#!/bin/sh # Original script by Andreas Teuchert # Modified by Frédéric Boiteux PREREQ="blacklist udev" prereqs() { echo "$PREREQ" } case $1 in # get pre-requisites prereqs) prereqs exit 0 ;; esac # Boot type in initramfs's config bootconf=$(egrep '^BOOT=' /conf/initramfs.conf | tail -1) # can be superseded by command line (used by Debian-Live's netboot for example) for ARGUMENT in $(cat /proc/cmdline); do case "${ARGUMENT}" in netboot=*) NETBOOT="${ARGUMENT#netboot=}" ;; esac done if [ "$bootconf" != "BOOT=nfs" ] && [ "$NETBOOT" = "" ]; then # Not a net boot : nothing to do exit 0 fi # be sure this has been run (*should* be done by scripts/init-premount/udev) if [ -x /sbin/udevadm ] then # lenny udevadm trigger udevadm settle else # etch udevtrigger udevsettle fi # we want to do some basic IP modprobe -q af_packet # Available Ethernet interfaces ? l_interfaces=$(cd /sys/class/net/ && ls -d eth* 2>/dev/null) if [ $(echo $l_interfaces | wc -w) -lt 2 ]; then # only one interface : no choice echo "DEVICE=$l_interfaces" >> /conf/param.conf exit 0 fi while true; do echo -n "Looking for a connected Ethernet interface ..." for interface in $l_interfaces; do # ATTR{carrier} is not set if this is not done echo -n " $interface ?" ipconfig -c none -d $interface -t 1 >/dev/null 2>&1 done echo '' for step in 1 2 3 4 5; do for interface in $l_interfaces; do carrier=$(cat /sys/class/net/$interface/carrier \ 2>/dev/null) # link detected if [ "$carrier" = 1 ]; then echo " found $interface." # inform initrd's init script : echo "DEVICE=$interface" >> /conf/param.conf exit 0 fi done # wait a bit sleep 1 done done