Linux作業系統獲取網路卡初始的MAC地址

#include

#include

#include

#include

#include

#include

#include

int main()

{

    int fd;

    struct ifreq ifr;

    fd = socket(AF_INET, SOCK_DGRAM, 0);

    ifr.ifr_addr.sa_family = AF_INET;

    strncpy(ifr.ifr_name, "eth0", IFNAMSIZ-1);

    ioctl(fd, SIOCGIFHWADDR, &ifr);

    close(fd);

    printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",

          (unsigned char)ifr.ifr_hwaddr.sa_data[0],

          (unsigned char)ifr.ifr_hwaddr.sa_data[1],

          (unsigned char)ifr.ifr_hwaddr.sa_data[2],

          (unsigned char)ifr.ifr_hwaddr.sa_data[3],

          (unsigned char)ifr.ifr_hwaddr.sa_data[4],

          (unsigned char)ifr.ifr_hwaddr.sa_data[5]);

  return 0;

}