package/base-files/files/sbin/ifdown

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3
   4 . /etc/functions.sh
   5 [ $# = 0 ] && { echo "  $0 <group>"; exit; }
   6 [ "x$1" = "x-a" ] && {
   7         config_cb() {
   8                 [ -z "$2" ] || eval "$0 $2"
   9         }
  10         config_load network
  11         exit
  12 }
  13 include /lib/network
  14 scan_interfaces
  15
  16 cfg=$1
  17 debug "### ifdown $cfg ###"
  18
  19 config_get proto "$cfg" proto
  20 [ -z "$proto" ] && { echo "interface not found."; exit; }
  21
  22 config_get iface "$cfg" device
  23 [ "$proto" = "static" ] && {
  24         env -i ACTION="ifdown" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
  25 }
  26
  27 # call interface stop handler
  28 ( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
  29
  30 # make sure all locks are removed
  31 for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
  32         [ -f "$lock" ] && {
  33                 lock -u "$lock"
  34                 sleep 1
  35         }
  36 done
  37
  38 # kill active ppp daemon and other processes
  39 config_get ifname "$cfg" ifname
  40 pids="$(head -n1 -q /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid 2>/dev/null)"
  41 for pid in $pids; do
  42         [ -d "/proc/$pid" ] && {
  43                 kill $pid
  44                 [ -d "/proc/$pid" ] && {
  45                         sleep 1
  46                         kill -9 $pid 2>/dev/null >/dev/null
  47                 }
  48         }
  49 done
  50 rm -f /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid
  51
  52 config_get ifname "$cfg" ifname
  53 config_get device "$cfg" device
  54
  55 [ ."$device" != ."$ifname" ] || device=
  56 for dev in $ifname $device; do
  57         ifconfig "$dev" 0.0.0.0 down >/dev/null 2>/dev/null
  58 done
  59
  60 config_get iftype "$cfg" type
  61 [ "$iftype" = "bridge" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
  62