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Message-ID: <11e03e8d-7711-330d-e0d4-808ef9acec3a@igalia.com>
Date: Sat, 8 Oct 2022 11:14:11 -0300
From: "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To: Kees Cook <keescook@...omium.org>, Ard Biesheuvel <ardb@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
kernel-dev@...lia.com, kernel@...ccoli.net, anton@...msg.org,
ccross@...roid.com, tony.luck@...el.com
Subject: Re: [PATCH 5/8] pstore: Fix long-term implicit conversions in the
compression routines
On 07/10/2022 16:37, Kees Cook wrote:
> On Fri, Oct 07, 2022 at 10:47:01AM +0200, Ard Biesheuvel wrote:
>> [...]
>> Isn't this the stuff we want to move into the crypto API?
>
> It is, yes. Guilherme, for background:
> https://lore.kernel.org/linux-crypto/20180802215118.17752-1-keescook@chromium.org/
>
Thanks a bunch Kees / Ard for pointing me that!
But I'm confused with regards to the state of this conversion: the
patches seem to be quite mature and work fine, but at the same time,
they focus in what Herbert consider a deprecated/old API, so they were
never merged right?
The proposal from Ard (to move to crypto scomp/acomp) allow to rework
the zbufsize worst case thing and wire it on such new API, correct? Do
you intend to do that Kees?
At the same time, I feel it is still valid to avoid these bunch of
implicit conversions on pstore, as this patch proposes - what do you all
think?
I could rework this one on top of Ard's acomp migration while we don't
have an official zbufsize API for on crypto scomp - and once we have,
it'd be just a matter of removing the zbufsize functions of pstore and
make use of the new API, which shouldn't be affected by this implicit
conversion fix.
Cheers,
Guilherme
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