From 52a802a4285647a8dfce77c0dd5ded1c4532fd73 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 10 Jun 2013 11:59:36 +0000
Subject: * ext/socket/raddrinfo.c (nogvl_getaddrinfo): work around for Ubuntu 
  13.04's getaddrinfo issue with mdns4. [ruby-list:49420]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41215 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/socket/raddrinfo.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'ext/socket/raddrinfo.c')

diff --git a/ext/socket/raddrinfo.c b/ext/socket/raddrinfo.c
index 62150218e1..aef0c64095 100644
--- a/ext/socket/raddrinfo.c
+++ b/ext/socket/raddrinfo.c
@@ -157,9 +157,18 @@ struct getaddrinfo_arg
 static void *
 nogvl_getaddrinfo(void *arg)
 {
+    int ret;
     struct getaddrinfo_arg *ptr = arg;
-    return (void *)(VALUE)getaddrinfo(ptr->node, ptr->service,
+    getaddrinfo(ptr->node, ptr->service,
 				      ptr->hints, ptr->res);
+#ifdef __linux__
+    /* On Linux (mainly Ubuntu 13.04) /etc/nsswitch.conf has mdns4 and
+     * it cause getaddrinfo to return EAI_SYSTEM/ENOENT. [ruby-list:49420]
+     */
+    if (ret == EAI_SYSTEM && errno == ENOENT)
+	ret = EAI_NONAME;
+#endif
+    return (void *)(VALUE)ret;
 }
 #endif
 
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