linux-kernel - Re: [RFC v4 00/18] Landlock LSM: Unprivileged sandboxing

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Date:   Wed, 26 Oct 2016 18:56:45 +0200
From:   Mickaël Salaün <mic@...ikod.net>
To:     Jann Horn <jann@...jh.net>
Cc:     linux-kernel@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Daniel Mack <daniel@...que.org>,
        David Drysdale <drysdale@...gle.com>,
        "David S . Miller" <davem@...emloft.net>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        James Morris <james.l.morris@...cle.com>,
        Kees Cook <keescook@...omium.org>,
        Paul Moore <pmoore@...hat.com>,
        Sargun Dhillon <sargun@...gun.me>,
        "Serge E . Hallyn" <serge@...lyn.com>, Tejun Heo <tj@...nel.org>,
        Thomas Graf <tgraf@...g.ch>, Will Drewry <wad@...omium.org>,
        kernel-hardening@...ts.openwall.com, linux-api@...r.kernel.org,
        linux-security-module@...r.kernel.org, netdev@...r.kernel.org,
        cgroups@...r.kernel.org
Subject: Re: [RFC v4 00/18] Landlock LSM: Unprivileged sandboxing


On 26/10/2016 16:52, Jann Horn wrote:
> On Wed, Oct 26, 2016 at 08:56:36AM +0200, Mickaël Salaün wrote:
>> The loaded Landlock eBPF programs can be triggered by a seccomp filter
>> returning RET_LANDLOCK. In addition, a cookie (16-bit value) can be passed from
>> a seccomp filter to eBPF programs. This allow flexible security policies
>> between seccomp and Landlock.
> 
> Is this still up to date, or was that removed in v3?
> 

I forgot to remove this part. In this v4 series, as describe in the
(small) patch 11/18, a Landlock rule cannot be triggered by a seccomp
filter. So there is no more RET_LANDLOCK nor cookie.



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