1 /* $NetBSD: t_swwdog.c,v 1.7 2017/01/13 21:30:39 christos 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 } 194