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         local type="$1"
  40         local name="$2"
  41         _C=$(($_C + 1))
  42         name="${name:-cfg${_C}}"
  43         config_cb "$type" "$name"
  44         export CONFIG_SECTION="$name"
  45         export CONFIG_${CONFIG_SECTION}_TYPE="$type"
  46 }
  47
  48 option () {
  49         local varname="$1" ; shift
  50         export CONFIG_${CONFIG_SECTION}_${varname}="$*"
  51         option_cb "$varname" "$*"
  52 }
  53
  54 config_clear() {
  55         [ -z "$CONFIG_SECTION" ] && return
  56         for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
  57                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  58                 unset $oldsetting
  59         done
  60         unset CONFIG_SECTION
  61 }
  62
  63 config_load() {
  64         local DIR="./"
  65         _C=0
  66         [ \! -e "$1" -a -e "/etc/config/$1" ] && {
  67                 DIR="/etc/config/"
  68         }
  69         [ -e "$DIR$1" ] && {
  70                 CONFIG_FILENAME="$DIR$1"
  71                 . ${CONFIG_FILENAME}
  72         } || return 1
  73         ${CD:+cd -} >/dev/null
  74         ${CONFIG_SECTION:+config_cb}
  75 }
  76
  77 config_get() {
  78         case "$3" in
  79                 "") eval "echo \${CONFIG_${1}_${2}}";;
  80                 *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
  81         esac
  82 }
  83
  84 config_set() {
  85         export CONFIG_${1}_${2}="${3}"
  86 }
  87
  88 load_modules() {
  89         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
  90 }