diff options
Diffstat (limited to 'Documentation/watchdog/src/watchdog-test.c')
| -rw-r--r-- | Documentation/watchdog/src/watchdog-test.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c index 65f6c19cb86..3da822967ee 100644 --- a/Documentation/watchdog/src/watchdog-test.c +++ b/Documentation/watchdog/src/watchdog-test.c @@ -7,6 +7,7 @@ #include <string.h> #include <unistd.h> #include <fcntl.h> +#include <signal.h> #include <sys/ioctl.h> #include <linux/types.h> #include <linux/watchdog.h> @@ -18,7 +19,7 @@ int fd; * the PC Watchdog card to reset its internal timer so it doesn't trigger * a computer reset. */ -void keep_alive(void) +static void keep_alive(void) { int dummy; @@ -29,8 +30,18 @@ void keep_alive(void) * The main program. Run the program with "-d" to disable the card, * or "-e" to enable the card. */ + +static void term(int sig) +{ + close(fd); + fprintf(stderr, "Stopping watchdog ticks...\n"); + exit(0); +} + int main(int argc, char *argv[]) { + int flags; + fd = open("/dev/watchdog", O_WRONLY); if (fd == -1) { @@ -41,28 +52,35 @@ int main(int argc, char *argv[]) if (argc > 1) { if (!strncasecmp(argv[1], "-d", 2)) { - ioctl(fd, WDIOC_SETOPTIONS, WDIOS_DISABLECARD); + flags = WDIOS_DISABLECARD; + ioctl(fd, WDIOC_SETOPTIONS, &flags); fprintf(stderr, "Watchdog card disabled.\n"); fflush(stderr); - exit(0); + goto end; } else if (!strncasecmp(argv[1], "-e", 2)) { - ioctl(fd, WDIOC_SETOPTIONS, WDIOS_ENABLECARD); + flags = WDIOS_ENABLECARD; + ioctl(fd, WDIOC_SETOPTIONS, &flags); fprintf(stderr, "Watchdog card enabled.\n"); fflush(stderr); - exit(0); + goto end; } else { fprintf(stderr, "-d to disable, -e to enable.\n"); fprintf(stderr, "run by itself to tick the card.\n"); fflush(stderr); - exit(0); + goto end; } } else { fprintf(stderr, "Watchdog Ticking Away!\n"); fflush(stderr); } + signal(SIGINT, term); + while(1) { keep_alive(); sleep(1); } +end: + close(fd); + return 0; } |