/*      $NetBSD: t_raise.c,v 1.6 2016/11/03 22:08:31 kamil Exp $ */

/*-
 * Copyright (c) 2011 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jukka Ruohonen.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_raise.c,v 1.6 2016/11/03 22:08:31 kamil Exp $");

#include <atf-c.h>

#include <signal.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

static bool     fail;
static int      count;
static void     handler_err(int);
static void     handler_ret(int);
static void     handler_stress(int);
static int      sig[] = { SIGALRM, SIGIO, SIGUSR1, SIGUSR2, SIGPWR };

static void
handler_stress(int signo)
{
        count++;
}

static void
handler_err(int signo)
{
        size_t i;

        for (i = 0; i < __arraycount(sig); i++) {

                if (sig[i] == signo) {
                        fail = false;
                        break;
                }
        }
}

static void
handler_ret(int signo)
{

        (void)sleep(1);

        fail = false;
}

ATF_TC(raise_err);
ATF_TC_HEAD(raise_err, tc)
{
        atf_tc_set_md_var(tc, "descr", "Test raise(3) for invalid parameters");
}

ATF_TC_BODY(raise_err, tc)
{
        int i = 0;

        while (i < 10) {

                ATF_REQUIRE(raise(10240 + i) == -1);

                i++;
        }
}

ATF_TC(raise_ret);
ATF_TC_HEAD(raise_ret, tc)
{
        atf_tc_set_md_var(tc, "descr", "Test return order of raise(3)");
}

ATF_TC_BODY(raise_ret, tc)
{
        struct sigaction sa;

        fail = true;

        sa.sa_flags = 0;
        sa.sa_handler = handler_ret;

        /*
         * Verify that raise(3) does not return
         * before the signal handler returns.
         */
        ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
        ATF_REQUIRE(sigaction(SIGUSR1, &sa, 0) == 0);
        ATF_REQUIRE(raise(SIGUSR1) == 0);

        if (fail != false)
                atf_tc_fail("raise(3) returned before signal handler");
}

ATF_TC(raise_sig);
ATF_TC_HEAD(raise_sig, tc)
{
        atf_tc_set_md_var(tc, "descr", "A basic test of raise(3)");
}

ATF_TC_BODY(raise_sig, tc)
{
        struct timespec tv, tr;
        struct sigaction sa;
        size_t i;

        for (i = 0; i < __arraycount(sig); i++) {

                (void)memset(&sa, 0, sizeof(struct sigaction));

                fail = true;

                tv.tv_sec = 0;
                tv.tv_nsec = 2;

                sa.sa_flags = 0;
                sa.sa_handler = handler_err;

                ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
                ATF_REQUIRE(sigaction(sig[i], &sa, 0) == 0);

                ATF_REQUIRE(raise(sig[i]) == 0);
                ATF_REQUIRE(nanosleep(&tv, &tr) == 0);

                if (fail != false)
                        atf_tc_fail("raise(3) did not raise a signal");
        }
}

ATF_TC(raise_stress);
ATF_TC_HEAD(raise_stress, tc)
{
        atf_tc_set_md_var(tc, "descr", "A basic stress test with raise(3)");
}

ATF_TC_BODY(raise_stress, tc)
{
        static const int maxiter = 1000 * 10;
        struct sigaction sa;
        int i;

        sa.sa_flags = 0;
        sa.sa_handler = handler_stress;

        ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
        ATF_REQUIRE(sigaction(SIGUSR1, &sa, 0) == 0);

        for (count = i = 0; i < maxiter; i++)
                (void)raise(SIGUSR1);

        if (count != maxiter)
                atf_tc_fail("not all signals were caught");
}

ATF_TP_ADD_TCS(tp)
{
        ATF_TP_ADD_TC(tp, raise_err);
        ATF_TP_ADD_TC(tp, raise_ret);
        ATF_TP_ADD_TC(tp, raise_sig);
        ATF_TP_ADD_TC(tp, raise_stress);

        return atf_no_error();
}