrpStackLocation( Irp );
    return IoCallDriver( ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject, Irp );    
    DbgPrint ("SW8_NO\n");
  }
  
    
  uu3.MaximumLength = (USHORT)((PFILE_NAME_INFORMATION)BufferName)->FileNameLength;
  uu3.Length = uu3.MaximumLength;
  uu3.Buffer = ((PFILE_NAME_INFORMATION)BufferName)->FileName;


  ExFreePool(BufferName);
  IoSkipCurrentIrpStackLocation( Irp );
  return IoCallDriver( ((PSFILTER_DEVICE_EXTENSION) DeviceObject->DeviceExtension)->AttachedToDeviceObject, Irp );

}



NTSTATUS
DeleteIrpRoutine(
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp,
    IN PVOID Context
    )
{
    UNREFERENCED_PARAMETER( DeviceObject );
    UNREFERENCED_PARAMETER( Context );

    *Irp->UserIosb = Irp->IoStatus;

    KeSetEvent(Irp->UserEvent,0,FALSE);
    IoFreeIrp(Irp);
    return STATUS_MORE_PROCESSING_REQUIRED;
}