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https://git.libcamera.org/libcamera/libcamera.git
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8e18f8d45f
The inode is useful to check if two file descriptors refer to the same file. Add a function to retrieve it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
51 lines
1 KiB
C++
51 lines
1 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* file_descriptor.h - File descriptor wrapper
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*/
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#ifndef __LIBCAMERA_FILE_DESCRIPTOR_H__
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#define __LIBCAMERA_FILE_DESCRIPTOR_H__
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#include <memory>
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#include <sys/types.h>
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namespace libcamera {
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class FileDescriptor final
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{
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public:
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explicit FileDescriptor(const int &fd = -1);
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explicit FileDescriptor(int &&fd);
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FileDescriptor(const FileDescriptor &other);
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FileDescriptor(FileDescriptor &&other);
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~FileDescriptor();
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FileDescriptor &operator=(const FileDescriptor &other);
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FileDescriptor &operator=(FileDescriptor &&other);
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bool isValid() const { return fd_ != nullptr; }
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int fd() const { return fd_ ? fd_->fd() : -1; }
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FileDescriptor dup() const;
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ino_t inode() const;
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private:
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class Descriptor
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{
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public:
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Descriptor(int fd, bool duplicate);
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~Descriptor();
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int fd() const { return fd_; }
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private:
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int fd_;
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};
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std::shared_ptr<Descriptor> fd_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_FILE_DESCRIPTOR_H__ */
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