linux-kernel - Re: [PATCH v17 06/12] bpf: Add bpf_lookup_*_key() and bpf_key

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Date:   Fri, 9 Sep 2022 17:05:25 +0100
From:   Song Liu <song@...nel.org>
To:     Roberto Sassu <roberto.sassu@...weicloud.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Mykola Lysenko <mykolal@...com>,
        David Howells <dhowells@...hat.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, paul@...l-moore.com,
        jmorris@...ei.org, serge@...lyn.com, Shuah Khan <shuah@...nel.org>,
        bpf <bpf@...r.kernel.org>, keyrings@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>,
        Daniel Müller <deso@...teo.net>,
        Kumar Kartikeya Dwivedi <memxor@...il.com>,
        Roberto Sassu <roberto.sassu@...wei.com>
Subject: Re: [PATCH v17 06/12] bpf: Add bpf_lookup_*_key() and bpf_key_put() kfuncs

On Fri, Sep 9, 2022 at 1:09 PM Roberto Sassu
<roberto.sassu@...weicloud.com> wrote:
>
> From: Roberto Sassu <roberto.sassu@...wei.com>
>
> Add the bpf_lookup_user_key(), bpf_lookup_system_key() and bpf_key_put()
> kfuncs, to respectively search a key with a given key handle serial number
> and flags, obtain a key from a pre-determined ID defined in
> include/linux/verification.h, and cleanup.
>
> Introduce system_keyring_id_check() to validate the keyring ID parameter of
> bpf_lookup_system_key().
>
> Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
> Acked-by: Kumar Kartikeya Dwivedi <memxor@...il.com>

Acked-by: Song Liu <song@...nel.org>

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