140 void	ttyoutq_flush(struct ttyoutq *to);
141 int	ttyoutq_setsize(struct ttyoutq *to, struct tty *tp, size_t len);
142 void	ttyoutq_free(struct ttyoutq *to);
143 size_t	ttyoutq_read(struct ttyoutq *to, void *buf, size_t len);
144 int	ttyoutq_read_uio(struct ttyoutq *to, struct tty *tp, struct uio *uio);
145 size_t	ttyoutq_write(struct ttyoutq *to, const void *buf, size_t len);
146 int	ttyoutq_write_nofrag(struct ttyoutq *to, const void *buf, size_t len);
149 ttyoutq_getsize(struct ttyoutq *to)  in ttyoutq_getsize()  argument
151 	return (to->to_nblocks * TTYOUTQ_DATASIZE);  in ttyoutq_getsize()
155 ttyoutq_getallocatedsize(struct ttyoutq *to)  in ttyoutq_getallocatedsize()  argument
158 	return (to->to_quota * TTYOUTQ_DATASIZE);  in ttyoutq_getallocatedsize()
162 ttyoutq_bytesleft(struct ttyoutq *to)  in ttyoutq_bytesleft()  argument
167 	len = to->to_nblocks * TTYOUTQ_DATASIZE;  in ttyoutq_bytesleft()
168 	MPASS(len >= to->to_end);  in ttyoutq_bytesleft()
170 	return (len - to->to_end);  in ttyoutq_bytesleft()
174 ttyoutq_bytesused(struct ttyoutq *to)  in ttyoutq_bytesused()  argument
176 	return (to->to_end - to->to_begin);  in ttyoutq_bytesused()