linux-kernel - Re: [PATCH v2 1/2] selinux: add tracepoint on denials

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Message-ID: <20200814145645.1ce518dd@oasis.local.home>
Date:   Fri, 14 Aug 2020 14:56:45 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     peter enderborg <peter.enderborg@...y.com>
Cc:     Stephen Smalley <stephen.smalley.work@...il.com>,
        Thiébaud Weksteen 
        <tweek@...gle.com>, Paul Moore <paul@...l-moore.com>,
        Nick Kralevich <nnk@...gle.com>,
        Joel Fernandes <joelaf@...gle.com>,
        Eric Paris <eparis@...isplace.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        SElinux list <selinux@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] selinux: add tracepoint on denials

On Fri, 14 Aug 2020 20:50:47 +0200
peter enderborg <peter.enderborg@...y.com> wrote:

> On 8/14/20 8:30 PM, Steven Rostedt wrote:
> > On Fri, 14 Aug 2020 20:06:34 +0200
> > peter enderborg <peter.enderborg@...y.com> wrote:
> >  
> >> Im find with that, but then you  can not do filtering? I would be
> >> pretty neat with a filter saying tclass=file permission=write.
> >>  
> > Well, if the mapping is stable, you could do:
> >
> > 	(tclass == 6) && (audited & 0x4)  
> 
> It does not happen to exist a hook for translate strings to numeric values when inserting filter?
> 

How would you imagine such a hook existing?

Something that would be specific to each trace event class, where you
can register at boot up a mapping of names to values? Or a function
that would translate it?

-- Steve