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Diffstat (limited to '')
-rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp new file mode 100644 index 00000000..e80f1f55 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibGR.cpp @@ -0,0 +1,90 @@ +/* $Id: VBoxGuestR3LibGR.cpp $ */ +/** @file + * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, GR. + */ + +/* + * Copyright (C) 2007-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/mem.h> +#include <iprt/assert.h> +#include <iprt/string.h> +#include <iprt/errcore.h> +#include "VBoxGuestR3LibInternal.h" + + +int vbglR3GRAlloc(VMMDevRequestHeader **ppReq, size_t cb, VMMDevRequestType enmReqType) +{ + VMMDevRequestHeader *pReq; + + AssertPtrReturn(ppReq, VERR_INVALID_PARAMETER); + AssertMsgReturn(cb >= sizeof(VMMDevRequestHeader) && cb < _1G, ("%#zx vs %#zx\n", cb, sizeof(VMMDevRequestHeader)), + VERR_INVALID_PARAMETER); + + pReq = (VMMDevRequestHeader *)RTMemTmpAlloc(cb); + if (RT_LIKELY(pReq)) + { + pReq->size = (uint32_t)cb; + pReq->version = VMMDEV_REQUEST_HEADER_VERSION; + pReq->requestType = enmReqType; + pReq->rc = VERR_GENERAL_FAILURE; + pReq->reserved1 = 0; + pReq->fRequestor = 0; + + *ppReq = pReq; + + return VINF_SUCCESS; + } + return VERR_NO_MEMORY; +} + + +int vbglR3GRPerform(VMMDevRequestHeader *pReq) +{ + PVBGLREQHDR pReqHdr = (PVBGLREQHDR)pReq; + uint32_t const cbReq = pReqHdr->cbIn; + Assert(pReqHdr->cbOut == 0 || pReqHdr->cbOut == cbReq); + pReqHdr->cbOut = cbReq; + if (pReq->size < _1K) + return vbglR3DoIOCtl(VBGL_IOCTL_VMMDEV_REQUEST(cbReq), pReqHdr, cbReq); + return vbglR3DoIOCtl(VBGL_IOCTL_VMMDEV_REQUEST_BIG, pReqHdr, cbReq); +} + + +void vbglR3GRFree(VMMDevRequestHeader *pReq) +{ + RTMemTmpFree(pReq); +} + |