ttyopen          1042 dev/pci/cz.c   	error = ttyopen(CZTTY_DIALOUT(dev), tp);
ttyopen           513 dev/usb/ucom.c 	error = ttyopen(UCOMUNIT(dev), tp);
ttyopen            96 kern/tty_conf.c 	{ ttyopen, ttylclose, ttread, ttwrite, nullioctl,
ttyopen           103 kern/tty_conf.c 	{ ttyopen, ttylclose, ttread, ttwrite, nullioctl,
ttyopen           286 sys/tty.h      int	 ttyopen(dev_t device, struct tty *tp);