1/* $NetBSD: vtoc.c,v 1.3 2007/02/22 05:31:53 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: vtoc.c,v 1.3 2007/02/22 05:31:53 thorpej Exp $"); 34 35#include <sys/types.h> 36#include <sys/systm.h> 37 38#if !defined(_KERNEL) && defined(_STANDALONE) 39#include <lib/libsa/stand.h> 40#include <lib/libkern/libkern.h> 41#endif 42 43#ifdef VTOC_DEBUG 44#define DPRINTF(fmt, args...) printf(fmt, ##args) 45#else 46#define DPRINTF(arg...) ((void)0) 47#endif 48 49#include <machine/sector.h> 50#include <machine/vtoc.h> 51 52#ifdef VTOC_DEBUG 53void vtoc_print_partition_table(const struct ux_partition *); 54#endif /* VTOC_DEBUG */ 55 56bool 57vtoc_sector(void *rwops, struct vtoc_sector *vtoc, int start) 58{ 59 60 if (!sector_read(rwops, (void *)vtoc, start + VTOC_SECTOR)) 61 return false; 62 63 if (!vtoc_sanity(vtoc)) 64 return false; 65 66 return true; 67} 68 69const struct ux_partition * 70vtoc_find_bfs(const struct vtoc_sector *vtoc) 71{ 72 int i; 73 74 if (!vtoc_valid(vtoc)) { 75 printf("invalid VTOC\n"); 76 return 0; 77 } 78 79 for (i = 0; i < vtoc->npartitions; i++) 80 if (vtoc->partition[i].tag == VTOC_TAG_STAND) 81 break; 82 83 if (i == vtoc->npartitions) { 84 printf("no bfs partition found.\n"); 85 return 0; 86 } 87 88 return &vtoc->partition[i]; 89} 90 91bool 92vtoc_valid(const struct vtoc_sector *vtoc) 93{ 94 95 return (vtoc->magic == VTOC_MAGIC) && (vtoc->version == VTOC_VERSION); 96} 97 98bool 99vtoc_sanity(const struct vtoc_sector *vtoc) 100{ 101 102 if (!vtoc_valid(vtoc)) { 103 DPRINTF("Invalid VTOC.\n"); 104 return false; 105 } 106 107 DPRINTF("[VTOC] (%d byte)\n", sizeof *vtoc); 108 DPRINTF("Bootinfo = %08x %08x %08x\n", 109 vtoc->bootinfo[0], vtoc->bootinfo[1], vtoc->bootinfo[2]); 110 DPRINTF("Magic = %08x\n", vtoc->magic); 111 DPRINTF("Version = %d\n", vtoc->version); 112 DPRINTF("Volume = %s\n", vtoc->volume); 113 DPRINTF("Sector size = %d\n", vtoc->sector_size_byte); 114 DPRINTF("# of partitions = %d\n", vtoc->npartitions); 115#ifdef VTOC_DEBUG 116 vtoc_print_partition_table(vtoc->partition); 117#endif 118 return true; 119} 120 121#ifdef VTOC_DEBUG 122void 123vtoc_print_partition_table(const struct ux_partition *p) 124{ 125 int i; 126 127 DPRINTF(" Partition Tag Flags Start Count Last\n"); 128 for (i = 0; i < 16; i++, p++) { 129 DPRINTF(" %x %d %02x %8d %8d %8d\n", 130 i, p->tag, p->flags, p->start_sector, p->nsectors, 131 p->start_sector + p->nsectors - 1); 132 } 133} 134#endif /* VTOC_DEBUG */ 135