daemon: makepid implies fork

[projects/rc-scripts.git] / lib / ifup-aliases

#!/bin/sh
#
#
# Adds all addresses of device.
# Called from ifup-post.

# Add all addresses
for IP_ADDR in $IPADDR_ALIASES; do
	[ -z "$IP_ADDR" ] && continue
	# Be sure that primary address is added
	if [ "$IP_ADDR" = "$IP4ADDR" -o "$IP_ADDR" = "$IP6ADDR" ]; then
		if (ip addr show dev $DEVICE | grep -qE "[[:space:]]${IP_ADDR}[[:space:]]"); then
			continue
		fi
	fi
	if is_yes "${IPV4_NETWORKING}"; then
		ip -4 addr add ${IP_ADDR} dev ${DEVICE} brd +
	fi
done

for IP_ADDR in $IPV6_ADDR; do
	[ -z "$IP_ADDR" ] && continue
	# Be sure that primary address is added
	if [ "$IP_ADDR" = "$IP4ADDR" -o "$IP_ADDR" = "$IP6ADDR" ]; then
		if (ip addr show dev $DEVICE | grep -qE "[[:space:]]${IP_ADDR}[[:space:]]"); then
			continue
		fi
	fi
	# Check for IPv6 address
	if (echo $IP_ADDR | grep -q ":"); then
		if is_yes "${IPV6_NETWORKING}"; then
			ip -6 addr add ${IP_ADDR} dev ${DEVICE}
		fi
	elif is_yes "${IPV4_NETWORKING}"; then
		ip -4 addr add ${IP_ADDR} dev ${DEVICE} brd +
	fi
done

for nr in $(awk 'BEGIN { max=0; }; /^IPADDR[0-9]+=/ { s = $0; gsub(/^IPADDR/, "", s); gsub(/=.*/, "", s); if (int(s) > int(max)) { max=s; }; };  END { for(j=1; j<=int(max); j++) print j } ' $CONFIG); do
	eval IP_ADDR="\$IPADDR${nr}"
	[ -z "$IP_ADDR" ] && continue

	eval IP_ADDR_OPT="\$IP_AOPTS${nr}"
	eval IP_ROUTE_OPT="\$IP_ROPTS${nr}"
	eval IP_ADDR_LABEL="\$IP_LABEL${nr}"

	# Be sure that primary address is added
	if [ "$IP_ADDR" = "$IP4ADDR" -o "$IP_ADDR" = "$IP6ADDR" ]; then
		if (ip addr show dev $DEVICE | grep -qE "[[:space:]]${IP_ADDR}[[:space:]]"); then
			continue
		fi
	fi
	# Check for IPv6 address
	if echo $IP_ADDR | grep -q ":"; then
		if is_yes "${IPV6_NETWORKING}"; then
			ip -6 addr add ${IP_ADDR} dev ${DEVICE} ${IP_ADDR_OPT}
			if [ -n "${IP_ADDR_LABEL}" ]; then
				ip -6 addrlabel add prefix ${IP_ADDR} dev ${DEVICE} label ${IP_ADDR_LABEL}
			fi
		fi
	elif is_yes "${IPV4_NETWORKING}"; then
		# If broadcast is missing then autocalculate it
		if ! (echo $IP_ADDR_OPT | grep -qE "brd|broadcast"); then
			IP_ADDR_OPT="brd + ${IP_ADDR_OPT}"
		fi
		ip -4 addr add ${IP_ADDR} dev ${DEVICE} ${IP_ADDR_OPT}
	fi
done

# Setup IPv4-compatible addresses
if is_yes "$IPV6_NETWORKING" && [ "$BOOTPROTO6" = "v4compat" ]; then
	# enable automatic tunnels
	ip link set sit0 up

	# add v4compat addresses to device
	for addr in $(ip -4 addr show scope global dev $DEVICE | \
		awk '/inet/ { print $2 }' | awk -F"/" '{ print $1 }'); do
		ip -6 addr add ::$addr dev $DEVICE
	done
fi