linux-kernel - Re: [PATCH bpf-next v6 1/8] bpf: Introduce BPF_PROG_TYPE

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Date:   Wed, 25 Mar 2020 18:51:50 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     KP Singh <kpsingh@...omium.org>
Cc:     open list <linux-kernel@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, linux-security-module@...r.kernel.org,
        Brendan Jackman <jackmanb@...gle.com>,
        Florent Revest <revest@...gle.com>,
        Thomas Garnier <thgarnie@...gle.com>,
        Yonghong Song <yhs@...com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        James Morris <jmorris@...ei.org>,
        Kees Cook <keescook@...omium.org>,
        Paul Turner <pjt@...gle.com>, Jann Horn <jannh@...gle.com>,
        Florent Revest <revest@...omium.org>,
        Brendan Jackman <jackmanb@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH bpf-next v6 1/8] bpf: Introduce BPF_PROG_TYPE_LSM

On Wed, Mar 25, 2020 at 8:27 AM KP Singh <kpsingh@...omium.org> wrote:
>
> From: KP Singh <kpsingh@...gle.com>
>
> Introduce types and configs for bpf programs that can be attached to
> LSM hooks. The programs can be enabled by the config option
> CONFIG_BPF_LSM.
>
> Signed-off-by: KP Singh <kpsingh@...gle.com>
> Reviewed-by: Brendan Jackman <jackmanb@...gle.com>
> Reviewed-by: Florent Revest <revest@...gle.com>
> Reviewed-by: Thomas Garnier <thgarnie@...gle.com>
> Acked-by: Yonghong Song <yhs@...com>
> ---

Looks good to me, so please add by ack, but I think it would be easier
to review if this was combined with patch #4, which adds verifier
support and kernel/bpf/syscall.c support. On its own this patch just
adds random unused stuff.

Acked-by: Andrii Nakryiko <andriin@...com>

>  MAINTAINERS                    |  1 +
>  include/linux/bpf.h            |  3 +++
>  include/linux/bpf_types.h      |  4 ++++
>  include/uapi/linux/bpf.h       |  2 ++
>  init/Kconfig                   | 12 ++++++++++++
>  kernel/bpf/Makefile            |  1 +
>  kernel/bpf/bpf_lsm.c           | 17 +++++++++++++++++
>  kernel/trace/bpf_trace.c       | 12 ++++++------
>  tools/include/uapi/linux/bpf.h |  2 ++
>  tools/lib/bpf/libbpf_probes.c  |  1 +
>  10 files changed, 49 insertions(+), 6 deletions(-)
>  create mode 100644 kernel/bpf/bpf_lsm.c
>

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