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Date:   Thu, 15 Oct 2020 07:46:21 +1100 (AEDT)
From:   James Morris <jmorris@namei.org>
To:     =?ISO-8859-15?Q?Micka=EBl_Sala=FCn?= <mic@digikod.net>
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        =?ISO-8859-15?Q?Micka=EBl_Sala=FCn?= <mic@linux.microsoft.com>
Subject: Re: [PATCH v21 07/12] landlock: Support filesystem access-control
In-Reply-To: <b311a2a6-5290-5c50-3a9c-4d5b54b6b406@digikod.net>
Message-ID: <alpine.LRH.2.21.2010150746120.4000@namei.org>
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On Wed, 14 Oct 2020, Mickaël Salaün wrote:

> 
> On 14/10/2020 20:52, Mickaël Salaün wrote:
> > 
> > On 14/10/2020 20:07, James Morris wrote:
> >> On Thu, 8 Oct 2020, Mickaël Salaün wrote:
> >>
> >>> +config ARCH_EPHEMERAL_STATES
> >>> +	def_bool n
> >>> +	help
> >>> +	  An arch should select this symbol if it does not keep an internal kernel
> >>> +	  state for kernel objects such as inodes, but instead relies on something
> >>> +	  else (e.g. the host kernel for an UML kernel).
> >>> +
> >>
> >> This is used to disable Landlock for UML, correct?
> > 
> > Yes
> > 
> >> I wonder if it could be 
> >> more specific: "ephemeral states" is a very broad term.
> >>
> >> How about something like ARCH_OWN_INODES ?
> > 
> > Sounds good. We may need add new ones (e.g. for network socket, UID,
> > etc.) in the future though.
> > 
> 
> Because UML is the exception here, it would be more convenient to keep
> the inverted semantic. What about ARCH_NO_OWN_INODES or
> ARCH_EPHEMERAL_INODES?

The latter seems good.

-- 
James Morris
<jmorris@namei.org>

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