Go4Expert - finding ip addr from a c prog

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finding ip addr from a c prog

hi all;
i hav written a code in c for finding ip:

Code:

#include<stdlib.h>

#include<stdio.h>

#include<string.h>

#include<sys/ioctl.h>

#include<sys/socket.h>

#include<linux/if.h>

#include<arpa/inet.h>



int main()

{

        struct ifreq ifr;

        char buf[30];

        int fd;

        fd=socket(AF_INET,SOCK_DGRAM,0);

        strcpy(&ifr.if_name,"eth0");

        ioctl(fd,SIOCGIFADDR,&ifr);

        strcpy(buf,inet_ntoa(((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr));

        printf(" %s",buf);

        return 0;

}

but i m getting err as :
ip.c: In function ‘main’:
ip.c:15: error: ‘struct ifreq’ has no member named ‘if_name

tell me wat i m missisng

Re: finding ip addr from a c prog

if_name is not a member of ifreq structure.

The structure contains 128 bytes which has the following members

Code: C

union { 
   sockaddr   ifru_addr 
   sockaddr   ifru_dstaddr 
   sockaddr   ifru_broadaddr 
   short   ifru_flags 
   int   ifru_metric 
   caddr_t   ifru_data 
}