source: freewrt/package/base-files/default/etc/functions.sh@ 475ad56

#!/bin/sh
alias debug=${DEBUG:-:}

# valid interface?
if_valid () (
  ifconfig "$1" >&- 2>&- ||
  [ "${1%%[0-9]}" = "br" ] ||
  { debug "# missing interface '$1' ignored"; false; }
)

hotplug_dev() {
        env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
}

config_cb() {
        return 0
}
option_cb() {
        return 0
}

config () {
        config_cb "$@"
        _C=$((${_C:-0} + 1))
        export CONFIG_SECTION="${2:-cfg${_C}}"
        export CONFIG_${CONFIG_SECTION}_TYPE="$1"
}

option () {
        local varname="$1" ; shift
        export CONFIG_${CONFIG_SECTION}_${varname}="$*"
        option_cb "$varname" "$*"
}

config_clear() {
        [ -z "$CONFIG_SECTION" ] && return
        for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
                sed -e 's/\(.*\)=.*$/\1/'` ; do 
                unset $oldsetting 
        done
        unset CONFIG_SECTION
}

config_load() {
        local CD=""
        if [ \! -e "$1" -a -e "/etc/config/$1" ]; then
                cd /etc/config && local CD=1
        fi
        [ -e "$1" ] && . $1
        ${CD:+cd - >/dev/null}
        ${CONFIG_SECTION:+config_cb}
}

config_get() {
        case "$3" in
                "") eval "echo \${CONFIG_${1}_${2}}";;
                *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
        esac
}

config_set() {
        export CONFIG_${1}_${2}="${3}"
}

load_modules() {
        sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
}