package/base-files/files/usr/share/udhcpc/default.script

   1 #!/bin/sh
   2 [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
   3 . /etc/functions.sh
   4 include /lib/network
   5
   6 RESOLV_CONF="/tmp/resolv.conf.auto"
   7
   8 hotplug_event() {
   9         scan_interfaces
  10         for ifc in $interfaces; do
  11                 config_get ifname $ifc ifname
  12                 [ "$ifname" = "$interface" ] || continue
  13
  14                 config_get proto $ifc proto
  15                 [ "$proto" = "dhcp" ] || continue
  16
  17                 env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
  18         done
  19 }
  20
  21 case "$1" in
  22         deconfig)
  23                 ifconfig $interface 0.0.0.0
  24                 hotplug_event ifdown
  25         ;;
  26         renew|bound)
  27                 ifconfig $interface $ip \
  28                 netmask ${subnet:-255.255.255.0} \
  29                 broadcast ${broadcast:-+}
  30
  31                 [ -n "$router" ] && {
  32                         for i in $router ; do
  33                                 echo "adding router $i"
  34                                 route add default gw $i dev $interface
  35                                 valid="$valid|$i"
  36
  37                         done
  38
  39                         echo "deleting old routes"
  40                         $(route -n | awk '/^0.0.0.0\W{9}('$valid')\W/ {next} /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}')
  41                 }
  42
  43                 [ -n "$dns" ] && {
  44                         echo -n > $RESOLV_CONF
  45                         ${domain:+echo search $domain} >> $RESOLV_CONF
  46                         for i in $dns ; do
  47                                 echo "adding dns $i"
  48                                 echo "nameserver $i" >> $RESOLV_CONF
  49                         done
  50                 }
  51
  52                 hotplug_event ifup
  53
  54                 # user rules
  55                 [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
  56         ;;
  57 esac
  58
  59 exit 0