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 config_load /var/state/network
  15
  16 # remove the interface's network state
  17 FILE=/var/state/network.$$
  18 grep -v "^config_set '$1' " /var/state/network > "$FILE"
  19 mv "$FILE" /var/state/network
  20
  21 include /lib/network
  22 scan_interfaces
  23
  24 cfg=$1
  25 debug "### ifdown $cfg ###"
  26
  27 config_get proto "$cfg" proto
  28 [ -z "$proto" ] && { echo "interface not found."; exit; }
  29
  30 config_get iface "$cfg" device
  31 [ "static" = "$proto" ] && {
  32         env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
  33 }
  34
  35 # call interface stop handler
  36 ( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
  37
  38 # make sure all locks are removed
  39 for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
  40         [ -f "$lock" ] && {
  41                 lock -u "$lock"
  42                 sleep 1
  43         }
  44 done
  45
  46 # kill active ppp daemon and other processes
  47 config_get ifname "$cfg" ifname
  48 pids="$(head -n1 -q /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid 2>/dev/null)"
  49 for pid in $pids; do
  50         [ -d "/proc/$pid" ] && {
  51                 kill $pid
  52                 [ -d "/proc/$pid" ] && {
  53                         sleep 1
  54                         kill -9 $pid 2>/dev/null >/dev/null
  55                 }
  56         }
  57 done
  58 rm -f /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid
  59
  60 config_get ifname "$cfg" ifname
  61 config_get device "$cfg" device
  62
  63 [ ."$device" != ."$ifname" ] || device=
  64 for dev in $ifname $device; do
  65         ifconfig "$dev" 0.0.0.0 down >/dev/null 2>/dev/null
  66 done
  67
  68 config_get iftype "$cfg" type
  69 [ "bridge" = "$iftype" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
  70