90 lines
2.1 KiB
Bash
Executable File
90 lines
2.1 KiB
Bash
Executable File
#!/bin/sh -e
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# very simple dhclient-script. All it cares about is bringing the interface
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# up, and it does not even try to do anything else.
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LOG=/tmp/dhclient.$$.log
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ERR=/tmp/network.$$.err
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log_err() {
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# avoid the need for cat on the image
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echo "On $netif, the following command:" > $ERR
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echo " " "$CMD" >> $ERR
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echo "had errors:" >> $ERR
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while read line; do echo " $line"; done < $LOG >> $ERR
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}
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run() {
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CMD="$@"
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"$@" >> $LOG 2>&1
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}
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setup_interface() {
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ip=$new_ip_address
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mtu=$new_interface_mtu
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mask=$new_subnet_mask
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bcast=$new_broadcast_address
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gw=${new_routers%%,*}
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domain=$new_domain_name
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search=$new_domain_search
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namesrv=$new_domain_name_servers
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hostname=$new_host_name
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[ -f /tmp/net.$netif.override ] && . /tmp/net.$netif.override
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if [ -n "$mtu" ] ; then
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run ip link set $netif down
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run ip link set $netif mtu $mtu
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run ip link set $netif up
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fi
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run ip addr add $ip${mask:+/$mask} ${bcast:+broadcast $bcast} dev $netif
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[ -n "$gw" ] && run ip route add default via $gw
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if [ -n "${search}${domain}" -a -n "$namesrv" ] ; then
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echo search $search $domain > /etc/resolv.conf
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for s in $namesrv; do
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echo nameserver $s >> /etc/resolv.conf
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done
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fi
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if [ ! -e /tmp/hostname.set ] ; then
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[ -n "$hostname" ] && mknod /tmp/hostname.set p && run hostname $hostname
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fi
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:
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}
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PATH=$PATH:/sbin:/usr/sbin
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. /lib/dracut-lib
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if getarg rdnetdebug ; then
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exec >/tmp/dhclient.$interface.$$.out
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exec 2>>/tmp/dhclient.$interface.$$.out
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set -x
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fi
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# Huh? Interface configured?
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[ -f "/tmp/net.$netif.up" ] && exit 0
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# save offending commands and let udev move on if we have an error
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trap 'log_err; exit 0' EXIT
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# We already need a set netif here
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netif=$interface
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case $reason in
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PREINIT)
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run ip link set $netif up
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;;
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BOUND)
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setup_interface
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set | while read line; do
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[ "${line#new_}" = "$line" ] && continue
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echo "$line"
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done >/tmp/dhclient.$netif.dhcpopts
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>/tmp/net.$netif.up
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echo online > /sys/class/net/$netif/uevent ;;
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*) ;;
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esac
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trap - EXIT
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exit 0
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