From c5c9d71df333a8c863ed29cb9e60f09b6dfeea4c Mon Sep 17 00:00:00 2001
From: Emery Hemingway <emery@vfemail.net>
Date: Sat, 24 Jun 2017 16:42:30 -0500
Subject: [PATCH] libc: track O_ACCMODE flags from open

Fix #2457
---
 repos/libports/src/lib/libc/vfs_plugin.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/repos/libports/src/lib/libc/vfs_plugin.cc b/repos/libports/src/lib/libc/vfs_plugin.cc
index 5acf6e582f..d384fce907 100644
--- a/repos/libports/src/lib/libc/vfs_plugin.cc
+++ b/repos/libports/src/lib/libc/vfs_plugin.cc
@@ -230,7 +230,7 @@ Libc::File_descriptor *Libc::Vfs_plugin::open(char const *path, int flags,
 		return nullptr;
 	}
 
-	fd->flags = flags & (O_NONBLOCK|O_APPEND);
+	fd->flags = flags & (O_ACCMODE|O_NONBLOCK|O_APPEND);
 
 	if ((flags & O_TRUNC) && (ftruncate(fd, 0) == -1)) {
 		errno = EINVAL; /* XXX which error code fits best ? */