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 55 ATF_TC(sig); 56 ATF_TC_HEAD(sig, tc) 57 { 58 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_SIGNAL"); 59 } 60 ATF_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 (void)printf("sig: kevent flags: 0x%x, data: %" PRId64 " (# " 131 "times signal posted)\n", event[0].flags, event[0].data); 132 } 133 134 (void)waitpid(child, &status, 0); 135 (void)printf("sig: finished successfully\n"); 136 } 137 138 ATF_TP_ADD_TCS(tp) 139 { 140 ATF_TP_ADD_TC(tp, sig); 141 142 return atf_no_error(); 143 } 144