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