[PATCH 09/13] drm/omap: drop DRM_AUTH from DRM_RENDER_ALLOW ioctls

Emil Velikov emil.l.velikov at gmail.com
Thu Jun 6 10:58:47 UTC 2019


On Mon, 27 May 2019 at 09:19, Emil Velikov <emil.l.velikov at gmail.com> wrote:
>
> From: Emil Velikov <emil.velikov at collabora.com>
>
> The authentication can be circumvented, by design, by using the render
> node.
>
> From the driver POV there is no distinction between primary and render
> nodes, thus we can drop the token.
>
> Note: the outstanding DRM_AUTH instance is:
>  - (badly coped) legacy DRI1 ioctl, which is a noop
>
> Cc: Tomi Valkeinen <tomi.valkeinen at ti.com>
> Cc: David Airlie <airlied at linux.ie>
> Cc: Daniel Vetter <daniel at ffwll.ch>
> Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
>
> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
> ---
>  drivers/gpu/drm/omapdrm/omap_drv.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
> index 1b9b6f5e48e1..f97781f9d936 100644
> --- a/drivers/gpu/drm/omapdrm/omap_drv.c
> +++ b/drivers/gpu/drm/omapdrm/omap_drv.c
> @@ -491,19 +491,19 @@ static int ioctl_gem_info(struct drm_device *dev, void *data,
>
>  static const struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
>         DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param,
> -                         DRM_AUTH | DRM_RENDER_ALLOW),
> +                         DRM_RENDER_ALLOW),
>         DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param,
>                           DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
>         DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new,
> -                         DRM_AUTH | DRM_RENDER_ALLOW),
> +                         DRM_RENDER_ALLOW),
>         /* Deprecated, to be removed. */
>         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, drm_noop,
> -                         DRM_AUTH | DRM_RENDER_ALLOW),
> +                         DRM_RENDER_ALLOW),
>         /* Deprecated, to be removed. */
>         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, drm_noop,
> -                         DRM_AUTH | DRM_RENDER_ALLOW),
> +                         DRM_RENDER_ALLOW),
>         DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info,
> -                         DRM_AUTH | DRM_RENDER_ALLOW),
> +                         DRM_RENDER_ALLOW),
>  };
>
>  /*
> --
> 2.21.0
>
Humble poke?

Thanks,
Emil


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