From 2bd2384bc051ad6adf42215505cd6834275cffec Mon Sep 17 00:00:00 2001
From: Karl Fessel <karl.fessel@ovgu.de>
Date: Fri, 12 Mar 2021 13:13:32 +0100
Subject: [PATCH] examples/filesystem: posix open needs mode if O_CREATE

umask is applied to mode (mode & ~umask) -> 00777 is a good default
see: man 2 open
---
 examples/filesystem/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/filesystem/main.c b/examples/filesystem/main.c
index 759d61c4ab..add2dda4ec 100644
--- a/examples/filesystem/main.c
+++ b/examples/filesystem/main.c
@@ -287,7 +287,7 @@ static int _tee(int argc, char **argv)
     }
     fclose(f);
 #else
-    int fd = open(argv[1], O_RDWR | O_CREAT);
+    int fd = open(argv[1], O_RDWR | O_CREAT, 00777);
     if (fd < 0) {
         printf("error while trying to create %s\n", argv[1]);
         return 1;