158 static int __tty_fasync(int fd, struct file *filp, int on);
159 static int tty_fasync(int fd, struct file *filp, int on);
450 static unsigned int hung_up_tty_poll(struct file *filp, poll_table *wait)  in hung_up_tty_poll()  argument
682 	struct file *filp, *f = NULL;  in __tty_hangup()  local
713 		filp = priv->file;  in __tty_hangup()
714 		if (filp->f_op->write == redirected_tty_write)  in __tty_hangup()
715 			cons_filp = filp;  in __tty_hangup()
716 		if (filp->f_op->write != tty_write)  in __tty_hangup()
719 		__tty_fasync(-1, filp, 0);	/* can't block */  in __tty_hangup()
720 		filp->f_op = &hung_up_tty_fops;  in __tty_hangup()
850 int tty_hung_up_p(struct file *filp)  in tty_hung_up_p()  argument
852 	return (filp->f_op == &hung_up_tty_fops);  in tty_hung_up_p()
1764 int tty_release(struct inode *inode, struct file *filp)  in tty_release()  argument
1766 	struct tty_struct *tty = file_tty(filp);  in tty_release()
1779 	__tty_fasync(-1, filp, 0);  in tty_release()
1794 		tty->ops->close(tty, filp);  in tty_release()
1872 	tty_del_file(filp);  in tty_release()
1935 static struct tty_struct *tty_open_current_tty(dev_t device, struct file *filp)  in tty_open_current_tty()  argument
1947 	filp->f_flags |= O_NONBLOCK; /* Don't let /dev/tty block */  in tty_open_current_tty()
1973 static struct tty_driver *tty_lookup_driver(dev_t device, struct file *filp,  in tty_lookup_driver()  argument
1994 				filp->f_flags |= O_NONBLOCK;  in tty_lookup_driver()
2034 static int tty_open(struct inode *inode, struct file *filp)  in tty_open()  argument
2041 	unsigned saved_flags = filp->f_flags;  in tty_open()
2043 	nonseekable_open(inode, filp);  in tty_open()
2046 	retval = tty_alloc_file(filp);  in tty_open()
2050 	noctty = filp->f_flags & O_NOCTTY;  in tty_open()
2054 	tty = tty_open_current_tty(device, filp);  in tty_open()
2057 		driver = tty_lookup_driver(device, filp, &noctty, &index);  in tty_open()
2097 		tty_free_file(filp);  in tty_open()
2102 	tty_add_file(tty, filp);  in tty_open()
2112 		retval = tty->ops->open(tty, filp);  in tty_open()
2115 	filp->f_flags = saved_flags;  in tty_open()
2121 		tty_release(inode, filp);  in tty_open()
2132 		if (tty_hung_up_p(filp))  in tty_open()
2133 			filp->f_op = &tty_fops;  in tty_open()
2159 		if (filp->f_mode & FMODE_READ)  in tty_open()
2173 	tty_free_file(filp);  in tty_open()
2191 static unsigned int tty_poll(struct file *filp, poll_table *wait)  in tty_poll()  argument
2193 	struct tty_struct *tty = file_tty(filp);  in tty_poll()
2197 	if (tty_paranoia_check(tty, file_inode(filp), "tty_poll"))  in tty_poll()
2202 		ret = ld->ops->poll(tty, filp, wait);  in tty_poll()
2207 static int __tty_fasync(int fd, struct file *filp, int on)  in __tty_fasync()  argument
2209 	struct tty_struct *tty = file_tty(filp);  in __tty_fasync()
2214 	if (tty_paranoia_check(tty, file_inode(filp), "tty_fasync"))  in __tty_fasync()
2217 	retval = fasync_helper(fd, filp, on, &tty->fasync);  in __tty_fasync()
2242 		__f_setown(filp, pid, type, 0);  in __tty_fasync()
2250 static int tty_fasync(int fd, struct file *filp, int on)  in tty_fasync()  argument
2252 	struct tty_struct *tty = file_tty(filp);  in tty_fasync()
2256 	retval = __tty_fasync(fd, filp, on);  in tty_fasync()