153 static int __tty_fasync(int fd, struct file *filp, int on);
154 static int tty_fasync(int fd, struct file *filp, int on);
439 static unsigned int hung_up_tty_poll(struct file *filp, poll_table *wait)  in hung_up_tty_poll()  argument
670 	struct file *filp, *f = NULL;  in __tty_hangup()  local
701 		filp = priv->file;  in __tty_hangup()
702 		if (filp->f_op->write == redirected_tty_write)  in __tty_hangup()
703 			cons_filp = filp;  in __tty_hangup()
704 		if (filp->f_op->write != tty_write)  in __tty_hangup()
707 		__tty_fasync(-1, filp, 0);	/* can't block */  in __tty_hangup()
708 		filp->f_op = &hung_up_tty_fops;  in __tty_hangup()
849 int tty_hung_up_p(struct file *filp)  in tty_hung_up_p()  argument
851 	return (filp->f_op == &hung_up_tty_fops);  in tty_hung_up_p()
1770 int tty_release(struct inode *inode, struct file *filp)  in tty_release()  argument
1772 	struct tty_struct *tty = file_tty(filp);  in tty_release()
1786 	__tty_fasync(-1, filp, 0);  in tty_release()
1804 		tty->ops->close(tty, filp);  in tty_release()
1882 	tty_del_file(filp);  in tty_release()
1949 static struct tty_struct *tty_open_current_tty(dev_t device, struct file *filp)  in tty_open_current_tty()  argument
1961 	filp->f_flags |= O_NONBLOCK; /* Don't let /dev/tty block */  in tty_open_current_tty()
1987 static struct tty_driver *tty_lookup_driver(dev_t device, struct file *filp,  in tty_lookup_driver()  argument
2008 				filp->f_flags |= O_NONBLOCK;  in tty_lookup_driver()
2048 static int tty_open(struct inode *inode, struct file *filp)  in tty_open()  argument
2055 	unsigned saved_flags = filp->f_flags;  in tty_open()
2057 	nonseekable_open(inode, filp);  in tty_open()
2060 	retval = tty_alloc_file(filp);  in tty_open()
2064 	noctty = filp->f_flags & O_NOCTTY;  in tty_open()
2068 	tty = tty_open_current_tty(device, filp);  in tty_open()
2071 		driver = tty_lookup_driver(device, filp, &noctty, &index);  in tty_open()
2107 	tty_add_file(tty, filp);  in tty_open()
2117 		retval = tty->ops->open(tty, filp);  in tty_open()
2120 	filp->f_flags = saved_flags;  in tty_open()
2128 		tty_release(inode, filp);  in tty_open()
2139 		if (tty_hung_up_p(filp))  in tty_open()
2140 			filp->f_op = &tty_fops;  in tty_open()
2166 		if (filp->f_mode & FMODE_READ)  in tty_open()
2179 	tty_free_file(filp);  in tty_open()
2197 static unsigned int tty_poll(struct file *filp, poll_table *wait)  in tty_poll()  argument
2199 	struct tty_struct *tty = file_tty(filp);  in tty_poll()
2203 	if (tty_paranoia_check(tty, file_inode(filp), "tty_poll"))  in tty_poll()
2208 		ret = ld->ops->poll(tty, filp, wait);  in tty_poll()
2213 static int __tty_fasync(int fd, struct file *filp, int on)  in __tty_fasync()  argument
2215 	struct tty_struct *tty = file_tty(filp);  in __tty_fasync()
2220 	if (tty_paranoia_check(tty, file_inode(filp), "tty_fasync"))  in __tty_fasync()
2223 	retval = fasync_helper(fd, filp, on, &tty->fasync);  in __tty_fasync()
2248 		__f_setown(filp, pid, type, 0);  in __tty_fasync()
2256 static int tty_fasync(int fd, struct file *filp, int on)  in tty_fasync()  argument
2258 	struct tty_struct *tty = file_tty(filp);  in tty_fasync()
2262 	retval = __tty_fasync(fd, filp, on);  in tty_fasync()