UnixsockTips

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1. 개요
2. MAC 주소 알아내기
3. 링크

1 개요

음... BerkeleySocketTips 로 이름을 바꿀까...

2 MAC 주소 알아내기

#include <stdio.h>
#include <net/if.h>
#include <linux/ioctl.h>
#include <linux/sockios.h>
#include <sys/types.h>
#include <sys/socket.h>

int main()
{
    struct sockaddr_in *inteface;
    static struct sockaddr *sa;
    struct aftype *af;
    static struct ifreq ifr;
    int skfd,i=0;
    u_char *ptr;
    if((skfd = socket(AF_INET,SOCK_DGRAM,0)) < 0)
    {
        perror("Socket);
        exit(-1);
    }
    strcpy(ifr.ifr_name, eth0);
    if (ioctl(skfd, SIOCGIFHWADDR, &ifr) != 0) 
    {
        perror("ioctl SIOCSIFHWADDR");
        exit(-1);
    }
    sa=(struct sockaddr*)malloc(sizeof(struct sockaddr));
    memcpy((char *) sa,(char *) &(ifr.ifr_hwaddr),sizeof(struct sockaddr));
    ptr=sa->sa_data;
    for(i=0;i<6;i++,*ptr++)
    {
        printf("%x",*ptr);
        if(i!=5)
            printf(":");
    }   
    printf("\n"); 
    return (0);
}

3 링크

• Five pitfalls of Linux sockets programming
  
• Boost socket performance on Linux
  

• CategoryNetworkProgramming