From 040a9abdbfae6c4c068d7d4a202ccf2f87139e04 Mon Sep 17 00:00:00 2001
From: ChS <chs2@users.noreply.github.com>
Date: Wed, 1 Mar 2017 19:26:18 +0100
Subject: [PATCH] dumpFile(), preserve existing file permissions

---
 src/Symfony/Component/Filesystem/Filesystem.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index a1ff41e892..16d83dc2e5 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -516,7 +516,10 @@ class Filesystem
             }
 
             $this->chmod($tmpFile, $mode);
+        } else {
+            @chmod($tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());
         }
+
         $this->rename($tmpFile, $filename, true);
     }