84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
/* $NetBSD: stack_protector.c,v 1.9 2013/08/19 22:14:37 matt 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.
|
|
*
|
|
*/
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: stack_protector.c,v 1.9 2013/08/19 22:14:37 matt Exp $");
|
|
|
|
#ifdef _LIBC
|
|
#include "namespace.h"
|
|
#endif
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <ssp/ssp.h>
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#ifdef _LIBC
|
|
#include <syslog.h>
|
|
#include "extern.h"
|
|
#else
|
|
#define __sysctl sysctl
|
|
void xprintf(const char *fmt, ...);
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
long __stack_chk_guard[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
static void __fail(const char *) __attribute__((__noreturn__));
|
|
__dead void __stack_chk_fail_local(void);
|
|
void __guard_setup(void);
|
|
|
|
void __section(".text.startup")
|
|
__guard_setup(void)
|
|
{
|
|
#if !defined(__minix)
|
|
static const int mib[2] = { CTL_KERN, KERN_ARND };
|
|
size_t len;
|
|
#endif /* !defined(__minix) */
|
|
|
|
if (__stack_chk_guard[0] != 0)
|
|
return;
|
|
|
|
#if !defined(__minix)
|
|
len = sizeof(__stack_chk_guard);
|
|
if (__sysctl(mib, (u_int)__arraycount(mib), __stack_chk_guard, &len,
|
|
NULL, 0) == -1 || len != sizeof(__stack_chk_guard)) {
|
|
#endif /* !defined(__minix) */
|
|
/* If sysctl was unsuccessful, use the "terminator canary". */
|
|
((unsigned char *)(void *)__stack_chk_guard)[0] = 0;
|
|
((unsigned char *)(void *)__stack_chk_guard)[1] = 0;
|
|
((unsigned char *)(void *)__stack_chk_guard)[2] = '\n';
|
|
((unsigned char *)(void *)__stack_chk_guard)[3] = 255;
|
|
#if !defined(__minix)
|
|
}
|
|
#endif /* !defined(__minix) */
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static void
|
|
__fail(const char *msg)
|
|
{
|
|
#ifdef _LIBC
|
|
struct syslog_data sdata = SYSLOG_DATA_INIT;
|
|
/* MINIX: #endif */
|
|
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);
|
|
|
|
/* MINIX: #ifdef _LIBC */
|
|
/* This may fail on a chroot jail... */
|
|
syslog_ss(LOG_CRIT, &sdata, "%s", msg);
|
|
#else
|
|
xprintf("%s: %s\n", getprogname(), msg);
|
|
#endif
|
|
|
|
#if defined(__minix) && defined(_LIBC)
|
|
(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)raise(SIGABRT);
|
|
#endif /* defined(__minix) && defined(_LIBC) */
|
|
_exit(127);
|
|
}
|
|
|
|
void
|
|
__stack_chk_fail(void)
|
|
{
|
|
__fail("stack overflow detected; terminated");
|
|
}
|
|
|
|
void
|
|
__chk_fail(void)
|
|
{
|
|
__fail("buffer overflow detected; terminated");
|
|
}
|
|
|
|
void
|
|
__stack_chk_fail_local(void)
|
|
{
|
|
__stack_chk_fail();
|
|
}
|