From 78705e74f31b0e6b70ca38780f27dfcd901e2658 Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gunnar.beutner@netways.de>
Date: Wed, 18 May 2016 15:52:29 +0200
Subject: [PATCH] Open the command pipe with O_RDWR

fixes #11807
---
 lib/compat/externalcommandlistener.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/compat/externalcommandlistener.cpp b/lib/compat/externalcommandlistener.cpp
index dcd57eb3f..359800dbf 100644
--- a/lib/compat/externalcommandlistener.cpp
+++ b/lib/compat/externalcommandlistener.cpp
@@ -94,7 +94,7 @@ void ExternalCommandListener::CommandPipeThread(const String& commandPath)
 	}
 
 	for (;;) {
-		int fd = open(commandPath.CStr(), O_RDONLY | O_NONBLOCK);
+		int fd = open(commandPath.CStr(), O_RDWR | O_NONBLOCK);
 
 		if (fd < 0) {
 			Log(LogCritical, "ExternalCommandListener")