linux用C++，如何用获取网口设备mac地址？

sovian

linux用C++，如何用获取网口设备mac地址？

赚小钱

#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <string.h>
#include <stdio.h>

void dump_macaddress(char* address) {
    printf("%02x", address[0]);
    for (int i = 1; i < 6; i++) {
        printf(":%2x", address[i] & 0xff);
    }
    printf("\n");
}

int main() {
    struct ifreq ifr;
    struct ifconf ifc;
    char buf[1024];

    int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
    if (sock == -1) { /* handle error*/ };

    ifc.ifc_len = sizeof(buf);
    ifc.ifc_buf = buf;
    if (ioctl(sock, SIOCGIFCONF, &ifc) == -1) { /* handle error */ }

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

    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) {
                    dump_macaddress(ifr.ifr_hwaddr.sa_data);
                }
            }
        } else { /* handle error */ }
    }
}

tankrant

请问如何只获取当前本机的MAC地址呢？上面的代码会把全部MAC地址都得到，包括虚拟网卡的地址