diff --git a/lib/ansible/module_utils/ismount.py b/lib/ansible/module_utils/ismount.py new file mode 100644 index 0000000000..808f256c02 --- /dev/null +++ b/lib/ansible/module_utils/ismount.py @@ -0,0 +1,90 @@ +# 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 +# It is licensed under the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2 +# +# 1. This LICENSE AGREEMENT is between the Python Software Foundation +# ("PSF"), and the Individual or Organization ("Licensee") accessing and +# otherwise using this software ("Python") in source or binary form and +# its associated documentation. +# +# 2. Subject to the terms and conditions of this License Agreement, PSF hereby +# grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce, +# analyze, test, perform and/or display publicly, prepare derivative works, +# distribute, and otherwise use Python alone or in any derivative version, +# provided, however, that PSF's License Agreement and PSF's notice of copyright, +# i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, +# 2011, 2012, 2013, 2014, 2015 Python Software Foundation; All Rights Reserved" +# are retained in Python alone or in any derivative version prepared by Licensee. +# +# 3. In the event Licensee prepares a derivative work that is based on +# or incorporates Python or any part thereof, and wants to make +# the derivative work available to others as provided herein, then +# Licensee hereby agrees to include in any such work a brief summary of +# the changes made to Python. +# +# 4. PSF is making Python available to Licensee on an "AS IS" +# basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR +# IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND +# DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS +# FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT +# INFRINGE ANY THIRD PARTY RIGHTS. +# +# 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON +# FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS +# A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, +# OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. +# +# 6. This License Agreement will automatically terminate upon a material +# breach of its terms and conditions. +# +# 7. Nothing in this License Agreement shall be deemed to create any +# relationship of agency, partnership, or joint venture between PSF and +# Licensee. This License Agreement does not grant permission to use PSF +# trademarks or trade name in a trademark sense to endorse or promote +# products or services of Licensee, or any third party. +# +# 8. By copying, installing or otherwise using Python, Licensee +# agrees to be bound by the terms and conditions of this License +# Agreement. + +import os + + +def ismount(path): + """Test whether a path is a mount point + clone of os.path.ismount (from cpython Lib/posixpath.py) + fixed to solve https://github.com/ansible/ansible-modules-core/issues/2186 + and workaround non-fixed http://bugs.python.org/issue2466 + this should be rewritten as soon as python issue 2466 is fixed + probably check for python version and use os.path.ismount if fixed + + to remove replace in this file ismount( -> os.path.ismount( and remove this + function""" + + try: + s1 = os.lstat(path) + except OSError: + # the OSError should be handled with more care + # it could be a "permission denied" but path is still a mount + return False + else: + # A symlink can never be a mount point + if os.stat.S_ISLNK(s1.st_mode): + return False + + parent = os.path.join(path, os.path.pardir) + parent = os.path.realpath(parent) + + try: + s2 = os.lstat(parent) + except OSError: + # one should handle the returned OSError with more care to figure + # out whether this is still a mount + return False + + if s1.st_dev != s2.st_dev: + return True # path/.. on a different device as path + if s1.st_ino == s2.st_ino: + return True # path/.. is the same i-node as path, i.e. path=='/' + return False