include/linux/tty_flip.h

   1 #ifndef _LINUX_TTY_FLIP_H
   2 #define _LINUX_TTY_FLIP_H
   3
   4 extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
   5 extern int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size);
   6 extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
   7 extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
   8 extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
   9 void tty_schedule_flip(struct tty_struct *tty);
  10
  11 static inline int tty_insert_flip_char(struct tty_struct *tty,
  12                                         unsigned char ch, char flag)
  13 {
  14         struct tty_buffer *tb = tty->buf.tail;
  15         if (tb && tb->used < tb->size) {
  16                 tb->flag_buf_ptr[tb->used] = flag;
  17                 tb->char_buf_ptr[tb->used++] = ch;
  18                 return 1;
  19         }
  20         return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
  21 }
  22
  23 #endif /* _LINUX_TTY_FLIP_H */