From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Viro <aviro@redhat.com>
Subject: Re: [PATCH] Reporting file descriptors created by pipe and
	socketpair
Date: Tue, 12 Sep 2006 15:12:25 -0400
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To: "John D. Ramsdell" <ramsdell@mitre.org>
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On Tue, Sep 12, 2006 at 02:25:50PM -0400, John D. Ramsdell wrote:
> Alexander Viro <aviro@redhat.com> writes:
> 
> > c) just how do you propose to do "tracking file descriptors"?
> 
> We aren't proposing to track file descriptors.  We already have code
> that does that

Indeed?  And how, pray tell, do you handle e.g. processes A and B sending
SCM_RIGHTS datagrams to C at the same moment?  With data part containing
the indication which process had sent them, so C can handle them just
fine and do that in different ways depending on the origin of datagram.
Note that looking at the timestamps will not help you at all - you can
get
	A enters sendmsg(2)
	B enters sendmsg(2)
	B puts datagram into queue
	A puts datagram into queue
	A leaves sendmsg(2)
	B leaves sendmsg(2)
quite easily.