/*      $NetBSD: t_swwdog.c,v 1.7 2017/01/13 21:30:39 christos Exp $    */

/*
* Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
*
* 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 AUTHOR ``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 AUTHOR 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/types.h>
#include <sys/wait.h>
#include <sys/wdog.h>

#include <assert.h>
#include <atf-c.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>

#include <rump/rump.h>
#include <rump/rump_syscalls.h>

#include "h_macros.h"

static volatile sig_atomic_t tcount;

static void
sigcount(int sig)
{

       assert(sig == SIGUSR1);
       tcount++;
}

/*
* Since we are testing for swwdog's ability to reboot/panic, we need
* to fork and monitor the exit status from the parent and report
* something sensible back to atf.
*/
static int
testbody(int max)
{
       char wname[WDOG_NAMESIZE];
       struct wdog_conf wc;
       struct wdog_mode wm;
       pid_t p1, p2;
       int status;
       int fd;

       signal(SIGUSR1, sigcount);

       switch ((p1 = fork())) {
       case 0:
               break;
       case -1:
               atf_tc_fail_errno("fork");
               break;
       default:
               p2 = wait(&status);
               ATF_REQUIRE_EQ(p1, p2);
               ATF_REQUIRE_EQ(tcount, max);
               return status;
       }

       rump_init();

       fd = rump_sys_open("/dev/watchdog", O_RDWR);
       if (fd == -1)
               err(1, "open watchdog");

       wc.wc_count = 1;
       wc.wc_names = wname;

       if (rump_sys_ioctl(fd, WDOGIOC_GWDOGS, &wc) == -1)
               err(1, "can't fetch watchdog names");

       if (wc.wc_count) {
               assert(wc.wc_count == 1);

               strlcpy(wm.wm_name, wc.wc_names, sizeof(wm.wm_name));
               wm.wm_mode = WDOG_MODE_ETICKLE;
               wm.wm_period = 1;
               if (rump_sys_ioctl(fd, WDOGIOC_SMODE, &wm) == -1)
                       atf_tc_fail_errno("failed to set tickle");

               usleep(400000);
               if (max == 1)
                       rump_sys_ioctl(fd, WDOGIOC_TICKLE);
               else {
                       wm.wm_mode = WDOG_MODE_DISARMED;
                       rump_sys_ioctl(fd, WDOGIOC_SMODE, &wm);
               }
               kill(getppid(), SIGUSR1);

               sleep(2);
               printf("staying alive\n");
               kill(getppid(), SIGUSR1);
               _exit(2);
       }
       /* fail */
       printf("no watchdog registered!\n");
       _exit(1);
}

ATF_TC(reboot);
ATF_TC_HEAD(reboot, tc)
{

       atf_tc_set_md_var(tc, "descr", "check swwdog reboot capability");
}

ATF_TC_BODY(reboot, tc)
{
       extern bool rumpns_swwdog_reboot;
       int status;

       /* XXX: should use sysctl */
       rumpns_swwdog_reboot = true;
       status = testbody(1);

       ATF_REQUIRE(WIFEXITED(status));
       ATF_REQUIRE_EQ(WEXITSTATUS(status), 0);
}

ATF_TC(panic);
ATF_TC_HEAD(panic, tc)
{

       atf_tc_set_md_var(tc, "descr", "check swwdog panic capability");
}

ATF_TC_BODY(panic, tc)
{
       extern bool rumpns_swwdog_reboot;
       int status;

       /* XXX: should use sysctl */
       rumpns_swwdog_reboot = false;
       status = testbody(1);

       ATF_REQUIRE(WIFSIGNALED(status));
       ATF_REQUIRE_EQ(WTERMSIG(status), SIGABRT);
}

ATF_TC(disarm);
ATF_TC_HEAD(disarm, tc)
{

       atf_tc_set_md_var(tc, "descr", "check swwdog disarm capability");
}

ATF_TC_BODY(disarm, tc)
{
       int status;

       status = testbody(2);

       ATF_REQUIRE(WIFEXITED(status));
       ATF_REQUIRE_EQ(WEXITSTATUS(status), 2);
}

ATF_TP_ADD_TCS(tp)
{

       ATF_TP_ADD_TC(tp, panic);
       ATF_TP_ADD_TC(tp, reboot);
       ATF_TP_ADD_TC(tp, disarm);

       return atf_no_error();
}