在linux下 擷取本機MAC地址的函數

//擷取本機MAC地址函數QString GetLocalMac()<br />{<br />int sock_mac;</p><p>struct ifreq ifr_mac;<br />char mac_addr[30]; </p><p>sock_mac = socket( AF_INET, SOCK_STREAM, 0 );<br />if( sock_mac == -1)<br />{<br />perror("create socket falise...mac/n");<br />return "";<br />}</p><p>memset(&ifr_mac,0,sizeof(ifr_mac));<br />strncpy(ifr_mac.ifr_name, "eth0", sizeof(ifr_mac.ifr_name)-1); </p><p>if( (ioctl( sock_mac, SIOCGIFHWADDR, &ifr_mac)) < 0)<br />{<br />printf("mac ioctl error/n");<br />return "";<br />}</p><p>sprintf(mac_addr,"%02x%02x%02x%02x%02x%02x",<br />(unsigned char)ifr_mac.ifr_hwaddr.sa_data[0],<br />(unsigned char)ifr_mac.ifr_hwaddr.sa_data[1],<br />(unsigned char)ifr_mac.ifr_hwaddr.sa_data[2],<br />(unsigned char)ifr_mac.ifr_hwaddr.sa_data[3],<br />(unsigned char)ifr_mac.ifr_hwaddr.sa_data[4],<br />(unsigned char)ifr_mac.ifr_hwaddr.sa_data[5]);</p><p>printf("local mac:%s /n",mac_addr); </p><p>close( sock_mac );<br />return QString( mac_addr );<br />}