make network scripts more robust, prevent multiple instances of pppd and udhcpc for...

[openwrt.git] / package / base-files / default / etc / functions.sh

diff --git a/package/base-files/default/etc/functions.sh b/package/base-files/default/etc/functions.sh
index 858dc28..2abb6f8 100755 (executable)
--- a/package/base-files/default/etc/functions.sh
+++ b/package/base-files/default/etc/functions.sh
@@ -1,37 +1,72 @@
 #!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
+
 alias debug=${DEBUG:-:}
 
-# valid interface?
-if_valid () (
-  ifconfig "$1" >&- 2>&- ||
-  [ "${1%%[0-9]}" = "br" ] ||
-  { debug "# missing interface '$1' ignored"; false; }
-)
+# newline
+N="
+"
+
+_C=0
 
 hotplug_dev() {
        env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
 }
 
-config_cb() {
-       return 0
+append() {
+       local var="$1"
+       local value="$2"
+       local sep="${3:- }"
+       eval "export ${var}=\"\${${var}:+\${${var}}${value:+$sep}}\$value\""
 }
-option_cb() {
-       return 0
+
+reset_cb() {
+       config_cb() {
+               return 0
+       }
+       option_cb() {
+               return 0
+       }
 }
+reset_cb
 
 config () {
-       config_cb "$@"
-       _C=$((${_C:-0} + 1))
-       export CONFIG_SECTION="${2:-cfg${_C}}"
-       export CONFIG_${CONFIG_SECTION}_TYPE="$1"
+    local cfgtype="$1"
+    local name="$2"
+    _C=$(($_C + 1))
+    name="${name:-cfg${_C}}"
+    config_cb "$cfgtype" "$name"
+    export CONFIG_SECTION="$name"
+    export CONFIG_${CONFIG_SECTION}_TYPE="$cfgtype"
 }
 
 option () {
-       local varname="$1" ; shift
+       local varname="$1"; shift
        export CONFIG_${CONFIG_SECTION}_${varname}="$*"
        option_cb "$varname" "$*"
 }
 
+config_rename() {
+       local OLD="$1"
+       local NEW="$2"
+       local oldsetting
+       local newvar
+       
+       [ -z "$OLD" -o -z "$NEW" ] && return
+       for oldsetting in `set | grep ^CONFIG_${OLD}_ | \
+               sed -e 's/\(.*\)=.*$/\1/'` ; do
+               newvar="CONFIG_${NEW}_${oldsetting##CONFIG_${OLD}_}"
+               eval "${newvar}=\${$oldsetting}"
+               unset "$oldsetting"
+       done
+       [ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
+}
+
+config_unset() {
+       config_set "$1" "$2" ""
+}
+
 config_clear() {
        [ -z "$CONFIG_SECTION" ] && return
        for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
@@ -42,18 +77,22 @@ config_clear() {
 }
 
 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}
+       local DIR="./"
+       _C=0
+       [ \! -e "$1" -a -e "/etc/config/$1" ] && {
+               DIR="/etc/config/"
+       }
+       [ -e "$DIR$1" ] && {
+               CONFIG_FILENAME="$DIR$1"
+               . ${CONFIG_FILENAME}
+       } || return 1
+       ${CD:+cd -} >/dev/null
        ${CONFIG_SECTION:+config_cb}
 }
 
 config_get() {
        case "$3" in
-               "") eval "echo \${CONFIG_${1}_${2}}";;
+               "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
                *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
        esac
 }
@@ -61,3 +100,13 @@ config_get() {
 config_set() {
        export CONFIG_${1}_${2}="${3}"
 }
+
+load_modules() {
+       sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
+}
+
+include() {
+       for file in $(ls $1/*.sh 2>/dev/null); do
+               . $file
+       done
+}