tty_udev
*(dev_t *)data = tty_udev(ss->snp_tty);
*(uint32_t *)data = tty_udev(ss->snp_tty); /* trunc */
acct.ac_tty = tty_udev(p->p_pgrp->pg_session->s_ttyp);
kp->ki_tdev = tty_udev(tp);
tty_udev(p->p_session->s_ttyp) !=
sb->st_ino = sb->st_rdev = tty_udev(tp);
kif->kf_un.kf_pts.kf_pts_dev = tty_udev(tp);
dev_t tty_udev(struct tty *tp);