ar71xx: add an uci-defaults script for LED configuration migration

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 38097

diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/04_led_migration b/target/linux/ar71xx/base-files/etc/uci-defaults/04_led_migration
new file mode 100755 (executable)
index 0000000..3687c2d
--- /dev/null
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/04_led_migration
@@ -0,0 +1,55 @@
+#!/bin/sh
+#
+# Copyright (C) 2013 OpenWrt.org
+#
+
+LED_OPTIONS_CHANGED=0
+
+. /lib/functions.sh
+
+do_led_update_sysfs()
+{
+       local cfg=$1; shift
+       local tuples="$@"
+       local sysfs
+       local name
+
+       config_get sysfs $cfg sysfs
+       config_get name $cfg name
+
+       [ -z "$sysfs" ] && return
+
+       for tuple in $tuples; do
+               local old=${tuple%=*}
+               local new=${tuple#*=}
+               local new_sysfs
+
+               new_sysfs=$(echo ${sysfs} | sed "s/${old}/${new}/")
+
+               [ "${new_sysfs}" == "${sysfs}" ] && continue
+
+               uci set system.${cfg}.sysfs="${new_sysfs}"
+               LED_OPTIONS_CHANGED=1
+
+               logger -t led-migration "sysfs option of LED \"${name}\" updated to ${new_sysfs}"
+       done;
+}
+
+migrate_leds()
+{
+       config_load system
+       config_foreach do_led_update_sysfs led "$@"
+}
+
+. /lib/ar71xx.sh
+
+board=$(ar71xx_board_name)
+
+case "$board" in
+*)
+       ;;
+esac
+
+[ "$LED_OPTIONS_CHANGED" == "1" ] && uci commit system
+
+exit 0