function install_system_module in Drupal 7

Installation task; install the Drupal system module.

Parameters

$install_state: An array of information about the current installation state.

File

includes/install.core.inc, line 785

API functions for installing Drupal.

Code

function install_system_module(&$install_state) {

  // Install system.module.
  drupal_install_system();

  // Call file_ensure_htaccess() to ensure that all of Drupal's standard
  // directories (e.g., the public and private files directories) have
  // appropriate .htaccess files. These directories will have already been
  // created by this point in the installer, since Drupal creates them during
  // the install_verify_requirements() task. Note that we cannot call
  // file_ensure_htaccess() any earlier than this, since it relies on
  // system.module in order to work.
  file_ensure_htaccess();

  // Enable the user module so that sessions can be recorded during the
  // upcoming bootstrap step.
  module_enable(array(
    'user',
  ), FALSE);

  // Save the list of other modules to install for the upcoming tasks.
  // variable_set() can be used now that system.module is installed.
  $modules = $install_state['profile_info']['dependencies'];

  // The installation profile is also a module, which needs to be installed
  // after all the dependencies have been installed.
  $modules[] = drupal_get_profile();
  variable_set('install_profile_modules', array_diff($modules, array(
    'system',
  )));
  $install_state['database_tables_exist'] = TRUE;

  // Prevent the hook_requirements() check from telling us to convert the
  // database to utf8mb4.
  $connection = Database::getConnection();
  if ($connection
    ->utf8mb4IsConfigurable() && $connection
    ->utf8mb4IsActive()) {
    variable_set('drupal_all_databases_are_utf8mb4', TRUE);
  }
}