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 14 struct 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 28 struct 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 */ 65 struct 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" 103 104 struct 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 }; 111 112 113 struct 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. */ 134 135 struct 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 */ 144 145 struct 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