class CoreUpdater

installer_authorize_run_update in core/modules/installer/installer.authorize.inc

Updates existing projects when invoked by authorize.php.

system_autoload_info in core/modules/system/system.module

Implements hook_autoload_info().

system_updater_info in core/modules/system/system.module

Implements hook_updater_info().

UpdateCoreTestCase::testGetUpdaterFromDirectory in core/modules/update/tests/update.test

Test that getUpdaterFromDirectory() gets the right class for core updates.

class CoreUpdater extends Updater {

  /**
   * Return the Backdrop core directory.
   */
  public function getInstallDirectory() {
    return realpath(BACKDROP_ROOT);
  }

  public function isInstalled() {
    return (bool) file_exists($this->getInstallDirectory());
  }

  public static function canUpdateDirectory($directory) {
    return (self::getProjectType($directory) == 'core');
  }

  static function canUpdate($project_name) {
    return (bool) $this->isInstalled();
  }

  /**
   * List of post install actions.
   */
  public function postInstall() {
    $project = array();
    $project['name'] = $this->name;
    $project['type'] = 'core';
    $_SESSION['project_browser_installed_projects'][$this->name] = $project;
  }

  /**
   * List of post install actions.
   */
  public function postInstallTasks() {
    return array();
  }

  public function postUpdateTasks() {
    // We don't want to check for DB updates here, we do that once for all
    // updated modules on the landing page.
  }

}