linux/include/linux/tty_flip.h
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   1#ifndef _LINUX_TTY_FLIP_H
   2#define _LINUX_TTY_FLIP_H
   3
   4extern int tty_buffer_request_room(struct tty_port *port, size_t size);
   5extern int tty_insert_flip_string_flags(struct tty_port *port,
   6                const unsigned char *chars, const char *flags, size_t size);
   7extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
   8                const unsigned char *chars, char flag, size_t size);
   9extern int tty_prepare_flip_string(struct tty_port *port,
  10                unsigned char **chars, size_t size);
  11extern int tty_prepare_flip_string_flags(struct tty_port *port,
  12                unsigned char **chars, char **flags, size_t size);
  13extern void tty_flip_buffer_push(struct tty_port *port);
  14void tty_schedule_flip(struct tty_port *port);
  15
  16static inline int tty_insert_flip_char(struct tty_port *port,
  17                                        unsigned char ch, char flag)
  18{
  19        struct tty_buffer *tb = port->buf.tail;
  20        if (tb && tb->used < tb->size) {
  21                tb->flag_buf_ptr[tb->used] = flag;
  22                tb->char_buf_ptr[tb->used++] = ch;
  23                return 1;
  24        }
  25        return tty_insert_flip_string_flags(port, &ch, &flag, 1);
  26}
  27
  28static inline int tty_insert_flip_string(struct tty_port *port,
  29                const unsigned char *chars, size_t size)
  30{
  31        return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
  32}
  33
  34#endif /* _LINUX_TTY_FLIP_H */
  35
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