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)