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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* file_descriptor.h - File descriptor wrapper
*/
#pragma once
#include <memory>
namespace libcamera {
class UniqueFD;
class FileDescriptor final
{
public:
explicit FileDescriptor(const int &fd = -1);
explicit FileDescriptor(int &&fd);
explicit FileDescriptor(UniqueFD fd);
FileDescriptor(const FileDescriptor &other);
FileDescriptor(FileDescriptor &&other);
~FileDescriptor();
FileDescriptor &operator=(const FileDescriptor &other);
FileDescriptor &operator=(FileDescriptor &&other);
bool isValid() const { return fd_ != nullptr; }
int fd() const { return fd_ ? fd_->fd() : -1; }
UniqueFD dup() const;
private:
class Descriptor
{
public:
Descriptor(int fd, bool duplicate);
~Descriptor();
int fd() const { return fd_; }
private:
int fd_;
};
std::shared_ptr<Descriptor> fd_;
};
} /* namespace libcamera */
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