linux-kernel - Re: [RFC v3 05/22] bpf,landlock: Add eBPF program subtype and is_valid

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Message-ID: <20161019150117.GB22003@pox.localdomain>
Date:   Wed, 19 Oct 2016 17:01:17 +0200
From:   Thomas Graf <tgraf@...g.ch>
To:     Mickaël Salaün <mic@...ikod.net>
Cc:     linux-kernel@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Arnd Bergmann <arnd@...db.de>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Daniel Mack <daniel@...que.org>,
        David Drysdale <drysdale@...gle.com>,
        "David S . Miller" <davem@...emloft.net>,
        Elena Reshetova <elena.reshetova@...el.com>,
        "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>,
        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 v3 05/22] bpf,landlock: Add eBPF program subtype and
 is_valid_subtype() verifier

On 09/14/16 at 09:23am, Mickaël Salaün wrote:
> @@ -155,6 +163,7 @@ union bpf_attr {
>  		__u32		log_size;	/* size of user buffer */
>  		__aligned_u64	log_buf;	/* user supplied buffer */
>  		__u32		kern_version;	/* checked when prog_type=kprobe */
> +		union bpf_prog_subtype prog_subtype;	/* checked when prog_type=landlock */

The comment seems bogus, this is not landlock specific.