Function directory_status

src/system.h:318–344

    DS_NONEMPTY = 0,
};
static inline int
directory_status (int fd_cwd, char const *dir)
{
  DIR *dirp;
  bool no_direntries;
  int saved_errno;
  int fd = openat (fd_cwd, dir,
                   (O_RDONLY | O_DIRECTORY
                    | O_NOCTTY | O_NOFOLLOW | O_NONBLOCK));

  if (fd < 0)
    return errno;

  dirp = fdopendir (fd);
  if (dirp == NULL)
    {
      saved_errno = errno;
      close (fd);
      return saved_errno;
    }

  errno = 0;
  no_direntries = !readdir_ignoring_dot_and_dotdot (dirp);
  saved_errno = errno;
  closedir (dirp);
  return no_direntries && saved_errno == 0 ? DS_EMPTY : saved_errno;
}

/* Factor out some of the common --help and --version processing code.  */