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_rename() {
  58         local OLD="$1"
  59         local NEW="$2"
  60         local oldsetting
  61         local newvar
  62
  63         [ -z "$OLD" -o -z "$NEW" ] && return
  64         for oldsetting in `set | grep ^CONFIG_${OLD}_ | \
  65                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  66                 newvar="CONFIG_${NEW}_${oldsetting##CONFIG_${OLD}_}"
  67                 eval "${newvar}=\${$oldsetting}"
  68                 unset "$oldsetting"
  69         done
  70         [ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
  71 }
  72
  73 config_unset() {
  74         config_set "$1" "$2" ""
  75 }
  76
  77 config_clear() {
  78         [ -z "$CONFIG_SECTION" ] && return
  79         for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
  80                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  81                 unset $oldsetting
  82         done
  83         unset CONFIG_SECTION
  84 }
  85
  86 config_load() {
  87         local DIR="./"
  88         _C=0
  89         [ \! -e "$1" -a -e "/etc/config/$1" ] && {
  90                 DIR="/etc/config/"
  91         }
  92         [ -e "$DIR$1" ] && {
  93                 CONFIG_FILENAME="$DIR$1"
  94                 . ${CONFIG_FILENAME}
  95         } || return 1
  96         ${CD:+cd -} >/dev/null
  97         ${CONFIG_SECTION:+config_cb}
  98 }
  99
 100 config_get() {
 101         case "$3" in
 102                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 103                 *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
 104         esac
 105 }
 106
 107 config_set() {
 108         export CONFIG_${1}_${2}="${3}"
 109 }
 110
 111 load_modules() {
 112         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 113 }
 114
 115 include() {
 116         for file in $(ls $1/*.sh 2>/dev/null); do
 117                 . $file
 118         done
 119 }