[PATCH] Audit: save audit_backlog_limit audit messages in case auditd comes back
Eric Paris
eparis at redhat.com
Fri Mar 28 00:52:03 UTC 2008
On Thu, 2008-03-27 at 17:50 -0400, Steve Grubb wrote:
> On Thursday 27 March 2008 17:37:44 Eric Paris wrote:
> > This is useful to collect audit messages during bootup and even when auditd
> > is stopped. This is NOT a reliable mechanism, it does not ever call
> > audit_panic, nor should it.
>
> Thanks Eric for working on this. We've needed this for quite a while so that
> we can see some of the avcs that happen during boot.
>
>
> > If auditd never starts the kernel will hold by default up to 64 messages
> > in memory forever.
>
> I have an idea. Maybe this behavior could be enabled if audit=1 is passed as a
> boot parameter. In this way, you would know that the user intended for the
> audit daemon to start at some point. You could then call audit panic or
> whatever else is normal. If no audit=1 is passed, you could just do the
> printk like usual and not waste memory. Would this be helpful?
I could probably do that. I also could conditionalize it on auditd ever
having run. I can't imagine it is normal for auditd to be running and
then stopped forever....
Anyone else see value in that situation? Only do it on boot if audit=1
is passed? Does anyone actually use that command line option?
-Eric
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