95 lines
3.9 KiB
Python
95 lines
3.9 KiB
Python
# This code is part of Ansible, but is an independent component.
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# This particular file snippet, and this file snippet only, is based on
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# Lib/posixpath.py of cpython
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# It is licensed under the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
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#
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# 1. This LICENSE AGREEMENT is between the Python Software Foundation
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# ("PSF"), and the Individual or Organization ("Licensee") accessing and
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# otherwise using this software ("Python") in source or binary form and
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# its associated documentation.
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#
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# 2. Subject to the terms and conditions of this License Agreement, PSF hereby
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# grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
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# analyze, test, perform and/or display publicly, prepare derivative works,
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# distribute, and otherwise use Python alone or in any derivative version,
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# provided, however, that PSF's License Agreement and PSF's notice of copyright,
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# i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
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# 2011, 2012, 2013, 2014, 2015 Python Software Foundation; All Rights Reserved"
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# are retained in Python alone or in any derivative version prepared by Licensee.
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#
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# 3. In the event Licensee prepares a derivative work that is based on
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# or incorporates Python or any part thereof, and wants to make
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# the derivative work available to others as provided herein, then
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# Licensee hereby agrees to include in any such work a brief summary of
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# the changes made to Python.
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#
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# 4. PSF is making Python available to Licensee on an "AS IS"
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# basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
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# IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
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# DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
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# FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
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# INFRINGE ANY THIRD PARTY RIGHTS.
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#
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# 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
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# FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
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# A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
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# OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
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#
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# 6. This License Agreement will automatically terminate upon a material
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# breach of its terms and conditions.
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#
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# 7. Nothing in this License Agreement shall be deemed to create any
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# relationship of agency, partnership, or joint venture between PSF and
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# Licensee. This License Agreement does not grant permission to use PSF
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# trademarks or trade name in a trademark sense to endorse or promote
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# products or services of Licensee, or any third party.
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#
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# 8. By copying, installing or otherwise using Python, Licensee
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# agrees to be bound by the terms and conditions of this License
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# Agreement.
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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import os
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def ismount(path):
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"""Test whether a path is a mount point
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This is a copy of the upstream version of ismount(). Originally this was copied here as a workaround
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until Python issue 2466 was fixed. Now it is here so this will work on older versions of Python
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that may not have the upstream fix.
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https://github.com/ansible/ansible-modules-core/issues/2186
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http://bugs.python.org/issue2466
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"""
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try:
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s1 = os.lstat(path)
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except (OSError, ValueError):
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# It doesn't exist -- so not a mount point. :-)
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return False
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else:
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# A symlink can never be a mount point
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if os.path.stat.S_ISLNK(s1.st_mode):
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return False
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if isinstance(path, bytes):
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parent = os.path.join(path, b'..')
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else:
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parent = os.path.join(path, '..')
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parent = os.path.realpath(parent)
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try:
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s2 = os.lstat(parent)
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except (OSError, ValueError):
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return False
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dev1 = s1.st_dev
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dev2 = s2.st_dev
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if dev1 != dev2:
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return True # path/.. on a different device as path
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ino1 = s1.st_ino
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ino2 = s2.st_ino
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if ino1 == ino2:
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return True # path/.. is the same i-node as path
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return False
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