UBUNTU: ubuntu: vbox -- update to 5.2.2-dfsg-2

[mirror_ubuntu-bionic-kernel.git] / ubuntu / vbox / vboxguest / VBoxGuestR0LibVMMDev.c

/* $Id: VBoxGuestR0LibVMMDev.cpp $ */
/** @file
 * VBoxGuestLibR0 - VMMDev device related functions.
 */

/*
 * Copyright (C) 2006-2017 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
 * VirtualBox OSE distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 */


/*********************************************************************************************************************************
*   Header Files                                                                                                                 *
*********************************************************************************************************************************/
#include "VBoxGuestR0LibInternal.h"


DECLVBGL(int) VbglR0QueryVMMDevMemory(VMMDevMemory **ppVMMDevMemory)
{
    int rc = vbglR0Enter();
    if (RT_FAILURE(rc))
        return rc;

    /* If the memory was not found, return an error. */
    if (!g_vbgldata.pVMMDevMemory)
        return VERR_NOT_SUPPORTED;

    *ppVMMDevMemory = g_vbgldata.pVMMDevMemory;
    return rc;
}