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
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