From: David Howells <dhowells@redhat.com>
To: Michal Schmidt <mschmidt@redhat.com>
Cc: dhowells@redhat.com, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH v2] bsdacct: switch credentials for writing to the accounting file
Date: Thu, 20 Aug 2009 15:04:03 +0100 [thread overview]
Message-ID: <3961.1250777043@redhat.com> (raw)
In-Reply-To: <20090820154734.3db7d7ae@leela>
Michal Schmidt <mschmidt@redhat.com> wrote:
> When process accounting is enabled, every exiting process writes a log
> to the account file. In addition, every once in a while one of the
> exiting processes checks whether there's enough free space for the log.
>
> SELinux policy may or may not allow the exiting process to stat the fs.
> So unsuspecting processes start generating AVC denials just because
> someone enabled process accounting.
>
> For these filesystem operations, the exiting process's credentials
> should be temporarily switched to that of the process which enabled
> accounting, because it's really that process who wanted to have the
> accounting information logged.
>
> Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
prev parent reply other threads:[~2009-08-20 14:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-19 16:36 [PATCH] bsdacct: switch credentials for writing to the accounting file Michal Schmidt
2009-08-20 10:02 ` David Howells
2009-08-20 13:47 ` [PATCH v2] " Michal Schmidt
2009-08-20 14:04 ` David Howells [this message]
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