[PATCH] shm_open/unlink: fix errno if namelen >= NAME_MAX

[Florian Weimer]

* Adhemerval Zanella:

> Florian has pointed me out a better solution would be use
> use his fix [1] for BZ#25383 [2] which refactor the POSIX sem/shm
> code to use a static buffer instead.
>
> Then the ENAMETOOLONG could be returned by '__shm_get_name'
> instead.
>
> Florian, do you plan to send your patch for review?

I'm working on the change you requested (eliminate the new struct
type).  No ETA yet.  Hopefully still this month.

Thanks,
Florian
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