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      1 /*	$NetBSD: t_raise.c,v 1.6 2016/11/03 22:08:31 kamil Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jukka Ruohonen.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 #include <sys/cdefs.h>
     32 __RCSID("$NetBSD: t_raise.c,v 1.6 2016/11/03 22:08:31 kamil Exp $");
     33 
     34 #include <atf-c.h>
     35 
     36 #include <signal.h>
     37 #include <string.h>
     38 #include <time.h>
     39 #include <unistd.h>
     40 
     41 static bool	fail;
     42 static int	count;
     43 static void	handler_err(int);
     44 static void	handler_ret(int);
     45 static void	handler_stress(int);
     46 static int	sig[] = { SIGALRM, SIGIO, SIGUSR1, SIGUSR2, SIGPWR };
     47 
     48 static void
     49 handler_stress(int signo)
     50 {
     51 	count++;
     52 }
     53 
     54 static void
     55 handler_err(int signo)
     56 {
     57 	size_t i;
     58 
     59 	for (i = 0; i < __arraycount(sig); i++) {
     60 
     61 		if (sig[i] == signo) {
     62 			fail = false;
     63 			break;
     64 		}
     65 	}
     66 }
     67 
     68 static void
     69 handler_ret(int signo)
     70 {
     71 
     72 	(void)sleep(1);
     73 
     74 	fail = false;
     75 }
     76 
     77 ATF_TC(raise_err);
     78 ATF_TC_HEAD(raise_err, tc)
     79 {
     80 	atf_tc_set_md_var(tc, "descr", "Test raise(3) for invalid parameters");
     81 }
     82 
     83 ATF_TC_BODY(raise_err, tc)
     84 {
     85 	int i = 0;
     86 
     87 	while (i < 10) {
     88 
     89 		ATF_REQUIRE(raise(10240 + i) == -1);
     90 
     91 		i++;
     92 	}
     93 }
     94 
     95 ATF_TC(raise_ret);
     96 ATF_TC_HEAD(raise_ret, tc)
     97 {
     98 	atf_tc_set_md_var(tc, "descr", "Test return order of raise(3)");
     99 }
    100 
    101 ATF_TC_BODY(raise_ret, tc)
    102 {
    103 	struct sigaction sa;
    104 
    105 	fail = true;
    106 
    107 	sa.sa_flags = 0;
    108 	sa.sa_handler = handler_ret;
    109 
    110 	/*
    111 	 * Verify that raise(3) does not return
    112 	 * before the signal handler returns.
    113 	 */
    114 	ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
    115 	ATF_REQUIRE(sigaction(SIGUSR1, &sa, 0) == 0);
    116 	ATF_REQUIRE(raise(SIGUSR1) == 0);
    117 
    118 	if (fail != false)
    119 		atf_tc_fail("raise(3) returned before signal handler");
    120 }
    121 
    122 ATF_TC(raise_sig);
    123 ATF_TC_HEAD(raise_sig, tc)
    124 {
    125 	atf_tc_set_md_var(tc, "descr", "A basic test of raise(3)");
    126 }
    127 
    128 ATF_TC_BODY(raise_sig, tc)
    129 {
    130 	struct timespec tv, tr;
    131 	struct sigaction sa;
    132 	size_t i;
    133 
    134 	for (i = 0; i < __arraycount(sig); i++) {
    135 
    136 		(void)memset(&sa, 0, sizeof(struct sigaction));
    137 
    138 		fail = true;
    139 
    140 		tv.tv_sec = 0;
    141 		tv.tv_nsec = 2;
    142 
    143 		sa.sa_flags = 0;
    144 		sa.sa_handler = handler_err;
    145 
    146 		ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
    147 		ATF_REQUIRE(sigaction(sig[i], &sa, 0) == 0);
    148 
    149 		ATF_REQUIRE(raise(sig[i]) == 0);
    150 		ATF_REQUIRE(nanosleep(&tv, &tr) == 0);
    151 
    152 		if (fail != false)
    153 			atf_tc_fail("raise(3) did not raise a signal");
    154 	}
    155 }
    156 
    157 ATF_TC(raise_stress);
    158 ATF_TC_HEAD(raise_stress, tc)
    159 {
    160 	atf_tc_set_md_var(tc, "descr", "A basic stress test with raise(3)");
    161 }
    162 
    163 ATF_TC_BODY(raise_stress, tc)
    164 {
    165 	static const int maxiter = 1000 * 10;
    166 	struct sigaction sa;
    167 	int i;
    168 
    169 	sa.sa_flags = 0;
    170 	sa.sa_handler = handler_stress;
    171 
    172 	ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
    173 	ATF_REQUIRE(sigaction(SIGUSR1, &sa, 0) == 0);
    174 
    175 	for (count = i = 0; i < maxiter; i++)
    176 		(void)raise(SIGUSR1);
    177 
    178 	if (count != maxiter)
    179 		atf_tc_fail("not all signals were caught");
    180 }
    181 
    182 ATF_TP_ADD_TCS(tp)
    183 {
    184 	ATF_TP_ADD_TC(tp, raise_err);
    185 	ATF_TP_ADD_TC(tp, raise_ret);
    186 	ATF_TP_ADD_TC(tp, raise_sig);
    187 	ATF_TP_ADD_TC(tp, raise_stress);
    188 
    189 	return atf_no_error();
    190 }
    191