VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/linux/rtProcInitExePath-linux.cpp@ 81137

Last change on this file since 81137 was 76553, checked in by vboxsync, 6 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.5 KB
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1/* $Id: rtProcInitExePath-linux.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * IPRT - rtProcInitName, Linux.
4 */
5
6/*
7 * Copyright (C) 2006-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#define LOG_GROUP RTLOGGROUP_PROCESS
32#include <unistd.h>
33#include <errno.h>
34
35#include <iprt/string.h>
36#include <iprt/assert.h>
37#include <iprt/errcore.h>
38#include <iprt/path.h>
39#include "internal/process.h"
40#include "internal/path.h"
41
42
43DECLHIDDEN(int) rtProcInitExePath(char *pszPath, size_t cchPath)
44{
45 /*
46 * Read the /proc/self/exe link, convert to native and return it.
47 */
48 int cchLink = readlink("/proc/self/exe", pszPath, cchPath - 1);
49 if (cchLink > 0 && (size_t)cchLink <= cchPath - 1)
50 {
51 pszPath[cchLink] = '\0';
52
53 char const *pszTmp;
54 int rc = rtPathFromNative(&pszTmp, pszPath, NULL);
55 AssertMsgRCReturn(rc, ("rc=%Rrc pszLink=\"%s\"\nhex: %.*Rhxs\n", rc, pszPath, cchLink, pszPath), rc);
56 if (pszTmp != pszPath)
57 {
58 rc = RTStrCopy(pszPath, cchPath, pszTmp);
59 rtPathFreeIprt(pszTmp, pszPath);
60 }
61 return rc;
62 }
63
64 int err = errno;
65 int rc = RTErrConvertFromErrno(err);
66 AssertMsgFailed(("rc=%Rrc err=%d cchLink=%d\n", rc, err, cchLink));
67 return rc;
68}
69
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