GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: sbin/newfs/../disklabel/dkcksum.c Lines: 5 5 100.0 %
Date: 2017-11-13 Branches: 2 2 100.0 %

Line Branch Exec Source
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/*	$OpenBSD: dkcksum.c,v 1.8 2009/10/27 23:59:32 deraadt Exp $	*/
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/*	$NetBSD: dkcksum.c,v 1.6 1995/03/18 14:54:42 cgd Exp $	*/
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/*-
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 * Copyright (c) 1991, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/disklabel.h>
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#include <stdio.h>
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#include "extern.h"
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u_short
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dkcksum(struct disklabel *lp)
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{
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	u_short *start, *end;
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	u_short sum = 0;
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	start = (u_short *)lp;
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	end = (u_short *)&lp->d_partitions[lp->d_npartitions];
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	while (start < end)
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		sum ^= *start++;
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	return (sum);
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}