1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _ISOFS_FS_H |
3 | #define _ISOFS_FS_H |
4 | |
5 | #include <linux/types.h> |
6 | #include <linux/magic.h> |
7 | |
8 | /* |
9 | * The isofs filesystem constants/structures |
10 | */ |
11 | |
12 | /* This part borrowed from the bsd386 isofs */ |
13 | #define ISODCL(from, to) (to - from + 1) |
14 | |
15 | struct iso_volume_descriptor { |
16 | __u8 type[ISODCL(1,1)]; /* 711 */ |
17 | char id[ISODCL(2,6)]; |
18 | __u8 version[ISODCL(7,7)]; |
19 | __u8 data[ISODCL(8,2048)]; |
20 | }; |
21 | |
22 | /* volume descriptor types */ |
23 | #define ISO_VD_PRIMARY 1 |
24 | #define ISO_VD_SUPPLEMENTARY 2 |
25 | #define ISO_VD_END 255 |
26 | |
27 | #define ISO_STANDARD_ID "CD001" |
28 | |
29 | struct iso_primary_descriptor { |
30 | __u8 type [ISODCL ( 1, 1)]; /* 711 */ |
31 | char id [ISODCL ( 2, 6)]; |
32 | __u8 version [ISODCL ( 7, 7)]; /* 711 */ |
33 | __u8 unused1 [ISODCL ( 8, 8)]; |
34 | char system_id [ISODCL ( 9, 40)]; /* achars */ |
35 | char volume_id [ISODCL ( 41, 72)]; /* dchars */ |
36 | __u8 unused2 [ISODCL ( 73, 80)]; |
37 | __u8 volume_space_size [ISODCL ( 81, 88)]; /* 733 */ |
38 | __u8 unused3 [ISODCL ( 89, 120)]; |
39 | __u8 volume_set_size [ISODCL (121, 124)]; /* 723 */ |
40 | __u8 volume_sequence_number [ISODCL (125, 128)]; /* 723 */ |
41 | __u8 logical_block_size [ISODCL (129, 132)]; /* 723 */ |
42 | __u8 path_table_size [ISODCL (133, 140)]; /* 733 */ |
43 | __u8 type_l_path_table [ISODCL (141, 144)]; /* 731 */ |
44 | __u8 opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ |
45 | __u8 type_m_path_table [ISODCL (149, 152)]; /* 732 */ |
46 | __u8 opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ |
47 | __u8 root_directory_record [ISODCL (157, 190)]; /* 9.1 */ |
48 | char volume_set_id [ISODCL (191, 318)]; /* dchars */ |
49 | char publisher_id [ISODCL (319, 446)]; /* achars */ |
50 | char preparer_id [ISODCL (447, 574)]; /* achars */ |
51 | char application_id [ISODCL (575, 702)]; /* achars */ |
52 | char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ |
53 | char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ |
54 | char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ |
55 | __u8 creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ |
56 | __u8 modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ |
57 | __u8 expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ |
58 | __u8 effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ |
59 | __u8 file_structure_version [ISODCL (882, 882)]; /* 711 */ |
60 | __u8 unused4 [ISODCL (883, 883)]; |
61 | __u8 application_data [ISODCL (884, 1395)]; |
62 | __u8 unused5 [ISODCL (1396, 2048)]; |
63 | }; |
64 | |
65 | /* Almost the same as the primary descriptor but two fields are specified */ |
66 | struct iso_supplementary_descriptor { |
67 | __u8 type [ISODCL ( 1, 1)]; /* 711 */ |
68 | char id [ISODCL ( 2, 6)]; |
69 | __u8 version [ISODCL ( 7, 7)]; /* 711 */ |
70 | __u8 flags [ISODCL ( 8, 8)]; /* 853 */ |
71 | char system_id [ISODCL ( 9, 40)]; /* achars */ |
72 | char volume_id [ISODCL ( 41, 72)]; /* dchars */ |
73 | __u8 unused2 [ISODCL ( 73, 80)]; |
74 | __u8 volume_space_size [ISODCL ( 81, 88)]; /* 733 */ |
75 | __u8 escape [ISODCL ( 89, 120)]; /* 856 */ |
76 | __u8 volume_set_size [ISODCL (121, 124)]; /* 723 */ |
77 | __u8 volume_sequence_number [ISODCL (125, 128)]; /* 723 */ |
78 | __u8 logical_block_size [ISODCL (129, 132)]; /* 723 */ |
79 | __u8 path_table_size [ISODCL (133, 140)]; /* 733 */ |
80 | __u8 type_l_path_table [ISODCL (141, 144)]; /* 731 */ |
81 | __u8 opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ |
82 | __u8 type_m_path_table [ISODCL (149, 152)]; /* 732 */ |
83 | __u8 opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ |
84 | __u8 root_directory_record [ISODCL (157, 190)]; /* 9.1 */ |
85 | char volume_set_id [ISODCL (191, 318)]; /* dchars */ |
86 | char publisher_id [ISODCL (319, 446)]; /* achars */ |
87 | char preparer_id [ISODCL (447, 574)]; /* achars */ |
88 | char application_id [ISODCL (575, 702)]; /* achars */ |
89 | char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ |
90 | char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ |
91 | char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ |
92 | __u8 creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ |
93 | __u8 modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ |
94 | __u8 expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ |
95 | __u8 effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ |
96 | __u8 file_structure_version [ISODCL (882, 882)]; /* 711 */ |
97 | __u8 unused4 [ISODCL (883, 883)]; |
98 | __u8 application_data [ISODCL (884, 1395)]; |
99 | __u8 unused5 [ISODCL (1396, 2048)]; |
100 | }; |
101 | |
102 | |
103 | #define HS_STANDARD_ID "CDROM" |
104 | |
105 | struct hs_volume_descriptor { |
106 | __u8 foo [ISODCL ( 1, 8)]; /* 733 */ |
107 | __u8 type [ISODCL ( 9, 9)]; /* 711 */ |
108 | char id [ISODCL ( 10, 14)]; |
109 | __u8 version [ISODCL ( 15, 15)]; /* 711 */ |
110 | __u8 data[ISODCL(16,2048)]; |
111 | }; |
112 | |
113 | |
114 | struct hs_primary_descriptor { |
115 | __u8 foo [ISODCL ( 1, 8)]; /* 733 */ |
116 | __u8 type [ISODCL ( 9, 9)]; /* 711 */ |
117 | __u8 id [ISODCL ( 10, 14)]; |
118 | __u8 version [ISODCL ( 15, 15)]; /* 711 */ |
119 | __u8 unused1 [ISODCL ( 16, 16)]; /* 711 */ |
120 | char system_id [ISODCL ( 17, 48)]; /* achars */ |
121 | char volume_id [ISODCL ( 49, 80)]; /* dchars */ |
122 | __u8 unused2 [ISODCL ( 81, 88)]; /* 733 */ |
123 | __u8 volume_space_size [ISODCL ( 89, 96)]; /* 733 */ |
124 | __u8 unused3 [ISODCL ( 97, 128)]; /* 733 */ |
125 | __u8 volume_set_size [ISODCL (129, 132)]; /* 723 */ |
126 | __u8 volume_sequence_number [ISODCL (133, 136)]; /* 723 */ |
127 | __u8 logical_block_size [ISODCL (137, 140)]; /* 723 */ |
128 | __u8 path_table_size [ISODCL (141, 148)]; /* 733 */ |
129 | __u8 type_l_path_table [ISODCL (149, 152)]; /* 731 */ |
130 | __u8 unused4 [ISODCL (153, 180)]; /* 733 */ |
131 | __u8 root_directory_record [ISODCL (181, 214)]; /* 9.1 */ |
132 | }; |
133 | |
134 | /* We use this to help us look up the parent inode numbers. */ |
135 | |
136 | struct iso_path_table{ |
137 | __u8 name_len[2]; /* 721 */ |
138 | __u8 extent[4]; /* 731 */ |
139 | __u8 parent[2]; /* 721 */ |
140 | char name[]; |
141 | } __attribute__((packed)); |
142 | |
143 | /* high sierra is identical to iso, except that the date is only 6 bytes, and |
144 | there is an extra reserved byte after the flags */ |
145 | |
146 | struct iso_directory_record { |
147 | __u8 length [ISODCL (1, 1)]; /* 711 */ |
148 | __u8 ext_attr_length [ISODCL (2, 2)]; /* 711 */ |
149 | __u8 extent [ISODCL (3, 10)]; /* 733 */ |
150 | __u8 size [ISODCL (11, 18)]; /* 733 */ |
151 | __u8 date [ISODCL (19, 25)]; /* 7 by 711 */ |
152 | __u8 flags [ISODCL (26, 26)]; |
153 | __u8 file_unit_size [ISODCL (27, 27)]; /* 711 */ |
154 | __u8 interleave [ISODCL (28, 28)]; /* 711 */ |
155 | __u8 volume_sequence_number [ISODCL (29, 32)]; /* 723 */ |
156 | __u8 name_len [ISODCL (33, 33)]; /* 711 */ |
157 | char name []; |
158 | } __attribute__((packed)); |
159 | |
160 | #define ISOFS_BLOCK_BITS 11 |
161 | #define ISOFS_BLOCK_SIZE 2048 |
162 | |
163 | #define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize) |
164 | #define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits) |
165 | |
166 | #endif /* _ISOFS_FS_H */ |
167 | |