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 #ifdef __FreeBSD__ 38 #include <sys/types.h> 39 #endif 40 #include <sys/event.h> 41 #include <sys/ioctl.h> 42 #include <sys/param.h> 43 #include <sys/time.h> 44 #include <sys/wait.h> 45 46 #include <inttypes.h> 47 #include <signal.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 52 #include <atf-c.h> 53 54 #include "../../h_macros.h" 55 56 #define NSIGNALS 5 57 58 ATF_TC(sig); 59 ATF_TC_HEAD(sig, tc) 60 { 61 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_SIGNAL"); 62 } 63 ATF_TC_BODY(sig, tc) 64 { 65 struct timespec timeout; 66 #ifdef __NetBSD__ 67 struct kfilter_mapping km; 68 #endif 69 struct kevent event[1]; 70 #ifdef __NetBSD__ 71 char namebuf[32]; 72 #endif 73 pid_t pid, child; 74 int kq, n, num, status; 75 76 pid = getpid(); 77 (void)printf("my pid: %d\n", pid); 78 79 /* fork a child to send signals */ 80 RL(child = fork()); 81 if (child == 0) { 82 int i; 83 (void)sleep(2); 84 for(i = 0; i < NSIGNALS; ++i) { 85 (void)kill(pid, SIGUSR1); 86 (void)sleep(2); 87 } 88 _exit(0); 89 /* NOTREACHED */ 90 } 91 92 RL(kq = kqueue()); 93 94 #ifdef __NetBSD__ 95 (void)strlcpy(namebuf, "EVFILT_SIGNAL", sizeof(namebuf)); 96 km.name = namebuf; 97 RL(ioctl(kq, KFILTER_BYNAME, &km)); 98 (void)printf("got %d as filter number for `%s'.\n", km.filter, km.name); 99 #endif 100 101 /* ignore the signal to avoid taking it for real */ 102 REQUIRE_LIBC(signal(SIGUSR1, SIG_IGN), SIG_ERR); 103 104 event[0].ident = SIGUSR1; 105 #ifdef __NetBSD__ 106 event[0].filter = km.filter; 107 #else 108 event[0].filter = EVFILT_SIGNAL; 109 #endif 110 event[0].flags = EV_ADD | EV_ENABLE; 111 112 RL(kevent(kq, event, 1, NULL, 0, NULL)); 113 114 (void)sleep(1); 115 116 timeout.tv_sec = 1; 117 timeout.tv_nsec = 0; 118 119 for (num = 0; num < NSIGNALS; num += n) { 120 struct timeval then, now, diff; 121 122 RL(gettimeofday(&then, NULL)); 123 RL(n = kevent(kq, NULL, 0, event, 1, &timeout)); 124 RL(gettimeofday(&now, NULL)); 125 timersub(&now, &then, &diff); 126 127 (void)printf("sig: kevent returned %d in %lld.%06ld\n", 128 n, (long long)diff.tv_sec, (long)diff.tv_usec); 129 130 if (n == 0) 131 continue; 132 133 #ifdef __FreeBSD__ 134 (void)printf("sig: kevent flags: 0x%x, data: %" PRIdPTR " (# " 135 #else 136 (void)printf("sig: kevent flags: 0x%x, data: %" PRId64 " (# " 137 #endif 138 "times signal posted)\n", event[0].flags, event[0].data); 139 } 140 141 (void)waitpid(child, &status, 0); 142 (void)printf("sig: finished successfully\n"); 143 } 144 145 ATF_TP_ADD_TCS(tp) 146 { 147 ATF_TP_ADD_TC(tp, sig); 148 149 return atf_no_error(); 150 } 151