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Linux下C语言获取所有网卡MAC地址的代码

2017-04-21

Linux下C语言获取所有网卡MAC地址的代码。

Linux下C语言获取所有网卡MAC地址的代码

#include

#include

#include

#include

#include

int main()

{

struct ifreq ifr;

struct ifconf ifc;

char buf[2048];

int success = 0;

int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);

if (sock == -1) {

printf("socket error\n");

return -1;

}

ifc.ifc_len = sizeof(buf);

ifc.ifc_buf = buf;

if (ioctl(sock, SIOCGIFCONF, &ifc) == -1) {

printf("ioctl error\n");

return -1;

}

struct ifreq* it = ifc.ifc_req;

const struct ifreq* const end = it + (ifc.ifc_len / sizeof(struct ifreq));

char szMac[64];

int count = 0;

for (; it != end; ++it) {

strcpy(ifr.ifr_name, it->ifr_name);

if (ioctl(sock, SIOCGIFFLAGS, &ifr) == 0) {

if (! (ifr.ifr_flags & IFF_LOOPBACK)) { // don't count loopback

if (ioctl(sock, SIOCGIFHWADDR, &ifr) == 0) {

count ++ ;

unsigned char * ptr ;

ptr = (unsigned char *)&ifr.ifr_ifru.ifru_hwaddr.sa_data[0];

snprintf(szMac,64,"%02X:%02X:%02X:%02X:%02X:%02X",*ptr,*(ptr+1),*(ptr+2),*(ptr+3),*(ptr+4),*(ptr+5));

printf("%d,Interface name : %s , Mac address : %s \n",count,ifr.ifr_name,szMac);

}

}

}else{

printf("get mac info error\n");

return -1;

}

}

}

执行结果如下:

1,Interface name : eth0 , Mac address : 90:B1:1D:87:13:75

2,Interface name : virtac , Mac address : 52:54:00:96:E0:BF

3,Interface name : map , Mac address : 52:54:00:F2:FE:9C

4,Interface name : poi , Mac address : 52:54:00:1B:97:82

5,Interface name : vnet1 , Mac address : 52:54:00:05:14:E3

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