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rufus/src/libcdio/cdio/iso9660.h

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/*
Copyright (C) 2003-2008, 2012-2013, 2017, 2023-2024
Rocky Bernstein <rocky@gnu.org>
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
See also iso9660.h by Eric Youngdale (1993).
Copyright 1993 Yggdrasil Computing, Incorporated
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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
*/
/*!
* \file iso9660.h
*
* \brief The top-level interface header for libiso9660: the ISO-9660
* filesystem library; applications include this.
*
* See also the ISO-9660 specification. The freely available European
* equivalent standard is called ECMA-119.
*/
#ifndef CDIO_ISO9660_H_
#define CDIO_ISO9660_H_
#include <time.h>
#include <cdio/cdio.h>
#include <cdio/ds.h>
#include <cdio/posix.h>
/** \brief ISO 9660 Integer and Character types
These are described in the section 7 of the ISO 9660 (or ECMA 119)
specification.
*/
typedef uint8_t iso711_t; /*! See section 7.1.1 */
typedef int8_t iso712_t; /*! See section 7.1.2 */
typedef uint16_t iso721_t; /*! See section 7.2.1 */
typedef uint16_t iso722_t; /*! See section 7.2.2 */
typedef uint32_t iso723_t; /*! See section 7.2.3 */
typedef uint32_t iso731_t; /*! See section 7.3.1 */
typedef uint32_t iso732_t; /*! See section 7.3.2 */
typedef uint64_t iso733_t; /*! See section 7.3.3 */
typedef char achar_t; /*! See section 7.4.1 */
typedef char dchar_t; /*! See section 7.4.1 */
#ifndef EMPTY_ARRAY_SIZE
#define EMPTY_ARRAY_SIZE 0
#endif
#include <cdio/types.h>
#include <cdio/xa.h>
#ifdef ISODCL
#undef ISODCL
#endif
/* This part borrowed from the bsd386 isofs */
#define ISODCL(from, to) ((to) - (from) + 1)
#define MIN_TRACK_SIZE 4*75
#define MIN_ISO_SIZE MIN_TRACK_SIZE
/*! The below isn't really an enumeration one would really use in a
program; things are done this way so that in a debugger one can to
refer to the enumeration value names such as in a debugger
expression and get something. With the more common a \#define
mechanism, the name/value association is lost at run time.
*/
extern enum iso_enum1_s {
ISO_PVD_SECTOR = 16, /**< Sector of Primary Volume Descriptor. */
ISO_EVD_SECTOR = 17, /**< Sector of End Volume Descriptor. */
LEN_ISONAME = 31, /**< Size in bytes of the filename
portion + null byte. */
ISO_MAX_SYSTEM_ID = 32, /**< Maximum number of characters in a system
id. */
MAX_ISONAME = 37, /**< Size in bytes of the filename
portion + null byte. */
ISO_MAX_PREPARER_ID = 128, /**< Maximum number of characters in a
preparer id. */
MAX_ISOPATHNAME = 255, /**< Maximum number of characters in the
entire ISO 9660 filename. */
ISO_BLOCKSIZE = 2048, /**< Number of bytes in an ISO 9660 block. */
VIRTUAL_SECTORSIZE = 512 /**< Number of bytes in an El Torito virtual
image sector */
} iso_enums1;
/*! An enumeration for some of the ISO_* \#defines below. This isn't
really an enumeration one would really use in a program it is here
to be helpful in debuggers where wants just to refer to the
ISO_*_ names and get something.
*/
/*! ISO 9660 directory flags. */
extern enum iso_flag_enum_s {
ISO_FILE = 0, /**< Not really a flag... */
ISO_EXISTENCE = 1, /**< Do not make existence known (hidden) */
ISO_DIRECTORY = 2, /**< This file is a directory */
ISO_ASSOCIATED = 4, /**< This file is an associated file */
ISO_RECORD = 8, /**< Record format in extended attr. != 0 */
ISO_PROTECTION = 16, /**< No read/execute perm. in ext. attr. */
ISO_DRESERVED1 = 32, /**<, Reserved bit 5 */
ISO_DRESERVED2 = 64, /**<, Reserved bit 6 */
ISO_MULTIEXTENT = 128, /**< Not final entry of a mult. ext. file */
} iso_flag_enums;
/*! Volume descriptor types */
extern enum iso_vd_enum_s {
ISO_VD_BOOT_RECORD = 0, /**< CD is bootable */
ISO_VD_PRIMARY = 1, /**< Is in any ISO-9660 */
ISO_VD_SUPPLEMENTARY = 2, /**< Used by Joliet, for example */
ISO_VD_PARITION = 3, /**< Indicates a partition of a CD */
ISO_VD_END = 255
} iso_vd_enums;
/*!
An ISO filename is:
<em>abcd</em>.<em>eee</em> ->
<em>filename</em>.<em>ext</em>;<em>version#</em>
For ISO-9660 Level 1, the maximum needed string length is:
@code
30 chars (filename + ext)
+ 2 chars ('.' + ';')
+ 5 chars (strlen("32767"))
+ 1 null byte
================================
= 38 chars
@endcode
*/
/*! \brief Maximum number of characters in a publisher id. */
#define ISO_MAX_PUBLISHER_ID 128
/*! \brief Maximum number of characters in an application id. */
#define ISO_MAX_APPLICATION_ID 128
/*! \brief Maximum number of characters in a volume id. */
#define ISO_MAX_VOLUME_ID 32
/*! \brief Maximum number of characters in a volume-set id. */
#define ISO_MAX_VOLUMESET_ID 128
/*! String inside frame which identifies an ISO 9660 filesystem. This
string is the "id" field of an iso9660_pvd_t or an iso9660_svd_t.
*/
extern const char ISO_STANDARD_ID[sizeof("CD001")-1];
#define ISO_STANDARD_ID "CD001"
#define EL_TORITO_ID "EL TORITO SPECIFICATION\0\0\0\0\0\0\0\0\0"
#define CDIO_EXTENT_BLOCKS(size) ((size + (ISO_BLOCKSIZE - 1)) / ISO_BLOCKSIZE)
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef enum strncpy_pad_check {
ISO9660_NOCHECK = 0,
ISO9660_7BIT,
ISO9660_ACHARS,
ISO9660_DCHARS
} strncpy_pad_check_t;
PRAGMA_BEGIN_PACKED
/*!
\brief ISO-9660 shorter-format time structure. See ECMA 9.1.5.
@see iso9660_dtime
*/
struct iso9660_dtime_s {
iso711_t dt_year; /**< Number of years since 1900 */
iso711_t dt_month; /**< Has value in range 1..12. Note starts
at 1, not 0 like a tm struct. */
iso711_t dt_day; /**< Day of the month from 1 to 31 */
iso711_t dt_hour; /**< Hour of the day from 0 to 23 */
iso711_t dt_minute; /**< Minute of the hour from 0 to 59 */
iso711_t dt_second; /**< Second of the minute from 0 to 59 */
iso712_t dt_gmtoff; /**< GMT values -48 .. + 52 in 15 minute
intervals */
} GNUC_PACKED;
typedef struct iso9660_dtime_s iso9660_dtime_t;
/*!
\brief ISO-9660 longer-format time structure.
Section 8.4.26.1 of ECMA 119. All values are encoded as character
arrays, eg. '1', '9', '5', '5' for the year 1955 (no null terminated
byte).
@see iso9660_ltime
*/
struct iso9660_ltime_s {
char lt_year [ISODCL( 1, 4)]; /**< Add 1900 to value
for the Julian
year */
char lt_month [ISODCL( 5, 6)]; /**< Has value in range
1..12. Note starts
at 1, not 0 like a
tm struct. */
char lt_day [ISODCL( 7, 8)]; /**< Day of month: 1..31 */
char lt_hour [ISODCL( 9, 10)]; /**< hour: 0..23 */
char lt_minute [ISODCL( 11, 12)]; /**< minute: 0..59 */
char lt_second [ISODCL( 13, 14)]; /**< second: 0..59 */
char lt_hsecond [ISODCL( 15, 16)]; /**< The value is in
units of 1/100's of
a second */
iso712_t lt_gmtoff; /**< Offset from Greenwich Mean Time in number
of 15 min intervals from -48 (West) to +52
(East) recorded according to 7.1.2 numerical
value */
} GNUC_PACKED;
typedef struct iso9660_ltime_s iso9660_ltime_t;
typedef struct iso9660_dir_s iso9660_dir_t;
typedef struct iso9660_stat_s iso9660_stat_t;
#include <cdio/rock.h>
/*! \brief Format of an ISO-9660 directory record
Section 9.1 of ECMA 119.
This structure may have an odd length depending on how many
characters there are in the filename! Some compilers (e.g. on
Sun3/mc68020) pad the structures to an 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 of the
cdrtools package.
@see iso9660_stat
*/
struct iso9660_dir_s {
iso711_t length; /*! Length of Directory record (9.1.1) */
iso711_t xa_length; /*! XA length if XA is used. Otherwise
zero. (9.1.2) */
iso733_t extent; /*! LBA of first local block allocated
to the extent */
iso733_t size; /*! data length of File Section. This
does not include the length of
any XA Records. (9.1.2) */
iso9660_dtime_t recording_time; /*! Recording date and time (9.1.3) */
uint8_t file_flags; /*! If no XA then zero. If a directory,
then bits 2,3 and 7 are zero.
(9.1.6) */
iso711_t file_unit_size; /*! File Unit size for the File
Section if the File Section
is recorded in interleaved
mode. Otherwise zero. (9.1.7) */
iso711_t interleave_gap; /*! Interleave Gap size for the
File Section if the File
Section is interleaved. Otherwise
zero. (9.1.8) */
iso723_t volume_sequence_number; /*! Ordinal number of the volume
in the Volume Set on which
the Extent described by this
Directory Record is
recorded. (9.1.9) */
/*! MSVC compilers cannot handle a zero sized array in the middle
of a struct, and iso9660_dir_s is reused within iso9660_pvd_s.
Therefore, instead of defining:
iso711_t filename_len;
char filename[];
we leverage the fact that iso711_t and char are the same size
and use an union. The only gotcha is that the actual string
payload of filename.str[] starts at 1, not 0. */
union {
iso711_t len;
char str[1];
} filename;
} GNUC_PACKED;
/*!
\brief ISO-9660 Primary Volume Descriptor.
*/
struct iso9660_pvd_s {
iso711_t type; /**< ISO_VD_PRIMARY - 1 */
char id[5]; /**< ISO_STANDARD_ID "CD001"
*/
iso711_t version; /**< value 1 for ECMA 119 */
char unused1[1]; /**< unused - value 0 */
achar_t system_id[ISO_MAX_SYSTEM_ID]; /**< each char is an achar */
dchar_t volume_id[ISO_MAX_VOLUME_ID]; /**< each char is a dchar */
uint8_t unused2[8]; /**< unused - value 0 */
iso733_t volume_space_size; /**< total number of
sectors */
uint8_t unused3[32]; /**< unused - value 0 */
iso723_t volume_set_size; /**< often 1 */
iso723_t volume_sequence_number; /**< often 1 */
iso723_t logical_block_size; /**< sector size, e.g. 2048 */
iso733_t path_table_size; /**< bytes in path table */
iso731_t type_l_path_table; /**< first sector of L Path
Table */
iso731_t opt_type_l_path_table; /**< first sector of optional
L Path Table */
iso732_t type_m_path_table; /**< first sector of M Path
table */
iso732_t opt_type_m_path_table; /**< first sector of optional
M Path table */
iso9660_dir_t root_directory_record; /**< See 8.4.18 and
section 9.1 of
ISO 9660 spec. */
char root_directory_filename; /**< Is '\\0' or root
directory. Also pads previous
field to 34 bytes */
dchar_t volume_set_id[ISO_MAX_VOLUMESET_ID]; /**< Volume Set of
which the volume is
a member. See
section 8.4.19 */
achar_t publisher_id[ISO_MAX_PUBLISHER_ID]; /**< Publisher of
volume. If the first
character is '_' 0x5F,
the remaining bytes
specify a file
containing the user.
If all bytes are " "
(0x20) no publisher
is specified. See
section 8.4.20 of
ECMA 119 */
achar_t preparer_id[ISO_MAX_PREPARER_ID]; /**< preparer of
volume. If the first
character is '_' 0x5F,
the remaining bytes
specify a file
containing the user.
If all bytes are " "
(0x20) no preparer
is specified.
See section 8.4.21
of ECMA 119 */
achar_t application_id[ISO_MAX_APPLICATION_ID]; /**< application
use to create the
volume. If the first
character is '_' 0x5F,
the remaining bytes
specify a file
containing the user.
If all bytes are " "
(0x20) no application
is specified.
See section of 8.4.22
of ECMA 119 */
dchar_t copyright_file_id[37]; /**< Name of file for
copyright info. If
all bytes are " "
(0x20), then no file
is identified. See
section 8.4.23 of ECMA 119
9660 spec. */
dchar_t abstract_file_id[37]; /**< See section 8.4.24 of
ECMA 119. */
dchar_t bibliographic_file_id[37]; /**< See section 7.5 of
ISO 9660 spec. */
iso9660_ltime_t creation_date; /**< date and time of volume
creation. See section 8.4.26.1
of the ISO 9660 spec. */
iso9660_ltime_t modification_date; /**< date and time of the most
recent modification.
See section 8.4.27 of the
ISO 9660 spec. */
iso9660_ltime_t expiration_date; /**< date and time when volume
expires. See section 8.4.28
of the ISO 9660 spec. */
iso9660_ltime_t effective_date; /**< date and time when volume
is effective. See section
8.4.29 of the ISO 9660
spec. */
iso711_t file_structure_version; /**< value 1 for ECMA 119 */
uint8_t unused4[1]; /**< unused - value 0 */
char application_data[512]; /**< Application can put
whatever it wants here. */
uint8_t unused5[653]; /**< Unused - value 0 */
} GNUC_PACKED;
typedef struct iso9660_pvd_s iso9660_pvd_t;
/*!
\brief ISO-9660 Supplementary Volume Descriptor.
This is used for Joliet Extensions and is almost the same as the
the primary descriptor but two unused fields, "unused1" and "unused3
become "flags and "escape_sequences" respectively.
*/
struct iso9660_svd_s {
iso711_t type; /**< ISO_VD_SUPPLEMENTARY - 2
*/
char id[5]; /**< ISO_STANDARD_ID "CD001"
*/
iso711_t version; /**< value 1 */
char flags; /**< Section 8.5.3 */
achar_t system_id[ISO_MAX_SYSTEM_ID]; /**< Section 8.5.4; each char
is an achar */
dchar_t volume_id[ISO_MAX_VOLUME_ID]; /**< Section 8.5.5; each char
is a dchar */
char unused2[8];
iso733_t volume_space_size; /**< total number of
sectors */
char escape_sequences[32]; /**< Section 8.5.6 */
iso723_t volume_set_size; /**< often 1 */
iso723_t volume_sequence_number; /**< often 1 */
iso723_t logical_block_size; /**< sector size, e.g. 2048 */
iso733_t path_table_size; /**< 8.5.7; bytes in path
table */
iso731_t type_l_path_table; /**< 8.5.8; first sector of
little-endian path table */
iso731_t opt_type_l_path_table; /**< 8.5.9; first sector of
optional little-endian
path table */
iso732_t type_m_path_table; /**< 8.5.10; first sector of
big-endian path table */
iso732_t opt_type_m_path_table; /**< 8.5.11; first sector of
optional big-endian path
table */
iso9660_dir_t root_directory_record; /**< See section 8.5.12 and
9.1 of ISO 9660 spec. */
char root_directory_filename; /**< Is '\\0' or root
directory. Also pads previous
field to 34 bytes */
dchar_t volume_set_id[ISO_MAX_VOLUMESET_ID]; /**< 8.5.13;
dchars */
achar_t publisher_id[ISO_MAX_PUBLISHER_ID]; /**<
Publisher of volume.
If the first char-
aracter is '_' 0x5F,
the remaining bytes
specify a file
containing the user.
If all bytes are " "
(0x20) no publisher
is specified. See
section 8.5.14 of
ECMA 119 */
achar_t preparer_id[ISO_MAX_PREPARER_ID]; /**<
Data preparer of
volume. If the first
character is '_' 0x5F,
the remaining bytes
specify a file
containing the user.
If all bytes are " "
(0x20) no preparer
is specified.
See section 8.5.15
of ECMA 119 */
achar_t application_id[ISO_MAX_APPLICATION_ID]; /**< application
use to create the
volume. If the first
character is '_' 0x5F,
the remaining bytes
specify a file
containing the user.
If all bytes are " "
(0x20) no application
is specified.
See section of 8.5.16
of ECMA 119 */
dchar_t copyright_file_id[37]; /**< Name of file for
copyright info. If
all bytes are " "
(0x20), then no file
is identified. See
section 8.5.17 of ECMA 119
9660 spec. */
dchar_t abstract_file_id[37]; /**< See section 8.5.18 of
ECMA 119. */
dchar_t bibliographic_file_id[37]; /**< See section 8.5.19 of
ECMA 119. */
iso9660_ltime_t creation_date; /**< date and time of volume
creation. See section 8.4.26.1
of the ECMA 119 spec. */
iso9660_ltime_t modification_date; /**< date and time of the most
recent modification.
See section 8.4.27 of the
ECMA 119 spec. */
iso9660_ltime_t expiration_date; /**< date and time when volume
expires. See section 8.4.28
of the ECMA 119 spec. */
iso9660_ltime_t effective_date; /**< date and time when volume
is effective. See section
8.4.29 of the ECMA 119
spec. */
iso711_t file_structure_version; /**< value 1 for ECMA 119 */
uint8_t unused4[1]; /**< unused - value 0 */
char application_data[512]; /**< 8.5.20 Application can put
whatever it wants here. */
uint8_t unused5[653]; /**< Unused - value 0 */
} GNUC_PACKED;
typedef struct iso9660_svd_s iso9660_svd_t;
/*!
\brief ISO-9660 Boot Record Volume Descriptor.
*/
struct iso9660_brvd_s {
uint8_t type; /**< ISO_VD_BOOT_RECORD - 0 */
char id[5]; /**< ISO_STANDARD_ID "CD001" */
uint8_t version; /**< value 1 for El Torito */
char system_id[ISO_MAX_SYSTEM_ID]; /**< Boot system ID */
uint8_t unused1[32]; /**< unused - value 0 */
uint32_t boot_catalog_sector; /**< first sector of boot catalog */
uint8_t unused2[1973]; /**< Unused - value 0 */
} GNUC_PACKED;
typedef struct iso9660_brvd_s iso9660_brvd_t;
/*!
\brief ISO-9660 Boot Record Volume Descriptor.
*/
struct iso9660_br_s {
uint8_t boot_id; /**< Boot indicator - 0x88 */
uint8_t media_type; /**< Boot media type - 0 for no emul. */
uint16_t load_seg; /**< Load segment for x86 */
uint8_t system_type; /**< System type - 0 for x86 */
uint8_t unused1;
uint16_t num_sectors; /**< Virtual sectors count of the image */
uint32_t image_lsn; /**< Start address of the image */
uint8_t unused2[20];
} GNUC_PACKED;
typedef struct iso9660_br_s iso9660_br_t;
PRAGMA_END_PACKED
/*! \brief A data type for a list of ISO9660
statbuf file pointers returned from the various
Cdio iso9660 readdir routines.
*/
typedef CdioList_t CdioISO9660FileList_t;
/*! \brief A data type for a list of ISO9660
statbuf drectory pointer returned from the variious
Cdio iso9660 readdir routines.
*/
typedef CdioList_t CdioISO9660DirList_t;
/*! \brief Unix stat-like version of iso9660_dir
The iso9660_stat structure is not part of the ISO-9660
specification. We use it for our to communicate information
in a C-library friendly way, e.g struct tm time structures and
a C-style filename string.
@see iso9660_dir
*/
struct iso9660_stat_s { /* big endian!! */
iso_rock_statbuf_t rr; /**< Rock Ridge-specific fields */
struct tm tm; /**< time on entry - FIXME merge with
one of entries above, like ctime? */
lsn_t lsn; /**< start logical sector number */
#ifndef DO_NOT_WANT_COMPATIBILITY
/* *** Deprecated Legacy API ***
Use .total_size and CDIO_EXTENT_BLOCKS.
*/
uint32_t size; /**< size of the first extent, in bytes */
uint32_t secsize; /**< size of the first extent, in sectors */
#endif /* DO_NOT_WANT_COMPATIBILITY */
/* Multi-extent aware size, in bytes.
It is guaranteed that the bytes are stored as gapless string in a
contiguous sequence of blocks. I.e. they can be read sequentially
starting at iso9660_stat_s.lsn.
Data files which do not fulfil this promise cause a warning message
and are not represented by this type of struct.
(Directories are not allowed to have more than one extent and thus cannot
legally break the promise.)
*/
uint64_t total_size;
/* NB: If you need to access the 'secsize' equivalent for an extent,
* you should use CDIO_EXTENT_BLOCKS(iso9660_stat_s.total_size) */
iso9660_xa_t xa; /**< XA attributes */
enum { _STAT_FILE = 1, _STAT_DIR = 2 } type;
bool b_xa;
char filename[EMPTY_ARRAY_SIZE]; /**< filename */
};
/** A mask used in iso9660_ifs_read_vd which allows what kinds
of extensions we allow, eg. Joliet, Rock Ridge, etc. */
typedef uint8_t iso_extension_mask_t;
/*! An enumeration for some of the ISO_EXTENSION_* \#defines below. This isn't
really an enumeration one would really use in a program it is here
to be helpful in debuggers where wants just to refer to the
ISO_EXTENSION_*_ names and get something.
*/
extern enum iso_extension_enum_s {
ISO_EXTENSION_JOLIET_LEVEL1 = 0x01,
ISO_EXTENSION_JOLIET_LEVEL2 = 0x02,
ISO_EXTENSION_JOLIET_LEVEL3 = 0x04,
ISO_EXTENSION_ROCK_RIDGE = 0x08,
ISO_EXTENSION_HIGH_SIERRA = 0x10,
ISO_EXTENSION_EL_TORITO = 0x20
} iso_extension_enums;
#define ISO_EXTENSION_ALL 0xFF
#define ISO_EXTENSION_NONE 0x00
#define ISO_EXTENSION_JOLIET \
(ISO_EXTENSION_JOLIET_LEVEL1 | \
ISO_EXTENSION_JOLIET_LEVEL2 | \
ISO_EXTENSION_JOLIET_LEVEL3 )
/** This is an opaque structure. */
typedef struct _iso9660_s iso9660_t;
/*! Close previously opened ISO 9660 image and free resources
associated with the image. Call this when done using using an ISO
9660 image.
@param p_iso the ISO-9660 file image to get data from
@return true is unconditionally returned. If there was an error
false would be returned. Resources associated with p_iso are
freed.
*/
bool iso9660_close (iso9660_t * p_iso);
/*!
Open an ISO 9660 image for reading. Maybe in the future we will have
a mode. NULL is returned on error.
@param psz_path full path of ISO9660 file.
@return a IS9660 structure is unconditionally returned. The caller
should call iso9660_close() when done.
*/
iso9660_t *iso9660_open (const char *psz_path /*flags, mode */);
/*!
Open an ISO 9660 image for reading allowing various ISO 9660
extensions. Maybe in the future we will have a mode. NULL is
returned on error.
@see iso9660_open_fuzzy
*/
iso9660_t *iso9660_open_ext (const char *psz_path,
iso_extension_mask_t iso_extension_mask);
/*! Open an ISO 9660 image for "fuzzy" reading. This means that we
will try to guess various internal offset based on internal
checks. This may be useful when trying to read an ISO 9660 image
contained in a file format that libiso9660 doesn't know natively
(or knows imperfectly.)
Some tolerance allowed for positioning the ISO 9660 image. We scan
for STANDARD_ID and use that to set the eventual offset to adjust
by (as long as that is <= i_fuzz).
Maybe in the future we will have a mode. NULL is returned on error.
@see iso9660_open, @see iso9660_fuzzy_ext
*/
iso9660_t *iso9660_open_fuzzy (const char *psz_path /*flags, mode */,
uint16_t i_fuzz);
/*!
Open an ISO 9660 image for reading with some tolerance for positioning
of the ISO9660 image. We scan for ISO_STANDARD_ID and use that to set
the eventual offset to adjust by (as long as that is <= i_fuzz).
Maybe in the future we will have a mode. NULL is returned on error.
@see iso9660_open_ext @see iso9660_open_fuzzy
*/
iso9660_t *iso9660_open_fuzzy_ext (const char *psz_path,
iso_extension_mask_t iso_extension_mask,
uint16_t i_fuzz
/*flags, mode */);
/*!
Read the Super block of an ISO 9660 image but determine framesize
and datastart and a possible additional offset. Generally here we are
not reading an ISO 9660 image but a CD-Image which contains an ISO 9660
filesystem.
*/
bool iso9660_ifs_fuzzy_read_superblock (iso9660_t *p_iso,
iso_extension_mask_t iso_extension_mask,
uint16_t i_fuzz);
/*!
Seek to a position and then read i_size blocks.
@param p_iso the ISO-9660 file image to get data from
@param ptr place to put returned data. It should be able to store
a least i_size bytes
@param start location to start reading from
@param i_size number of blocks to read. Each block is ISO_BLOCKSIZE bytes
long.
@return number of bytes (not blocks) read
*/
long int iso9660_iso_seek_read (const iso9660_t *p_iso, /*out*/ void *ptr,
lsn_t start, long int i_size);
/*!
Read the Primary Volume Descriptor for a CD.
True is returned if read, and false if there was an error.
*/
bool iso9660_fs_read_pvd ( const CdIo_t *p_cdio,
/*out*/ iso9660_pvd_t *p_pvd );
/*!
Read the Primary Volume Descriptor for an ISO 9660 image.
True is returned if read, and false if there was an error.
*/
bool iso9660_ifs_read_pvd (const iso9660_t *p_iso,
/*out*/ iso9660_pvd_t *p_pvd);
/*!
Read the Super block of an ISO 9660 image. This is the
Primary Volume Descriptor (PVD) and perhaps a Supplemental Volume
Descriptor if (Joliet) extensions are acceptable.
*/
bool iso9660_fs_read_superblock (CdIo_t *p_cdio,
iso_extension_mask_t iso_extension_mask);
/*!
Read the Super block of an ISO 9660 image. This is the
Primary Volume Descriptor (PVD) and perhaps a Supplemental Volume
Descriptor if (Joliet) extensions are acceptable.
*/
bool iso9660_ifs_read_superblock (iso9660_t *p_iso,
iso_extension_mask_t iso_extension_mask);
/*====================================================
Time conversion
====================================================*/
/*!
Set time in format used in ISO 9660 directory index record
from a Unix time structure.
*/
void iso9660_set_dtime (const struct tm *tm,
/*out*/ iso9660_dtime_t *idr_date);
/*!
Set time in format used in ISO 9660 directory index record
from a Unix time structure. timezone is given as an offset
correction in minutes.
*/
void iso9660_set_dtime_with_timezone (const struct tm *p_tm,
int timezone,
/*out*/ iso9660_dtime_t *p_idr_date);
/*!
Set "long" time in format used in ISO 9660 primary volume descriptor
from a Unix time structure. */
void iso9660_set_ltime (const struct tm *_tm,
/*out*/ iso9660_ltime_t *p_pvd_date);
/*!
Set "long" time in format used in ISO 9660 primary volume descriptor
from a Unix time structure. */
void iso9660_set_ltime_with_timezone (const struct tm *_tm,
int timezone,
/*out*/ iso9660_ltime_t *p_pvd_date);
/*!
Get Unix time structure from format use in an ISO 9660 directory index
record. Even though tm_wday and tm_yday fields are not explicitly in
idr_date, they are calculated from the other fields.
If tm is to reflect the localtime, set "b_localtime" true, otherwise
tm will reported in GMT.
*/
bool iso9660_get_dtime (const iso9660_dtime_t *idr_date, bool b_localtime,
/*out*/ struct tm *p_tm);
/*!
Get "long" time in format used in ISO 9660 primary volume descriptor
from a Unix time structure.
*/
bool iso9660_get_ltime (const iso9660_ltime_t *p_ldate,
/*out*/ struct tm *p_tm);
/*====================================================
Character Classification and String Manipulation
====================================================*/
/*!
Return true if c is a DCHAR - a character that can appear in an an
ISO-9600 level 1 directory name. These are the ASCII capital
letters A-Z, the digits 0-9 and an underscore.
*/
bool iso9660_is_dchar (int c);
/*!
Return true if c is an ACHAR -
These are the DCHAR's plus some ASCII symbols including the space
symbol.
*/
bool iso9660_is_achar (int c);
/*!
Convert an ISO-9660 file name which is in the format usually stored
in a ISO 9660 directory entry into what's usually listed as the
file name in a listing. Lowercase name, and remove trailing ;1's
or .;1's and turn the other ;'s into version numbers.
@param psz_oldname the ISO-9660 filename to be translated.
@param psz_newname returned string. The caller allocates this and
it should be at least the size of psz_oldname.
@return length of the translated string is returned.
*/
int iso9660_name_translate(const char *psz_oldname,
/*out*/ char *psz_newname);
/*!
Convert an ISO-9660 file name which is in the format usually stored
in a ISO 9660 directory entry into what's usually listed as the
file name in a listing. Lowercase name if no Joliet Extension
interpretation. Remove trailing ;1's or .;1's and turn the other
;'s into version numbers.
@param psz_oldname the ISO-9660 filename to be translated.
@param psz_newname returned string. The caller allocates this and
it should be at least the size of psz_oldname.
@param i_joliet_level 0 if not using Joliet Extension. Otherwise the
Joliet level.
@return length of the translated string is returned. It will be no greater
than the length of psz_oldname.
*/
int iso9660_name_translate_ext(const char *psz_oldname, char *psz_newname,
uint8_t i_joliet_level);
/*!
Pad string src with spaces to size len and copy this to dst. If
len is less than the length of src, dst will be truncated to the
first len characters of src.
src can also be scanned to see if it contains only ACHARs, DCHARs,
7-bit ASCII chars depending on the enumeration _check.
In addition to getting changed, dst is the return value.
Note: this string might not be NULL terminated.
*/
char *iso9660_strncpy_pad(char dst[], const char src[], size_t len,
enum strncpy_pad_check _check);
/*=====================================================================
File and Directory Names
======================================================================*/
/*!
Check that psz_path is a valid ISO-9660 directory name.
A valid directory name should not start out with a slash (/),
dot (.) or null byte, should be less than 37 characters long,
have no more than 8 characters in a directory component
which is separated by a /, and consist of only DCHARs.
True is returned if psz_path is valid.
*/
bool iso9660_dirname_valid_p (const char psz_path[]);
/*!
Take psz_path and a version number and turn that into a ISO-9660
pathname. (That's just the pathname followed by ";" and the version
number. For example, mydir/file.ext -> MYDIR/FILE.EXT;1 for version
1. The resulting ISO-9660 pathname is returned.
*/
char *iso9660_pathname_isofy (const char psz_path[], uint16_t i_version);
/*!
Check that psz_path is a valid ISO-9660 pathname.
A valid pathname contains a valid directory name, if one appears and
the filename portion should be no more than 8 characters for the
file prefix and 3 characters in the extension (or portion after a
dot). There should be exactly one dot somewhere in the filename
portion and the filename should be composed of only DCHARs.
True is returned if psz_path is valid.
*/
bool iso9660_pathname_valid_p (const char psz_path[]);
/*=====================================================================
directory tree
======================================================================*/
void
iso9660_dir_init_new (void *dir, uint32_t self, uint32_t ssize,
uint32_t parent, uint32_t psize,
const time_t *dir_time);
void
iso9660_dir_init_new_su (void *dir, uint32_t self, uint32_t ssize,
const void *ssu_data, unsigned int ssu_size,
uint32_t parent, uint32_t psize,
const void *psu_data, unsigned int psu_size,
const time_t *dir_time);
void
iso9660_dir_add_entry_su (void *dir, const char filename[], uint32_t extent,
uint32_t size, uint8_t file_flags,
const void *su_data,
unsigned int su_size, const time_t *entry_time);
unsigned int
iso9660_dir_calc_record_size (unsigned int namelen, unsigned int su_len);
/*!
Given a directory pointer, find the filesystem entry that contains
lsn and return information about it.
@param p_cdio the CD object to read from
@return stat_t of entry if we found lsn, or NULL otherwise.
Caller must free return value using iso9660_stat_free().
*/
#define iso9660_fs_find_lsn iso9660_find_fs_lsn
iso9660_stat_t *iso9660_fs_find_lsn(CdIo_t *p_cdio, lsn_t i_lsn);
/*!
Given a directory pointer, find the filesystem entry that contains
LSN and return information about it.
@param p_cdio the ISO-9660 file image to get data from.
@param i_lsn the LSN to find
@param ppsz_full_filename the place to store the name of the path that has LSN.
On entry this should point to NULL. If not, the value will be freed.
On exit a value is malloc'd and the caller is responsible for
freeing the result.
@return stat_t of entry if we found lsn, or NULL otherwise.
Caller must free return value using iso9660_stat_free().
*/
iso9660_stat_t *iso9660_fs_find_lsn_with_path(CdIo_t *p_cdio, lsn_t i_lsn,
/*out*/ char **ppsz_full_filename);
/*!
Given a directory pointer, find the filesystem entry that contains
lsn and return information about it.
@param p_iso the ISO-9660 file image to get data from.
@param i_lsn the LSN to find
@return stat_t of entry if we found lsn, or NULL otherwise.
Caller must free return value using iso9660_stat_free().
*/
iso9660_stat_t *iso9660_ifs_find_lsn(iso9660_t *p_iso, lsn_t i_lsn);
/*!
Given a directory pointer, find the filesystem entry that contains
lsn and return information about it.
@param p_iso pointer to iso_t
@param i_lsn LSN to find
@param ppsz_path full path of lsn filename. On entry *ppsz_path should be
NULL. On return it will be allocated an point to the full path of the
file at lsn or NULL if the lsn is not found. You should deallocate
*ppsz_path when you are done using it.
@return stat_t of entry if we found lsn, or NULL otherwise.
Caller must free return value using iso9660_stat_free().
*/
iso9660_stat_t *iso9660_ifs_find_lsn_with_path(iso9660_t *p_iso,
lsn_t i_lsn,
/*out*/ char **ppsz_path);
/*!
Free the passed iso9660_stat_t structure.
@param p_stat iso9660 stat buffer to free.
*/
void iso9660_stat_free(iso9660_stat_t *p_stat);
/*!
Return file status for psz_path. NULL is returned on error.
@param p_cdio the CD object to read from
@param psz_path filename path to look up and get information about
@return ISO 9660 file information. The caller must free the returned
result using iso9660_stat_free().
Important note:
You make get different results looking up "/" versus "/." and the
latter may give more complete information. "/" will take information
from the PVD only, whereas "/." will force a directory read of "/" and
find "." and in that Rock-Ridge information might be found which fills
in more stat information. Ideally iso9660_fs_stat should be fixed.
Patches anyone?
*/
iso9660_stat_t *iso9660_fs_stat (CdIo_t *p_cdio, const char psz_path[]);
/*!
Return file status for path name psz_path. NULL is returned on error.
pathname version numbers in the ISO 9660 name are dropped, i.e. ;1
is removed and if level 1 ISO-9660 names are lowercased.
@param p_cdio the CD object to read from
@param psz_path filename path to look up and get information about
@return ISO 9660 file information. The caller must free the
returned result using iso9660_stat_free().
*/
iso9660_stat_t *iso9660_fs_stat_translate (CdIo_t *p_cdio,
const char psz_path[]);
/*!
@param p_iso the ISO-9660 file image to get data from
@param psz_path path the look up
@return file status for pathname. NULL is returned on error.
The caller must free the returned result using iso9660_stat_free().
*/
iso9660_stat_t *iso9660_ifs_stat (iso9660_t *p_iso, const char psz_path[]);
/*!
@param p_iso the ISO-9660 file image to get data from
@param psz_path filename path translate
@return file status for path name psz_path. NULL is returned on
error. pathname version numbers in the ISO 9660 name are dropped,
i.e. ;1 is removed and if level 1 ISO-9660 names are lowercased.
The caller must free the returned result using iso9660_stat_free().
*/
iso9660_stat_t *iso9660_ifs_stat_translate (iso9660_t *p_iso,
const char psz_path[]);
/*!
Create a new data structure to hold a list of
ISO9660 statbuf-entry pointers for the files inside
a directory.
@return allocated list. Free with iso9660_filelist_free()
*/
CdioISO9660FileList_t * iso9660_filelist_new(void);
/*!
Create a new data structure to hold a list of
ISO9660 statbuf entries for directory
pointers for the files inside a directory.
@return allocated list. Free with iso9660_dirlist_free()
*/
CdioISO9660DirList_t * iso9660_dirlist_new(void);
/*!
Free the passed CdioISOC9660FileList_t structure.
*/
void iso9660_filelist_free(CdioISO9660FileList_t *p_filelist);
/*!
Free the passed CdioISOC9660Dirlist_t structure.
*/
void iso9660_dirlist_free(CdioISO9660DirList_t *p_filelist);
/*!
Read psz_path (a directory) and return a list of iso9660_stat_t
pointers for the files inside that directory.
@param p_cdio the CD object to read from
@param psz_path path the read the directory from.
@return file status for psz_path. The caller must free the
The caller must free the returned result using iso9660_stat_free().
*/
CdioList_t * iso9660_fs_readdir (CdIo_t *p_cdio, const char psz_path[]);
/*!
Read psz_path (a directory) and return a list of iso9660_stat_t
pointers for the files inside that directory.
@param p_iso the ISO-9660 file image to get data from
@param psz_path path the read the directory from.
@return file status for psz_path. The caller must free the
The caller must free the returned result using iso9660_stat_free().
*/
CdioList_t * iso9660_ifs_readdir (iso9660_t *p_iso, const char psz_path[]);
/*!
Return the PVD's application ID.
@param p_pvd the PVD to get data from
@return the application id.
NULL is returned if there is some problem in getting this.
The caller must free the resturned result using free() if
not null.
*/
char * iso9660_get_application_id(iso9660_pvd_t *p_pvd);
/*!
Return the PVD's application ID.
@param p_iso the ISO-9660 file image to get data from
@param p_psz_app_id the application id set on success.
NULL is returned if there is some problem in getting this.
The caller must free the resturned result using free() if
not null.
*/
bool iso9660_ifs_get_application_id(iso9660_t *p_iso,
/*out*/ cdio_utf8_t **p_psz_app_id);
/*!
Return the Joliet level recognized for p_iso.
*/
uint8_t iso9660_ifs_get_joliet_level(iso9660_t *p_iso);
uint8_t iso9660_get_dir_len(const iso9660_dir_t *p_idr);
#ifdef FIXME
uint8_t iso9660_get_dir_size(const iso9660_dir_t *p_idr);
lsn_t iso9660_get_dir_extent(const iso9660_dir_t *p_idr);
#endif
/*!
Return the directory name stored in the iso9660_dir_t
A string is allocated: the caller must deallocate. This routine
can return NULL if memory allocation fails.
*/
char * iso9660_dir_to_name (const iso9660_dir_t *p_iso9660_dir);
/*!
Returns a POSIX mode for a given p_iso_dirent.
*/
mode_t iso9660_get_posix_filemode(const iso9660_stat_t *p_iso_dirent);
/*!
Return a string containing the preparer id with trailing
blanks removed.
*/
char *iso9660_get_preparer_id(const iso9660_pvd_t *p_pvd);
/*!
Get the preparer ID. psz_preparer_id is set to NULL if there
is some problem in getting this and false is returned.
*/
bool iso9660_ifs_get_preparer_id(iso9660_t *p_iso,
/*out*/ cdio_utf8_t **p_psz_preparer_id);
/*!
Return a string containing the PVD's publisher id with trailing
blanks removed.
*/
char *iso9660_get_publisher_id(const iso9660_pvd_t *p_pvd);
/*!
Get the publisher ID. psz_publisher_id is set to NULL if there
is some problem in getting this and false is returned.
*/
bool iso9660_ifs_get_publisher_id(iso9660_t *p_iso,
/*out*/ cdio_utf8_t **p_psz_publisher_id);
uint8_t iso9660_get_pvd_type(const iso9660_pvd_t *p_pvd);
const char * iso9660_get_pvd_id(const iso9660_pvd_t *p_pvd);
int iso9660_get_pvd_space_size(const iso9660_pvd_t *p_pvd);
int iso9660_get_pvd_block_size(const iso9660_pvd_t *p_pvd) ;
/*! Return the primary volume id version number (of pvd).
If there is an error 0 is returned.
*/
int iso9660_get_pvd_version(const iso9660_pvd_t *pvd) ;
/*!
Return a string containing the PVD's system id with trailing
blanks removed.
*/
char *iso9660_get_system_id(const iso9660_pvd_t *p_pvd);
/*!
Return "yup" if any file has Rock-Ridge extensions. Warning: this can
be time consuming. On an ISO 9600 image with lots of files but no Rock-Ridge
extensions, the entire directory structure will be scanned up to u_file_limit.
@param p_iso the ISO-9660 file image to get data from
@param u_file_limit the maximum number of (non-rock-ridge) files
to consider before giving up and returning "dunno".
"dunno" can also be returned if there was some error encountered
such as not being able to allocate memory in processing.
*/
bool_3way_t iso9660_have_rr(iso9660_t *p_iso, uint64_t u_file_limit);
/*!
Get the system ID. psz_system_id is set to NULL if there
is some problem in getting this and false is returned.
*/
bool iso9660_ifs_get_system_id(iso9660_t *p_iso,
/*out*/ cdio_utf8_t **p_psz_system_id);
/*! Return the LSN of the root directory for pvd.
If there is an error CDIO_INVALID_LSN is returned.
*/
lsn_t iso9660_get_root_lsn(const iso9660_pvd_t *p_pvd);
/*!
Get the volume ID in the PVD. psz_volume_id is set to NULL if there
is some problem in getting this and false is returned.
*/
char *iso9660_get_volume_id(const iso9660_pvd_t *p_pvd);
/*!
Get the volume ID in the PVD. psz_volume_id is set to NULL if there
is some problem in getting this and false is returned.
*/
bool iso9660_ifs_get_volume_id(iso9660_t *p_iso,
/*out*/ cdio_utf8_t **p_psz_volume_id);
/*!
Return the volumeset ID in the PVD.
NULL is returned if there is some problem in getting this.
*/
char *iso9660_get_volumeset_id(const iso9660_pvd_t *p_pvd);
/*!
Get the volumeset ID. psz_systemset_id is set to NULL if there
is some problem in getting this and false is returned.
*/
bool iso9660_ifs_get_volumeset_id(iso9660_t *p_iso,
/*out*/ cdio_utf8_t **p_psz_volumeset_id);
/* pathtable */
/*! Zero's out pathable. Do this first. */
void iso9660_pathtable_init (void *pt);
unsigned int iso9660_pathtable_get_size (const void *pt);
uint16_t iso9660_pathtable_l_add_entry (void *pt, const char name[],
uint32_t extent, uint16_t parent);
uint16_t iso9660_pathtable_m_add_entry (void *pt, const char name[],
uint32_t extent, uint16_t parent);
/**=====================================================================
Volume Descriptors
======================================================================*/
void iso9660_set_pvd (void *pd, const char volume_id[],
const char application_id[],
const char publisher_id[], const char preparer_id[],
uint32_t iso_size, const void *root_dir,
uint32_t path_table_l_extent,
uint32_t path_table_m_extent,
uint32_t path_table_size, const time_t *pvd_time);
void iso9660_set_evd (void *pd);
/*!
Return true if ISO 9660 image has extended attributes (XA).
*/
bool iso9660_ifs_is_xa (const iso9660_t * p_iso);
#ifndef DO_NOT_WANT_COMPATIBILITY
/** For compatibility with < 0.77 */
#define iso9660_isdchar iso9660_is_dchar
#define iso9660_isachar iso9660_is_achar
#endif /*DO_NOT_WANT_COMPATIBILITY*/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#undef ISODCL
#endif /* CDIO_ISO9660_H_ */
/*
* Local variables:
* c-file-style: "gnu"
* tab-width: 8
* indent-tabs-mode: nil
* End:
*/
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