Hi Christopher, On Tue, 20 Nov 2018 at 03:37, Christopher James Halse Rogers <christopher.halse.rogers@xxxxxxxxxxxxx> wrote: > > We can't use drmSetMaster to query whether or not a drm fd is master > because it requires CAP_SYS_ADMIN, even if the fd *is* a master fd. > Can you please mention the exact use case here? You mentioned it over IRC although it'll be nice to have it here for posterity. > Pick DRM_IOCTL_MODE_ATTACHMODE as a long-deprecated ioctl that is > DRM_MASTER but not DRM_ROOT_ONLY as the probe by which we can detect > whether or not the fd is master. > I'm wondering if we cannot extent DRM_IOCTL_GET_CLIENT or another IOCTL. What do you think? May I interest you in writing an RFC for the kernel-side? IMHO checking with the kernel devs for a cleaner solution is a worthy goal. If they're unhappy we can use this workaround. Thanks Emil _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel