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      1 /* $NetBSD: t_siglongjmp.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __COPYRIGHT("@(#) Copyright (c) 2008\
     31  The NetBSD Foundation, inc. All rights reserved.");
     32 __RCSID("$NetBSD: t_siglongjmp.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $");
     33 
     34 /*
     35  * Regression test for siglongjmp out of a signal handler back into
     36  * its thread.
     37  *
     38  * Written by Christian Limpach <cl (at) NetBSD.org>, December 2003.
     39  * Public domain.
     40  */
     41 
     42 #include <sys/resource.h>
     43 
     44 #include <pthread.h>
     45 #include <setjmp.h>
     46 #include <signal.h>
     47 #include <unistd.h>
     48 
     49 #include <atf-c.h>
     50 
     51 #include "h_common.h"
     52 
     53 static sigjmp_buf env;
     54 
     55 static void *
     56 thread(void *arg)
     57 {
     58 	return NULL;
     59 }
     60 
     61 static void
     62 handler(int sig, siginfo_t *info, void *ctx)
     63 {
     64 	siglongjmp(env, 1);
     65 }
     66 
     67 ATF_TC(siglongjmp1);
     68 ATF_TC_HEAD(siglongjmp1, tc)
     69 {
     70 	atf_tc_set_md_var(tc, "descr",
     71 		"Checks siglongjmp() out of a signal handler back into its thread");
     72 }
     73 ATF_TC_BODY(siglongjmp1, tc)
     74 {
     75 	pthread_t t;
     76 	sigset_t nset;
     77 	struct rlimit rlim;
     78 	struct sigaction act;
     79 
     80 	rlim.rlim_cur = rlim.rlim_max = 0;
     81 	(void)setrlimit(RLIMIT_CORE, &rlim);
     82 
     83 	PTHREAD_REQUIRE(pthread_create(&t, NULL, thread, NULL));
     84 
     85 	sigemptyset(&nset);
     86 	sigaddset(&nset, SIGUSR1);
     87 	PTHREAD_REQUIRE(pthread_sigmask(SIG_SETMASK, &nset, NULL));
     88 
     89 	act.sa_sigaction = handler;
     90 	sigemptyset(&act.sa_mask);
     91 	sigaddset(&act.sa_mask, SIGUSR2);
     92 	act.sa_flags = 0;
     93 	sigaction(SIGSEGV, &act, NULL);
     94 
     95 	ATF_REQUIRE_EQ(sigsetjmp(env, 1), 0);
     96 
     97 	PTHREAD_REQUIRE(pthread_sigmask(0, NULL, &nset));
     98 
     99 	ATF_REQUIRE_EQ_MSG(sigismember(&nset, SIGSEGV), 0, "SIGSEGV set");
    100 	ATF_REQUIRE_EQ_MSG(sigismember(&nset, SIGUSR2), 0, "SIGUSR2 set");
    101 	ATF_REQUIRE_MSG(sigismember(&nset, SIGUSR1), "SIGUSR1 not set");
    102 }
    103 
    104 ATF_TP_ADD_TCS(tp)
    105 {
    106 	ATF_TP_ADD_TC(tp, siglongjmp1);
    107 
    108 	return atf_no_error();
    109 }
    110