From 935afe650ac597041f8323eebce18eb5465d11be Mon Sep 17 00:00:00 2001
From: Markus Staab <maggus.staab@googlemail.com>
Date: Fri, 13 Feb 2015 16:10:22 +0100
Subject: [PATCH] [PROCESS] make sure /dev/tty is readable

When using Process from Web-SAPI it is likely that the webserver user
doesn't has rights to use /dev/tty
---
 src/Symfony/Component/Process/Process.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index d7626029251c..0c886d1c0ef6 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -792,6 +792,9 @@ public function setTty($tty)
         if ('\\' === DIRECTORY_SEPARATOR && $tty) {
             throw new RuntimeException('TTY mode is not supported on Windows platform.');
         }
+        if ($tty && (!file_exists('/dev/tty') || !is_readable('/dev/tty'))) {
+            throw new RuntimeException('TTY mode requires /dev/tty to be readable.');
+        }
 
         $this->tty = (bool) $tty;