NTSTATUS NtfsDeviceIoControl	(	IN PDEVICE_OBJECT	DeviceObject,
		IN ULONG	ControlCode,
		IN PVOID	InputBuffer,
		IN ULONG	InputBufferSize,
		IN OUT PVOID	OutputBuffer,
		IN OUT PULONG	OutputBufferSize,
		IN BOOLEAN	Override
	)

Definition at line 106 of file blockdev.c.

Referenced by NtfsGetVolumeData(), and NtfsHasFileSystem().

{
  PIO_STACK_LOCATION Stack;
  IO_STATUS_BLOCK IoStatus;
  KEVENT Event;
  PIRP Irp;
  NTSTATUS Status;

  KeInitializeEvent(&Event, NotificationEvent, FALSE);

  DPRINT("Building device I/O control request ...\n");
  Irp = IoBuildDeviceIoControlRequest(ControlCode,
                      DeviceObject,
                      InputBuffer,
                      InputBufferSize,
                      OutputBuffer,
                      (OutputBufferSize) ? *OutputBufferSize : 0,
                      FALSE,
                      &Event,
                      &IoStatus);
  if (Irp == NULL)
    {
      DPRINT("IoBuildDeviceIoControlRequest() failed\n");
      return STATUS_INSUFFICIENT_RESOURCES;
    }

  if (Override)
    {
      Stack = IoGetNextIrpStackLocation(Irp);
      Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
    }

  DPRINT("Calling IO Driver... with irp %p\n", Irp);
  Status = IoCallDriver(DeviceObject, Irp);
  if (Status == STATUS_PENDING)
    {
      KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
      Status = IoStatus.Status;
    }

  if (OutputBufferSize)
    {
      *OutputBufferSize = IoStatus.Information;
    }

  return Status;
}

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