linux-kernel - Re: [PATCH v25 03/12] LRNG

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Date:   Tue, 19 Nov 2019 09:40:43 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Stephan Mueller <smueller@...onox.de>
Cc:     Andy Lutomirski <luto@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        "Alexander E. Patrakov" <patrakov@...il.com>,
        "Ahmed S. Darwish" <darwish.07@...il.com>,
        "Theodore Y. Ts'o" <tytso@....edu>, Willy Tarreau <w@....eu>,
        Matthew Garrett <mjg59@...f.ucam.org>,
        Vito Caputo <vcaputo@...garu.com>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Jan Kara <jack@...e.cz>, Ray Strode <rstrode@...hat.com>,
        William Jon McCann <mccann@....edu>,
        zhangjs <zachary@...shancloud.com>,
        Florian Weimer <fweimer@...hat.com>,
        Lennart Poettering <mzxreary@...inter.de>,
        Nicolai Stange <nstange@...e.de>,
        "Peter, Matthias" <matthias.peter@....bund.de>,
        Marcelo Henrique Cerri <marcelo.cerri@...onical.com>,
        Roman Drahtmueller <draht@...altsekun.de>,
        Neil Horman <nhorman@...hat.com>
Subject: Re: [PATCH v25 03/12] LRNG - /proc interface

On Tue, Nov 19, 2019 at 2:57 AM Stephan Mueller <smueller@...onox.de> wrote:
>
> Am Dienstag, 19. November 2019, 11:06:02 CET schrieb Andy Lutomirski:
>
> Hi Andy,
>
> > On Sun, Nov 17, 2019 at 4:16 AM Stephan Müller <smueller@...onox.de> wrote:
> > > Am Samstag, 16. November 2019, 17:39:40 CET schrieb Andy Lutomirski:
> > >
> > > Hi Andy,
> > >
> > > > > On Nov 16, 2019, at 1:40 AM, Stephan Müller <smueller@...onox.de>
> > > > > wrote:
> > > > >
> > > > > The LRNG /proc interface provides the same files as the legacy
> > > > > /dev/random. These files behave identically. Yet, all files are
> > > > > documented at [1].
> > > >
> > > > Why?
> > >
> > > I am not sure here: are you referring to the documentation? Or the one
> > > additional file?
> > >
> > > If it is the documentation, do you want me to add it to the patch
> > > description? I initially did not add it as these files were present and
> > > seemingly known what they provide. But I would add that documentation to
> > > the patch description if this is desired.
> >
> > Sorry, I should have been a lot more explicit.  Why do you want to add
> > a new interface to read the RNG?  What's wrong with the old one?
>
> There is nothing wrong at all. I actually want to be 100% API and ABI
> compliant with the existing random.c. Thus, the list of the sysctls are
> identical to the existing random.c with the same behavior (hence I skipped the
> documentation of these files).

Whoops, I misunderstood your commit message.  You said "The LRNG /proc
interface provides the same files as the legacy
/dev/random.".  I assumed that meant that you had a file in /proc that
worked like /dev/random.

So never mind.