1 // SPDX-License-Identifier: GPL-2.0
3 * Watchdog Driver Test Program
4 * - Tests all ioctls
5 * - Tests Magic Close - CONFIG_WATCHDOG_NOWAYOUT
6 * - Could be tested against softdog driver on systems that
7 *   don't have watchdog hardware.
8 * - TODO:
9 * - Enhance test to add coverage for WDIOC_GETTEMP.
11 * Reference: Documentation/watchdog/watchdog-api.rst
24 #include <linux/watchdog.h>
34 	{"enable",              no_argument, NULL, 'e'},
50  * the PC Watchdog card to reset its internal timer so it doesn't trigger
64  * The main program.  Run the program with "-d" to disable the card,
65  * or "-e" to enable the card.
74 		printf("\nStopping watchdog ticks failed (%d)...\n", errno);  in term()
76 		printf("\nStopping watchdog ticks...\n");  in term()
83 	printf(" -f, --file\t\tOpen watchdog device file\n");  in usage()
84 	printf("\t\t\tDefault is /dev/watchdog\n");  in usage()
85 	printf(" -i, --info\t\tShow watchdog_info\n");  in usage()
86 	printf(" -s, --status\t\tGet status & supported features\n");  in usage()
87 	printf(" -b, --bootstatus\tGet last boot status (Watchdog/POR)\n");  in usage()
88 	printf(" -d, --disable\t\tTurn off the watchdog timer\n");  in usage()
89 	printf(" -e, --enable\t\tTurn on the watchdog timer\n");  in usage()
90 	printf(" -h, --help\t\tPrint the help message\n");  in usage()
91 	printf(" -p, --pingrate=P\tSet ping rate to P seconds (default %d)\n",  in usage()
93 	printf(" -t, --timeout=T\tSet timeout to T seconds\n");  in usage()
94 	printf(" -T, --gettimeout\tGet the timeout\n");  in usage()
95 	printf(" -n, --pretimeout=T\tSet the pretimeout to T seconds\n");  in usage()
96 	printf(" -N, --getpretimeout\tGet the pretimeout\n");  in usage()
97 	printf(" -L, --gettimeleft\tGet the time left until timer expires\n");  in usage()
99 	printf("Parameters are parsed left-to-right in real-time.\n");  in usage()
100 	printf("Example: %s -d -t 10 -p 5 -e\n", progname);  in usage()
101 	printf("Example: %s -t 12 -T -n 7 -N\n", progname);  in usage()
115 	{WDIOF_ALARMONLY,  "Watchdog triggers a management or other external alarm not a reboot"},
117 	{WDIOS_DISABLECARD,  "Turn off the watchdog timer"},
118 	{WDIOS_ENABLECARD,  "Turn on the watchdog timer"},
160 		printf("Last boot is caused by: Power-On-Reset\n");  in print_boot_status()
178 	char *file = "/dev/watchdog";  in main()
184 	while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {  in main()
191 	if (fd == -1) {  in main()
193 			printf("Watchdog device (%s) not found.\n", file);  in main()
195 			printf("Run watchdog as root.\n");  in main()
197 			printf("Watchdog device open failed %s\n",  in main()
199 		exit(-1);  in main()
203 	 * Validate that `file` is a watchdog device  in main()
214 	while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {  in main()
229 				printf("Watchdog card disabled.\n");  in main()
239 				printf("Watchdog card enabled.\n");  in main()
249 			printf("Watchdog ping rate set to %u seconds.\n", ping_rate);  in main()
270 				printf("Watchdog timeout set to %u seconds.\n", flags);  in main()
288 				printf("Watchdog pretimeout set to %u seconds.\n", flags);  in main()
335 	printf("Watchdog Ticking Away!\n");  in main()
352 	 * enabled to ensure watchdog gets disabled on close.  in main()
356 		printf("Stopping watchdog ticks failed (%d)...\n", errno);  in main()