--- /dev/null
+<?php
+
+namespace Drupal\entity;
+
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Generates entity permissions via their permission providers.
+ *
+ * @see \Drupal\entity\EntityPermissionProvider
+ * @see \Drupal\entity\UncacheableEntityPermissionProvider
+ */
+class EntityPermissions implements ContainerInjectionInterface {
+
+ /**
+ * The entity type manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * Constructs a new EntityPermissions object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity type manager.
+ */
+ public function __construct(EntityTypeManagerInterface $entity_type_manager) {
+ $this->entityTypeManager = $entity_type_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('entity_type.manager')
+ );
+ }
+
+ /**
+ * Builds a list of permissions for the participating entity types.
+ *
+ * @return array
+ * The permissions.
+ */
+ public function buildPermissions() {
+ $permissions = [];
+ /** @var \Drupal\Core\Entity\EntityTypeInterface[] $entity_types */
+ foreach ($this->entityTypeManager->getDefinitions() as $entity_type) {
+ if ($entity_type->hasHandlerClass('permission_provider')) {
+ $permission_provider_class = $entity_type->getHandlerClass('permission_provider');
+ $permission_provider = $this->entityTypeManager->createHandlerInstance($permission_provider_class, $entity_type);
+ $permissions += $permission_provider->buildPermissions($entity_type);
+ }
+ }
+
+ return $permissions;
+ }
+
+}