Reading Etherent address from C

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2 total messages Started by Christopher R. Zach Sat, 08 Aug 1992 14:15

#503

Author: Christopher R. Zach
Date: Sat, 08 Aug 1992 14:15

9 lines
762 bytes

The subject says it all: How does one get the Ethernet Hardware address into
a C program?

For that matter, is there any man pages that deal with handling the ethernet 
drivers? I didn't see anything in the NextDev manuals.

Pls reply to cz@silver.lcs.mit.edu, and I will post the results.

Chris Zach

Re: Reading Etherent address from C

#505

Author: Fredrik Nyman
Date: Sat, 08 Aug 1992 15:04

24 lines
1125 bytes

cz@silver.lcs.mit.edu (Christopher R. Zach) writes:

>The subject says it all: How does one get the Ethernet Hardware address into
>a C program?

The program below should do what you want.
And no, I didn't write it, I picked it up on the net in one of
the Sun newsgroups (I think) a couple months ago.  Sorry I can't
give credit where it's due,

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
main()
{       char hname[65];
        struct ether_addr ea;
        gethostname(hname, sizeof(hname));
        ether_hostton(hname, &ea);
        printf("%s\n", ether_ntoa(&ea));
}

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