2 # Copyright 2015 ClusterHQ
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
18 The package that contains a module per each C library that
19 `libzfs_core` uses. The modules expose CFFI objects required
20 to make calls to functions in the libraries.
22 from __future__ import absolute_import, division, print_function
31 class LazyLibrary(object):
33 def __init__(self, ffi, libname):
35 self._libname = libname
37 self._lock = threading.Lock()
39 def __getattr__(self, name):
43 self._lib = self._ffi.dlopen(self._libname)
45 return getattr(self._lib, name)
47 MODULES = ["libnvpair", "libzfs_core"]
50 for module_name in MODULES:
51 module = importlib.import_module("." + module_name, __name__)
53 lib = LazyLibrary(ffi, module.LIBRARY)
54 setattr(module, "ffi", ffi)
55 setattr(module, "lib", lib)
60 # vim: softtabstop=4 tabstop=4 expandtab shiftwidth=4