package/base-files/default/sbin/ifup

   1 #!/bin/ash
   2 [ $# = 0 ] && { echo "  $0 <group>"; exit; }
   3 . /etc/functions.sh
   4 . /etc/network.overrides
   5 [ "$FAILSAFE" != "true" -a -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_proto}" = "pppoa" ] || {
  12         if=$(nvram get ${type}_ifname)
  13         [ "${if%%[0-9]}" = "ppp" ] && if=$(nvram get ${if_proto}_ifname)
  14
  15         if_valid $if || exit
  16         mac=$(nvram get ${type}_hwaddr)
  17         $DEBUG ifconfig $if down 2>&-
  18
  19         pidfile=/var/run/${if}.pid
  20         [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
  21
  22         if [ "${if%%[0-9]}" = "br" ]; then
  23                 stp=$(nvram get ${type}_stp)
  24                 $DEBUG brctl delbr $if 2>&-
  25                 $DEBUG brctl addbr $if
  26                 $DEBUG brctl setfd $if 0
  27                 $DEBUG brctl stp $if ${stp:-0}
  28
  29                 for sif in $(nvram get ${type}_ifnames); do
  30                         if_valid $sif || continue
  31                         ${mac:+$DEBUG ifconfig $sif down hw ether $mac}
  32                         $DEBUG ifconfig $sif 0.0.0.0 up
  33                         $DEBUG brctl addif $if $sif
  34                 done
  35         else
  36                 ${mac:+$DEBUG ifconfig $if down hw ether $mac}
  37         fi
  38 }
  39
  40 case "$if_proto" in
  41         static)
  42                 ip=$(nvram get ${type}_ipaddr)
  43                 netmask=$(nvram get ${type}_netmask)
  44                 gateway=$(nvram get ${type}_gateway)
  45
  46                 $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
  47                 ${gateway:+$DEBUG route add default gw $gateway}
  48
  49                 [ -f /etc/resolv.conf ] && return
  50
  51                 debug "# --- creating /etc/resolv.conf ---"
  52                 for dns in $(nvram get ${type}_dns); do
  53                         echo "nameserver $dns" >> /etc/resolv.conf
  54                 done
  55         ;;
  56         dhcp)
  57                 ip=$(nvram get ${type}_ipaddr)
  58                 ${DEBUG:-eval} "udhcpc -R -i $if ${ip:+-r $ip} -b -p $pidfile &"
  59         ;;
  60         none|"")
  61         ;;
  62         *)
  63                 [ -x "/sbin/ifup.${if_proto}" ] && { $DEBUG /sbin/ifup.${if_proto} $*; exit; }
  64                 echo "### ifup $type: ignored ${type}_proto=\"$if_proto\" (not supported)"
  65         ;;
  66 esac