Did you say use Inline 'C'? 

#!/usr/bin/perl
use Inline 'C';
get_mac('eth0');
__END__
__C__
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>

void get_mac( char *iface )
{
    int s;
    struct ifreq buffer;
    memset(&buffer, 0x00, sizeof(buffer));
    s = socket(PF_INET, SOCK_DGRAM, 0);
    strcpy(buffer.ifr_name, iface);
    ioctl(s, SIOCGIFHWADDR, &buffer);
    close(s);
    for( s = 0; s < 5; s++ )
        printf("%.2X:", (unsigned char)buffer.ifr_hwaddr.sa_data[s]);
    printf("%.2X\n", (unsigned char)buffer.ifr_hwaddr.sa_data[s]);

}

[download]

Easy to compile it into a command line C widget you call with backtics so you don't need Inline. Just drop the perl part, add int main(int argc,char *argv[]){get_mac(argv[1]);return 0;}, compile it and then call it from perl like $mac = `widget $iface`

cheers

tachyon

In reply to Re: MAC Address of An Interface by tachyon
in thread MAC Address of An Interface by amt

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.