clonedevs
static struct clonedevs *vkbd_dev_clones = NULL;
clone_setup(struct clonedevs **cdp)
clone_create(struct clonedevs **cdp, struct cdevsw *csw, int *up,
struct clonedevs *cd;
clone_cleanup(struct clonedevs **cdp)
struct clonedevs *cd;
struct clonedevs *clones;
struct clonedevs;
void clone_setup(struct clonedevs **cdp);
void clone_cleanup(struct clonedevs **);
int clone_create(struct clonedevs **, struct cdevsw *, int *unit, struct cdev **dev, int extra);