zfs/lib/libspl/include/sys/systeminfo.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _LIBSPL_SYS_SYSTEMINFO_H
#define	_LIBSPL_SYS_SYSTEMINFO_H

#define	HOSTID_MASK		0xFFFFFFFF
#define	HW_INVALID_HOSTID	0xFFFFFFFF	/* an invalid hostid */
#define	HW_HOSTID_LEN		11		/* minimum buffer size needed */
						/* to hold a decimal or hex */
						/* hostid string */

unsigned long get_system_hostid(void);

#endif