1/* $NetBSD: t_sig.c,v 1.3 2017/01/13 21:30:41 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 1.3 2017/01/13 21:30:41 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
55ATF_TC(sig);
56ATF_TC_HEAD(sig, tc)
57{
58	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_SIGNAL");
59}
60ATF_TC_BODY(sig, tc)
61{
62	struct timespec	timeout;
63#ifdef __NetBSD__
64	struct kfilter_mapping km;
65#endif
66	struct kevent event[1];
67#ifdef __NetBSD__
68	char namebuf[32];
69#endif
70	pid_t pid, child;
71	int kq, n, num, status;
72
73	pid = getpid();
74	(void)printf("my pid: %d\n", pid);
75
76	/* fork a child to send signals */
77	RL(child = fork());
78	if (child == 0) {
79		int i;
80		(void)sleep(2);
81		for(i = 0; i < NSIGNALS; ++i) {
82			(void)kill(pid, SIGUSR1);
83			(void)sleep(2);
84		}
85		_exit(0);
86		/* NOTREACHED */
87	}
88
89	RL(kq = kqueue());
90
91#ifdef __NetBSD__
92	(void)strlcpy(namebuf, "EVFILT_SIGNAL", sizeof(namebuf));
93	km.name = namebuf;
94	RL(ioctl(kq, KFILTER_BYNAME, &km));
95	(void)printf("got %d as filter number for `%s'.\n", km.filter, km.name);
96#endif
97
98	/* ignore the signal to avoid taking it for real */
99	REQUIRE_LIBC(signal(SIGUSR1, SIG_IGN), SIG_ERR);
100
101	event[0].ident = SIGUSR1;
102#ifdef __NetBSD__
103	event[0].filter = km.filter;
104#else
105	event[0].filter = EVFILT_SIGNAL;
106#endif
107	event[0].flags = EV_ADD | EV_ENABLE;
108
109	RL(kevent(kq, event, 1, NULL, 0, NULL));
110
111	(void)sleep(1);
112
113	timeout.tv_sec = 1;
114	timeout.tv_nsec = 0;
115
116	for (num = 0; num < NSIGNALS; num += n) {
117		struct timeval then, now, diff;
118
119		RL(gettimeofday(&then, NULL));
120		RL(n = kevent(kq, NULL, 0, event, 1, &timeout));
121		RL(gettimeofday(&now, NULL));
122		timersub(&now, &then, &diff);
123
124		(void)printf("sig: kevent returned %d in %lld.%06ld\n",
125		    n, (long long)diff.tv_sec, (long)diff.tv_usec);
126
127		if (n == 0)
128			continue;
129
130#ifdef __FreeBSD__
131		(void)printf("sig: kevent flags: 0x%x, data: %" PRIdPTR " (# "
132#else
133		(void)printf("sig: kevent flags: 0x%x, data: %" PRId64 " (# "
134#endif
135		    "times signal posted)\n", event[0].flags, event[0].data);
136	}
137
138	(void)waitpid(child, &status, 0);
139	(void)printf("sig: finished successfully\n");
140}
141
142ATF_TP_ADD_TCS(tp)
143{
144	ATF_TP_ADD_TC(tp, sig);
145
146	return atf_no_error();
147}
148