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

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