/*
|
* Copyright (C) 2017 The Android Open Source Project
|
*
|
* 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.
|
*/
|
|
#ifndef NETUTILS_FD_H
|
#define NETUTILS_FD_H
|
|
#include <ostream>
|
|
#include "netdutils/Status.h"
|
|
namespace android {
|
namespace netdutils {
|
|
// Strongly typed wrapper for file descriptors with value semantics.
|
// This class should typically hold unowned file descriptors.
|
class Fd {
|
public:
|
constexpr Fd() = default;
|
|
constexpr Fd(int fd) : mFd(fd) {}
|
|
int get() const { return mFd; }
|
|
bool operator==(const Fd& other) const { return get() == other.get(); }
|
bool operator!=(const Fd& other) const { return get() != other.get(); }
|
|
private:
|
int mFd = -1;
|
};
|
|
// Return true if fd appears valid (non-negative)
|
inline bool isWellFormed(const Fd fd) {
|
return fd.get() >= 0;
|
}
|
|
std::ostream& operator<<(std::ostream& os, const Fd& fd);
|
|
} // namespace netdutils
|
} // namespace android
|
|
#endif /* NETUTILS_FD_H */
|
