1 /* $OpenBSD: t_getpid.c,v 1.2 2021/12/13 16:56:48 deraadt Exp $ */ 2 /* $NetBSD: t_getpid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */ 3 4 /*- 5 * Copyright (c) 2011 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jukka Ruohonen. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "macros.h" 34 35 #include <sys/wait.h> 36 37 #include <stdlib.h> 38 #include <pthread.h> 39 #include <unistd.h> 40 41 #include "atf-c.h" 42 43 static int maxiter = 10; 44 static void *threadfunc(void *); 45 46 static void * 47 threadfunc(void *arg) 48 { 49 *(pid_t *)arg = getpid(); 50 51 return NULL; 52 } 53 54 ATF_TC(getpid_process); 55 ATF_TC_HEAD(getpid_process, tc) 56 { 57 atf_tc_set_md_var(tc, "descr", "Test getpid(2) with processes"); 58 } 59 60 ATF_TC_BODY(getpid_process, tc) 61 { 62 pid_t ppid, fpid, cpid, tpid, wpid; 63 int i, sta; 64 65 for (i = 0; i < maxiter; i++) { 66 67 tpid = getpid(); 68 fpid = fork(); 69 70 ATF_REQUIRE(fpid >= 0); 71 72 if (fpid == 0) { 73 74 cpid = getpid(); 75 ppid = getppid(); 76 77 if (tpid != ppid) 78 _exit(EXIT_FAILURE); 79 80 if (cpid == ppid) 81 _exit(EXIT_FAILURE); 82 83 if (tpid == fpid) 84 _exit(EXIT_FAILURE); 85 86 _exit(EXIT_SUCCESS); 87 } 88 89 wpid = wait(&sta); 90 91 if (wpid != fpid) 92 atf_tc_fail("PID mismatch"); 93 94 ATF_REQUIRE(WIFEXITED(sta) != 0); 95 96 if (WEXITSTATUS(sta) != EXIT_SUCCESS) 97 atf_tc_fail("PID mismatch"); 98 } 99 } 100 101 ATF_TC(getpid_thread); 102 ATF_TC_HEAD(getpid_thread, tc) 103 { 104 atf_tc_set_md_var(tc, "descr", "Test getpid(2) with threads"); 105 } 106 107 ATF_TC_BODY(getpid_thread, tc) 108 { 109 pid_t pid, tpid; 110 pthread_t tid; 111 int i, rv; 112 113 for (i = 0; i < maxiter; i++) { 114 115 pid = getpid(); 116 117 rv = pthread_create(&tid, NULL, threadfunc, &tpid); 118 ATF_REQUIRE(rv == 0); 119 120 rv = pthread_join(tid, NULL); 121 ATF_REQUIRE(rv == 0); 122 123 if (pid != tpid) 124 atf_tc_fail("Unequal PIDs"); 125 } 126 } 127 128 ATF_TP_ADD_TCS(tp) 129 { 130 131 ATF_TP_ADD_TC(tp, getpid_process); 132 ATF_TP_ADD_TC(tp, getpid_thread); 133 134 return atf_no_error(); 135 } 136