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Date: Wed, 5 Oct 2011 15:54:00 -0700
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From: Artem Belevich <art@freebsd.org>
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Cc: Michael Bushkov <bushman@freebsd.org>, hackers@freebsd.org,
	=?ISO-8859-1?Q?Trond_Endrest=F8l?= <Trond.Endrestol@fagskolen.gjovik.no>
Subject: Re: Does anyone use nscd?
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2011/10/5 Dag-Erling Sm=F8rgrav <des@des.no>:
> Michael Bushkov <bushman@freebsd.org> writes:
>> 2. Consequences of the aforementioned problem can probably be
>> corrected by using _setsockopt(..., SO_NOSIGPIPE) in
>> __open_cached_connection() in nscachedcli.c
>
> That sounds like a workaround rather than a fix...

Not necessarily. Using SO_NOSIGPIPE is a valid option when someone
wants to see read/write on a closed socket fail and return -1 with
errno=3DEPIPE.

Quick grep in libc shows that resolver code in
lib/libc/resolv/res_send.c also sets SO_NOSIGPIPE for exactly that
reason.

--Artem