]> CyberLeo.Net >> Repos - FreeBSD/stable/10.git/blob - contrib/netbsd-tests/lib/libc/gen/posix_spawn/t_spawnattr.c
MFC r314450,r313439:
[FreeBSD/stable/10.git] / contrib / netbsd-tests / lib / libc / gen / posix_spawn / t_spawnattr.c
1 /* $NetBSD: t_spawnattr.c,v 1.1 2012/02/13 21:03:08 martin Exp $ */
2
3 /*-
4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Charles Zhang <charles@NetBSD.org> and
9  * Martin Husemann <martin@NetBSD.org>.
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 <atf-c.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <sched.h>
40 #include <signal.h>
41 #include <spawn.h>
42 #include <unistd.h>
43 #include <sys/wait.h>
44
45 static int get_different_scheduler(void);
46 static int get_different_priority(int scheduler);
47
48 static const int schedulers[] = {
49         SCHED_OTHER,
50         SCHED_FIFO,
51         SCHED_RR
52 };
53
54 static int
55 get_different_scheduler(void)
56 {
57         u_int i;
58         int scheduler;
59
60         /* get current schedule policy */
61         scheduler = sched_getscheduler(0);
62         for (i = 0; i < __arraycount(schedulers); i++) {
63                 if (schedulers[i] == scheduler)
64                         break;
65         }
66         ATF_REQUIRE_MSG(i < __arraycount(schedulers),
67             "Unknown current scheduler %d", scheduler);
68
69         /* new scheduler */
70         i++;
71         if (i >= __arraycount(schedulers))
72                 i = 0;
73         return schedulers[i];
74 }
75
76 static int
77 get_different_priority(int scheduler)
78 {
79         int max, min, new, priority;
80         struct sched_param param;
81
82         max = sched_get_priority_max(scheduler);
83         min = sched_get_priority_min(scheduler);
84
85         sched_getparam(0, &param);
86         priority = param.sched_priority;
87
88         /*
89          * Change numerical value of the priority, to ensure that it
90          * was set for the spawned child.
91          */
92         new = priority + 1;
93         if (new > max)
94                 new = min;
95         return new;
96 }
97
98 ATF_TC(t_spawnattr);
99
100 ATF_TC_HEAD(t_spawnattr, tc)
101 {
102         atf_tc_set_md_var(tc, "require.user", "root");
103         atf_tc_set_md_var(tc, "descr",
104             "Tests posix_spawn with scheduler attributes");
105 }
106
107 ATF_TC_BODY(t_spawnattr, tc)
108 {
109         int pid, scheduler, child_scheduler, priority, status, err, pfd[2];
110         char helper_arg[128];
111         char * const args[] = { __UNCONST("h_spawnattr"), helper_arg, NULL };
112         struct sched_param sp, child_sp;
113         sigset_t sig;
114         posix_spawnattr_t attr;
115         char helper[FILENAME_MAX];
116
117         /*
118          * create a pipe to controll the child
119          */
120         err = pipe(pfd);
121         ATF_REQUIRE_MSG(err == 0, "could not create pipe, errno %d", errno);
122         sprintf(helper_arg, "%d", pfd[0]);
123
124         posix_spawnattr_init(&attr);
125
126         scheduler = get_different_scheduler();
127         priority = get_different_priority(scheduler);
128         sp.sched_priority = priority;
129
130         sigemptyset(&sig);
131         sigaddset(&sig, SIGUSR1);
132
133         posix_spawnattr_setflags(&attr, POSIX_SPAWN_SETSCHEDULER |
134             POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETPGROUP |
135             POSIX_SPAWN_SETSIGMASK | POSIX_SPAWN_SETSIGDEF);
136         posix_spawnattr_setpgroup(&attr, 0);
137         posix_spawnattr_setschedparam(&attr, &sp);
138         posix_spawnattr_setschedpolicy(&attr, scheduler);
139         posix_spawnattr_setsigmask(&attr, &sig);
140         posix_spawnattr_setsigdefault(&attr, &sig);
141
142         sprintf(helper, "%s/h_spawnattr",
143             atf_tc_get_config_var(tc, "srcdir"));
144         err = posix_spawn(&pid, helper, NULL, &attr, args, NULL);
145         ATF_REQUIRE_MSG(err == 0, "error %d", err);
146
147         child_scheduler = sched_getscheduler(pid);
148         ATF_REQUIRE_MSG(scheduler == child_scheduler,
149             "scheduler = %d, child_scheduler = %d, pid %d, errno %d",
150             scheduler, child_scheduler, pid, errno);
151
152         sched_getparam(pid, &child_sp);
153         ATF_REQUIRE_MSG(child_sp.sched_priority == sp.sched_priority,
154             "priority is: %d, but we requested: %d",
155             child_sp.sched_priority, sp.sched_priority);
156
157         ATF_REQUIRE_MSG(pid == getpgid(pid), "child pid: %d, child pgid: %d",
158             pid, getpgid(pid));
159
160         /* ready, let child go */
161         write(pfd[1], "q", 1);
162         close(pfd[0]);
163         close(pfd[1]);
164
165         /* wait and check result from child */
166         waitpid(pid, &status, 0);
167         ATF_REQUIRE(WIFEXITED(status) && WEXITSTATUS(status) == EXIT_SUCCESS);
168
169         posix_spawnattr_destroy(&attr);
170 }
171
172 ATF_TP_ADD_TCS(tp)
173 {
174         ATF_TP_ADD_TC(tp, t_spawnattr);
175
176         return atf_no_error();
177 }