[PATCH v2] lsm, io_uring: add LSM hooks for the new uring_cmd file op

[Paul Moore]

On Fri, Jul 15, 2022 at 3:52 PM Paul Moore <paul at paul-moore.com> wrote:
> On Fri, Jul 15, 2022 at 3:28 PM Jens Axboe <axboe at kernel.dk> wrote:
> > On 7/15/22 1:16 PM, Luis Chamberlain wrote:
> > > io-uring cmd support was added through ee692a21e9bf ("fs,io_uring:
> > > add infrastructure for uring-cmd"), this extended the struct
> > > file_operations to allow a new command which each subsystem can use
> > > to enable command passthrough. Add an LSM specific for the command
> > > passthrough which enables LSMs to inspect the command details.
> > >
> > > This was discussed long ago without no clear pointer for something
> > > conclusive, so this enables LSMs to at least reject this new file
> > > operation.
> >
> > From an io_uring perspective, this looks fine to me. It may be easier if
> > I take this through my tree due to the moving of the files, or the
> > security side can do it but it'd have to then wait for merge window (and
> > post io_uring branch merge) to do so. Just let me know. If done outside
> > of my tree, feel free to add:

I forgot to add this earlier ... let's see how the timing goes, I
don't expect the LSM/Smack/SELinux bits to be ready and tested before
the merge window opens so I'm guessing this will not be an issue in
practice, but thanks for the heads-up.

-- 
paul-moore.com