🚀 go-pugleaf

Here is a program that prints out my ethernet address on my DECstation 3100 running ULTRIX 3.1:


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

extern int errno;

main(ac, av)
    int ac;
    char *av [];
{
    int s;
    char *line = "------------------------------------";
    char device [IFNAMSIZ+1];

    /* structure used to query de and qe for physical addresses

        struct ifdevea {
            char    ifr_name[IFNAMSIZ];
            char    default_pa[6];
            char    current_pa[6];
        };
    */
    struct ifdevea hw_addr;

    s = socket (AF_INET, SOCK_DGRAM, 0);

    if (s < 0)  {
        perror ("socket:");
        exit (3);
    }

    if (ac > 1 && strlen (av [1]) <= IFNAMSIZ)
        strcpy (&hw_addr.ifr_name [0], av [1]);
    else    strcpy (&hw_addr.ifr_name [0], "se0");

    if (ioctl(s, SIOCRPHYSADDR, (caddr_t) &hw_addr) < 0) {
        perror ("ioctl: SIOCRPHYSADDR");
        close(s);
        exit (1);
    }

    printf ("\n%s\n", line);
    printf ("addresses for %s :\n", &hw_addr.ifr_name [0]);
    printf ("%s\n", line);
    print_addr ("hardware-address", &hw_addr.default_pa [0]);
    print_addr ("current-address ", &hw_addr.current_pa [0]);
    printf ("%s\n", line);
    close(s);
}

print_addr (what, ether_addr)
    char *what, *ether_addr;
    {
    printf ("%s = %02x-%02x-%02x-%02x-%02x-%02x\n", what,
                ether_addr [0] & 0xff,
                ether_addr [1] & 0xff,
                ether_addr [2] & 0xff,
                ether_addr [3] & 0xff,
                ether_addr [4] & 0xff,
                ether_addr [5] & 0xff);
    }






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|                             |                           |
| Joe Gabriel                 |  Digital Equipment Corp.  |
| Laboratory Data Prodcuts    |  Technical Consulting     |
| Four Results Way            |  Marlboro, MA 01752-9122  |
| gabriel@ldpmax.enet.dec.com |    (508) 467-5055         |
|                             |                           |
|                  % ls -l disclaimer                     |
|  Jan 01 00:00 disclaimer -> standard/one/we/always/see  |
|                                                         |
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