ssm-services/init.d/lo.iface

#!/usr/bin/env watchman

cfg_iface="${service_name%%.*}"

service_type='oneshot'
service_command='/usr/bin/ip'
service_args=( link set "$cfg_iface" up)

wait_for_iface() {
	local iface="$1" timer='0' timeout='6'

	until [[ "$(ip link show $iface up)" ]]; do
		(( timer >= timeout )) && { return 1; }
		(( timer++ ))
	done
}

start() {
	watchman.msg "Activating the $cfg_iface interface..."
	watchman.start

	wait_for_iface || {
		echo "Interface $cfg_iface failed to come up!"
		return 1
	}
}

stop() {
	watchman.msg "Deactivating the $cfg_iface interface..."
	ip link set "${cfg_iface}" down
	watchman.stop
}