blob: 7db40870f15e82046c9cced26199b252b678f8b0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/*
* 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 */
|
