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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	Andrii Nakryiko <andriin@fb.com>, Yonghong Song <yhs@fb.com>,
	Martin KaFai Lau <kafai@fb.com>,
	Jakub Kicinski <jakub.kicinski@netronome.com>,
	Steve Grubb <sgrubb@redhat.com>, David Miller <davem@redhat.com>,
	Paul Moore <paul@paul-moore.com>, Eric Paris <eparis@redhat.com>,
	Jiri Benc <jbenc@redhat.com>
Subject: Re: [RFC] bpf: emit audit messages upon successful prog load and unload
Date: Wed, 20 Nov 2019 13:14:40 -0800
Message-ID: <20191120211438.x5dn2ns755bv3q63@ast-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <20191120143810.8852-1-jolsa@kernel.org>

On Wed, Nov 20, 2019 at 03:38:10PM +0100, Jiri Olsa wrote:
> 
> The only info really needed from BPF side is the globally unique
> prog ID where then audit user space tooling can query / dump all
> info needed about the specific BPF program right upon load event
> and enrich the record, thus these changes needed here can be kept
> small and non-intrusive to the core.

...

> +static void bpf_audit_prog(const struct bpf_prog *prog, enum bpf_event event)
> +{
> +	bool has_task_context = event == BPF_EVENT_LOAD;
> +	struct audit_buffer *ab;
> +
> +	if (audit_enabled == AUDIT_OFF)
> +		return;
> +	ab = audit_log_start(audit_context(), GFP_ATOMIC, AUDIT_BPF);
> +	if (unlikely(!ab))
> +		return;
> +	if (has_task_context)
> +		audit_log_task(ab);
> +	audit_log_format(ab, "%sprog-id=%u event=%s",
> +			 has_task_context ? " " : "",
> +			 prog->aux->id, bpf_event_audit_str[event]);
> +	audit_log_end(ab);

Single prog ID is enough for perf_event based framework to track everything
about the programs and should be enough for audit.
Could you please resend as proper patch with explicit 'From:' ?
Since I'm not sure what is the proper authorship of the patch.. Daniel's or yours.


  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-20 14:38 Jiri Olsa
2019-11-20 21:14 ` Alexei Starovoitov [this message]
2019-11-20 21:30   ` Jiri Olsa
2019-11-28  9:16 [RFC] bpf: Emit " Jiri Olsa
2019-11-28  9:18 ` Jiri Olsa
2019-12-02 23:00 ` Paul Moore
2019-12-03  4:57   ` Steve Grubb
2019-12-03  8:46     ` Jiri Olsa
2019-12-03  9:38   ` Jiri Olsa
2019-12-04  2:53     ` Paul Moore
2019-12-04 14:08       ` Jiri Olsa
2019-12-04 14:38         ` Paul Moore
2019-12-04 15:26           ` Jiri Olsa
2019-12-04 14:02   ` Jiri Olsa

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