--- /dev/null
+<?php
+
+namespace Drupal\layout_builder\Access;
+
+use Drupal\Core\Cache\RefinableCacheableDependencyInterface;
+use Drupal\Core\Routing\Access\AccessInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\layout_builder\SectionStorageInterface;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Provides an access check for the Layout Builder defaults.
+ *
+ * @internal
+ */
+class LayoutBuilderAccessCheck implements AccessInterface {
+
+ /**
+ * Checks routing access to the layout.
+ *
+ * @param \Drupal\layout_builder\SectionStorageInterface $section_storage
+ * The section storage.
+ * @param \Drupal\Core\Session\AccountInterface $account
+ * The current user.
+ * @param \Symfony\Component\Routing\Route $route
+ * The route to check against.
+ *
+ * @return \Drupal\Core\Access\AccessResultInterface
+ * The access result.
+ */
+ public function access(SectionStorageInterface $section_storage, AccountInterface $account, Route $route) {
+ $operation = $route->getRequirement('_layout_builder_access');
+ $access = $section_storage->access($operation, $account, TRUE);
+ if ($access instanceof RefinableCacheableDependencyInterface) {
+ $access->addCacheableDependency($section_storage);
+ }
+ return $access;
+ }
+
+}