{
DEBUG(2, "Ping\n");
if (write(wdt_fd, "X", 1) < 0)
- perror("WDT failed to write\n");
+ ERROR("WDT failed to write: %s\n", strerror(errno));
uloop_timeout_set(t, wdt_frequency * 1000);
}
+void watchdog_set_stopped(bool val)
+{
+ if (val)
+ uloop_timeout_cancel(&wdt_timeout);
+ else
+ watchdog_timeout_cb(&wdt_timeout);
+}
+
+bool watchdog_get_stopped(void)
+{
+ return !wdt_timeout.pending;
+}
+
int watchdog_timeout(int timeout)
{
if (wdt_fd < 0)
return fd_buf;
}
-void watchdog_init(void)
+void watchdog_init(int preinit)
{
char *env = getenv("WDTFD");
+ if (wdt_fd >= 0)
+ return;
+
wdt_timeout.cb = watchdog_timeout_cb;
if (env) {
- LOG("- watchdog -\n");
DEBUG(1, "Watchdog handover: fd=%s\n", env);
wdt_fd = atoi(env);
- fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) | FD_CLOEXEC);
unsetenv("WDTFD");
} else {
wdt_fd = open("/dev/watchdog", O_WRONLY);
- if (getpid() != 1)
- fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) | FD_CLOEXEC);
}
+
if (wdt_fd < 0)
return;
+
+ if (!preinit)
+ fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) | FD_CLOEXEC);
+
+ LOG("- watchdog -\n");
watchdog_timeout(30);
watchdog_timeout_cb(&wdt_timeout);