netdev - Re: [PATCH bpf-next] bpf, capabilities: introduce CAP

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Message-ID: <20190829134722.528ecce1@gandalf.local.home>
Date:   Thu, 29 Aug 2019 13:47:22 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        James Morris <jmorris@...ei.org>, Jann Horn <jannh@...gle.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, kernel-team <kernel-team@...com>,
        Linux API <linux-api@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf, capabilities: introduce CAP_BPF

On Thu, 29 Aug 2019 10:19:24 -0700
Alexei Starovoitov <alexei.starovoitov@...il.com> wrote:

> On Thu, Aug 29, 2019 at 09:34:34AM -0400, Steven Rostedt wrote:
> > 
> > As the above seems to favor the idea of CAP_TRACING allowing write
> > access to tracefs, should we have a CAP_TRACING_RO for just read access
> > and limited perf abilities?  
> 
> read only vs writeable is an attribute of the file system.
> Bringing such things into caps seem wrong to me.

So using groups then? I'm fine with that.

-- Steve