openrc/init.d/network.in
William Hubbs 5bfebbecea Rename shutdown_network setting to keep_network
We were telling users that setting shutdown_network=YES would shut down
the network interfaces during shutdown, but this was exactly the
opposite of what we were doing. The default was YES, which was keeping
the interfaces active.

This keeps the default behavior, but renames the setting to keep_network
which more accurately describes its function, and instructs users to set
it to NO if they want the network interfaces to go down.
2013-02-11 09:45:14 -06:00

355 lines
6.7 KiB
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#!@PREFIX@/sbin/runscript
# Copyright (c) 2009 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.
# This script was inspired by the equivalent rc.d network from NetBSD.
description="Configures network interfaces."
__nl="
"
depend()
{
need localmount
after bootmisc
if [ -n "$(interfaces)" ]; then
provide net
fi
keyword -jail -prefix -vserver
}
uniqify()
{
local result= i=
for i; do
case " $result " in
*" $i "*);;
*) result="$result $i";;
esac
done
echo "${result# *}"
}
reverse()
{
local result= i=
for i; do
result="$i $result"
done
echo "${result# *}"
}
sys_interfaces()
{
case "$RC_UNAME" in
Linux)
local w= rest= i= cmd=$1
while read w rest; do
i=${w%%:*}
[ "$i" != "$w" ] || continue
if [ "$cmd" = u ]; then
ifconfig "$i" | grep -q "[ ]*UP" || continue
fi
printf "%s " "$i"
done </proc/net/dev
;;
*)
ifconfig -l$1
;;
esac
}
tentative()
{
local inet= address= rest=
case "$RC_UNAME" in
Linux)
[ -x /sbin/ip ] || [ -x /bin/ip ] || return 1
[ -n "$(ip -f inet6 addr show tentative)" ]
;;
*)
local inet= address= rest=
LC_ALL=C ifconfig -a | while read inet address rest; do
case "${inet}" in
inet6)
case "${rest}" in
*" "tentative*) return 2;;
esac
;;
esac
done
[ $? = 2 ]
;;
esac
}
auto_interfaces()
{
local ifs= c= f=
case "$RC_UNAME" in
NetBSD)
for c in $(ifconfig -C 2>/dev/null); do
for f in /etc/ifconfig.${c}[0-9]*; do
[ -f "$f" ] && printf "%s" "$f{##*.} "
done
done
;;
*)
for f in /etc/ifconfig.*; do
[ -f "$f" ] && printf "%s" "${f##*.} "
done
for f in /etc/ip.*; do
[ -f "$f" ] && printf "%s" "${f##*.} "
done
;;
esac
echo
}
interfaces()
{
uniqify $(sys_interfaces "$@") $interfaces $(auto_interfaces)
}
dumpargs()
{
local f="$1"
shift
case "$@" in
'') [ -f "$f" ] && cat "$f";;
*"$__nl"*) echo "$@";;
*)
(
set -o noglob
IFS=';'; set -- $@
IFS="$__nl"; echo "$*"
);;
esac
}
intup=false
runip()
{
local int="$1" err=
shift
# Ensure we have a valid broadcast address
case "$@" in
*" broadcast "*|*" brd "*) ;;
*:*) ;; # Ignore IPv6
*) set -- "$@" brd +;;
esac
err=$(LC_ALL=C ip address add "$@" dev "$int" 2>&1)
if [ -z "$err" ]; then
# ip does not bring up the interface when adding addresses
if ! $intup; then
ip link set "$int" up
intup=true
fi
return 0
fi
if [ "$err" = "RTNETLINK answers: File exists" ]; then
ip address del "$@" dev "$int" 2>/dev/null
fi
# Localise the error
ip address add "$@" dev "$int"
}
routeflush()
{
if [ "$RC_UNAME" = Linux ]; then
if [ -x /sbin/ip ] || [ -x /bin/ip ]; then
ip route flush scope global
ip route delete default 2>/dev/null
else
# Sadly we also delete some link routes, but
# this cannot be helped
local dest= gate= net= flags= rest=
route -n | while read dest gate net flags rest; do
[ -z "$net" ] && continue
case "$dest" in
[0-9]*) ;;
*) continue;;
esac
local xtra= netmask="netmask $net"
case "$flags" in
U) continue;;
*H*) flags=-host; netmask=;;
*!*) flags=-net; xtra=reject;;
*) flags=-net;;
esac
route del $flags $dest $netmask $xtra
done
# Erase any default dev eth0 routes
route del default 2>/dev/null
fi
else
route -qn flush
fi
}
runargs()
{
dumpargs "$@" | while read -r args; do
case "$args" in
''|"#"*) ;;
*)
(
eval vebegin "${args#*!}"
eval "${args#*!}"
veend $?
);;
esac
done
}
start()
{
local cr=0 r= int= intv= cmd= args= upcmd=
if [ -z "$domainname" -a -s /etc/defaultdomain ]; then
domainname=$(cat /etc/defaultdomain)
fi
if [ -n "$domainname" ]; then
ebegin "Setting NIS domainname: $domainname"
domainname "$domainname"
eend $?
fi
einfo "Starting network"
routeflush
if [ "$RC_UNAME" = "Linux" ]; then
ifconfig lo 127.0.0.1 netmask 255.0.0.0 || cr=1
route add -net 127.0.0.0 netmask 255.0.0.0 \
gw 127.0.0.1 reject 2>/dev/null
else
ifconfig lo0 127.0.0.1 netmask 255.0.0.0 || cr=1
route -q add -inet 127.0.0.0 -netmask 255.0.0.0 \
127.0.0.1 -reject || cr=1
fi
eindent
for int in $(interfaces); do
local func= cf=
intv=$(shell_var "$int")
eval upcmd=\$ifup_$intv
for func in ip ifconfig; do
eval cmd=\$${func}_$intv
if [ -n "$cmd" -o -f /etc/"$func.$int" ]; then
cf=/etc/"$func.$int"
break
fi
done
[ -n "$cf" -o -n "$upcmd" -o \
-f /etc/ifup."$int" -o -f "$cf" ] || continue
veinfo "$int"
case "$func" in
ip) func=runip; intup=false;;
esac
eindent
runargs /etc/ifup."$int" "$upcmd"
r=0
dumpargs "$cf" "$cmd" | while read -r args; do
case "$args" in
''|"#"*) ;;
"!"*)
(
eval vebegin "${args#*!}"
eval "${args#*!}"
veend $?
);;
*)
(
set -o noglob
eval set -- "$args"
vebegin "$@"
$func "$int" "$@"
veend $?
);;
esac
done
eoutdent
done
eoutdent
eend $cr
# Wait for any inet6 tentative addresses
r=5
while [ $r -gt 0 ]; do
tentative || break
[ $r = 5 ] && vebegin "Waiting for tentative addresses"
sleep 1
: $(( r -= 1 ))
done
if [ $r != 5 ]; then
[ $r != 0 ]
veend $?
fi
if [ -n "$defaultroute" ]; then
ebegin "Setting default route $defaultroute"
route add default $defaultroute
eend $?
elif [ -n "$defaultiproute" ]; then
ebegin "Setting default route $defaultiproute"
ip route add default $defaultiproute
eend $?
fi
if [ -n "$defaultroute6" ]; then
ebegin "Setting default route $defaultroute6"
if [ "$RC_UNAME" = Linux ]; then
routecmd="route -A inet6 add"
else
routecmd="route -inet6 add"
fi
$routecmd default $defaultroute6
eend $?
elif [ -n "$defaultiproute6" ]; then
ebegin "Setting default route $defaultiproute6"
ip -f inet6 route add default $defaultiproute6
eend $?
fi
return 0
}
stop()
{
# Don't stop the network at shutdown.
# We don't use the noshutdown keyword so that we are started again
# correctly if we go back to multiuser.
yesno ${keep_network:-YES} && yesno $RC_GOINGDOWN && return 0
local int= intv= cmd= downcmd= r=
einfo "Stopping network"
routeflush
eindent
for int in $(reverse $(interfaces u)); do
intv=$(shell_var "$int")
eval downcmd=\$ifdown_$intv
eval cmd=\$ip_$intv
[ -z "$cmd" ] && eval cmd=\$ifconfig_$intv
if [ -n "$cmd" -o -f /etc/ip."$int" -o \
-f /etc/ifconfig."$int" -o \
-n "$downcmd" -o -f /etc/ifdown."$int" ];
then
veinfo "$int"
runargs /etc/ifdown."$int" "$downcmd"
if [ -x /sbin/ip ] || [ -x /bin/ip ]; then
# We need to do this, otherwise we may
# fail to add things correctly on restart
ip address flush dev "$int" 2>/dev/null
fi
ifconfig "$int" down 2>/dev/null
ifconfig "$int" destroy 2>/dev/null
fi
done
eoutdent
eend 0
}