Re: glibc: changing file_name_split()'s interface slightly to fix the "/" case

[Roland McGrath]

> You mean directory_name_split("/") should return (<root port>, "") ?

I do.  "This is the same as file_name_split, but ignores trailing slashes."
So directory_name_split ("////") should return (crdir, "") too.
End of story.

> This makes mkdir(), for instance, fail with EINVAL as well.

Well, what should it do?  I suppose it should fail with EEXIST instead.
That seems like a filesystem server problem, not a client-side problem.

> Should it be handled on a case-by-case basis in the individual POSIX
> calls (mkdir, rmdir, link, unlink, ...) ?

No, that's what the *_split calls are for.

For "/", all these mean an RPC made on the root directory port itself.
What could mkdir, rmdir, or unlink possibly mean for the root of a tree?
For link, we're talking about the target, i.e. "ln something /", so the
question is the same.


Thanks,
Roland