/*++

Copyright (c) 2000-2001  Microsoft Corporation

Module Name:

    devctrl.c

Abstract:

    This module implements routines related to handling IRP_MJ_DEVICE_CONTROL.

--*/

#include "udfx.h"

NTSTATUS
UdfxFsdDeviceControl(
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp
    )
/*++

Routine Description:

    This routine is called by the I/O manager to handle IRP_MJ_DEVICE_CONTROL
    requests.

Arguments:

    DeviceObject - Specifies the device object that the I/O request is for.

    Irp - Specifies the packet that describes the I/O request.

Return Value:

    Status of operation.

--*/
{
    NTSTATUS status;
    PUDF_VOLUME_EXTENSION VolumeExtension;

    VolumeExtension = (PUDF_VOLUME_EXTENSION)DeviceObject->DeviceExtension;

    //
    // Check if the volume has been dismounted.
    //

    if (VolumeExtension->Dismounted) {
        status = STATUS_VOLUME_DISMOUNTED;
        goto CleanupAndExit;
    }

    //
    // Pass the IRP down to the target device.  We don't need to touch any of
    // the arguments.
    //

    IoSkipCurrentIrpStackLocation(Irp);

    return IoCallDriver(VolumeExtension->TargetDeviceObject, Irp);

CleanupAndExit:
    Irp->IoStatus.Status = status;
    IoCompleteRequest(Irp, IO_NO_INCREMENT);

    return status;
}