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                 [ interface != "$1" -o -z "$2" ] || eval "$0 $2"
   9         }
  10         config_load network
  11         exit
  12 }
  13
  14 # remove the interface's network state
  15 uci_revert_state network "$1"
  16
  17 include /lib/network
  18 scan_interfaces
  19
  20 cfg=$1
  21 debug "### ifdown $cfg ###"
  22
  23 config_get proto "$cfg" proto
  24 [ -z "$proto" ] && { echo "interface not found."; exit; }
  25
  26 config_get iface "$cfg" device
  27 [ "static" = "$proto" ] && {
  28         env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
  29 }
  30
  31 # call interface stop handler
  32 ( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
  33
  34 # make sure all locks are removed
  35 for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
  36         [ -f "$lock" ] && {
  37                 lock -u "$lock"
  38                 sleep 1
  39         }
  40 done
  41
  42 # kill active ppp daemon and other processes
  43 config_get ifname "$cfg" ifname
  44 pids="$(head -n1 -q /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid 2>/dev/null)"
  45 for pid in $pids; do
  46         [ -d "/proc/$pid" ] && {
  47                 kill $pid
  48                 [ -d "/proc/$pid" ] && {
  49                         sleep 1
  50                         kill -9 $pid 2>/dev/null >/dev/null
  51                 }
  52         }
  53 done
  54 rm -f /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid
  55
  56 config_get ifname "$cfg" ifname
  57 config_get device "$cfg" device
  58
  59 [ ."$device" != ."$ifname" ] || device=
  60 for dev in $ifname $device; do
  61         ifconfig "$dev" 0.0.0.0 down >/dev/null 2>/dev/null
  62 done
  63
  64 config_get iftype "$cfg" type
  65 [ "bridge" = "$iftype" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
  66