xref: /illumos-gate/usr/src/lib/libc/port/gen/gethostid.c (revision 5679c89f)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57257d1b4Sraf  * Common Development and Distribution License (the "License").
67257d1b4Sraf  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217257d1b4Sraf 
227c478bd9Sstevel@tonic-gate /*
23*5679c89fSjv  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
287c478bd9Sstevel@tonic-gate /*	All Rights Reserved  	*/
297c478bd9Sstevel@tonic-gate 
307c478bd9Sstevel@tonic-gate /*
317c478bd9Sstevel@tonic-gate  * Portions of this source code were derived from Berkeley 4.3 BSD
327c478bd9Sstevel@tonic-gate  * under license from the Regents of the University of California.
337c478bd9Sstevel@tonic-gate  */
347c478bd9Sstevel@tonic-gate 
357257d1b4Sraf #include "lint.h"
367c478bd9Sstevel@tonic-gate #include <sys/types.h>
377c478bd9Sstevel@tonic-gate #include <sys/systeminfo.h>
387c478bd9Sstevel@tonic-gate #include <stdlib.h>
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate long
gethostid(void)417c478bd9Sstevel@tonic-gate gethostid(void)
427c478bd9Sstevel@tonic-gate {
43*5679c89fSjv 	char name[HW_HOSTID_LEN], *end;
44*5679c89fSjv 	unsigned long hostid;
45*5679c89fSjv 
46*5679c89fSjv 	/*
47*5679c89fSjv 	 * HW_INVALID_HOSTID must be cast to an int to ensure that it's sign
48*5679c89fSjv 	 * extended to 64 bits in 64-bit builds.
49*5679c89fSjv 	 */
50*5679c89fSjv 	if (sysinfo(SI_HW_SERIAL, name, sizeof (name)) == -1)
51*5679c89fSjv 		return ((int)HW_INVALID_HOSTID);
527c478bd9Sstevel@tonic-gate 	hostid = strtoul(name, &end, 10);
537c478bd9Sstevel@tonic-gate 	if (end == name)
54*5679c89fSjv 		return ((int)HW_INVALID_HOSTID);
557c478bd9Sstevel@tonic-gate 	return ((long)hostid);
567c478bd9Sstevel@tonic-gate }
57