diff options
Diffstat (limited to 'src/VBox/Runtime/r3/netbsd/rtProcInitExePath-netbsd.cpp')
-rw-r--r-- | src/VBox/Runtime/r3/netbsd/rtProcInitExePath-netbsd.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/netbsd/rtProcInitExePath-netbsd.cpp b/src/VBox/Runtime/r3/netbsd/rtProcInitExePath-netbsd.cpp new file mode 100644 index 00000000..34d6c2cc --- /dev/null +++ b/src/VBox/Runtime/r3/netbsd/rtProcInitExePath-netbsd.cpp @@ -0,0 +1,100 @@ +/* $Id: rtProcInitExePath-netbsd.cpp $ */ +/** @file + * IPRT - rtProcInitName, NetBSD. + */ + +/* + * Copyright (C) 2006-2019 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 * +*********************************************************************************************************************************/ +#define LOG_GROUP RTLOGGROUP_PROCESS +#include <sys/param.h> +#include <sys/sysctl.h> +#include <unistd.h> +#include <errno.h> +#include <dlfcn.h> +#include <link.h> + +#include <iprt/string.h> +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include <iprt/path.h> +#include "internal/process.h" +#include "internal/path.h" + + +DECLHIDDEN(int) rtProcInitExePath(char *pszPath, size_t cchPath) +{ + /* + * Read the /proc/curproc/file link, convert to native and return it. + */ + int cchLink = readlink("/proc/curproc/exe", pszPath, cchPath - 1); + if (cchLink > 0 && (size_t)cchLink <= cchPath - 1) + { + pszPath[cchLink] = '\0'; + + char const *pszTmp; + int rc = rtPathFromNative(&pszTmp, pszPath, NULL); + AssertMsgRCReturn(rc, ("rc=%Rrc pszLink=\"%s\"\nhex: %.*Rhxs\n", rc, pszPath, cchLink, pszPath), rc); + if (pszTmp != pszPath) + { + rc = RTStrCopy(pszPath, cchPath, pszTmp); + rtPathFreeIprt(pszTmp, pszPath); + } + return rc; + } + + int err = errno; + + /* + * Fall back on the dynamic linker since /proc is optional. + */ + void *hExe = dlopen(NULL, 0); + if (hExe) + { + struct link_map const *pLinkMap = 0; + if (dlinfo(hExe, RTLD_DI_LINKMAP, &pLinkMap) == 0) + { + const char *pszImageName = pLinkMap->l_name; + if (*pszImageName == '/') /* this may not always be absolute, despite the docs. :-( */ + { + char const *pszTmp; + int rc = rtPathFromNative(&pszTmp, pszImageName, NULL); + AssertMsgRCReturn(rc, ("rc=%Rrc pszImageName=\"%s\"\n", rc, pszImageName), rc); + if (pszTmp != pszPath) + { + rc = RTStrCopy(pszPath, cchPath, pszTmp); + rtPathFreeIprt(pszTmp, pszPath); + } + return rc; + } + /** @todo Try search the PATH for the file name or append the current + * directory, which ever makes sense... */ + } + } + + int rc = RTErrConvertFromErrno(err); + AssertMsgFailed(("rc=%Rrc err=%d cchLink=%d hExe=%p\n", rc, err, cchLink, hExe)); + return rc; +} |