VBoxGuestR3LibGR.cpp revision f11c4bc0c52722d9487aed3b0b7353131bee87ac
/* $Id$ */
/** @file
* VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, GR.
*/
/*
* Copyright (C) 2007 innotek GmbH
*
* 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.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#ifdef VBOX_VBGLR3_XFREE86
/* Rather than try to resolve all the header file conflicts, I will just
prototype what we need here. */
# define xalloc(size) Xalloc((unsigned long)(size))
# define xfree(ptr) Xfree((pointer)(ptr))
typedef void *pointer;
extern "C" pointer Xalloc(unsigned long /*amount*/);
extern "C" void Xfree(pointer /*ptr*/);
#else
# include <iprt/mem.h>
# include <iprt/assert.h>
# include <iprt/string.h>
#endif
#include <iprt/err.h>
#include <VBox/VBoxGuest.h>
#include "VBGLR3Internal.h"
int vbglR3GRAlloc(VMMDevRequestHeader **ppReq, uint32_t cb, VMMDevRequestType enmReqType)
{
VMMDevRequestHeader *pReq;
#ifdef VBOX_VBGLR3_XFREE86
pReq = (VMMDevRequestHeader *)xalloc(cb);
#else
AssertPtrReturn(ppReq, VERR_INVALID_PARAMETER);
AssertMsgReturn(cb >= sizeof(VMMDevRequestHeader), ("%#x vs %#zx\n", cb, sizeof(VMMDevRequestHeader)),
VERR_INVALID_PARAMETER);
pReq = (VMMDevRequestHeader *)RTMemTmpAlloc(cb);
#endif
if (RT_UNLIKELY(!pReq))
return VERR_NO_MEMORY;
pReq->size = cb;
pReq->version = VMMDEV_REQUEST_HEADER_VERSION;
pReq->requestType = enmReqType;
pReq->rc = VERR_GENERAL_FAILURE;
pReq->reserved1 = 0;
pReq->reserved2 = 0;
*ppReq = pReq;
return VINF_SUCCESS;
}
VBGLR3DECL(int) vbglR3GRPerform(VMMDevRequestHeader *pReq)
{
return vbglR3DoIOCtl(VBOXGUEST_IOCTL_VMMREQUEST(pReq->size), pReq, pReq->size);
}
void vbglR3GRFree(VMMDevRequestHeader *pReq)
{
#ifdef VBOX_VBGLR3_XFREE86
xfree(pReq);
#else
RTMemTmpFree(pReq);
#endif
}