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1 | #ifndef __LINUX_UDF_SB_H | |
2 | #define __LINUX_UDF_SB_H | |
3 | ||
4 | #include <linux/mutex.h> | |
5 | #include <linux/bitops.h> | |
6 | ||
7 | /* Since UDF 2.01 is ISO 13346 based... */ | |
8 | #define UDF_SUPER_MAGIC 0x15013346 | |
9 | ||
10 | #define UDF_MAX_READ_VERSION 0x0250 | |
11 | #define UDF_MAX_WRITE_VERSION 0x0201 | |
12 | ||
13 | #define UDF_FLAG_USE_EXTENDED_FE 0 | |
14 | #define UDF_VERS_USE_EXTENDED_FE 0x0200 | |
15 | #define UDF_FLAG_USE_STREAMS 1 | |
16 | #define UDF_VERS_USE_STREAMS 0x0200 | |
17 | #define UDF_FLAG_USE_SHORT_AD 2 | |
18 | #define UDF_FLAG_USE_AD_IN_ICB 3 | |
19 | #define UDF_FLAG_USE_FILE_CTIME_EA 4 | |
20 | #define UDF_FLAG_STRICT 5 | |
21 | #define UDF_FLAG_UNDELETE 6 | |
22 | #define UDF_FLAG_UNHIDE 7 | |
23 | #define UDF_FLAG_VARCONV 8 | |
24 | #define UDF_FLAG_NLS_MAP 9 | |
25 | #define UDF_FLAG_UTF8 10 | |
26 | #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */ | |
27 | #define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */ | |
28 | #define UDF_FLAG_GID_FORGET 13 | |
29 | #define UDF_FLAG_GID_IGNORE 14 | |
30 | #define UDF_FLAG_UID_SET 15 | |
31 | #define UDF_FLAG_GID_SET 16 | |
32 | #define UDF_FLAG_SESSION_SET 17 | |
33 | #define UDF_FLAG_LASTBLOCK_SET 18 | |
34 | #define UDF_FLAG_BLOCKSIZE_SET 19 | |
35 | ||
36 | #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 | |
37 | #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 | |
38 | #define UDF_PART_FLAG_FREED_BITMAP 0x0004 | |
39 | #define UDF_PART_FLAG_FREED_TABLE 0x0008 | |
40 | #define UDF_PART_FLAG_READ_ONLY 0x0010 | |
41 | #define UDF_PART_FLAG_WRITE_ONCE 0x0020 | |
42 | #define UDF_PART_FLAG_REWRITABLE 0x0040 | |
43 | #define UDF_PART_FLAG_OVERWRITABLE 0x0080 | |
44 | ||
45 | #define UDF_MAX_BLOCK_LOADED 8 | |
46 | ||
47 | #define UDF_TYPE1_MAP15 0x1511U | |
48 | #define UDF_VIRTUAL_MAP15 0x1512U | |
49 | #define UDF_VIRTUAL_MAP20 0x2012U | |
50 | #define UDF_SPARABLE_MAP15 0x1522U | |
51 | #define UDF_METADATA_MAP25 0x2511U | |
52 | ||
53 | #define UDF_INVALID_MODE ((mode_t)-1) | |
54 | ||
55 | #pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */ | |
56 | ||
57 | #define MF_DUPLICATE_MD 0x01 | |
58 | #define MF_MIRROR_FE_LOADED 0x02 | |
59 | ||
60 | struct udf_meta_data { | |
61 | __u32 s_meta_file_loc; | |
62 | __u32 s_mirror_file_loc; | |
63 | __u32 s_bitmap_file_loc; | |
64 | __u32 s_alloc_unit_size; | |
65 | __u16 s_align_unit_size; | |
66 | int s_flags; | |
67 | struct inode *s_metadata_fe; | |
68 | struct inode *s_mirror_fe; | |
69 | struct inode *s_bitmap_fe; | |
70 | }; | |
71 | ||
72 | struct udf_sparing_data { | |
73 | __u16 s_packet_len; | |
74 | struct buffer_head *s_spar_map[4]; | |
75 | }; | |
76 | ||
77 | struct udf_virtual_data { | |
78 | __u32 s_num_entries; | |
79 | __u16 s_start_offset; | |
80 | }; | |
81 | ||
82 | struct udf_bitmap { | |
83 | __u32 s_extLength; | |
84 | __u32 s_extPosition; | |
85 | __u16 s_nr_groups; | |
86 | struct buffer_head **s_block_bitmap; | |
87 | }; | |
88 | ||
89 | struct udf_part_map { | |
90 | union { | |
91 | struct udf_bitmap *s_bitmap; | |
92 | struct inode *s_table; | |
93 | } s_uspace; | |
94 | union { | |
95 | struct udf_bitmap *s_bitmap; | |
96 | struct inode *s_table; | |
97 | } s_fspace; | |
98 | __u32 s_partition_root; | |
99 | __u32 s_partition_len; | |
100 | __u16 s_partition_type; | |
101 | __u16 s_partition_num; | |
102 | union { | |
103 | struct udf_sparing_data s_sparing; | |
104 | struct udf_virtual_data s_virtual; | |
105 | struct udf_meta_data s_metadata; | |
106 | } s_type_specific; | |
107 | __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); | |
108 | __u16 s_volumeseqnum; | |
109 | __u16 s_partition_flags; | |
110 | }; | |
111 | ||
112 | #pragma pack() | |
113 | ||
114 | struct udf_sb_info { | |
115 | struct udf_part_map *s_partmaps; | |
116 | __u8 s_volume_ident[32]; | |
117 | ||
118 | /* Overall info */ | |
119 | __u16 s_partitions; | |
120 | __u16 s_partition; | |
121 | ||
122 | /* Sector headers */ | |
123 | __s32 s_session; | |
124 | __u32 s_anchor; | |
125 | __u32 s_last_block; | |
126 | ||
127 | struct buffer_head *s_lvid_bh; | |
128 | ||
129 | /* Default permissions */ | |
130 | mode_t s_umask; | |
131 | gid_t s_gid; | |
132 | uid_t s_uid; | |
133 | mode_t s_fmode; | |
134 | mode_t s_dmode; | |
135 | /* Lock protecting consistency of above permission settings */ | |
136 | rwlock_t s_cred_lock; | |
137 | ||
138 | /* Root Info */ | |
139 | struct timespec s_record_time; | |
140 | ||
141 | /* Fileset Info */ | |
142 | __u16 s_serial_number; | |
143 | ||
144 | /* highest UDF revision we have recorded to this media */ | |
145 | __u16 s_udfrev; | |
146 | ||
147 | /* Miscellaneous flags */ | |
148 | unsigned long s_flags; | |
149 | ||
150 | /* Encoding info */ | |
151 | struct nls_table *s_nls_map; | |
152 | ||
153 | /* VAT inode */ | |
154 | struct inode *s_vat_inode; | |
155 | ||
156 | struct mutex s_alloc_mutex; | |
157 | /* Protected by s_alloc_mutex */ | |
158 | unsigned int s_lvid_dirty; | |
159 | }; | |
160 | ||
161 | static inline struct udf_sb_info *UDF_SB(struct super_block *sb) | |
162 | { | |
163 | return sb->s_fs_info; | |
164 | } | |
165 | ||
166 | struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi); | |
167 | ||
168 | int udf_compute_nr_groups(struct super_block *sb, u32 partition); | |
169 | ||
170 | static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) | |
171 | { | |
172 | return test_bit(flag, &UDF_SB(sb)->s_flags); | |
173 | } | |
174 | ||
175 | static inline void UDF_SET_FLAG(struct super_block *sb, int flag) | |
176 | { | |
177 | set_bit(flag, &UDF_SB(sb)->s_flags); | |
178 | } | |
179 | ||
180 | static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) | |
181 | { | |
182 | clear_bit(flag, &UDF_SB(sb)->s_flags); | |
183 | } | |
184 | ||
185 | #endif /* __LINUX_UDF_SB_H */ |