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Date: Wed, 13 Apr 2005 12:53:12 -0700
From: Alfred Perlstein <alfred@freebsd.org>
To: "Matthew N. Dodd" <mdodd@FreeBSD.ORG>
Message-ID: <20050413195312.GD60345@elvis.mu.org>
References: <200504130001.j3D01kuD081602@repoman.freebsd.org>
	<20050413184246.19212b84.antoine.brodin@laposte.net>
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cc: Antoine Brodin <antoine.brodin@laposte.net>
Subject: Re: cvs commit: src/share/man/man4 unix.4 src/sys/sys socket.h un.h
	unpcb.h src/sys/kern uipc_usrreq.c
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* Matthew N. Dodd <mdodd@FreeBSD.ORG> [050413 10:04] wrote:
> On Wed, 13 Apr 2005, Antoine Brodin wrote:
> >I'm not sure it's safe to sooptcopyout/sooptcopyin while holding the
> >unp mutex in uipc_ctloutput.  It can fault.
> 
> I was concerned about this but saw that other code holds locks across 
> sooptcopy*() calls.
> 
> If there is a deadlock problem it may be time to add a per unpcb lock.

This should be tripping an assertion, copyout/copyin is not ok while
holding a mutex.  Does anyone want to add the logic to sooptcopy*?

-- 
- Alfred Perlstein
- Research Engineering Development Inc.
- email: bright@mu.org cell: 408-480-4684