netdev - Re: bind and O

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Message-ID: <20070922173556.GA26346@devserv.devel.redhat.com>
Date:	Sat, 22 Sep 2007 13:35:56 -0400
From:	Alan Cox <alan@...hat.com>
To:	Evgeniy Polyakov <johnpol@....mipt.ru>
Cc:	Ulrich Drepper <drepper@...hat.com>,
	netdev <netdev@...r.kernel.org>, Alan Cox <alan@...hat.com>
Subject: Re: bind and O_NONBLOCK

On Sat, Sep 22, 2007 at 08:14:15PM +0400, Evgeniy Polyakov wrote:
> of operations. There are four ways where bind can fail:
> 
> 1. unsufficient rights - nothing can help here
> 2. there is no memory - async binding can not help here too, since it
> 	some memory just has to be allocated to save async request
> 	somewhere.
> 3. socket is locked.
> 4. addres is being bound is in use.

For most protocols yes - but not all. For things like IP specifying O_NDELAY
is meaningless on a bind it will always complete on the spot as you say

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