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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * Portions of this source code were derived from Berkeley 4.3 BSD 32 * under license from the Regents of the University of California. 33 */ 34 35 #include "lint.h" 36 #include <sys/types.h> 37 #include <sys/systeminfo.h> 38 #include <stdlib.h> 39 40 long 41 gethostid(void) 42 { 43 char name[HW_HOSTID_LEN], *end; 44 unsigned long hostid; 45 46 /* 47 * HW_INVALID_HOSTID must be cast to an int to ensure that it's sign 48 * extended to 64 bits in 64-bit builds. 49 */ 50 if (sysinfo(SI_HW_SERIAL, name, sizeof (name)) == -1) 51 return ((int)HW_INVALID_HOSTID); 52 hostid = strtoul(name, &end, 10); 53 if (end == name) 54 return ((int)HW_INVALID_HOSTID); 55 return ((long)hostid); 56 } 57