kiockeymap
static int kbd_iockeymap(struct kbd_state *, u_long, struct kiockeymap *);
error = kbd_iockeymap(ks, cmd, (struct kiockeymap *)data);
kbd_iockeymap(struct kbd_state *ks, u_long cmd, struct kiockeymap *kio)
#define KIOCSKEY _IOW('k', 12, struct kiockeymap) /* set xlat mode */
#define KIOCGKEY _IOWR('k', 13, struct kiockeymap) /* get xlat mode */