$OpenBSD: patch-sysdeps_common_fsusage_c,v 1.1 2008/02/09 16:52:25 ajacoutot Exp $
--- sysdeps/common/fsusage.c.orig	Fri Dec 28 17:23:01 2007
+++ sysdeps/common/fsusage.c	Fri Dec 28 17:23:28 2007
@@ -270,7 +270,7 @@ glibtop_get_fsusage_s (glibtop *server, glibtop_fsusag
     return;
 
 #if (defined(sun) || defined(__sun)) && (defined(__SVR4) || defined(__svr4__)) \
-	|| defined(__FreeBSD__)
+	|| defined(__FreeBSD__) || defined(__OpenBSD__)
   /* Solaris but not SunOS and FreeBSD */
   buf->block_size = fsd.f_frsize;
 #else
