tests/lib/libpthread/t_siglongjmp.c

   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@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 }