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/*
* Copyright (c) 2000 - 2013 Samsung Electronics Co., Ltd All Rights Reserved
*
* Contact: Bumjin Im <bj.im@samsung.com>
*
* 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
*
* @file fstream-accessors.h
* @author Marek Smolinski (m.smolinski@samsung.com)
* @version 1.0
* @brief This file is the implementation file of fstream-accessors
*
*/
#ifndef CENT_KEY_FSTREAM_ACCESSORS_H
#define CENT_KEY_FSTREAM_ACCESSORS_H
namespace CKM {
/*
* Bypass lack of public member function to get file
* descriptor from fstream objects in std
* This feature is needed for flushing data from kernel space buffer to
* physical device [fsync(int fd) - syscall] on opened fstream object
*/
template<typename T>
class FstreamAccessors : T::__filebuf_type {
typedef FstreamAccessors<T> MyType;
public:
static int GetFd(T &strm)
{
return static_cast<MyType *>(strm.rdbuf())->_M_file.fd();
}
};
} // namespace CKM
#endif // CENT_KEY_FSTREAM_ACCESSORS_H
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