Only fix permissions of configfiles on first install.

debian/changelog

@@ -11,7 +11,10 @@ nut (2.6.5-2) UNRELEASED; urgency=low
   * debian/nut-client.preinst: revert /etc/nut/nut.conf mangling done by older
     versions of the postinst (Closes: #677054)
 
- -- Laurent Bigonville <bigon@debian.org>  Sun, 02 Dec 2012 13:48:20 +0100
+  [ Ivo De Decker ]
+  * Only fix permissions of configfiles on first install.
+
+ -- Laurent Bigonville <bigon@debian.org>  Sun, 13 Jan 2013 17:31:15 +0100
 
 nut (2.6.5-1) experimental; urgency=low
 

debian/nut-client.postinst

@@ -19,6 +19,8 @@ case "$1" in
 #    fi
 
     # make sure that conffiles are secured and have the correct ownerships
+    # on first install
+    if [ -z "$2" ] ; then
         if [ -d /etc/nut/ ] ; then
           chown root:nut /etc/nut/
         fi
@@ -28,6 +30,7 @@ case "$1" in
                 chmod 640 /etc/nut/$file
             fi
         done
+    fi
 
     # make sure that /var/run/nut exists and has the correct ownerships
     if [ ! -d /var/run/nut ] ; then

debian/nut-server.postinst

@@ -19,6 +19,8 @@ case "$1" in
 #    fi
 
     # make sure that conffiles are secured and have the correct ownerships
+    # on first install
+    if [ -z "$2" ] ; then
         if [ -d /etc/nut/ ] ; then
           chown root:nut /etc/nut/
         fi
@@ -28,6 +30,7 @@ case "$1" in
                 chmod 640 /etc/nut/$file
             fi
         done
+    fi
 
     # make sure that /var/run/nut exists and has the correct ownerships
     if [ ! -d /var/run/nut ] ; then