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[src/trunk]: src Add a test for sigaltstack(2) and SA_ONSTACK
details: https://anonhg.NetBSD.org/src/rev/00ce9e424887
branches: trunk
changeset: 931762:00ce9e424887
user: ryo <ryo%NetBSD.org@localhost>
date: Thu Apr 30 11:03:29 2020 +0000
description:
Add a test for sigaltstack(2) and SA_ONSTACK
diffstat:
distrib/sets/lists/debug/mi | 3 +-
distrib/sets/lists/tests/mi | 3 +-
tests/lib/libc/sys/Makefile | 3 +-
tests/lib/libc/sys/t_sigaltstack.c | 100 +++++++++++++++++++++++++++++++++++++
4 files changed, 106 insertions(+), 3 deletions(-)
diffs (155 lines):
diff -r e4f8f89f3715 -r 00ce9e424887 distrib/sets/lists/debug/mi
--- a/distrib/sets/lists/debug/mi Thu Apr 30 10:59:02 2020 +0000
+++ b/distrib/sets/lists/debug/mi Thu Apr 30 11:03:29 2020 +0000
@@ -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
diff -r e4f8f89f3715 -r 00ce9e424887 distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi Thu Apr 30 10:59:02 2020 +0000
+++ b/distrib/sets/lists/tests/mi Thu Apr 30 11:03:29 2020 +0000
@@ -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
diff -r e4f8f89f3715 -r 00ce9e424887 tests/lib/libc/sys/Makefile
--- a/tests/lib/libc/sys/Makefile Thu Apr 30 10:59:02 2020 +0000
+++ b/tests/lib/libc/sys/Makefile Thu Apr 30 11:03:29 2020 +0000
@@ -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_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
diff -r e4f8f89f3715 -r 00ce9e424887 tests/lib/libc/sys/t_sigaltstack.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/lib/libc/sys/t_sigaltstack.c Thu Apr 30 11:03:29 2020 +0000
@@ -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();
+}
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