Using copy() and filter_system_files()

update_psa

@@ -90,12 +90,18 @@ update() {
     fi
 
     local files=$(changed_file_names)
+    local system_files=$(filter_system_files "$files")   # conf/ini-files
 
-    if ! check_md5_for_changed_conf_and_ini_files "$files" ; then
+    if ! check_md5_for_changed_conf_and_ini_files "$system_files" ; then
         log_error "$func:${LINENO}: new customer files wrong"
         revert_customer_repository ; exit 1
     fi
 
+    if ! copy $system_files; then
+        log_error "$func:${LINENO}: copy operation failed"
+        revert_customer_repository ; exit 1
+    fi
+
     if grep -qE ".*opkg_commands.*?" <<< $files; then
         # read opkg_cmds: each line respresents an opkg-command
         readarray opkg_commands < <(cat $opkg_cmds_file)