tests/dev/sysmon/t_swwdog.c

   1 /*      $NetBSD: t_swwdog.c,v 1.6 2015/04/23 04:49:37 pgoyette Exp $    */
   2
   3 /*
   4  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/types.h>
  29 #include <sys/wait.h>
  30 #include <sys/wdog.h>
  31
  32 #include <assert.h>
  33 #include <atf-c.h>
  34 #include <err.h>
  35 #include <errno.h>
  36 #include <fcntl.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41 #include <signal.h>
  42
  43 #include <rump/rump.h>
  44 #include <rump/rump_syscalls.h>
  45
  46 #include "../../h_macros.h"
  47
  48 static volatile sig_atomic_t tcount;
  49
  50 static void
  51 sigcount(int sig)
  52 {
  53
  54         assert(sig == SIGUSR1);
  55         tcount++;
  56 }
  57
  58 /*
  59  * Since we are testing for swwdog's ability to reboot/panic, we need
  60  * to fork and monitor the exit status from the parent and report
  61  * something sensible back to atf.
  62  */
  63 static int
  64 testbody(int max)
  65 {
  66         char wname[WDOG_NAMESIZE];
  67         struct wdog_conf wc;
  68         struct wdog_mode wm;
  69         pid_t p1, p2;
  70         int status;
  71         int fd;
  72
  73         signal(SIGUSR1, sigcount);
  74
  75         switch ((p1 = fork())) {
  76         case 0:
  77                 break;
  78         case -1:
  79                 atf_tc_fail_errno("fork");
  80                 break;
  81         default:
  82                 p2 = wait(&status);
  83                 ATF_REQUIRE_EQ(p1, p2);
  84                 ATF_REQUIRE_EQ(tcount, max);
  85                 return status;
  86         }
  87
  88         rump_init();
  89
  90         fd = rump_sys_open("/dev/watchdog", O_RDWR);
  91         if (fd == -1)
  92                 err(1, "open watchdog");
  93
  94         wc.wc_count = 1;
  95         wc.wc_names = wname;
  96
  97         if (rump_sys_ioctl(fd, WDOGIOC_GWDOGS, &wc) == -1)
  98                 err(1, "can't fetch watchdog names");
  99
 100         if (wc.wc_count) {
 101                 assert(wc.wc_count == 1);
 102
 103                 strlcpy(wm.wm_name, wc.wc_names, sizeof(wm.wm_name));
 104                 wm.wm_mode = WDOG_MODE_ETICKLE;
 105                 wm.wm_period = 1;
 106                 if (rump_sys_ioctl(fd, WDOGIOC_SMODE, &wm) == -1)
 107                         atf_tc_fail_errno("failed to set tickle");
 108
 109                 usleep(400000);
 110                 if (max == 1)
 111                         rump_sys_ioctl(fd, WDOGIOC_TICKLE);
 112                 else {
 113                         wm.wm_mode = WDOG_MODE_DISARMED;
 114                         rump_sys_ioctl(fd, WDOGIOC_SMODE, &wm);
 115                 }
 116                 kill(getppid(), SIGUSR1);
 117
 118                 sleep(2);
 119                 printf("staying alive\n");
 120                 kill(getppid(), SIGUSR1);
 121                 _exit(2);
 122         }
 123         /* fail */
 124         printf("no watchdog registered!\n");
 125         _exit(1);
 126 }
 127
 128 ATF_TC(reboot);
 129 ATF_TC_HEAD(reboot, tc)
 130 {
 131
 132         atf_tc_set_md_var(tc, "descr", "check swwdog reboot capability");
 133 }
 134
 135 ATF_TC_BODY(reboot, tc)
 136 {
 137         extern bool rumpns_swwdog_reboot;
 138         int status;
 139
 140         /* XXX: should use sysctl */
 141         rumpns_swwdog_reboot = true;
 142         status = testbody(1);
 143
 144         ATF_REQUIRE(WIFEXITED(status));
 145         ATF_REQUIRE_EQ(WEXITSTATUS(status), 0);
 146 }
 147
 148 ATF_TC(panic);
 149 ATF_TC_HEAD(panic, tc)
 150 {
 151
 152         atf_tc_set_md_var(tc, "descr", "check swwdog panic capability");
 153 }
 154
 155 ATF_TC_BODY(panic, tc)
 156 {
 157         extern bool rumpns_swwdog_reboot;
 158         int status;
 159
 160         /* XXX: should use sysctl */
 161         rumpns_swwdog_reboot = false;
 162         status = testbody(1);
 163
 164         ATF_REQUIRE(WIFSIGNALED(status));
 165         ATF_REQUIRE_EQ(WTERMSIG(status), SIGABRT);
 166 }
 167
 168 ATF_TC(disarm);
 169 ATF_TC_HEAD(disarm, tc)
 170 {
 171
 172         atf_tc_set_md_var(tc, "descr", "check swwdog disarm capability");
 173 }
 174
 175 ATF_TC_BODY(disarm, tc)
 176 {
 177         int status;
 178
 179         status = testbody(2);
 180
 181         ATF_REQUIRE(WIFEXITED(status));
 182         ATF_REQUIRE_EQ(WEXITSTATUS(status), 2);
 183 }
 184
 185 ATF_TP_ADD_TCS(tp)
 186 {
 187
 188         ATF_TP_ADD_TC(tp, panic);
 189         ATF_TP_ADD_TC(tp, reboot);
 190         ATF_TP_ADD_TC(tp, disarm);
 191
 192         return atf_no_error();
 193 }