linux-kernel - Re: [PATCH] Security/sysfs: Enable security xattrs to be set on sysfs files, directories, and symlinks.

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Message-ID: <20090709201333.GC27124@suse.de>
Date:	Thu, 9 Jul 2009 13:13:33 -0700
From:	Greg KH <gregkh@...e.de>
To:	"David P. Quigley" <dpquigl@...ho.nsa.gov>
Cc:	Casey Schaufler <casey@...aufler-ca.com>, jmorris@...ei.org,
	sds@...ho.nsa.gov, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH] Security/sysfs: Enable security xattrs to be set on
 sysfs files, directories, and symlinks.

On Thu, Jul 09, 2009 at 03:32:56PM -0400, David P. Quigley wrote:
> On Thu, 2009-07-09 at 10:50 -0700, Greg KH wrote:
> > On Thu, Jul 09, 2009 at 01:26:44PM -0400, David P. Quigley wrote:
> > > I just read over Casey's comments again and I'm pretty sure we have a
> > > big misunderstanding here. From his initial response it seems that he
> > > thinks that I am exposing the secids to userspace as the way for setting
> > > the labels on files. That isn't true. We are still using the full string
> > > based labels for the userspace interface what the secid is used for is
> > > to allow the kernel to keep track of changes until the sysfs_dirent is
> > > destroyed. 
> > 
> > Ok, if Casey and others agree that this is the best solution, I'll take
> > it.
> > 
> > thanks,
> > 
> > greg k-h
> 
> 
> I haven't heard from Casey since his last email so I'd hold off on
> taking this until we come to an agreement. It seems though from your
> comments in another mail that putting the persistent data into the
> sysfs_dirent is the proper approach and we just need to figure out what
> to put there.

Yes, I think the approach is proper, you all just need to agree what it
is you are putting there.

thanks,

greg k-h
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