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# Copyright (C) 2009-2011 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Module stuff."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'makedirs',
'umask',
]
import os
import errno
class umask:
"""Manage the umask for the with statement."""
def __init__(self, umask):
self._umask = umask
self._old_umask = None
def __enter__(self):
assert self._old_umask is None, 'Unexpected existing umask'
self._old_umask = os.umask(self._umask)
def __exit__(self, *exc_info):
assert self._old_umask is not None, 'No previous umask'
os.umask(self._old_umask)
# Do not suppress exceptions.
return False
def makedirs(path, mode=02775):
"""Create a directory hierarchy, ensuring permissions.
Other than just calling os.makedirs(), this ensures that the umask is
reset so that the makedirs mode will be honored.
:param path: The directory path to create.
:type path: string
:param mode: The numeric permission mode to use.
:type mode: int
"""
try:
with umask(0):
os.makedirs(path, mode)
except OSError as error:
# Ignore the exceptions if the directory already exists.
if error.errno <> errno.EEXIST:
raise
# Some systems such as FreeBSD ignore mkdir's mode, so walk the just
# created directories and try to set the mode, ignoring any OSErrors that
# occur here.
for dirpath, dirnames, filenames in os.walk(path):
try:
os.chmod(dirpath, mode)
except OSError:
pass
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