static void
catch_sig_watchdog(int sig)
{
switch (sig)
{
case SIGALRM:
watchdog_on_timer();
break;
case SIGHUP:
watchdog_on_sighup();
break;
case SIGUSR1:
watchdog_on_sigusr1();
break;
case SIGUSR2:
watchdog_on_sigusr2();
break;
case SIGTERM:
remove(WD_PID_FILE);
#if defined (BOARD_GPIO_BTN_WPS)
cpu_gpio_irq_set(BOARD_GPIO_BTN_WPS, 0, 0, 0);
#endif
#if defined (BOARD_GPIO_BTN_WLTOG)
cpu_gpio_irq_set(BOARD_GPIO_BTN_WLTOG, 0, 0, 0);
#endif
#if defined (BOARD_GPIO_BTN_RESET)
cpu_gpio_irq_set(BOARD_GPIO_BTN_RESET, 0, 0, 0);
#endif
wd_alarmtimer(0, 0);
exit(0);
break;
}
}
static void
notify_shutdown(void)
{
#if defined (BOARD_GPIO_BTN_PWR_CUT) && defined (BOARD_GPIO_BTN_PWR_INT)
unsigned int i_button_value = BTN_PRESSED;
if (cpu_gpio_get_pin(BOARD_GPIO_BTN_PWR_INT, &i_button_value) < 0)
return;
if (i_button_value == BTN_PRESSED)
return;
/* POWER button is released, shutdown now */
cpu_gpio_irq_set(BOARD_GPIO_BTN_PWR_INT, 0, 0, 0);
reset_signals();
printf("Button POWER is released, shutdown system...\n");
shutdown_router(2);
printf("\nShutdown!\n\n");
usleep(10000);
sync();
/* Power OFF */
cpu_gpio_set_pin(BOARD_GPIO_BTN_PWR_CUT, 0);
#endif
}
int
watchdog_main(int argc, char *argv[])
{
FILE *fp;
pid_t pid;
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = catch_sig_watchdog;
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, SIGALRM);
sigaddset(&sa.sa_mask, SIGHUP);
sigaddset(&sa.sa_mask, SIGUSR1);
sigaddset(&sa.sa_mask, SIGUSR2);
sigaction(SIGHUP, &sa, NULL);
sigaction(SIGUSR1, &sa, NULL);
sigaction(SIGUSR2, &sa, NULL);
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGALRM, &sa, NULL);
memset(&sa, 0, sizeof(sa));
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
sigaction(SIGPIPE, &sa, NULL);
if (daemon(0, 0) < 0) {
perror("daemon");
exit(errno);
}
pid = getpid();
/* never invoke oom killer */
oom_score_adjust(pid, OOM_SCORE_ADJ_MIN);
/* write pid */
if ((fp = fopen(WD_PID_FILE, "w")) != NULL) {
fprintf(fp, "%d", pid);
fclose(fp);
}
nvram_set_int_temp("wd_notify_id", 0);
#if defined (BOARD_GPIO_BTN_WPS)
cpu_gpio_irq_set(BOARD_GPIO_BTN_WPS, 0, 1, pid);
#endif
#if defined (BOARD_GPIO_BTN_WLTOG)
cpu_gpio_irq_set(BOARD_GPIO_BTN_WLTOG, 0, 1, pid);
#endif
#if defined (BOARD_GPIO_BTN_RESET)
cpu_gpio_irq_set(BOARD_GPIO_BTN_RESET, 0, 1, pid);
#endif
/* set timer */
wd_alarmtimer(WD_NORMAL_PERIOD, 0);
/* most of time it goes to sleep */
while (1) {
pause();
}
return 0;
}