5 #include <linux/types.h>
7 * The isofs filesystem constants/structures
10 /* This part borrowed from the bsd386 isofs */
11 #define ISODCL(from, to) (to - from + 1)
13 struct iso_volume_descriptor {
14 char type[ISODCL(1,1)]; /* 711 */
16 char version[ISODCL(7,7)];
17 char data[ISODCL(8,2048)];
20 /* volume descriptor types */
21 #define ISO_VD_PRIMARY 1
22 #define ISO_VD_SUPPLEMENTARY 2
23 #define ISO_VD_END 255
25 #define ISO_STANDARD_ID "CD001"
27 struct iso_primary_descriptor {
28 char type [ISODCL ( 1, 1)]; /* 711 */
29 char id [ISODCL ( 2, 6)];
30 char version [ISODCL ( 7, 7)]; /* 711 */
31 char unused1 [ISODCL ( 8, 8)];
32 char system_id [ISODCL ( 9, 40)]; /* achars */
33 char volume_id [ISODCL ( 41, 72)]; /* dchars */
34 char unused2 [ISODCL ( 73, 80)];
35 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
36 char unused3 [ISODCL ( 89, 120)];
37 char volume_set_size [ISODCL (121, 124)]; /* 723 */
38 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
39 char logical_block_size [ISODCL (129, 132)]; /* 723 */
40 char path_table_size [ISODCL (133, 140)]; /* 733 */
41 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
42 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
43 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
44 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
45 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
46 char volume_set_id [ISODCL (191, 318)]; /* dchars */
47 char publisher_id [ISODCL (319, 446)]; /* achars */
48 char preparer_id [ISODCL (447, 574)]; /* achars */
49 char application_id [ISODCL (575, 702)]; /* achars */
50 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
51 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
52 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
53 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
54 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
55 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
56 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
57 char file_structure_version [ISODCL (882, 882)]; /* 711 */
58 char unused4 [ISODCL (883, 883)];
59 char application_data [ISODCL (884, 1395)];
60 char unused5 [ISODCL (1396, 2048)];
63 /* Almost the same as the primary descriptor but two fields are specified */
64 struct iso_supplementary_descriptor {
65 char type [ISODCL ( 1, 1)]; /* 711 */
66 char id [ISODCL ( 2, 6)];
67 char version [ISODCL ( 7, 7)]; /* 711 */
68 char flags [ISODCL ( 8, 8)]; /* 853 */
69 char system_id [ISODCL ( 9, 40)]; /* achars */
70 char volume_id [ISODCL ( 41, 72)]; /* dchars */
71 char unused2 [ISODCL ( 73, 80)];
72 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
73 char escape [ISODCL ( 89, 120)]; /* 856 */
74 char volume_set_size [ISODCL (121, 124)]; /* 723 */
75 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
76 char logical_block_size [ISODCL (129, 132)]; /* 723 */
77 char path_table_size [ISODCL (133, 140)]; /* 733 */
78 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
79 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
80 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
81 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
82 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
83 char volume_set_id [ISODCL (191, 318)]; /* dchars */
84 char publisher_id [ISODCL (319, 446)]; /* achars */
85 char preparer_id [ISODCL (447, 574)]; /* achars */
86 char application_id [ISODCL (575, 702)]; /* achars */
87 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
88 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
89 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
90 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
91 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
92 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
93 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
94 char file_structure_version [ISODCL (882, 882)]; /* 711 */
95 char unused4 [ISODCL (883, 883)];
96 char application_data [ISODCL (884, 1395)];
97 char unused5 [ISODCL (1396, 2048)];
101 #define HS_STANDARD_ID "CDROM"
103 struct hs_volume_descriptor {
104 char foo [ISODCL ( 1, 8)]; /* 733 */
105 char type [ISODCL ( 9, 9)]; /* 711 */
106 char id [ISODCL ( 10, 14)];
107 char version [ISODCL ( 15, 15)]; /* 711 */
108 char data[ISODCL(16,2048)];
112 struct hs_primary_descriptor {
113 char foo [ISODCL ( 1, 8)]; /* 733 */
114 char type [ISODCL ( 9, 9)]; /* 711 */
115 char id [ISODCL ( 10, 14)];
116 char version [ISODCL ( 15, 15)]; /* 711 */
117 char unused1 [ISODCL ( 16, 16)]; /* 711 */
118 char system_id [ISODCL ( 17, 48)]; /* achars */
119 char volume_id [ISODCL ( 49, 80)]; /* dchars */
120 char unused2 [ISODCL ( 81, 88)]; /* 733 */
121 char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
122 char unused3 [ISODCL ( 97, 128)]; /* 733 */
123 char volume_set_size [ISODCL (129, 132)]; /* 723 */
124 char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
125 char logical_block_size [ISODCL (137, 140)]; /* 723 */
126 char path_table_size [ISODCL (141, 148)]; /* 733 */
127 char type_l_path_table [ISODCL (149, 152)]; /* 731 */
128 char unused4 [ISODCL (153, 180)]; /* 733 */
129 char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
132 /* We use this to help us look up the parent inode numbers. */
134 struct iso_path_table{
135 unsigned char name_len[2]; /* 721 */
136 char extent[4]; /* 731 */
137 char parent[2]; /* 721 */
139 } __attribute__((packed));
141 /* high sierra is identical to iso, except that the date is only 6 bytes, and
142 there is an extra reserved byte after the flags */
144 struct iso_directory_record {
145 char length [ISODCL (1, 1)]; /* 711 */
146 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
147 char extent [ISODCL (3, 10)]; /* 733 */
148 char size [ISODCL (11, 18)]; /* 733 */
149 char date [ISODCL (19, 25)]; /* 7 by 711 */
150 char flags [ISODCL (26, 26)];
151 char file_unit_size [ISODCL (27, 27)]; /* 711 */
152 char interleave [ISODCL (28, 28)]; /* 711 */
153 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
154 unsigned char name_len [ISODCL (33, 33)]; /* 711 */
156 } __attribute__((packed));
158 #define ISOFS_BLOCK_BITS 11
159 #define ISOFS_BLOCK_SIZE 2048
161 #define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize)
162 #define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits)
164 #define ISOFS_SUPER_MAGIC 0x9660
167 /* Number conversion inlines, named after the section in ISO 9660
168 they correspond to. */
170 #include <asm/byteorder.h>
171 #include <asm/unaligned.h>
172 #include <linux/iso_fs_i.h>
173 #include <linux/iso_fs_sb.h>
175 static inline struct isofs_sb_info *ISOFS_SB(struct super_block *sb)
177 return sb->s_fs_info;
180 static inline struct iso_inode_info *ISOFS_I(struct inode *inode)
182 return container_of(inode, struct iso_inode_info, vfs_inode);
185 static inline int isonum_711(char *p)
189 static inline int isonum_712(char *p)
193 static inline int isonum_721(char *p)
195 return le16_to_cpu(get_unaligned((u16 *)p));
197 static inline int isonum_722(char *p)
199 return be16_to_cpu(get_unaligned((u16 *)p));
201 static inline int isonum_723(char *p)
203 /* Ignore bigendian datum due to broken mastering programs */
204 return le16_to_cpu(get_unaligned((u16 *)p));
206 static inline int isonum_731(char *p)
208 return le32_to_cpu(get_unaligned((u32 *)p));
210 static inline int isonum_732(char *p)
212 return be32_to_cpu(get_unaligned((u32 *)p));
214 static inline int isonum_733(char *p)
216 /* Ignore bigendian datum due to broken mastering programs */
217 return le32_to_cpu(get_unaligned((u32 *)p));
219 extern int iso_date(char *, int);
221 struct inode; /* To make gcc happy */
223 extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *);
224 extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *);
225 extern int isofs_name_translate(struct iso_directory_record *, char *, struct inode *);
227 int get_joliet_filename(struct iso_directory_record *, unsigned char *, struct inode *);
228 int get_acorn_filename(struct iso_directory_record *, char *, struct inode *);
230 extern struct dentry *isofs_lookup(struct inode *, struct dentry *, struct nameidata *);
231 extern struct buffer_head *isofs_bread(struct inode *, sector_t);
232 extern int isofs_get_blocks(struct inode *, sector_t, struct buffer_head **, unsigned long);
234 extern struct inode_operations isofs_dir_inode_operations;
235 extern struct file_operations isofs_dir_operations;
236 extern struct address_space_operations isofs_symlink_aops;
238 /* The following macros are used to check for memory leaks. */
240 #define free_s leak_check_free_s
241 #define malloc leak_check_malloc
242 #define sb_bread leak_check_bread
243 #define brelse leak_check_brelse
244 extern void * leak_check_malloc(unsigned int size);
245 extern void leak_check_free_s(void * obj, int size);
246 extern struct buffer_head * leak_check_bread(struct super_block *sb, int block);
247 extern void leak_check_brelse(struct buffer_head * bh);
248 #endif /* LEAK_CHECK */
250 #endif /* __KERNEL__ */