From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 package/base-files/files/lib/functions.sh          | 325 +++++++++++++++++++
 package/base-files/files/lib/functions/leds.sh     |  72 +++++
 package/base-files/files/lib/functions/network.sh  | 268 ++++++++++++++++
 package/base-files/files/lib/functions/preinit.sh  |  88 ++++++
 package/base-files/files/lib/functions/service.sh  | 103 ++++++
 package/base-files/files/lib/functions/system.sh   | 112 +++++++
 .../files/lib/functions/uci-defaults-new.sh        | 302 ++++++++++++++++++
 .../base-files/files/lib/functions/uci-defaults.sh | 345 +++++++++++++++++++++
 .../files/lib/preinit/02_default_set_state         |   7 +
 .../files/lib/preinit/10_indicate_failsafe         |  17 +
 .../files/lib/preinit/10_indicate_preinit          |  47 +++
 package/base-files/files/lib/preinit/10_sysinfo    |  10 +
 .../base-files/files/lib/preinit/30_failsafe_wait  |  96 ++++++
 .../files/lib/preinit/40_run_failsafe_hook         |  12 +
 .../files/lib/preinit/50_indicate_regular_preinit  |  10 +
 .../base-files/files/lib/preinit/70_initramfs_test |  13 +
 package/base-files/files/lib/preinit/80_mount_root |  15 +
 .../files/lib/preinit/99_10_failsafe_login         |  17 +
 .../base-files/files/lib/preinit/99_10_run_init    |   9 +
 package/base-files/files/lib/upgrade/common.sh     | 248 +++++++++++++++
 .../files/lib/upgrade/keep.d/base-files-essential  |  10 +
 21 files changed, 2126 insertions(+)
 create mode 100755 package/base-files/files/lib/functions.sh
 create mode 100644 package/base-files/files/lib/functions/leds.sh
 create mode 100644 package/base-files/files/lib/functions/network.sh
 create mode 100644 package/base-files/files/lib/functions/preinit.sh
 create mode 100644 package/base-files/files/lib/functions/service.sh
 create mode 100644 package/base-files/files/lib/functions/system.sh
 create mode 100755 package/base-files/files/lib/functions/uci-defaults-new.sh
 create mode 100644 package/base-files/files/lib/functions/uci-defaults.sh
 create mode 100644 package/base-files/files/lib/preinit/02_default_set_state
 create mode 100644 package/base-files/files/lib/preinit/10_indicate_failsafe
 create mode 100644 package/base-files/files/lib/preinit/10_indicate_preinit
 create mode 100644 package/base-files/files/lib/preinit/10_sysinfo
 create mode 100644 package/base-files/files/lib/preinit/30_failsafe_wait
 create mode 100644 package/base-files/files/lib/preinit/40_run_failsafe_hook
 create mode 100644 package/base-files/files/lib/preinit/50_indicate_regular_preinit
 create mode 100644 package/base-files/files/lib/preinit/70_initramfs_test
 create mode 100644 package/base-files/files/lib/preinit/80_mount_root
 create mode 100644 package/base-files/files/lib/preinit/99_10_failsafe_login
 create mode 100644 package/base-files/files/lib/preinit/99_10_run_init
 create mode 100644 package/base-files/files/lib/upgrade/common.sh
 create mode 100644 package/base-files/files/lib/upgrade/keep.d/base-files-essential

(limited to 'package/base-files/files/lib')

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
new file mode 100755
index 0000000..dde1ac4
--- /dev/null
+++ b/package/base-files/files/lib/functions.sh
@@ -0,0 +1,325 @@
+#!/bin/sh
+# Copyright (C) 2006-2014 OpenWrt.org
+# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
+# Copyright (C) 2010 Vertical Communications
+
+
+debug () {
+	${DEBUG:-:} "$@"
+}
+
+# newline
+N="
+"
+
+_C=0
+NO_EXPORT=1
+LOAD_STATE=1
+LIST_SEP=" "
+
+append() {
+	local var="$1"
+	local value="$2"
+	local sep="${3:- }"
+
+	eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+}
+
+list_contains() {
+	local var="$1"
+	local str="$2"
+	local val
+
+	eval "val=\" \${$var} \""
+	[ "${val%% $str *}" != "$val" ]
+}
+
+config_load() {
+	[ -n "$IPKG_INSTROOT" ] && return 0
+	uci_load "$@"
+}
+
+reset_cb() {
+	config_cb() { return 0; }
+	option_cb() { return 0; }
+	list_cb() { return 0; }
+}
+reset_cb
+
+package() {
+	return 0
+}
+
+config () {
+	local cfgtype="$1"
+	local name="$2"
+
+	export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
+	name="${name:-cfg$CONFIG_NUM_SECTIONS}"
+	append CONFIG_SECTIONS "$name"
+	[ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
+	export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
+	export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
+}
+
+option () {
+	local varname="$1"; shift
+	local value="$*"
+
+	export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
+	[ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
+}
+
+list() {
+	local varname="$1"; shift
+	local value="$*"
+	local len
+
+	config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
+	[ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
+	len=$(($len + 1))
+	config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
+	config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
+	append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
+	list_cb "$varname" "$*"
+}
+
+config_unset() {
+	config_set "$1" "$2" ""
+}
+
+# config_get <variable> <section> <option> [<default>]
+# config_get <section> <option>
+config_get() {
+	case "$3" in
+		"") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
+		*)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
+	esac
+}
+
+# config_get_bool <variable> <section> <option> [<default>]
+config_get_bool() {
+	local _tmp
+	config_get _tmp "$2" "$3" "$4"
+	case "$_tmp" in
+		1|on|true|yes|enabled) _tmp=1;;
+		0|off|false|no|disabled) _tmp=0;;
+		*) _tmp="$4";;
+	esac
+	export ${NO_EXPORT:+-n} "$1=$_tmp"
+}
+
+config_set() {
+	local section="$1"
+	local option="$2"
+	local value="$3"
+	local old_section="$CONFIG_SECTION"
+
+	CONFIG_SECTION="$section"
+	option "$option" "$value"
+	CONFIG_SECTION="$old_section"
+}
+
+config_foreach() {
+	local ___function="$1"
+	[ "$#" -ge 1 ] && shift
+	local ___type="$1"
+	[ "$#" -ge 1 ] && shift
+	local section cfgtype
+
+	[ -z "$CONFIG_SECTIONS" ] && return 0
+	for section in ${CONFIG_SECTIONS}; do
+		config_get cfgtype "$section" TYPE
+		[ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
+		eval "$___function \"\$section\" \"\$@\""
+	done
+}
+
+config_list_foreach() {
+	[ "$#" -ge 3 ] || return 0
+	local section="$1"; shift
+	local option="$1"; shift
+	local function="$1"; shift
+	local val
+	local len
+	local c=1
+
+	config_get len "${section}" "${option}_LENGTH"
+	[ -z "$len" ] && return 0
+	while [ $c -le "$len" ]; do
+		config_get val "${section}" "${option}_ITEM$c"
+		eval "$function \"\$val\" \"\$@\""
+		c="$(($c + 1))"
+	done
+}
+
+insert_modules() {
+	for m in $*; do
+		if [ -f /etc/modules.d/$m ]; then
+			sed 's/^[^#]/insmod &/' /etc/modules.d/$m | ash 2>&- || :
+		else
+			modprobe $m
+		fi
+	done
+}
+
+default_prerm() {
+	local name
+	name=$(basename ${1%.*})
+	[ -f /usr/lib/opkg/info/${name}.prerm-pkg ] && . /usr/lib/opkg/info/${name}.prerm-pkg
+	for i in `cat /usr/lib/opkg/info/${name}.list | grep "^/etc/init.d/"`; do
+		$i disable
+		$i stop
+	done
+}
+
+default_postinst() {
+	local root="${IPKG_INSTROOT}"
+	local pkgname="$(basename ${1%.*})"
+	local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
+	local ret=0
+
+	if [ -n "$rusers" ]; then
+		local tuple oIFS="$IFS"
+		for tuple in $rusers; do
+			local uid gid uname gname
+
+			IFS=":"
+			set -- $tuple; uname="$1"; gname="$2"
+			IFS="="
+			set -- $uname; uname="$1"; uid="$2"
+			set -- $gname; gname="$1"; gid="$2"
+			IFS="$oIFS"
+
+			if [ -n "$gname" ] && [ -n "$gid" ]; then
+				group_exists "$gname" || group_add "$gname" "$gid"
+			elif [ -n "$gname" ]; then
+				group_add_next "$gname"; gid=$?
+			fi
+
+			if [ -n "$uname" ]; then
+				user_exists "$uname" || user_add "$uname" "$uid" "$gid"
+			fi
+
+			if [ -n "$uname" ] && [ -n "$gname" ]; then
+				group_add_user "$gname" "$uname"
+			fi
+
+			unset uid gid uname gname
+		done
+	fi
+
+	if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
+		( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
+		ret=$?
+	fi
+
+	[ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
+
+	if [ "$PKG_UPGRADE" != "1" ]; then
+		local shell="$(which bash)"
+		for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
+			if [ -n "$root" ]; then
+				${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
+			else
+				"$i" enable
+				"$i" start
+			fi
+		done
+	fi
+
+	return $ret
+}
+
+include() {
+	local file
+
+	for file in $(ls $1/*.sh 2>/dev/null); do
+		. $file
+	done
+}
+
+find_mtd_index() {
+	local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
+	local INDEX="${PART##mtd}"
+
+	echo ${INDEX}
+}
+
+find_mtd_part() {
+	local INDEX=$(find_mtd_index "$1")
+	local PREFIX=/dev/mtdblock
+
+	[ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
+	echo "${INDEX:+$PREFIX$INDEX}"
+}
+
+group_add() {
+	local name="$1"
+	local gid="$2"
+	local rc
+	[ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
+	[ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
+	echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
+	rc=$?
+	[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
+	return $rc
+}
+
+group_exists() {
+	grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
+}
+
+group_add_next() {
+	local gid gids
+	gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
+	[ -n "$gid" ] && return $gid
+	gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
+	gid=100
+	while [ -n "$(echo $gids | grep $gid)" ] ; do
+	        gid=$((gid + 1))
+	done
+	group_add $1 $gid
+	return $gid
+}
+
+group_add_user() {
+	local grp delim=","
+	grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
+	[ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
+	[ -n "$(echo $grp | grep ":$")" ] && delim=""
+	[ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
+	sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
+	[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
+}
+
+user_add() {
+	local name="${1}"
+	local uid="${2}"
+	local gid="${3}"
+	local desc="${4:-$1}"
+	local home="${5:-/var/run/$1}"
+	local shell="${6:-/bin/false}"
+	local rc
+	[ -z "$uid" ] && {
+		uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
+		uid=100
+		while [ -n "$(echo $uids | grep $uid)" ] ; do
+		        uid=$((uid + 1))
+		done
+	}
+	[ -z "$gid" ] && gid=$uid
+	[ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
+	[ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
+	echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
+	echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
+	rc=$?
+	[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
+	return $rc
+}
+
+user_exists() {
+	grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
+}
+
+[ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh
diff --git a/package/base-files/files/lib/functions/leds.sh b/package/base-files/files/lib/functions/leds.sh
new file mode 100644
index 0000000..d4d4512
--- /dev/null
+++ b/package/base-files/files/lib/functions/leds.sh
@@ -0,0 +1,72 @@
+#!/bin/sh
+# Copyright (C) 2013 OpenWrt.org
+
+led_set_attr() {
+	[ -f "/sys/class/leds/$1/$2" ] && echo "$3" > "/sys/class/leds/$1/$2"
+}
+
+led_timer() {
+	led_set_attr $1 "trigger" "timer"
+	led_set_attr $1 "delay_on" "$2"
+	led_set_attr $1 "delay_off" "$3"
+}
+
+led_on() {
+	led_set_attr $1 "trigger" "none"
+	led_set_attr $1 "brightness" 255
+}
+
+led_off() {
+	led_set_attr $1 "trigger" "none"
+	led_set_attr $1 "brightness" 0
+}
+
+led_morse() {
+	led_set_attr $1 "trigger" "morse"
+	led_set_attr $1 "delay" "$2"
+	led_set_attr $1 "message" "$3"
+}
+
+status_led_set_timer() {
+	led_timer $status_led "$1" "$2"
+	[ -n "$status_led2" ] && led_timer $status_led2 "$1" "$2"
+}
+
+status_led_set_heartbeat() {
+	led_set_attr $status_led "trigger" "heartbeat"
+}
+
+status_led_set_morse() {
+	led_morse $status_led "$1" "$2"
+	[ -n "$status_led2" ] && led_morse $status_led2 "$1" "$2"
+}
+
+status_led_on() {
+	led_on $status_led
+	[ -n "$status_led2" ] && led_on $status_led2
+}
+
+status_led_off() {
+	led_off $status_led
+	[ -n "$status_led2" ] && led_off $status_led2
+}
+
+status_led_blink_slow() {
+	led_timer $status_led 1000 1000
+}
+
+status_led_blink_fast() {
+	led_timer $status_led 100 100
+}
+
+status_led_blink_preinit() {
+	led_timer $status_led 100 100
+}
+
+status_led_blink_failsafe() {
+	led_timer $status_led 50 50
+}
+
+status_led_blink_preinit_regular() {
+	led_timer $status_led 200 200
+}
diff --git a/package/base-files/files/lib/functions/network.sh b/package/base-files/files/lib/functions/network.sh
new file mode 100644
index 0000000..1b0c717
--- /dev/null
+++ b/package/base-files/files/lib/functions/network.sh
@@ -0,0 +1,268 @@
+# 1: destination variable
+# 2: interface
+# 3: path
+# 4: separator
+# 5: limit
+__network_ifstatus() {
+	local __tmp
+
+	[ -z "$__NETWORK_CACHE" ] && \
+		export __NETWORK_CACHE="$(ubus call network.interface dump)"
+
+	__tmp="$(jsonfilter ${4:+-F "$4"} ${5:+-l "$5"} -s "$__NETWORK_CACHE" -e "$1=@.interface${2:+[@.interface='$2']}$3")"
+
+	[ -z "$__tmp" ] && \
+		unset "$1" && \
+		return 1
+
+	eval "$__tmp"
+}
+
+# determine first IPv4 address of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_ipaddr() {
+	__network_ifstatus "$1" "$2" "['ipv4-address'][0].address";
+}
+
+# determine first IPv6 address of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_ipaddr6() {
+	local __addr
+
+	if __network_ifstatus "__addr" "$2" "['ipv6-address','ipv6-prefix-assignment'][0].address"; then
+		case "$__addr" in
+			*:)	export "$1=${__addr}1" ;;
+			*)	export "$1=${__addr}" ;;
+		esac
+		return 0
+	fi
+
+	unset $1
+	return 1
+}
+
+# determine first IPv4 subnet of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_subnet() {
+	__network_ifstatus "$1" "$2" "['ipv4-address'][0]['address','mask']" "/"
+}
+
+# determine first IPv6 subnet of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_subnet6() {
+	__network_ifstatus "$1" "$2" "['ipv6-address'][0]['address','mask']" "/"
+}
+
+# determine first IPv6 prefix of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_prefix6() {
+	__network_ifstatus "$1" "$2" "['ipv6-prefix'][0]['address','mask']" "/"
+}
+
+# determine all IPv4 addresses of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_ipaddrs() {
+	__network_ifstatus "$1" "$2" "['ipv4-address'][*].address"
+}
+
+# determine all IPv6 addresses of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_ipaddrs6() {
+	local __addr
+	local __list=""
+
+	if __network_ifstatus "__addr" "$2" "['ipv6-address','ipv6-prefix-assignment'][*].address"; then
+		for __addr in $__addr; do
+			case "$__addr" in
+				*:) __list="${__list:+$__list }${__addr}1" ;;
+				*)  __list="${__list:+$__list }${__addr}"  ;;
+			esac
+		done
+
+		export "$1=$__list"
+		return 0
+	fi
+
+	unset "$1"
+	return 1
+}
+
+# determine all IP addresses of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_ipaddrs_all() {
+	local __addr
+	local __list=""
+
+	if __network_ifstatus "__addr" "$2" "['ipv4-address','ipv6-address','ipv6-prefix-assignment'][*].address"; then
+		for __addr in $__addr; do
+			case "$__addr" in
+				*:) __list="${__list:+$__list }${__addr}1" ;;
+				*)  __list="${__list:+$__list }${__addr}"  ;;
+			esac
+		done
+
+		export "$1=$__list"
+		return 0
+	fi
+
+	unset "$1"
+	return 1
+}
+
+# determine all IPv4 subnets of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_subnets() {
+	__network_ifstatus "$1" "$2" "['ipv4-address'][*]['address','mask']" "/ "
+}
+
+# determine all IPv6 subnets of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_subnets6() {
+	local __addr
+	local __list=""
+
+	if __network_ifstatus "__addr" "$2" "['ipv6-address','ipv6-prefix-assignment'][*]['address','mask']" "/ "; then
+		for __addr in $__addr; do
+			case "$__addr" in
+				*:/*) __list="${__list:+$__list }${__addr%/*}1/${__addr##*/}" ;;
+				*)    __list="${__list:+$__list }${__addr}"                   ;;
+			esac
+		done
+
+		export "$1=$__list"
+		return 0
+	fi
+
+	unset "$1"
+	return 1
+}
+
+# determine all IPv6 prefixes of given logical interface
+# 1: destination variable
+# 2: interface
+network_get_prefixes6() {
+	__network_ifstatus "$1" "$2" "['ipv6-prefix'][*]['address','mask']" "/ "
+}
+
+# determine IPv4 gateway of given logical interface
+# 1: destination variable
+# 2: interface
+# 3: consider inactive gateway if "true" (optional)
+network_get_gateway() {
+	__network_ifstatus "$1" "$2" ".route[@.target='0.0.0.0' && !@.table].nexthop" "" 1 && \
+		return 0
+
+	[ "$3" = 1 -o "$3" = "true" ] && \
+		__network_ifstatus "$1" "$2" ".inactive.route[@.target='0.0.0.0' && !@.table].nexthop" "" 1
+}
+
+# determine IPv6 gateway of given logical interface
+# 1: destination variable
+# 2: interface
+# 3: consider inactive gateway if "true" (optional)
+network_get_gateway6() {
+	__network_ifstatus "$1" "$2" ".route[@.target='::' && !@.table].nexthop" "" 1 && \
+		return 0
+
+	[ "$3" = 1 -o "$3" = "true" ] && \
+		__network_ifstatus "$1" "$2" ".inactive.route[@.target='::' && !@.table].nexthop" "" 1
+}
+
+# determine the DNS servers of the given logical interface
+# 1: destination variable
+# 2: interface
+# 3: consider inactive servers if "true" (optional)
+network_get_dnsserver() {
+	__network_ifstatus "$1" "$2" "['dns-server'][*]" && return 0
+
+	[ "$3" = 1 -o "$3" = "true" ] && \
+		__network_ifstatus "$1" "$2" ".inactive['dns-server'][*]"
+}
+
+# determine the domains of the given logical interface
+# 1: destination variable
+# 2: interface
+# 3: consider inactive domains if "true" (optional)
+network_get_dnssearch() {
+	__network_ifstatus "$1" "$2" "['dns-search'][*]" && return 0
+
+	[ "$3" = 1 -o "$3" = "true" ] && \
+		__network_ifstatus "$1" "$2" ".inactive['dns-search'][*]"
+}
+
+
+# 1: destination variable
+# 2: addr
+# 3: inactive
+__network_wan()
+{
+	__network_ifstatus "$1" "" \
+		"[@.route[@.target='$2' && !@.table]].interface" "" 1 && \
+			return 0
+
+	[ "$3" = 1 -o "$3" = "true" ] && \
+		__network_ifstatus "$1" "" \
+			"[@.inactive.route[@.target='$2' && !@.table]].interface" "" 1
+}
+
+# find the logical interface which holds the current IPv4 default route
+# 1: destination variable
+# 2: consider inactive default routes if "true" (optional)
+network_find_wan() { __network_wan "$1" "0.0.0.0" "$2"; }
+
+# find the logical interface which holds the current IPv6 default route
+# 1: destination variable
+# 2: consider inactive dafault routes if "true" (optional)
+network_find_wan6() { __network_wan "$1" "::" "$2"; }
+
+# test whether the given logical interface is running
+# 1: interface
+network_is_up()
+{
+	local __up
+	__network_ifstatus "__up" "$1" ".up" && [ "$__up" = 1 ]
+}
+
+# determine the protocol of the given logical interface
+# 1: destination variable
+# 2: interface
+network_get_protocol() { __network_ifstatus "$1" "$2" ".proto"; }
+
+# determine the layer 3 linux network device of the given logical interface
+# 1: destination variable
+# 2: interface
+network_get_device() { __network_ifstatus "$1" "$2" ".l3_device"; }
+
+# determine the layer 2 linux network device of the given logical interface
+# 1: destination variable
+# 2: interface
+network_get_physdev() { __network_ifstatus "$1" "$2" ".device"; }
+
+# defer netifd actions on the given linux network device
+# 1: device name
+network_defer_device()
+{
+	ubus call network.device set_state \
+		"$(printf '{ "name": "%s", "defer": true }' "$1")" 2>/dev/null
+}
+
+# continue netifd actions on the given linux network device
+# 1: device name
+network_ready_device()
+{
+	ubus call network.device set_state \
+		"$(printf '{ "name": "%s", "defer": false }' "$1")" 2>/dev/null
+}
+
+# flush the internal value cache to force re-reading values from ubus
+network_flush_cache() { unset __NETWORK_CACHE; }
diff --git a/package/base-files/files/lib/functions/preinit.sh b/package/base-files/files/lib/functions/preinit.sh
new file mode 100644
index 0000000..57862a1
--- /dev/null
+++ b/package/base-files/files/lib/functions/preinit.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+# Copyright (C) 2006-2013 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+boot_hook_splice_start() {
+	export -n PI_HOOK_SPLICE=1
+}
+
+boot_hook_splice_finish() {
+	local hook
+	for hook in $PI_STACK_LIST; do
+		local v; eval "v=\${${hook}_splice:+\$${hook}_splice }$hook"
+		export -n "${hook}=${v% }"
+		export -n "${hook}_splice="
+	done
+	export -n PI_HOOK_SPLICE=
+}
+
+boot_hook_init() {
+	local hook="${1}_hook"
+	export -n "PI_STACK_LIST=${PI_STACK_LIST:+$PI_STACK_LIST }$hook"
+	export -n "$hook="
+}
+
+boot_hook_add() {
+	local hook="${1}_hook${PI_HOOK_SPLICE:+_splice}"
+	local func="${2}"
+
+	[ -n "$func" ] && {
+		local v; eval "v=\$$hook"
+		export -n "$hook=${v:+$v }$func"
+	}
+}
+
+boot_hook_shift() {
+	local hook="${1}_hook"
+	local rvar="${2}"
+
+	local v; eval "v=\$$hook"
+	[ -n "$v" ] && {
+		local first="${v%% *}"
+
+		[ "$v" != "${v#* }" ] && \
+			export -n "$hook=${v#* }" || \
+			export -n "$hook="
+
+		export -n "$rvar=$first"
+		return 0
+	}
+
+	return 1
+}
+
+boot_run_hook() {
+	local hook="$1"
+	local func
+
+	while boot_hook_shift "$hook" func; do
+		local ran; eval "ran=\$PI_RAN_$func"
+		[ -n "$ran" ] || {
+			export -n "PI_RAN_$func=1"
+			$func "$1" "$2"
+		}
+	done
+}
+
+pivot() { # <new_root> <old_root>
+	/bin/mount -o noatime,move /proc $1/proc && \
+	pivot_root $1 $1$2 && {
+		/bin/mount -o noatime,move $2/dev /dev
+		/bin/mount -o noatime,move $2/tmp /tmp
+		/bin/mount -o noatime,move $2/sys /sys 2>&-
+		/bin/mount -o noatime,move $2/overlay /overlay 2>&-
+		return 0
+	}
+}
+
+fopivot() { # <rw_root> <work_dir> <ro_root> <dupe?>
+	/bin/mount -o noatime,lowerdir=/,upperdir=$1,workdir=$2 -t overlay "overlayfs:$1" /mnt
+	pivot /mnt $3
+}
+
+ramoverlay() {
+	mkdir -p /tmp/root
+	/bin/mount -t tmpfs -o noatime,mode=0755 root /tmp/root
+	mkdir -p /tmp/root/root /tmp/root/work
+	fopivot /tmp/root/root /tmp/root/work /rom 1
+}
diff --git a/package/base-files/files/lib/functions/service.sh b/package/base-files/files/lib/functions/service.sh
new file mode 100644
index 0000000..3d08e14
--- /dev/null
+++ b/package/base-files/files/lib/functions/service.sh
@@ -0,0 +1,103 @@
+#
+# service: simple wrapper around start-stop-daemon
+#
+# Usage: service ACTION EXEC ARGS...
+#
+# Action:
+#   -C	check if EXEC is alive
+#   -S	start EXEC, passing it ARGS as its arguments
+#   -K	kill EXEC, sending it a TERM signal if not specified otherwise
+#
+# Environment variables exposed:
+#   SERVICE_DAEMONIZE	run EXEC in background
+#   SERVICE_WRITE_PID	create a pid-file and use it for matching
+#   SERVICE_MATCH_EXEC	use EXEC command-line for matching (default)
+#   SERVICE_MATCH_NAME	use EXEC process name for matching
+#   SERVICE_USE_PID	assume EXEC create its own pid-file and use it for matching
+#   SERVICE_NAME	process name to use (default to EXEC file part)
+#   SERVICE_PID_FILE	pid file to use (default to /var/run/$SERVICE_NAME.pid)
+#   SERVICE_SIG		signal to send when using -K
+#   SERVICE_SIG_RELOAD	default signal used when reloading
+#   SERVICE_SIG_STOP	default signal used when stopping
+#   SERVICE_STOP_TIME	time to wait for a process to stop gracefully before killing it
+#   SERVICE_UID		user EXEC should be run as
+#   SERVICE_GID		group EXEC should be run as
+#
+#   SERVICE_DEBUG	don't do anything, but show what would be done
+#   SERVICE_QUIET	don't print anything
+#
+
+SERVICE_QUIET=1
+SERVICE_SIG_RELOAD="HUP"
+SERVICE_SIG_STOP="TERM"
+SERVICE_STOP_TIME=5
+SERVICE_MATCH_EXEC=1
+
+service() {
+	local ssd
+	local exec
+	local name
+	local start
+	ssd="${SERVICE_DEBUG:+echo }start-stop-daemon${SERVICE_QUIET:+ -q}"
+	case "$1" in
+	  -C)
+		ssd="$ssd -K -t"
+		;;
+	  -S)
+		ssd="$ssd -S${SERVICE_DAEMONIZE:+ -b}${SERVICE_WRITE_PID:+ -m}"
+		start=1
+		;;
+	  -K)
+		ssd="$ssd -K${SERVICE_SIG:+ -s $SERVICE_SIG}"
+		;;
+	  *)
+		echo "service: unknown ACTION '$1'" 1>&2
+		return 1
+	esac
+	shift
+	exec="$1"
+	[ -n "$exec" ] || {
+		echo "service: missing argument" 1>&2
+		return 1
+	}
+	[ -x "$exec" ] || {
+		echo "service: file '$exec' is not executable" 1>&2
+		return 1
+	}
+	name="${SERVICE_NAME:-${exec##*/}}"
+	[ -z "$SERVICE_USE_PID$SERVICE_WRITE_PID$SERVICE_PID_FILE" ] \
+		|| ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/$name.pid}"
+	[ -z "$SERVICE_MATCH_NAME" ] || ssd="$ssd -n $name"
+	ssd="$ssd${SERVICE_UID:+ -c $SERVICE_UID${SERVICE_GID:+:$SERVICE_GID}}"
+	[ -z "$SERVICE_MATCH_EXEC$start" ] || ssd="$ssd -x $exec"
+	shift
+	$ssd${1:+ -- "$@"}
+}
+
+service_check() {
+	service -C "$@"
+}
+
+service_signal() {
+	SERVICE_SIG="${SERVICE_SIG:-USR1}" service -K "$@"
+}
+
+service_start() {
+	service -S "$@"
+}
+
+service_stop() {
+	local try
+	SERVICE_SIG="${SERVICE_SIG:-$SERVICE_SIG_STOP}" service -K "$@" || return 1
+	while [ $((try++)) -lt $SERVICE_STOP_TIME ]; do
+		service -C "$@" || return 0
+		sleep 1
+	done
+	SERVICE_SIG="KILL" service -K "$@"
+	sleep 1
+	! service -C "$@"
+}
+
+service_reload() {
+	SERVICE_SIG="${SERVICE_SIG:-$SERVICE_SIG_RELOAD}" service -K "$@"
+}
diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
new file mode 100644
index 0000000..8d75a5a
--- /dev/null
+++ b/package/base-files/files/lib/functions/system.sh
@@ -0,0 +1,112 @@
+# Copyright (C) 2006-2013 OpenWrt.org
+
+find_mtd_chardev() {
+	local INDEX=$(find_mtd_index "$1")
+	local PREFIX=/dev/mtd
+
+	[ -d /dev/mtd ] && PREFIX=/dev/mtd/
+	echo "${INDEX:+$PREFIX$INDEX}"
+}
+
+mtd_get_mac_ascii()
+{
+	local mtdname="$1"
+	local key="$2"
+	local part
+	local mac_dirty
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_ascii: partition $mtdname not found!" >&2
+		return
+	fi
+
+	mac_dirty=$(strings "$part" | sed -n 's/^'"$key"'=//p')
+
+	# "canonicalize" mac
+	[ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty"
+}
+
+mtd_get_mac_binary() {
+	local mtdname="$1"
+	local offset="$2"
+	local part
+
+	part=$(find_mtd_part "$mtdname")
+	if [ -z "$part" ]; then
+		echo "mtd_get_mac_binary: partition $mtdname not found!" >&2
+		return
+	fi
+
+	dd bs=1 skip=$offset count=6 if=$part 2>/dev/null | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"'
+}
+
+mtd_get_part_size() {
+	local part_name=$1
+	local first dev size erasesize name
+	while read dev size erasesize name; do
+		name=${name#'"'}; name=${name%'"'}
+		if [ "$name" = "$part_name" ]; then
+			echo $((0x$size))
+			break
+		fi
+	done < /proc/mtd
+}
+
+macaddr_add() {
+	local mac=$1
+	local val=$2
+	local oui=${mac%:*:*:*}
+	local nic=${mac#*:*:*:}
+
+	nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
+	echo $oui:$nic
+}
+
+macaddr_setbit_la()
+{
+	local mac=$1
+
+	printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
+}
+
+macaddr_2bin()
+{
+	local mac=$1
+
+	echo -ne \\x${mac//:/\\x}
+}
+
+macaddr_canonicalize()
+{
+	local mac="$1"
+	local canon=""
+
+	mac=$(echo -n $mac | tr -d \")
+	[ ${#mac} -gt 17 ] && return
+	[ -n "${mac//[a-fA-F0-9\.: -]/}" ] && return
+
+	for octet in ${mac//[\.:-]/ }; do
+		case "${#octet}" in
+		1)
+			octet="0${octet}"
+			;;
+		2)
+			;;
+		4)
+			octet="${octet:0:2} ${octet:2:2}"
+			;;
+		12)
+			octet="${octet:0:2} ${octet:2:2} ${octet:4:2} ${octet:6:2} ${octet:8:2} ${octet:10:2}"
+			;;
+		*)
+			return
+			;;
+		esac
+		canon=${canon}${canon:+ }${octet}
+	done
+
+	[ ${#canon} -ne 17 ] && return
+
+	printf "%02x:%02x:%02x:%02x:%02x:%02x" 0x${canon// / 0x} 2>/dev/null
+}
diff --git a/package/base-files/files/lib/functions/uci-defaults-new.sh b/package/base-files/files/lib/functions/uci-defaults-new.sh
new file mode 100755
index 0000000..7222ff8
--- /dev/null
+++ b/package/base-files/files/lib/functions/uci-defaults-new.sh
@@ -0,0 +1,302 @@
+#!/bin/ash
+
+CFG=/etc/board.json
+
+. /usr/share/libubox/jshn.sh
+
+json_select_array() {
+	local _json_no_warning=1
+
+	json_select "$1"
+	[ $? = 0 ] && return
+
+	json_add_array $1
+	json_close_array
+
+	json_select "$1"
+}
+
+json_select_object() {
+	local _json_no_warning=1
+
+	json_select "$1"
+	[ $? = 0 ] && return
+
+	json_add_object $1
+	json_close_object
+
+	json_select "$1"
+}
+
+_ucidef_set_interface() {
+	local name=$1
+	local iface=$2
+
+	json_select_object $name
+	json_add_string ifname "${iface%%.*}"
+	[ "$iface" = "${iface%%.*}" ] || json_add_boolean create_vlan 1
+	json_select ..
+}
+
+ucidef_set_interface_loopback()
+{
+	# stub
+	local a=$1
+}
+
+ucidef_set_interface_lan() {
+	local lan_if=$1
+
+	json_select_object network
+	_ucidef_set_interface lan $lan_if
+	json_select ..
+}
+
+ucidef_set_interfaces_lan_wan() {
+	local lan_if=$1
+	local wan_if=$2
+
+	json_select_object network
+	_ucidef_set_interface lan $lan_if
+	_ucidef_set_interface wan $wan_if
+	json_select ..
+}
+
+ucidef_add_switch() {
+	local name=$1
+	local reset=$2
+	local enable=$3
+
+	json_select_object switch
+
+	json_select_object $name
+	json_add_boolean enable $enable
+	json_add_boolean reset $reset
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_add_switch_attr() {
+	local name=$1
+	local key=$2
+	local val=$3
+
+	json_select_object switch
+
+	json_select_object $name
+	json_add_string $key $val
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_add_switch_vlan() {
+	local name=$1
+	local vlan=$2
+	local ports=$3
+	local cpu_port=''
+
+	case $vlan in
+	1)	vlan=lan;;
+	2)	vlan=wan;;
+	*)	vlan=vlan$vlan;;
+	esac
+
+	json_select_object switch
+	json_select_object $name
+	json_select_object vlans
+
+	json_add_array $vlan
+	for p in $ports; do
+		if [ ${p%t} != $p ]; then
+			cpu_port=$p
+		else
+			json_add_int "" $p
+		fi
+	done
+	json_close_array
+
+	json_select ..
+	[ -n "$cpu_port" ] && json_add_int cpu_port $cpu_port
+	json_select ..
+	json_select ..
+}
+
+ucidef_set_interface_macaddr() {
+	local network=$1
+	local macaddr=$2
+
+	json_select_object network
+
+	json_select $network
+	[ $? -eq 0 ] || {
+		json_select ..
+		return
+	}
+
+	json_add_string macaddr $macaddr
+	json_select ..
+	
+	json_select ..
+}
+
+ucidef_set_led_netdev() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local dev=$4
+
+	json_select_object led
+	
+	json_select_object $1
+	json_add_string name $name
+	json_add_string type netdev
+	json_add_string sysfs $sysfs
+	json_add_string device $dev
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_led_interface() {
+	local name=$1
+	local sysfs=$2
+
+	json_select_object led
+	
+	json_select_object $1
+	json_add_string name $name
+	json_add_string type interface
+	json_add_string sysfs $sysfs
+	json_add_string interface $name
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_led_usbdev() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local dev=$4
+
+	json_select_object led
+	
+	json_select_object $1
+	json_add_string name $name	
+	json_add_string type usb
+	json_add_string sysfs $sysfs
+	json_add_string device $dev
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_led_wlan() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local trigger=$4
+
+	json_select_object led
+	
+	json_select_object $1
+	json_add_string name $name
+	json_add_string type trigger
+	json_add_string sysfs $sysfs
+	json_add_string trigger $trigger
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_led_switch() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local trigger=$4
+	local port_mask=$5
+
+	json_select_object led
+	
+	json_select_object $1
+	json_add_string name $name
+	json_add_string type switch
+	json_add_string sysfs $sysfs
+	json_add_string trigger $trigger
+	json_add_string port_mask $port_mask
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_led_default() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local default=$4
+
+	json_select_object led
+	
+	json_select_object $1
+	json_add_string name $name
+	json_add_string sysfs $sysfs
+	json_add_string default $default
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_led_rssi() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local iface=$4
+	local minq=$5
+	local maxq=$6
+	local offset=$7
+	local factor=$8
+
+	json_select_object led
+	
+	json_select_object rssi
+	json_select_object $1
+	json_add_string name $name
+	json_add_string sysfs $sysfs
+	json_add_string minq $minq
+	json_add_string maxq $maxq
+	json_add_string offset $offset
+	json_add_string factor $factor
+	json_select ..
+	json_select ..
+
+	json_select ..
+}
+
+ucidef_set_rssimon() {
+	local dev="$1"
+	local refresh="$2"
+	local threshold="$3"
+
+	json_select_object led
+	
+	json_select_object rssi
+	json_add_string type rssi
+	json_add_string dev $dev
+	json_add_string threshold $threshold
+	json_select ..
+
+	json_select ..
+	
+}
+
+board_config_update() {
+	json_init
+	[ -f ${CFG} ] && json_load "$(cat ${CFG})"
+}
+
+board_config_flush() {
+	json_dump -i > /tmp/.board.json
+	mv /tmp/.board.json ${CFG}
+}
diff --git a/package/base-files/files/lib/functions/uci-defaults.sh b/package/base-files/files/lib/functions/uci-defaults.sh
new file mode 100644
index 0000000..2658d43
--- /dev/null
+++ b/package/base-files/files/lib/functions/uci-defaults.sh
@@ -0,0 +1,345 @@
+#!/bin/sh
+# Copyright (C) 2011 OpenWrt.org
+
+UCIDEF_LEDS_CHANGED=0
+UCIDEF_GPIO_SWITCHES_CHANGED=0
+
+ucidef_set_led_netdev() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local dev=$4
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='netdev'
+set system.$cfg.dev='$dev'
+set system.$cfg.mode='link tx rx'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_usbdev() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local dev=$4
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='usbdev'
+set system.$cfg.dev='$dev'
+set system.$cfg.interval='50'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_wlan() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local trigger=$4
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='$trigger'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_switch() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local trigger=$4
+	local port_mask=$5
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='$trigger'
+set system.$cfg.port_mask='$port_mask'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_default() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local default=$4
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.default='$default'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_rssi() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local iface=$4
+	local minq=$5
+	local maxq=$6
+	local offset=$7
+	local factor=$8
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='rssi'
+set system.$cfg.iface='rssid_$iface'
+set system.$cfg.minq='$minq'
+set system.$cfg.maxq='$maxq'
+set system.$cfg.offset='$offset'
+set system.$cfg.factor='$factor'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_timer() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local delayon=$4
+	local delayoff=$5
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='timer'
+set system.$cfg.delayon='$delayon'
+set system.$cfg.delayoff='$delayoff'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_mmc() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local trigger=$4
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='$trigger'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_trigger_gpio() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+	local gpio=$4
+	local inverted=$5
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='gpio'
+set system.$cfg.gpio='$gpio'
+set system.$cfg.inverted='$inverted'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_led_ide_disk() {
+	local cfg="led_$1"
+	local name=$2
+	local sysfs=$3
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='led'
+set system.$cfg.name='$name'
+set system.$cfg.sysfs='$sysfs'
+set system.$cfg.trigger='ide-disk'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_set_rssimon() {
+	local dev="$1"
+	local refresh="$2"
+	local threshold="$3"
+
+	local cfg="rssid_$dev"
+
+	uci -q get system.$cfg && return 0
+
+	uci batch <<EOF
+set system.$cfg='rssid'
+set system.$cfg.dev='$dev'
+set system.$cfg.refresh='$refresh'
+set system.$cfg.threshold='$threshold'
+EOF
+	UCIDEF_LEDS_CHANGED=1
+}
+
+ucidef_commit_leds()
+{
+	[ "$UCIDEF_LEDS_CHANGED" = "1" ] && uci commit system
+}
+
+ucidef_set_gpio_switch() {
+	local cfg="gpio_switch_$1"
+	local name="$2"
+	local gpio_pin="$3"
+	# use "0" as default value
+	local default="${4:-0}"
+
+	uci -q get "system.$cfg" && return 0
+
+	uci batch <<EOF
+set system.$cfg='gpio_switch'
+set system.$cfg.name='$name'
+set system.$cfg.gpio_pin='$gpio_pin'
+set system.$cfg.value='$default'
+EOF
+	UCIDEF_GPIO_SWITCHES_CHANGED=1
+}
+
+ucidef_commit_gpio_switches()
+{
+	[ "$UCIDEF_GPIO_SWITCHES_CHANGED" = "1" ] && uci commit system
+}
+
+ucidef_set_interface_loopback() {
+	uci batch <<EOF
+set network.loopback='interface'
+set network.loopback.ifname='lo'
+set network.loopback.proto='static'
+set network.loopback.ipaddr='127.0.0.1'
+set network.loopback.netmask='255.0.0.0'
+set network.globals='globals'
+set network.globals.ula_prefix='auto'
+EOF
+}
+
+ucidef_set_interface_raw() {
+	local cfg=$1
+	local ifname=$2
+	local proto=${3:-"none"}
+
+	uci batch <<EOF
+set network.$cfg='interface'
+set network.$cfg.ifname='$ifname'
+set network.$cfg.proto='$proto'
+EOF
+}
+
+ucidef_set_interface_lan() {
+	local ifname=$1
+
+	uci batch <<EOF
+set network.lan='interface'
+set network.lan.ifname='$ifname'
+set network.lan.force_link=1
+set network.lan.type='bridge'
+set network.lan.proto='static'
+set network.lan.ipaddr='192.168.1.1'
+set network.lan.netmask='255.255.255.0'
+set network.lan.ip6assign='60'
+EOF
+}
+
+ucidef_set_interface_wan() {
+	local ifname=$1
+
+	uci batch <<EOF
+set network.wan='interface'
+set network.wan.ifname='$ifname'
+set network.wan.proto='dhcp'
+set network.wan6='interface'
+set network.wan6.ifname='$ifname'
+set network.wan6.proto='dhcpv6'
+EOF
+}
+
+ucidef_set_interfaces_lan_wan() {
+	local lan_ifname=$1
+	local wan_ifname=$2
+
+	ucidef_set_interface_lan "$lan_ifname"
+	ucidef_set_interface_wan "$wan_ifname"
+}
+
+ucidef_set_interface_macaddr() {
+	local ifname=$1
+	local mac=$2
+
+	uci batch <<EOF
+set network.$ifname.macaddr='$mac'
+EOF
+}
+
+ucidef_add_switch() {
+	local name=$1
+	local reset=$2
+	local enable=$3
+	uci batch <<EOF
+add network switch
+set network.@switch[-1].name='$name'
+set network.@switch[-1].reset='$reset'
+set network.@switch[-1].enable_vlan='$enable'
+EOF
+}
+
+ucidef_add_switch_vlan() {
+	local device=$1
+	local vlan=$2
+	local ports=$3
+	uci batch <<EOF
+add network switch_vlan
+set network.@switch_vlan[-1].device='$device'
+set network.@switch_vlan[-1].vlan='$vlan'
+set network.@switch_vlan[-1].ports='$ports'
+EOF
+}
+
+ucidef_add_switch_port() {
+	local device=$1
+	local port=$2
+	uci batch <<EOF
+add network switch_port
+set network.@switch_port[-1].device='$device'
+set network.@switch_port[-1].port='$port'
+EOF
+}
+
diff --git a/package/base-files/files/lib/preinit/02_default_set_state b/package/base-files/files/lib/preinit/02_default_set_state
new file mode 100644
index 0000000..df43395
--- /dev/null
+++ b/package/base-files/files/lib/preinit/02_default_set_state
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+define_default_set_state() {
+	. /etc/diag.sh
+}
+
+boot_hook_add preinit_main define_default_set_state
diff --git a/package/base-files/files/lib/preinit/10_indicate_failsafe b/package/base-files/files/lib/preinit/10_indicate_failsafe
new file mode 100644
index 0000000..6afae41
--- /dev/null
+++ b/package/base-files/files/lib/preinit/10_indicate_failsafe
@@ -0,0 +1,17 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+# commands for emitting messages to network in failsafe mode
+
+indicate_failsafe_led () {
+	set_state failsafe
+}
+
+indicate_failsafe() {
+	echo "- failsafe -"
+	preinit_net_echo "Entering Failsafe!\n"
+	indicate_failsafe_led
+}
+
+boot_hook_add failsafe indicate_failsafe
diff --git a/package/base-files/files/lib/preinit/10_indicate_preinit b/package/base-files/files/lib/preinit/10_indicate_preinit
new file mode 100644
index 0000000..1fab8a2
--- /dev/null
+++ b/package/base-files/files/lib/preinit/10_indicate_preinit
@@ -0,0 +1,47 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+preinit_ip() {
+	# if the preinit interface isn't specified and ifname is set in
+	# preinit.arch use that interface
+	if [ -z "$pi_ifname" ]; then
+		pi_ifname=$ifname
+	fi
+
+	[ -n "$pi_ifname" ] && grep -q "$pi_ifname" /proc/net/dev && {
+		ip link set dev $pi_ifname up
+		ip -4 address add $pi_ip/$pi_netmask broadcast $pi_broadcast dev $pi_ifname
+	}
+}
+
+preinit_ip_deconfig() {
+	[ -n "$pi_ifname" ] && grep -q "$pi_ifname" /proc/net/dev && {
+		ip -4 address flush dev $pi_ifname
+		ip link set dev $pi_ifname down
+	}
+}
+
+preinit_net_echo() {
+	[ -n "$pi_ifname" ] && grep -q "$pi_ifname" /proc/net/dev && {
+		{
+			[ "$pi_preinit_net_messages" = "y" ] || {
+				[ "$pi_failsafe_net_message" = "true" ] &&
+					[ "$pi_preinit_no_failsafe_netmsg" != "y" ]
+			}
+		} && netmsg $pi_broadcast "$1"
+	}
+}
+
+preinit_echo() {
+	preinit_net_echo $1
+	echo $1
+}
+
+pi_indicate_preinit() {
+	preinit_net_echo "Doing OpenWrt Preinit\n"
+	set_state preinit
+}
+
+boot_hook_add preinit_main preinit_ip
+boot_hook_add preinit_main pi_indicate_preinit
diff --git a/package/base-files/files/lib/preinit/10_sysinfo b/package/base-files/files/lib/preinit/10_sysinfo
new file mode 100644
index 0000000..42fd5b6
--- /dev/null
+++ b/package/base-files/files/lib/preinit/10_sysinfo
@@ -0,0 +1,10 @@
+do_sysinfo_generic() {
+	[ -d /proc/device-tree ] || return
+	mkdir -p /tmp/sysinfo
+	[ -e /tmp/sysinfo/board_name ] || \
+		echo "$(strings /proc/device-tree/compatible | head -1)" > /tmp/sysinfo/board_name
+	[ -e /tmp/sysinfo/model ] || \
+		echo "$(cat /proc/device-tree/model)" > /tmp/sysinfo/model
+}
+
+boot_hook_add preinit_main do_sysinfo_generic
diff --git a/package/base-files/files/lib/preinit/30_failsafe_wait b/package/base-files/files/lib/preinit/30_failsafe_wait
new file mode 100644
index 0000000..3d69baf
--- /dev/null
+++ b/package/base-files/files/lib/preinit/30_failsafe_wait
@@ -0,0 +1,96 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+fs_wait_for_key () {
+	local timeout=$3
+	local timer
+	local do_keypress
+	local keypress_true="$(mktemp)"
+	local keypress_wait="$(mktemp)"
+	local keypress_sec="$(mktemp)"
+	if [ -z "$keypress_wait" ]; then
+		keypress_wait=/tmp/.keypress_wait
+		touch $keypress_wait
+	fi
+	if [ -z "$keypress_true" ]; then
+		keypress_true=/tmp/.keypress_true
+		touch $keypress_true
+	fi
+	if [ -z "$keypress_sec" ]; then
+		keypress_sec=/tmp/.keypress_sec
+		touch $keypress_sec
+	fi
+
+	trap "echo 'true' >$keypress_true; lock -u $keypress_wait ; rm -f $keypress_wait" INT
+	trap "echo 'true' >$keypress_true; lock -u $keypress_wait ; rm -f $keypress_wait" USR1
+
+	[ -n "$timeout" ] || timeout=1
+	[ $timeout -ge 1 ] || timeout=1
+	timer=$timeout
+	lock $keypress_wait
+	{
+		while [ $timer -gt 0 ]; do
+			echo "$timer" >$keypress_sec
+			timer=$(($timer - 1))
+			sleep 1
+		done
+		lock -u $keypress_wait
+		rm -f $keypress_wait
+	} &
+
+	echo "Press the [$1] key and hit [enter] $2"
+	echo "Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level"
+	# if we're on the console we wait for input
+	{
+		while [ -r $keypress_wait ]; do
+			timer="$(cat $keypress_sec)"
+
+			[ -n "$timer" ] || timer=1
+			timer="${timer%%\ *}"
+			[ $timer -ge 1 ] || timer=1
+			do_keypress=""
+			{
+				read -t "$timer" do_keypress
+				case "$do_keypress" in
+				$1)
+					echo "true" >$keypress_true
+					;;
+				1 | 2 | 3 | 4)
+					echo "$do_keypress" >/tmp/debug_level
+					;;
+				*)
+					continue;
+					;;
+				esac
+				lock -u $keypress_wait
+				rm -f $keypress_wait
+			}
+		done
+	}
+	lock -w $keypress_wait
+
+	keypressed=1
+	[ "$(cat $keypress_true)" = "true" ] && keypressed=0
+
+	rm -f $keypress_true
+	rm -f $keypress_wait
+	rm -f $keypress_sec
+
+	return $keypressed
+}
+
+failsafe_wait() {
+	FAILSAFE=
+	grep -q 'failsafe=' /proc/cmdline && FAILSAFE=true && export FAILSAFE
+	if [ "$FAILSAFE" != "true" ]; then
+		pi_failsafe_net_message=true
+		preinit_net_echo "Please press button now to enter failsafe"
+		pi_failsafe_net_message=false
+		fs_wait_for_key f 'to enter failsafe mode' $fs_failsafe_wait_timeout && FAILSAFE=true
+		[ -f "/tmp/failsafe_button" ] && FAILSAFE=true && echo "- failsafe button "`cat /tmp/failsafe_button`" was pressed -"
+		[ "$FAILSAFE" = "true" ] && export FAILSAFE && touch /tmp/failsafe
+	fi
+}
+
+boot_hook_add preinit_main failsafe_wait
diff --git a/package/base-files/files/lib/preinit/40_run_failsafe_hook b/package/base-files/files/lib/preinit/40_run_failsafe_hook
new file mode 100644
index 0000000..cb43ad3
--- /dev/null
+++ b/package/base-files/files/lib/preinit/40_run_failsafe_hook
@@ -0,0 +1,12 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+run_failsafe_hook() {
+    if [ "$FAILSAFE" = "true" ]; then
+	boot_run_hook failsafe
+	lock -w /tmp/.failsafe
+    fi
+}
+
+boot_hook_add preinit_main run_failsafe_hook
diff --git a/package/base-files/files/lib/preinit/50_indicate_regular_preinit b/package/base-files/files/lib/preinit/50_indicate_regular_preinit
new file mode 100644
index 0000000..5b7523f
--- /dev/null
+++ b/package/base-files/files/lib/preinit/50_indicate_regular_preinit
@@ -0,0 +1,10 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+indicate_regular_preinit() {
+	preinit_net_echo "Continuing with Regular Preinit\n"
+	set_state preinit_regular
+}
+
+boot_hook_add preinit_main indicate_regular_preinit
diff --git a/package/base-files/files/lib/preinit/70_initramfs_test b/package/base-files/files/lib/preinit/70_initramfs_test
new file mode 100644
index 0000000..8504e34
--- /dev/null
+++ b/package/base-files/files/lib/preinit/70_initramfs_test
@@ -0,0 +1,13 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+initramfs_test() {
+	if [ -n "$INITRAMFS" ]; then
+		boot_run_hook initramfs
+		preinit_ip_deconfig
+		break
+	fi
+}
+
+boot_hook_add preinit_main initramfs_test
diff --git a/package/base-files/files/lib/preinit/80_mount_root b/package/base-files/files/lib/preinit/80_mount_root
new file mode 100644
index 0000000..f3fe788
--- /dev/null
+++ b/package/base-files/files/lib/preinit/80_mount_root
@@ -0,0 +1,15 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+do_mount_root() {
+	mount_root
+	boot_run_hook preinit_mount_root
+	[ -f /sysupgrade.tgz ] && {
+		echo "- config restore -"
+		cd /
+		tar xzf /sysupgrade.tgz
+	}
+}
+
+[ "$INITRAMFS" = "1" ] || boot_hook_add preinit_main do_mount_root
diff --git a/package/base-files/files/lib/preinit/99_10_failsafe_login b/package/base-files/files/lib/preinit/99_10_failsafe_login
new file mode 100644
index 0000000..b12e317
--- /dev/null
+++ b/package/base-files/files/lib/preinit/99_10_failsafe_login
@@ -0,0 +1,17 @@
+#!/bin/sh
+# Copyright (C) 2006-2015 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+failsafe_netlogin () {
+	dropbearkey -t rsa -s 1024 -f /tmp/dropbear_failsafe_host_key
+	dropbear -r /tmp/dropbear_failsafe_host_key <> /dev/null 2>&1
+}
+
+failsafe_shell() {
+	lock /tmp/.failsafe
+	ash --login
+	echo "Please reboot system when done with failsafe network logins"
+}
+
+boot_hook_add failsafe failsafe_netlogin
+boot_hook_add failsafe failsafe_shell
diff --git a/package/base-files/files/lib/preinit/99_10_run_init b/package/base-files/files/lib/preinit/99_10_run_init
new file mode 100644
index 0000000..b4f0ec2
--- /dev/null
+++ b/package/base-files/files/lib/preinit/99_10_run_init
@@ -0,0 +1,9 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+run_init() {
+	preinit_ip_deconfig
+}
+
+boot_hook_add preinit_main run_init
diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
new file mode 100644
index 0000000..761b4c1
--- /dev/null
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -0,0 +1,248 @@
+#!/bin/sh
+
+RAM_ROOT=/tmp/root
+
+[ -x /usr/bin/ldd ] || ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; }
+libs() { ldd $* 2>/dev/null | sed -r 's/(.* => )?(.*) .*/\2/'; }
+
+install_file() { # <file> [ <file> ... ]
+	for file in "$@"; do
+		dest="$RAM_ROOT/$file"
+		[ -f $file -a ! -f $dest ] && {
+			dir="$(dirname $dest)"
+			mkdir -p "$dir"
+			cp $file $dest
+		}
+	done
+}
+
+install_bin() { # <file> [ <symlink> ... ]
+	src=$1
+	files=$1
+	[ -x "$src" ] && files="$src $(libs $src)"
+	install_file $files
+	shift
+	for link in "$@"; do {
+		dest="$RAM_ROOT/$link"
+		dir="$(dirname $dest)"
+		mkdir -p "$dir"
+		[ -f "$dest" ] || ln -s $src $dest
+	}; done
+}
+
+supivot() { # <new_root> <old_root>
+	/bin/mount | grep "on $1 type" 2>&- 1>&- || /bin/mount -o bind $1 $1
+	mkdir -p $1$2 $1/proc $1/sys $1/dev $1/tmp $1/overlay && \
+	/bin/mount -o noatime,move /proc $1/proc && \
+	pivot_root $1 $1$2 || {
+		/bin/umount -l $1 $1
+		return 1
+	}
+
+	/bin/mount -o noatime,move $2/sys /sys
+	/bin/mount -o noatime,move $2/dev /dev
+	/bin/mount -o noatime,move $2/tmp /tmp
+	/bin/mount -o noatime,move $2/overlay /overlay 2>&-
+	return 0
+}
+
+run_ramfs() { # <command> [...]
+	install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount	\
+		/sbin/pivot_root /usr/bin/wget /sbin/reboot /bin/sync /bin/dd	\
+		/bin/grep /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/["	\
+		/bin/dd /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump	\
+		/bin/sleep /bin/zcat /usr/bin/bzcat /usr/bin/printf /usr/bin/wc \
+		/bin/cut /usr/bin/printf /bin/sync /bin/mkdir /bin/rmdir	\
+		/bin/rm /usr/bin/basename /bin/kill /bin/chmod
+
+	install_bin /sbin/mtd
+	install_bin /sbin/mount_root
+	install_bin /sbin/snapshot
+	install_bin /sbin/snapshot_tool
+	install_bin /usr/sbin/ubiupdatevol
+	install_bin /usr/sbin/ubiattach
+	install_bin /usr/sbin/ubiblock
+	install_bin /usr/sbin/ubiformat
+	install_bin /usr/sbin/ubidetach
+	install_bin /usr/sbin/ubirsvol
+	install_bin /usr/sbin/ubirmvol
+	install_bin /usr/sbin/ubimkvol
+	for file in $RAMFS_COPY_BIN; do
+		install_bin ${file//:/ }
+	done
+	install_file /etc/resolv.conf /lib/*.sh /lib/functions/*.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA
+
+	[ -L "/lib64" ] && ln -s /lib $RAM_ROOT/lib64
+
+	supivot $RAM_ROOT /mnt || {
+		echo "Failed to switch over to ramfs. Please reboot."
+		exit 1
+	}
+
+	/bin/mount -o remount,ro /mnt
+	/bin/umount -l /mnt
+
+	grep /overlay /proc/mounts > /dev/null && {
+		/bin/mount -o noatime,remount,ro /overlay
+		/bin/umount -l /overlay
+	}
+
+	# spawn a new shell from ramdisk to reduce the probability of cache issues
+	exec /bin/busybox ash -c "$*"
+}
+
+kill_remaining() { # [ <signal> ]
+	local sig="${1:-TERM}"
+	echo -n "Sending $sig to remaining processes ... "
+
+	local my_pid=$$
+	local my_ppid=$(cut -d' ' -f4  /proc/$my_pid/stat)
+	local my_ppisupgraded=
+	grep -q upgraded /proc/$my_ppid/cmdline >/dev/null && {
+		local my_ppisupgraded=1
+	}
+	
+	local stat
+	for stat in /proc/[0-9]*/stat; do
+		[ -f "$stat" ] || continue
+
+		local pid name state ppid rest
+		read pid name state ppid rest < $stat
+		name="${name#(}"; name="${name%)}"
+
+		local cmdline
+		read cmdline < /proc/$pid/cmdline
+
+		# Skip kernel threads
+		[ -n "$cmdline" ] || continue
+
+		if [ $$ -eq 1 ] || [ $my_ppid -eq 1 ] && [ -n "$my_ppisupgraded" ]; then
+			# Running as init process, kill everything except me
+			if [ $pid -ne $$ ] && [ $pid -ne $my_ppid ]; then
+				echo -n "$name "
+				kill -$sig $pid 2>/dev/null
+			fi
+		else 
+			case "$name" in
+				# Skip essential services
+				*procd*|*ash*|*init*|*watchdog*|*ssh*|*dropbear*|*telnet*|*login*|*hostapd*|*wpa_supplicant*|*nas*) : ;;
+
+				# Killable process
+				*)
+					if [ $pid -ne $$ ] && [ $ppid -ne $$ ]; then
+						echo -n "$name "
+						kill -$sig $pid 2>/dev/null
+					fi
+				;;
+			esac
+		fi
+	done
+	echo ""
+}
+
+run_hooks() {
+	local arg="$1"; shift
+	for func in "$@"; do
+		eval "$func $arg"
+	done
+}
+
+ask_bool() {
+	local default="$1"; shift;
+	local answer="$default"
+
+	[ "$INTERACTIVE" -eq 1 ] && {
+		case "$default" in
+			0) echo -n "$* (y/N): ";;
+			*) echo -n "$* (Y/n): ";;
+		esac
+		read answer
+		case "$answer" in
+			y*) answer=1;;
+			n*) answer=0;;
+			*) answer="$default";;
+		esac
+	}
+	[ "$answer" -gt 0 ]
+}
+
+v() {
+	[ "$VERBOSE" -ge 1 ] && echo "$@"
+}
+
+rootfs_type() {
+	/bin/mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
+}
+
+get_image() { # <source> [ <command> ]
+	local from="$1"
+	local conc="$2"
+	local cmd
+
+	case "$from" in
+		http://*|ftp://*) cmd="wget -O- -q";;
+		*) cmd="cat";;
+	esac
+	if [ -z "$conc" ]; then
+		local magic="$(eval $cmd \"$from\" 2>/dev/null | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
+		case "$magic" in
+			1f8b) conc="zcat";;
+			425a) conc="bzcat";;
+		esac
+	fi
+
+	eval "$cmd \"$from\" 2>/dev/null ${conc:+| $conc}"
+}
+
+get_magic_word() {
+	(get_image "$@" | dd bs=2 count=1 | hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev/null
+}
+
+get_magic_long() {
+	(get_image "$@" | dd bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
+}
+
+jffs2_copy_config() {
+	if grep rootfs_data /proc/mtd >/dev/null; then
+		# squashfs+jffs2
+		mtd -e rootfs_data jffs2write "$CONF_TAR" rootfs_data
+	else
+		# jffs2
+		mtd jffs2write "$CONF_TAR" rootfs
+	fi
+}
+
+# Flash firmware to MTD partition
+#
+# $(1): path to image
+# $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
+default_do_upgrade() {
+	sync
+	if [ "$SAVE_CONFIG" -eq 1 ]; then
+		get_image "$1" "$2" | mtd $MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
+	else
+		get_image "$1" "$2" | mtd write - "${PART_NAME:-image}"
+	fi
+}
+
+do_upgrade() {
+	v "Performing system upgrade..."
+	if type 'platform_do_upgrade' >/dev/null 2>/dev/null; then
+		platform_do_upgrade "$ARGV"
+	else
+		default_do_upgrade "$ARGV"
+	fi
+
+	if [ "$SAVE_CONFIG" -eq 1 ] && type 'platform_copy_config' >/dev/null 2>/dev/null; then
+		platform_copy_config
+	fi
+
+	v "Upgrade completed"
+	[ -n "$DELAY" ] && sleep "$DELAY"
+	ask_bool 1 "Reboot" && {
+		v "Rebooting system..."
+		reboot -f
+		sleep 5
+		echo b 2>/dev/null >/proc/sysrq-trigger
+	}
+}
diff --git a/package/base-files/files/lib/upgrade/keep.d/base-files-essential b/package/base-files/files/lib/upgrade/keep.d/base-files-essential
new file mode 100644
index 0000000..978d4b5
--- /dev/null
+++ b/package/base-files/files/lib/upgrade/keep.d/base-files-essential
@@ -0,0 +1,10 @@
+# Essential files that will be always kept
+/etc/hosts
+/etc/inittab
+/etc/group
+/etc/passwd
+/etc/profile
+/etc/shadow
+/etc/shells
+/etc/sysctl.conf
+/etc/rc.local
-- 
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