minix/tests/dev/sysmon/t_swwdog.c

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/* $NetBSD: t_swwdog.c,v 1.5 2011/06/26 12:14:59 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 */
_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();
}