1 /* $NetBSD: t_alarm.c,v 1.2 2011/05/10 06:58:17 jruoho 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_alarm.c,v 1.2 2011/05/10 06:58:17 jruoho Exp $"); 33 34 #include <sys/wait.h> 35 36 #include <atf-c.h> 37 #include <stdlib.h> 38 #include <signal.h> 39 #include <unistd.h> 40 41 static bool fail; 42 static void handler(int); 43 44 static void 45 handler(int signo) 46 { 47 48 if (signo == SIGALRM) 49 fail = false; 50 } 51 52 ATF_TC(alarm_basic); 53 ATF_TC_HEAD(alarm_basic, tc) 54 { 55 atf_tc_set_md_var(tc, "descr", "A basic test of alarm(3)"); 56 } 57 58 ATF_TC_BODY(alarm_basic, tc) 59 { 60 61 ATF_REQUIRE(signal(SIGALRM, handler) == 0); 62 63 fail = true; 64 65 (void)alarm(1); 66 (void)sleep(2); 67 68 if (fail != false) 69 atf_tc_fail("alarm(3) failed to deliver signal"); 70 } 71 72 ATF_TC(alarm_fork); 73 ATF_TC_HEAD(alarm_fork, tc) 74 { 75 atf_tc_set_md_var(tc, "descr", "Does fork(2) clear a pending alarm?"); 76 } 77 78 ATF_TC_BODY(alarm_fork, tc) 79 { 80 unsigned int rv; 81 pid_t pid; 82 int sta; 83 84 /* 85 * Any pending alarms should be 86 * cleared in the child process. 87 */ 88 (void)alarm(60); 89 90 pid = fork(); 91 ATF_REQUIRE(pid >= 0); 92 93 if (pid == 0) { 94 95 rv = alarm(0); 96 97 if (rv != 0) 98 _exit(EXIT_FAILURE); 99 100 _exit(EXIT_SUCCESS); 101 } 102 103 (void)alarm(0); 104 (void)wait(&sta); 105 106 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 107 atf_tc_fail("pending alarm was not cleared for child"); 108 } 109 110 ATF_TC(alarm_previous); 111 ATF_TC_HEAD(alarm_previous, tc) 112 { 113 atf_tc_set_md_var(tc, "descr", "Test return value from alarm(3)"); 114 } 115 116 ATF_TC_BODY(alarm_previous, tc) 117 { 118 unsigned int rv; 119 120 /* 121 * See that alarm(3) returns the amount 122 * left on the timer from the previous call. 123 */ 124 rv = alarm(60); 125 126 if (rv != 0) 127 goto fail; 128 129 rv = alarm(0); 130 131 if (rv < 50) 132 goto fail; 133 134 (void)alarm(0); 135 136 return; 137 138 fail: 139 atf_tc_fail("invalid return value from alarm(3)"); 140 } 141 142 ATF_TP_ADD_TCS(tp) 143 { 144 145 ATF_TP_ADD_TC(tp, alarm_basic); 146 ATF_TP_ADD_TC(tp, alarm_fork); 147 ATF_TP_ADD_TC(tp, alarm_previous); 148 149 return atf_no_error(); 150 } 151