Line data Source code
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 1 :
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 1 :
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 1 :
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 1 :
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 1 :
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 */
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