mirror of
https://github.com/openvswitch/ovs
synced 2025-10-09 13:49:05 +00:00
6c7050b59c
https://review.openstack.org/#/c/432906/ flake8-import-order adds 3 new flake8 warnings: I100: Your import statements are in the wrong order. I101: The names in your from import are in the wrong order. I201: Missing newline between sections or imports. Signed-off-by: Ben Pfaff <blp@ovn.org>
47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
# Copyright (c) 2016 Cloudbase Solutions Srl
|
|
#
|
|
# 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.
|
|
|
|
import errno
|
|
|
|
import msvcrt
|
|
|
|
import pywintypes
|
|
|
|
import win32con
|
|
|
|
import win32file
|
|
|
|
LOCK_EX = win32con.LOCKFILE_EXCLUSIVE_LOCK
|
|
LOCK_SH = 0 # the default
|
|
LOCK_NB = win32con.LOCKFILE_FAIL_IMMEDIATELY
|
|
LOCK_UN = 0x80000000 # unlock - non-standard
|
|
|
|
|
|
def lockf(fd, flags, length=0xFFFF0000, start=0, whence=0):
|
|
overlapped = pywintypes.OVERLAPPED()
|
|
hfile = msvcrt.get_osfhandle(fd.fileno())
|
|
if LOCK_UN & flags:
|
|
ret = win32file.UnlockFileEx(hfile, 0, start, length, overlapped)
|
|
else:
|
|
try:
|
|
ret = win32file.LockFileEx(hfile, flags, start, length, overlapped)
|
|
except:
|
|
raise IOError(errno.EAGAIN, "", "")
|
|
|
|
return ret
|
|
|
|
|
|
def flock(fd, flags):
|
|
lockf(fd, flags, 0xFFFF0000, 0, 0)
|