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         [ -e "/tmp/resolv.conf.auto" ] && rm /tmp/resolv.conf.auto
   8         config_cb() {
   9                 [ interface != "$1" -o -z "$2" ] || eval "$0 $2"
  10         }
  11         config_load network
  12         exit
  13 }
  14
  15 include /lib/network
  16 scan_interfaces
  17
  18 cfg=$1
  19 debug "### ifdown $cfg ###"
  20
  21 config_get proto "$cfg" proto
  22 [ -z "$proto" ] && { echo "interface not found."; exit; }
  23
  24 config_get iface "$cfg" device
  25 [ "static" = "$proto" -o "none" = "$proto" ] && {
  26         env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$iface" PROTO="$proto" /sbin/hotplug-call "iface"
  27 }
  28
  29 # call interface stop handler
  30 ( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
  31
  32 # make sure all locks are removed
  33 for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
  34         [ -f "$lock" ] && {
  35                 lock -u "$lock"
  36                 sleep 1
  37         }
  38 done
  39
  40 # kill active ppp daemon and other processes
  41 config_get ifname "$cfg" ifname
  42 pids="$(head -n1 -q /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid 2>/dev/null)"
  43 for pid in $pids; do
  44         [ -d "/proc/$pid" ] && {
  45                 kill $pid
  46                 [ -d "/proc/$pid" ] && {
  47                         sleep 1
  48                         kill -9 $pid 2>/dev/null >/dev/null
  49                 }
  50         }
  51 done
  52 rm -f /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid
  53
  54 config_get ifname "$cfg" ifname
  55 config_get device "$cfg" device
  56
  57 [ ."$device" != ."$ifname" ] || device=
  58 for dev in $ifname $device; do
  59         ifconfig "$dev" 0.0.0.0 down >/dev/null 2>/dev/null
  60 done
  61
  62 config_get iftype "$cfg" type
  63 [ "bridge" = "$iftype" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
  64
  65 # remove the interface's network state
  66 uci_revert_state network "$1"
  67
  68 # revert aliases state as well
  69 config_get aliases "$1" aliases
  70 for config in $aliases; do
  71         uci_revert_state network "$config"
  72 done