[PATCH v2 4/9] linux: Use getdents64 on non-LFS readdir

[Florian Weimer]

* Adhemerval Zanella via Libc-alpha:

> It reserves some space on the allocated internal buffer to be
> used as a the returned dirent struct.  The kernel obtained dirent64
> struct are copied to the temporary buffer on each readdir call.
>
> The overflow test is moved once the dirent64 entry is copied
> to the temporary buffer, and a subsequent readdir will obtain the
> next entry.  The idea is an overflow fails to return the entry on
> readdir, but a next readdir might still obtain the next entry.
> (for filesystem that does not have the concept of sequential d_off,
> such as ext4).

Can you make the translation buffer a separate allocation?  Then you can
resize it to accommodate long names.

Thanks,
Florian
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