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 ce22ed1..2abb6f8 100755 (executable)
--- a/package/base-files/default/etc/functions.sh
+++ b/package/base-files/default/etc/functions.sh
@@ -10,13 +10,6 @@ N="
 
 _C=0
 
-# 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
 }
@@ -25,7 +18,7 @@ append() {
        local var="$1"
        local value="$2"
        local sep="${3:- }"
-       eval "export ${var}=\"\${${var}:+\${${var}}${value:+$sep}}$value\""
+       eval "export ${var}=\"\${${var}:+\${${var}}${value:+$sep}}\$value\""
 }
 
 reset_cb() {
@@ -54,6 +47,26 @@ option () {
        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}_ | \
@@ -79,7 +92,7 @@ config_load() {
 
 config_get() {
        case "$3" in
-               "") eval "echo \${CONFIG_${1}_${2}}";;
+               "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
                *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
        esac
 }