freebsd-dev/etc/rc.d/defaultroute

#!/bin/sh
#
# Wait for the default route to be up if DHCP is in use
#
# $FreeBSD$
#

# PROVIDE: defaultroute
# REQUIRE: devd faith netif stf
# KEYWORD: nojail

. /etc/rc.subr
. /etc/network.subr

name="defaultroute"
start_cmd="defaultroute_start"
stop_cmd=":"

# Does any interface have a carrier?
defaultroute_carrier()
{
	local carrier nocarrier

	carrier=1
	for _if in ${dhcp_interfaces}; do
		output=`/sbin/ifconfig ${_if}`
		nocarrier=`expr "${output}" : '.*[[:blank:]]status: \(no carrier\)'`
		[ -z "${nocarrier}" ] && carrier=0
	done
	return ${carrier}
}

defaultroute_start()
{
	local nl waited

	afexists inet || return 0

	# Return without waiting if we don't have dhcp interfaces or
	# if none of the dhcp interfaces is plugged in.
	dhcp_interfaces=`list_net_interfaces dhcp`
	[ -z "${dhcp_interfaces}" ] && return

	# Wait for a default route
	waited=0
	while [ ${waited} -lt ${defaultroute_delay} ]; do
		defif=`get_default_if -inet`
		if [ -n "${defif}" ]; then
			if [ ${waited} -ne 0 ]; then
				echo -n "($defif)"
				nl=1
			fi
			break
		fi
		if [ ${waited} -eq 0 ]; then
			echo -n "Waiting ${defaultroute_delay}s for the default route interface: "
		else
			echo -n .
		fi
		if [ ${waited} -eq ${defaultroute_carrier_delay} ] && ! defaultroute_carrier; then
			echo -n "(no carrier)"
			break
		fi
		nl=1
		sleep 1
		waited=$(($waited + 1))
	done

	[ -n "$nl" ] && echo
}

load_rc_config $name
run_rc_command "$1"