ubuntu|Linux下C语言获取所有网卡MAC地址的代码计算机网络|linux

【ubuntu|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

原文：http://www.open-open.com/code/view/1432215294567

#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