如何使用C程序在linux中获取接口的mac地址？

Z时代
2024-01-10
分类：问答

我想在Linux中使用C程序找到mac地址。怎么做？

回答：

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）

/*
 * gethwaddr.c
 *
 * Demonstrates retrieving hardware address of adapter using ioctl()
 *
 * Author: Ben Menking <bmenking@highstream.net>
 *
 */
#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;
}