1# Copyright 2014 The Chromium OS Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import os
6import sys
7
8# Parent passes test file path as first argument.
9test_file = sys.argv[1]
10
11# We entered a mount namespace where |test_file| should not be accessible.
12if os.access(test_file, os.F_OK):
13    sys.exit(1)
14