_haiku_build_fs_open_attr_dir
# define fs_open_attr_dir _haiku_build_fs_open_attr_dir
dir = _haiku_build_fs_open_attr_dir(realPath.c_str());
return (addr_t)_haiku_build_fs_open_attr_dir(path);
void *_haiku_build_fs_open_attr_dir(const char *path);