constant MAINTENANCE_MODE

Global flag to indicate the site is in installation mode.

8 uses of MAINTENANCE_MODE

ajax_footer in core/includes/ajax.inc: Performs end-of-Ajax-request tasks.
backdrop_exit in core/includes/common.inc: Performs end-of-request tasks.
backdrop_installation_attempted in core/includes/bootstrap.inc: Returns TRUE if a Backdrop installation is currently being attempted.
dashboard_user_login in core/modules/dashboard/dashboard.module: Implements hook_user_login().
error_displayable in core/includes/errors.inc: Determines whether an error should be displayed.

core/install.php, line 22: Initiates a browser-based installation of Backdrop.

define('MAINTENANCE_MODE', 'install')