1 /* $NetBSD: t_nice.c,v 1.8 2012/03/18 07:00:51 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_nice.c,v 1.8 2012/03/18 07:00:51 jruoho Exp $"); 33 34 #include <sys/resource.h> 35 #include <sys/wait.h> 36 37 #include <atf-c.h> 38 #include <errno.h> 39 #include <limits.h> 40 #include <pthread.h> 41 #include <stdlib.h> 42 #include <unistd.h> 43 44 static void *threadfunc(void *); 45 46 static void * 47 threadfunc(void *arg) 48 { 49 int pri, val; 50 51 val = *(int *)arg; 52 53 errno = 0; 54 pri = getpriority(PRIO_PROCESS, 0); 55 ATF_REQUIRE(errno == 0); 56 57 if (pri != val) 58 atf_tc_fail("nice(3) value was not propagated to threads"); 59 60 return NULL; 61 } 62 63 ATF_TC(nice_err); 64 ATF_TC_HEAD(nice_err, tc) 65 { 66 atf_tc_set_md_var(tc, "descr", 67 "Test nice(3) for invalid parameters (PR lib/42587)"); 68 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 69 } 70 71 ATF_TC_BODY(nice_err, tc) 72 { 73 int i; 74 75 #ifdef __FreeBSD__ 76 atf_tc_expect_fail("nice(incr) with incr < 0 fails with unprivileged " 77 "users and sets errno == EPERM; see PR # 189821 for more details"); 78 #endif 79 80 /* 81 * The call should fail with EPERM if the 82 * supplied parameter is negative and the 83 * caller does not have privileges. 84 */ 85 for (i = -20; i < 0; i++) { 86 87 errno = 0; 88 89 ATF_REQUIRE_ERRNO(EPERM, nice(i) == -1); 90 } 91 } 92 93 ATF_TC(nice_priority); 94 ATF_TC_HEAD(nice_priority, tc) 95 { 96 atf_tc_set_md_var(tc, "descr", "Test nice(3) vs. getpriority(2)"); 97 } 98 99 ATF_TC_BODY(nice_priority, tc) 100 { 101 #ifdef __FreeBSD__ 102 int i, pri, pri2, nic; 103 #else 104 int i, pri, nic; 105 #endif 106 pid_t pid; 107 int sta; 108 109 for (i = 0; i <= 20; i++) { 110 111 nic = nice(i); 112 ATF_REQUIRE(nic != -1); 113 114 errno = 0; 115 pri = getpriority(PRIO_PROCESS, 0); 116 ATF_REQUIRE(errno == 0); 117 118 #ifdef __NetBSD__ 119 if (nic != pri) 120 atf_tc_fail("nice(3) and getpriority(2) conflict"); 121 #endif 122 123 /* 124 * Also verify that the nice(3) values 125 * are inherited by child processes. 126 */ 127 pid = fork(); 128 ATF_REQUIRE(pid >= 0); 129 130 if (pid == 0) { 131 132 errno = 0; 133 #ifdef __FreeBSD__ 134 pri = getpriority(PRIO_PROCESS, 0); 135 #else 136 pri2 = getpriority(PRIO_PROCESS, 0); 137 #endif 138 ATF_REQUIRE(errno == 0); 139 140 #ifdef __FreeBSD__ 141 if (pri != pri2) 142 #else 143 if (nic != pri) 144 #endif 145 _exit(EXIT_FAILURE); 146 147 _exit(EXIT_SUCCESS); 148 } 149 150 (void)wait(&sta); 151 152 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) 153 atf_tc_fail("nice(3) value was not inherited"); 154 } 155 } 156 157 ATF_TC(nice_root); 158 ATF_TC_HEAD(nice_root, tc) 159 { 160 atf_tc_set_md_var(tc, "descr", "Test that nice(3) works"); 161 atf_tc_set_md_var(tc, "require.user", "root"); 162 } 163 164 ATF_TC_BODY(nice_root, tc) 165 { 166 int i; 167 168 for (i = -20; i <= 20; i++) { 169 170 ATF_REQUIRE(nice(i) != -1); 171 } 172 } 173 174 ATF_TC(nice_thread); 175 ATF_TC_HEAD(nice_thread, tc) 176 { 177 atf_tc_set_md_var(tc, "descr", "Test nice(3) with threads"); 178 } 179 180 ATF_TC_BODY(nice_thread, tc) 181 { 182 pthread_t tid[5]; 183 #ifdef __FreeBSD__ 184 int pri, rv, val; 185 #else 186 int rv, val; 187 #endif 188 size_t i; 189 190 /* 191 * Test that the scheduling priority is 192 * propagated to all system scope threads. 193 */ 194 for (i = 0; i < __arraycount(tid); i++) { 195 196 val = nice(i); 197 ATF_REQUIRE(val != -1); 198 199 #ifdef __FreeBSD__ 200 pri = getpriority(PRIO_PROCESS, 0); 201 rv = pthread_create(&tid[i], NULL, threadfunc, &pri); 202 #else 203 rv = pthread_create(&tid[i], NULL, threadfunc, &val); 204 #endif 205 ATF_REQUIRE(rv == 0); 206 207 rv = pthread_join(tid[i], NULL); 208 ATF_REQUIRE(rv == 0); 209 } 210 } 211 212 ATF_TP_ADD_TCS(tp) 213 { 214 215 ATF_TP_ADD_TC(tp, nice_err); 216 ATF_TP_ADD_TC(tp, nice_priority); 217 ATF_TP_ADD_TC(tp, nice_root); 218 ATF_TP_ADD_TC(tp, nice_thread); 219 220 return atf_no_error(); 221 } 222