1 /* 2 * ISO 9660 filesystem backend for GRUB (GRand Unified Bootloader) 3 * including Rock Ridge Extensions support 4 * 5 * Copyright (C) 1998, 1999 Kousuke Takai <tak@kmc.kyoto-u.ac.jp> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 /* 22 * References: 23 * linux/fs/isofs/rock.[ch] 24 * mkisofs-1.11.1/diag/isoinfo.c 25 * mkisofs-1.11.1/iso9660.h 26 * (all are written by Eric Youngdale) 27 */ 28 29 #ifndef _ISO9660_H_ 30 #define _ISO9660_H_ 31 32 #define ISO_SECTOR_BITS (11) 33 #define ISO_SECTOR_SIZE (1<<ISO_SECTOR_BITS) 34 35 #define ISO_REGULAR 1 /* regular file */ 36 #define ISO_DIRECTORY 2 /* directory */ 37 #define ISO_OTHER 0 /* other file (with Rock Ridge) */ 38 39 #define RR_FLAG_PX 0x01 /* have POSIX file attributes */ 40 #define RR_FLAG_PN 0x02 /* POSIX devices */ 41 #define RR_FLAG_SL 0x04 /* Symbolic link */ 42 #define RR_FLAG_NM 0x08 /* have alternate file name */ 43 #define RR_FLAG_CL 0x10 /* Child link */ 44 #define RR_FLAG_PL 0x20 /* Parent link */ 45 #define RR_FLAG_RE 0x40 /* Relocation directory */ 46 #define RR_FLAG_TF 0x80 /* Timestamps */ 47 48 /* POSIX file attributes for Rock Ridge extensions */ 49 #define POSIX_S_IFMT 0xF000 50 #define POSIX_S_IFREG 0x8000 51 #define POSIX_S_IFDIR 0x4000 52 53 /* volume descriptor types */ 54 #define ISO_VD_PRIMARY 1 55 #define ISO_VD_END 255 56 57 #define ISO_STANDARD_ID "CD001" 58 59 #ifndef ASM_FILE 60 61 #ifndef __BIT_TYPES_DEFINED__ 62 typedef int int8_t __attribute__((mode(QI))); 63 typedef unsigned int u_int8_t __attribute__((mode(QI))); 64 typedef int int16_t __attribute__((mode(HI))); 65 typedef unsigned int u_int16_t __attribute__((mode(HI))); 66 typedef int int32_t __attribute__((mode(SI))); 67 typedef unsigned int u_int32_t __attribute__((mode(SI))); 68 #endif 69 70 typedef union { 71 u_int8_t l,b; 72 } iso_8bit_t; 73 74 typedef struct __iso_16bit { 75 u_int16_t l, b; 76 } iso_16bit_t __attribute__ ((packed)); 77 78 typedef struct __iso_32bit { 79 u_int32_t l, b; 80 } iso_32bit_t __attribute__ ((packed)); 81 82 typedef u_int8_t iso_date_t[7]; 83 84 struct iso_directory_record { 85 iso_8bit_t length; 86 iso_8bit_t ext_attr_length; 87 iso_32bit_t extent; 88 iso_32bit_t size; 89 iso_date_t date; 90 iso_8bit_t flags; 91 iso_8bit_t file_unit_size; 92 iso_8bit_t interleave; 93 iso_16bit_t volume_seq_number; 94 iso_8bit_t name_len; 95 u_int8_t name[1]; 96 } __attribute__ ((packed)); 97 98 struct iso_primary_descriptor { 99 iso_8bit_t type; 100 u_int8_t id[5]; 101 iso_8bit_t version; 102 u_int8_t _unused1[1]; 103 u_int8_t system_id[32]; 104 u_int8_t volume_id[32]; 105 u_int8_t _unused2[8]; 106 iso_32bit_t volume_space_size; 107 u_int8_t _unused3[32]; 108 iso_16bit_t volume_set_size; 109 iso_16bit_t volume_seq_number; 110 iso_16bit_t logical_block_size; 111 iso_32bit_t path_table_size; 112 u_int8_t type_l_path_table[4]; 113 u_int8_t opt_type_l_path_table[4]; 114 u_int8_t type_m_path_table[4]; 115 u_int8_t opt_type_m_path_table[4]; 116 struct iso_directory_record root_directory_record; 117 u_int8_t volume_set_id[128]; 118 u_int8_t publisher_id[128]; 119 u_int8_t preparer_id[128]; 120 u_int8_t application_id[128]; 121 u_int8_t copyright_file_id[37]; 122 u_int8_t abstract_file_id[37]; 123 u_int8_t bibliographic_file_id[37]; 124 u_int8_t creation_date[17]; 125 u_int8_t modification_date[17]; 126 u_int8_t expiration_date[17]; 127 u_int8_t effective_date[17]; 128 iso_8bit_t file_structure_version; 129 u_int8_t _unused4[1]; 130 u_int8_t application_data[512]; 131 u_int8_t _unused5[653]; 132 } __attribute__ ((packed)); 133 134 struct rock_ridge { 135 u_int16_t signature; 136 u_int8_t len; 137 u_int8_t version; 138 union { 139 struct SP { 140 u_int16_t magic; 141 u_int8_t skip; 142 } sp; 143 struct CE { 144 iso_32bit_t extent; 145 iso_32bit_t offset; 146 iso_32bit_t size; 147 } ce; 148 struct ER { 149 u_int8_t len_id; 150 u_int8_t len_des; 151 u_int8_t len_src; 152 u_int8_t ext_ver; 153 u_int8_t data[0]; 154 } er; 155 struct RR { 156 iso_8bit_t flags; 157 } rr; 158 struct PX { 159 iso_32bit_t mode; 160 iso_32bit_t nlink; 161 iso_32bit_t uid; 162 iso_32bit_t gid; 163 } px; 164 struct PN { 165 iso_32bit_t dev_high; 166 iso_32bit_t dev_low; 167 } pn; 168 struct SL { 169 iso_8bit_t flags; 170 struct SL_component { 171 iso_8bit_t flags; 172 u_int8_t len; 173 u_int8_t text[0]; 174 } link; 175 } sl; 176 struct NM { 177 iso_8bit_t flags; 178 u_int8_t name[0]; 179 } nm; 180 struct CL { 181 iso_32bit_t location; 182 } cl; 183 struct PL { 184 iso_32bit_t location; 185 } pl; 186 struct TF { 187 iso_8bit_t flags; 188 iso_date_t times[0]; 189 } tf; 190 } u; 191 } __attribute__ ((packed)); 192 193 typedef union RR_ptr { 194 struct rock_ridge *rr; 195 char *ptr; 196 int i; 197 } RR_ptr_t; 198 199 #define RRMAGIC(c1, c2) ((c1)|(c2) << 8) 200 201 #define CHECK2(ptr, c1, c2) \ 202 (*(unsigned short *)(ptr) == (((c1) | (c2) << 8) & 0xFFFF)) 203 204 #endif /* !ASM_FILE */ 205 206 #endif /* _ISO9660_H_ */ 207