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
14struct 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
28struct 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 */
65struct 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
104struct  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
113struct 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
135struct 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
145struct 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