$NetBSD: patch-az,v 1.1.2.2 2005/09/22 16:45:00 salo Exp $

--- io.c.orig	2004-12-25 19:56:39.000000000 +0900
+++ io.c
@@ -32,7 +32,7 @@
 # define NO_LONG_FNAME
 #endif
 
-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(sun) || defined(_nec_ews)
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(sun) || defined(_nec_ews)
 # define USE_SETVBUF
 #endif