diff --git a/core/lib/Drupal/Component/PhpStorage/FileStorage.php b/core/lib/Drupal/Component/PhpStorage/FileStorage.php
index d588af4..38e99a3 100644
--- a/core/lib/Drupal/Component/PhpStorage/FileStorage.php
+++ b/core/lib/Drupal/Component/PhpStorage/FileStorage.php
@@ -13,6 +13,19 @@
 class FileStorage implements PhpStorageInterface {
 
   /**
+   * The file mode for the directory created save().
+   */
+  const directoryMode = 0777;
+
+  /**
+   * Whether directoryMode should obey umask().
+   */
+  const umask = TRUE;
+
+  /**
+   * 
+
+  /**
    * The directory where the files should be stored.
    *
    * @var string
@@ -55,7 +68,11 @@ public function save($name, $code) {
     $path = $this->getFullPath($name);
     $dir = dirname($path);
     if (!file_exists($dir)) {
-      mkdir($dir, 0700, TRUE);
+      $mode = static::directoryMode;
+      if (static::umask) {
+        $mode = $mode & umask();
+      }
+      mkdir($dir, $mode, TRUE);
     }
     return (bool) file_put_contents($path, $code);
   }