From 93c43dc0dc81e05ff72986629b91f0dc4a91f7bc Mon Sep 17 00:00:00 2001 From: Paul Boca Date: Tue, 2 Aug 2016 17:45:41 +0000 Subject: [PATCH] python tests: Added fcntl module for Windows This is needed for lockf function used to lock the PID file on Windows. ioctl and fcntl functions are not implemented at this time because they are not used by any script. Signed-off-by: Paul-Daniel Boca Acked-by: Alin Gabriel Serdean Signed-off-by: Gurucharan Shetty --- python/automake.mk | 1 + python/ovs/fcntl_win.py | 42 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100644 python/ovs/fcntl_win.py diff --git a/python/automake.mk b/python/automake.mk index ecad39d35..1c8fa386d 100644 --- a/python/automake.mk +++ b/python/automake.mk @@ -11,6 +11,7 @@ ovstest_pyfiles = \ ovs_pyfiles = \ python/ovs/__init__.py \ python/ovs/daemon.py \ + python/ovs/fcntl_win.py \ python/ovs/db/__init__.py \ python/ovs/db/data.py \ python/ovs/db/error.py \ diff --git a/python/ovs/fcntl_win.py b/python/ovs/fcntl_win.py new file mode 100644 index 000000000..24e6c54be --- /dev/null +++ b/python/ovs/fcntl_win.py @@ -0,0 +1,42 @@ +# 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 win32con +import win32file +import pywintypes +import msvcrt + +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)