linux-kernel - Re: [PATCH 07/12] AppArmor: userspace interfaces

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Message-ID: <87pr7qjpn8.fsf@basil.nowhere.org>
Date:	Tue, 10 Nov 2009 17:44:27 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	John Johansen <john.johansen@...onical.com>,
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 07/12] AppArmor: userspace interfaces

Pekka Enberg <penberg@...helsinki.fi> writes:

> On Tue, Nov 10, 2009 at 6:13 PM, John Johansen
> <john.johansen@...onical.com> wrote:
>> The current apparmorfs interface is compatible with previous versions
>> of AppArmor.  The plans are to deprecate it (hence the config option
>> APPARMOR_COMPAT_24) and replace it with a more sysfs style single
>> entry per file interface.
>
> We don't usually merge compatibility code to handle ABIs that were
> developed out-of-tree. Why should we treat AppArmor differently?

I would say that always depends on the deployed base of the old ABI.
If there's a lot of users who would get broken I think there's a
good case for merging compat code (I don't know if that is or
isn't the case here). 

A widely used distribution release with the old user land would
probably count.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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