/*

 *  ISO 9660 filesystem backend for GRUB (GRand Unified Bootloader)

 *  including Rock Ridge Extensions support

 *

 *  Copyright (C) 1998, 1999  Kousuke Takai  <[email protected]>

 *

 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

/*

 *  References:

 *	linux/fs/isofs/rock.[ch]

 *	mkisofs-1.11.1/diag/isoinfo.c

 *	mkisofs-1.11.1/iso9660.h

 *		(all are written by Eric Youngdale)

 */

#ifndef _ISO9660_H_

#define _ISO9660_H_

#define ISO_SECTOR_BITS              (11)

#define ISO_SECTOR_SIZE              (1<<ISO_SECTOR_BITS)

#define	ISO_REGULAR	1	/* regular file	*/

#define	ISO_DIRECTORY	2	/* directory	*/

#define	ISO_OTHER	0	/* other file (with Rock Ridge) */

#define	RR_FLAG_PX	0x01	/* have POSIX file attributes */

#define RR_FLAG_PN	0x02	/* POSIX devices */

#define RR_FLAG_SL	0x04	/* Symbolic link */

#define	RR_FLAG_NM	0x08	/* have alternate file name   */

#define RR_FLAG_CL	0x10	/* Child link */

#define RR_FLAG_PL	0x20	/* Parent link */

#define RR_FLAG_RE	0x40	/* Relocation directory */

#define RR_FLAG_TF	0x80	/* Timestamps */

/* POSIX file attributes for Rock Ridge extensions */

#define	POSIX_S_IFMT	0xF000

#define	POSIX_S_IFREG	0x8000

#define	POSIX_S_IFDIR	0x4000

/* volume descriptor types */

#define ISO_VD_PRIMARY 1

#define ISO_VD_END 255

#define ISO_STANDARD_ID "CD001"

#ifndef ASM_FILE

#ifndef __sun

#ifndef	__BIT_TYPES_DEFINED__

typedef		 int	 int8_t	__attribute__((mode(QI)));

typedef unsigned int   u_int8_t	__attribute__((mode(QI)));

typedef		 int	int16_t	__attribute__((mode(HI)));

typedef unsigned int  u_int16_t	__attribute__((mode(HI)));

typedef		 int	int32_t	__attribute__((mode(SI)));

typedef unsigned int  u_int32_t	__attribute__((mode(SI)));

#endif

#else

#ifndef GRUB_UTIL

typedef		 char  int8_t;

typedef		 short int16_t;

typedef		 int   int32_t;

#endif /* ! GRUB_UTIL */

typedef unsigned char  u_int8_t;

typedef unsigned short u_int16_t;

typedef unsigned int   u_int32_t;

#endif /* __sun */

typedef	union {

  u_int8_t l,b;

}	iso_8bit_t;

struct __iso_16bit {

  u_int16_t l, b;

} __attribute__ ((packed));

typedef	struct __iso_16bit iso_16bit_t;

struct __iso_32bit {

  u_int32_t l, b;

} __attribute__ ((packed));

typedef	struct __iso_32bit iso_32bit_t;

typedef u_int8_t		iso_date_t[7];

struct iso_directory_record {

  iso_8bit_t	length;

  iso_8bit_t	ext_attr_length;

  iso_32bit_t	extent;

  iso_32bit_t	size;

  iso_date_t	date;

  iso_8bit_t	flags;

  iso_8bit_t	file_unit_size;

  iso_8bit_t	interleave;

  iso_16bit_t	volume_seq_number;

  iso_8bit_t	name_len;

  u_int8_t	name[1];

} __attribute__ ((packed));

struct iso_primary_descriptor {

  iso_8bit_t	type;

  u_int8_t	id[5];

  iso_8bit_t	version;

  u_int8_t	_unused1[1];

  u_int8_t	system_id[32];

  u_int8_t	volume_id[32];

  u_int8_t	_unused2[8];

  iso_32bit_t	volume_space_size;

  u_int8_t	_unused3[32];

  iso_16bit_t	volume_set_size;

  iso_16bit_t	volume_seq_number;

  iso_16bit_t	logical_block_size;

  iso_32bit_t	path_table_size;

  u_int8_t	type_l_path_table[4];

  u_int8_t	opt_type_l_path_table[4];

  u_int8_t	type_m_path_table[4];

  u_int8_t	opt_type_m_path_table[4];

  struct iso_directory_record root_directory_record;

  u_int8_t	volume_set_id[128];

  u_int8_t	publisher_id[128];

  u_int8_t	preparer_id[128];

  u_int8_t	application_id[128];

  u_int8_t	copyright_file_id[37];

  u_int8_t	abstract_file_id[37];

  u_int8_t	bibliographic_file_id[37];

  u_int8_t	creation_date[17];

  u_int8_t	modification_date[17];

  u_int8_t	expiration_date[17];

  u_int8_t	effective_date[17];

  iso_8bit_t	file_structure_version;

  u_int8_t	_unused4[1];

  u_int8_t	application_data[512];

  u_int8_t	_unused5[653];

} __attribute__ ((packed));

struct rock_ridge {

  u_int16_t	signature;

  u_int8_t	len;

  u_int8_t	version;

  union {

    struct SP {

      u_int16_t	magic;

      u_int8_t	skip;

    } sp;

    struct CE {

      iso_32bit_t	extent;

      iso_32bit_t	offset;

      iso_32bit_t	size;

    } ce;

    struct ER {

      u_int8_t	len_id;

      u_int8_t	len_des;

      u_int8_t	len_src;

      u_int8_t	ext_ver;

      u_int8_t	data[0];

    } er;

    struct RR {

      iso_8bit_t	flags;

    } rr;

    struct PX {

      iso_32bit_t	mode;

      iso_32bit_t	nlink;

      iso_32bit_t	uid;

      iso_32bit_t	gid;

    } px;

    struct PN {

      iso_32bit_t	dev_high;

      iso_32bit_t	dev_low;

    } pn;

    struct SL {

      iso_8bit_t flags;

      struct SL_component {

	iso_8bit_t	flags;

	u_int8_t		len;

	u_int8_t		text[0];

      } link;

    } sl;

    struct NM {

      iso_8bit_t	flags;

      u_int8_t	name[0];

    } nm;

    struct CL {

      iso_32bit_t	location;

    } cl;

    struct PL {

      iso_32bit_t	location;

    } pl;

    struct TF {

      iso_8bit_t	flags;

      iso_date_t	times[0];

    } tf;

  } u;

} __attribute__ ((packed));

typedef	union RR_ptr {

  struct rock_ridge *rr;

  char		  *ptr;

  int		   i;

} RR_ptr_t;

#define	RRMAGIC(c1, c2)	((c1)|(c2) << 8)

#define	CHECK2(ptr, c1, c2) \

	(*(unsigned short *)(ptr) == (((c1) | (c2) << 8) & 0xFFFF))

#endif /* !ASM_FILE */

#endif /* _ISO9660_H_ */