constant MAINTENANCE_MODE

  1. 7.x drupal-7.x/install.php MAINTENANCE_MODE
  2. 7.x drupal-7.x/authorize.php MAINTENANCE_MODE
  3. 7.x drupal-7.x/update.php MAINTENANCE_MODE
  4. 6.x drupal-6.x/install.php MAINTENANCE_MODE
  5. 6.x drupal-6.x/update.php MAINTENANCE_MODE

Global flag to identify update.php run, and so avoid various unwanted operations, such as hook_init() and hook_exit() invokes, css/js preprocessing and translation, and solve some theming issues. This flag is checked on several places in Drupal code (not just update.php).

7 uses of MAINTENANCE_MODE
drupal_flush_all_caches in drupal-6.x/includes/common.inc
Flush all cached data on the site.
drupal_get_css in drupal-6.x/includes/common.inc
Returns a themed representation of all stylesheets that should be attached to the page.
drupal_get_js in drupal-6.x/includes/common.inc
Returns a themed presentation of all JavaScript code for the current page.
drupal_goto in drupal-6.x/includes/common.inc
Send the user to a different Drupal page.
update_flush_caches in drupal-6.x/modules/update/update.module
Implementation of hook_flush_caches().

... See full list

File

drupal-6.x/update.php, line 21
Administrative page for handling updates from one Drupal version to another.

Code

define('MAINTENANCE_MODE', 'update')