1 files changed, 55 insertions, 0 deletions
diff --git a/package/base-files/files/sbin/ifdown b/package/base-files/files/sbin/ifdown
new file mode 100755
index 000000000..26d0e626d
--- /dev/null
+++ b/package/base-files/files/sbin/ifdown
@@ -0,0 +1,55 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+[ $# = 0 ] && { echo "  $0 <group>"; exit; }
+. /etc/functions.sh
+include /lib/network
+scan_interfaces
+
+cfg=$1
+debug "### ifdown $cfg ###"
+
+config_get proto "$cfg" proto
+[ -z "$proto" ] && { echo "interface not found."; exit; }
+
+config_get iface "$cfg" device
+[ "$proto" = "static" ] && {
+	env -i ACTION="ifdown" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug "iface" &
+}
+
+# call interface stop handler
+( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
+
+# make sure all locks are removed
+for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
+	[ -f "$lock" ] && {
+		lock -u "$lock"
+		sleep 1
+	}
+done
+
+# kill active ppp daemon and other processes
+config_get ifname "$cfg" ifname
+pids="$(head -n1 -q /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid 2>/dev/null)"
+for pid in $pids; do 
+	[ -d "/proc/$pid" ] && {
+		kill $pid
+		[ -d "/proc/$pid" ] && {
+			sleep 1
+			kill -9 $pid 2>/dev/null >/dev/null
+		}
+	}
+done
+rm -f /var/run/${ifname}.pid /var/run/ppp-${cfg}.pid
+
+config_get ifname "$cfg" ifname
+config_get device "$cfg" ifname
+
+[ ."$device" != ."$ifname" ] || device=
+for dev in $ifname $device; do
+	ifconfig "$ifname" 0.0.0.0 down >/dev/null 2>/dev/null
+done
+
+config_get iftype "$cfg" type
+[ "$iftype" = "bridge" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
+