Hi all,
Some DRM ioctls like this: DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx,
DRM_AUTH|DRM_ROOT_ONLY),
it means that the drm_addctx must be called with both DRM_auth and root
priviledge. And I have a dount that the DRM_ROOT_ONLY is the superset of
DRM_AUTH according to the code below:
static int drm_open_helper(struct inode *inode, struct file *filp,
struct drm_device * dev)
{
.......
priv->authenticated = capable(CAP_SYS_ADMIN);
.......
}
So why is it necessary to put flag DRM_AUTH besides DRM_ROOT_ONLY?
Thanks.
Donnie
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