tty_flip.h

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#ifndef _LINUX_TTY_FLIP_H
#define _LINUX_TTY_FLIP_H

extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size);
extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
void tty_schedule_flip(struct tty_struct *tty);

static inline int tty_insert_flip_char(struct tty_struct *tty,
                    unsigned char ch, char flag)
{
    struct tty_buffer *tb = tty->buf.tail;
    if (tb && tb->used < tb->size) {
        tb->flag_buf_ptr[tb->used] = flag;
        tb->char_buf_ptr[tb->used++] = ch;
        return 1;
    }
    return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
}

static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
{
    return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size);
}

#endif /* _LINUX_TTY_FLIP_H */