From a2794c70fc7cf03de0d2bf6dd0b9dd0d20d4b848 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim=20D=C3=BCsterhus?= <duesterhus@woltlab.com>
Date: Mon, 8 Sep 2014 18:24:12 +0200
Subject: [PATCH] Write disk cache atomically

---
 .../lib/system/cache/source/DiskCacheSource.class.php | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/wcfsetup/install/files/lib/system/cache/source/DiskCacheSource.class.php b/wcfsetup/install/files/lib/system/cache/source/DiskCacheSource.class.php
index 639d8ad43e..d37cd417e9 100644
--- a/wcfsetup/install/files/lib/system/cache/source/DiskCacheSource.class.php
+++ b/wcfsetup/install/files/lib/system/cache/source/DiskCacheSource.class.php
@@ -1,7 +1,7 @@
 <?php
 namespace wcf\system\cache\source;
 use wcf\system\exception\SystemException;
-use wcf\system\io\File;
+use wcf\system\io\AtomicWriter;
 use wcf\system\Callback;
 use wcf\system\Regex;
 use wcf\system\WCF;
@@ -68,10 +68,11 @@ class DiskCacheSource implements ICacheSource {
 	 * @see	\wcf\system\cache\source\ICacheSource::set()
 	 */
 	public function set($cacheName, $value, $maxLifetime) {
-		$file = new File($this->getFilename($cacheName));
-		$file->write("<?php exit; /* cache: ".$cacheName." (generated at ".gmdate('r').") DO NOT EDIT THIS FILE */ ?>\n");
-		$file->write(serialize($value));
-		$file->close();
+		$writer = new AtomicWriter($this->getFilename($cacheName));
+		$writer->write("<?php exit; /* cache: ".$cacheName." (generated at ".gmdate('r').") DO NOT EDIT THIS FILE */ ?>\n");
+		$writer->write(serialize($value));
+		$writer->flush();
+		$writer->close();
 		
 		// unset current DirectoryUtil object to make sure new cache file
 		// can be deleted in the same request
-- 
2.20.1