Annotation of sys/lib/libsa/disklabel.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: disklabel.c,v 1.5 2003/08/11 06:23:09 deraadt Exp $ */
! 2: /* $NetBSD: disklabel.c,v 1.3 1994/10/26 05:44:42 cgd Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * @(#)disklabel.c 8.1 (Berkeley) 6/11/93
! 33: */
! 34:
! 35: #include <sys/param.h>
! 36: #include <sys/disklabel.h>
! 37: #include "stand.h"
! 38:
! 39: char *
! 40: getdisklabel(const char *buf, struct disklabel *lp)
! 41: {
! 42: struct disklabel *dlp, *elp;
! 43: char *msg = NULL;
! 44:
! 45: elp = (struct disklabel *)(buf + DEV_BSIZE - sizeof(*dlp));
! 46: for (dlp = (struct disklabel *)buf; dlp <= elp;
! 47: dlp = (struct disklabel *)((char *)dlp + sizeof(long))) {
! 48: if (dlp->d_magic != DISKMAGIC || dlp->d_magic2 != DISKMAGIC) {
! 49: if (msg == NULL)
! 50: msg = "no disk label";
! 51: } else if (dlp->d_npartitions > MAXPARTITIONS ||
! 52: dkcksum(dlp) != 0)
! 53: msg = "disk label corrupted";
! 54: else {
! 55: *lp = *dlp;
! 56: msg = NULL;
! 57: break;
! 58: }
! 59: }
! 60: return (msg);
! 61: }
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