debian/tree/udhcpc/usr/share/udhcpc/default.script

   1 #!/bin/sh
   2 # Busybox udhcpc dispatcher script. Copyright (C) 2009 by Axel Beckert.
   3 #
   4 # Based on the busybox example scripts and the old udhcp source
   5 # package default.* scripts.
   6
   7 RESOLV_CONF="/etc/resolv.conf"
   8
   9 case $1 in
  10     bound|renew)
  11         [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
  12         [ -n "$subnet" ] && NETMASK="netmask $subnet"
  13
  14         /sbin/ifconfig $interface $ip $BROADCAST $NETMASK
  15
  16         if [ -n "$router" ]; then
  17             echo "$0: Resetting default routes"
  18             while /sbin/route del default gw 0.0.0.0 dev $interface; do :; done
  19
  20             metric=0
  21             for i in $router; do
  22                 /sbin/route add default gw $i dev $interface metric $metric
  23                 metric=$(($metric + 1))
  24             done
  25         fi
  26
  27         # Update resolver configuration file
  28         R=""
  29         [ -n "$domain" ] && R="domain $domain
  30 "
  31         for i in $dns; do
  32             echo "$0: Adding DNS $i"
  33             R="${R}nameserver $i
  34 "
  35         done
  36
  37         if [ -x /sbin/resolvconf ]; then
  38             echo -n "$R" | resolvconf -a "${interface}.udhcpc"
  39         else
  40             echo -n "$R" > "$RESOLV_CONF"
  41         fi
  42         ;;
  43
  44     deconfig)
  45         if [ -x /sbin/resolvconf ]; then
  46             resolvconf -d "${interface}.udhcpc"
  47         fi
  48         /sbin/ifconfig $interface 0.0.0.0
  49         ;;
  50
  51     leasefail)
  52         echo "$0: Lease failed: $message"
  53         ;;
  54
  55     nak)
  56         echo "$0: Received a NAK: $message"
  57         ;;
  58
  59     *)
  60         echo "$0: Unknown udhcpc command: $1";
  61         exit 1;
  62         ;;
  63 esac