rtProcInitExePath-freebsd.cpp revision cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * IPRT - rtProcInitName, FreeBSD.
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * Copyright (C) 2006-2008 Sun Microsystems, Inc.
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * available from http://www.virtualbox.org. This file is free software;
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * you can redistribute it and/or modify it under the terms of the GNU
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * General Public License (GPL) as published by the Free Software
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync * additional information or have any questions.
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync/*******************************************************************************
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync* Header Files *
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync*******************************************************************************/
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsyncDECLHIDDEN(int) rtProcInitExePath(char *pszPath, size_t cchPath)
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync aiName[2] = KERN_PROC_PATHNAME; /* This was introduced in FreeBSD 6.0, thus the #ifdef above. */
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync aiName[3] = -1; /* Shorthand for the current process. */
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync if (sysctl(aiName, RT_ELEMENTS(aiName), pszPath, &cchExePath, NULL, 0) == 0)
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertMsgRCReturn(rc, ("rc=%Rrc pszPath=\"%s\"\nhex: %.*Rhsx\n", rc, pszPath, cchExePath, pszPath), rc);
f0f603c5fba5a342c00101bbaf5fad0bbd44fb55vboxsync AssertReturn(cch <= cchPath, VERR_BUFFER_OVERFLOW);
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertMsgFailed(("rc=%Rrc errno=%d cchExePath=%d\n", rc, errno, cchExePath));
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync * Read the /proc/curproc/file link, convert to native and return it.
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync int cchLink = readlink("/proc/curproc/file", pszPath, cchPath - 1);
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertMsgRCReturn(rc, ("rc=%Rrc pszLink=\"%s\"\nhex: %.*Rhsx\n", rc, pszPath, cchLink, pszPath), rc);
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertReturn(cch <= cchPath, VERR_BUFFER_OVERFLOW);
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync * Fall back on the dynamic linker since /proc is optional.
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync if (*pszImageName == '/') /* this may not always be absolute, despite the docs. :-( */
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertMsgRCReturn(rc, ("rc=%Rrc pszImageName=\"%s\"\n", rc, pszImageName), rc);
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertReturn(cch <= cchPath, VERR_BUFFER_OVERFLOW);
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync /** @todo Try search the PATH for the file name or append the current
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync * directory, which ever makes sense... */
cbc4fdcbcaa06e2fa339e863429f05e9f537b0e9vboxsync AssertMsgFailed(("rc=%Rrc err=%d cchLink=%d hExe=%p\n", rc, err, cchLink, hExe));