move platform specific base-files into target/linux/<targetname>
[openwrt.git] / package / base-files / default / etc / functions.sh
index 9cfc802..bf412df 100755 (executable)
-#!/bin/ash
-. /etc/nvram.sh
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
 
 alias debug=${DEBUG:-:}
 
-# valid interface?
-if_valid () (
-  ifconfig "$1" >&- 2>&- ||
-  [ "${1%%[0-9]}" = "br" ] ||
-  {
-    [ "${1%%[0-9]}" = "vlan" ] && ( 
-      i=${1#vlan}
-      hwname=$(nvram get vlan${i}hwname)
-      hwaddr=$(nvram get ${hwname}macaddr)
-      [ -z "$hwaddr" ] && return 1
-
-      vif=$(ifconfig -a | awk '/^eth.*'$hwaddr'/ {print $1; exit}' IGNORECASE=1)
-      debug "# vlan$i => $vif"
-
-      $DEBUG ifconfig $vif up
-      $DEBUG vconfig add $vif $i 2>&-
-    )
-  } ||
-  { debug "# missing interface '$1' ignored"; false; }
-)
-
-do_ifup() {
-       if_proto=$(nvram get ${2}_proto)
-       if=$(nvram get ${2}_ifname)
-       [ "${if%%[0-9]}" = "ppp" ] && if=$(nvram get ${if_proto}_ifname)
+# newline
+readonly N="
+"
+
+_C=0
+
+hotplug_dev() {
+       env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
+}
+
+append() {
+       local var="$1"
+       local value="$2"
+       local sep="${3:- }"
+       
+       eval "export -n -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+}
+
+reset_cb() {
+       config_cb() { return 0; }
+       option_cb() { return 0; }
+}
+reset_cb
+
+config () {
+       local cfgtype="$1"
+       local name="$2"
+    
+       _C=$((_C + 1))
+       name="${name:-cfg${_C}}"
+       config_cb "$cfgtype" "$name"
+       CONFIG_SECTION="$name"
+       export -n "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
+}
+
+option () {
+       local varname="$1"; shift
+       local value="$*"
+       
+       export -n "CONFIG_${CONFIG_SECTION}_${varname}=$value"
+       option_cb "$varname" "$*"
+}
+
+config_rename() {
+       local OLD="$1"
+       local NEW="$2"
+       local oldvar
+       local newvar
+       
+       [ "$OLD" -a "$NEW" ] || return
+       for oldvar in `set | grep ^CONFIG_${OLD}_ | \
+               sed -e 's/\(.*\)=.*$/\1/'` ; do
+               newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
+               eval "export -n \"$newvar=\${$oldvar}\""
+               unset "$oldvar"
+       done
+       
+       [ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
+}
+
+config_unset() {
+       config_set "$1" "$2" ""
+}
+
+config_clear() {
+       local SECTION="$1"
+       local oldvar
+       
+       for oldvar in `set | grep ^CONFIG_${SECTION}_ | \
+               sed -e 's/\(.*\)=.*$/\1/'` ; do 
+               unset $oldvar 
+       done
+}
+
+config_load() {
+       local file="/etc/config/$1"
+       _C=0
+       CONFIG_SECTION=
+       
+       [ -e "$file" ] && {
+               . $file
+       } || return 1
        
-       pidfile=/var/run/${if}.pid
-       [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
-
-       case "$1" in
-       static)
-               ip=$(nvram get ${2}_ipaddr)
-               netmask=$(nvram get ${2}_netmask)
-               gateway=$(nvram get ${2}_gateway)
-
-               $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
-               ${gateway:+$DEBUG route add default gw $gateway}
-
-               [ -f /etc/resolv.conf ] || {
-                       debug "# --- creating /etc/resolv.conf ---"
-                       for dns in $(nvram get ${2}_dns); do
-                               echo "nameserver $dns" >> /etc/resolv.conf
-                       done
-               }
-               
-               env -i ACTION="ifup" INTERFACE="${2}" PROTO=static /sbin/hotplug "iface" &
-       ;;
-       dhcp)
-               DHCP_IP=$(nvram get ${2}_ipaddr)
-               DHCP_NETMASK=$(nvram get ${2}_netmask)
-               $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
-
-               DHCP_ARGS="-i $if ${DHCP_IP:+-r $DHCP_IP} -b -p $pidfile"
-               DHCP_HOSTNAME=$(nvram get ${2}_hostname)
-               DHCP_HOSTNAME=${DHCP_HOSTNAME%%.*}
-               [ -z $DHCP_HOSTNAME ] || DHCP_ARGS="$DHCP_ARGS -H $DHCP_HOSTNAME"
-               [ "$if_proto" = "pptp" ] && DHCP_ARGS="$DHCP_ARGS -n -q" || DHCP_ARGS="$DHCP_ARGS -R &"
-               oldpid=$(cat $pidfile)
-               ${DEBUG:-eval} "udhcpc $DHCP_ARGS"
-               pidof udhcpc | grep "$oldpid" >&- 2>&- && {
-                       sleep 1
-                       kill -9 $oldpid
-               }
-               # hotplug events are handled by /usr/share/udhcpc/default.script
-       ;;
-       none|"")
-       ;;
-       *)
-               [ -x "/sbin/ifup.$1" ] && { $DEBUG /sbin/ifup.$1 ${2}; exit; }
-               echo "### ifup ${2}: ignored ${2}_proto=\"$1\" (not supported)"
-       ;;
+       ${CONFIG_SECTION:+config_cb}
+}
+
+config_get() {
+       case "$3" in
+               "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
+               *)  eval "export -n -- \"$1=\${CONFIG_${2}_${3}}\"";;
        esac
 }
 
-bitcount () {
-  local c=$1
-  echo $((
-  c=((c>> 1)&0x55555555)+(c&0x55555555),
-  c=((c>> 2)&0x33333333)+(c&0x33333333),
-  c=((c>> 4)&0x0f0f0f0f)+(c&0x0f0f0f0f),
-  c=((c>> 8)&0x00ff00ff)+(c&0x00ff00ff),
-  c=((c>>16)&0x0000ffff)+(c&0x0000ffff)
-  ))
+config_set() {
+       local section="$1"
+       local option="$2"
+       local value="$3"
+       export -n "CONFIG_${section}_${option}=$value"
 }
 
-valid_netmask () {
-  return $((-($1)&~$1))
+load_modules() {
+       sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
+}
+
+include() {
+       local file
+       
+       for file in $(ls $1/*.sh 2>/dev/null); do
+               . $file
+       done
 }
 
-ip2int () (
-  set $(echo $1 | tr '\.' ' ')
-  echo $(($1<<24|$2<<16|$3<<8|$4))
-)
+find_mtd_part() {
+       local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
+       
+       PART="${PART##mtd}"
+       echo "${PART:+/dev/mtdblock/$PART}"
+}
+
+strtok() { # <string> { <variable> [<separator>] ... }
+       local tmp
+       local val="$1"
+       local count=0
+
+       shift
+
+       while [ $# -gt 1 ]; do
+               tmp="${val%%$2*}"
+
+               [ "$tmp" = "$val" ] && break
+
+               val="${val#$tmp$2}"
+
+               export -n "$1=$tmp"; count=$((count+1))
+               shift 2
+       done
+
+       if [ $# -gt 0 -a "$val" ]; then
+               export -n "$1=$val"; count=$((count+1))
+       fi
 
-int2ip () {
-  echo $(($1>>24&255)).$(($1>>16&255)).$(($1>>8&255)).$(($1&255))
+       return $count
 }
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