xref: /freebsd/libexec/rc/rc.d/defaultroute (revision d52de9a3448f0233a11e0b4de557e403ace71748)

#!/bin/sh
#
# Wait for the default route to be up if DHCPv4 or IPv6 SLAAC is in use
#
#

# PROVIDE: defaultroute
# REQUIRE: devd netif stf
# KEYWORD: nojailvnet

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

name="defaultroute"
desc="Setup default router"
start_cmd="defaultroute_start"
stop_cmd=":"

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

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

defaultroute_start()
{
	local have_inet have_inet6 nl waited

	# Check for IPv4/IPv6 support
	have_inet=0
	afexists inet  && have_inet=1
	have_inet6=0
	afexists inet6 && have_inet6=1
	[ ${have_inet} -eq 0 ] && [ ${have_inet6} -eq 0 ] && return

	# Return without waiting if we don't have dhcp or autoconf interfaces,
	# or if none of them is plugged in.
	[ ${have_inet}  -ne 0 ] && dhcp_interfaces=`list_net_interfaces dhcp`
	[ ${have_inet6} -ne 0 ] && autoconf_interfaces=`list_net_interfaces autoconf`
	[ -z "${dhcp_interfaces}" -a -z "${autoconf_interfaces}" ] && return

	# Wait for a default route
	waited=0
	while [ ${waited} -lt ${defaultroute_delay} ]; do
		[ ${have_inet}  -ne 0 ] && defif=`get_default_if -inet`
		[ ${have_inet6} -ne 0 ] && defif6=`get_default_if -inet6`
		if [ -n "${defif}" ] || [ -n "${defif6}" ]; then
			if [ ${waited} -ne 0 ]; then
				[ -n "${defif}"  ] && echo -n "($defif)=>inet "
				[ -n "${defif6}" ] && echo -n "($defif6)=>inet6"
				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

# doesn't make sense to run in a svcj: config setting
defaultroute_svcj="NO"

run_rc_command "$1"