Linux驱动开发杂记(0x17) - 内核tty接口各版本的变化(一)之tty_flip.h

2.6.15 - 2.6.16

添加

extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
extern int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t size);
extern int tty_insert_flip_string_flags(struct tty_struct *tty, unsigned char *chars, char *flags, 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);

修改

1
2
3

_INLINE_ void tty_insert_flip_char(struct tty_struct *tty, unsigned char ch, char flag)
//改为
_INLINE_ int tty_insert_flip_char(struct tty_struct *tty, unsigned char ch, char flag)

2.6.33 - 2.6.34

添加

1	extern int tty_insert_flip_string_fixed_flag(struct tty_struct tty, const unsigned char chars, char flag, size_t size);

3.8 - 3.9

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);
//改为
extern int tty_buffer_request_room(struct tty_port *port, size_t size);
extern int tty_insert_flip_string_flags(struct tty_port *port,
               const unsigned char *chars, const char *flags, size_t size);
extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
               const unsigned char *chars, char flag, size_t size);
extern int tty_prepare_flip_string(struct tty_port *port,
               unsigned char **chars, size_t size);
extern int tty_prepare_flip_string_flags(struct tty_port *port,
               unsigned char **chars, char **flags, size_t size);
extern void tty_flip_buffer_push(struct tty_port *port);
void tty_schedule_flip(struct tty_port *port);

1
2
3

static inline int tty_insert_flip_char(struct tty_struct *tty, unsigned char ch, char flag)
//改为
static inline int tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag)

static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
//改为
static inline int tty_insert_flip_string(struct tty_port *port,
               const unsigned char *chars, size_t size)

3.11 - 3.12

添加

1	extern int tty_buffer_space_avail(struct tty_port *port);

1 2	extern void tty_buffer_lock_exclusive(struct tty_port port); extern void tty_buffer_unlock_exclusive(struct tty_port port);

3.13 - 3.14

添加

1	extern int tty_buffer_set_limit(struct tty_port *port, int limit);

删除

1 2	extern int tty_prepare_flip_string_flags(struct tty_port port, unsigned char chars, char *flags, size_t size);