linux-kernel - Re: [PATCH ghak111 V1] audit: deliver siginfo regarless of syscall

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Message-ID: <20190409173716.1a0308fb@ivy-bridge>
Date:   Tue, 9 Apr 2019 17:37:16 +0200
From:   Steve Grubb <sgrubb@...hat.com>
To:     Richard Guy Briggs <rgb@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux-Audit Mailing List <linux-audit@...hat.com>,
        Paul Moore <paul@...l-moore.com>, omosnace@...hat.com,
        eparis@...isplace.org, ebiederm@...ssion.com, oleg@...hat.com
Subject: Re: [PATCH ghak111 V1] audit: deliver siginfo regarless of syscall

On Tue, 9 Apr 2019 10:02:59 -0400
Richard Guy Briggs <rgb@...hat.com> wrote:

> On 2019-04-09 08:01, Steve Grubb wrote:
> > On Mon,  8 Apr 2019 23:52:29 -0400 Richard Guy Briggs
> > <rgb@...hat.com> wrote:  
> > > When a process signals the audit daemon (shutdown, rotate, resume,
> > > reconfig) but syscall auditing is not enabled, we still want to
> > > know the identity of the process sending the signal to the audit
> > > daemon.  
> > 
> > Why? If syscall auditing is disabled, then there is no requirement
> > to provide anything. What is the real problem that you are seeing?  
> 
> Shutdown messages with -1 in them rather than the real values.

OK. We can fix that by patching auditd to see if auditing is enabled
before requesting signal info. If auditing is disabled, the proper
action is for the kernel to ignore any audit userspace messages except
the configuration commands.

-Steve