[PATCH] security/ima: use fs method to read integrity data

[Mimi Zohar]

On Mon, 2017-06-05 at 10:23 +1000, James Morris wrote:
> On Sun, 4 Jun 2017, Christoph Hellwig wrote:
> 
> > On Thu, May 11, 2017 at 09:59:51AM +1000, James Morris wrote:
> > > On Wed, 10 May 2017, Christoph Hellwig wrote:
> > > 
> > > > Add a new ->integrity_read file operation to read data for
> > > > integrity hash collection.  This is defined to be equivalent
> > > > to ->read_iter, except that it will be called with the i_rwsem
> > > > held exclusively.  Also the presence of ->integrity_read indicates
> > > > that the file system can support IMA.
> > > > 
> > > > Signed-off-by: Christoph Hellwig <hch at lst.de>
> > > 
> > > Fixes an IMA+XFS deadlock I've been seeing.
> > 
> > Are you going to pick this up?  Any feedback from the folks on the
> > LSM list on what additional file systems need to be wired up?
> 
> That would normally come in via Mimi's tree, but I will pick it up if it 
> doesn't.

With just this patch, a number of file measurements and appraisal
verifications are missing.  I'm hoping to have an initial patch set
ready to be posted later this week.

Sorry for the delay.

Mimi

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