disklabel_dkcksum.c revision 1.2.2.2
1 1.2.2.2 cyber /* $NetBSD: disklabel_dkcksum.c,v 1.2.2.2 2003/10/25 03:32:21 cyber Exp $ */ 2 1.2.2.2 cyber 3 1.2.2.2 cyber /*- 4 1.2.2.2 cyber * Copyright (c) 1991, 1993 5 1.2.2.2 cyber * The Regents of the University of California. All rights reserved. 6 1.2.2.2 cyber * 7 1.2.2.2 cyber * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 cyber * modification, are permitted provided that the following conditions 9 1.2.2.2 cyber * are met: 10 1.2.2.2 cyber * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 cyber * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 cyber * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 cyber * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 cyber * documentation and/or other materials provided with the distribution. 15 1.2.2.2 cyber * 3. All advertising materials mentioning features or use of this software 16 1.2.2.2 cyber * must display the following acknowledgement: 17 1.2.2.2 cyber * This product includes software developed by the University of 18 1.2.2.2 cyber * California, Berkeley and its contributors. 19 1.2.2.2 cyber * 4. Neither the name of the University nor the names of its contributors 20 1.2.2.2 cyber * may be used to endorse or promote products derived from this software 21 1.2.2.2 cyber * without specific prior written permission. 22 1.2.2.2 cyber * 23 1.2.2.2 cyber * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 1.2.2.2 cyber * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.2.2.2 cyber * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.2.2.2 cyber * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 1.2.2.2 cyber * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 1.2.2.2 cyber * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 1.2.2.2 cyber * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.2.2.2 cyber * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.2.2.2 cyber * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.2.2.2 cyber * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.2.2.2 cyber * SUCH DAMAGE. 34 1.2.2.2 cyber */ 35 1.2.2.2 cyber 36 1.2.2.2 cyber #include <sys/cdefs.h> 37 1.2.2.2 cyber #ifndef lint 38 1.2.2.2 cyber #if 0 39 1.2.2.2 cyber static char sccsid[] = "@(#)dkcksum.c 8.1 (Berkeley) 6/5/93"; 40 1.2.2.2 cyber #else 41 1.2.2.2 cyber __RCSID("$NetBSD: disklabel_dkcksum.c,v 1.2.2.2 2003/10/25 03:32:21 cyber Exp $"); 42 1.2.2.2 cyber #endif 43 1.2.2.2 cyber #endif /* not lint */ 44 1.2.2.2 cyber 45 1.2.2.2 cyber #include <sys/types.h> 46 1.2.2.2 cyber #include <sys/disklabel.h> 47 1.2.2.2 cyber 48 1.2.2.2 cyber #include <util.h> 49 1.2.2.2 cyber 50 1.2.2.2 cyber u_short 51 1.2.2.2 cyber disklabel_dkcksum(struct disklabel *lp) 52 1.2.2.2 cyber { 53 1.2.2.2 cyber u_short *start, *end; 54 1.2.2.2 cyber u_short sum; 55 1.2.2.2 cyber 56 1.2.2.2 cyber sum = 0; 57 1.2.2.2 cyber start = (u_short *)lp; 58 1.2.2.2 cyber end = (u_short *)&lp->d_partitions[lp->d_npartitions]; 59 1.2.2.2 cyber while (start < end) 60 1.2.2.2 cyber sum ^= *start++; 61 1.2.2.2 cyber return (sum); 62 1.2.2.2 cyber } 63
Indexes created Fri Oct 03 02:09:57 GMT 2025