openwrt/package/base-files/default/etc/functions.sh

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
   4
   5 alias debug=${DEBUG:-:}
   6
   7 # newline
   8 N="
   9 "
  10
  11 _C=0
  12
  13 # valid interface?
  14 if_valid () (
  15   ifconfig "$1" >&- 2>&- ||
  16   [ "${1%%[0-9]}" = "br" ] ||
  17   { debug "# missing interface '$1' ignored"; false; }
  18 )
  19
  20 hotplug_dev() {
  21         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
  22 }
  23
  24 append() {
  25         local var="$1"
  26         local value="$2"
  27         local sep="${3:- }"
  28         eval "export ${var}=\"\${${var}:+\${${var}}${value:+$sep}}$value\""
  29 }
  30
  31 reset_cb() {
  32         config_cb() {
  33                 return 0
  34         }
  35         option_cb() {
  36                 return 0
  37         }
  38 }
  39 reset_cb
  40
  41 config () {
  42     local cfgtype="$1"
  43     local name="$2"
  44     _C=$(($_C + 1))
  45     name="${name:-cfg${_C}}"
  46     config_cb "$cfgtype" "$name"
  47     export CONFIG_SECTION="$name"
  48     export CONFIG_${CONFIG_SECTION}_TYPE="$cfgtype"
  49 }
  50
  51 option () {
  52         local varname="$1"; shift
  53         export CONFIG_${CONFIG_SECTION}_${varname}="$*"
  54         option_cb "$varname" "$*"
  55 }
  56
  57 config_clear() {
  58         [ -z "$CONFIG_SECTION" ] && return
  59         for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
  60                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  61                 unset $oldsetting
  62         done
  63         unset CONFIG_SECTION
  64 }
  65
  66 config_load() {
  67         local DIR="./"
  68         _C=0
  69         [ \! -e "$1" -a -e "/etc/config/$1" ] && {
  70                 DIR="/etc/config/"
  71         }
  72         [ -e "$DIR$1" ] && {
  73                 CONFIG_FILENAME="$DIR$1"
  74                 . ${CONFIG_FILENAME}
  75         } || return 1
  76         ${CD:+cd -} >/dev/null
  77         ${CONFIG_SECTION:+config_cb}
  78 }
  79
  80 config_get() {
  81         case "$3" in
  82                 "") eval "echo \${CONFIG_${1}_${2}}";;
  83                 *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
  84         esac
  85 }
  86
  87 config_set() {
  88         export CONFIG_${1}_${2}="${3}"
  89 }
  90
  91 load_modules() {
  92         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
  93 }
  94
  95 include() {
  96         for file in $(ls $1/*.sh 2>/dev/null); do
  97                 . $file
  98         done
  99 }