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Add a test for sigaltstack(2) and SA_ONSTACK

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This commit is contained in:
ryo 2020-04-30 11:03:29 +00:00
parent 951b888a45
commit 1da5a7c800
4 changed files with 106 additions and 3 deletions
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3
distrib/sets/lists/debug/mi
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@ -1,4 +1,4 @@
# $NetBSD: mi,v 1.307 2020/04/26 21:05:36 mlelstv Exp $
# $NetBSD: mi,v 1.308 2020/04/30 11:03:29 ryo Exp $
./etc/mtree/set.debug comp-sys-root
./usr/lib comp-sys-usr compatdir
./usr/lib/i18n/libBIG5_g.a comp-c-debuglib debuglib,compatfile
@ -2175,6 +2175,7 @@
./usr/libdata/debug/usr/tests/lib/libc/sys/t_setrlimit.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_setuid.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_sigaction.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_sigaltstack.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_sigqueue.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_sigtimedwait.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_sigtimedwait_pr_47625.debug tests-obsolete obsolete,compattestfile

3
distrib/sets/lists/tests/mi
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@ -1,4 +1,4 @@
# $NetBSD: mi,v 1.838 2020/04/29 23:15:22 rillig Exp $
# $NetBSD: mi,v 1.839 2020/04/30 11:03:29 ryo Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@ -3173,6 +3173,7 @@
./usr/tests/lib/libc/sys/t_setrlimit tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_setuid tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_sigaction tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_sigaltstack tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_sigqueue tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_sigtimedwait tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_sigtimedwait_pr_47625 tests-obsolete obsolete

3
tests/lib/libc/sys/Makefile
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@ -1,4 +1,4 @@
# $NetBSD: Makefile,v 1.63 2020/04/26 18:53:33 thorpej Exp $
# $NetBSD: Makefile,v 1.64 2020/04/30 11:03:29 ryo Exp $
MKMAN= no
@ -70,6 +70,7 @@ TESTS_C+= t_sendrecv
TESTS_C+= t_setrlimit
TESTS_C+= t_setuid
TESTS_C+= t_sigaction
TESTS_C+= t_sigaltstack
TESTS_C+= t_sigqueue
TESTS_C+= t_sigtimedwait
TESTS_C+= t_socketpair

100
tests/lib/libc/sys/t_sigaltstack.c Normal file
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@ -0,0 +1,100 @@
/* $NetBSD: t_sigaltstack.c,v 1.1 2020/04/30 11:03:29 ryo Exp $ */
/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
* 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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: t_sigaltstack.c,v 1.1 2020/04/30 11:03:29 ryo Exp $");
#include <signal.h>
#include <stdbool.h>
#include <atf-c.h>
#include "h_macros.h"
static stack_t sigstk;
static bool handler_called;
static bool handler_use_altstack;
static void
handler(int signo __unused)
{
char *sp = alloca(128);
handler_called = true;
/* checking if the stack pointer is within the range of altstack */
if ((char *)sigstk.ss_sp <= sp &&
((char *)sigstk.ss_sp + sigstk.ss_size) > sp)
handler_use_altstack = true;
else
handler_use_altstack = false;
}
ATF_TC(sigaltstack_onstack);
ATF_TC_HEAD(sigaltstack_onstack, tc)
{
atf_tc_set_md_var(tc, "descr",
"Checks for using signal stack with SA_ONSTACK");
}
ATF_TC_BODY(sigaltstack_onstack, tc)
{
struct sigaction sa;
int i;
/* set a signal handler use alternative stack */
memset(&sigstk, 0, sizeof(sigstk));
sigstk.ss_sp = malloc(SIGSTKSZ);
ATF_REQUIRE(sigstk.ss_sp != NULL);
sigstk.ss_size = SIGSTKSZ;
sigstk.ss_flags = 0;
ATF_REQUIRE(sigaltstack(&sigstk, 0) == 0);
sigemptyset(&sa.sa_mask);
sa.sa_handler = handler;
sa.sa_flags = SA_ONSTACK;
sigaction(SIGUSR1, &sa, NULL);
/* test several times */
for (i = 1; i <= 5; i++) {
handler_called = false;
kill(getpid(), SIGUSR1);
if (!handler_called)
atf_tc_fail("signal handler wasn't called (count=%d)", i);
if (!handler_use_altstack)
atf_tc_fail("alternative stack wasn't used (count=%d)", i);
}
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, sigaltstack_onstack);
return atf_no_error();
}