On Wed, Dec 19, 2018 at 07:22:45PM +0000, Emil Velikov wrote:
> From: Emil Velikov <[email protected]>
>
> Currently only DRM_ROOT_ONLY is allowed to call the ioctl.
>
> Change that to DRM_MASTER, which means that only a process that is the
> current DRM master can drop it. Which makes sense, the process should
> be able to opt-out without any specific requirements.
>
> Signed-off-by: Emil Velikov <[email protected]>
I guess this makes sense, but then you already need someone else to do the
setmaster for you if you want to run as non-root and be able to switch
between compositors. So no idea where this will be useful.
Either way: New uapi -> needs the userspace patches to exist.
-Daniel
> ---
> drivers/gpu/drm/drm_ioctl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
> index 94bd872d56c4..2221c8857fb0 100644
> --- a/drivers/gpu/drm/drm_ioctl.c
> +++ b/drivers/gpu/drm/drm_ioctl.c
> @@ -578,7 +578,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
> DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_legacy_getsareactx,
> DRM_AUTH),
>
> DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl,
> DRM_UNLOCKED|DRM_ROOT_ONLY),
> - DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl,
> DRM_UNLOCKED|DRM_ROOT_ONLY),
> + DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl,
> DRM_UNLOCKED|DRM_MASTER),
>
> DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_legacy_addctx,
> DRM_AUTH|DRM_ROOT_ONLY),
> DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_legacy_rmctx,
> DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
> --
> 2.19.2
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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