1f01157354
The loopback interface is active on all systems, so there is no need to provide a virtual for it.
355 lines
6.7 KiB
Plaintext
355 lines
6.7 KiB
Plaintext
#!@PREFIX@/sbin/runscript
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# Copyright (c) 2009 Roy Marples <roy@marples.name>
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# Released under the 2-clause BSD license.
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# This script was inspired by the equivalent rc.d network from NetBSD.
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description="Configures network interfaces."
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__nl="
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"
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depend()
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{
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need localmount
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after bootmisc
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if [ -n "$(interfaces)" ]; then
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provide net
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fi
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keyword -jail -prefix -vserver
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}
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uniqify()
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{
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local result= i=
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for i; do
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case " $result " in
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*" $i "*);;
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*) result="$result $i";;
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esac
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done
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echo "${result# *}"
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}
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reverse()
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{
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local result= i=
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for i; do
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result="$i $result"
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done
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echo "${result# *}"
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}
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sys_interfaces()
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{
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case "$RC_UNAME" in
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Linux)
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local w= rest= i= cmd=$1
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while read w rest; do
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i=${w%%:*}
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[ "$i" != "$w" ] || continue
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if [ "$cmd" = u ]; then
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ifconfig "$i" | grep -q "[ ]*UP" || continue
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fi
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printf "%s " "$i"
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done </proc/net/dev
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;;
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*)
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ifconfig -l$1
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;;
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esac
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}
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tentative()
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{
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local inet= address= rest=
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case "$RC_UNAME" in
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Linux)
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[ -x /sbin/ip ] || [ -x /bin/ip ] || return 1
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[ -n "$(ip -f inet6 addr show tentative)" ]
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;;
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*)
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local inet= address= rest=
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LC_ALL=C ifconfig -a | while read inet address rest; do
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case "${inet}" in
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inet6)
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case "${rest}" in
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*" "tentative*) return 2;;
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esac
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;;
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esac
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done
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[ $? = 2 ]
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;;
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esac
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}
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auto_interfaces()
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{
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local ifs= c= f=
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case "$RC_UNAME" in
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NetBSD)
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for c in $(ifconfig -C 2>/dev/null); do
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for f in /etc/ifconfig.${c}[0-9]*; do
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[ -f "$f" ] && printf "%s" "$f{##*.} "
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done
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done
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;;
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*)
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for f in /etc/ifconfig.*; do
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[ -f "$f" ] && printf "%s" "${f##*.} "
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done
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for f in /etc/ip.*; do
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[ -f "$f" ] && printf "%s" "${f##*.} "
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done
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;;
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esac
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echo
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}
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interfaces()
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{
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uniqify $(sys_interfaces "$@") $interfaces $(auto_interfaces)
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}
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dumpargs()
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{
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local f="$1"
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shift
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case "$@" in
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'') [ -f "$f" ] && cat "$f";;
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*"$__nl"*) echo "$@";;
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*)
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(
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set -o noglob
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IFS=';'; set -- $@
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IFS="$__nl"; echo "$*"
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);;
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esac
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}
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intup=false
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runip()
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{
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local int="$1" err=
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shift
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# Ensure we have a valid broadcast address
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case "$@" in
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*" broadcast "*|*" brd "*) ;;
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*:*) ;; # Ignore IPv6
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*) set -- "$@" brd +;;
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esac
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err=$(LC_ALL=C ip address add "$@" dev "$int" 2>&1)
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if [ -z "$err" ]; then
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# ip does not bring up the interface when adding addresses
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if ! $intup; then
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ip link set "$int" up
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intup=true
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fi
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return 0
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fi
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if [ "$err" = "RTNETLINK answers: File exists" ]; then
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ip address del "$@" dev "$int" 2>/dev/null
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fi
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# Localise the error
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ip address add "$@" dev "$int"
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}
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routeflush()
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{
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if [ "$RC_UNAME" = Linux ]; then
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if [ -x /sbin/ip ] || [ -x /bin/ip ]; then
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ip route flush scope global
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ip route delete default 2>/dev/null
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else
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# Sadly we also delete some link routes, but
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# this cannot be helped
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local dest= gate= net= flags= rest=
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route -n | while read dest gate net flags rest; do
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[ -z "$net" ] && continue
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case "$dest" in
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[0-9]*) ;;
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*) continue;;
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esac
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local xtra= netmask="netmask $net"
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case "$flags" in
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U) continue;;
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*H*) flags=-host; netmask=;;
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*!*) flags=-net; xtra=reject;;
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*) flags=-net;;
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esac
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route del $flags $dest $netmask $xtra
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done
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# Erase any default dev eth0 routes
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route del default 2>/dev/null
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fi
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else
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route -qn flush
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fi
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}
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runargs()
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{
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dumpargs "$@" | while read -r args; do
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case "$args" in
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''|"#"*) ;;
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*)
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(
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eval vebegin "${args#*!}"
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eval "${args#*!}"
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veend $?
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);;
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esac
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done
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}
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start()
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{
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local cr=0 r= int= intv= cmd= args= upcmd=
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if [ -z "$domainname" -a -s /etc/defaultdomain ]; then
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domainname=$(cat /etc/defaultdomain)
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fi
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if [ -n "$domainname" ]; then
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ebegin "Setting NIS domainname: $domainname"
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domainname "$domainname"
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eend $?
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fi
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einfo "Starting network"
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routeflush
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if [ "$RC_UNAME" = "Linux" ]; then
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ifconfig lo 127.0.0.1 netmask 255.0.0.0 || cr=1
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route add -net 127.0.0.0 netmask 255.0.0.0 \
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gw 127.0.0.1 reject 2>/dev/null
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else
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ifconfig lo0 127.0.0.1 netmask 255.0.0.0 || cr=1
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route -q add -inet 127.0.0.0 -netmask 255.0.0.0 \
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127.0.0.1 -reject || cr=1
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fi
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eindent
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for int in $(interfaces); do
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local func= cf=
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intv=$(shell_var "$int")
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eval upcmd=\$ifup_$intv
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for func in ip ifconfig; do
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eval cmd=\$${func}_$intv
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if [ -n "$cmd" -o -f /etc/"$func.$int" ]; then
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cf=/etc/"$func.$int"
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break
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fi
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done
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[ -n "$cf" -o -n "$upcmd" -o \
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-f /etc/ifup."$int" -o -f "$cf" ] || continue
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veinfo "$int"
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case "$func" in
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ip) func=runip; intup=false;;
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esac
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eindent
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runargs /etc/ifup."$int" "$upcmd"
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r=0
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dumpargs "$cf" "$cmd" | while read -r args; do
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case "$args" in
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''|"#"*) ;;
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"!"*)
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(
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eval vebegin "${args#*!}"
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eval "${args#*!}"
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veend $?
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);;
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*)
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(
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set -o noglob
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eval set -- "$args"
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vebegin "$@"
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$func "$int" "$@"
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veend $?
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);;
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esac
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done
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eoutdent
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done
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eoutdent
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eend $cr
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# Wait for any inet6 tentative addresses
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r=5
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while [ $r -gt 0 ]; do
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tentative || break
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[ $r = 5 ] && vebegin "Waiting for tentative addresses"
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sleep 1
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: $(( r -= 1 ))
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done
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if [ $r != 5 ]; then
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[ $r != 0 ]
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veend $?
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fi
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if [ -n "$defaultroute" ]; then
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ebegin "Setting default route $defaultroute"
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route add default $defaultroute
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eend $?
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elif [ -n "$defaultiproute" ]; then
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ebegin "Setting default route $defaultiproute"
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ip route add default $defaultiproute
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eend $?
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fi
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if [ -n "$defaultroute6" ]; then
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ebegin "Setting default route $defaultroute6"
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if [ "$RC_UNAME" = Linux ]; then
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routecmd="route -A inet6 add"
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else
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routecmd="route -inet6 add"
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fi
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$routecmd default $defaultroute6
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eend $?
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elif [ -n "$defaultiproute6" ]; then
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ebegin "Setting default route $defaultiproute6"
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ip -f inet6 route add default $defaultiproute6
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eend $?
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fi
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return 0
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}
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stop()
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{
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# Don't stop the network at shutdown.
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# We don't use the noshutdown keyword so that we are started again
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# correctly if we go back to multiuser.
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yesno ${shutdown_network:-YES} && yesno $RC_GOINGDOWN && return 0
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local int= intv= cmd= downcmd= r=
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einfo "Stopping network"
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routeflush
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eindent
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for int in $(reverse $(interfaces u)); do
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intv=$(shell_var "$int")
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eval downcmd=\$ifdown_$intv
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eval cmd=\$ip_$intv
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[ -z "$cmd" ] && eval cmd=\$ifconfig_$intv
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if [ -n "$cmd" -o -f /etc/ip."$int" -o \
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-f /etc/ifconfig."$int" -o \
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-n "$downcmd" -o -f /etc/ifdown."$int" ];
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then
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veinfo "$int"
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runargs /etc/ifdown."$int" "$downcmd"
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if [ -x /sbin/ip ] || [ -x /bin/ip ]; then
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# We need to do this, otherwise we may
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# fail to add things correctly on restart
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ip address flush dev "$int" 2>/dev/null
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fi
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ifconfig "$int" down 2>/dev/null
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ifconfig "$int" destroy 2>/dev/null
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fi
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done
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eoutdent
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eend 0
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}
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