#!/sbin/runscript
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

opts="save"

depend() {
	case "${CLOCK_ADJTIME}" in
		"")     before *;;
		/etc/*) need checkroot;;
		*)      need localmount;;
	esac
}

setupopts() {
	case "${RC_SYS}" in
		UML|VPS|XEN)
			TBLURB="${RC_SYS}"
			fakeit=1
			;;
		*)
			case "$(uname -m)" in
				s390*)
					TBLURB="s390"
					fakeit=1
					;;
				*)
					if [ -e /proc/devices ] && grep -q " cobd$" /proc/devices ; then
						TBLURB="coLinux"
						fakeit=1
					elif [ "${CLOCK}" = "UTC" ] ; then
						myopts="--utc"
						TBLURB="UTC"
					else
						myopts="--localtime"
						TBLURB="Local Time"
					fi
					;;
			esac
			;;
	esac
	[ ${fakeit} -eq 1 ] && return 0

	if [ -z "${CLOCK_ADJTIME}" -o ! -w /etc ] ; then
		myadj="--noadjfile"
	else
		myadj="--adjust"
	fi

	[ "${SRM}" = "yes" ] && myopts="${myopts} --srm"
	[ "${ARC}" = "arc" ] && myopts="${myopts} --arc"
	myopts="${myopts} ${CLOCK_OPTS}"

	# Make sure user isn't using rc.conf anymore.
	if grep -q "^CLOCK=" /etc/rc.conf ; then
		ewarn $"CLOCK should not be set in /etc/rc.conf but in /etc/conf.d/clock"
	fi

	# Make sure people set their timezone ... we do it here
	# even though we don't actually use the variable so that
	# people see the warning on boot.
	if [ "${TIMEZONE-Factory}" = "Factory" ] ; then
		ewarn "Your TIMEZONE in /etc/conf.d/clock is still set to Factory!"
	fi
}

start() {
	local myopts= myadj= TBLURB= fakeit=0 errstr="" retval=0

	if [ -x /sbin/hwclock ] ; then
		[ -w "${CLOCK_ADJTIME}" ] && echo "0.0 0 0.0" > "${CLOCK_ADJTIME}"
	fi

	setupopts

	if [ ${fakeit} -ne 1 -a -e /proc/modules -a ! -e /dev/rtc ] ; then
		modprobe rtc 2>/dev/null || modprobe genrtc 2>/dev/null
	fi

	ebegin "Setting system clock using the hardware clock" "[${TBLURB}]"
	if [ ${fakeit} -eq 1 ] ; then
		retval=0
	elif [ -x /sbin/hwclock ] ; then
		# Don't call hwclock unless we need to
		if [ "${TBLURB}" != "UTC" -o "${myadj}" != "--noadjfile" ] ; then
			# Since hwclock always exit's with a 0, need to check its output.
			errstr="$(/sbin/hwclock ${myadj} ${myopts} 2>&1 >/dev/null)"
			errstr="${errstr}$(/sbin/hwclock --hctosys ${myopts} 2>&1 >/dev/null)"

			if [ -n "${errstr}" ] ; then
				ewarn "${errstr}"
				retval=1
			fi
			errstr="Failed to set clock"
		fi
	else
		retval=1
		errstr="/sbin/hwclock not found"
	fi
	eend ${retval} "${errstr}" "You will need to set the clock yourself"

	return 0
}

stop() {
	# Don't tweak the hardware clock on LiveCD halt.
	[ -n "${CDBOOT}" -o "${CLOCK_SYSTOHC}" != "yes" ] && return 0

	local myopts= myadj= TBLURB= fakeit=0 errstr="" retval=0

	setupopts

	ebegin "Setting hardware clock using the system clock" "[${TBLURB}]"
	if [ ${fakeit} -eq 1 ] ; then
		retval=0
	elif [ -x /sbin/hwclock ] ; then
		[ -z "$(/sbin/hwclock --systohc ${myopts} 2>&1 >/dev/null)" ]
		retval=$?
		errstr="Failed to sync clocks"
	else
		retval=1
		errstr="/sbin/hwclock not found"
	fi
	eend ${retval} "${errstr}"
}

save() {
	CLOCK_SYSTOHC="yes"
	stop
}

# vim: set ts=4 :