include/linux/iso_fs.h

   1 #ifndef _ISOFS_FS_H
   2 #define _ISOFS_FS_H
   3
   4 #include <linux/types.h>
   5 /*
   6  * The isofs filesystem constants/structures
   7  */
   8
   9 /* This part borrowed from the bsd386 isofs */
  10 #define ISODCL(from, to) (to - from + 1)
  11
  12 struct iso_volume_descriptor {
  13         char type[ISODCL(1,1)]; /* 711 */
  14         char id[ISODCL(2,6)];
  15         char version[ISODCL(7,7)];
  16         char data[ISODCL(8,2048)];
  17 };
  18
  19 /* volume descriptor types */
  20 #define ISO_VD_PRIMARY 1
  21 #define ISO_VD_SUPPLEMENTARY 2
  22 #define ISO_VD_END 255
  23
  24 #define ISO_STANDARD_ID "CD001"
  25
  26 struct iso_primary_descriptor {
  27         char type                       [ISODCL (  1,   1)]; /* 711 */
  28         char id                         [ISODCL (  2,   6)];
  29         char version                    [ISODCL (  7,   7)]; /* 711 */
  30         char unused1                    [ISODCL (  8,   8)];
  31         char system_id                  [ISODCL (  9,  40)]; /* achars */
  32         char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
  33         char unused2                    [ISODCL ( 73,  80)];
  34         char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
  35         char unused3                    [ISODCL ( 89, 120)];
  36         char volume_set_size            [ISODCL (121, 124)]; /* 723 */
  37         char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
  38         char logical_block_size         [ISODCL (129, 132)]; /* 723 */
  39         char path_table_size            [ISODCL (133, 140)]; /* 733 */
  40         char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
  41         char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
  42         char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
  43         char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
  44         char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
  45         char volume_set_id              [ISODCL (191, 318)]; /* dchars */
  46         char publisher_id               [ISODCL (319, 446)]; /* achars */
  47         char preparer_id                [ISODCL (447, 574)]; /* achars */
  48         char application_id             [ISODCL (575, 702)]; /* achars */
  49         char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
  50         char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
  51         char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
  52         char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
  53         char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
  54         char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
  55         char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
  56         char file_structure_version     [ISODCL (882, 882)]; /* 711 */
  57         char unused4                    [ISODCL (883, 883)];
  58         char application_data           [ISODCL (884, 1395)];
  59         char unused5                    [ISODCL (1396, 2048)];
  60 };
  61
  62 /* Almost the same as the primary descriptor but two fields are specified */
  63 struct iso_supplementary_descriptor {
  64         char type                       [ISODCL (  1,   1)]; /* 711 */
  65         char id                         [ISODCL (  2,   6)];
  66         char version                    [ISODCL (  7,   7)]; /* 711 */
  67         char flags                      [ISODCL (  8,   8)]; /* 853 */
  68         char system_id                  [ISODCL (  9,  40)]; /* achars */
  69         char volume_id                  [ISODCL ( 41,  72)]; /* dchars */
  70         char unused2                    [ISODCL ( 73,  80)];
  71         char volume_space_size          [ISODCL ( 81,  88)]; /* 733 */
  72         char escape                     [ISODCL ( 89, 120)]; /* 856 */
  73         char volume_set_size            [ISODCL (121, 124)]; /* 723 */
  74         char volume_sequence_number     [ISODCL (125, 128)]; /* 723 */
  75         char logical_block_size         [ISODCL (129, 132)]; /* 723 */
  76         char path_table_size            [ISODCL (133, 140)]; /* 733 */
  77         char type_l_path_table          [ISODCL (141, 144)]; /* 731 */
  78         char opt_type_l_path_table      [ISODCL (145, 148)]; /* 731 */
  79         char type_m_path_table          [ISODCL (149, 152)]; /* 732 */
  80         char opt_type_m_path_table      [ISODCL (153, 156)]; /* 732 */
  81         char root_directory_record      [ISODCL (157, 190)]; /* 9.1 */
  82         char volume_set_id              [ISODCL (191, 318)]; /* dchars */
  83         char publisher_id               [ISODCL (319, 446)]; /* achars */
  84         char preparer_id                [ISODCL (447, 574)]; /* achars */
  85         char application_id             [ISODCL (575, 702)]; /* achars */
  86         char copyright_file_id          [ISODCL (703, 739)]; /* 7.5 dchars */
  87         char abstract_file_id           [ISODCL (740, 776)]; /* 7.5 dchars */
  88         char bibliographic_file_id      [ISODCL (777, 813)]; /* 7.5 dchars */
  89         char creation_date              [ISODCL (814, 830)]; /* 8.4.26.1 */
  90         char modification_date          [ISODCL (831, 847)]; /* 8.4.26.1 */
  91         char expiration_date            [ISODCL (848, 864)]; /* 8.4.26.1 */
  92         char effective_date             [ISODCL (865, 881)]; /* 8.4.26.1 */
  93         char file_structure_version     [ISODCL (882, 882)]; /* 711 */
  94         char unused4                    [ISODCL (883, 883)];
  95         char application_data           [ISODCL (884, 1395)];
  96         char unused5                    [ISODCL (1396, 2048)];
  97 };
  98
  99
 100 #define HS_STANDARD_ID "CDROM"
 101
 102 struct  hs_volume_descriptor {
 103         char foo                        [ISODCL (  1,   8)]; /* 733 */
 104         char type                       [ISODCL (  9,   9)]; /* 711 */
 105         char id                         [ISODCL ( 10,  14)];
 106         char version                    [ISODCL ( 15,  15)]; /* 711 */
 107         char data[ISODCL(16,2048)];
 108 };
 109
 110
 111 struct hs_primary_descriptor {
 112         char foo                        [ISODCL (  1,   8)]; /* 733 */
 113         char type                       [ISODCL (  9,   9)]; /* 711 */
 114         char id                         [ISODCL ( 10,  14)];
 115         char version                    [ISODCL ( 15,  15)]; /* 711 */
 116         char unused1                    [ISODCL ( 16,  16)]; /* 711 */
 117         char system_id                  [ISODCL ( 17,  48)]; /* achars */
 118         char volume_id                  [ISODCL ( 49,  80)]; /* dchars */
 119         char unused2                    [ISODCL ( 81,  88)]; /* 733 */
 120         char volume_space_size          [ISODCL ( 89,  96)]; /* 733 */
 121         char unused3                    [ISODCL ( 97, 128)]; /* 733 */
 122         char volume_set_size            [ISODCL (129, 132)]; /* 723 */
 123         char volume_sequence_number     [ISODCL (133, 136)]; /* 723 */
 124         char logical_block_size         [ISODCL (137, 140)]; /* 723 */
 125         char path_table_size            [ISODCL (141, 148)]; /* 733 */
 126         char type_l_path_table          [ISODCL (149, 152)]; /* 731 */
 127         char unused4                    [ISODCL (153, 180)]; /* 733 */
 128         char root_directory_record      [ISODCL (181, 214)]; /* 9.1 */
 129 };
 130
 131 /* We use this to help us look up the parent inode numbers. */
 132
 133 struct iso_path_table{
 134         unsigned char  name_len[2];     /* 721 */
 135         char extent[4];         /* 731 */
 136         char  parent[2];        /* 721 */
 137         char name[0];
 138 } __attribute__((packed));
 139
 140 /* high sierra is identical to iso, except that the date is only 6 bytes, and
 141    there is an extra reserved byte after the flags */
 142
 143 struct iso_directory_record {
 144         char length                     [ISODCL (1, 1)]; /* 711 */
 145         char ext_attr_length            [ISODCL (2, 2)]; /* 711 */
 146         char extent                     [ISODCL (3, 10)]; /* 733 */
 147         char size                       [ISODCL (11, 18)]; /* 733 */
 148         char date                       [ISODCL (19, 25)]; /* 7 by 711 */
 149         char flags                      [ISODCL (26, 26)];
 150         char file_unit_size             [ISODCL (27, 27)]; /* 711 */
 151         char interleave                 [ISODCL (28, 28)]; /* 711 */
 152         char volume_sequence_number     [ISODCL (29, 32)]; /* 723 */
 153         unsigned char name_len          [ISODCL (33, 33)]; /* 711 */
 154         char name                       [0];
 155 } __attribute__((packed));
 156
 157 #define ISOFS_BLOCK_BITS 11
 158 #define ISOFS_BLOCK_SIZE 2048
 159
 160 #define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize)
 161 #define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits)
 162
 163 #define ISOFS_SUPER_MAGIC 0x9660
 164
 165 #endif