Prevent changes to content

Hi

In case someone else is looking for a similar solution here is what I did to solve the issue. I coded an small module to include the posted patch and by using a module I don't have to worry about patching the roles module every time there is an update.

MY-MODULE

<?php

/**
 *  Implements hook_node_event_info()
 */
function MY-MODULE_node_event_info() {
$items = array(  
  'node_prepare' => array(
  'label' => t('Content is going to be edited'),
  'group' => t('Node'),
  'variables' => rules_events_node_variables(t('edited content'), TRUE),
  'access callback' => 'rules_node_integration_access',
  ),
);
return $items;
}

function MY-MODULE_node_prepare($node) {
  rules_invoke_event('node_prepare', $node);
}

?>
?>

Thank you,

Emil