1 #ifndef _LINUX_TTY_FLIP_H 2 #define _LINUX_TTY_FLIP_H 3 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 int tty_prepare_flip_string_flags(struct tty_port *port, 14 unsigned char **chars, char **flags, size_t size); 15 extern void tty_flip_buffer_push(struct tty_port *port); 16 void tty_schedule_flip(struct tty_port *port); 17 18 static inline int tty_insert_flip_char(struct tty_port *port, 19 unsigned char ch, char flag) 20 { 21 struct tty_buffer *tb = port->buf.tail; 22 if (tb && tb->used < tb->size) { 23 *flag_buf_ptr(tb, tb->used) = flag; 24 *char_buf_ptr(tb, tb->used++) = ch; 25 return 1; 26 } 27 return tty_insert_flip_string_flags(port, &ch, &flag, 1); 28 } 29 30 static inline int tty_insert_flip_string(struct tty_port *port, 31 const unsigned char *chars, size_t size) 32 { 33 return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); 34 } 35 36 extern void tty_buffer_lock_exclusive(struct tty_port *port); 37 extern void tty_buffer_unlock_exclusive(struct tty_port *port); 38 39 #endif /* _LINUX_TTY_FLIP_H */ 40