Re: [PATCH 0/7][RFC] pid: changes to support audit

From: Richard Guy Briggs
Date: Fri Jan 24 2014 - 09:32:24 EST


On 14/01/24, Peter Zijlstra wrote:
> On Fri, Jan 24, 2014 at 01:14:47AM -0500, Richard Guy Briggs wrote:
> > On 14/01/23, Peter Zijlstra wrote:
> > > On Thu, Jan 23, 2014 at 02:32:33PM -0500, Richard Guy Briggs wrote:
> > > > These are a number of patches inspired by ebiederman's container work that were
> > > > included by me 2013-08-20 as the patchset:
> > > > RFC: steps to make audit pid namespace-safe
> > > >
> > > > They have been seperated out for the pid maintainer since there are no direct
> > > > dependencies from the audit pid namespace patchset with the exception of:
> > > > pid: get pid_t ppid of task in init_pid_ns
> > > >
> > > > Andrew, are you willing to adopt these?
> > > >
> > > > In particular, there is discussion around read-only task_struct::pid here:
> > > > https://lkml.org/lkml/2013/12/16/552
> > >
> > > I would have ordered them slightly different, but:
> >
> > Can you briefly explain how and why so I can understand for next time?
> > I originally had the ppid patch first...
>
> Ah, I would have introduced CONST_CAST() earlier, then used it in the
> make pid const and then avoided the conversion patch.

Ah, fair enough. It does serve to show how much ugliness can be avoided
though...

- RGB

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Richard Guy Briggs <rbriggs@xxxxxxxxxx>
Senior Software Engineer, Kernel Security, AMER ENG Base Operating Systems, Red Hat
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