如何使用C程序在linux中获取接口的mac地址？

通过Google搜索1分钟：（我自己尚未对其进行测试，此刻我正在Windows机器上工作）

#include <stdio.h>#include <sys/ioctl.h>#include <sys/types.h>    #include <sys/socket.h>#include <net/if.h>int main( int argc, char *argv[] ){    int s;    struct ifreq buffer;    s = socket(PF_INET, SOCK_DGRAM, 0);    memset(&buffer, 0x00, sizeof(buffer));    strcpy(buffer.ifr_name, "eth0");    ioctl(s, SIOCGIFHWADDR, &buffer);    close(s);    for( s = 0; s < 6; s++ )    {        printf("%.2X ", (unsigned char)buffer.ifr_hwaddr.sa_data[s]);    }    printf("n");    return 0;}