The corrected /etc/init.d/net.eth0 file

net.eth0 (text/plain), 3.20 KB, created by dynamotwain on 2002-06-24 09:34:27 UTC

#!/sbin/runscript
# Copyright 1999-2002 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License, v2 or later
# $Header: /home/cvsroot/gentoo-src/rc-scripts/init.d/net.eth0,v 1.15 2002/05/10 21:57:44 azarah Exp $

#NB: Config is in /etc/conf.d/net


#for pcmcia users. note that pcmcia must be added to the same
#runlevel as the net.* script that needs it.
#depend() {
#	use pcmcia
#}

checkconfig() {
	if [ -z "$(eval echo \$\{iface_${IFACE}\})" ]
	then
		eerror "Please make sure that /etc/conf.d/net has \$iface_$IFACE set"
		return 1
	fi
}

start() {
	checkconfig || return 1
	local iface_args="$(eval echo \$\{iface_${IFACE}\})"
	local dhcp_args="$(eval echo \$\{dhcpcd_${IFACE}\})"
	local retval=0
	ebegin "Bringing ${IFACE} up"
	if [ "$(eval echo \$\{iface_${IFACE}\})" != "dhcp" ]
	then
		/sbin/ifconfig ${IFACE} ${iface_args} >/dev/null || {
			retval=$?
			eend ${retval} "Failed to bring ${IFACE} up"
			return ${retval}
		}
	else
		/sbin/dhcpcd ${dhcp_args} ${IFACE} >/dev/null || {
			retval=$?
			eend ${retval} "Failed to bring ${IFACE} up"
			return ${retval}
		}
	fi
	eend 0

	if [ -n "$(eval echo \$\{alias_${IFACE}\})" ]
	then
		local x=""
		local num=0
		local aliasbcast=""
		local aliasnmask=""

		if [ -n  "`eval echo \$\{broadcast_${IFACE}\}`" ]
		then
			aliasbcast="broadcast `eval echo \$\{broadcast_${IFACE}\}`"
		fi

		if [ -n  "`eval echo \$\{netmask_${IFACE}\}`" ]
		then
			aliasnmask="netmask `eval echo \$\{netmask_${IFACE}\}`"
		fi
		
		ebegin "  Adding aliases"
		for x in $(eval echo \$\{alias_${IFACE}\})
		do
			ebegin "    ${IFACE}:${num}"
			/sbin/ifconfig ${IFACE}:${num} ${x} \
				${aliasbcast} ${aliasnmask} >/dev/null
			num=$((num + 1))
			eend 0
		done
		save_options "alias" "$(eval echo \$\{alias_${IFACE}\})"
	fi
	
	if [ -n "${gateway}" ] && [ "${gateway%/*}" = "${IFACE}" ]
	then
		ebegin "  Setting default gateway"
		/sbin/route add default gw ${gateway#*/} dev ${gateway%/*} \
			netmask 0.0.0.0 metric 1 >/dev/null || {
			
			local error=$?
			ifconfig ${IFACE} down &>/dev/null
			eend ${error} "Failed to bring ${IFACE} up"
			return ${error}
		}
		eend 0
	fi

	#enabling rp_filter causes wacky packets to be auto-dropped by
	#the kernel

	if [ -e /proc/sys/net/ipv4/conf/${IFACE}/rp_filter ]
	then
		echo 1 > /proc/sys/net/ipv4/conf/${IFACE}/rp_filter
	fi
}

stop() {
	local myalias="$(get_options alias)"
	ebegin "Bringing ${IFACE} down"
	#do some cleanup in case the amount of aliases change
	if [ -n "${myalias}" ]
	then
		local x=""
		local num=0
		for x in ${myalias}
		do
			/sbin/ifconfig ${IFACE}:${num} down &>/dev/null
			num=$((num + 1))
		done
	fi

	if [ "$(eval echo \$\{iface_${IFACE}\})" == "dhcp" ]
	then
		#Incorrect way to shutdown dhcpcd
		#/sbin/dhcpcd -k ${IFACE} &>/dev/null
		#Correct way to shutdown dhcpcd: Send SIGTERM, and it won't release IP Address
		#Extract pid from pid file automatically created
		local pid=`cat /var/run/dhcpcd-$IFACE.pid`
		kill -s SIGTERM $pid
	
		# Give dhcpcd time to properly shutdown
		local count=0
		einfon "  Waiting for dhcpcd to shutdown"
		while [ "${count}" -lt 5 ]
		do
			echo -n "."
			sleep 1
			count=$((count + 1))
		done
		echo "done"
	else
		/sbin/ifconfig ${IFACE} down &>/dev/null
	fi
	eend 0
}


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