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core/modules/taxonomy/src/VocabularyAccessControlHandler.php

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+<?php
+
+namespace Drupal\taxonomy;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines the access control handler for the taxonomy vocabulary entity type.
+ *
+ * @see \Drupal\taxonomy\Entity\Vocabulary
+ */
+class VocabularyAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $viewLabelOperation = TRUE;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    switch ($operation) {
+      case 'view label':
+        return AccessResult::allowedIfHasPermissions($account, [
+          'view vocabulary labels',
+          'access taxonomy overview',
+          'administer taxonomy',
+        ], 'OR');
+
+      case 'access taxonomy overview':
+      case 'view':
+        return AccessResult::allowedIfHasPermissions($account, ['access taxonomy overview', 'administer taxonomy'], 'OR');
+
+      case 'reset all weights':
+        return AccessResult::allowedIfHasPermissions($account, [
+          'administer taxonomy',
+          'edit terms in ' . $entity->id(),
+        ], 'OR');
+
+      default:
+        return parent::checkAccess($entity, $operation, $account);
+    }
+  }
+
+}