# @FUNCTION: systemd_enable_ntpunit

# @USAGE: <NN-name> <service>...

# @DESCRIPTION:

# Add an NTP service provider to the list of implementations

# in timedated. <NN-name> defines the newly-created ntp-units.d priority

# and name, while the remaining arguments list service units that will

# be added to that file.

#

# Uses doins, thus it is fatal in EAPI 4 and non-fatal in earlier

# EAPIs.

#

# Doc: http://www.freedesktop.org/wiki/Software/systemd/timedated/

systemd_enable_ntpunit() {

	debug-print-function ${FUNCNAME} "${@}"

	if [[ ${#} -lt 2 ]]; then

		die "Usage: systemd_enable_ntpunit <NN-name> <service>..."

	fi

	local ntpunit_name=${1}

	local services=( "${@:2}" )

	if [[ ${ntpunit_name} != [0-9][0-9]-* ]]; then

		die "ntpunit.d file must be named NN-name where NN are digits."

	elif [[ ${ntpunit_name} == *.list ]]; then

		die "The .list suffix is appended implicitly to ntpunit.d name."

	fi

	local unitdir=$(systemd_get_unitdir)

	local s

	for s in "${services[@]}"; do

		if [[ ! -f "${D}${unitdir}/${s}" ]]; then

			die "ntp-units.d provider ${s} not installed (yet?) in \${D}."

		fi

		echo "${s}" >> "${T}"/${ntpunit_name}.list

	done

	(

		insinto "$(_systemd_get_utildir)"/ntp-units.d

		doins "${T}"/${ntpunit_name}.list

	)

	local ret=${?}

	rm "${T}"/${ntpunit_name}.list || die

	return ${ret}

}