openwrt/package/base-files/default/sbin/ifup

   1 #!/bin/ash
   2 [ $# = 0 ] && { echo "  $0 <group>"; exit; }
   3 . /etc/functions.sh
   4 . /etc/network.overrides
   5 [ -e /etc/config/network ] && . /etc/config/network
   6
   7 type=$1
   8 debug "### ifup $type ###"
   9
  10 if_proto=$(nvram get ${type}_proto)
  11 if=$(nvram get ${type}_ifname)
  12 [ "${if%%[0-9]}" = "ppp" ] && if=$(nvram get ${if_proto}_ifname)
  13
  14 if_valid $if || exit
  15 mac=$(nvram get ${type}_hwaddr)
  16 $DEBUG ifconfig $if down 2>&-
  17
  18 pidfile=/var/run/${if}.pid
  19 [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
  20
  21 if [ "${if%%[0-9]}" = "br" ]; then
  22         stp=$(nvram get ${type}_stp)
  23         $DEBUG brctl delbr $if 2>&-
  24         $DEBUG brctl addbr $if
  25         $DEBUG brctl setfd $if 0
  26         $DEBUG brctl stp $if ${stp:-0}
  27
  28         for sif in $(nvram get ${type}_ifnames); do
  29                 if_valid $sif || continue
  30                 ${mac:+$DEBUG ifconfig $sif down hw ether $mac}
  31                 $DEBUG ifconfig $sif 0.0.0.0 up
  32                 $DEBUG brctl addif $if $sif
  33         done
  34 else
  35         ${mac:+$DEBUG ifconfig $if down hw ether $mac}
  36 fi
  37
  38 case "$if_proto" in
  39         static)
  40                 ip=$(nvram get ${type}_ipaddr)
  41                 netmask=$(nvram get ${type}_netmask)
  42                 gateway=$(nvram get ${type}_gateway)
  43
  44                 $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
  45                 ${gateway:+$DEBUG route add default gw $gateway}
  46
  47                 [ -f /etc/resolv.conf ] && return
  48
  49                 debug "# --- creating /etc/resolv.conf ---"
  50                 for dns in $(nvram get ${type}_dns); do
  51                         echo "nameserver $dns" >> /etc/resolv.conf
  52                 done
  53         ;;
  54         dhcp)
  55                 ip=$(nvram get ${type}_ipaddr)
  56                 ${DEBUG:-eval} "udhcpc -R -i $if ${ip:+-r $ip} -b -p $pidfile &"
  57         ;;
  58         none|"")
  59         ;;
  60         *)
  61                 [ -x "/sbin/ifup.${if_proto}" ] && { $DEBUG /sbin/ifup.${if_proto} $*; exit; }
  62                 echo "### ifup $type: ignored ${type}_proto=\"$if_proto\" (not supported)"
  63         ;;
  64 esac