If readdir returns NULL and errno is 0 (sometimes called EOK or ENOERROR), there are no more directory entries.

如果readdir返回NULL，并且errno为0(有时也称为EOK或ENOERROR)，则表示没有其他的目录条目。

youdao

I've programmed on platforms that had E_OK, EOK, and ENOERROR in their errno. h, and I've seen loads of code that includes something like Listing 4.

我已在各种平台(它们的errno . h中具有e_ok、EOK和ENOERROR)上进行编程，我发现许多代码都包括类似清单4的内容。

youdao