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 "$proto" ] && { echo "interface not found."; exit; }
  14
  15 # call interface stop handler
  16 ( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
  17
  18 # make sure all locks are removed
  19 for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
  20         [ -f "$lock" ] && {
  21                 lock -u "$lock"
  22                 sleep 1
  23         }
  24 done
  25
  26 # kill active ppp daemon and other processes
  27 config_get ifname "$cfg" ifname
  28 pids="$(cat /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid 2>/dev/null)"
  29 for pid in $pids; do
  30         [ -d "/proc/$pid" ] && {
  31                 kill $pid
  32                 [ -d "/proc/$pid" ] && {
  33                         sleep 1
  34                         kill -9 $pid 2>/dev/null >/dev/null
  35                 }
  36         }
  37 done
  38 rm -f /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid
  39
  40 config_get ifname "$cfg" ifname
  41 config_get device "$cfg" ifname
  42
  43 [ ."$device" != ."$ifname" ] || device=
  44 for dev in $ifname $device; do
  45         ifconfig "$ifname" 0.0.0.0 down >/dev/null 2>/dev/null
  46 done
  47
  48 config_get iftype "$cfg" type
  49 [ "$iftype" = "bridge" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
  50