링크 ux C 키보드 정보 가 져 오기

cat /proc/bus/input/devices

#include 
#include 
#include 
#include 
#include 
#include 
#include 

#define INPUT_KEYBOARD "/dev/input/event4"

int get_key_board_from_input()
{
    int fd = -1, ret = -1;
    struct input_event ev;

    fd = open(INPUT_KEYBOARD , O_RDONLY);
    if(fd < 0) {
        printf("open failed, error:%d
", errno);
        return -1;
    }

    while(1) {
        memset(&ev, 0, sizeof(struct input_event));

        ret = read(fd, &ev, sizeof(struct input_event));
        if (ret != sizeof(struct input_event)) {
            printf("read error, ret: %d
", ret);
            break;
        }

        if (ev.type == EV_KEY) {
            printf("--------------------
");
            printf("type = %u.
", ev.type); /*     ，EV_KEY    */
            printf("code = %u.
", ev.code); /*     ，/usr/include/linux/input-event-codes.h        ，  KEY_ESC  esc   */
            printf("value = %u.
", ev.value); /*          ，0  、1  、2   */
        }
    }

    close(fd);
    return ret;
}

#include 
#include 
#include 

int get_key_board_from_termios()
{
    int key_value;
    struct termios new_config;
    struct termios old_config;

    tcgetattr(0, &old_config);
    new_config = old_config;
    new_config.c_lflag &= ~(ICANON | ECHO);
    tcsetattr(0, TCSANOW, &new_config);

    key_value = getchar();

    tcsetattr(0, TCSANOW, &old_config);

    printf("key_value: %d
", key_value);
    return 0;
}