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First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

/*	$OpenBSD: defs.h,v 1.7 2008/06/26 05:42:21 ray Exp $	*/
/*	$NetBSD: defs.h,v 1.2 1996/02/28 01:13:20 thorpej Exp $	*/

/*-
 * Copyright (c) 1996 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 REGENTS OR CONTRIBUTORS 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.
 */

#undef BUFSIZE
#define BUFSIZE		1024

#define IO_READ		0
#define IO_WRITE	1

#define MAXIMUM(a, b)	((a) > (b) ? (a) : (b))

/*
 * Misc. location declarations.
 */
#define EE_SIZE			0x500
#define EE_WC_LOC		0x04
#define EE_CKSUM_LOC		0x0c
#define EE_HWUPDATE_LOC		0x10
#define EE_BANNER_ENABLE_LOC	0x20

/*
 * Keyword table entry.  Contains a pointer to the keyword, the 
 * offset into the prom where the value lives, and a pointer to
 * the function that handles that value.
 */
struct	keytabent {
	char	*kt_keyword;		/* keyword for this entry */
	u_int	kt_offset;		/* offset into prom of value */
	void	(*kt_handler)(struct keytabent *, char *);
					/* handler function for this entry */
};

/*
 * String-value table entry.  Maps a string to a numeric value and
 * vice-versa.
 */
struct	strvaltabent {
	char	*sv_str;		/* the string ... */
	u_char	sv_val;			/* ... and the value */
};

/*
 * This is an entry in a table which describes a set of `exceptions'.
 * In other words, these are Openprom fields that we either can't
 * `just print' or don't know how to deal with.
 */
struct	extabent {
	char	*ex_keyword;		/* keyword for this entry */
	void	(*ex_handler)(struct extabent *, struct opiocdesc *, char *);
					/* handler function for this entry */
};

/* Sun 3/4 EEPROM handlers. */
void	ee_hwupdate(struct keytabent *, char *);
void	ee_num8(struct keytabent *, char *);
void	ee_num16(struct keytabent *, char *);
void	ee_screensize(struct keytabent *, char *);
void	ee_truefalse(struct keytabent *, char *);
void	ee_bootdev(struct keytabent *, char *);
void	ee_kbdtype(struct keytabent *, char *);
void	ee_constype(struct keytabent *, char *);
void	ee_diagpath(struct keytabent *, char *);
void	ee_banner(struct keytabent *, char *);
void	ee_notsupp(struct keytabent *, char *);

/* Sun 3/4 EEPROM checksum routines. */
u_char	ee_checksum(u_char *, size_t);
void	ee_updatechecksums(void);
void	ee_verifychecksums(void);

/* OpenPROM handlers. */
char	*op_handler(char *, char *);
void	 op_dump(void);
void	 op_tree(void);