1139749Simp/* $NetBSD: check.c,v 1.5 2008/04/28 20:23:15 martin Exp $ */ 239217Sgibbs 339217Sgibbs/* 439217Sgibbs * Copyright (c) 1999 The NetBSD Foundation, Inc. 539217Sgibbs * All rights reserved. 655945Sgibbs * 755945Sgibbs * This code is derived from software contributed to The NetBSD Foundation 855945Sgibbs * by Julian Coleman, Waldi Ravens and Leo Weppelman. 955945Sgibbs * 1055945Sgibbs * Redistribution and use in source and binary forms, with or without 1155945Sgibbs * modification, are permitted provided that the following conditions 1255945Sgibbs * are met: 1355945Sgibbs * 1. Redistributions of source code must retain the above copyright 1455945Sgibbs * notice, this list of conditions and the following disclaimer. 1555945Sgibbs * 2. Redistributions in binary form must reproduce the above copyright 1657679Sgibbs * notice, this list of conditions and the following disclaimer in the 1739217Sgibbs * documentation and/or other materials provided with the distribution. 1839217Sgibbs * 1957679Sgibbs * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2057679Sgibbs * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2157679Sgibbs * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2257679Sgibbs * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 2357679Sgibbs * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2457679Sgibbs * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2539217Sgibbs * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2639217Sgibbs * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2739217Sgibbs * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2857679Sgibbs * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2957679Sgibbs * POSSIBILITY OF SUCH DAMAGE. 3055945Sgibbs */ 3139217Sgibbs 3239217Sgibbs#include "privahdi.h" 3339217Sgibbs 3439217Sgibbs/* Partitions which have errors */ 3539217Sgibbsint ahdi_errp1; 3639217Sgibbsint ahdi_errp2; 3739217Sgibbs 3839217Sgibbs/* 3939217Sgibbs * Check partitions for consistency : 4039217Sgibbs * GEM vs BGM 4139217Sgibbs * Start sector > 2 4239217Sgibbs * End sector < secperunit 4339217Sgibbs * other partition overlap 4455945Sgibbs * auxiliary root overlap 4539217Sgibbs * Number of partitions in root/auxiliary root 4639217Sgibbs */ 4739217Sgibbsint 4839217Sgibbsahdi_checklabel (struct ahdi_ptable *ptable) 4939217Sgibbs{ 5039217Sgibbs int i, j, rcount, acount; 5139217Sgibbs u_int32_t i_end, j_end; 5239217Sgibbs 5339217Sgibbs ahdi_errp1 = -1; 5439217Sgibbs ahdi_errp2 = -1; 5539217Sgibbs 5639217Sgibbs if (ptable->nparts < 1 || ptable->nparts > MAXPARTITIONS) 5739217Sgibbs return (-2); 5839217Sgibbs 5939217Sgibbs rcount = 0; 6039217Sgibbs acount = 0; 61119418Sobrien 62119418Sobrien for (i = 0; i < ptable->nparts; i++) { 63119418Sobrien 6439217Sgibbs /* GEM vs BGM */ 6539217Sgibbs if (ptable->parts[i].size > 32768) { 6639217Sgibbs if (AHDI_MKPID (ptable->parts[i].id[0], 67117126Sscottl ptable->parts[i].id[1], ptable->parts[i].id[2]) 68129879Sphk == AHDI_PID_GEM) { 69117126Sscottl ahdi_errp1 = i; 7039217Sgibbs return (-3); 7139217Sgibbs } 7259082Snyan } else { 7359082Snyan if (AHDI_MKPID (ptable->parts[i].id[0], 7459082Snyan ptable->parts[i].id[1], ptable->parts[i].id[2]) 7539217Sgibbs == AHDI_PID_BGM) { 76119277Simp ahdi_errp1 = i; 77119277Simp return (-3); 7839217Sgibbs } 7939217Sgibbs } 8039217Sgibbs 81119690Sjhb /* Need 2 free sectors at start for root and bad sector list */ 82119690Sjhb if (ptable->parts[i].start < 2) { 8339217Sgibbs ahdi_errp1 = i; 8439217Sgibbs return (-4); 8539217Sgibbs } 8655945Sgibbs 8739217Sgibbs i_end = ptable->parts[i].start + ptable->parts[i].size - 1; 8839217Sgibbs 8939217Sgibbs /* Check partition does not extend past end of disk */ 9039217Sgibbs if (i_end >= ptable->secperunit) { 9139217Sgibbs ahdi_errp1 = i; 9239217Sgibbs return (-5); 9359082Snyan } 9459082Snyan 9539217Sgibbs for (j = i + 1; j < ptable->nparts; j++) { 9639217Sgibbs /* Check for overlap with other partitions */ 9739217Sgibbs j_end = ptable->parts[j].start + ptable->parts[j].size 9839217Sgibbs - 1; 99155319Simp if ((ptable->parts[j].start >= ptable->parts[i].start 10042012Sgibbs && ptable->parts[j].start <= i_end) || 10142012Sgibbs (j_end >= ptable->parts[i].start && 10242012Sgibbs j_end <= i_end)) { 10339217Sgibbs ahdi_errp1 = i; 10459082Snyan ahdi_errp2 = j; 10559082Snyan return (-6); 10639217Sgibbs } 10759082Snyan /* Check number of partitions in auxiliary root */ 10855945Sgibbs if (ptable->parts[i].root && 10959082Snyan ptable->parts[i].root == ptable->parts[j].root) { 11039217Sgibbs ahdi_errp1 = i; 11159082Snyan ahdi_errp2 = j; 112143164Simp return (-9); 11339217Sgibbs } 11459082Snyan } 115143164Simp 11655945Sgibbs for (j = i; j < ptable->nparts; j++) 11759082Snyan /* Check for overlap with auxiliary root(s) */ 11859082Snyan if (ptable->parts[j].root >= ptable->parts[i].start && 11959082Snyan ptable->parts[j].root <= i_end) { 120143164Simp ahdi_errp1 = i; 12159082Snyan return (-7); 12259082Snyan } 12359082Snyan 124143164Simp /* Count partitions in root/auxiliary roots */ 12559082Snyan if (ptable->parts[i].root) 12659082Snyan acount++; 127143164Simp else 12859082Snyan rcount++; 12939217Sgibbs 13039217Sgibbs } 13139217Sgibbs /* Check number of partitions in root sector */ 13239217Sgibbs if (acount) 13359082Snyan rcount++; 13439217Sgibbs if (rcount > 4) 13539217Sgibbs return (-8); 13659082Snyan else 13759082Snyan return (1); 13839217Sgibbs} 13939217Sgibbs