66 int cnopen(__unused dev_t dev, int flag, int devtype, proc_t pp);
67 int cnclose(__unused dev_t dev, int flag, int mode, proc_t pp);
68 int cnread(__unused dev_t dev, struct uio *uio, int ioflag);
69 int cnwrite(__unused dev_t dev, struct uio *uio, int ioflag);
70 int cnioctl(__unused dev_t dev, u_long cmd, caddr_t addr, int flg, proc_t p);
71 int cnselect(__unused dev_t dev, int flag, void * wql, proc_t p);
74 cnopen(__unused dev_t dev, int flag, int devtype, struct proc *pp)  in cnopen()  argument
79 		dev = constty->t_dev;  in cnopen()
81 		dev = km_tty[0]->t_dev;  in cnopen()
83 	error = (*cdevsw[major(dev)].d_open)(dev, flag, devtype, pp);  in cnopen()
92 cnclose(__unused dev_t dev, int flag, int mode, struct proc *pp)  in cnclose()  argument
97 		dev = constty->t_dev;  in cnclose()
99 		dev = km_tty[0]->t_dev;  in cnclose()
101 	error = (*cdevsw[major(dev)].d_close)(dev, flag, mode, pp);  in cnclose()
110 cnread(__unused dev_t dev, struct uio *uio, int ioflag)  in cnread()  argument
115 		dev = constty->t_dev;  in cnread()
117 		dev = km_tty[0]->t_dev;  in cnread()
119 	error = (*cdevsw[major(dev)].d_read)(dev, uio, ioflag);  in cnread()
128 cnwrite(__unused dev_t dev, struct uio *uio, int ioflag)  in cnwrite()  argument
133 		dev = constty->t_dev;  in cnwrite()
135 		dev = km_tty[0]->t_dev;  in cnwrite()
137 	error = (*cdevsw[major(dev)].d_write)(dev, uio, ioflag);  in cnwrite()
146 cnioctl(__unused dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)  in cnioctl()  argument
152 		dev = constty->t_dev;  in cnioctl()
154 		dev = km_tty[0]->t_dev;  in cnioctl()
176 		error = (*cdevsw[major(dev)].d_ioctl)(dev, cmd, addr, flag, p);  in cnioctl()
187 cnselect(__unused dev_t dev, int flag, void *wql, struct proc *p)  in cnselect()  argument
192 		dev = constty->t_dev;  in cnselect()
194 		dev = km_tty[0]->t_dev;  in cnselect()
196 	error = (*cdevsw[major(dev)].d_select)(dev, flag, wql, p);  in cnselect()