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

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