Function sysctl_clock_do_io

freebsd/kern/subr_rtc.c:403–427

}

static int
sysctl_clock_do_io(SYSCTL_HANDLER_ARGS)
{
	struct timespec ts_discard;
	int error, value;

	value = 0;
	error = sysctl_handle_int(oidp, &value, 0, req);
	if (error != 0 || req->newptr == NULL)
		return (error);

	switch (value) {
	case CLOCK_DBG_READ:
		if (read_clocks(&ts_discard, true) == ENXIO)
			printf("No registered RTC clocks\n");
		break;
	case CLOCK_DBG_WRITE:
		resettodr();
		break;
	default:
                return (EINVAL);
	}

	return (0);
}