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1da177e4 LT |
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 | ||
1da177e4 | 165 | #endif |