LXR linux/include/linux/iso

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