performance-art.fr/sites/all/modules/gui/contentsadminrelink/contentsadminrelink.module

<?php
/**
 * @file
 * This is the file description for Contentsadminrelink module.
 *
 * In this more verbose, multi-line description, you can specify what this
 * file does exactly. Make sure to wrap your documentation in column 78 so
 * that the file can be displayed nicely in default-sized consoles.
 */

/**
 * Implements hook_menu().
 */
function contentsadminrelink_menu() {
  $items = array();
  return $items;
}


/**
 * Implements hook_url_outbound_alter().
 */
# useless, just play with perms and menu_alter
// function contentsadminrelink_url_outbound_alter(&$path, &$options, $original_path) {
  // if ($path == 'admin/content' || $path == 'admin/content/node') { 
  //   $path = 'admin/content/nodes';
  // }
//}

/**
 * Implements hook_permission().
 */
function contentsadminrelink_permission() {
  return array(
    'access core content overview' =>  array(
      'title' => t('Access core content overview'),
      // 'description' => t('Perform administration tasks for my module.'),
    ),
    'access core media overview' =>  array(
      'title' => t('Access classic media overview'),
      // 'description' => t('Perform administration tasks for my module.'),
    ),

  );
}

/**
 * Implements hook_menu_alter().
 */
function contentsadminrelink_menu_alter(&$items) {
	// dsm($items, '$items');
	if(isset($items['admin/content']))
		$items['admin/content']['access arguments'] = array('access core content overview');

	if(isset($items['admin/content/node']))
		$items['admin/content/node']['access arguments'] = array('access core content overview');

	if(isset($items['admin/content/media']))
		$items['admin/content/media']['access arguments'] = array('access classic media overview');
	
	// dsm($items, '$items');
}

/**
 * Implements hook_menu_local_tasks_alter().
 */
function contentsadminrelink_menu_local_tasks_alter(&$data, $router_item, $root_path) {
  switch($root_path){  
    case 'admin/content/nodes' : // for example 'page/view/news'
      $item = menu_get_item('node/add'); 
      if ($item['access']) {       
        $data['actions']['output'][] = array(
          '#theme' => 'menu_local_action',
          '#link' => $item,
        );
      }
    break;  
    // case 'admin/content/medias' : // for example 'page/view/news'
    //   $item = menu_get_item('admin/content/media/import'); 
    //   if ($item['access']) {       
    //     $data['actions']['output'][] = array(
    //       '#theme' => 'menu_local_action',
    //       '#link' => $item,
    //     );
    //   }
    // break;  
		
  }  

}