Re: [artdodge@cs.bu.edu] libc/1220: The code in resolv/res_send.cis not thread-safe

["Adam D. Bradley" <artdodge@cs.bu.edu>]

On 24 Jul 1999, Ulrich Drepper wrote:

> Mark Kettenis <kettenis@wins.uva.nl> writes:
> 
> > The resolver is indeed not thread safe.  This is a known issue, and
> > not easy to solve.
> 
> I think the existing res_send code can be made thread-safe.

I can see a straightforward hack that would do it.  Basically, keep all
socket state (s, connected, vc) within the scope of res_send(), and be
sure to close it/clean it up at all exit points.

Alternately, I'm wondering if anyone can trade notes with me about what
issues would be involved plugging in the BIND 8.2.1 code?  I built its
libbind_r.a and used that instead of the glibc2.0.6 libresolv.so, and it
seems to be more-or-less working out-of-the-box...

Thanks,
Adam
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