1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_UDF_SB_H
3 #define __LINUX_UDF_SB_H
4
5 #include <linux/mutex.h>
6 #include <linux/bitops.h>
7 #include <linux/magic.h>
8
9 #define UDF_MAX_READ_VERSION 0x0250
10 #define UDF_MAX_WRITE_VERSION 0x0201
11
12 #define UDF_FLAG_USE_EXTENDED_FE 0
13 #define UDF_VERS_USE_EXTENDED_FE 0x0200
14 #define UDF_FLAG_USE_STREAMS 1
15 #define UDF_VERS_USE_STREAMS 0x0200
16 #define UDF_FLAG_USE_SHORT_AD 2
17 #define UDF_FLAG_USE_AD_IN_ICB 3
18 #define UDF_FLAG_USE_FILE_CTIME_EA 4
19 #define UDF_FLAG_STRICT 5
20 #define UDF_FLAG_UNDELETE 6
21 #define UDF_FLAG_UNHIDE 7
22 #define UDF_FLAG_VARCONV 8
23 #define UDF_FLAG_NLS_MAP 9
24 #define UDF_FLAG_UTF8 10
25 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
26 #define UDF_FLAG_GID_FORGET 12
27 #define UDF_FLAG_UID_SET 13
28 #define UDF_FLAG_GID_SET 14
29 #define UDF_FLAG_SESSION_SET 15
30 #define UDF_FLAG_LASTBLOCK_SET 16
31 #define UDF_FLAG_BLOCKSIZE_SET 17
32 #define UDF_FLAG_INCONSISTENT 18
33 #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible
34 * feature */
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 ((umode_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 #define EFSCORRUPTED EUCLEAN
61
62 struct udf_meta_data {
63 __u32 s_meta_file_loc;
64 __u32 s_mirror_file_loc;
65 __u32 s_bitmap_file_loc;
66 __u32 s_alloc_unit_size;
67 __u16 s_align_unit_size;
68 /*
69 * Partition Reference Number of the associated physical / sparable
70 * partition
71 */
72 __u16 s_phys_partition_ref;
73 int s_flags;
74 struct inode *s_metadata_fe;
75 struct inode *s_mirror_fe;
76 struct inode *s_bitmap_fe;
77 };
78
79 struct udf_sparing_data {
80 __u16 s_packet_len;
81 struct buffer_head *s_spar_map[4];
82 };
83
84 struct udf_virtual_data {
85 __u32 s_num_entries;
86 __u16 s_start_offset;
87 };
88
89 struct udf_bitmap {
90 __u32 s_extPosition;
91 int s_nr_groups;
92 struct buffer_head *s_block_bitmap[0];
93 };
94
95 struct udf_part_map {
96 union {
97 struct udf_bitmap *s_bitmap;
98 struct inode *s_table;
99 } s_uspace;
100 union {
101 struct udf_bitmap *s_bitmap;
102 struct inode *s_table;
103 } s_fspace;
104 __u32 s_partition_root;
105 __u32 s_partition_len;
106 __u16 s_partition_type;
107 __u16 s_partition_num;
108 union {
109 struct udf_sparing_data s_sparing;
110 struct udf_virtual_data s_virtual;
111 struct udf_meta_data s_metadata;
112 } s_type_specific;
113 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
114 __u16 s_volumeseqnum;
115 __u16 s_partition_flags;
116 };
117
118 #pragma pack()
119
120 struct udf_sb_info {
121 struct udf_part_map *s_partmaps;
122 __u8 s_volume_ident[32];
123
124 /* Overall info */
125 __u16 s_partitions;
126 __u16 s_partition;
127
128 /* Sector headers */
129 __s32 s_session;
130 __u32 s_anchor;
131 __u32 s_last_block;
132
133 struct buffer_head *s_lvid_bh;
134
135 /* Default permissions */
136 umode_t s_umask;
137 kgid_t s_gid;
138 kuid_t s_uid;
139 umode_t s_fmode;
140 umode_t s_dmode;
141 /* Lock protecting consistency of above permission settings */
142 rwlock_t s_cred_lock;
143
144 /* Root Info */
145 struct timespec64 s_record_time;
146
147 /* Fileset Info */
148 __u16 s_serial_number;
149
150 /* highest UDF revision we have recorded to this media */
151 __u16 s_udfrev;
152
153 /* Miscellaneous flags */
154 unsigned long s_flags;
155
156 /* Encoding info */
157 struct nls_table *s_nls_map;
158
159 /* VAT inode */
160 struct inode *s_vat_inode;
161
162 struct mutex s_alloc_mutex;
163 /* Protected by s_alloc_mutex */
164 unsigned int s_lvid_dirty;
165 };
166
UDF_SB(struct super_block * sb)167 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
168 {
169 return sb->s_fs_info;
170 }
171
172 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
173
174 int udf_compute_nr_groups(struct super_block *sb, u32 partition);
175
UDF_QUERY_FLAG(struct super_block * sb,int flag)176 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
177 {
178 return test_bit(flag, &UDF_SB(sb)->s_flags);
179 }
180
UDF_SET_FLAG(struct super_block * sb,int flag)181 static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
182 {
183 set_bit(flag, &UDF_SB(sb)->s_flags);
184 }
185
UDF_CLEAR_FLAG(struct super_block * sb,int flag)186 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
187 {
188 clear_bit(flag, &UDF_SB(sb)->s_flags);
189 }
190
191 #endif /* __LINUX_UDF_SB_H */
192