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