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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | |
| 2 | #ifndef _ISOFS_FS_H |
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| 3 | #define _ISOFS_FS_H |
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| 4 | |||
| 5 | #include <linux/types.h> |
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| 6 | /* |
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| 7 | * The isofs filesystem constants/structures |
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| 8 | */ |
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| 9 | |||
| 10 | /* This part borrowed from the bsd386 isofs */ |
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| 11 | #define ISODCL(from, to) (to - from + 1) |
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| 12 | |||
| 13 | struct iso_volume_descriptor { |
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| 14 | char type[ISODCL(1,1)]; /* 711 */ |
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| 15 | char id[ISODCL(2,6)]; |
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| 16 | char version[ISODCL(7,7)]; |
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| 17 | char data[ISODCL(8,2048)]; |
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| 18 | }; |
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| 19 | |||
| 20 | /* volume descriptor types */ |
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| 21 | #define ISO_VD_PRIMARY 1 |
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| 22 | #define ISO_VD_SUPPLEMENTARY 2 |
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| 23 | #define ISO_VD_END 255 |
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| 24 | |||
| 25 | #define ISO_STANDARD_ID "CD001" |
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| 26 | |||
| 27 | struct iso_primary_descriptor { |
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| 28 | char type [ISODCL ( 1, 1)]; /* 711 */ |
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| 29 | char id [ISODCL ( 2, 6)]; |
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| 30 | char version [ISODCL ( 7, 7)]; /* 711 */ |
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| 31 | char unused1 [ISODCL ( 8, 8)]; |
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| 32 | char system_id [ISODCL ( 9, 40)]; /* achars */ |
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| 33 | char volume_id [ISODCL ( 41, 72)]; /* dchars */ |
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| 34 | char unused2 [ISODCL ( 73, 80)]; |
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| 35 | char volume_space_size [ISODCL ( 81, 88)]; /* 733 */ |
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| 36 | char unused3 [ISODCL ( 89, 120)]; |
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| 37 | char volume_set_size [ISODCL (121, 124)]; /* 723 */ |
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| 38 | char volume_sequence_number [ISODCL (125, 128)]; /* 723 */ |
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| 39 | char logical_block_size [ISODCL (129, 132)]; /* 723 */ |
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| 40 | char path_table_size [ISODCL (133, 140)]; /* 733 */ |
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| 41 | char type_l_path_table [ISODCL (141, 144)]; /* 731 */ |
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| 42 | char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ |
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| 43 | char type_m_path_table [ISODCL (149, 152)]; /* 732 */ |
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| 44 | char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ |
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| 45 | char root_directory_record [ISODCL (157, 190)]; /* 9.1 */ |
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| 46 | char volume_set_id [ISODCL (191, 318)]; /* dchars */ |
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| 47 | char publisher_id [ISODCL (319, 446)]; /* achars */ |
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| 48 | char preparer_id [ISODCL (447, 574)]; /* achars */ |
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| 49 | char application_id [ISODCL (575, 702)]; /* achars */ |
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| 50 | char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ |
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| 51 | char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ |
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| 52 | char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ |
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| 53 | char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ |
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| 54 | char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ |
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| 55 | char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ |
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| 56 | char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ |
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| 57 | char file_structure_version [ISODCL (882, 882)]; /* 711 */ |
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| 58 | char unused4 [ISODCL (883, 883)]; |
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| 59 | char application_data [ISODCL (884, 1395)]; |
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| 60 | char unused5 [ISODCL (1396, 2048)]; |
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| 61 | }; |
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| 62 | |||
| 63 | /* Almost the same as the primary descriptor but two fields are specified */ |
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| 64 | struct iso_supplementary_descriptor { |
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| 65 | char type [ISODCL ( 1, 1)]; /* 711 */ |
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| 66 | char id [ISODCL ( 2, 6)]; |
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| 67 | char version [ISODCL ( 7, 7)]; /* 711 */ |
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| 68 | char flags [ISODCL ( 8, 8)]; /* 853 */ |
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| 69 | char system_id [ISODCL ( 9, 40)]; /* achars */ |
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| 70 | char volume_id [ISODCL ( 41, 72)]; /* dchars */ |
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| 71 | char unused2 [ISODCL ( 73, 80)]; |
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| 72 | char volume_space_size [ISODCL ( 81, 88)]; /* 733 */ |
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| 73 | char escape [ISODCL ( 89, 120)]; /* 856 */ |
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| 74 | char volume_set_size [ISODCL (121, 124)]; /* 723 */ |
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| 75 | char volume_sequence_number [ISODCL (125, 128)]; /* 723 */ |
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| 76 | char logical_block_size [ISODCL (129, 132)]; /* 723 */ |
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| 77 | char path_table_size [ISODCL (133, 140)]; /* 733 */ |
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| 78 | char type_l_path_table [ISODCL (141, 144)]; /* 731 */ |
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| 79 | char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ |
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| 80 | char type_m_path_table [ISODCL (149, 152)]; /* 732 */ |
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| 81 | char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ |
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| 82 | char root_directory_record [ISODCL (157, 190)]; /* 9.1 */ |
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| 83 | char volume_set_id [ISODCL (191, 318)]; /* dchars */ |
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| 84 | char publisher_id [ISODCL (319, 446)]; /* achars */ |
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| 85 | char preparer_id [ISODCL (447, 574)]; /* achars */ |
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| 86 | char application_id [ISODCL (575, 702)]; /* achars */ |
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| 87 | char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ |
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| 88 | char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ |
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| 89 | char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ |
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| 90 | char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ |
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| 91 | char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ |
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| 92 | char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ |
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| 93 | char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ |
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| 94 | char file_structure_version [ISODCL (882, 882)]; /* 711 */ |
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| 95 | char unused4 [ISODCL (883, 883)]; |
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| 96 | char application_data [ISODCL (884, 1395)]; |
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| 97 | char unused5 [ISODCL (1396, 2048)]; |
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| 98 | }; |
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| 99 | |||
| 100 | |||
| 101 | #define HS_STANDARD_ID "CDROM" |
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| 102 | |||
| 103 | struct hs_volume_descriptor { |
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| 104 | char foo [ISODCL ( 1, 8)]; /* 733 */ |
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| 105 | char type [ISODCL ( 9, 9)]; /* 711 */ |
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| 106 | char id [ISODCL ( 10, 14)]; |
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| 107 | char version [ISODCL ( 15, 15)]; /* 711 */ |
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| 108 | char data[ISODCL(16,2048)]; |
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| 109 | }; |
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| 110 | |||
| 111 | |||
| 112 | struct hs_primary_descriptor { |
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| 113 | char foo [ISODCL ( 1, 8)]; /* 733 */ |
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| 114 | char type [ISODCL ( 9, 9)]; /* 711 */ |
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| 115 | char id [ISODCL ( 10, 14)]; |
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| 116 | char version [ISODCL ( 15, 15)]; /* 711 */ |
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| 117 | char unused1 [ISODCL ( 16, 16)]; /* 711 */ |
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| 118 | char system_id [ISODCL ( 17, 48)]; /* achars */ |
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| 119 | char volume_id [ISODCL ( 49, 80)]; /* dchars */ |
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| 120 | char unused2 [ISODCL ( 81, 88)]; /* 733 */ |
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| 121 | char volume_space_size [ISODCL ( 89, 96)]; /* 733 */ |
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| 122 | char unused3 [ISODCL ( 97, 128)]; /* 733 */ |
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| 123 | char volume_set_size [ISODCL (129, 132)]; /* 723 */ |
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| 124 | char volume_sequence_number [ISODCL (133, 136)]; /* 723 */ |
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| 125 | char logical_block_size [ISODCL (137, 140)]; /* 723 */ |
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| 126 | char path_table_size [ISODCL (141, 148)]; /* 733 */ |
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| 127 | char type_l_path_table [ISODCL (149, 152)]; /* 731 */ |
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| 128 | char unused4 [ISODCL (153, 180)]; /* 733 */ |
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| 129 | char root_directory_record [ISODCL (181, 214)]; /* 9.1 */ |
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| 130 | }; |
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| 131 | |||
| 132 | /* We use this to help us look up the parent inode numbers. */ |
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| 133 | |||
| 134 | struct iso_path_table{ |
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| 135 | unsigned char name_len[2]; /* 721 */ |
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| 136 | char extent[4]; /* 731 */ |
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| 137 | char parent[2]; /* 721 */ |
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| 138 | char name[0]; |
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| 139 | } __attribute__((packed)); |
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| 140 | |||
| 141 | /* high sierra is identical to iso, except that the date is only 6 bytes, and |
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| 142 | there is an extra reserved byte after the flags */ |
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| 143 | |||
| 144 | struct iso_directory_record { |
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| 145 | char length [ISODCL (1, 1)]; /* 711 */ |
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| 146 | char ext_attr_length [ISODCL (2, 2)]; /* 711 */ |
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| 147 | char extent [ISODCL (3, 10)]; /* 733 */ |
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| 148 | char size [ISODCL (11, 18)]; /* 733 */ |
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| 149 | char date [ISODCL (19, 25)]; /* 7 by 711 */ |
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| 150 | char flags [ISODCL (26, 26)]; |
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| 151 | char file_unit_size [ISODCL (27, 27)]; /* 711 */ |
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| 152 | char interleave [ISODCL (28, 28)]; /* 711 */ |
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| 153 | char volume_sequence_number [ISODCL (29, 32)]; /* 723 */ |
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| 154 | unsigned char name_len [ISODCL (33, 33)]; /* 711 */ |
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| 155 | char name [0]; |
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| 156 | } __attribute__((packed)); |
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| 157 | |||
| 158 | #define ISOFS_BLOCK_BITS 11 |
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| 159 | #define ISOFS_BLOCK_SIZE 2048 |
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| 160 | |||
| 161 | #define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize) |
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| 162 | #define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits) |
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| 163 | |||
| 164 | #define ISOFS_SUPER_MAGIC 0x9660 |
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| 165 | |||
| 166 | #ifdef __KERNEL__ |
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| 167 | /* Number conversion inlines, named after the section in ISO 9660 |
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| 168 | they correspond to. */ |
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| 169 | |||
| 170 | #include <asm/byteorder.h> |
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| 171 | #include <asm/unaligned.h> |
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| 172 | #include <linux/iso_fs_i.h> |
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| 173 | #include <linux/iso_fs_sb.h> |
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| 174 | |||
| 175 | static inline struct isofs_sb_info *ISOFS_SB(struct super_block *sb) |
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| 176 | { |
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| 177 | return sb->s_fs_info; |
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| 178 | } |
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| 179 | |||
| 180 | static inline struct iso_inode_info *ISOFS_I(struct inode *inode) |
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| 181 | { |
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| 182 | return container_of(inode, struct iso_inode_info, vfs_inode); |
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| 183 | } |
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| 184 | |||
| 185 | static inline int isonum_711(char *p) |
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| 186 | { |
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| 187 | return *(u8 *)p; |
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| 188 | } |
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| 189 | static inline int isonum_712(char *p) |
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| 190 | { |
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| 191 | return *(s8 *)p; |
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| 192 | } |
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| 193 | static inline int isonum_721(char *p) |
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| 194 | { |
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| 195 | return le16_to_cpu(get_unaligned((u16 *)p)); |
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| 196 | } |
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| 197 | static inline int isonum_722(char *p) |
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| 198 | { |
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| 199 | return be16_to_cpu(get_unaligned((u16 *)p)); |
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| 200 | } |
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| 201 | static inline int isonum_723(char *p) |
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| 202 | { |
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| 203 | /* Ignore bigendian datum due to broken mastering programs */ |
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| 204 | return le16_to_cpu(get_unaligned((u16 *)p)); |
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| 205 | } |
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| 206 | static inline int isonum_731(char *p) |
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| 207 | { |
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| 208 | return le32_to_cpu(get_unaligned((u32 *)p)); |
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| 209 | } |
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| 210 | static inline int isonum_732(char *p) |
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| 211 | { |
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| 212 | return be32_to_cpu(get_unaligned((u32 *)p)); |
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| 213 | } |
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| 214 | static inline int isonum_733(char *p) |
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| 215 | { |
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| 216 | /* Ignore bigendian datum due to broken mastering programs */ |
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| 217 | return le32_to_cpu(get_unaligned((u32 *)p)); |
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| 218 | } |
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| 219 | extern int iso_date(char *, int); |
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| 220 | |||
| 221 | struct inode; /* To make gcc happy */ |
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| 222 | |||
| 223 | extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *); |
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| 224 | extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *); |
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| 225 | extern int isofs_name_translate(struct iso_directory_record *, char *, struct inode *); |
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| 226 | |||
| 227 | int get_joliet_filename(struct iso_directory_record *, unsigned char *, struct inode *); |
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| 228 | int get_acorn_filename(struct iso_directory_record *, char *, struct inode *); |
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| 229 | |||
| 230 | extern struct dentry *isofs_lookup(struct inode *, struct dentry *, struct nameidata *); |
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| 231 | extern struct buffer_head *isofs_bread(struct inode *, sector_t); |
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| 232 | extern int isofs_get_blocks(struct inode *, sector_t, struct buffer_head **, unsigned long); |
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| 233 | |||
| 234 | extern struct inode_operations isofs_dir_inode_operations; |
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| 235 | extern struct file_operations isofs_dir_operations; |
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| 236 | extern struct address_space_operations isofs_symlink_aops; |
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| 237 | |||
| 238 | /* The following macros are used to check for memory leaks. */ |
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| 239 | #ifdef LEAK_CHECK |
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| 240 | #define free_s leak_check_free_s |
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| 241 | #define malloc leak_check_malloc |
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| 242 | #define sb_bread leak_check_bread |
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| 243 | #define brelse leak_check_brelse |
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| 244 | extern void * leak_check_malloc(unsigned int size); |
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| 245 | extern void leak_check_free_s(void * obj, int size); |
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| 246 | extern struct buffer_head * leak_check_bread(struct super_block *sb, int block); |
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| 247 | extern void leak_check_brelse(struct buffer_head * bh); |
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| 248 | #endif /* LEAK_CHECK */ |
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| 249 | |||
| 250 | #endif /* __KERNEL__ */ |
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| 251 | |||
| 252 | #endif |