139 lines
4.9 KiB
C
139 lines
4.9 KiB
C
/*
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* This file is part of my_read_iso.
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*
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* my_read_iso is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* my_read_iso is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with my_read_iso; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Copyright Alexandre Becoulet, 2003
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* contact : alexandre.becoulet@epita.fr
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*/
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#ifndef ISO9660_H
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# define ISO9660_H
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# define __packed __attribute__((__packed__))
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/* Structures used for twin values */
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struct endian32 {
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u32 le; /* little endian value */
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u32 be; /* big endian value */
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} __packed;
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struct endian16 {
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u16 le; /* little endian value */
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u16 be; /* big endian value */
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} __packed;
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# define ISO_BLOCK_SIZE 2048
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/* ISO9660 Path table structure */
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struct iso_path_table_le {
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u8 idf_len; /* Identifier name length */
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u8 ext_size; /* Extended attribute record length */
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u32 data_blk; /* File data block index */
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u16 parent_dir; /* Number of the parent dir */
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char idf[0]; /* directory name */
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} __packed;
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/* ISO9660 directory structure */
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# define MAX_DIR_DEPTH 8
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# define ISO_DATE_LEN 7
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enum iso_file_type {
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ISO_FILE_HIDDEN = 1, /* File is Hidden */
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ISO_FILE_ISDIR = 2, /* Entry is a Directory */
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ISO_FILE_ASSOCIAT = 4, /* Entry is an Associated */
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ISO_FILE_USEEXT = 8,
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/* Information is structured according to the extended attribute record */
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ISO_FILE_USEPERM = 16,
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/* Permissions are specified in the extended attribute record */
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ISO_FILE_MULTIDIR = 128 /* File has more than one directory record */
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};
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struct iso_dir {
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u8 dir_size; /* Length of directory record */
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u8 ext_size; /* Extended attribute record length */
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struct endian32 data_blk; /* File data block index */
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struct endian32 file_size; /* File size */
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char date[ISO_DATE_LEN];
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u8 type; /* File type (enum iso_file_type) */
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/* only valid if the file is recorded in interleave mode */
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u8 unit_size; /* File Unit Size */
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u8 gap_size; /* Interleave Gap Size */
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struct endian16 vol_seq;
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u8 idf_len;
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char idf[0]; /* file name */
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} __packed;
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/* ISO9660 Primary volume descriptor structure */
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# define ISO_PRIM_VOLDESC_BLOCK 16
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# define ISO_SYSIDF_LEN 32
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# define ISO_VOLIDF_LEN 32
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# define ISO_VOLSET_LEN 128
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# define ISO_PUBIDF_LEN 128
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# define ISO_DPREP_LEN 128
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# define ISO_APP_LEN 128
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# define ISO_CPRFIL_LEN 37
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# define ISO_ABSFIL_LEN 37
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# define ISO_BIBFIL_LEN 37
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# define ISO_LDATE_LEN 17
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struct iso_prim_voldesc {
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u8 vol_desc_type; /* Volume Descriptor Type (1) */
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char std_identifier[5]; /* Standard Identifier (CD001) */
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u8 vol_desc_version; /* Volume Descriptor Version (1) */
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u8 unused1; /* Unused Field */
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char syidf[ISO_SYSIDF_LEN]; /* System Identifier */
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char vol_idf[ISO_VOLIDF_LEN]; /* Volume Identifier */
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u8 unused2[8]; /* Unused Field */
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struct endian32 vol_blk_count;
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/* Number of logical blocks in the Volume (LE)*/
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u8 unused4[32]; /* Unused Field */
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struct endian16 vol_set_size; /* The Volume Set size of the Volume */
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struct endian16 vol_seq_num; /* The number of the volume in the Set */
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struct endian16 vol_blk_size; /* The size in bytes of a Logical Block */
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struct endian32 path_table_size; /* Length in bytes of the path table */
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u32 le_path_table_blk; /* LittleEndian path table block index */
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u32 le_opath_table_blk;
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/* LittleEndian optional path table block index */
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u32 be_path_table_blk; /* BigEndian path table block index */
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u32 be_opath_table_blk; /* BigEndian optional path table block index */
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struct iso_dir root_dir; /* Root directory entry */
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u8 unused5[34 - sizeof (struct iso_dir)];/* padding */
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char volset_idf[ISO_VOLSET_LEN]; /* Name of the multiple volume set */
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char pub_idf[ISO_PUBIDF_LEN]; /* Publisher name */
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char dprep_idf[ISO_DPREP_LEN]; /* Data preparer name */
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char app_idf[ISO_APP_LEN]; /* Application name */
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char copyright_file[ISO_CPRFIL_LEN]; /* Copyright file name in root dir */
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char abstract_file[ISO_ABSFIL_LEN]; /* Abstract file name in root dir */
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char bibli_file[ISO_BIBFIL_LEN]; /* Bibliographic file name in root dir */
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char date_creat[ISO_LDATE_LEN]; /* Creation date */
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char date_modif[ISO_LDATE_LEN]; /* Modification date */
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char date_expir[ISO_LDATE_LEN]; /* Expiration date */
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char date_effect[ISO_LDATE_LEN]; /* Effective date */
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u8 filestrutc_version; /* File Structure Version (1) */
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} __packed;
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#endif /* !ISO9660_H */
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