| 1 | /* $Id: fsw_iso9660.h 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * fsw_iso9660.h - ISO9660 file system driver header.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | * ---------------------------------------------------------------------------
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| 36 | * This code is based on:
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| 37 | *
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| 38 | * Copyright (c) 2006 Christoph Pfisterer
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| 39 | *
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| 40 | * Redistribution and use in source and binary forms, with or without
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| 41 | * modification, are permitted provided that the following conditions are
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| 42 | * met:
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| 43 | *
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| 44 | * * Redistributions of source code must retain the above copyright
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| 45 | * notice, this list of conditions and the following disclaimer.
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| 46 | *
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| 47 | * * Redistributions in binary form must reproduce the above copyright
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| 48 | * notice, this list of conditions and the following disclaimer in the
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| 49 | * documentation and/or other materials provided with the
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| 50 | * distribution.
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| 51 | *
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| 52 | * * Neither the name of Christoph Pfisterer nor the names of the
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| 53 | * contributors may be used to endorse or promote products derived
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| 54 | * from this software without specific prior written permission.
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| 55 | *
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| 56 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 57 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 58 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 59 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 60 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 61 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 62 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 63 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 64 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 65 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 66 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 67 | */
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| 68 |
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| 69 | #ifndef _FSW_ISO9660_H_
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| 70 | #define _FSW_ISO9660_H_
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| 71 |
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| 72 | #define VOLSTRUCTNAME fsw_iso9660_volume
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| 73 | #define DNODESTRUCTNAME fsw_iso9660_dnode
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| 74 | #include "fsw_core.h"
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| 75 |
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| 76 |
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| 77 | //! Block size for ISO9660 volumes.
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| 78 | #define ISO9660_BLOCKSIZE 2048
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| 79 | #define ISO9660_BLOCKSIZE_BITS 11
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| 80 | //! Block number where the ISO9660 superblock resides.
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| 81 | #define ISO9660_SUPERBLOCK_BLOCKNO 16
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| 82 |
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| 83 |
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| 84 | #pragma pack(1)
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| 85 |
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| 86 | typedef struct {
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| 87 | fsw_u16 lsb;
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| 88 | fsw_u16 msb;
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| 89 | } iso9660_u16;
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| 90 |
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| 91 | typedef struct {
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| 92 | fsw_u32 lsb;
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| 93 | fsw_u32 msb;
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| 94 | } iso9660_u32;
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| 95 |
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| 96 | #define ISOINT(lsbmsbvalue) ((lsbmsbvalue).lsb)
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| 97 |
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| 98 | struct iso9660_dirrec {
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| 99 | fsw_u8 dirrec_length;
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| 100 | fsw_u8 ear_length;
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| 101 | iso9660_u32 extent_location;
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| 102 | iso9660_u32 data_length;
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| 103 | fsw_u8 recording_datetime[7];
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| 104 | fsw_u8 file_flags;
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| 105 | fsw_u8 file_unit_size;
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| 106 | fsw_u8 interleave_gap_size;
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| 107 | iso9660_u16 volume_sequence_number;
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| 108 | fsw_u8 file_identifier_length;
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| 109 | char file_identifier[1];
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| 110 | };
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| 111 | //#if sizeof(struct fsw_iso9660_dirrec) != 34
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| 112 | //#fail Structure fsw_iso9660_dirrec has wrong size
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| 113 | //#endif
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| 114 |
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| 115 | struct iso9660_volume_descriptor {
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| 116 | fsw_u8 volume_descriptor_type;
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| 117 | char standard_identifier[5];
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| 118 | fsw_u8 volume_descriptor_version;
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| 119 | };
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| 120 |
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| 121 | struct iso9660_primary_volume_descriptor {
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| 122 | fsw_u8 volume_descriptor_type;
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| 123 | char standard_identifier[5];
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| 124 | fsw_u8 volume_descriptor_version;
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| 125 | fsw_u8 unused1;
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| 126 | char system_identifier[32];
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| 127 | char volume_identifier[32];
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| 128 | fsw_u8 unused2[8];
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| 129 | iso9660_u32 volume_space_size;
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| 130 | fsw_u8 unused3[4];
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| 131 | fsw_u8 escape[3];
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| 132 | fsw_u8 unused4[25];
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| 133 | iso9660_u16 volume_set_size;
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| 134 | iso9660_u16 volume_sequence_number;
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| 135 | iso9660_u16 logical_block_size;
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| 136 | iso9660_u32 path_table_size;
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| 137 | fsw_u32 location_type_l_path_table;
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| 138 | fsw_u32 location_optional_type_l_path_table;
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| 139 | fsw_u32 location_type_m_path_table;
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| 140 | fsw_u32 location_optional_type_m_path_table;
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| 141 | struct iso9660_dirrec root_directory;
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| 142 | char volume_set_identifier[128];
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| 143 | char publisher_identifier[128];
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| 144 | char data_preparer_identifier[128];
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| 145 | char application_identifier[128];
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| 146 | char copyright_file_identifier[37];
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| 147 | char abstract_file_identifier[37];
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| 148 | char bibliographic_file_identifier[37];
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| 149 | char volume_creation_datetime[17];
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| 150 | char volume_modification_datetime[17];
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| 151 | char volume_expiration_datetime[17];
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| 152 | char volume_effective_datetime[17];
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| 153 | fsw_u8 file_structure_version;
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| 154 | fsw_u8 reserved1;
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| 155 | fsw_u8 application_use[512];
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| 156 | fsw_u8 reserved2[653];
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| 157 | };
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| 158 | //#if sizeof(struct fsw_iso9660_volume_descriptor) != 2048
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| 159 | //#fail Structure fsw_iso9660_volume_descriptor has wrong size
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| 160 | //#endif
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| 161 |
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| 162 | #pragma pack()
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| 163 |
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| 164 | struct iso9660_dirrec_buffer {
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| 165 | fsw_u32 ino;
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| 166 | struct fsw_string name;
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| 167 | struct iso9660_dirrec dirrec;
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| 168 | char dirrec_buffer[222];
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| 169 | };
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| 170 |
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| 171 |
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| 172 | /**
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| 173 | * ISO9660: Volume structure with ISO9660-specific data.
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| 174 | */
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| 175 |
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| 176 | struct fsw_iso9660_volume {
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| 177 | struct fsw_volume g; //!< Generic volume structure
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| 178 | /*Note: don't move g!*/
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| 179 | int fJoliet;
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| 180 | /*Joliet specific fields*/
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| 181 | int fRockRidge;
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| 182 | /*Rock Ridge specific fields*/
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| 183 | int rr_susp_skip;
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| 184 |
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| 185 | struct iso9660_primary_volume_descriptor *primary_voldesc; //!< Full Primary Volume Descriptor
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| 186 | };
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| 187 |
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| 188 | /**
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| 189 | * ISO9660: Dnode structure with ISO9660-specific data.
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| 190 | */
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| 191 |
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| 192 | struct fsw_iso9660_dnode {
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| 193 | struct fsw_dnode g; //!< Generic dnode structure
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| 194 |
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| 195 | struct iso9660_dirrec dirrec; //!< Fixed part of the directory record (i.e. w/o name)
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| 196 | };
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| 197 |
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| 198 |
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| 199 | struct fsw_rock_ridge_susp_entry
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| 200 | {
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| 201 | fsw_u8 sig[2];
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| 202 | fsw_u8 len;
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| 203 | fsw_u8 ver;
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| 204 | };
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| 205 |
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| 206 | struct fsw_rock_ridge_susp_sp
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| 207 | {
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| 208 | struct fsw_rock_ridge_susp_entry e;
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| 209 | fsw_u8 magic[2];
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| 210 | fsw_u8 skip;
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| 211 | };
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| 212 |
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| 213 | struct fsw_rock_ridge_susp_nm
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| 214 | {
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| 215 | struct fsw_rock_ridge_susp_entry e;
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| 216 | fsw_u8 flags;
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| 217 | fsw_u8 name[1];
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| 218 | };
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| 219 |
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| 220 | #define RR_NM_CONT (1<<0)
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| 221 | #define RR_NM_CURR (1<<1)
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| 222 | #define RR_NM_PARE (1<<2)
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| 223 |
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| 224 | union fsw_rock_ridge_susp_ce
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| 225 | {
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| 226 | struct X{
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| 227 | struct fsw_rock_ridge_susp_entry e;
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| 228 | iso9660_u32 block_loc;
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| 229 | iso9660_u32 offset;
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| 230 | iso9660_u32 len;
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| 231 | } X;
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| 232 | fsw_u8 raw[28];
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| 233 | };
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| 234 |
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| 235 | #endif
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