linux-kernel - Re: [PATCH] capabilities: add bounding set to /proc/self/status

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Date:	Mon, 5 May 2008 10:22:06 +0200
From:	"Michael Kerrisk" <mtk.manpages@...glemail.com>
To:	"Andrew Morgan" <morgan@...nel.org>
Cc:	"Chris Wright" <chrisw@...s-sol.org>,
	"Serge E. Hallyn" <serue@...ibm.com>,
	lkml <linux-kernel@...r.kernel.org>,
	linux-security-module@...r.kernel.org,
	"Michael Kerrisk" <mtk.manpages@...il.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] capabilities: add bounding set to /proc/self/status

Andrew (Morgan),

It looks like this didn't make it into rc1, even though it was sent
within the merge window -- perhaps Linus or Andrew (Morton) needed to
be explicitly CCed?

Cheers,

Michael

On Fri, May 2, 2008 at 2:38 AM, Chris Wright <chrisw@...s-sol.org> wrote:
> * Serge E. Hallyn (serue@...ibm.com) wrote:
> > There is currently no way to query the bounding set of another
> > task.  As there appears to be no security reason not to, and
> > as Michael Kerrisk points out the following valid reasons to do
> > so exist:
> >
> > * consistency (I can see all of the other per-thread/process sets in
> > /proc/.../status)
> > * debugging -- I could imagine that it would make the job of debugging
> > an application that uses capabilities a little simpler.
> >
> > this patch adds the bounding set to /proc/self/status right after
> > the effective set.
> >
> > If at all possible (and if acked by Andrew Morgan) it would be nice to
> > get this into the 2.6.26 cycle.  But I realize it probably is too late
> > for that.
>
> I've no issue with this.
>
> > Signed-off-by: Serge E. Hallyn <serue@...ibm.com>
> > Acked-by: Michael Kerrisk <mtk.manpages@...il.com>
>
> Acked-by: Chris Wright <chrisw@...s-sol.org>
>
>
> > ---
> >  fs/proc/array.c |    1 +
> >  1 files changed, 1 insertions(+), 0 deletions(-)
> >
> > diff --git a/fs/proc/array.c b/fs/proc/array.c
> > index c135cbd..160dd4a 100644
> > --- a/fs/proc/array.c
> > +++ b/fs/proc/array.c
> > @@ -297,6 +297,7 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p)
> >       render_cap_t(m, "CapInh:\t", &p->cap_inheritable);
> >       render_cap_t(m, "CapPrm:\t", &p->cap_permitted);
> >       render_cap_t(m, "CapEff:\t", &p->cap_effective);
> > +     render_cap_t(m, "CapBnd:\t", &p->cap_bset);
> >  }
> >
> >  static inline void task_context_switch_counts(struct seq_file *m,
>



-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html
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