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lib/libc/secure/secure_common.c
- This file was added.
| /* $NetBSD: stack_protector.c,v 1.4 2006/11/22 17:23:25 christos Exp $ */ | |||||
| /* $OpenBSD: stack_protector.c,v 1.10 2006/03/31 05:34:44 deraadt Exp $ */ | |||||
| /* | |||||
| * Copyright (c) 2002 Hiroaki Etoh, Federico G. Schwindt, and Miodrag Vallat. | |||||
| * All rights reserved. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR | |||||
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |||||
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |||||
| * DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, | |||||
| * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |||||
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |||||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |||||
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | |||||
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||||
| * POSSIBILITY OF SUCH DAMAGE. | |||||
| * | |||||
| */ | |||||
| #undef _FORTIFY_SOURCE | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include "namespace.h" | |||||
| #include <sys/param.h> | |||||
| #include <sys/sysctl.h> | |||||
| #include <sys/types.h> | |||||
| #include <errno.h> | |||||
| #include <link.h> | |||||
| #include <signal.h> | |||||
| #include <string.h> | |||||
| #include <syslog.h> | |||||
| #include <unistd.h> | |||||
| #include "un-namespace.h" | |||||
| #include "libc_private.h" | |||||
| static void __fail(const char *) __dead2; | |||||
| /*ARGSUSED*/ | |||||
| static void | |||||
| __fail(const char *msg) | |||||
| { | |||||
| struct sigaction sa; | |||||
| sigset_t mask; | |||||
| /* Immediately block all signal handlers from running code */ | |||||
| (void)sigfillset(&mask); | |||||
| (void)sigdelset(&mask, SIGABRT); | |||||
| (void)_sigprocmask(SIG_BLOCK, &mask, NULL); | |||||
| /* This may fail on a chroot jail... */ | |||||
| syslog(LOG_CRIT, "%s", msg); | |||||
| (void)memset(&sa, 0, sizeof(sa)); | |||||
| (void)sigemptyset(&sa.sa_mask); | |||||
| sa.sa_flags = 0; | |||||
| sa.sa_handler = SIG_DFL; | |||||
| (void)sigaction(SIGABRT, &sa, NULL); | |||||
| (void)kill(getpid(), SIGABRT); | |||||
| _exit(127); | |||||
| } | |||||
| void | |||||
| __secure_fail(const char *msg) | |||||
| { | |||||
| __fail(msg); | |||||
| } | |||||