$NetBSD: patch-ae,v 1.1.1.1 2009/08/05 02:59:48 tnn Exp $

--- mozilla/nsprpub/pr/src/misc/prnetdb.c.orig	2009-06-29 18:15:07.000000000 +0200
+++ mozilla/nsprpub/pr/src/misc/prnetdb.c
@@ -114,6 +114,11 @@ PRLock *_pr_dnsLock = NULL;
 #define _PR_HAVE_5_ARG_GETPROTO_R
 #endif
 
+#if __DragonFly_version >= 200202
+#define _PR_HAVE_GETPROTO_R
+#define _PR_HAVE_5_ARG_GETPROTO_R
+#endif
+
 /* BeOS has glibc but not the glibc-style getprotobyxxx_r functions. */
 #if (defined(__GLIBC__) && __GLIBC__ >= 2 && !defined(XP_BEOS))
 #define _PR_HAVE_GETPROTO_R
@@ -331,7 +336,7 @@ _pr_QueryNetIfs(void)
 }
 
 #elif (defined(DARWIN) && defined(HAVE_GETIFADDRS)) || defined(FREEBSD) \
-    || defined(NETBSD) || defined(OPENBSD)
+    || defined(NETBSD) || defined(OPENBSD) || defined(DRAGONFLY)
 
 /*
  * Use the BSD getifaddrs function.
@@ -2039,7 +2044,17 @@ PR_IMPLEMENT(PRAddrInfo *) PR_GetAddrInf
          */
         hints.ai_socktype = SOCK_STREAM;
 
+/* NetBSD >= 2.99.9 has a thread-safe resolver */
+#if defined(__NetBSD_Version__) && __NetBSD_Version__ < 299000900
+	LOCK_DNS();
+#endif
+
         rv = GETADDRINFO(hostname, NULL, &hints, &res);
+
+#if defined(__NetBSD_Version__) && __NetBSD_Version__ < 299000900
+        UNLOCK_DNS();
+#endif
+
         if (rv == 0)
             return (PRAddrInfo *) res;