1272343Sngie/* $NetBSD: t_sigmask.c,v 1.3 2013/10/19 17:45:01 christos Exp $ */ 2272343Sngie 3272343Sngie/* 4272343Sngie * Copyright (c) 2008, 2010 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * Redistribution and use in source and binary forms, with or without 8272343Sngie * modification, are permitted provided that the following conditions 9272343Sngie * are met: 10272343Sngie * 1. Redistributions of source code must retain the above copyright 11272343Sngie * notice, this list of conditions and the following disclaimer. 12272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 13272343Sngie * notice, this list of conditions and the following disclaimer in the 14272343Sngie * documentation and/or other materials provided with the distribution. 15272343Sngie * 16272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26272343Sngie * POSSIBILITY OF SUCH DAMAGE. 27272343Sngie */ 28272343Sngie 29272343Sngie#include <sys/cdefs.h> 30272343Sngie__COPYRIGHT("@(#) Copyright (c) 2008, 2010\ 31272343Sngie The NetBSD Foundation, inc. All rights reserved."); 32272343Sngie__RCSID("$NetBSD: t_sigmask.c,v 1.3 2013/10/19 17:45:01 christos Exp $"); 33272343Sngie 34272343Sngie/* 35272343Sngie * Regression test for pthread_sigmask when SA upcalls aren't started yet. 36272343Sngie * 37272343Sngie * Written by Christian Limpach <cl@NetBSD.org>, December 2003. 38272343Sngie * Public domain. 39272343Sngie */ 40272343Sngie 41272343Sngie#include <errno.h> 42272343Sngie#include <pthread.h> 43272343Sngie#include <signal.h> 44272343Sngie#include <stdio.h> 45272343Sngie#include <unistd.h> 46272343Sngie 47272343Sngie#include <sys/resource.h> 48272343Sngie 49272343Sngie#include <atf-c.h> 50272343Sngie 51272343Sngie#include "h_common.h" 52272343Sngie 53272343Sngiestatic volatile sig_atomic_t flag; 54272343Sngiestatic volatile sig_atomic_t flag2; 55272343Sngie 56272343Sngiestatic volatile pthread_t thr_usr1; 57272343Sngiestatic volatile pthread_t thr_usr2; 58272343Sngie 59272343Sngiestatic sig_atomic_t count = 0; 60272343Sngie 61272343SngieATF_TC(upcalls_not_started); 62272343SngieATF_TC_HEAD(upcalls_not_started, tc) 63272343Sngie{ 64272343Sngie atf_tc_set_md_var(tc, "descr", "Checks pthread_sigmask when SA upcalls " 65272343Sngie "aren't started yet"); 66272343Sngie} 67272343SngieATF_TC_BODY(upcalls_not_started, tc) 68272343Sngie{ 69272343Sngie sigset_t nset; 70272343Sngie struct rlimit rlim; 71272343Sngie 72272343Sngie rlim.rlim_cur = rlim.rlim_max = 0; 73272343Sngie (void) setrlimit(RLIMIT_CORE, &rlim); 74272343Sngie 75272343Sngie sigemptyset(&nset); 76272343Sngie sigaddset(&nset, SIGFPE); 77272343Sngie pthread_sigmask(SIG_BLOCK, &nset, NULL); 78272343Sngie 79272343Sngie kill(getpid(), SIGFPE); 80272343Sngie} 81272343Sngie 82272343Sngiestatic void 83272343Sngieupcalls_not_started_handler1(int sig, siginfo_t *info, void *ctx) 84272343Sngie{ 85272343Sngie 86272343Sngie kill(getpid(), SIGUSR2); 87272343Sngie /* 88272343Sngie * If the mask is properly set, SIGUSR2 will not be handled 89272343Sngie * until this handler returns. 90272343Sngie */ 91272343Sngie flag = 1; 92272343Sngie} 93272343Sngie 94272343Sngiestatic void 95272343Sngieupcalls_not_started_handler2(int sig, siginfo_t *info, void *ctx) 96272343Sngie{ 97272343Sngie if (flag == 1) 98272343Sngie flag = 2; 99272343Sngie} 100272343Sngie 101272343SngieATF_TC(before_threads); 102272343SngieATF_TC_HEAD(before_threads, tc) 103272343Sngie{ 104272343Sngie atf_tc_set_md_var(tc, "descr", "Checks that signal masks are respected " 105272343Sngie "before threads are started"); 106272343Sngie} 107272343SngieATF_TC_BODY(before_threads, tc) 108272343Sngie{ 109272343Sngie struct sigaction act; 110272343Sngie 111272343Sngie act.sa_sigaction = upcalls_not_started_handler1; 112272343Sngie sigemptyset(&act.sa_mask); 113272343Sngie sigaddset(&act.sa_mask, SIGUSR2); 114272343Sngie act.sa_flags = SA_SIGINFO; 115272343Sngie 116272343Sngie ATF_REQUIRE_EQ(sigaction(SIGUSR1, &act, NULL), 0); 117272343Sngie 118272343Sngie act.sa_sigaction = upcalls_not_started_handler2; 119272343Sngie sigemptyset(&act.sa_mask); 120272343Sngie act.sa_flags = SA_SIGINFO; 121272343Sngie (void)sigaction(SIGUSR2, &act, NULL); 122272343Sngie 123272343Sngie kill(getpid(), SIGUSR1); 124272343Sngie 125272343Sngie ATF_REQUIRE_EQ(flag, 2); 126272343Sngie printf("Success: Both handlers ran in order\n"); 127272343Sngie} 128272343Sngie 129272343Sngiestatic void 130272343Sngierespected_while_running_handler1(int sig, siginfo_t *info, void *ctx) 131272343Sngie{ 132272343Sngie 133272343Sngie kill(getpid(), SIGUSR2); 134272343Sngie /* 135272343Sngie * If the mask is properly set, SIGUSR2 will not be handled 136272343Sngie * by the current thread until this handler returns. 137272343Sngie */ 138272343Sngie flag = 1; 139272343Sngie thr_usr1 = pthread_self(); 140272343Sngie} 141272343Sngie 142272343Sngiestatic void 143272343Sngierespected_while_running_handler2(int sig, siginfo_t *info, void *ctx) 144272343Sngie{ 145272343Sngie if (flag == 1) 146272343Sngie flag = 2; 147272343Sngie flag2 = 1; 148272343Sngie thr_usr2 = pthread_self(); 149272343Sngie} 150272343Sngie 151272343Sngiestatic void * 152272343Sngierespected_while_running_threadroutine(void *arg) 153272343Sngie{ 154272343Sngie 155272343Sngie kill(getpid(), SIGUSR1); 156272343Sngie sleep(1); 157272343Sngie 158272343Sngie if (flag == 2) 159272343Sngie printf("Success: Both handlers ran in order\n"); 160272343Sngie else if (flag == 1 && flag2 == 1 && thr_usr1 != thr_usr2) 161272343Sngie printf("Success: Handlers were invoked by different threads\n"); 162272343Sngie else { 163272343Sngie printf("Failure: flag=%d, flag2=%d, thr1=%p, thr2=%p\n", 164272343Sngie (int)flag, (int)flag2, (void *)thr_usr1, (void *)thr_usr2); 165272343Sngie atf_tc_fail("failure"); 166272343Sngie } 167272343Sngie 168272343Sngie return NULL; 169272343Sngie} 170272343Sngie 171272343SngieATF_TC(respected_while_running); 172272343SngieATF_TC_HEAD(respected_while_running, tc) 173272343Sngie{ 174272343Sngie atf_tc_set_md_var(tc, "descr", "Checks that signal masks are respected " 175272343Sngie "while threads are running"); 176272343Sngie} 177272343SngieATF_TC_BODY(respected_while_running, tc) 178272343Sngie{ 179272343Sngie struct sigaction act; 180272343Sngie pthread_t thread; 181272343Sngie 182272343Sngie act.sa_sigaction = respected_while_running_handler1; 183272343Sngie sigemptyset(&act.sa_mask); 184272343Sngie sigaddset(&act.sa_mask, SIGUSR2); 185272343Sngie act.sa_flags = SA_SIGINFO; 186272343Sngie 187272343Sngie ATF_REQUIRE_EQ(sigaction(SIGUSR1, &act, NULL), 0); 188272343Sngie 189272343Sngie act.sa_sigaction = respected_while_running_handler2; 190272343Sngie sigemptyset(&act.sa_mask); 191272343Sngie act.sa_flags = SA_SIGINFO; 192272343Sngie (void)sigaction(SIGUSR2, &act, NULL); 193272343Sngie 194272343Sngie PTHREAD_REQUIRE(pthread_create(&thread, NULL, 195272343Sngie respected_while_running_threadroutine, NULL)); 196272343Sngie PTHREAD_REQUIRE(pthread_join(thread, NULL)); 197272343Sngie} 198272343Sngie 199272343Sngiestatic void 200272343Sngieincorrect_mask_bug_handler(int sig) 201272343Sngie{ 202272343Sngie count++; 203272343Sngie} 204272343Sngie 205272343Sngiestatic void * 206272343Sngieincorrect_mask_bug_sleeper(void* arg) 207272343Sngie{ 208272343Sngie int i; 209272343Sngie for (i = 0; i < 10; i++) 210272343Sngie sleep(1); 211272343Sngie 212272343Sngie atf_tc_fail("sleeper"); 213272343Sngie} 214272343Sngie 215272343SngieATF_TC(incorrect_mask_bug); 216272343SngieATF_TC_HEAD(incorrect_mask_bug, tc) 217272343Sngie{ 218272343Sngie atf_tc_set_md_var(tc, "descr", "Checks for bug in libpthread where " 219272343Sngie "incorrect signal mask was used"); 220272343Sngie} 221272343SngieATF_TC_BODY(incorrect_mask_bug, tc) 222272343Sngie{ 223272343Sngie pthread_t id; 224272343Sngie struct sigaction act; 225272343Sngie 226272343Sngie act.sa_sigaction = NULL; 227272343Sngie sigemptyset(&act.sa_mask); 228272343Sngie act.sa_flags = 0; 229272343Sngie act.sa_handler = incorrect_mask_bug_handler; 230272343Sngie 231272343Sngie ATF_REQUIRE_EQ_MSG(sigaction(SIGALRM, &act, NULL), 0, "%s", 232272343Sngie strerror(errno)); 233272343Sngie 234272343Sngie sigaddset(&act.sa_mask, SIGALRM); 235272343Sngie PTHREAD_REQUIRE(pthread_sigmask(SIG_SETMASK, &act.sa_mask, NULL)); 236272343Sngie 237272343Sngie PTHREAD_REQUIRE(pthread_create(&id, NULL, incorrect_mask_bug_sleeper, 238272343Sngie NULL)); 239272343Sngie sleep(1); 240272343Sngie 241272343Sngie sigemptyset(&act.sa_mask); 242272343Sngie PTHREAD_REQUIRE(pthread_sigmask(SIG_SETMASK, &act.sa_mask, NULL)); 243272343Sngie 244272343Sngie for (;;) { 245272343Sngie alarm(1); 246272343Sngie if (select(1, NULL, NULL, NULL, NULL) == -1 && errno == EINTR) 247272343Sngie if (count == 2) 248272343Sngie return; 249272343Sngie } 250272343Sngie} 251272343Sngie 252272343SngieATF_TP_ADD_TCS(tp) 253272343Sngie{ 254272343Sngie 255272343Sngie ATF_TP_ADD_TC(tp, upcalls_not_started); 256272343Sngie ATF_TP_ADD_TC(tp, before_threads); 257272343Sngie ATF_TP_ADD_TC(tp, respected_while_running); 258272343Sngie ATF_TP_ADD_TC(tp, incorrect_mask_bug); 259272343Sngie 260272343Sngie return atf_no_error(); 261272343Sngie} 262