[Intel-gfx] [PATCH] drm/i915: allow root to submit secure buffers even if !master

[Jesse Barnes]

On Wed, 17 Jul 2013 21:20:07 +0100
Chris Wilson <chris at chris-wilson.co.uk> wrote:

> On Wed, Jul 17, 2013 at 09:45:30AM -0700, Jesse Barnes wrote:
> > This should allow userland tools running under X to submit secure
> > batches for various things.  This gives master DRM clients slightly more
> > permissions, but doesn't give regular processes any more, since a root
> > process can already map the registers directly and poke at hw.
> > 
> > Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> > ---
> >  drivers/gpu/drm/i915/i915_gem_execbuffer.c |    8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> > index 1b58694..377aa1f 100644
> > --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> > +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> > @@ -858,10 +858,10 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
> >  
> >  	flags = 0;
> >  	if (args->flags & I915_EXEC_SECURE) {
> > -		if (!file->is_master || !capable(CAP_SYS_ADMIN))
> > +		if (!f(ile->is_master || capable(CAP_SYS_ADMIN)))
> > 		    return -EPERM;
> 
> Would have made for a much smaller patch.

And maybe without the typo? :)

-- 
Jesse Barnes, Intel Open Source Technology Center