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cdrtools/mkisofs/iso9660.h
Yezzi Hsueh 7c6bd698f9 Initial commit
2025-06-15 04:19:58 +08:00

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/* @(#)iso9660.h 1.22 11/06/04 joerg */
/*
* Header file iso9660.h - assorted structure definitions and typecasts.
* specific to iso9660 filesystem.
*
* Written by Eric Youngdale (1993).
*
* Copyright 1993 Yggdrasil Computing, Incorporated
* Copyright (c) 1999,2000-2007 J. Schilling
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _ISOFS_FS_H
#define _ISOFS_FS_H
/*
* The isofs filesystem constants/structures
*/
/* This part borrowed from the bsd386 isofs */
#define ISODCL(from, to) (to - from + 1)
struct iso_volume_descriptor {
char type [ISODCL(1, 1)]; /* 711 */
char id [ISODCL(2, 6)];
char version [ISODCL(7, 7)];
char data [ISODCL(8, 2048)];
};
/* volume descriptor types */
#define ISO_VD_PRIMARY 1
#define ISO_VD_SUPPLEMENTARY 2 /* Used by Joliet */
#define ISO_VD_END 255
#define ISO_STANDARD_ID "CD001"
#define EL_TORITO_ID "EL TORITO SPECIFICATION"
#define EL_TORITO_ARCH_x86 0
#define EL_TORITO_ARCH_PPC 1
#define EL_TORITO_ARCH_MAC 2
#define EL_TORITO_ARCH_EFI 0xEF
#define EL_TORITO_BOOTABLE 0x88
#define EL_TORITO_NOT_BOOTABLE 0
#define EL_TORITO_MEDIA_NOEMUL 0
#define EL_TORITO_MEDIA_12FLOP 1
#define EL_TORITO_MEDIA_144FLOP 2
#define EL_TORITO_MEDIA_288FLOP 3
#define EL_TORITO_MEDIA_HD 4
struct iso_primary_descriptor {
char type [ISODCL(1, 1)]; /* 711 */
char id [ISODCL(2, 6)];
char version [ISODCL(7, 7)]; /* 711 */
char unused1 [ISODCL(8, 8)];
char system_id [ISODCL(9, 40)]; /* achars */
char volume_id [ISODCL(41, 72)]; /* dchars */
char unused2 [ISODCL(73, 80)];
char volume_space_size [ISODCL(81, 88)]; /* 733 */
char escape_sequences [ISODCL(89, 120)];
char volume_set_size [ISODCL(121, 124)]; /* 723 */
char volume_sequence_number [ISODCL(125, 128)]; /* 723 */
char logical_block_size [ISODCL(129, 132)]; /* 723 */
char path_table_size [ISODCL(133, 140)]; /* 733 */
char type_l_path_table [ISODCL(141, 144)]; /* 731 */
char opt_type_l_path_table [ISODCL(145, 148)]; /* 731 */
char type_m_path_table [ISODCL(149, 152)]; /* 732 */
char opt_type_m_path_table [ISODCL(153, 156)]; /* 732 */
char root_directory_record [ISODCL(157, 190)]; /* 9.1 */
char volume_set_id [ISODCL(191, 318)]; /* dchars */
char publisher_id [ISODCL(319, 446)]; /* achars */
char preparer_id [ISODCL(447, 574)]; /* achars */
char application_id [ISODCL(575, 702)]; /* achars */
char copyright_file_id [ISODCL(703, 739)]; /* 7.5 dchars */
char abstract_file_id [ISODCL(740, 776)]; /* 7.5 dchars */
char bibliographic_file_id [ISODCL(777, 813)]; /* 7.5 dchars */
char creation_date [ISODCL(814, 830)]; /* 8.4.26.1 */
char modification_date [ISODCL(831, 847)]; /* 8.4.26.1 */
char expiration_date [ISODCL(848, 864)]; /* 8.4.26.1 */
char effective_date [ISODCL(865, 881)]; /* 8.4.26.1 */
char file_structure_version [ISODCL(882, 882)]; /* 711 */
char unused4 [ISODCL(883, 883)];
char application_data [ISODCL(884, 1395)];
char unused5 [ISODCL(1396, 2048)];
};
/*
* Supplementary or enhanced volume descriptor
*/
struct iso_enhanced_descriptor {
char type [ISODCL(1, 1)]; /* 711 */
char id [ISODCL(2, 6)];
char version [ISODCL(7, 7)]; /* 711 */
char flags [ISODCL(8, 8)];
char system_id [ISODCL(9, 40)]; /* achars */
char volume_id [ISODCL(41, 72)]; /* dchars */
char unused2 [ISODCL(73, 80)];
char volume_space_size [ISODCL(81, 88)]; /* 733 */
char escape_sequences [ISODCL(89, 120)];
char volume_set_size [ISODCL(121, 124)]; /* 723 */
char volume_sequence_number [ISODCL(125, 128)]; /* 723 */
char logical_block_size [ISODCL(129, 132)]; /* 723 */
char path_table_size [ISODCL(133, 140)]; /* 733 */
char type_l_path_table [ISODCL(141, 144)]; /* 731 */
char opt_type_l_path_table [ISODCL(145, 148)]; /* 731 */
char type_m_path_table [ISODCL(149, 152)]; /* 732 */
char opt_type_m_path_table [ISODCL(153, 156)]; /* 732 */
char root_directory_record [ISODCL(157, 190)]; /* 9.1 */
char volume_set_id [ISODCL(191, 318)]; /* dchars */
char publisher_id [ISODCL(319, 446)]; /* achars */
char preparer_id [ISODCL(447, 574)]; /* achars */
char application_id [ISODCL(575, 702)]; /* achars */
char copyright_file_id [ISODCL(703, 739)]; /* 7.5 dchars */
char abstract_file_id [ISODCL(740, 776)]; /* 7.5 dchars */
char bibliographic_file_id [ISODCL(777, 813)]; /* 7.5 dchars */
char creation_date [ISODCL(814, 830)]; /* 8.4.26.1 */
char modification_date [ISODCL(831, 847)]; /* 8.4.26.1 */
char expiration_date [ISODCL(848, 864)]; /* 8.4.26.1 */
char effective_date [ISODCL(865, 881)]; /* 8.4.26.1 */
char file_structure_version [ISODCL(882, 882)]; /* 711 */
char unused4 [ISODCL(883, 883)];
char application_data [ISODCL(884, 1395)];
char unused5 [ISODCL(1396, 2048)];
};
/* El Torito Boot Record Volume Descriptor */
struct eltorito_boot_descriptor {
char type [ISODCL(1, 1)]; /* 711 */
char id [ISODCL(2, 6)];
char version [ISODCL(7, 7)]; /* 711 */
char system_id [ISODCL(8, 39)];
char unused2 [ISODCL(40, 71)];
char bootcat_ptr [ISODCL(72, 75)];
char unused5 [ISODCL(76, 2048)];
};
/* Validation entry for El Torito */
/*
* headerid must be 1
* id is the manufacturer ID
* cksum to make the sum of all shorts in this record 0
*/
struct eltorito_validation_entry {
char headerid [ISODCL(1, 1)]; /* 711 */
char arch [ISODCL(2, 2)];
char pad1 [ISODCL(3, 4)]; /* 721 */
char id [ISODCL(5, 28)]; /* CD devel/man*/
char cksum [ISODCL(29, 30)];
char key1 [ISODCL(31, 31)];
char key2 [ISODCL(32, 32)];
};
/* El Torito initial/default entry in boot catalog */
struct eltorito_defaultboot_entry {
char boot_id [ISODCL(1, 1)]; /* 711 */
char boot_media [ISODCL(2, 2)];
char loadseg [ISODCL(3, 4)]; /* 721 */
char sys_type [ISODCL(5, 5)];
char pad1 [ISODCL(6, 6)];
char nsect [ISODCL(7, 8)];
char bootoff [ISODCL(9, 12)];
char pad2 [ISODCL(13, 32)];
};
/* El Torito section header entry in boot catalog */
struct eltorito_sectionheader_entry {
#define EL_TORITO_SHDR_ID_SHDR 0x90
#define EL_TORITO_SHDR_ID_LAST_SHDR 0x91
char header_id [ISODCL(1, 1)]; /* 711 */
char platform_id [ISODCL(2, 2)];
char entry_count [ISODCL(3, 4)]; /* 721 */
char id [ISODCL(5, 32)];
};
/* El Torito section entry in boot catalog */
struct eltorito_section_entry {
char boot_id [ISODCL(1, 1)]; /* 711 */
char boot_media [ISODCL(2, 2)];
char loadseg [ISODCL(3, 4)]; /* 721 */
char sys_type [ISODCL(5, 5)];
char pad1 [ISODCL(6, 6)];
char nsect [ISODCL(7, 8)];
char bootoff [ISODCL(9, 12)];
char sel_criteria [ISODCL(13, 13)];
char vendor_sel_criteria [ISODCL(14, 32)];
};
/*
* XXX JS: The next two structures have odd lengths!
* Some compilers (e.g. on Sun3/mc68020) padd the structures to even length.
* For this reason, we cannot use sizeof (struct iso_path_table) or
* sizeof (struct iso_directory_record) to compute on disk sizes.
* Instead, we use offsetof(..., name) and add the name size.
* See mkisofs.h
*/
/* We use this to help us look up the parent inode numbers. */
struct iso_path_table {
unsigned char name_len[2]; /* 721 */
char extent[4]; /* 731 */
char parent[2]; /* 721 */
char name[1];
};
/*
* A ISO filename is: "abcde.eee;1" -> <filename> '.' <ext> ';' <version #>
*
* The maximum needed string length is:
* 30 chars (filename + ext)
* + 2 chars ('.' + ';')
* + strlen("32767")
* + null byte
* ================================
* = 38 chars
*
* We currently do not support CD-ROM-XA entension records, but we must honor
* the needed space for ISO-9660:1999 (Version 2).
*
* XXX If we ever will start to support XA records, we will need to take care
* XXX that the the maximum ISO-9660 name length will be reduced by another
* XXX 14 bytes resulting in a new total of 179 Bytes.
*/
#define LEN_ISONAME 31
#define MAX_ISONAME_V1 37
#define MAX_ISONAME_V2 207 /* 254 - 33 - 14 (XA Record) */
#define MAX_ISONAME_V2_RR 193 /* 254 - 33 - 28 (CE Record) */
#define MAX_ISONAME_V2_RR_XA 179 /* 254 - 33 - 14 - 28 */
#define MAX_ISONAME MAX_ISONAME_V2 /* Used for array space defs */
#define MAX_ISODIR 254 /* Must be even and <= 255 */
struct iso_directory_record {
unsigned char length [ISODCL(1, 1)]; /* 711 */
char ext_attr_length [ISODCL(2, 2)]; /* 711 */
char extent [ISODCL(3, 10)]; /* 733 */
char size [ISODCL(11, 18)]; /* 733 */
char date [ISODCL(19, 25)]; /* 7 by 711 */
unsigned char flags [ISODCL(26, 26)];
char file_unit_size [ISODCL(27, 27)]; /* 711 */
char interleave [ISODCL(28, 28)]; /* 711 */
char volume_sequence_number [ISODCL(29, 32)]; /* 723 */
unsigned char name_len [ISODCL(33, 33)]; /* 711 */
char name [MAX_ISONAME+1]; /* Not really, but we need something here */
};
/*
* Iso directory flags.
*/
#define ISO_FILE 0 /* Not really a flag... */
#define ISO_EXISTENCE 1 /* Do not make existence known (hidden) */
#define ISO_DIRECTORY 2 /* This file is a directory */
#define ISO_ASSOCIATED 4 /* This file is an assiciated file */
#define ISO_RECORD 8 /* Record format in extended attr. != 0 */
#define ISO_PROTECTION 16 /* No read/execute perm. in ext. attr. */
#define ISO_DRESERVED1 32 /* Reserved bit 5 */
#define ISO_DRESERVED2 64 /* Reserved bit 6 */
#define ISO_MULTIEXTENT 128 /* Not final entry of a mult. ext. file */
struct iso_ext_attr_record {
char owner [ISODCL(1, 4)]; /* 723 */
char group [ISODCL(5, 8)]; /* 723 */
char permissions [ISODCL(9, 10)]; /* 16 bits */
char creation_date [ISODCL(11, 27)]; /* 8.4.26.1 */
char modification_date [ISODCL(28, 44)]; /* 8.4.26.1 */
char expiration_date [ISODCL(45, 61)]; /* 8.4.26.1 */
char effective_date [ISODCL(62, 78)]; /* 8.4.26.1 */
char record_format [ISODCL(79, 79)]; /* 711 */
char record_attributes [ISODCL(80, 80)]; /* 711 */
char record_length [ISODCL(81, 84)]; /* 723 */
char system_id [ISODCL(85, 116)]; /* achars */
char system_use [ISODCL(117, 180)];
char ext_attr_version [ISODCL(181, 181)]; /* 711 */
char esc_seq_len [ISODCL(182, 182)]; /* 711 */
char reserved [ISODCL(183, 246)]; /* for future use */
char appl_use_len [ISODCL(247, 250)]; /* 723 */
char appl_use[1]; /* really more */
/* char esc_seq[]; escape sequences recorded after appl_use */
};
/*
* Iso extended attribute permissions.
*/
#define ISO_GS_READ 0x0001 /* System Group Read */
#define ISO_BIT_1 0x0002
#define ISO_GS_EXEC 0x0004 /* System Group Execute */
#define ISO_BIT_3 0x0008
#define ISO_O_READ 0x0010 /* Owner Read */
#define ISO_BIT_5 0x0020
#define ISO_O_EXEC 0x0040 /* Owner Exexute */
#define ISO_BIT_7 0x0080
#define ISO_G_READ 0x0100 /* Group Read */
#define ISO_BIT_9 0x0200
#define ISO_G_EXEC 0x0400 /* Group Execute */
#define ISO_BIT_11 0x0800
#define ISO_W_READ 0x1000 /* World (other) Read */
#define ISO_BIT_13 0x2000
#define ISO_W_EXEC 0x4000 /* World (other) Execute */
#define ISO_BIT_15 0x8000
#define ISO_MB_ONE (ISO_BIT_1|ISO_BIT_3|ISO_BIT_5|ISO_BIT_7| \
ISO_BIT_9|ISO_BIT_11|ISO_BIT_13|ISO_BIT_15)
/*
* Extended Attributes record according to Yellow Book.
*/
struct iso_xa_dir_record {
char group_id [ISODCL(1, 2)];
char user_id [ISODCL(3, 4)];
char attributes [ISODCL(5, 6)];
char signature [ISODCL(7, 8)];
char file_number [ISODCL(9, 9)];
char reserved [ISODCL(10, 14)];
};
/*
* Definitions for XA attributes
*/
#define XA_O_READ 0x0001 /* Owner Read */
#define XA_O_RES 0x0002 /* Owner Reserved (write ?) */
#define XA_O_EXEC 0x0004 /* Owner Execute */
#define XA_O_RES2 0x0008 /* Owner Reserved */
#define XA_G_READ 0x0010 /* Group Read */
#define XA_G_RES 0x0020 /* Group Reserved (write ?) */
#define XA_G_EXEC 0x0040 /* Group Execute */
#define XA_G_RES2 0x0080 /* Group Reserved */
#define XA_W_READ 0x0100 /* World Read */
#define XA_W_RES 0x0200 /* World Reserved (write ?) */
#define XA_W_EXEC 0x0400 /* World Execute */
#define XA_FORM1 0x0800 /* File contains Form 1 sector */
#define XA_FORM2 0x1000 /* File contains Form 2 sector */
#define XA_INTERLEAVED 0x2000 /* File contains interleaved sectors */
#define XA_CDDA 0x4000 /* File contains audio data */
#define XA_DIR 0x8000 /* This is a directory */
/*
* Definitions for CD-ROM XA-Mode-2-form-1/2 sector sub-headers
*/
struct xa_subhdr {
Uchar file_number; /* Identifies file for block */
Uchar channel_number; /* Playback channel selection */
Uchar sub_mode; /* See bit definitions below */
Uchar coding; /* Coding information */
};
/*
* Sub mode bit definitions
*/
#define XA_SUBH_EOR 0x01 /* End-Of-Record */
#define XA_SUBH_VIDEO 0x02 /* Video Block */
#define XA_SUBH_AUDIO 0x04 /* Audio Block (not CD-DA) */
#define XA_SUBH_DATA 0x08 /* Data Block */
#define XA_SUBH_TRIGGER 0x10 /* Trigger Block */
#define XA_SUBH_FORM2 0x20 /* 0 == Form1, 1 == Form2 */
#define XA_SUBH_REALTIME 0x40 /* Real Time Block */
#define XA_SUBH_EOF 0x80 /* End-Of-File */
#endif /* _ISOFS_FS_H */
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