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#!/bin/sh
# Synchronize system time with hardware time.
# TODO: Split NTP handling to its own hook. Having it here is ugly and silly.
#       Do modern kernels handle this correctly?  If so, we should detect that
#       and skip this hook.

. "${PM_FUNCTIONS}"

NTPD_LOCK="pm-ntpd.lock"

suspend_clock()
{
	if try_lock "${NTPD_LOCK}"; then
		trap 'release_lock "${NTPD_LOCK}"' 0
		stopservice ntpd
	fi
	/sbin/hwclock --systohc >/dev/null 2>&1 0<&1
}

resume_clock()
{
	/sbin/hwclock --hctosys >/dev/null 2>&1 0<&1
	rc=$?
	# Bring back ntpd _after_ NetworkManager and such come back...
	( 	spin_lock "${NTPD_LOCK}";
		trap 'release_lock "${NTPD_LOCK}"' 0
		sleep 20; 
		restartservice ntpd; ) &
	return $rc
}

case "$1" in
	hibernate|suspend)
		suspend_clock
		;;
	thaw|resume)
		resume_clock
		;;
	*) exit $NA
		;;
esac