LXR linux/include/uapi/linux/iso

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _ISOFS_FS_H
   3#define _ISOFS_FS_H
   4
   5#include <linux/types.h>
   6#include <linux/magic.h>
   7
   8/*
   9 * The isofs filesystem constants/structures
  10 */
  11
  12/* This part borrowed from the bsd386 isofs */
  13#define ISODCL(from, to) (to - from + 1)
  14
  15struct iso_volume_descriptor {
  16        __u8 type[ISODCL(1,1)]; /* 711 */
  17        char id[ISODCL(2,6)];
  18        __u8 version[ISODCL(7,7)];
  19        __u8 data[ISODCL(8,2048)];
  20};
  21
  22/* volume descriptor types */
  23#define ISO_VD_PRIMARY 1
  24#define ISO_VD_SUPPLEMENTARY 2
  25#define ISO_VD_END 255
  26
  27#define ISO_STANDARD_ID "CD001"
  28
  29struct iso_primary_descriptor {
  30        __u8 type                       [ISODCL (  1,   1)]; /* 711 */
  31        char id                         [ISODCL (  2,   6)];
  32        __u8 version                    [ISODCL (  7,   7)]; /* 711 */
  33        __u8 unused1                    [ISODCL (  8,   8)];
  34        char system_id                  [ISODCL (  9,  40)]; /* achars */
  35        char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
  36        __u8 unused2                    [ISODCL ( 73,  80)];
  37        __u8 volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
  38        __u8 unused3                    [ISODCL ( 89, 120)];
  39        __u8 volume_set_size            [ISODCL (121, 124)]; /* 723 */
  40        __u8 volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
  41        __u8 logical_block_size         [ISODCL (129, 132)]; /* 723 */
  42        __u8 path_table_size            [ISODCL (133, 140)]; /* 733 */
  43        __u8 type_l_path_table          [ISODCL (141, 144)]; /* 731 */
  44        __u8 opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
  45        __u8 type_m_path_table          [ISODCL (149, 152)]; /* 732 */
  46        __u8 opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
  47        __u8 root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
  48        char volume_set_id              [ISODCL (191, 318)]; /* dchars */
  49        char publisher_id               [ISODCL (319, 446)]; /* achars */
  50        char preparer_id                [ISODCL (447, 574)]; /* achars */
  51        char application_id             [ISODCL (575, 702)]; /* achars */
  52        char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
  53        char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
  54        char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
  55        __u8 creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
  56        __u8 modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
  57        __u8 expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
  58        __u8 effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
  59        __u8 file_structure_version     [ISODCL (882, 882)]; /* 711 */
  60        __u8 unused4                    [ISODCL (883, 883)];
  61        __u8 application_data           [ISODCL (884, 1395)];
  62        __u8 unused5                    [ISODCL (1396, 2048)];
  63};
  64
  65/* Almost the same as the primary descriptor but two fields are specified */
  66struct iso_supplementary_descriptor {
  67        __u8 type                       [ISODCL (  1,   1)]; /* 711 */
  68        char id                         [ISODCL (  2,   6)];
  69        __u8 version                    [ISODCL (  7,   7)]; /* 711 */
  70        __u8 flags                      [ISODCL (  8,   8)]; /* 853 */
  71        char system_id                  [ISODCL (  9,  40)]; /* achars */
  72        char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
  73        __u8 unused2                    [ISODCL ( 73,  80)];
  74        __u8 volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
  75        __u8 escape                     [ISODCL ( 89, 120)]; /* 856 */
  76        __u8 volume_set_size            [ISODCL (121, 124)]; /* 723 */
  77        __u8 volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
  78        __u8 logical_block_size         [ISODCL (129, 132)]; /* 723 */
  79        __u8 path_table_size            [ISODCL (133, 140)]; /* 733 */
  80        __u8 type_l_path_table          [ISODCL (141, 144)]; /* 731 */
  81        __u8 opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
  82        __u8 type_m_path_table          [ISODCL (149, 152)]; /* 732 */
  83        __u8 opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
  84        __u8 root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
  85        char volume_set_id              [ISODCL (191, 318)]; /* dchars */
  86        char publisher_id               [ISODCL (319, 446)]; /* achars */
  87        char preparer_id                [ISODCL (447, 574)]; /* achars */
  88        char application_id             [ISODCL (575, 702)]; /* achars */
  89        char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
  90        char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
  91        char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
  92        __u8 creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
  93        __u8 modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
  94        __u8 expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
  95        __u8 effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
  96        __u8 file_structure_version     [ISODCL (882, 882)]; /* 711 */
  97        __u8 unused4                    [ISODCL (883, 883)];
  98        __u8 application_data           [ISODCL (884, 1395)];
  99        __u8 unused5                    [ISODCL (1396, 2048)];
 100};
 101
 102
 103#define HS_STANDARD_ID "CDROM"
 104
 105struct  hs_volume_descriptor {
 106        __u8 foo                        [ISODCL (  1,   8)]; /* 733 */
 107        __u8 type                       [ISODCL (  9,   9)]; /* 711 */
 108        char id                         [ISODCL ( 10,  14)];
 109        __u8 version                    [ISODCL ( 15,  15)]; /* 711 */
 110        __u8 data[ISODCL(16,2048)];
 111};
 112
 113
 114struct hs_primary_descriptor {
 115        __u8 foo                        [ISODCL (  1,   8)]; /* 733 */
 116        __u8 type                       [ISODCL (  9,   9)]; /* 711 */
 117        __u8 id                         [ISODCL ( 10,  14)];
 118        __u8 version                    [ISODCL ( 15,  15)]; /* 711 */
 119        __u8 unused1                    [ISODCL ( 16,  16)]; /* 711 */
 120        char system_id                  [ISODCL ( 17,  48)]; /* achars */
 121        char volume_id                  [ISODCL ( 49,  80)]; /* dchars */
 122        __u8 unused2                    [ISODCL ( 81,  88)]; /* 733 */
 123        __u8 volume_space_size          [ISODCL ( 89,  96)]; /* 733 */
 124        __u8 unused3                    [ISODCL ( 97, 128)]; /* 733 */
 125        __u8 volume_set_size            [ISODCL (129, 132)]; /* 723 */
 126        __u8 volume_sequence_number     [ISODCL (133, 136)]; /* 723 */
 127        __u8 logical_block_size         [ISODCL (137, 140)]; /* 723 */
 128        __u8 path_table_size            [ISODCL (141, 148)]; /* 733 */
 129        __u8 type_l_path_table          [ISODCL (149, 152)]; /* 731 */
 130        __u8 unused4                    [ISODCL (153, 180)]; /* 733 */
 131        __u8 root_directory_record      [ISODCL (181, 214)]; /* 9.1 */
 132};
 133
 134/* We use this to help us look up the parent inode numbers. */
 135
 136struct iso_path_table{
 137        __u8  name_len[2];      /* 721 */
 138        __u8  extent[4];        /* 731 */
 139        __u8  parent[2];        /* 721 */
 140        char name[0];
 141} __attribute__((packed));
 142
 143/* high sierra is identical to iso, except that the date is only 6 bytes, and
 144   there is an extra reserved byte after the flags */
 145
 146struct iso_directory_record {
 147        __u8 length                     [ISODCL (1, 1)]; /* 711 */
 148        __u8 ext_attr_length            [ISODCL (2, 2)]; /* 711 */
 149        __u8 extent                     [ISODCL (3, 10)]; /* 733 */
 150        __u8 size                       [ISODCL (11, 18)]; /* 733 */
 151        __u8 date                       [ISODCL (19, 25)]; /* 7 by 711 */
 152        __u8 flags                      [ISODCL (26, 26)];
 153        __u8 file_unit_size             [ISODCL (27, 27)]; /* 711 */
 154        __u8 interleave                 [ISODCL (28, 28)]; /* 711 */
 155        __u8 volume_sequence_number     [ISODCL (29, 32)]; /* 723 */
 156        __u8 name_len                   [ISODCL (33, 33)]; /* 711 */
 157        char name                       [0];
 158} __attribute__((packed));
 159
 160#define ISOFS_BLOCK_BITS 11
 161#define ISOFS_BLOCK_SIZE 2048
 162
 163#define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize)
 164#define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits)
 165
 166#endif /* _ISOFS_FS_H */
 167