code.delx.au - refind/blob - filesystems/fsw_iso9660.h

   1 /* $Id: fsw_iso9660.h 29125 2010-05-06 09:43:05Z vboxsync $ */
   2 /** @file
   3  * fsw_iso9660.h - ISO9660 file system driver header.
   4  */
   5
   6 /*-
   7  * Copyright (c) 2006 Christoph Pfisterer
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions are
  11  * met:
  12  *
  13  *  * Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  *  * Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  *  * Neither the name of Christoph Pfisterer nor the names of the
  22  *    contributors may be used to endorse or promote products derived
  23  *    from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #ifndef _FSW_ISO9660_H_
  39 #define _FSW_ISO9660_H_
  40
  41 #define VOLSTRUCTNAME fsw_iso9660_volume
  42 #define DNODESTRUCTNAME fsw_iso9660_dnode
  43 #include "fsw_core.h"
  44
  45
  46 //! Block size for ISO9660 volumes.
  47 #define ISO9660_BLOCKSIZE          2048
  48 #define ISO9660_BLOCKSIZE_BITS       11
  49 //! Block number where the ISO9660 superblock resides.
  50 #define ISO9660_SUPERBLOCK_BLOCKNO   16
  51 //Slice - we already have shifted blockIO by 16
  52 //but we should use ParentBlockIo
  53 //#define ISO9660_SUPERBLOCK_BLOCKNO   0
  54
  55 #pragma pack(1)
  56
  57 typedef struct {
  58     fsw_u16     lsb;
  59     fsw_u16     msb;
  60 } iso9660_u16;
  61
  62 typedef struct {
  63     fsw_u32     lsb;
  64     fsw_u32     msb;
  65 } iso9660_u32;
  66
  67 #define ISOINT(lsbmsbvalue) ((lsbmsbvalue).lsb)
  68
  69 struct iso9660_dirrec {
  70     fsw_u8      dirrec_length;
  71     fsw_u8      ear_length;
  72     iso9660_u32 extent_location;
  73     iso9660_u32 data_length;
  74     fsw_u8      recording_datetime[7];
  75     fsw_u8      file_flags;
  76     fsw_u8      file_unit_size;
  77     fsw_u8      interleave_gap_size;
  78     iso9660_u16 volume_sequence_number;
  79     fsw_u8      file_identifier_length;
  80     char        file_identifier[1];
  81 };
  82 //#if sizeof(struct fsw_iso9660_dirrec) != 34
  83 //#fail Structure fsw_iso9660_dirrec has wrong size
  84 //#endif
  85
  86 struct iso9660_volume_descriptor {
  87     fsw_u8      volume_descriptor_type;
  88     char        standard_identifier[5];
  89     fsw_u8      volume_descriptor_version;
  90 };
  91
  92 struct iso9660_primary_volume_descriptor {
  93     fsw_u8      volume_descriptor_type;
  94     char        standard_identifier[5];
  95     fsw_u8      volume_descriptor_version;
  96     fsw_u8      unused1;
  97     char        system_identifier[32];
  98     char        volume_identifier[32];
  99     fsw_u8      unused2[8];
 100     iso9660_u32 volume_space_size;
 101     fsw_u8      unused3[4];
 102     fsw_u8      escape[3];
 103     fsw_u8      unused4[25];
 104     iso9660_u16 volume_set_size;
 105     iso9660_u16 volume_sequence_number;
 106     iso9660_u16 logical_block_size;
 107     iso9660_u32 path_table_size;
 108     fsw_u32     location_type_l_path_table;
 109     fsw_u32     location_optional_type_l_path_table;
 110     fsw_u32     location_type_m_path_table;
 111     fsw_u32     location_optional_type_m_path_table;
 112     struct iso9660_dirrec root_directory;
 113     char        volume_set_identifier[128];
 114     char        publisher_identifier[128];
 115     char        data_preparer_identifier[128];
 116     char        application_identifier[128];
 117     char        copyright_file_identifier[37];
 118     char        abstract_file_identifier[37];
 119     char        bibliographic_file_identifier[37];
 120     char        volume_creation_datetime[17];
 121     char        volume_modification_datetime[17];
 122     char        volume_expiration_datetime[17];
 123     char        volume_effective_datetime[17];
 124     fsw_u8      file_structure_version;
 125     fsw_u8      reserved1;
 126     fsw_u8      application_use[512];
 127     fsw_u8      reserved2[653];
 128 };
 129 //#if sizeof(struct fsw_iso9660_volume_descriptor) != 2048
 130 //#fail Structure fsw_iso9660_volume_descriptor has wrong size
 131 //#endif
 132
 133 #pragma pack()
 134
 135 struct iso9660_dirrec_buffer {
 136     fsw_u32     ino;
 137     struct fsw_string name;
 138     struct iso9660_dirrec dirrec;
 139     char        dirrec_buffer[222];
 140 };
 141
 142
 143 /**
 144  * ISO9660: Volume structure with ISO9660-specific data.
 145  */
 146
 147 struct fsw_iso9660_volume {
 148     struct fsw_volume g;            //!< Generic volume structure
 149     /*Note: don't move g!*/
 150     int fJoliet;
 151     /*Joliet specific fields*/
 152     int fRockRidge;
 153     /*Rock Ridge specific fields*/
 154     int rr_susp_skip;
 155
 156     struct iso9660_primary_volume_descriptor *primary_voldesc;  //!< Full Primary Volume Descriptor
 157 };
 158
 159 /**
 160  * ISO9660: Dnode structure with ISO9660-specific data.
 161  */
 162
 163 struct fsw_iso9660_dnode {
 164     struct fsw_dnode g;             //!< Generic dnode structure
 165
 166     struct iso9660_dirrec dirrec;   //!< Fixed part of the directory record (i.e. w/o name)
 167 };
 168
 169
 170 struct fsw_rock_ridge_susp_entry
 171 {
 172     fsw_u8  sig[2];
 173     fsw_u8  len;
 174     fsw_u8  ver;
 175 };
 176
 177 struct fsw_rock_ridge_susp_sp
 178 {
 179     struct fsw_rock_ridge_susp_entry e;
 180     fsw_u8  magic[2];
 181     fsw_u8  skip;
 182 };
 183
 184 struct fsw_rock_ridge_susp_nm
 185 {
 186     struct fsw_rock_ridge_susp_entry e;
 187     fsw_u8  flags;
 188     fsw_u8  name[1];
 189 };
 190
 191 #define RR_NM_CONT (1<<0)
 192 #define RR_NM_CURR (1<<1)
 193 #define RR_NM_PARE (1<<2)
 194
 195 union fsw_rock_ridge_susp_ce
 196 {
 197     struct X{
 198         struct fsw_rock_ridge_susp_entry e;
 199         iso9660_u32 block_loc;
 200         iso9660_u32 offset;
 201         iso9660_u32 len;
 202     } X;
 203     fsw_u8 raw[28];
 204 };
 205
 206 #endif