ip: remove ifcfg script
This script was from olden days of ifcfg. I don't see any distribution using it and it is time to put it out to pasture. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Stephen Hemminger
David Ahern
parent
2c8110881b
commit
adddf30cd8
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@ -18,7 +18,7 @@ RTMONOBJ=rtmon.o
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include ../config.mk
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ALLOBJ=$(IPOBJ) $(RTMONOBJ)
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SCRIPTS=ifcfg routel routef
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SCRIPTS=routel routef
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TARGETS=ip rtmon
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all: $(TARGETS) $(SCRIPTS)
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150
ip/ifcfg
150
ip/ifcfg
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@ -1,150 +0,0 @@
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#! /bin/sh
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# SPDX-License-Identifier: GPL-2.0
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CheckForwarding () {
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local sbase fwd
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sbase=/proc/sys/net/ipv4/conf
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fwd=0
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if [ -d $sbase ]; then
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for dir in $sbase/*/forwarding; do
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fwd=$(( fwd + $(cat "$dir") ))
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done
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else
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fwd=2
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fi
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return $fwd
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}
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RestartRDISC () {
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killall -HUP rdisc || rdisc -fs
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}
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ABCMaskLen () {
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local class;
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class=${1%%.*}
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if [ "$1" = "" -o $class -eq 0 -o $class -ge 224 ]; then return 0
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elif [ $class -ge 224 ]; then return 0
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elif [ $class -ge 192 ]; then return 24
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elif [ $class -ge 128 ]; then return 16
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else return 8; fi
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}
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label="label $1"
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ldev="$1"
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dev=${1%:*}
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if [ "$dev" = "" -o "$1" = "help" ]; then
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echo "Usage: ifcfg DEV [[add|del [ADDR[/LEN]] [PEER] | stop]" 1>&2
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echo " add - add new address" 1>&2
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echo " del - delete address" 1>&2
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echo " stop - completely disable IP" 1>&2
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exit 1
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fi
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shift
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CheckForwarding
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fwd=$?
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if [ $fwd -ne 0 ]; then
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echo "Forwarding is ON or its state is unknown ($fwd). OK, No RDISC." 1>&2
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fi
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deleting=0
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case "$1" in
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add) shift ;;
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stop)
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if [ "$ldev" != "$dev" ]; then
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echo "Cannot stop alias $ldev" 1>&2
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exit 1;
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fi
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ip -4 addr flush dev $dev $label || exit 1
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if [ $fwd -eq 0 ]; then RestartRDISC; fi
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exit 0 ;;
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del*)
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deleting=1; shift ;;
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*)
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esac
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ipaddr=
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pfxlen=
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if [ "$1" != "" ]; then
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ipaddr=${1%/*}
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if [ "$1" != "$ipaddr" ]; then
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pfxlen=${1#*/}
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fi
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if [ "$ipaddr" = "" ]; then
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echo "$1 is bad IP address." 1>&2
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exit 1
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fi
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fi
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shift
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peer=$1
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if [ "$peer" != "" ]; then
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if [ "$pfxlen" != "" -a "$pfxlen" != "32" ]; then
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echo "Peer address with non-trivial netmask." 1>&2
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exit 1
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fi
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pfx="$ipaddr peer $peer"
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else
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if [ "$ipaddr" = "" ]; then
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echo "Missing IP address argument." 1>&2
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exit 1
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fi
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if [ "$pfxlen" = "" ]; then
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ABCMaskLen $ipaddr
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pfxlen=$?
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fi
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pfx="$ipaddr/$pfxlen"
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fi
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if [ "$ldev" = "$dev" -a "$ipaddr" != "" ]; then
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label=
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fi
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if [ $deleting -ne 0 ]; then
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ip addr del $pfx dev $dev $label || exit 1
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if [ $fwd -eq 0 ]; then RestartRDISC; fi
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exit 0
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fi
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if ! ip link set up dev $dev ; then
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echo "Error: cannot enable interface $dev." 1>&2
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exit 1
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fi
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if [ "$ipaddr" = "" ]; then exit 0; fi
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if ! arping -q -c 2 -w 3 -D -I $dev $ipaddr ; then
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echo "Error: some host already uses address $ipaddr on $dev." 1>&2
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exit 1
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fi
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if ! ip address add $pfx brd + dev $dev $label; then
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echo "Error: failed to add $pfx on $dev." 1>&2
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exit 1
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fi
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arping -q -A -c 1 -I $dev $ipaddr
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noarp=$?
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( sleep 2 ;
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arping -q -U -c 1 -I $dev $ipaddr ) >/dev/null 2>&1 </dev/null &
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ip route add unreachable 224.0.0.0/24 >/dev/null 2>&1
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ip route add unreachable 255.255.255.255 >/dev/null 2>&1
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if [ "`ip link ls $dev | grep -c MULTICAST`" -ge 1 ]; then
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ip route add 224.0.0.0/4 dev $dev scope global >/dev/null 2>&1
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fi
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if [ $fwd -eq 0 ]; then
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if [ $noarp -eq 0 ]; then
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ip ro append default dev $dev metric 30000 scope global
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elif [ "$peer" != "" ]; then
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if ping -q -c 2 -w 4 $peer ; then
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ip ro append default via $peer dev $dev metric 30001
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fi
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fi
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RestartRDISC
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fi
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exit 0
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@ -1,48 +0,0 @@
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.TH IFCFG 8 "September 24 2009" "iproute2" "Linux"
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.SH NAME
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ifcfg \- simplistic script which replaces ifconfig IP management
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.SH SYNOPSIS
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.ad l
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.in +8
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.ti -8
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.B ifcfg
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.RI "[ " DEVICE " ] [ " command " ] " ADDRESS " [ " PEER " ] "
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.sp
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.SH DESCRIPTION
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This manual page documents briefly the
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.B ifcfg
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command.
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.PP
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This is a simplistic script replacing one option of
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.B ifconfig
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, namely, IP address management. It not only adds
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addresses, but also carries out Duplicate Address Detection RFC-DHCP,
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sends unsolicited ARP to update the caches of other hosts sharing
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the interface, adds some control routes and restarts Router Discovery
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when it is necessary.
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.SH IFCONFIG - COMMAND SYNTAX
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.SS
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.TP
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.B DEVICE
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- it may have alias, suffix, separated by colon.
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.TP
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.B command
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- add, delete or stop.
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.TP
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.B ADDRESS
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- optionally followed by prefix length.
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.TP
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.B peer
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- optional peer address for pointpoint interfaces.
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.SH NOTES
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This script is not suitable for use with IPv6.
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.SH SEE ALSO
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.RB "IP Command reference " ip-cref.ps
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