Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _LINUX_TTY_FLIP_H
2#define _LINUX_TTY_FLIP_H
3
4extern int tty_buffer_set_limit(struct tty_port *port, int limit);
5extern int tty_buffer_space_avail(struct tty_port *port);
6extern int tty_buffer_request_room(struct tty_port *port, size_t size);
7extern int tty_insert_flip_string_flags(struct tty_port *port,
8 const unsigned char *chars, const char *flags, size_t size);
9extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
10 const unsigned char *chars, char flag, size_t size);
11extern int tty_prepare_flip_string(struct tty_port *port,
12 unsigned char **chars, size_t size);
13extern void tty_flip_buffer_push(struct tty_port *port);
14void tty_schedule_flip(struct tty_port *port);
15int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
16
17static inline int tty_insert_flip_char(struct tty_port *port,
18 unsigned char ch, char flag)
19{
20 struct tty_buffer *tb = port->buf.tail;
21 int change;
22
23 change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL);
24 if (!change && tb->used < tb->size) {
25 if (~tb->flags & TTYB_NORMAL)
26 *flag_buf_ptr(tb, tb->used) = flag;
27 *char_buf_ptr(tb, tb->used++) = ch;
28 return 1;
29 }
30 return __tty_insert_flip_char(port, ch, flag);
31}
32
33static inline int tty_insert_flip_string(struct tty_port *port,
34 const unsigned char *chars, size_t size)
35{
36 return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
37}
38
39extern void tty_buffer_lock_exclusive(struct tty_port *port);
40extern void tty_buffer_unlock_exclusive(struct tty_port *port);
41
42#endif /* _LINUX_TTY_FLIP_H */