From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Mon, 7 May 2018 12:57:47 +0000 (+0200)
Subject: rec: Check that the query distribution pipe has been set non-blocking
X-Git-Tag: dnsdist-1.3.1~93^2~1
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d10307c547c0a4178f71dac10e86428c2877b5f6;p=pdns

rec: Check that the query distribution pipe has been set non-blocking
---

diff --git a/pdns/pdns_recursor.cc b/pdns/pdns_recursor.cc
index 996c4c059..7f52becd3 100644
--- a/pdns/pdns_recursor.cc
+++ b/pdns/pdns_recursor.cc
@@ -2415,7 +2415,10 @@ static void makeThreadPipes()
       unixDie("Creating pipe for inter-thread communications");
     tps.readQueriesToThread = fd[0];
     tps.writeQueriesToThread = fd[1];
-    setNonBlocking(tps.writeQueriesToThread);
+
+    if (!setNonBlocking(tps.writeQueriesToThread)) {
+      unixDie("Making pipe for inter-thread communications non-blocking");
+    }
 
     g_pipes.push_back(tps);
   }