include/sys/uuid.h
/*	$NetBSD: uuid.h,v 1.5 2008/11/18 14:01:03 joerg Exp $	*/

/*
 * Copyright (c) 2002 Marcel Moolenaar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: /repoman/r/ncvs/src/sys/sys/uuid.h,v 1.3 2003/05/31 16:47:07 phk Exp $
 */

#ifndef _SYS_UUID_H_
#define	_SYS_UUID_H_

#include <sys/cdefs.h>

/* Length of a node address (an IEEE 802 address). */
#define	_UUID_NODE_LEN		6

/* Length of a printed UUID. */
#define	_UUID_STR_LEN		38

/*
 * See also:
 *      http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
 *      http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
 *
 * A DCE 1.1 compatible source representation of UUIDs.
 */
struct uuid {
	uint32_t	time_low;
	uint16_t	time_mid;
	uint16_t	time_hi_and_version;
	uint8_t		clock_seq_hi_and_reserved;
	uint8_t		clock_seq_low;
	uint8_t		node[_UUID_NODE_LEN];
};

#ifdef _KERNEL

#define	UUID_NODE_LEN	_UUID_NODE_LEN
#define	UUID_STR_LEN	_UUID_STR_LEN

int	uuid_snprintf(char *, size_t, const struct uuid *);
int	uuid_printf(const struct uuid *);
void	uuid_dec_be(const void *, struct uuid *);
void	uuid_dec_le(const void *, struct uuid *);
void	uuid_enc_be(void *, const struct uuid *);
void	uuid_enc_le(void *, const struct uuid *);
void	uuid_init(void);
int	uuidgen(struct uuid *, int);

#else	/* _KERNEL */

typedef struct uuid uuid_t;

__BEGIN_DECLS
int	uuidgen(struct uuid *, int);
__END_DECLS

#endif	/* _KERNEL */

#endif /* _SYS_UUID_H_ */
