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openwrt-xburst/package/firewall/files/firewall.hotplug
jow 5acb7ec58a [package] firewall:
- defer firewall start until the first interface is brought up by hotplug, fixes race conditions on slow devices
	- create a file lock during firewall start and wait for it in hotplug events, prevents race conditions between start and addif
	- start firewall actions in background from hotplug handler since the firewall itself fires further hotplug events which results in a deadlock if not forked off
	- get loaded state direcly from the uci binary since updated value is not recognized by config_get after uci_set_state
	- bump package revision to r2


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21486 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-05-17 12:47:14 +00:00

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#!/bin/sh
# This script is executed as part of the hotplug event with
# HOTPLUG_TYPE=iface, triggered by various scripts when an interface
# is configured (ACTION=ifup) or deconfigured (ACTION=ifdown). The
# interface is available as INTERFACE, the real device as DEVICE.
. /etc/functions.sh
[ "$DEVICE" == "lo" ] && exit 0
. /lib/firewall/core.sh
fw_init
# Wait for firewall if startup is in progress
lock -w /var/lock/firewall.start
case "$ACTION" in
ifup)
fw_is_loaded && {
fw_configure_interface "$INTERFACE" add "$DEVICE" &
} || {
/etc/init.d/firewall enabled && fw_start &
}
;;
ifdown)
fw_is_loaded && fw_configure_interface "$INTERFACE" del "$DEVICE" &
;;
esac