xref: /illumos-gate/usr/src/cmd/hostid/hostid.c (revision f012ee0c3db17469b492c2cf757226f3d7b1ebbc)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #include <stdio.h>
27 #include <unistd.h>
28 #include <stdlib.h>
29 #include <sys/systeminfo.h>
30 
31 int
32 main(void)
33 {
34 	long hostval;
35 
36 	if ((unsigned int)(hostval = gethostid()) == HW_INVALID_HOSTID) {
37 		(void) fprintf(stderr, "bad hostid format\n");
38 		exit(1);
39 	}
40 	(void) printf("%08lx\n", (unsigned long)hostval);
41 	return (0);
42 }
43