1 /* $NetBSD: t_sig.c,v 1.2 2010/11/03 16:10:20 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Luke Mewburn and Jaromir Dolecek.
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
32 #include <sys/cdefs.h>
33 __COPYRIGHT("@(#) Copyright (c) 2008\
34 The NetBSD Foundation, inc. All rights reserved.");
35 __RCSID("$NetBSD: t_sig.c,v 1.2 2010/11/03 16:10:20 christos Exp $");
36
37 #include <sys/event.h>
38 #include <sys/ioctl.h>
39 #include <sys/param.h>
40 #include <sys/time.h>
41 #include <sys/wait.h>
42
43 #include <inttypes.h>
44 #include <signal.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <unistd.h>
48
49 #include <atf-c.h>
50
51 #include "../../h_macros.h"
52
53 #define NSIGNALS 5
54
55 ATF_TC(sig);
ATF_TC_HEAD(sig,tc)56 ATF_TC_HEAD(sig, tc)
57 {
58 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_SIGNAL");
59 }
ATF_TC_BODY(sig,tc)60 ATF_TC_BODY(sig, tc)
61 {
62 struct timespec timeout;
63 struct kfilter_mapping km;
64 struct kevent event[1];
65 char namebuf[32];
66 pid_t pid, child;
67 int kq, n, num, status;
68
69 pid = getpid();
70 (void)printf("my pid: %d\n", pid);
71
72 /* fork a child to send signals */
73 RL(child = fork());
74 if (child == 0) {
75 int i;
76 (void)sleep(2);
77 for(i = 0; i < NSIGNALS; ++i) {
78 (void)kill(pid, SIGUSR1);
79 (void)sleep(2);
80 }
81 _exit(0);
82 /* NOTREACHED */
83 }
84
85 RL(kq = kqueue());
86
87 (void)strlcpy(namebuf, "EVFILT_SIGNAL", sizeof(namebuf));
88 km.name = namebuf;
89 RL(ioctl(kq, KFILTER_BYNAME, &km));
90 (void)printf("got %d as filter number for `%s'.\n", km.filter, km.name);
91
92 /* ignore the signal to avoid taking it for real */
93 REQUIRE_LIBC(signal(SIGUSR1, SIG_IGN), SIG_ERR);
94
95 event[0].ident = SIGUSR1;
96 event[0].filter = km.filter;
97 event[0].flags = EV_ADD | EV_ENABLE;
98
99 RL(kevent(kq, event, 1, NULL, 0, NULL));
100
101 (void)sleep(1);
102
103 timeout.tv_sec = 1;
104 timeout.tv_nsec = 0;
105
106 for (num = 0; num < NSIGNALS; num += n) {
107 struct timeval then, now, diff;
108
109 RL(gettimeofday(&then, NULL));
110 RL(n = kevent(kq, NULL, 0, event, 1, &timeout));
111 RL(gettimeofday(&now, NULL));
112 timersub(&now, &then, &diff);
113
114 (void)printf("sig: kevent returned %d in %lld.%06ld\n",
115 n, (long long)diff.tv_sec, (long)diff.tv_usec);
116
117 if (n == 0)
118 continue;
119
120 (void)printf("sig: kevent flags: 0x%x, data: %" PRId64 " (# "
121 "times signal posted)\n", event[0].flags, event[0].data);
122 }
123
124 (void)waitpid(child, &status, 0);
125 (void)printf("sig: finished successfully\n");
126 }
127
ATF_TP_ADD_TCS(tp)128 ATF_TP_ADD_TCS(tp)
129 {
130 ATF_TP_ADD_TC(tp, sig);
131
132 return atf_no_error();
133 }
134