Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_TTY_FLIP_H
3#define _LINUX_TTY_FLIP_H
4
5#include <linux/tty_buffer.h>
6#include <linux/tty_port.h>
7
8struct tty_ldisc;
9
10int tty_buffer_set_limit(struct tty_port *port, int limit);
11unsigned int tty_buffer_space_avail(struct tty_port *port);
12int tty_buffer_request_room(struct tty_port *port, size_t size);
13int tty_insert_flip_string_flags(struct tty_port *port,
14 const unsigned char *chars, const char *flags, size_t size);
15int tty_insert_flip_string_fixed_flag(struct tty_port *port,
16 const unsigned char *chars, char flag, size_t size);
17int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,
18 size_t size);
19void tty_flip_buffer_push(struct tty_port *port);
20void tty_schedule_flip(struct tty_port *port);
21int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
22
23static inline int tty_insert_flip_char(struct tty_port *port,
24 unsigned char ch, char flag)
25{
26 struct tty_buffer *tb = port->buf.tail;
27 int change;
28
29 change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL);
30 if (!change && tb->used < tb->size) {
31 if (~tb->flags & TTYB_NORMAL)
32 *flag_buf_ptr(tb, tb->used) = flag;
33 *char_buf_ptr(tb, tb->used++) = ch;
34 return 1;
35 }
36 return __tty_insert_flip_char(port, ch, flag);
37}
38
39static inline int tty_insert_flip_string(struct tty_port *port,
40 const unsigned char *chars, size_t size)
41{
42 return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
43}
44
45int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
46 const char *f, int count);
47
48void tty_buffer_lock_exclusive(struct tty_port *port);
49void tty_buffer_unlock_exclusive(struct tty_port *port);
50
51#endif /* _LINUX_TTY_FLIP_H */