linux獲取本機網絡卡ip位址

#include ;

#include ;

#include ;

#include ;

#include ;

#include ;

#include ;

#include ;

#include ;

#define eth_name "eth0"

int main()

strncpy(ifr.ifr_name, eth_name, ifnamsiz);

ifr.ifr_name[ifnamsiz - 1] = 0;

if (ioctl(sock, siocgifaddr, &ifr) < 0)

memcpy(&sin, &ifr.ifr_addr, sizeof(sin));

fprintf(stdout, "eth0: %s\n", inet_ntoa(sin.sin_addr));

return 0;

上面的**需要在巨集裡指定要獲取的網絡卡名。

下面的**可以獲取到所有的網絡卡資訊。

#include #include #include #include #include #include #include #include #ifdef solaris 

#include #endif
#define maxinte***ces 16
main (argc, argv) 
register int argc; 
register char *argv; 
} else 
//判斷網絡卡狀態 
if (buf[int***ce].ifr_flags & iff_up) 
else 
//獲取當前網絡卡的ip位址 
if (!(ioctl (fd, siocgifaddr, (char *) &buf[int***ce]))) 
else 
/* this section can't get hardware address,i don't know whether the reason is module driver*/ 
#ifdef solaris 
//獲取mac位址
arp.arp_pa.sa_family = af_inet; 
arp.arp_ha.sa_family = af_inet; 
((struct sockaddr_in*)&arp.arp_pa)->sin_addr.s_addr=((struct sockaddr_in*)(&buf[int***ce].ifr_addr))->sin_addr.s_addr; 
if (!(ioctl (fd, siocgarp, (char *) &arp))) 
#else 
#if 0 
/*get hw address of the net card */ 
if (!(ioctl (fd, siocgenaddr, (char *) &buf[int***ce]))) 
#endif 
if (!(ioctl (fd, siocgifhwaddr, (char *) &buf[int***ce]))) 
#endif
else 
} //while
} else 
perror ("cpm: ioctl");
} else 
perror ("cpm: socket");
close (fd); 
return retn; 
}

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