From e8d9d7ac123c58275f2a7144dfd836ad3fcf9227 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 1/3] dumpFile(), preserve existing file permissions

When calling Filesystem::dumpFile() on an already existing file, its permissions are lost.
---
 src/Symfony/Component/Filesystem/Filesystem.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index a1ff41e892b70..7261473bb3131 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -516,7 +516,14 @@ public function dumpFile($filename, $content, $mode = 0666)
             }
 
             $this->chmod($tmpFile, $mode);
+        } else {
+            if (file_exists($filename)) {
+                @chmod($tmpFile, fileperms($filename));
+            } else {
+                @chmod($tmpFile, 0666 & ~umask());
+            }
         }
+        
         $this->rename($tmpFile, $filename, true);
     }
 

From 052947b96aaee9ffd02a89ab246892ad18fbbbcd Mon Sep 17 00:00:00 2001
From: ChS <chs2@users.noreply.github.com>
Date: Wed, 1 Mar 2017 19:29:47 +0100
Subject: [PATCH 2/3] fix CS

---
 src/Symfony/Component/Filesystem/Filesystem.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 7261473bb3131..2d9adb8b6a2b0 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -523,7 +523,7 @@ public function dumpFile($filename, $content, $mode = 0666)
                 @chmod($tmpFile, 0666 & ~umask());
             }
         }
-        
+
         $this->rename($tmpFile, $filename, true);
     }
 

From 076a225bcc51a348b4f1e54a2a4c83911a07347d Mon Sep 17 00:00:00 2001
From: ChS <chs2@users.noreply.github.com>
Date: Mon, 6 Mar 2017 13:46:40 +0100
Subject: [PATCH 3/3] ternary op and positive condition

---
 src/Symfony/Component/Filesystem/Filesystem.php | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 2d9adb8b6a2b0..16d83dc2e5fea 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -517,11 +517,7 @@ public function dumpFile($filename, $content, $mode = 0666)
 
             $this->chmod($tmpFile, $mode);
         } else {
-            if (file_exists($filename)) {
-                @chmod($tmpFile, fileperms($filename));
-            } else {
-                @chmod($tmpFile, 0666 & ~umask());
-            }
+            @chmod($tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());
         }
 
         $this->rename($tmpFile, $filename, true);