#! /bin/sh
#
# hwclock      This writes the system time to the RTC on shutdown
#

RTC_DEVICE=rtc0
DAEMON=hwclock

# shellcheck source=/dev/null
[ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON"

# Quietly do nothing if /dev/rtc0 does not exist
[ -c /dev/$RTC_DEVICE ] || exit 0

start(){
	: # Nothing to do on startup
}

stop(){
	printf "Saving the system clock to /dev/%s\n" "${RTC_DEVICE}"
	/sbin/$DAEMON -f "/dev/${RTC_DEVICE}" -w
}

case "$1" in
	start)
		start
		;;
	stop)
		stop
		;;
	restart|reload)
		stop
		start
		;;
	*)
		echo "Usage: $0 {start|stop|restart|reload}"
		exit 1
		;;
esac