281 lines
8.3 KiB
C
281 lines
8.3 KiB
C
/*
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$Id: iso9660.h,v 1.14 2003/09/01 02:08:59 rocky Exp $
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Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
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Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
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See also iso9660.h by Eric Youngdale (1993).
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Copyright 1993 Yggdrasil Computing, Incorporated
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Copyright (c) 1999,2000 J. Schilling
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program; 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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/*
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* Header file iso9660.h - assorted structure definitions and typecasts.
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specific to iso9660 filesystem.
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*/
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#ifndef __CDIO_ISO9660_H__
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#define __CDIO_ISO9660_H__
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#include <cdio/cdio.h>
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#include <cdio/xa.h>
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#define MIN_TRACK_SIZE 4*75
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#define MIN_ISO_SIZE MIN_TRACK_SIZE
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/*
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A ISO filename is: "abcde.eee;1" -> <filename> '.' <ext> ';' <version #>
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The maximum needed string length is:
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30 chars (filename + ext)
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+ 2 chars ('.' + ';')
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+ strlen("32767")
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+ null byte
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================================
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= 38 chars
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*/
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#define LEN_ISONAME 31
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#define MAX_ISONAME 37
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#define MAX_ISOPATHNAME 255
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/*
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* ISO 9660 directory flags.
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*/
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#define ISO_FILE 0 /* Not really a flag... */
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#define ISO_EXISTENCE 1 /* Do not make existence known (hidden) */
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#define ISO_DIRECTORY 2 /* This file is a directory */
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#define ISO_ASSOCIATED 4 /* This file is an assiciated file */
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#define ISO_RECORD 8 /* Record format in extended attr. != 0 */
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#define ISO_PROTECTION 16 /* No read/execute perm. in ext. attr. */
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#define ISO_DRESERVED1 32 /* Reserved bit 5 */
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#define ISO_DRESERVED2 64 /* Reserved bit 6 */
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#define ISO_MULTIEXTENT 128 /* Not final entry of a mult. ext. file */
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/* Volume descriptor types */
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#define ISO_VD_PRIMARY 1
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#define ISO_VD_SUPPLEMENTARY 2 /* Used by Joliet */
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#define ISO_VD_END 255
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#define ISO_PVD_SECTOR 16
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#define ISO_EVD_SECTOR 17
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#define ISO_STANDARD_ID "CD001"
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#define ISO_BLOCKSIZE 2048
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enum strncpy_pad_check {
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ISO9660_NOCHECK = 0,
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ISO9660_7BIT,
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ISO9660_ACHARS,
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ISO9660_DCHARS
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};
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PRAGMA_BEGIN_PACKED
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/* ISO-9660 Primary Volume Descriptor.
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*/
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typedef struct iso9660_pvd {
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uint8_t type; /* 711 */
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char id[5];
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uint8_t version; /* 711 */
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char unused1[1];
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char system_id[32]; /* achars */
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char volume_id[32]; /* dchars */
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char unused2[8];
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uint64_t volume_space_size; /* 733 */
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char escape_sequences[32];
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uint32_t volume_set_size; /* 723 */
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uint32_t volume_sequence_number; /* 723 */
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uint32_t logical_block_size; /* 723 */
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uint64_t path_table_size; /* 733 */
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uint32_t type_l_path_table; /* 731 */
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uint32_t opt_type_l_path_table; /* 731 */
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uint32_t type_m_path_table; /* 732 */
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uint32_t opt_type_m_path_table; /* 732 */
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char root_directory_record[34]; /* 9.1 */
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char volume_set_id[128]; /* dchars */
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char publisher_id[128]; /* achars */
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char preparer_id[128]; /* achars */
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char application_id[128]; /* achars */
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char copyright_file_id[37]; /* 7.5 dchars */
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char abstract_file_id[37]; /* 7.5 dchars */
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char bibliographic_file_id[37]; /* 7.5 dchars */
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char creation_date[17]; /* 8.4.26.1 */
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char modification_date[17]; /* 8.4.26.1 */
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char expiration_date[17]; /* 8.4.26.1 */
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char effective_date[17]; /* 8.4.26.1 */
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uint8_t file_structure_version; /* 711 */
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char unused4[1];
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char application_data[512];
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char unused5[653];
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} iso9660_pvd_t GNUC_PACKED;
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typedef struct iso9660_dir iso9660_dir_t;
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#ifndef EMPTY_ARRAY_SIZE
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#define EMPTY_ARRAY_SIZE 0
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#endif
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/*
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* XXX JS: The next structure may have an odd length!
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* Some compilers (e.g. on Sun3/mc68020) padd the structures to even length.
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* For this reason, we cannot use sizeof (struct iso_path_table) or
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* sizeof (struct iso_directory_record) to compute on disk sizes.
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* Instead, we use offsetof(..., name) and add the name size.
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* See mkisofs.h
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*/
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/* Format of an ISO-9660 directory record */
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struct iso9660_dir {
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uint8_t length; /* 711 */
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uint8_t ext_attr_length; /* 711 */
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uint64_t extent; /* 733 */
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uint64_t size; /* 733 */
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uint8_t date[7]; /* 7 by 711 */
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uint8_t flags;
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uint8_t file_unit_size; /* 711 */
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uint8_t interleave; /* 711 */
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uint32_t volume_sequence_number; /* 723 */
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uint8_t name_len; /* 711 */
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char name[EMPTY_ARRAY_SIZE];
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} GNUC_PACKED;
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typedef struct iso9660_stat { /* big endian!! */
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enum { _STAT_FILE = 1, _STAT_DIR = 2 } type;
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lsn_t lsn; /* start logical sector number */
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uint32_t size; /* total size in bytes */
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uint32_t secsize; /* number of sectors allocated */
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iso9660_xa_t xa; /* XA attributes */
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} iso9660_stat_t;
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PRAGMA_END_PACKED
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char *
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iso9660_strncpy_pad(char dst[], const char src[], size_t len,
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enum strncpy_pad_check _check);
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int
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iso9660_isdchar (int c);
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int
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iso9660_isachar (int c);
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/* file/dirname's */
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bool
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iso9660_pathname_valid_p (const char pathname[]);
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bool
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iso9660_dirname_valid_p (const char pathname[]);
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char *
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iso9660_pathname_isofy (const char pathname[], uint16_t version);
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/* directory tree */
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void
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iso9660_dir_init_new (void *dir, uint32_t self, uint32_t ssize,
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uint32_t parent, uint32_t psize);
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void
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iso9660_dir_init_new_su (void *dir, uint32_t self, uint32_t ssize,
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const void *ssu_data, unsigned ssu_size,
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uint32_t parent, uint32_t psize,
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const void *psu_data, unsigned psu_size);
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void
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iso9660_dir_add_entry_su (void *dir, const char name[], uint32_t extent,
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uint32_t size, uint8_t flags, const void *su_data,
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unsigned su_size);
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unsigned
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iso9660_dir_calc_record_size (unsigned namelen, unsigned int su_len);
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int
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iso9660_fs_stat (CdIo *obj,const char pathname[], iso9660_stat_t *buf,
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bool is_mode2);
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void * /* list of char* -- caller must free it */
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iso9660_fs_readdir (CdIo *obj, const char pathname[], bool mode2);
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uint8_t
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iso9660_get_dir_len(const iso9660_dir_t *idr);
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#if FIXME
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uint8_t
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iso9660_get_dir_size(const iso9660_dir_t *idr);
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lsn_t
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iso9660_get_dir_extent(const iso9660_dir_t *idr);
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#endif
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uint8_t
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iso9660_get_pvd_type(const iso9660_pvd_t *pvd);
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const char *
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iso9660_get_pvd_id(const iso9660_pvd_t *pvd);
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int
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iso9660_get_pvd_space_size(const iso9660_pvd_t *pvd);
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int
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iso9660_get_pvd_block_size(const iso9660_pvd_t *pvd) ;
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int
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iso9660_get_pvd_version(const iso9660_pvd_t *pvd) ;
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lsn_t
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iso9660_get_root_lsn(const iso9660_pvd_t *pvd);
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/* pathtable */
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void
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iso9660_pathtable_init (void *pt);
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unsigned int
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iso9660_pathtable_get_size (const void *pt);
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uint16_t
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iso9660_pathtable_l_add_entry (void *pt, const char name[], uint32_t extent,
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uint16_t parent);
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uint16_t
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iso9660_pathtable_m_add_entry (void *pt, const char name[], uint32_t extent,
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uint16_t parent);
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/* volume descriptors */
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void
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iso9660_set_pvd (void *pd, const char volume_id[], const char application_id[],
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const char publisher_id[], const char preparer_id[],
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uint32_t iso_size, const void *root_dir,
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uint32_t path_table_l_extent, uint32_t path_table_m_extent,
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uint32_t path_table_size);
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void
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iso9660_set_evd (void *pd);
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#endif /* __CDIO_ISO9660_H__ */
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/*
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* Local variables:
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* c-file-style: "gnu"
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*/
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