xref: /freebsd/contrib/netbsd-tests/lib/libc/gen/t_nice.c (revision 57718be8fa0bd5edc11ab9a72e68cc71982939a6)
1*57718be8SEnji Cooper /*	$NetBSD: t_nice.c,v 1.8 2012/03/18 07:00:51 jruoho Exp $ */
2*57718be8SEnji Cooper 
3*57718be8SEnji Cooper /*-
4*57718be8SEnji Cooper  * Copyright (c) 2011 The NetBSD Foundation, Inc.
5*57718be8SEnji Cooper  * All rights reserved.
6*57718be8SEnji Cooper  *
7*57718be8SEnji Cooper  * This code is derived from software contributed to The NetBSD Foundation
8*57718be8SEnji Cooper  * by Jukka Ruohonen.
9*57718be8SEnji Cooper  *
10*57718be8SEnji Cooper  * Redistribution and use in source and binary forms, with or without
11*57718be8SEnji Cooper  * modification, are permitted provided that the following conditions
12*57718be8SEnji Cooper  * are met:
13*57718be8SEnji Cooper  * 1. Redistributions of source code must retain the above copyright
14*57718be8SEnji Cooper  *    notice, this list of conditions and the following disclaimer.
15*57718be8SEnji Cooper  * 2. Redistributions in binary form must reproduce the above copyright
16*57718be8SEnji Cooper  *    notice, this list of conditions and the following disclaimer in the
17*57718be8SEnji Cooper  *    documentation and/or other materials provided with the distribution.
18*57718be8SEnji Cooper  *
19*57718be8SEnji Cooper  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*57718be8SEnji Cooper  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*57718be8SEnji Cooper  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*57718be8SEnji Cooper  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*57718be8SEnji Cooper  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*57718be8SEnji Cooper  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*57718be8SEnji Cooper  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*57718be8SEnji Cooper  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*57718be8SEnji Cooper  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*57718be8SEnji Cooper  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*57718be8SEnji Cooper  * POSSIBILITY OF SUCH DAMAGE.
30*57718be8SEnji Cooper  */
31*57718be8SEnji Cooper #include <sys/cdefs.h>
32*57718be8SEnji Cooper __RCSID("$NetBSD: t_nice.c,v 1.8 2012/03/18 07:00:51 jruoho Exp $");
33*57718be8SEnji Cooper 
34*57718be8SEnji Cooper #include <sys/resource.h>
35*57718be8SEnji Cooper #include <sys/wait.h>
36*57718be8SEnji Cooper 
37*57718be8SEnji Cooper #include <atf-c.h>
38*57718be8SEnji Cooper #include <errno.h>
39*57718be8SEnji Cooper #include <limits.h>
40*57718be8SEnji Cooper #include <pthread.h>
41*57718be8SEnji Cooper #include <stdlib.h>
42*57718be8SEnji Cooper #include <unistd.h>
43*57718be8SEnji Cooper 
44*57718be8SEnji Cooper static void	*threadfunc(void *);
45*57718be8SEnji Cooper 
46*57718be8SEnji Cooper static void *
47*57718be8SEnji Cooper threadfunc(void *arg)
48*57718be8SEnji Cooper {
49*57718be8SEnji Cooper 	int pri, val;
50*57718be8SEnji Cooper 
51*57718be8SEnji Cooper 	val = *(int *)arg;
52*57718be8SEnji Cooper 
53*57718be8SEnji Cooper 	errno = 0;
54*57718be8SEnji Cooper 	pri = getpriority(PRIO_PROCESS, 0);
55*57718be8SEnji Cooper 	ATF_REQUIRE(errno == 0);
56*57718be8SEnji Cooper 
57*57718be8SEnji Cooper 	if (pri != val)
58*57718be8SEnji Cooper 		atf_tc_fail("nice(3) value was not propagated to threads");
59*57718be8SEnji Cooper 
60*57718be8SEnji Cooper 	return NULL;
61*57718be8SEnji Cooper }
62*57718be8SEnji Cooper 
63*57718be8SEnji Cooper ATF_TC(nice_err);
64*57718be8SEnji Cooper ATF_TC_HEAD(nice_err, tc)
65*57718be8SEnji Cooper {
66*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr",
67*57718be8SEnji Cooper 	    "Test nice(3) for invalid parameters (PR lib/42587)");
68*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "require.user", "unprivileged");
69*57718be8SEnji Cooper }
70*57718be8SEnji Cooper 
71*57718be8SEnji Cooper ATF_TC_BODY(nice_err, tc)
72*57718be8SEnji Cooper {
73*57718be8SEnji Cooper 	int i;
74*57718be8SEnji Cooper 
75*57718be8SEnji Cooper 	/*
76*57718be8SEnji Cooper 	 * The call should fail with EPERM if the
77*57718be8SEnji Cooper 	 * supplied parameter is negative and the
78*57718be8SEnji Cooper 	 * caller does not have privileges.
79*57718be8SEnji Cooper 	 */
80*57718be8SEnji Cooper 	for (i = -20; i < 0; i++) {
81*57718be8SEnji Cooper 
82*57718be8SEnji Cooper 		errno = 0;
83*57718be8SEnji Cooper 
84*57718be8SEnji Cooper 		ATF_REQUIRE_ERRNO(EPERM, nice(i) == -1);
85*57718be8SEnji Cooper 	}
86*57718be8SEnji Cooper }
87*57718be8SEnji Cooper 
88*57718be8SEnji Cooper ATF_TC(nice_priority);
89*57718be8SEnji Cooper ATF_TC_HEAD(nice_priority, tc)
90*57718be8SEnji Cooper {
91*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "Test nice(3) vs. getpriority(2)");
92*57718be8SEnji Cooper }
93*57718be8SEnji Cooper 
94*57718be8SEnji Cooper ATF_TC_BODY(nice_priority, tc)
95*57718be8SEnji Cooper {
96*57718be8SEnji Cooper 	int i, pri, nic;
97*57718be8SEnji Cooper 	pid_t pid;
98*57718be8SEnji Cooper 	int sta;
99*57718be8SEnji Cooper 
100*57718be8SEnji Cooper 	for (i = 0; i <= 20; i++) {
101*57718be8SEnji Cooper 
102*57718be8SEnji Cooper 		nic = nice(i);
103*57718be8SEnji Cooper 		ATF_REQUIRE(nic != -1);
104*57718be8SEnji Cooper 
105*57718be8SEnji Cooper 		errno = 0;
106*57718be8SEnji Cooper 		pri = getpriority(PRIO_PROCESS, 0);
107*57718be8SEnji Cooper 		ATF_REQUIRE(errno == 0);
108*57718be8SEnji Cooper 
109*57718be8SEnji Cooper 		if (nic != pri)
110*57718be8SEnji Cooper 			atf_tc_fail("nice(3) and getpriority(2) conflict");
111*57718be8SEnji Cooper 
112*57718be8SEnji Cooper 		/*
113*57718be8SEnji Cooper 		 * Also verify that the nice(3) values
114*57718be8SEnji Cooper 		 * are inherited by child processes.
115*57718be8SEnji Cooper 		 */
116*57718be8SEnji Cooper 		pid = fork();
117*57718be8SEnji Cooper 		ATF_REQUIRE(pid >= 0);
118*57718be8SEnji Cooper 
119*57718be8SEnji Cooper 		if (pid == 0) {
120*57718be8SEnji Cooper 
121*57718be8SEnji Cooper 			errno = 0;
122*57718be8SEnji Cooper 			pri = getpriority(PRIO_PROCESS, 0);
123*57718be8SEnji Cooper 			ATF_REQUIRE(errno == 0);
124*57718be8SEnji Cooper 
125*57718be8SEnji Cooper 			if (nic != pri)
126*57718be8SEnji Cooper 				_exit(EXIT_FAILURE);
127*57718be8SEnji Cooper 
128*57718be8SEnji Cooper 			_exit(EXIT_SUCCESS);
129*57718be8SEnji Cooper 		}
130*57718be8SEnji Cooper 
131*57718be8SEnji Cooper 		(void)wait(&sta);
132*57718be8SEnji Cooper 
133*57718be8SEnji Cooper 		if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
134*57718be8SEnji Cooper 			atf_tc_fail("nice(3) value was not inherited");
135*57718be8SEnji Cooper 	}
136*57718be8SEnji Cooper }
137*57718be8SEnji Cooper 
138*57718be8SEnji Cooper ATF_TC(nice_root);
139*57718be8SEnji Cooper ATF_TC_HEAD(nice_root, tc)
140*57718be8SEnji Cooper {
141*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "Test that nice(3) works");
142*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "require.user", "root");
143*57718be8SEnji Cooper }
144*57718be8SEnji Cooper 
145*57718be8SEnji Cooper ATF_TC_BODY(nice_root, tc)
146*57718be8SEnji Cooper {
147*57718be8SEnji Cooper 	int i;
148*57718be8SEnji Cooper 
149*57718be8SEnji Cooper 	for (i = -20; i <= 20; i++) {
150*57718be8SEnji Cooper 
151*57718be8SEnji Cooper 		ATF_REQUIRE(nice(i) != -1);
152*57718be8SEnji Cooper 	}
153*57718be8SEnji Cooper }
154*57718be8SEnji Cooper 
155*57718be8SEnji Cooper ATF_TC(nice_thread);
156*57718be8SEnji Cooper ATF_TC_HEAD(nice_thread, tc)
157*57718be8SEnji Cooper {
158*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "Test nice(3) with threads");
159*57718be8SEnji Cooper }
160*57718be8SEnji Cooper 
161*57718be8SEnji Cooper ATF_TC_BODY(nice_thread, tc)
162*57718be8SEnji Cooper {
163*57718be8SEnji Cooper 	pthread_t tid[5];
164*57718be8SEnji Cooper 	int rv, val;
165*57718be8SEnji Cooper 	size_t i;
166*57718be8SEnji Cooper 
167*57718be8SEnji Cooper 	/*
168*57718be8SEnji Cooper 	 * Test that the scheduling priority is
169*57718be8SEnji Cooper 	 * propagated to all system scope threads.
170*57718be8SEnji Cooper 	 */
171*57718be8SEnji Cooper 	for (i = 0; i < __arraycount(tid); i++) {
172*57718be8SEnji Cooper 
173*57718be8SEnji Cooper 		val = nice(i);
174*57718be8SEnji Cooper 		ATF_REQUIRE(val != -1);
175*57718be8SEnji Cooper 
176*57718be8SEnji Cooper 		rv = pthread_create(&tid[i], NULL, threadfunc, &val);
177*57718be8SEnji Cooper 		ATF_REQUIRE(rv == 0);
178*57718be8SEnji Cooper 
179*57718be8SEnji Cooper 		rv = pthread_join(tid[i], NULL);
180*57718be8SEnji Cooper 		ATF_REQUIRE(rv == 0);
181*57718be8SEnji Cooper 	}
182*57718be8SEnji Cooper }
183*57718be8SEnji Cooper 
184*57718be8SEnji Cooper ATF_TP_ADD_TCS(tp)
185*57718be8SEnji Cooper {
186*57718be8SEnji Cooper 
187*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, nice_err);
188*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, nice_priority);
189*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, nice_root);
190*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, nice_thread);
191*57718be8SEnji Cooper 
192*57718be8SEnji Cooper 	return atf_no_error();
193*57718be8SEnji Cooper }
194