From dff5e3c54296e2ccc3d403cec9f31ecd2aafca9f Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 14 Nov 2013 21:21:08 +0100
Subject: [PATCH] Fail hard if anything attempts to wipe the entire
 filesystem/partition, fixes #2409

---
 src/Composer/Util/Filesystem.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Composer/Util/Filesystem.php b/src/Composer/Util/Filesystem.php
index 2e18eb71e..8771776fc 100644
--- a/src/Composer/Util/Filesystem.php
+++ b/src/Composer/Util/Filesystem.php
@@ -69,6 +69,10 @@ class Filesystem
             return true;
         }
 
+        if (preg_match('{^(?:[a-z]:)?[/\\\\]+$}i', $directory)) {
+            throw new \RuntimeException('Aborting an attempted deletion of '.$directory.', this was probably not intended, if it is a real use case please report it.');
+        }
+
         if (!function_exists('proc_open')) {
             return $this->removeDirectoryPhp($directory);
         }