#!/bin/sh
set -e

rescan_inittab () {
	# other inits maintain a compat initctl pipe, so we check that is not
	# systemd, that initctl exists and that sysvinit-core is installed
	if [ ! -d /run/systemd/system ] && [ -e /run/initctl ] ; then
		if [ -e /sbin/telinit ] ; then
			# rescan inittab to pick new entry
			telinit q
		fi
	fi
}

write_inittab () {
	if ! grep -q '^#runit-sysv maintscript -- BEGIN' /etc/inittab ; then
		cat /etc/inittab - <<EOF > /etc/inittab.tmp

#runit-sysv maintscript -- BEGIN
SV:123456:respawn:/etc/runit/2
#runit-sysv maintscript -- END
EOF
		mv /etc/inittab.tmp /etc/inittab
		rescan_inittab
	fi
}

if [ -f /etc/inittab ]; then
	write_inittab
fi

case "$1" in
    triggered)
	write_inittab
    ;;
esac

#DEBHELPER#