From 7a0d29fc59feff3ea2f81a65030015b8d819d7fd Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Mon, 6 Nov 2017 07:15:20 -0600
Subject: [PATCH] apps/examples/userfs:  Handle the O_TRUNC open flag.

---
 examples/userfs/userfs_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/examples/userfs/userfs_main.c b/examples/userfs/userfs_main.c
index f53a75365..12d840a96 100644
--- a/examples/userfs/userfs_main.c
+++ b/examples/userfs/userfs_main.c
@@ -233,6 +233,11 @@ static int ufstest_open(FAR void *volinfo, FAR const char *relpath,
           return -ENOMEM;
         }
 
+      if ((oflags & O_TRUNC) != 0)
+        {
+          file->inuse = 0;
+        }
+
       if ((oflags & (O_WROK | O_APPEND)) == (O_WROK | O_APPEND))
         {
           opriv->pos = file->inuse;