Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/search/src/SearchPageAccessControlHandler.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\search\SearchPageAccessControlHandler.
+ */
+
+namespace Drupal\search;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Access\AccessibleInterface;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines the access control handler for the search page entity type.
+ *
+ * @see \Drupal\search\Entity\SearchPage
+ */
+class SearchPageAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, $langcode, AccountInterface $account) {
+    /** @var $entity \Drupal\search\SearchPageInterface */
+    if (in_array($operation, array('delete', 'disable'))) {
+      if ($entity->isDefaultSearch()) {
+        return AccessResult::forbidden()->cacheUntilEntityChanges($entity);
+      }
+      else {
+        return parent::checkAccess($entity, $operation, $langcode, $account)->cacheUntilEntityChanges($entity);
+      }
+    }
+    if ($operation == 'view') {
+      if (!$entity->status()) {
+        return AccessResult::forbidden()->cacheUntilEntityChanges($entity);
+      }
+      $plugin = $entity->getPlugin();
+      if ($plugin instanceof AccessibleInterface) {
+        return $plugin->access($operation, $account, TRUE)->cacheUntilEntityChanges($entity);
+      }
+      return AccessResult::allowed()->cacheUntilEntityChanges($entity);
+    }
+    return parent::checkAccess($entity, $operation, $langcode, $account);
+  }
+
+}