From 9cf08a1e73e80d9752d6f1d2d6518959ff40beda Mon Sep 17 00:00:00 2001
From: pooka <pooka@NetBSD.org>
Date: Wed, 2 Feb 2011 15:55:22 +0000
Subject: [PATCH] never open rumpblk backend with O_TRUNC XXX: the
 rumpuser_open interface needs a beating

---
 sys/rump/librump/rumpvfs/rumpblk.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/rump/librump/rumpvfs/rumpblk.c b/sys/rump/librump/rumpvfs/rumpblk.c
index 975d0c10b8c8..adfc3ce47c9b 100644
--- a/sys/rump/librump/rumpvfs/rumpblk.c
+++ b/sys/rump/librump/rumpvfs/rumpblk.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: rumpblk.c,v 1.42 2010/09/06 18:03:57 pooka Exp $	*/
+/*	$NetBSD: rumpblk.c,v 1.43 2011/02/02 15:55:22 pooka Exp $	*/
 
 /*
  * Copyright (c) 2009 Antti Kantee.  All Rights Reserved.
@@ -52,7 +52,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: rumpblk.c,v 1.42 2010/09/06 18:03:57 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: rumpblk.c,v 1.43 2011/02/02 15:55:22 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/buf.h>
@@ -488,6 +488,7 @@ rumpblk_open(dev_t dev, int flag, int fmt, struct lwp *l)
 
 	if (rblk->rblk_fd != -1)
 		return 0; /* XXX: refcount, open mode */
+	flag &= ~O_TRUNC;
 	fd = rumpuser_open(rblk->rblk_path, OFLAGS(flag), &error);
 	if (error)
 		return error;