$NetBSD: patch-ac,v 1.4 2015/12/29 23:34:45 dholland Exp $

Dragonfly support.

--- native/jni/java-nio/gnu_java_nio_VMChannel.c.orig	2007-01-10 15:49:02.000000000 +0000
+++ native/jni/java-nio/gnu_java_nio_VMChannel.c
@@ -79,6 +79,10 @@ exception statement from your version. *
 #define ALIGN_DOWN(p,s) ((p) - ((p) % (s)))
 #define ALIGN_UP(p,s) ((p) + ((s) - ((p) % (s))))
 
+#if defined(__DragonFly__) && !defined(O_SYNC)
+#define O_SYNC O_FSYNC
+#endif
+
 /*
  * Limit to maximum of 16 buffers
  */