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