Re: [RFC PATCH ghak32 V2 10/13] audit: add containerid support for seccomp and anom_abend records

[Richard Guy Briggs]

On 2018-04-18 21:31, Paul Moore wrote:
> On Fri, Mar 16, 2018 at 5:00 AM, Richard Guy Briggs <rgb@xxxxxxxxxx> wrote:
> > Add container ID auxiliary records to secure computing and abnormal end
> > standalone records.
> >
> > Signed-off-by: Richard Guy Briggs <rgb@xxxxxxxxxx>
> > ---
> >  kernel/auditsc.c | 10 ++++++++--
> >  1 file changed, 8 insertions(+), 2 deletions(-)
> >
> > diff --git a/kernel/auditsc.c b/kernel/auditsc.c
> > index 7103d23..2f02ed9 100644
> > --- a/kernel/auditsc.c
> > +++ b/kernel/auditsc.c
> > @@ -2571,6 +2571,7 @@ static void audit_log_task(struct audit_buffer *ab)
> >  void audit_core_dumps(long signr)
> >  {
> >         struct audit_buffer *ab;
> > +       struct audit_context *context = audit_alloc_local();
> 
> Looking quickly at do_coredump() I *believe* we can use current here.
> 
> >         if (!audit_enabled)
> >                 return;
> > @@ -2578,19 +2579,22 @@ void audit_core_dumps(long signr)
> >         if (signr == SIGQUIT)   /* don't care for those */
> >                 return;
> >
> > -       ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
> > +       ab = audit_log_start(context, GFP_KERNEL, AUDIT_ANOM_ABEND);
> >         if (unlikely(!ab))
> >                 return;
> >         audit_log_task(ab);
> >         audit_log_format(ab, " sig=%ld res=1", signr);
> >         audit_log_end(ab);
> > +       audit_log_container_info(context, "abend", audit_get_containerid(current));
> > +       audit_free_context(context);
> >  }
> >
> >  void __audit_seccomp(unsigned long syscall, long signr, int code)
> >  {
> >         struct audit_buffer *ab;
> > +       struct audit_context *context = audit_alloc_local();
> 
> We can definitely use current here.

Ok, so both syscall aux records.  That elimintes this patch from the
set, can go in independently.

> > -       ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_SECCOMP);
> > +       ab = audit_log_start(context, GFP_KERNEL, AUDIT_SECCOMP);
> >         if (unlikely(!ab))
> >                 return;
> >         audit_log_task(ab);
> > @@ -2598,6 +2602,8 @@ void __audit_seccomp(unsigned long syscall, long signr, int code)
> >                          signr, syscall_get_arch(), syscall,
> >                          in_compat_syscall(), KSTK_EIP(current), code);
> >         audit_log_end(ab);
> > +       audit_log_container_info(context, "seccomp", audit_get_containerid(current));
> > +       audit_free_context(context);
> >  }
> >
> >  struct list_head *audit_killed_trees(void)
> 
> -- 
> paul moore
> www.paul-moore.com
> 
> --
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- RGB

--
Richard Guy Briggs <rgb@xxxxxxxxxx>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635