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Date:	Wed, 7 Oct 2015 19:29:16 -0700
From:	Alexei Starovoitov <>
To:	"David S. Miller" <>
Cc:	Andy Lutomirski <>,
	Ingo Molnar <>,
	Hannes Frederic Sowa <>,
	Eric Dumazet <>,
	Daniel Borkmann <>,
	Kees Cook <>,,,
Subject: Re: [PATCH net-next 1/2] bpf: enable non-root eBPF programs

On 10/5/15 1:48 PM, Alexei Starovoitov wrote:
> Unprivileged socket filter bpf programs have access to the
> following helper functions:
> - map lookup/update/delete (but they cannot store kernel pointers into them)
> - get_random (it's already exposed to unprivileged user space)
> - get_smp_processor_id
> - tail_call into another socket filter program
> - ktime_get_ns
> - bpf_trace_printk (for debugging)

while reviewing everything for Nth time realized that
bpf_trace_printk is useless for unprivileged users, since
trace_pipe is root only.
So going to drop it in V2.

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