package/base-files/default/sbin/ifdown

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