rtProcInitExePath-freebsd.cpp revision 92453c7e11969eccff568c08178524f057247426
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync/* $Id$ */
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync/** @file
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * IPRT - rtProcInitName, FreeBSD.
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync */
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync
c7814cf6e1240a519cbec0441e033d0e2470ed00vboxsync/*
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * Copyright (C) 2006-2008 Oracle Corporation
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync *
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * available from http://www.virtualbox.org. This file is free software;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * you can redistribute it and/or modify it under the terms of the GNU
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * General Public License (GPL) as published by the Free Software
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync *
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * The contents of this file may alternatively be used under the terms
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * of the Common Development and Distribution License Version 1.0
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * VirtualBox OSE distribution, in which case the provisions of the
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * CDDL are applicable instead of those of the GPL.
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync *
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * You may elect to license modified versions of this file under the
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * terms and conditions of either the GPL or the CDDL or both.
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync */
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync/*******************************************************************************
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync* Header Files *
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync*******************************************************************************/
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#define LOG_GROUP RTLOGGROUP_PROCESS
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <sys/param.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <sys/sysctl.h>
4d3f12a2094df73f5e04b71d3b7623aa0130285cvboxsync#include <unistd.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <errno.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <dlfcn.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <link.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <iprt/string.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <iprt/assert.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include <iprt/err.h>
8f2d4fea58e2d827a8269d0c96d307217b5ab14dvboxsync#include <iprt/path.h>
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync#include "internal/process.h"
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync#include "internal/path.h"
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsyncDECLHIDDEN(int) rtProcInitExePath(char *pszPath, size_t cchPath)
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync{
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync#ifdef KERN_PROC_PATHNAME
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync int aiName[4];
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync aiName[0] = CTL_KERN;
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync aiName[1] = KERN_PROC;
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync aiName[2] = KERN_PROC_PATHNAME; /* This was introduced in FreeBSD 6.0, thus the #ifdef above. */
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync aiName[3] = -1; /* Shorthand for the current process. */
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync size_t cchExePath = cchPath;
404df8b2baf3f931a57bffd773b093d0fe40cd50vboxsync if (sysctl(aiName, RT_ELEMENTS(aiName), pszPath, &cchExePath, NULL, 0) == 0)
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync {
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync const char *pszTmp;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync int rc = rtPathFromNative(&pszTmp, pszPath, NULL);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync AssertMsgRCReturn(rc, ("rc=%Rrc pszPath=\"%s\"\nhex: %.*Rhxs\n", rc, pszPath, cchExePath, pszPath), rc);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync if (pszTmp != pszPath)
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync {
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync rc = RTStrCopy(pszPath, cchPath, pszTmp);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync rtPathFreeIprt(pszTmp, pszPath);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync }
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync return rc;
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync }
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync int rc = RTErrConvertFromErrno(errno);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync AssertMsgFailed(("rc=%Rrc errno=%d cchExePath=%d\n", rc, errno, cchExePath));
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync return rc;
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync#else
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync /*
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync * Read the /proc/curproc/file link, convert to native and return it.
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync */
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync int cchLink = readlink("/proc/curproc/file", pszPath, cchPath - 1);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync if (cchLink > 0 && (size_t)cchLink <= cchPath - 1)
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync {
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync pszPath[cchLink] = '\0';
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync char const *pszTmp;
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync int rc = rtPathFromNative(&pszTmp, pszPath);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync AssertMsgRCReturn(rc, ("rc=%Rrc pszLink=\"%s\"\nhex: %.*Rhxs\n", rc, pszPath, cchLink, pszPath), rc);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync if (pszTmp != pszPath)
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync {
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync rc = RTStrCopy(pszPath, cchPath, pszTmp);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync rtPathFreeIprt(pszTmp);
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync }
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync return rc;
f6f1d32779a2a6a1a4579c3bf6ff3aa0c37f0823vboxsync }
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync int err = errno;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync /*
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * Fall back on the dynamic linker since /proc is optional.
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync */
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync void *hExe = dlopen(NULL, 0);
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync if (hExe)
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync {
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync struct link_map const *pLinkMap = 0;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync if (dlinfo(hExe, RTLD_DI_LINKMAP, &pLinkMap) == 0)
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync {
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync const char *pszImageName = pLinkMap->l_name;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync if (*pszImageName == '/') /* this may not always be absolute, despite the docs. :-( */
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync {
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync char const *pszTmp;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync int rc = rtPathFromNative(&pszTmp, pszImageName, NULL);
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync AssertMsgRCReturn(rc, ("rc=%Rrc pszImageName=\"%s\"\n", rc, pszImageName), rc);
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync if (pszTmp != pszPath)
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync {
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync rc = RTStrCopy(pszPath, cchPath, pszTmp);
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync rtPathFreeIprt(pszTmp, pszPath);
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync }
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync return rc;
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync }
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync /** @todo Try search the PATH for the file name or append the current
4e38f78b4916ef128a3902ed2a8d7e8d7f947d8dvboxsync * directory, which ever makes sense... */
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync }
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync }
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync int rc = RTErrConvertFromErrno(err);
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync AssertMsgFailed(("rc=%Rrc err=%d cchLink=%d hExe=%p\n", rc, err, cchLink, hExe));
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync return rc;
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync#endif
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync}
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync
54d2d2606d7c83a456819cd038a73e0f9a600ca4vboxsync