1 #ifndef _LINUX_TTY_FLIP_H 2 #define _LINUX_TTY_FLIP_H 3 4 extern int tty_buffer_space_avail(struct tty_port *port); 5 extern int tty_buffer_request_room(struct tty_port *port, size_t size); 6 extern int tty_insert_flip_string_flags(struct tty_port *port, 7 const unsigned char *chars, const char *flags, size_t size); 8 extern int tty_insert_flip_string_fixed_flag(struct tty_port *port, 9 const unsigned char *chars, char flag, size_t size); 10 extern int tty_prepare_flip_string(struct tty_port *port, 11 unsigned char **chars, size_t size); 12 extern int tty_prepare_flip_string_flags(struct tty_port *port, 13 unsigned char **chars, char **flags, size_t size); 14 extern void tty_flip_buffer_push(struct tty_port *port); 15 void tty_schedule_flip(struct tty_port *port); 16 17 static 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 if (tb && tb->used < tb->size) { 22 *flag_buf_ptr(tb, tb->used) = flag; 23 *char_buf_ptr(tb, tb->used++) = ch; 24 return 1; 25 } 26 return tty_insert_flip_string_flags(port, &ch, &flag, 1); 27 } 28 29 static inline int tty_insert_flip_string(struct tty_port *port, 30 const unsigned char *chars, size_t size) 31 { 32 return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); 33 } 34 35 extern void tty_buffer_lock_exclusive(struct tty_port *port); 36 extern void tty_buffer_unlock_exclusive(struct tty_port *port); 37 38 #endif /* _LINUX_TTY_FLIP_H */ 39