318 struct FileDescriptor {  struct
325   static FileDescriptor create(const path* p, error_code& ec, Args... args) {  in create()  argument
330       return FileDescriptor{p};  in create()
332     return FileDescriptor(p, fd);  in create()
336   static FileDescriptor create_with_status(const path* p, error_code& ec,  in create_with_status()  argument
338     FileDescriptor fd = create(p, ec, args...);  in create_with_status()
358   FileDescriptor(FileDescriptor&& other)  in FileDescriptor()  function
365   ~FileDescriptor() { close(); }  in ~FileDescriptor()  argument
367   FileDescriptor(FileDescriptor const&) = delete;
368   FileDescriptor& operator=(FileDescriptor const&) = delete;
371   explicit FileDescriptor(const path* p, int fd = -1) : name(*p), fd(fd) {}  in FileDescriptor()  argument
443 bool posix_ftruncate(const FileDescriptor& fd, off_t to_size, error_code& ec) {  in posix_ftruncate()
452 bool posix_fchmod(const FileDescriptor& fd, const StatT& st, error_code& ec) {  in posix_fchmod()
465 file_status FileDescriptor::refresh_status(error_code& ec) {  in refresh_status()
643 bool copy_file_impl_sendfile(FileDescriptor& read_fd, FileDescriptor& write_fd,  in copy_file_impl_sendfile()
661 bool copy_file_impl_copyfile(FileDescriptor& read_fd, FileDescriptor& write_fd,
686 __attribute__((unused)) bool copy_file_impl_default(FileDescriptor& read_fd,  in copy_file_impl_default()
687                                                     FileDescriptor& write_fd,  in copy_file_impl_default()
720 bool copy_file_impl(FileDescriptor& from, FileDescriptor& to, error_code& ec) {  in copy_file_impl()
735   using detail::FileDescriptor;  in __copy_file()
739   FileDescriptor from_fd =  in __copy_file()
740       FileDescriptor::create_with_status(&from, m_ec, O_RDONLY | O_NONBLOCK);  in __copy_file()
795   FileDescriptor to_fd = FileDescriptor::create_with_status(  in __copy_file()