From 4469d8f0fb298de784119943900845d04702f69f Mon Sep 17 00:00:00 2001
From: Sven Herrmann <sven.herrmann@posteo.de>
Date: Fri, 29 May 2020 13:08:43 +0000
Subject: [PATCH] pkg/fatfs/fatfs_vfs: fix flag translation in _open

---
 pkg/fatfs/fatfs_vfs/fatfs_vfs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pkg/fatfs/fatfs_vfs/fatfs_vfs.c b/pkg/fatfs/fatfs_vfs/fatfs_vfs.c
index a41168d1a9..0892c8ab6b 100644
--- a/pkg/fatfs/fatfs_vfs/fatfs_vfs.c
+++ b/pkg/fatfs/fatfs_vfs/fatfs_vfs.c
@@ -151,7 +151,12 @@ static int _open(vfs_file_t *filp, const char *name, int flags, mode_t mode,
         fatfs_flags |= FA_CREATE_ALWAYS;
     }
     if ((flags & O_CREAT) == O_CREAT) {
-        fatfs_flags |= FA_CREATE_NEW;
+        if ((flags & O_EXCL) == O_EXCL) {
+            fatfs_flags |= FA_CREATE_NEW;
+        }
+        else {
+            fatfs_flags |= FA_OPEN_ALWAYS;
+        }
     }
     else {
         fatfs_flags |= FA_OPEN_EXISTING;