1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
#ifndef _ISOFS_FS_H
#define _ISOFS_FS_H
#include <linux/types.h>
/*
* The isofs filesystem constants/structures
*/
/* This part borrowed from the bsd386 isofs */
#define ISODCL(from, to) (to - from + 1)
struct iso_volume_descriptor {
char type[ISODCL(1,1)]; /* 711 */
char id[ISODCL(2,6)];
char version[ISODCL(7,7)];
char data[ISODCL(8,2048)];
};
/* volume descriptor types */
#define ISO_VD_PRIMARY 1
#define ISO_VD_SUPPLEMENTARY 2
#define ISO_VD_END 255
#define ISO_STANDARD_ID "CD001"
struct iso_primary_descriptor {
char type [ISODCL ( 1, 1)]; /* 711 */
char id [ISODCL ( 2, 6)];
char version [ISODCL ( 7, 7)]; /* 711 */
char unused1 [ISODCL ( 8, 8)];
char system_id [ISODCL ( 9, 40)]; /* achars */
char volume_id [ISODCL ( 41, 72)]; /* dchars */
char unused2 [ISODCL ( 73, 80)];
char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
char unused3 [ISODCL ( 89, 120)];
char volume_set_size [ISODCL (121, 124)]; /* 723 */
char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
char logical_block_size [ISODCL (129, 132)]; /* 723 */
char path_table_size [ISODCL (133, 140)]; /* 733 */
char type_l_path_table [ISODCL (141, 144)]; /* 731 */
char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
char type_m_path_table [ISODCL (149, 152)]; /* 732 */
char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
char volume_set_id [ISODCL (191, 318)]; /* dchars */
char publisher_id [ISODCL (319, 446)]; /* achars */
char preparer_id [ISODCL (447, 574)]; /* achars */
char application_id [ISODCL (575, 702)]; /* achars */
char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
char file_structure_version [ISODCL (882, 882)]; /* 711 */
char unused4 [ISODCL (883, 883)];
char application_data [ISODCL (884, 1395)];
char unused5 [ISODCL (1396, 2048)];
};
/* Almost the same as the primary descriptor but two fields are specified */
struct iso_supplementary_descriptor {
char type [ISODCL ( 1, 1)]; /* 711 */
char id [ISODCL ( 2, 6)];
char version [ISODCL ( 7, 7)]; /* 711 */
char flags [ISODCL ( 8, 8)]; /* 853 */
char system_id [ISODCL ( 9, 40)]; /* achars */
char volume_id [ISODCL ( 41, 72)]; /* dchars */
char unused2 [ISODCL ( 73, 80)];
char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
char escape [ISODCL ( 89, 120)]; /* 856 */
char volume_set_size [ISODCL (121, 124)]; /* 723 */
char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
char logical_block_size [ISODCL (129, 132)]; /* 723 */
char path_table_size [ISODCL (133, 140)]; /* 733 */
char type_l_path_table [ISODCL (141, 144)]; /* 731 */
char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
char type_m_path_table [ISODCL (149, 152)]; /* 732 */
char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
char volume_set_id [ISODCL (191, 318)]; /* dchars */
char publisher_id [ISODCL (319, 446)]; /* achars */
char preparer_id [ISODCL (447, 574)]; /* achars */
char application_id [ISODCL (575, 702)]; /* achars */
char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
char file_structure_version [ISODCL (882, 882)]; /* 711 */
char unused4 [ISODCL (883, 883)];
char application_data [ISODCL (884, 1395)];
char unused5 [ISODCL (1396, 2048)];
};
#define HS_STANDARD_ID "CDROM"
struct hs_volume_descriptor {
char foo [ISODCL ( 1, 8)]; /* 733 */
char type [ISODCL ( 9, 9)]; /* 711 */
char id [ISODCL ( 10, 14)];
char version [ISODCL ( 15, 15)]; /* 711 */
char data[ISODCL(16,2048)];
};
struct hs_primary_descriptor {
char foo [ISODCL ( 1, 8)]; /* 733 */
char type [ISODCL ( 9, 9)]; /* 711 */
char id [ISODCL ( 10, 14)];
char version [ISODCL ( 15, 15)]; /* 711 */
char unused1 [ISODCL ( 16, 16)]; /* 711 */
char system_id [ISODCL ( 17, 48)]; /* achars */
char volume_id [ISODCL ( 49, 80)]; /* dchars */
char unused2 [ISODCL ( 81, 88)]; /* 733 */
char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
char unused3 [ISODCL ( 97, 128)]; /* 733 */
char volume_set_size [ISODCL (129, 132)]; /* 723 */
char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
char logical_block_size [ISODCL (137, 140)]; /* 723 */
char path_table_size [ISODCL (141, 148)]; /* 733 */
char type_l_path_table [ISODCL (149, 152)]; /* 731 */
char unused4 [ISODCL (153, 180)]; /* 733 */
char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
};
/* We use this to help us look up the parent inode numbers. */
struct iso_path_table{
unsigned char name_len[2]; /* 721 */
char extent[4]; /* 731 */
char parent[2]; /* 721 */
char name[0];
};
/* high sierra is identical to iso, except that the date is only 6 bytes, and
there is an extra reserved byte after the flags */
struct iso_directory_record {
char length [ISODCL (1, 1)]; /* 711 */
char ext_attr_length [ISODCL (2, 2)]; /* 711 */
char extent [ISODCL (3, 10)]; /* 733 */
char size [ISODCL (11, 18)]; /* 733 */
char date [ISODCL (19, 25)]; /* 7 by 711 */
char flags [ISODCL (26, 26)];
char file_unit_size [ISODCL (27, 27)]; /* 711 */
char interleave [ISODCL (28, 28)]; /* 711 */
char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
unsigned char name_len [ISODCL (33, 33)]; /* 711 */
char name [0];
};
#define ISOFS_BLOCK_BITS 11
#define ISOFS_BLOCK_SIZE 2048
#define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize)
#define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits)
#define ISOFS_ZONE_BITS(INODE) ((INODE)->i_sb->u.isofs_sb.s_log_zone_size)
#define ISOFS_SUPER_MAGIC 0x9660
#define ISOFS_FILE_UNKNOWN 0
#define ISOFS_FILE_TEXT 1
#define ISOFS_FILE_BINARY 2
#define ISOFS_FILE_TEXT_M 3
#ifdef __KERNEL__
extern int isonum_711(char *);
extern int isonum_712(char *);
extern int isonum_721(char *);
extern int isonum_722(char *);
extern int isonum_723(char *);
extern int isonum_731(char *);
extern int isonum_732(char *);
extern int isonum_733(char *);
extern int iso_date(char *, int);
extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *);
extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *);
extern char * get_rock_ridge_symlink(struct inode *);
extern int find_rock_ridge_relocation(struct iso_directory_record *, struct inode *);
int get_joliet_filename(struct iso_directory_record *, struct inode *, unsigned char *);
/* The stuff that follows may be totally unneeded. I have not checked to see
which prototypes we are still using. */
extern int isofs_open(struct inode * inode, struct file * filp);
extern void isofs_release(struct inode * inode, struct file * filp);
extern int isofs_lookup(struct inode * dir, struct dentry *);
extern unsigned long isofs_count_free_inodes(struct super_block *sb);
extern int isofs_new_block(int dev);
extern int isofs_free_block(int dev, int block);
extern int isofs_bmap(struct inode *,int);
extern void isofs_put_super(struct super_block *);
extern struct super_block *isofs_read_super(struct super_block *,void *,int);
extern int init_iso9660_fs(void);
extern void isofs_read_inode(struct inode *);
extern void isofs_put_inode(struct inode *);
extern int isofs_statfs(struct super_block *, struct statfs *, int);
extern int isofs_lseek(struct inode *, struct file *, off_t, int);
extern int isofs_read(struct inode *, struct file *, char *, int);
extern int isofs_lookup_grandparent(struct inode *, int);
extern struct inode_operations isofs_file_inode_operations;
extern struct inode_operations isofs_dir_inode_operations;
extern struct inode_operations isofs_symlink_inode_operations;
extern struct inode_operations isofs_chrdev_inode_operations;
extern struct inode_operations isofs_blkdev_inode_operations;
extern struct inode_operations isofs_fifo_inode_operations;
/* The following macros are used to check for memory leaks. */
#ifdef LEAK_CHECK
#define free_s leak_check_free_s
#define malloc leak_check_malloc
#define bread leak_check_bread
#define brelse leak_check_brelse
extern void * leak_check_malloc(unsigned int size);
extern void leak_check_free_s(void * obj, int size);
extern struct buffer_head * leak_check_bread(int dev, int block, int size);
extern void leak_check_brelse(struct buffer_head * bh);
#endif /* LEAK_CHECK */
#endif /* __KERNEL__ */
#endif
|
