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/*
* ISO 9660 filesystem backend for GRUB (GRand Unified Bootloader)
* including Rock Ridge Extensions support
*
* Copyright (C) 1998, 1999 Kousuke Takai <tak@kmc.kyoto-u.ac.jp>
*
* 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., 51 Franklin Street - Fifth Floor, Boston,
* MA 02110-1301, 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)
*/
/*
* Modified by SONE Takeshi to work with FILO
*/
#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_NM 0x08 /* have alternate file name */
/* 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
typedef union {
uint8_t l,b;
} iso_8bit_t;
typedef struct __iso_16bit {
uint16_t l, b;
} iso_16bit_t;
typedef struct __iso_32bit {
uint32_t l, b;
} iso_32bit_t;
typedef uint8_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;
uint8_t name[1];
} __attribute__ ((packed));
struct iso_primary_descriptor {
iso_8bit_t type;
uint8_t id[5];
iso_8bit_t version;
uint8_t _unused1[1];
uint8_t system_id[32];
uint8_t volume_id[32];
uint8_t _unused2[8];
iso_32bit_t volume_space_size;
uint8_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;
uint8_t type_l_path_table[4];
uint8_t opt_type_l_path_table[4];
uint8_t type_m_path_table[4];
uint8_t opt_type_m_path_table[4];
struct iso_directory_record root_directory_record;
uint8_t volume_set_id[128];
uint8_t publisher_id[128];
uint8_t preparer_id[128];
uint8_t application_id[128];
uint8_t copyright_file_id[37];
uint8_t abstract_file_id[37];
uint8_t bibliographic_file_id[37];
uint8_t creation_date[17];
uint8_t modification_date[17];
uint8_t expiration_date[17];
uint8_t effective_date[17];
iso_8bit_t file_structure_version;
uint8_t _unused4[1];
uint8_t application_data[512];
uint8_t _unused5[653];
} __attribute__ ((packed));
struct rock_ridge {
uint16_t signature;
uint8_t len;
uint8_t version;
union {
struct CE {
iso_32bit_t extent;
iso_32bit_t offset;
iso_32bit_t size;
} ce;
struct NM {
iso_8bit_t flags;
uint8_t name[0];
} nm;
struct PX {
iso_32bit_t mode;
iso_32bit_t nlink;
iso_32bit_t uid;
iso_32bit_t gid;
} px;
struct RR {
iso_8bit_t flags;
} rr;
} u;
} __attribute__ ((packed));
typedef union RR_ptr {
struct rock_ridge *rr;
char *ptr;
int i;
} RR_ptr_t;
#define CHECK2(ptr, c1, c2) \
(*(unsigned char *)(ptr) == (c1) && \
*((unsigned char *)(ptr) + 1) == (c2))
#define CHECK4(ptr, c1, c2, c3, c4) \
(*(unsigned char *)(ptr) == (c1) && \
*((unsigned char *)(ptr) + 1) == (c2) && \
*((unsigned char *)(ptr) + 2) == (c3) && \
*((unsigned char *)(ptr) + 3) == (c4))
#endif /* !ASM_FILE */
#endif /* _ISO9660_H_ */
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