OpenStack Block Storage (Cinder)
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# Copyright 2018 Red Hat, Inc
# Copyright 2017 Rackspace Australia
# Copyright 2018 Michael Still and Aptira
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Helpers for path related routines.
"""
import os
from cinder import exception
import cinder.privsep
@cinder.privsep.sys_admin_pctxt.entrypoint
def readfile(path):
if not os.path.exists(path):
raise exception.FileNotFound(file_path=path)
with open(path, 'r') as f:
return f.read()
@cinder.privsep.sys_admin_pctxt.entrypoint
def removefile(path):
if not os.path.exists(path):
raise exception.FileNotFound(file_path=path)
os.unlink(path)
@cinder.privsep.sys_admin_pctxt.entrypoint
def touch(path):
if os.path.exists(path):
os.utime(path, None)
else:
open(path, 'a').close()
@cinder.privsep.sys_admin_pctxt.entrypoint
def symlink(src, dest):
if not os.path.exists(src):
raise exception.FileNotFound(file_path=src)
os.symlink(src, dest)