 /* 
  Copyright (c) 2005, 2006 Rocky Bernstein <rocky@cpan.org>
  Copyright (c) 2001-2002  Ben Fennema <bfennema@falcon.csc.calpoly.edu>
    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 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, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*
 * Some portions taken from FreeBSD ecma167-udf.h which states:
 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*!
 * \file ecma_167.h
 *
 * \brief Definitions based on ECMA-167 3rd edition (June 1997)
 * See http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-167.pdf
*/

#ifndef _ECMA_167_H
#define _ECMA_167_H 1

#include <cdio/types.h>

/**
   Imagine the below enum values as \#define'd values rather than
   distinct values of an enum.
*/
typedef enum {
  VSD_STD_ID_SIZE    =	  5, /** Volume Structure Descriptor (ECMA 167r3 
				2/9.1) */
  UDF_REGID_ID_SIZE  =	 23, /**< See identifier (ECMA 167r3 1/7.4) */
  UDF_VOLID_SIZE     =   32,
  UDF_FID_SIZE	     =   38,
  UDF_VOLSET_ID_SIZE =  128
} ecma_167_enum1_t ;

/** Tag Identifier (ECMA 167r3 3/7.2.1) */

typedef enum {
  TAGID_PRI_VOL          = 0x0001,
  TAGID_ANCHOR           = 0x0002,
  TAGID_VOL              = 0x0003,
  TAGID_IMP_VOL          = 0x0004,
  TAGID_PARTITION        = 0x0005,
  TAGID_LOGVOL           = 0x0006,
  TAGID_UNALLOC_SPACE    = 0x0007,
  TAGID_TERM             = 0x0008,
  TAGID_LOGVOL_INTEGRITY = 0x0009,
  TAGID_FSD		 = 0x0100,
  TAGID_FID		 = 0x0101,
  TAGID_AED		 = 0x0102,
  TAGID_IE		 = 0x0103,
  TAGID_TE		 = 0x0104,
  TAGID_FILE_ENTRY	 = 0x0105,
  TAGID_EAHD		 = 0x0106,
  TAGID_USE		 = 0x0107,
  TAGID_SBD		 = 0x0108,
  TAGID_PIE		 = 0x0109,
  TAGID_EFE		 = 0x010A,
} tag_id_t ;

/** Character Set Type (ECMA 167r3 1/7.2.1.1) */
typedef enum {
  CHARSPEC_TYPE_CS0 = 0x00,	/**< Section 1/7.2.2 */
  CHARSPEC_TYPE_CS1 = 0x01,	/**< Section 1/7.2.3 */
  CHARSPEC_TYPE_CS2 = 0x02,	/**< Section 1/7.2.4 */
  CHARSPEC_TYPE_CS3 = 0x03,	/**< Section 1/7.2.5 */
  CHARSPEC_TYPE_CS4 = 0x04,	/**< Section 1/7.2.6 */
  CHARSPEC_TYPE_CS5 = 0x05,	/**< Section 1/7.2.7 */
  CHARSPEC_TYPE_CS6 = 0x06,	/**< Section 1/7.2.8 */
  CHARSPEC_TYPE_CS7 = 0x07,	/**< Section 1/7.2.9 */

  CHARSPEC_TYPE_CS8 = 0x08,	/**< Section 1/7.2.10 */
} udf_charspec_enum_t;
  
typedef uint8_t  udf_Uint8_t;  /*! Section 1/7/1.1 */
typedef uint16_t udf_Uint16_t; /*! Section 1/7.1.3 */
typedef uint32_t udf_Uint32_t; /*! Section 1/7.1.5 */
typedef uint64_t udf_Uint64_t; /*! Section 1/7.1.7 */
typedef char	 udf_dstring;  /*! Section 1/7.1.12 */

#define UDF_LENGTH_MASK 0x3fffffff

PRAGMA_BEGIN_PACKED

/** Character set specification (ECMA 167r3 1/7.2.1) */
struct udf_charspec_s
{
  udf_Uint8_t	charset_type;
  udf_Uint8_t	charset_info[63];
} GNUC_PACKED;

typedef struct udf_charspec_s udf_charspec_t;

/** Timestamp (ECMA 167r3 1/7.3) */
struct udf_timestamp_s
{
  udf_Uint16_t		type_tz;
  udf_Uint16_t		year;
  udf_Uint8_t		month;
  udf_Uint8_t		day;
  udf_Uint8_t		hour;
  udf_Uint8_t		minute;
  udf_Uint8_t		second;
  udf_Uint8_t		centiseconds;
  udf_Uint8_t		hundreds_of_microseconds;
  udf_Uint8_t		microseconds;
} GNUC_PACKED;

typedef struct udf_timestamp_s udf_timestamp_t;

/** Type and Time Zone (ECMA 167r3 1/7.3.1) 

    Imagine the below enum values as \#define'd values rather than
    distinct values of an enum.
*/
typedef enum { 
  TIMESTAMP_TYPE_CUT        =	0x0000,
  TIMESTAMP_TYPE_LOCAL      =	0x1000,
  TIMESTAMP_TYPE_AGREEMENT  =	0x2000,
  TIMESTAMP_TYPE_MASK       =   0xF000,
  TIMESTAMP_TIMEZONE_MASK   =	0x0FFF,
} ecma_167_timezone_enum_t ;


#define TIMESTAMP_TYPE_MASK		0xF000
#define TIMESTAMP_TYPE_CUT		0x0000
#define TIMESTAMP_TYPE_LOCAL		0x1000
#define TIMESTAMP_TYPE_AGREEMENT	0x2000
#define TIMESTAMP_TIMEZONE_MASK		0x0FFF

struct udf_id_suffix_s
{
  udf_Uint16_t  udf_revision;
  udf_Uint8_t   os_class;
  udf_Uint8_t   os_identifier;
  udf_Uint8_t   reserved[4];
} GNUC_PACKED;

typedef struct udf_id_suffix_s udf_id_suffix_t;

/** Entity identifier (ECMA 167r3 1/7.4) */
struct udf_regid_s
{
  udf_Uint8_t		flags;
  udf_Uint8_t		id[UDF_REGID_ID_SIZE];
  udf_id_suffix_t	id_suffix;
} GNUC_PACKED;

typedef struct udf_regid_s udf_regid_t;

/** Flags (ECMA 167r3 1/7.4.1) */
#define ENTITYID_FLAGS_DIRTY		0x00
#define ENTITYID_FLAGS_PROTECTED	0x01

/** Volume Structure Descriptor (ECMA 167r3 2/9.1) */
struct vol_struct_desc_s
{
  udf_Uint8_t		struct_type;
  udf_Uint8_t		std_id[VSD_STD_ID_SIZE];
  udf_Uint8_t		struct_version;
  udf_Uint8_t		struct_data[2041];
} GNUC_PACKED;

/** Standard Identifier (EMCA 167r2 2/9.1.2) */
#define VSD_STD_ID_NSR02		"NSR02"	/* (3/9.1) */

/** Standard Identifier (ECMA 167r3 2/9.1.2) */

/* The below const definitions are to faciltate debugging of the
   values #define'd below. */
extern const char VSD_STD_ID_BEA01[sizeof("BEA01")-1];
extern const char VSD_STD_ID_BOOT2[sizeof("BOOT2")-1];
extern const char VSD_STD_ID_CD001[sizeof("CD001")-1];
extern const char VSD_STD_ID_CDW01[sizeof("CDW02")-1];
extern const char VSD_STD_ID_NSR03[sizeof("NSR03")-1];
extern const char VSD_STD_ID_TEA01[sizeof("TEA01")-1];

#define VSD_STD_ID_BEA01		"BEA01"	/**< ECMA-167 2/9.2 */
#define VSD_STD_ID_BOOT2		"BOOT2"	/**< ECMA-167 2/9.4 */
#define VSD_STD_ID_CD001		"CD001"	/**< ECMA-119 */
#define VSD_STD_ID_CDW02		"CDW02"	/**< ECMA-168 */
#define VSD_STD_ID_NSR02                "NSR02" /**< ECMA-167, 3/9.1 
					       NOTE: ECMA-167, 2nd edition */
#define VSD_STD_ID_NSR03		"NSR03"	/**< ECMA-167 3/9.1 */
#define VSD_STD_ID_TEA01		"TEA01"	/**< ECMA-168 2/9.3 */

/** Beginning Extended Area Descriptor (ECMA 167r3 2/9.2) */
struct beginning_extended_area_desc_s
{
  udf_Uint8_t		struct_type;
  udf_Uint8_t		std_id[VSD_STD_ID_SIZE];
  udf_Uint8_t		struct_version;
  udf_Uint8_t		struct_data[2041];
} GNUC_PACKED;

/** Terminating Extended Area Descriptor (ECMA 167r3 2/9.3) */
struct terminating_extended_area_desc_s
{
  udf_Uint8_t		struct_type;
  udf_Uint8_t		std_id[VSD_STD_ID_SIZE];
  udf_Uint8_t		struct_version;
  udf_Uint8_t		struct_data[2041];
} GNUC_PACKED;

/** Boot Descriptor (ECMA 167r3 2/9.4) */
struct boot_desc_s
{
  udf_Uint8_t		struct_type;
  udf_Uint8_t		std_ident[VSD_STD_ID_SIZE];
  udf_Uint8_t		struct_version;
  udf_Uint8_t		reserved1;
  udf_regid_t		arch_type;
  udf_regid_t		boot_ident;
  udf_Uint32_t		bool_ext_location;
  udf_Uint32_t		bool_ext_length;
  udf_Uint64_t		load_address;
  udf_Uint64_t		start_address;
  udf_timestamp_t	desc_creation_time;
  udf_Uint16_t		flags;
  udf_Uint8_t		reserved2[32];
  udf_Uint8_t		boot_use[1906];
} GNUC_PACKED;

/** Flags (ECMA 167r3 2/9.4.12) */
#define BOOT_FLAGS_ERASE		0x01

/** Extent Descriptor (ECMA 167r3 3/7.1) */
struct udf_extent_ad_s
{
  udf_Uint32_t		len;
  udf_Uint32_t		loc;
} GNUC_PACKED;

typedef struct udf_extent_ad_s udf_extent_ad_t;

/** Descriptor Tag (ECMA 167r3 3/7.2) */
struct udf_tag_s
{
  udf_Uint16_t		id;
  udf_Uint16_t		desc_version;
  udf_Uint8_t		cksum;
  udf_Uint8_t		reserved;
  udf_Uint16_t		i_serial;
  udf_Uint16_t		desc_CRC;
  udf_Uint16_t		desc_CRC_len;
  udf_Uint32_t		loc;
} GNUC_PACKED;

typedef struct udf_tag_s udf_tag_t;

/** NSR Descriptor (ECMA 167r3 3/9.1) */
struct NSR_desc_s
{
  udf_Uint8_t	struct_type;
  udf_Uint8_t	std_id[VSD_STD_ID_SIZE];
  udf_Uint8_t	struct_version;
  udf_Uint8_t	reserved;
  udf_Uint8_t	struct_data[2040];
} GNUC_PACKED;

/** Primary Volume Descriptor (ECMA 167r3 3/10.1) */
struct udf_pvd_s
{
  udf_tag_t	  tag;
  udf_Uint32_t	  vol_desc_seq_num;
  udf_Uint32_t	  primary_vol_desc_num;
  udf_dstring	  vol_ident[UDF_VOLID_SIZE];
  udf_Uint16_t	  vol_seq_num;
  udf_Uint16_t	  max_vol_seqnum;
  udf_Uint16_t	  interchange_lvl;
  udf_Uint16_t	  max_interchange_lvl;
  udf_Uint32_t	  charset_list;
  udf_Uint32_t	  max_charset_list;
  udf_dstring	  volset_id[UDF_VOLSET_ID_SIZE];
  udf_charspec_t  desc_charset;
  udf_charspec_t  explanatory_charset;
  udf_extent_ad_t vol_abstract;
  udf_extent_ad_t vol_copyright;
  udf_regid_t	  app_ident;
  udf_timestamp_t recording_time;
  udf_regid_t	  imp_ident;
  udf_Uint8_t	  imp_use[64];
  udf_Uint32_t	  predecessor_vol_desc_seq_location;
  udf_Uint16_t	  flags;
  udf_Uint8_t	  reserved[22];
} GNUC_PACKED;

typedef struct udf_pvd_s udf_pvd_t;

/** Flags (ECMA 167r3 3/10.1.21) */
#define PVD_FLAGS_VSID_COMMON		0x0001

/** Anchor Volume Descriptor Pointer (ECMA 167r3 3/10.2) */
struct anchor_vol_desc_ptr_s
{
  udf_tag_t	  tag;
  udf_extent_ad_t main_vol_desc_seq_ext;
  udf_extent_ad_t reserve_vol_desc_seq_ext;
  udf_Uint8_t	  reserved[480];
} GNUC_PACKED;

typedef struct anchor_vol_desc_ptr_s anchor_vol_desc_ptr_t;

/** Volume Descriptor Pointer (ECMA 167r3 3/10.3) */
struct vol_desc_ptr_s
{
  udf_tag_t	  tag;
  udf_Uint32_t	  vol_desc_seq_num;
  udf_extent_ad_t next_vol_desc_set_ext;
  udf_Uint8_t	  reserved[484];
} GNUC_PACKED;

/** Implementation Use Volume Descriptor (ECMA 167r3 3/10.4) */
struct imp_use_vol_desc_s
{
  udf_tag_t    tag;
  udf_Uint32_t vol_desc_seq_num;
  udf_regid_t  imp_id;
  udf_Uint8_t  imp_use[460];
} GNUC_PACKED;

/** Partition Descriptor (ECMA 167r3 3/10.5) */
struct partition_desc_s
{
  udf_tag_t     tag;
  udf_Uint32_t	vol_desc_seq_num;
  udf_Uint16_t	flags;
  udf_Uint16_t	number;             /**< Partition number */
  udf_regid_t	contents;
  udf_Uint8_t	contents_use[128];
  udf_Uint32_t	access_type;
  udf_Uint32_t	start_loc;
  udf_Uint32_t	part_len;
  udf_regid_t	imp_id;
  udf_Uint8_t	imp_use[128];
  udf_Uint8_t	reserved[156];
} GNUC_PACKED;

typedef struct partition_desc_s partition_desc_t;

/** Partition Flags (ECMA 167r3 3/10.5.3) */
#define PD_PARTITION_FLAGS_ALLOC	0x0001

/** Partition Contents (ECMA 167r2 3/10.5.3) */
#define PD_PARTITION_CONTENTS_NSR02	"+NSR02"

/** Partition Contents (ECMA 167r3 3/10.5.5) */
#define PD_PARTITION_CONTENTS_FDC01	"+FDC01"
#define PD_PARTITION_CONTENTS_CD001	"+CD001"
#define PD_PARTITION_CONTENTS_CDW02	"+CDW02"
#define PD_PARTITION_CONTENTS_NSR03	"+NSR03"

/** Access Type (ECMA 167r3 3/10.5.7) */
#define PD_ACCESS_TYPE_NONE		0x00000000
#define PD_ACCESS_TYPE_READ_ONLY	0x00000001
#define PD_ACCESS_TYPE_WRITE_ONCE	0x00000002
#define PD_ACCESS_TYPE_REWRITABLE	0x00000003
#define PD_ACCESS_TYPE_OVERWRITABLE	0x00000004

/** Recorded Address (ECMA 167r3 4/7.1) */
struct udf_lb_addr_s
{
  udf_Uint32_t	lba;
  udf_Uint16_t	partitionReferenceNum;
} GNUC_PACKED;

typedef struct udf_lb_addr_s udf_lb_addr_t;

/** Short Allocation Descriptor (ECMA 167r3 4/14.14.1) */
struct udf_short_ad_s
{
  udf_Uint32_t	len;
  udf_Uint32_t	pos;
} GNUC_PACKED;

typedef struct udf_short_ad_s udf_short_ad_t;

/** Long Allocation Descriptor (ECMA 167r3 4/14.14.2) */
struct udf_long_ad_s
{
  udf_Uint32_t	len;
  udf_lb_addr_t	loc;
  udf_Uint8_t	imp_use[6];
} GNUC_PACKED;

typedef struct udf_long_ad_s udf_long_ad_t;

/** Logical Volume Descriptor (ECMA 167r3 3/10.6) */
struct logical_vol_desc_s
{
  udf_tag_t       tag;
  udf_Uint32_t	  seq_num;
  udf_charspec_t  desc_charset;
  udf_dstring	  logvol_id[128];
  udf_Uint32_t	  logical_blocksize;
  udf_regid_t	  domain_id;
  union {
    udf_long_ad_t fsd_loc;
    udf_Uint8_t	  logvol_content_use[16];
  } lvd_use;
  udf_Uint8_t	  logvol_contents_use[16];
  udf_Uint32_t	  maptable_len;
  udf_Uint32_t	  i_partition_maps;
  udf_regid_t	  imp_id;
  udf_Uint8_t	  imp_use[128];
  udf_extent_ad_t integrity_seq_ext;
  udf_Uint8_t	  partition_maps[0];
} GNUC_PACKED;

typedef struct logical_vol_desc_s logical_vol_desc_t;

/** Generic Partition Map (ECMA 167r3 3/10.7.1) */
struct generic_partition_map
{
  udf_Uint8_t	partition_map_type;
  udf_Uint8_t	partition_map_length;
  udf_Uint8_t	partition_mapping[0];
} GNUC_PACKED;

/** Partition Map Type (ECMA 167r3 3/10.7.1.1) */
#define GP_PARTITION_MAP_TYPE_UNDEF	0x00
#define GP_PARTIITON_MAP_TYPE_1		0x01
#define GP_PARTITION_MAP_TYPE_2		0x02

/** Type 1 Partition Map (ECMA 167r3 3/10.7.2) */
struct generic_partition_map1
{
  udf_Uint8_t	partition_map_type;
  udf_Uint8_t	partition_map_length;
  udf_Uint16_t	vol_seq_num;
  udf_Uint16_t	i_partition;
} GNUC_PACKED;

/** Type 2 Partition Map (ECMA 167r3 3/10.7.3) */
struct generic_partition_map2
{
  udf_Uint8_t	partition_map_type;
  udf_Uint8_t	partition_map_length; 
  udf_Uint8_t	partition_id[62];
} GNUC_PACKED;

/** Unallocated Space Descriptor (ECMA 167r3 3/10.8) */
struct unalloc_space_desc_s
{
  udf_tag_t       tag;
  udf_Uint32_t	  vol_desc_seq_num;
  udf_Uint32_t	  i_alloc_descs;
  udf_extent_ad_t allocDescs[0];
} GNUC_PACKED;

/** Terminating Descriptor (ECMA 167r3 3/10.9) */
struct terminating_desc_s
{
  udf_tag_t    tag;
  udf_Uint8_t	reserved[496];
} GNUC_PACKED;

/** Logical Volume Integrity Descriptor (ECMA 167r3 3/10.10) */
struct logvol_integrity_desc_s
{
  udf_tag_t       tag;
  udf_timestamp_t recording_time;
  udf_Uint32_t    integrity_type;
  udf_extent_ad_t next_integrity_ext;
  udf_Uint8_t     logvol_contents_use[32];
  udf_Uint32_t    i_partitions;
  udf_Uint32_t    imp_use_len;
  udf_Uint32_t    freespace_table[0];
  udf_Uint32_t    size_table[0];
  udf_Uint8_t     imp_use[0];
} GNUC_PACKED;

/** Integrity Type (ECMA 167r3 3/10.10.3) */
#define LVID_INTEGRITY_TYPE_OPEN	0x00000000
#define LVID_INTEGRITY_TYPE_CLOSE	0x00000001

/** Extended Allocation Descriptor (ECMA 167r3 4/14.14.3) */
struct udf_ext_ad_s
{
  udf_Uint32_t	len;
  udf_Uint32_t	recorded_len;
  udf_Uint32_t	information_len;
  udf_lb_addr_t	ext_loc;
} GNUC_PACKED;

typedef struct udf_ext_ad_s udf_ext_ad_t;

/** Descriptor Tag (ECMA 167r3 4/7.2 - See 3/7.2) */

/** Tag Identifier (ECMA 167r3 4/7.2.1) */

/** File Set Descriptor (ECMA 167r3 4/14.1) */
struct udf_fsd_s
{
  udf_tag_t       tag;
  udf_timestamp_t recording_time;
  udf_Uint16_t	  interchange_lvl;
  udf_Uint16_t	  maxInterchange_lvl;
  udf_Uint32_t	  charset_list;
  udf_Uint32_t	  max_charset_list;
  udf_Uint32_t	  fileset_num;
  udf_Uint32_t	  udf_fsd_num;
  udf_charspec_t  logical_vol_id_charset;
  udf_dstring	  logical_vol_id[128];
  udf_charspec_t  fileset_charset;
  udf_dstring	  fileSet_id[32];
  udf_dstring	  copyright_file_id[32];
  udf_dstring	  abstract_file_id[32];
  udf_long_ad_t	  root_icb;
  udf_regid_t	  domain_id;
  udf_long_ad_t	  next_ext;
  udf_long_ad_t	  stream_directory_ICB;
  udf_Uint8_t	  reserved[32];
} GNUC_PACKED;

typedef struct udf_fsd_s udf_fsd_t;

/** Partition Header Descriptor (ECMA 167r3 4/14.3) */
struct partition_header_desc_s
{
  udf_short_ad_t unalloc_space_table;
  udf_short_ad_t unalloc_space_bitmap;
  udf_short_ad_t partition_integrity_table;
  udf_short_ad_t freed_space_table;
  udf_short_ad_t freed_space_bitmap;
  udf_Uint8_t	 reserved[88];
} GNUC_PACKED;

typedef struct partition_header_desc_s partition_header_desc_t;

/** File Identifier Descriptor (ECMA 167r3 4/14.4) */
struct udf_fileid_desc_s
{
  udf_tag_t     tag;
  udf_Uint16_t	file_version_num;
  udf_Uint8_t	file_characteristics;
  udf_Uint8_t	i_file_id;
  udf_long_ad_t	icb;
  udf_Uint16_t	i_imp_use;
  udf_Uint8_t	imp_use[0];
  udf_Uint8_t	file_id[0];
  udf_Uint8_t	padding[0];
} GNUC_PACKED;

typedef struct udf_fileid_desc_s udf_fileid_desc_t;

/** File Characteristics (ECMA 167r3 4/14.4.3) 

    Imagine the below enumeration values are \#defines to be used in a
    bitmask rather than distinct values of an enum.
*/
typedef enum {
  UDF_FILE_HIDDEN 	= (1 << 0),
  UDF_FILE_DIRECTORY	= (1 << 1),
  UDF_FILE_DELETED 	= (1 << 2),
  UDF_FILE_PARENT 	= (1 << 3),
  UDF_FILE_METADATA	= (1 << 4)
} file_characteristics_t;

/** Allocation Ext Descriptor (ECMA 167r3 4/14.5) */
struct allocExtDesc
{
  udf_tag_t    tag;
  udf_Uint32_t previous_alloc_ext_loc;
  udf_Uint32_t i_alloc_descs;
} GNUC_PACKED;

/** ICB Tag (ECMA 167r3 4/14.6) */
struct udf_icbtag_s
{
  udf_Uint32_t	prev_num_dirs;
  udf_Uint16_t	strat_type;
  udf_Uint16_t	strat_param;
  udf_Uint16_t	max_num_entries;
  udf_Uint8_t	reserved;
  udf_Uint8_t	file_type;
  udf_lb_addr_t	parent_ICB;
  udf_Uint16_t	flags;
} GNUC_PACKED;

typedef struct udf_icbtag_s udf_icbtag_t;

#define	UDF_ICB_TAG_FLAGS_SETUID	0x40
#define	UDF_ICB_TAG_FLAGS_SETGID	0x80
#define	UDF_ICB_TAG_FLAGS_STICKY	0x100

/** Strategy Type (ECMA 167r3 4/14.6.2) which helpfully points
    largely to 4/A.x */
#define ICBTAG_STRATEGY_TYPE_UNDEF 0x0000 
#define ICBTAG_STRATEGY_TYPE_1	   0x0001 /**< 4/A.2 Direct entries Uint16 */
#define ICBTAG_STRATEGY_TYPE_2	   0x0002 /**< 4/A.3 List of ICB direct entries */
#define ICBTAG_STRATEGY_TYPE_3	   0x0003 /**< 4/A.4 */
#define ICBTAG_STRATEGY_TYPE_4	   0x0004 /**< 4/A.5 Hierarchy having one
					   single ICB with one direct entry.
					   This is what's most often used.
					  */

/** File Type (ECMA 167r3 4/14.6.6) 

   Imagine the below enum values as \#define'd values rather than
   distinct values of an enum.
*/
typedef enum {
  ICBTAG_FILE_TYPE_UNDEF =	0x00,
  ICBTAG_FILE_TYPE_USE =	0x01,
  ICBTAG_FILE_TYPE_PIE =	0x02,
  ICBTAG_FILE_TYPE_IE =		0x03,
  ICBTAG_FILE_TYPE_DIRECTORY =	0x04,
  ICBTAG_FILE_TYPE_REGULAR =	0x05,
  ICBTAG_FILE_TYPE_BLOCK =	0x06,
  ICBTAG_FILE_TYPE_CHAR =	0x07,
  ICBTAG_FILE_TYPE_EA =		0x08,
  ICBTAG_FILE_TYPE_FIFO =	0x09,
  ICBTAG_FILE_TYPE_SOCKET =	0x0A,
  ICBTAG_FILE_TYPE_TE =		0x0B,
  ICBTAG_FILE_TYPE_SYMLINK =	0x0C,
  ICBTAG_FILE_TYPE_STREAMDIR =	0x0D
} icbtag_file_type_enum_t;

/** Flags (ECMA 167r3 4/14.6.8) */
typedef enum {
  ICBTAG_FLAG_AD_MASK        =	0x0007, /**< "&" this to get below address
					     flags */
  ICBTAG_FLAG_AD_SHORT       =	0x0000, /**< The allocation descriptor
					     field is filled with
					     short_ad's.  If the
					     offset is beyond the
					     current extent, look for
					     the next extent. */
  ICBTAG_FLAG_AD_LONG        =	0x0001, /**< The allocation descriptor
					     field is filled with
					     long_ad's If the offset
					     is beyond the current
					     extent, look for the next
					     extent. */
  ICBTAG_FLAG_AD_EXTENDED    =	0x0002,
  ICBTAG_FLAG_AD_IN_ICB      =	0x0003, /**< This type means that the
					     file *data* is stored in
					     the allocation descriptor
					     field of the file entry. */
  ICBTAG_FLAG_SORTED         =	0x0008,
  ICBTAG_FLAG_NONRELOCATABLE =	0x0010,
  ICBTAG_FLAG_ARCHIVE        =	0x0020,
  ICBTAG_FLAG_SETUID         =	0x0040,
  ICBTAG_FLAG_SETGID         =	0x0080,
  ICBTAG_FLAG_STICKY         =	0x0100,
  ICBTAG_FLAG_CONTIGUOUS     =	0x0200,
  ICBTAG_FLAG_SYSTEM         =	0x0400,
  ICBTAG_FLAG_TRANSFORMED    =	0x0800,
  ICBTAG_FLAG_MULTIVERSIONS  =	0x1000,
  ICBTAG_FLAG_STREAM =		0x2000
} icbtag_flag_enum_t;
  
/** Indirect Entry (ECMA 167r3 4/14.7) */
struct indirect_entry_s
{
  udf_tag_t       tag;
  udf_icbtag_t	  icb_tag;
  udf_long_ad_t	  indirect_ICB;
} GNUC_PACKED;

/** Terminal Entry (ECMA 167r3 4/14.8) */
struct terminal_entry_s
{
  udf_tag_t       tag;
  udf_icbtag_t	  icb_tag;
} GNUC_PACKED;

/** File Entry (ECMA 167r3 4/14.9) */
struct udf_file_entry_s
{
  udf_tag_t       tag;                   
  udf_icbtag_t	  icb_tag;                /**< 4/14.9.2 */
  udf_Uint32_t	  uid;                    /**< 4/14.9.3 */
  udf_Uint32_t	  gid;                    /**< 4/14.9.4 */
  udf_Uint32_t	  permissions;            /**< 4/14.9.5 */
  udf_Uint16_t	  link_count;             /**< 4/14.9.6 */
  udf_Uint8_t	  rec_format;             /**< 4/14.9.7 */ 
  udf_Uint8_t	  rec_disp_attr;          /**< 4/14.9.8 */
  udf_Uint32_t	  rec_len;                /**< 4/14.9.9 */
  udf_Uint64_t	  info_len;               /**< 4/14.9.10 */
  udf_Uint64_t	  logblks_recorded;       /**< 4/14.9.11 */
  udf_timestamp_t access_time;            /**< 4/14.9.12 - last access to 
					   any stream of file prior to 
					   recording file entry */
  udf_timestamp_t modification_time;      /**< 4/14.9.13 - last access to 
					     modification to any stream of 
					     file */
  udf_timestamp_t attribute_time;
  udf_Uint32_t	  checkpoint;
  udf_long_ad_t	  ext_attr_ICB;
  udf_regid_t	  imp_id;
  udf_Uint64_t	  unique_ID;
  udf_Uint32_t	  i_extended_attr;
  udf_Uint32_t	  i_alloc_descs;
  udf_Uint8_t	  ext_attr[0];
  udf_Uint8_t	  alloc_descs[0];
} GNUC_PACKED;

typedef struct udf_file_entry_s udf_file_entry_t;

#define	UDF_FENTRY_SIZE	176
#define	UDF_FENTRY_PERM_USER_MASK	0x07
#define	UDF_FENTRY_PERM_GRP_MASK	0xE0
#define	UDF_FENTRY_PERM_OWNER_MASK	0x1C00

/** Permissions (ECMA 167r3 4/14.9.5) */
#define FE_PERM_O_EXEC			0x00000001U
#define FE_PERM_O_WRITE			0x00000002U
#define FE_PERM_O_READ			0x00000004U
#define FE_PERM_O_CHATTR		0x00000008U
#define FE_PERM_O_DELETE		0x00000010U
#define FE_PERM_G_EXEC			0x00000020U
#define FE_PERM_G_WRITE			0x00000040U
#define FE_PERM_G_READ			0x00000080U
#define FE_PERM_G_CHATTR		0x00000100U
#define FE_PERM_G_DELETE		0x00000200U
#define FE_PERM_U_EXEC			0x00000400U
#define FE_PERM_U_WRITE			0x00000800U
#define FE_PERM_U_READ			0x00001000U
#define FE_PERM_U_CHATTR		0x00002000U
#define FE_PERM_U_DELETE		0x00004000U

/** Record Format (ECMA 167r3 4/14.9.7) */
#define FE_RECORD_FMT_UNDEF		0x00
#define FE_RECORD_FMT_FIXED_PAD		0x01
#define FE_RECORD_FMT_FIXED		0x02
#define FE_RECORD_FMT_VARIABLE8		0x03
#define FE_RECORD_FMT_VARIABLE16	0x04
#define FE_RECORD_FMT_VARIABLE16_MSB	0x05
#define FE_RECORD_FMT_VARIABLE32	0x06
#define FE_RECORD_FMT_PRINT		0x07
#define FE_RECORD_FMT_LF		0x08
#define FE_RECORD_FMT_CR		0x09
#define FE_RECORD_FMT_CRLF		0x0A
#define FE_RECORD_FMT_LFCR		0x0B

/** Record Display Attributes (ECMA 167r3 4/14.9.8) */
#define FE_RECORD_DISPLAY_ATTR_UNDEF	0x00
#define FE_RECORD_DISPLAY_ATTR_1	0x01
#define FE_RECORD_DISPLAY_ATTR_2	0x02
#define FE_RECORD_DISPLAY_ATTR_3	0x03

/** Extended Attribute Header Descriptor (ECMA 167r3 4/14.10.1) */
struct extended_attr_header_desc_s
{
  udf_tag_t       tag;
  udf_Uint32_t	  imp_attr_location;
  udf_Uint32_t	  app_attr_location;
} GNUC_PACKED;

/** Generic Format (ECMA 167r3 4/14.10.2) */
struct generic_format_s
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint8_t	attrData[0];
} GNUC_PACKED;

/** Character Set Information (ECMA 167r3 4/14.10.3) */
struct charSet_info_s
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint32_t	escapeSeqLength;
  udf_Uint8_t	charSetType;
  udf_Uint8_t	escapeSeq[0];
} GNUC_PACKED;

/* Alternate Permissions (ECMA 167r3 4/14.10.4) */
struct alt_perms_s
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint16_t	owner_id;
  udf_Uint16_t	group_id;
  udf_Uint16_t	permission;
} GNUC_PACKED;

/** File Times Extended Attribute (ECMA 167r3 4/14.10.5) */
struct filetimes_ext_attr_s
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint32_t	dataLength;
  udf_Uint32_t	fileTimeExistence;
  udf_Uint8_t	fileTimes;
} GNUC_PACKED;

/** FileTimeExistence (ECMA 167r3 4/14.10.5.6) */
#define FTE_CREATION			0x00000001
#define FTE_DELETION			0x00000004
#define FTE_EFFECTIVE			0x00000008
#define FTE_BACKUP			0x00000002

/** Information Times Extended Attribute (ECMA 167r3 4/14.10.6) */
struct infoTimesExtAttr
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint32_t	dataLength;
  udf_Uint32_t	infoTimeExistence;
  udf_Uint8_t	infoTimes[0];
} GNUC_PACKED;

/** Device Specification (ECMA 167r3 4/14.10.7) */
struct deviceSpec
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint32_t	imp_useLength;
  udf_Uint32_t	majorDevice_id;
  udf_Uint32_t	minorDevice_id;
  udf_Uint8_t	imp_use[0];
} GNUC_PACKED;

/** Implementation Use Extended Attr (ECMA 167r3 4/14.10.8) */
struct impUseExtAttr
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint32_t	imp_useLength;
  udf_regid_t	imp_id;
  udf_Uint8_t	imp_use[0];
} GNUC_PACKED;

/** Application Use Extended Attribute (ECMA 167r3 4/14.10.9) */
struct appUseExtAttr
{
  udf_Uint32_t	attr_type;
  udf_Uint8_t	attr_subtype;
  udf_Uint8_t	reserved[3];
  udf_Uint32_t	attrLength;
  udf_Uint32_t	appUseLength;
  udf_regid_t	app_id;
  udf_Uint8_t	appUse[0];
} GNUC_PACKED;

#define EXTATTR_CHAR_SET		1
#define EXTATTR_ALT_PERMS		3
#define EXTATTR_FILE_TIMES		5
#define EXTATTR_INFO_TIMES		6
#define EXTATTR_DEV_SPEC		12
#define EXTATTR_IMP_USE			2048
#define EXTATTR_APP_USE			65536


/** Unallocated Space Entry (ECMA 167r3 4/14.11) */
struct unallocSpaceEntry
{
  udf_tag_t     tag;
  udf_icbtag_t	icb_tag;
  udf_Uint32_t	lengthAllocDescs;
  udf_Uint8_t	allocDescs[0];
} GNUC_PACKED;

/** Space Bitmap Descriptor (ECMA 167r3 4/14.12) */
struct spaceBitmapDesc
{
  udf_tag_t     tag;
  udf_Uint32_t	i_bits;
  udf_Uint32_t	i_bytes;
  udf_Uint8_t	bitmap[0];
} GNUC_PACKED;

/** Partition Integrity Entry (ECMA 167r3 4/14.13) */
struct partitionIntegrityEntry
{
  udf_tag_t       tag;
  udf_icbtag_t	  icb_tag;
  udf_timestamp_t recording_time;
  udf_Uint8_t	  integrityType;
  udf_Uint8_t	  reserved[175];
  udf_regid_t	  imp_id;
  udf_Uint8_t	  imp_use[256];
} GNUC_PACKED;

/** Short Allocation Descriptor (ECMA 167r3 4/14.14.1) */

/** Extent Length (ECMA 167r3 4/14.14.1.1) */
#define EXT_RECORDED_ALLOCATED		0x00000000
#define EXT_NOT_RECORDED_ALLOCATED	0x40000000
#define EXT_NOT_RECORDED_NOT_ALLOCATED	0x80000000
#define EXT_NEXT_EXTENT_ALLOCDECS	0xC0000000

/** Long Allocation Descriptor (ECMA 167r3 4/14.14.2) */

/** Extended Allocation Descriptor (ECMA 167r3 4/14.14.3) */

/** Logical Volume Header Descriptor (ECMA 167r3 4/14.15) */
struct logical_vol_header_desc_s 
{
  udf_Uint64_t	uniqueID;
  udf_Uint8_t	reserved[24];
} GNUC_PACKED;

typedef struct logical_vol_header_desc_s logical_vol_header_desc_t;

/** Path Component (ECMA 167r3 4/14.16.1) */
struct pathComponent
{
  udf_Uint8_t	component_type;
  udf_Uint8_t	lengthComponent_id;
  udf_Uint16_t	componentFileVersionNum;
  udf_dstring	component_id[0];
} GNUC_PACKED;

/** File Entry (ECMA 167r3 4/14.17) */
struct extended_file_entry
{
  udf_tag_t 	  tag;                     /**< 4/14.17.1 - id = 266  */
  udf_icbtag_t    icb_tag;                 /**< 4/14.17.2  & 4/14.9.2 */
  udf_Uint32_t    uid;                     /**< 4/14.17.3  & 4/14.9.3 */
  udf_Uint32_t    gid;                     /**< 4/14.17.4  & 4/14.9.4 */
  udf_Uint32_t    permissions;             /**< 4/14.17.5  & 4/14.9.5 */
  udf_Uint16_t    link_count;              /**< 4/14.17.6  & 4/14.9.6 */
  udf_Uint8_t     rec_format;              /**< 4/14.17.7  & 4/14.9.7 */
  udf_Uint8_t     rec_display_attr;        /**< 4/14.17.8  & 4/14.9.8 */
  udf_Uint32_t    record_len;              /**< 4/14.17.9  & 4/14.9.9 */
  udf_Uint64_t    info_len;                /**< 4/14.17.10 & 4/14.9.10 */
  udf_Uint64_t    object_size;             /**< 4/14.17.11 */
  udf_Uint64_t    logblks_recorded;        /**< 4/14.17.12 & 4/14.9.11 */
  udf_timestamp_t access_time;             /**< 4/14.17.13 & 4/14.9.12 - last 
					      access to any stream of file */
  udf_timestamp_t modification_time;       /**< 4/14.17.14 & 4/14.9.13 - last
					      modification to any stream of 
					      file*/
  udf_timestamp_t create_time;             /**< 4/14.17.15 */
  udf_timestamp_t attribute_time;          /**< 4/14.17.16 & 4/14.9.14 - 
					      most recent create or modify 
					      time */
  udf_Uint32_t    checkpoint;
  udf_Uint32_t    reserved;                /**< #00 bytes */
  udf_long_ad_t   ext_attr_ICB;
  udf_long_ad_t   stream_directory_ICB;
  udf_regid_t     imp_id;
  udf_Uint64_t    unique_ID;
  udf_Uint32_t    length_extended_attr;
  udf_Uint32_t    length_alloc_descs;
  udf_Uint8_t     ext_attr[0];
  udf_Uint8_t     alloc_descs[0];
} GNUC_PACKED;

PRAGMA_END_PACKED

/** The below variables are trickery to force the above enum symbol
    values to be recorded in debug symbol tables. They are used to
    allow one refer to the enumeration value names in the typedefs
    above in a debugger and in debugger expressions.
*/
extern tag_id_t                 debug_tagid;
extern file_characteristics_t   debug_file_characteristics;
extern icbtag_file_type_enum_t  debug_icbtag_file_type_enum;
extern icbtag_flag_enum_t       debug_flag_enum;
extern ecma_167_enum1_t         debug_ecma_167_enum1;
extern ecma_167_timezone_enum_t debug_ecma_167_timezone_enum;
  
#endif /* _ECMA_167_H */
