network-online


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#!/usr/bin/env bash
mode="$1"
lock=/run/network-online/lock
fifo=/run/network-online/"$2"
PS4="$mode: "
case "$mode" in
	start)
		trap 'rm -f -- "$fifo"' EXIT
		set -x
		mkdir -p /run/network-online || exit $?
		exec 8>"$lock" || exit $?
		flock -s 8 || exit $?
		systemctl start network-online.target || exit $?

		mkfifo "$fifo" || exit $?
		cat "$fifo"
		exec 8>&-
		echo stopped >> "$fifo"
		;;
	stop)
		set -x
		exec 8>"$lock" || exit $?
		echo stopping >> "$fifo" || exit $?
		cat "$fifo" || exit $?
		if flock -x -n 8; then
			systemctl stop network-online.target
			rm -rf /run/network-online
		fi
		;;
esac