netdev - Re: [PATCH] landlock: Allow filesystem layout changes for domains without such rule type

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Message-ID: <b53c6fe8-0c7a-ad99-5d43-49889d72c398@huawei.com>
Date:   Fri, 2 Dec 2022 05:51:16 +0300
From:   "Konstantin Meskhidze (A)" <konstantin.meskhidze@...wei.com>
To:     Mickaël Salaün <mic@...ikod.net>
CC:     <artem.kuzin@...wei.com>, <gnoack3000@...il.com>,
        <willemdebruijn.kernel@...il.com>,
        <linux-security-module@...r.kernel.org>, <netdev@...r.kernel.org>,
        <netfilter-devel@...r.kernel.org>
Subject: Re: [PATCH] landlock: Allow filesystem layout changes for domains
 without such rule type



11/28/2022 11:25 PM, Mickaël Salaün пишет:
> 
> On 28/11/2022 04:02, Konstantin Meskhidze (A) wrote:
>> 
>> 
>> 11/17/2022 9:55 PM, Mickaël Salaün пишет:
>>> Allow mount point and root directory changes when there is no filesystem
>>> rule tied to the current Landlock domain.  This doesn't change anything
>>> for now because a domain must have at least a (filesystem) rule, but
>>> this will change when other rule types will come.  For instance, a
>>> domain only restricting the network should have no impact on filesystem
>>> restrictions.
>>>
>>> Add a new get_current_fs_domain() helper to quickly check filesystem
>>> rule existence for all filesystem LSM hooks.
>> 
>>     Ok. I got it.
>>     Do I need also to add a new network helper:
>>     like landlock_get_raw_net_access_mask?
> 
> A get_raw helper would not be useful if there is not network access
> initially denied (like for FS_REFER).

  Ok.
> .