Add support for overriding values via autoconfig.local

Adjusted sbin/grml-autoconfig to write changes to this new file
Updated documentation

autoconfig

@@ -1,10 +1,16 @@
 # Filename:      /etc/grml/autoconfig
-# Purpose:       configuration for grml-autoconfig
+# Purpose:       global configuration for grml-autoconfig
 # Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
 # Bug-Reports:   see http://grml.org/bugs/
 # License:       This file is licensed under the GPL v2.
 ################################################################################
 
+################################################################################
+# Notice: Please do not edit this file! Use grml-autoconfig or
+# /etc/grml/autoconfig.local instead!
+################################################################################
+
+
 ################################################################################
 # Notice: you can configure grml-autoconfig via adjusting the following values.
 # Set them to 'yes' to activate them and to 'no' to deactivate them.
@@ -117,4 +123,12 @@ CONFIG_VMWARE='yes'           # vmware specific stuff (use xorg.conf.vmware)
 CONFIG_WELCOME='yes'          # play welcome sound (audio)
 CONFIG_WONDERSHAPER='yes'     # start wondershaper with options provided via bootparam
 CONFIG_XSTARTUP='yes'         # start X window system via grml-x [only in live-mode]
+
+
+# config for local configuration file
+
+CONFIG_AUTOCONFIG_LOCAL='/etc/grml/autoconfig.local'
+
+[ -e ${CONFIG_AUTOCONFIG_LOCAL} ] && . ${CONFIG_AUTOCONFIG_LOCAL}
+
 ## END OF FILE #################################################################

autoconfig.local

@@ -0,0 +1,6 @@
+# Filename:      /etc/grml/autoconfig.local
+# Purpose:       local configuration for grml-autoconfig
+# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
+# Bug-Reports:   see http://grml.org/bugs/
+# License:       This file is licensed under the GPL v2.
+################################################################################

debian/rules

@@ -35,6 +35,7 @@ install: build
 	# Add here commands to install the package into debian/grml-autoconfig.
 	install -m 755 grml-autoconfig      debian/grml-autoconfig/etc/init.d/grml-autoconfig
 	install -m 644 autoconfig           debian/grml-autoconfig/etc/grml/autoconfig
+	install -m 644 autoconfig.local     debian/grml-autoconfig/etc/grml/autoconfig.local
 	install -m 755 autoconfig.functions debian/grml-autoconfig/etc/grml/autoconfig.functions
 	install -m 644 language-functions   debian/grml-autoconfig/etc/grml/language-functions
 	install -m 755 sbin/grml-autoconfig debian/grml-autoconfig/usr/sbin/grml-autoconfig

doc/grml-autoconfig.8.txt

@@ -61,10 +61,15 @@ Dialog interface to the configuration file /etc/grml/autoconfig.
 
   */etc/grml/autoconfig*::
 
-Configuration file for grml-autoconfig framework. You can either edit this
-configuration file manually of use the dialog interface
+Default configuration file for grml-autoconfig framework.  You can override
+settings via /etc/grml/autoconfig.local or use the dialog interface
 /usr/sbin/grml-autoconfig.
 
+  */etc/grml/autoconfig.local*::
+User specific configuration file for grml-autoconfig. You can edit it directly
+or use the dialog interface /usr/sbin/grml-autoconfig.
+
+
   */etc/grml/autoconfig.functions*::
 
 Main functions of the grml-autoconfig. You do not need to configure or execute

sbin/grml-autoconfig

@@ -18,33 +18,48 @@ TMPFILE="$(mktemp)"
 AUTOCONFIG=/etc/grml/autoconfig
 [ -r $AUTOCONFIG ] || exit 1
 
+. $AUTOCONFIG
+
 # helper functions
 activate_value()
 {
-  sed -i "s/$1.*/$1'yes'/" $AUTOCONFIG
+  check_entry $1
+  sed -i "s/$1.*/$1'yes'/" ${CONFIG_AUTOCONFIG_LOCAL}
 }
 
 deactivate_value()
 {
-  sed -i "s/$1.*/$1'no'/" $AUTOCONFIG
+  check_entry $1
+  sed -i "s/$1.*/$1'no'/" ${CONFIG_AUTOCONFIG_LOCAL}
 }
 
 check_setting()
 {
   grep -q $* $TMPFILE && return 0 || return 1
 }
 
+check_entry()
+{
+  if ! grep -q ${1} ${CONFIG_AUTOCONFIG_LOCAL} 2>/dev/null ; then
+    grep $1 ${AUTOCONFIG} >> ${CONFIG_AUTOCONFIG_LOCAL}
+  fi
+}
+
+is_set()
+{
+    [ $1 = 'yes' ] && return 0 || return 1
+}
 check_current_state()
 {
-  grep -q '^CONFIG_DHCP=.*yes'     $AUTOCONFIG && DHCPSTATUS=ON     || DHCPSTATUS=OFF
+  is_set $CONFIG_DHCP       && DHCPSTATUS=ON     || DHCPSTATUS=OFF
   if [ "$(grep '^auto' /etc/network/interfaces | sed 's/ lo// ; s/auto// ; s/ //g')" != "" ] ; then
      DHCPSTATUS=OFF
   fi
-  grep -q '^CONFIG_FSTAB=.*yes'    $AUTOCONFIG && FSTABSTATUS=ON    || FSTABSTATUS=OFF
-  grep -q '^CONFIG_CPU=.*yes'      $AUTOCONFIG && CPUSTATUS=ON      || CPUSTATUS=OFF
-  grep -q '^CONFIG_ACPI_APM=.*yes' $AUTOCONFIG && ACPI_APMSTATUS=ON || ACPI_APMSTATUS=OFF
-  grep -q '^CONFIG_SYSLOG=.*yes'   $AUTOCONFIG && SYSLOGSTATUS=ON   || SYSLOGSTATUS=OFF
-  grep -q '^CONFIG_GPM=.*yes'      $AUTOCONFIG && GPMSTATUS=ON      || GPMSTATUS=OFF
+  is_set $CONFIG_FSTAB      && FSTABSTATUS=ON    || FSTABSTATUS=OFF
+  is_set $CONFIG_CPU        && CPUSTATUS=ON      || CPUSTATUS=OFF
+  is_set $CONFIG_ACPI_APM   && ACPI_APMSTATUS=ON || ACPI_APMSTATUS=OFF
+  is_set $CONFIG_SYSLOG     && SYSLOGSTATUS=ON   || SYSLOGSTATUS=OFF
+  is_set $CONFIG_GPM        && GPMSTATUS=ON      || GPMSTATUS=OFF
 }
 
 # main program
@@ -57,7 +72,7 @@ interface to activate or deactivate some features.
 If you do not know what to do at this stage just leave it untouched,
 the defaults are the recommended values.
 
-All the configuration happens in the file /etc/grml/autoconfig - you can
+All the configuration happens in the file /etc/grml/autoconfig.local - you can
 edit it manually as well.
 " 0 0 0 \
 dhcp "check for network devices and run pump (get ip-address via DHCP)" $DHCPSTATUS \