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Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibHGCM.cpp')
| -rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibHGCM.cpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibHGCM.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibHGCM.cpp new file mode 100644 index 00000000..c2f907a7 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibHGCM.cpp @@ -0,0 +1,95 @@ +/* $Id: VBoxGuestR3LibHGCM.cpp $ */ +/** @file + * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, + * generic HGCM. + */ + +/* + * Copyright (C) 2015-2019 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 "VBoxGuestR3LibInternal.h" +#include <VBox/VBoxGuestLib.h> +#include <iprt/string.h> + + +/** + * Connects to an HGCM service. + * + * @returns VBox status code + * @param pszServiceName Name of the host service. + * @param pidClient Where to put the client ID on success. The client ID + * must be passed to all the other calls to the service. + */ +VBGLR3DECL(int) VbglR3HGCMConnect(const char *pszServiceName, HGCMCLIENTID *pidClient) +{ + VBGLIOCHGCMCONNECT Info; + RT_ZERO(Info); + VBGLREQHDR_INIT(&Info.Hdr, HGCM_CONNECT); + Info.u.In.Loc.type = VMMDevHGCMLoc_LocalHost_Existing; + strcpy(Info.u.In.Loc.u.host.achName, pszServiceName); + + int rc = vbglR3DoIOCtl(VBGL_IOCTL_HGCM_CONNECT, &Info.Hdr, sizeof(Info)); + if (RT_SUCCESS(rc)) + *pidClient = Info.u.Out.idClient; + return rc; +} + + +/** + * Disconnect from an HGCM service. + * + * @returns VBox status code. + * @param idClient The client id returned by VbglR3InfoSvcConnect(). + */ +VBGLR3DECL(int) VbglR3HGCMDisconnect(HGCMCLIENTID idClient) +{ + VBGLIOCHGCMDISCONNECT Info; + VBGLREQHDR_INIT(&Info.Hdr, HGCM_DISCONNECT); + Info.u.In.idClient = idClient; + + return vbglR3DoIOCtl(VBGL_IOCTL_HGCM_DISCONNECT, &Info.Hdr, sizeof(Info)); +} + + +/** + * Makes a fully prepared HGCM call. + * + * @returns VBox status code. + * @param pInfo Fully prepared HGCM call info. + * @param cbInfo Size of the info. This may sometimes be larger than + * what the parameter count indicates because of + * parameter changes between versions and such. + */ +VBGLR3DECL(int) VbglR3HGCMCall(PVBGLIOCHGCMCALL pInfo, size_t cbInfo) +{ + /* Expect caller to have filled in pInfo. */ + AssertMsg(pInfo->Hdr.cbIn == cbInfo, ("cbIn=%#x cbInfo=%#zx\n", pInfo->Hdr.cbIn, cbInfo)); + AssertMsg(pInfo->Hdr.cbOut == cbInfo, ("cbOut=%#x cbInfo=%#zx\n", pInfo->Hdr.cbOut, cbInfo)); + Assert(sizeof(*pInfo) + pInfo->cParms * sizeof(HGCMFunctionParameter) <= cbInfo); + Assert(pInfo->u32ClientID != 0); + + return vbglR3DoIOCtl(VBGL_IOCTL_HGCM_CALL(cbInfo), &pInfo->Hdr, cbInfo); +} + |