Macchanger-查看Linux的当前临时有效的mac地址和永久物理的mac地址

#macchanger -s eth0可以获得mac的真实mac地址 Current MAC: 00:07:3e:90:45:92 (China Great-Wall Computer Shenzhen Co., Ltd.) Permanent MAC: 00:07:3e:90:45:7f (China Great-Wall Computer Shenzhen Co., Ltd.) 

#include "maclist.h" 
#include "netinfo.h" //ljc 18/11/21 查看mac地址的原始值和临时值 
int Get_CP_Mac(char *device_name, char *Current_Mac, char *Permanent_Mac) 
{ 
    if((device_name == NULL) || (Current_Mac == NULL) || (Permanent_Mac == NULL)) 
    { 
        printf("*Get_CP_Mac start init failed!!!!\n"); return EXIT_ERROR; 
    } 
    net_info_t *net; 
    mac_t *mac; 
    mac_t *mac_permanent; /* Read the MAC lists */ 
    if (mc_maclist_init() < 0) 
    { printf("*MAC lists init failed!!!!"); return EXIT_ERROR; } 
    printf("*device_name :%s\n\n",device_name); 
    if ((net = mc_net_info_new(device_name)) == NULL) 
    { printf("*mc_net_info failed!!!!"); return EXIT_ERROR; } 
    printf("*+++++++++malloc++++ net %p\n",net); 
    mac = mc_net_info_get_mac(net); 
    printf("*+++++++++malloc++++ mac %p\n",mac); 
    mac_permanent = mc_net_info_get_permanent_mac(net); 
    printf("*+++++++++malloc++++ mac_permanent %p\n",mac_permanent); //获得临时mac地址 
       int is_wireless; 
       is_wireless = mc_maclist_is_wireless(mac); 
    mc_mac_into_string (mac, Current_Mac); //获得永久mac地址 
    is_wireless = mc_maclist_is_wireless(mac_permanent); 
    mc_mac_into_string (mac_permanent, Permanent_Mac); 
    printf("temp——mac:%s\n", Current_Mac); 
    printf("Permanent——mac:%s\n", Permanent_Mac);
    printf("\n*1---free--- net %p\n",net); 
    mc_net_info_free (net); 
    printf("*2---free--- mac %p\n",mac); 
    mc_mac_free (mac); 
    printf("*3---free--- mac_permanent %p\n\n",mac_permanent); 
    mc_mac_free (mac_permanent); 
    mc_maclist_free(); 
    return EXIT_OK; 
} //ljc 18/11/21 

//(test code)
char Current_Mac[MAC_LEN]; 
char Permanent_Mac[MAC_LEN]; 
int Ret = Get_CP_Mac(mac_Info_name,Current_Mac, Permanent_Mac); 
if(Ret == EXIT_ERROR) 
{ return -1; } 
printf("temp——mac:%s\n", Current_Mac); 
printf("Permanent——mac:%s\n", Permanent_Mac);