linux-kernel - Re: [PATCH, RFC] random: introduce getrandom(2) system call

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Date:	Thu, 17 Jul 2014 15:21:41 -0700 (PDT)
From:	David Lang <david@...g.hm>
To:	Andy Lutomirski <luto@...capital.net>
cc:	Mark Kettenis <mark.kettenis@...all.nl>,
	"Theodore Ts'o" <tytso@....edu>, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org, beck@...nbsd.org
Subject: Re: [PATCH, RFC] random: introduce getrandom(2) system call

On Thu, 17 Jul 2014, Andy Lutomirski wrote:

> Can we please have a mode in which getrandom(2) can neither block nor
> fail?  If that gets added, then this can replace things like AT_RANDOM.

If a call to get random data isn't allowed to either block or fail, what is it 
supposed to return if there isn't random data available?

David Lang
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