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# -*- coding: utf-8 -*-
# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is based on
# Lib/posixpath.py of cpython
#
# Copyright (c) 2001-2022 Python Software Foundation. All rights reserved.
# It is licensed under the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
# (See LICENSES/PSF-2.0.txt in this collection)
# SPDX-License-Identifier: PSF-2.0
from __future__ import absolute_import, division, print_function
__metaclass__ = type
import os
def ismount(path):
"""Test whether a path is a mount point
This is a copy of the upstream version of ismount(). Originally this was copied here as a workaround
until Python issue 2466 was fixed. Now it is here so this will work on older versions of Python
that may not have the upstream fix.
https://github.com/ansible/ansible-modules-core/issues/2186
http://bugs.python.org/issue2466
"""
try:
s1 = os.lstat(path)
except (OSError, ValueError):
# It doesn't exist -- so not a mount point. :-)
return False
else:
# A symlink can never be a mount point
if os.path.stat.S_ISLNK(s1.st_mode):
return False
if isinstance(path, bytes):
parent = os.path.join(path, b'..')
else:
parent = os.path.join(path, '..')
parent = os.path.realpath(parent)
try:
s2 = os.lstat(parent)
except (OSError, ValueError):
return False
dev1 = s1.st_dev
dev2 = s2.st_dev
if dev1 != dev2:
return True # path/.. on a different device as path
ino1 = s1.st_ino
ino2 = s2.st_ino
if ino1 == ino2:
return True # path/.. is the same i-node as path
return False