sys/fs/cd9660/iso.h

   1 /*      $NetBSD: iso.h,v 1.10 2011/09/27 01:01:44 christos Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley
   8  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
   9  * Support code is derived from software contributed to Berkeley
  10  * by Atsushi Murai (amurai@spec.co.jp).
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)iso.h       8.6 (Berkeley) 5/10/95
  37  */
  38
  39 /*
  40  * Definitions describing ISO9660 file system structure, as well as
  41  * the functions necessary to access fields of ISO9660 file system
  42  * structures.
  43  */
  44
  45 #ifndef _ISOFS_CD9660_ISO_H_
  46 #define _ISOFS_CD9660_ISO_H_
  47
  48 #define ISODCL(from, to) (to - from + 1)
  49
  50 struct iso_volume_descriptor {
  51         char type[ISODCL(1,1)]; /* 711 */
  52         char id[ISODCL(2,6)];
  53         char version[ISODCL(7,7)];
  54         char data[ISODCL(8,2048)];
  55 };
  56
  57 /* volume descriptor types */
  58 #define ISO_VD_PRIMARY 1
  59 #define ISO_VD_SUPPLEMENTARY 2
  60 #define ISO_VD_END 255
  61
  62 #define ISO_STANDARD_ID "CD001"
  63 #define ISO_ECMA_ID     "CDW01"
  64
  65 #define ISO_MAXNAMLEN   255
  66
  67 struct iso_primary_descriptor {
  68         char type                       [ISODCL (  1,   1)]; /* 711 */
  69         char id                         [ISODCL (  2,   6)];
  70         char version                    [ISODCL (  7,   7)]; /* 711 */
  71         char unused1                    [ISODCL (  8,   8)];
  72         char system_id                  [ISODCL (  9,  40)]; /* achars */
  73         char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
  74         char unused2                    [ISODCL ( 73,  80)];
  75         char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
  76         char unused3                    [ISODCL ( 89, 120)];
  77         char volume_set_size            [ISODCL (121, 124)]; /* 723 */
  78         char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
  79         char logical_block_size         [ISODCL (129, 132)]; /* 723 */
  80         char path_table_size            [ISODCL (133, 140)]; /* 733 */
  81         char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
  82         char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
  83         char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
  84         char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
  85         char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
  86         char volume_set_id              [ISODCL (191, 318)]; /* dchars */
  87         char publisher_id               [ISODCL (319, 446)]; /* achars */
  88         char preparer_id                [ISODCL (447, 574)]; /* achars */
  89         char application_id             [ISODCL (575, 702)]; /* achars */
  90         char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
  91         char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
  92         char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
  93         char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
  94         char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
  95         char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
  96         char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
  97         char file_structure_version     [ISODCL (882, 882)]; /* 711 */
  98         char unused4                    [ISODCL (883, 883)];
  99         char application_data           [ISODCL (884, 1395)];
 100         char unused5                    [ISODCL (1396, 2048)];
 101 };
 102 #define ISO_DEFAULT_BLOCK_SIZE          2048
 103
 104 struct iso_supplementary_descriptor {
 105         char type                       [ISODCL (  1,   1)]; /* 711 */
 106         char id                         [ISODCL (  2,   6)];
 107         char version                    [ISODCL (  7,   7)]; /* 711 */
 108         char flags                      [ISODCL (  8,   8)]; /* 711? */
 109         char system_id                  [ISODCL (  9,  40)]; /* achars */
 110         char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
 111         char unused2                    [ISODCL ( 73,  80)];
 112         char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
 113         char escape                     [ISODCL ( 89, 120)];
 114         char volume_set_size            [ISODCL (121, 124)]; /* 723 */
 115         char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
 116         char logical_block_size         [ISODCL (129, 132)]; /* 723 */
 117         char path_table_size            [ISODCL (133, 140)]; /* 733 */
 118         char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
 119         char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
 120         char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
 121         char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
 122         char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
 123         char volume_set_id              [ISODCL (191, 318)]; /* dchars */
 124         char publisher_id               [ISODCL (319, 446)]; /* achars */
 125         char preparer_id                [ISODCL (447, 574)]; /* achars */
 126         char application_id             [ISODCL (575, 702)]; /* achars */
 127         char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
 128         char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
 129         char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
 130         char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
 131         char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
 132         char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
 133         char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
 134         char file_structure_version     [ISODCL (882, 882)]; /* 711 */
 135         char unused4                    [ISODCL (883, 883)];
 136         char application_data           [ISODCL (884, 1395)];
 137         char unused5                    [ISODCL (1396, 2048)];
 138 };
 139
 140 struct iso_directory_record {
 141         char length                     [ISODCL (1, 1)]; /* 711 */
 142         char ext_attr_length            [ISODCL (2, 2)]; /* 711 */
 143         u_char extent                   [ISODCL (3, 10)]; /* 733 */
 144         u_char size                     [ISODCL (11, 18)]; /* 733 */
 145         char date                       [ISODCL (19, 25)]; /* 7 by 711 */
 146         char flags                      [ISODCL (26, 26)];
 147         char file_unit_size             [ISODCL (27, 27)]; /* 711 */
 148         char interleave                 [ISODCL (28, 28)]; /* 711 */
 149         char volume_sequence_number     [ISODCL (29, 32)]; /* 723 */
 150         char name_len                   [ISODCL (33, 33)]; /* 711 */
 151         char name                       [1];                    /* XXX */
 152 };
 153 /* can't take sizeof(iso_directory_record), because of possible alignment
 154    of the last entry (34 instead of 33) */
 155 #define ISO_DIRECTORY_RECORD_SIZE       33
 156
 157 struct iso_extended_attributes {
 158         u_char owner                    [ISODCL (1, 4)]; /* 723 */
 159         u_char group                    [ISODCL (5, 8)]; /* 723 */
 160         u_char perm                     [ISODCL (9, 10)]; /* 9.5.3 */
 161         char ctime                      [ISODCL (11, 27)]; /* 8.4.26.1 */
 162         char mtime                      [ISODCL (28, 44)]; /* 8.4.26.1 */
 163         char xtime                      [ISODCL (45, 61)]; /* 8.4.26.1 */
 164         char ftime                      [ISODCL (62, 78)]; /* 8.4.26.1 */
 165         char recfmt                     [ISODCL (79, 79)]; /* 711 */
 166         char recattr                    [ISODCL (80, 80)]; /* 711 */
 167         u_char reclen                   [ISODCL (81, 84)]; /* 723 */
 168         char system_id                  [ISODCL (85, 116)]; /* achars */
 169         char system_use                 [ISODCL (117, 180)];
 170         char version                    [ISODCL (181, 181)]; /* 711 */
 171         char len_esc                    [ISODCL (182, 182)]; /* 711 */
 172         char reserved                   [ISODCL (183, 246)];
 173         u_char len_au                   [ISODCL (247, 250)]; /* 723 */
 174 };
 175
 176 /* 7.1.1: unsigned char */
 177 static __inline __unused int
 178 isonum_711(const u_char *p)
 179 {
 180         return *p;
 181 }
 182
 183 /* 7.1.2: signed char */
 184 static __inline __unused int
 185 isonum_712(const u_char *p)
 186 {
 187         return (signed char) *p;
 188 }
 189
 190 /* 7.2.1: unsigned little-endian 16-bit value.  NOT USED IN KERNEL. */
 191 static __inline __unused uint16_t
 192 isonum_721(const u_char *p)
 193 {
 194         return le16dec(p);
 195 }
 196
 197 /* 7.2.2: unsigned big-endian 16-bit value.  NOT USED IN KERNEL. */
 198 static __inline __unused uint16_t
 199 isonum_722(const u_char *p)
 200 {
 201         return be16dec(p);
 202 }
 203
 204 /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
 205 static __inline __unused uint16_t
 206 isonum_723(const u_char *p)
 207 {
 208 #if BYTE_ORDER == BIG_ENDIAN
 209         return be16dec(p + 2);
 210 #else
 211         return le16dec(p);
 212 #endif
 213 }
 214
 215 /* 7.3.1: unsigned little-endian 32-bit value.  NOT USED IN KERNEL. */
 216 static __inline __unused uint32_t
 217 isonum_731(const u_char *p)
 218 {
 219         return le32dec(p);
 220 }
 221
 222 /* 7.3.2: unsigned big-endian 32-bit value.  NOT USED IN KERNEL. */
 223 static __inline __unused uint32_t
 224 isonum_732(const u_char *p)
 225 {
 226         return be32dec(p);
 227 }
 228
 229 /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
 230 static __inline __unused uint32_t
 231 isonum_733(const u_char *p)
 232 {
 233 #if BYTE_ORDER == BIG_ENDIAN
 234         return be32dec(p + 4);
 235 #else
 236         return le32dec(p);
 237 #endif
 238 }
 239
 240 /*
 241  * Associated files have a leading '='.
 242  */
 243 #define ASSOCCHAR       '='
 244
 245 #endif /* _ISOFS_CD9660_ISO_H_ */