Release 4.14 tools/testing/selftests/watchdog/watchdog-test.c
// SPDX-License-Identifier: GPL-2.0
/*
* Watchdog Driver Test Program
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/watchdog.h>
#define DEFAULT_PING_RATE 1
int fd;
const char v = 'V';
static const char sopts[] = "bdehp:t:";
static const struct option lopts[] = {
{"bootstatus", no_argument, NULL, 'b'},
{"disable", no_argument, NULL, 'd'},
{"enable", no_argument, NULL, 'e'},
{"help", no_argument, NULL, 'h'},
{"pingrate", required_argument, NULL, 'p'},
{"timeout", required_argument, NULL, 't'},
{NULL, no_argument, NULL, 0x0}
};
/*
* This function simply sends an IOCTL to the driver, which in turn ticks
* the PC Watchdog card to reset its internal timer so it doesn't trigger
* a computer reset.
*/
static void keep_alive(void)
{
int dummy;
int ret;
ret = ioctl(fd, WDIOC_KEEPALIVE, &dummy);
if (!ret)
printf(".");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Randy Dunlap | 20 | 55.56% | 1 | 33.33% |
| Timur Tabi | 15 | 41.67% | 1 | 33.33% |
| Ladinu Chandrasinghe | 1 | 2.78% | 1 | 33.33% |
| Total | 36 | 100.00% | 3 | 100.00% |
/*
* The main program. Run the program with "-d" to disable the card,
* or "-e" to enable the card.
*/
static void term(int sig)
{
int ret = write(fd, &v, 1);
close(fd);
if (ret < 0)
printf("\nStopping watchdog ticks failed (%d)...\n", errno);
else
printf("\nStopping watchdog ticks...\n");
exit(0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Devendra Naga | 21 | 41.18% | 1 | 20.00% |
| Arnd Bergmann | 18 | 35.29% | 1 | 20.00% |
| Timur Tabi | 11 | 21.57% | 2 | 40.00% |
| Randy Dunlap | 1 | 1.96% | 1 | 20.00% |
| Total | 51 | 100.00% | 5 | 100.00% |
static void usage(char *progname)
{
printf("Usage: %s [options]\n", progname);
printf(" -b, --bootstatus Get last boot status (Watchdog/POR)\n");
printf(" -d, --disable Turn off the watchdog timer\n");
printf(" -e, --enable Turn on the watchdog timer\n");
printf(" -h, --help Print the help message\n");
printf(" -p, --pingrate=P Set ping rate to P seconds (default %d)\n", DEFAULT_PING_RATE);
printf(" -t, --timeout=T Set timeout to T seconds\n");
printf("\n");
printf("Parameters are parsed left-to-right in real-time.\n");
printf("Example: %s -d -t 10 -p 5 -e\n", progname);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eugeniu Rosca | 66 | 100.00% | 3 | 100.00% |
| Total | 66 | 100.00% | 3 | 100.00% |
int main(int argc, char *argv[])
{
int flags;
unsigned int ping_rate = DEFAULT_PING_RATE;
int ret;
int c;
int oneshot = 0;
setbuf(stdout, NULL);
fd = open("/dev/watchdog", O_WRONLY);
if (fd == -1) {
printf("Watchdog device not enabled.\n");
exit(-1);
}
while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
switch (c) {
case 'b':
flags = 0;
oneshot = 1;
ret = ioctl(fd, WDIOC_GETBOOTSTATUS, &flags);
if (!ret)
printf("Last boot is caused by: %s.\n", (flags != 0) ?
"Watchdog" : "Power-On-Reset");
else
printf("WDIOC_GETBOOTSTATUS errno '%s'\n", strerror(errno));
break;
case 'd':
flags = WDIOS_DISABLECARD;
ret = ioctl(fd, WDIOC_SETOPTIONS, &flags);
if (!ret)
printf("Watchdog card disabled.\n");
else
printf("WDIOS_DISABLECARD errno '%s'\n", strerror(errno));
break;
case 'e':
flags = WDIOS_ENABLECARD;
ret = ioctl(fd, WDIOC_SETOPTIONS, &flags);
if (!ret)
printf("Watchdog card enabled.\n");
else
printf("WDIOS_ENABLECARD errno '%s'\n", strerror(errno));
break;
case 'p':
ping_rate = strtoul(optarg, NULL, 0);
if (!ping_rate)
ping_rate = DEFAULT_PING_RATE;
printf("Watchdog ping rate set to %u seconds.\n", ping_rate);
break;
case 't':
flags = strtoul(optarg, NULL, 0);
ret = ioctl(fd, WDIOC_SETTIMEOUT, &flags);
if (!ret)
printf("Watchdog timeout set to %u seconds.\n", flags);
else
printf("WDIOC_SETTIMEOUT errno '%s'\n", strerror(errno));
break;
default:
usage(argv[0]);
goto end;
}
}
if (oneshot)
goto end;
printf("Watchdog Ticking Away!\n");
signal(SIGINT, term);
while (1) {
keep_alive();
sleep(ping_rate);
}
end:
ret = write(fd, &v, 1);
if (ret < 0)
printf("Stopping watchdog ticks failed (%d)...\n", errno);
close(fd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eugeniu Rosca | 169 | 42.57% | 5 | 35.71% |
| Randy Dunlap | 92 | 23.17% | 1 | 7.14% |
| Timur Tabi | 83 | 20.91% | 4 | 28.57% |
| Devendra Naga | 20 | 5.04% | 2 | 14.29% |
| Arnd Bergmann | 18 | 4.53% | 1 | 7.14% |
| James Hogan | 15 | 3.78% | 1 | 7.14% |
| Total | 397 | 100.00% | 14 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eugeniu Rosca | 329 | 47.89% | 5 | 29.41% |
| Randy Dunlap | 143 | 20.82% | 2 | 11.76% |
| Timur Tabi | 115 | 16.74% | 4 | 23.53% |
| Devendra Naga | 44 | 6.40% | 2 | 11.76% |
| Arnd Bergmann | 39 | 5.68% | 1 | 5.88% |
| James Hogan | 15 | 2.18% | 1 | 5.88% |
| Ladinu Chandrasinghe | 1 | 0.15% | 1 | 5.88% |
| Greg Kroah-Hartman | 1 | 0.15% | 1 | 5.88% |
| Total | 687 | 100.00% | 17 | 100.00% |
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