#ifndef _TERMIOS_H
#define _TERMIOS_H
typedef unsigned char cc_t;
typedef unsigned int speed_t;
typedef unsigned int tcflag_t;
struct termios {
    tcflag_t c_iflag;
    tcflag_t c_oflag;
    tcflag_t c_cflag;
    tcflag_t c_lflag;
    cc_t c_line;
    cc_t c_cc[32];
    speed_t c_ispeed;
    speed_t c_ospeed;
};
#define ECHO 0000010
#define ICANON 0000002
#define ISIG   0000001
#define IEXTEN 0100000

#define IGNBRK 0000001
#define BRKINT 0000002
#define IGNPAR 0000004
#define PARMRK 0000010
#define INPCK  0000020
#define ISTRIP 0000040
#define INLCR  0000100
#define IGNCR  0000200
#define ICRNL  0000400
#define IUCLC  0001000
#define IXON   0002000
#define IXANY  0004000
#define IXOFF  0010000
#define IMAXBEL 0020000
#define IUTF8  0040000

#define TCSANOW 0
#define TCSADRAIN 1
#define TCSAFLUSH 2

#define VINTR 0
#define VQUIT 1
#define VERASE 2
#define VKILL 3
#define VEOF 4
#define VTIME 5
#define VMIN 6
#define VSWTC 7
#define VSTART 8
#define VSTOP 9
#define VSUSP 10
#define VEOL 11
#define VREPRINT 12
#define VDISCARD 13
#define VWERASE 14
#define VLNEXT 15
#define VEOL2 16

int tcgetattr(int fd, struct termios *termios_p);
int tcsetattr(int fd, int optional_actions, const struct termios *termios_p);
#endif