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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/tty_flip.h
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
);
15 int __tty_insert_flip_char(struct tty_port
*port
, unsigned char ch
, char flag
);
17 static inline int tty_insert_flip_char(struct tty_port
*port
,
18 unsigned char ch
, char flag
)
20 struct tty_buffer
*tb
= port
->buf
.tail
;
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
;
30 return __tty_insert_flip_char(port
, ch
, flag
);
33 static inline int tty_insert_flip_string(struct tty_port
*port
,
34 const unsigned char *chars
, size_t size
)
36 return tty_insert_flip_string_fixed_flag(port
, chars
, TTY_NORMAL
, size
);
39 extern void tty_buffer_lock_exclusive(struct tty_port
*port
);
40 extern void tty_buffer_unlock_exclusive(struct tty_port
*port
);
42 #endif /* _LINUX_TTY_FLIP_H */