1 #ifndef _LINUX_TTY_FLIP_H
2 #define _LINUX_TTY_FLIP_H
4 extern int tty_buffer_set_limit(struct tty_port *port, int limit);
5 extern int tty_buffer_space_avail(struct tty_port *port);
6 extern int tty_buffer_request_room(struct tty_port *port, size_t size);
7 extern int tty_insert_flip_string_flags(struct tty_port *port,
8 const unsigned char *chars, const char *flags, size_t size);
9 extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
10 const unsigned char *chars, char flag, size_t size);
11 extern int tty_prepare_flip_string(struct tty_port *port,
12 unsigned char **chars, size_t size);
13 extern void tty_flip_buffer_push(struct tty_port *port);
14 void tty_schedule_flip(struct tty_port *port);
16 static inline int tty_insert_flip_char(struct tty_port *port,
17 unsigned char ch, char flag)
19 struct tty_buffer *tb = port->buf.tail;
22 change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL);
23 if (!change && tb->used < tb->size) {
24 if (~tb->flags & TTYB_NORMAL)
25 *flag_buf_ptr(tb, tb->used) = flag;
26 *char_buf_ptr(tb, tb->used++) = ch;
29 return tty_insert_flip_string_flags(port, &ch, &flag, 1);
32 static inline int tty_insert_flip_string(struct tty_port *port,
33 const unsigned char *chars, size_t size)
35 return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
38 extern void tty_buffer_lock_exclusive(struct tty_port *port);
39 extern void tty_buffer_unlock_exclusive(struct tty_port *port);
41 #endif /* _LINUX_TTY_FLIP_H */