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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibLog.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip |
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibLog.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibLog.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibLog.cpp new file mode 100644 index 00000000..04a167e0 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibLog.cpp @@ -0,0 +1,94 @@ +/* $Id: VBoxGuestR3LibLog.cpp $ */ +/** @file + * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Logging. + */ + +/* + * 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/err.h> +#include <iprt/mem.h> +#include <iprt/string.h> +#include "VBoxGuestR3LibInternal.h" + + +/** + * Write to the backdoor logger from ring 3 guest code. + * + * @returns IPRT status code. + * + * @param pch The string to log. Does not need to be terminated. + * @param cch The number of chars (bytes) to log. + * + * @remarks This currently does not accept more than 255 bytes of data at + * one time. It should probably be rewritten to use pass a pointer + * in the IOCtl. + */ +VBGLR3DECL(int) VbglR3WriteLog(const char *pch, size_t cch) +{ + /* + * Quietly skip empty strings. + * (Happens in the RTLogBackdoorPrintf case.) + */ + int rc; + if (cch > 0) + { + if (RT_VALID_PTR(pch)) + { + /* + * We need to repackage the string for ring-0. + */ + size_t cbMsg = VBGL_IOCTL_LOG_SIZE(cch); + PVBGLIOCLOG pMsg = (PVBGLIOCLOG)RTMemTmpAlloc(cbMsg); + if (pMsg) + { + VBGLREQHDR_INIT_EX(&pMsg->Hdr, VBGL_IOCTL_LOG_SIZE_IN(cch), VBGL_IOCTL_LOG_SIZE_OUT); + memcpy(pMsg->u.In.szMsg, pch, cch); + pMsg->u.In.szMsg[cch] = '\0'; + rc = vbglR3DoIOCtl(VBGL_IOCTL_LOG(cch), &pMsg->Hdr, cbMsg); + + RTMemTmpFree(pMsg); + } + else + rc = VERR_NO_TMP_MEMORY; + } + else + rc = VERR_INVALID_POINTER; + } + else + rc = VINF_SUCCESS; + return rc; +} + |