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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/*
10 * Even UDF 2.6 media should have version <= 0x250 but apparently there are
11 * some broken filesystems with version set to 0x260. Accommodate those.
12 */
13#define UDF_MAX_READ_VERSION 0x0260
14#define UDF_MAX_WRITE_VERSION 0x0201
15
16#define UDF_FLAG_USE_EXTENDED_FE 0
17#define UDF_VERS_USE_EXTENDED_FE 0x0200
18#define UDF_FLAG_USE_STREAMS 1
19#define UDF_VERS_USE_STREAMS 0x0200
20#define UDF_FLAG_USE_SHORT_AD 2
21#define UDF_FLAG_USE_AD_IN_ICB 3
22#define UDF_FLAG_USE_FILE_CTIME_EA 4
23#define UDF_FLAG_STRICT 5
24#define UDF_FLAG_UNDELETE 6
25#define UDF_FLAG_UNHIDE 7
26#define UDF_FLAG_NOVRS 8
27#define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
28#define UDF_FLAG_GID_FORGET 12
29#define UDF_FLAG_UID_SET 13
30#define UDF_FLAG_GID_SET 14
31#define UDF_FLAG_SESSION_SET 15
32#define UDF_FLAG_LASTBLOCK_SET 16
33#define UDF_FLAG_BLOCKSIZE_SET 17
34#define UDF_FLAG_INCONSISTENT 18
35#define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible
36 * feature */
37
38#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
39#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
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#define MF_DUPLICATE_MD 0x01
56#define MF_MIRROR_FE_LOADED 0x02
57
58#define EFSCORRUPTED EUCLEAN
59
60struct 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 /*
67 * Partition Reference Number of the associated physical / sparable
68 * partition
69 */
70 __u16 s_phys_partition_ref;
71 int s_flags;
72 struct inode *s_metadata_fe;
73 struct inode *s_mirror_fe;
74 struct inode *s_bitmap_fe;
75};
76
77struct udf_sparing_data {
78 __u16 s_packet_len;
79 struct buffer_head *s_spar_map[4];
80};
81
82struct udf_virtual_data {
83 __u32 s_num_entries;
84 __u16 s_start_offset;
85};
86
87struct udf_bitmap {
88 __u32 s_extPosition;
89 int s_nr_groups;
90 struct buffer_head *s_block_bitmap[] __counted_by(s_nr_groups);
91};
92
93struct udf_part_map {
94 union {
95 struct udf_bitmap *s_bitmap;
96 struct inode *s_table;
97 } s_uspace;
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
114struct 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 umode_t s_umask;
131 kgid_t s_gid;
132 kuid_t s_uid;
133 umode_t s_fmode;
134 umode_t s_dmode;
135 /* Lock protecting consistency of above permission settings */
136 rwlock_t s_cred_lock;
137
138 /* Root Info */
139 struct timespec64 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
161static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
162{
163 return sb->s_fs_info;
164}
165
166struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
167
168int udf_compute_nr_groups(struct super_block *sb, u32 partition);
169
170static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
171{
172 return test_bit(flag, &UDF_SB(sb)->s_flags);
173}
174
175static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
176{
177 set_bit(flag, &UDF_SB(sb)->s_flags);
178}
179
180static 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 */
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 ((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
60struct 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
72struct udf_sparing_data {
73 __u16 s_packet_len;
74 struct buffer_head *s_spar_map[4];
75};
76
77struct udf_virtual_data {
78 __u32 s_num_entries;
79 __u16 s_start_offset;
80};
81
82struct udf_bitmap {
83 __u32 s_extPosition;
84 int s_nr_groups;
85 struct buffer_head *s_block_bitmap[0];
86};
87
88struct udf_part_map {
89 union {
90 struct udf_bitmap *s_bitmap;
91 struct inode *s_table;
92 } s_uspace;
93 union {
94 struct udf_bitmap *s_bitmap;
95 struct inode *s_table;
96 } s_fspace;
97 __u32 s_partition_root;
98 __u32 s_partition_len;
99 __u16 s_partition_type;
100 __u16 s_partition_num;
101 union {
102 struct udf_sparing_data s_sparing;
103 struct udf_virtual_data s_virtual;
104 struct udf_meta_data s_metadata;
105 } s_type_specific;
106 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
107 __u16 s_volumeseqnum;
108 __u16 s_partition_flags;
109};
110
111#pragma pack()
112
113struct udf_sb_info {
114 struct udf_part_map *s_partmaps;
115 __u8 s_volume_ident[32];
116
117 /* Overall info */
118 __u16 s_partitions;
119 __u16 s_partition;
120
121 /* Sector headers */
122 __s32 s_session;
123 __u32 s_anchor;
124 __u32 s_last_block;
125
126 struct buffer_head *s_lvid_bh;
127
128 /* Default permissions */
129 umode_t s_umask;
130 kgid_t s_gid;
131 kuid_t s_uid;
132 umode_t s_fmode;
133 umode_t s_dmode;
134 /* Lock protecting consistency of above permission settings */
135 rwlock_t s_cred_lock;
136
137 /* Root Info */
138 struct timespec s_record_time;
139
140 /* Fileset Info */
141 __u16 s_serial_number;
142
143 /* highest UDF revision we have recorded to this media */
144 __u16 s_udfrev;
145
146 /* Miscellaneous flags */
147 unsigned long s_flags;
148
149 /* Encoding info */
150 struct nls_table *s_nls_map;
151
152 /* VAT inode */
153 struct inode *s_vat_inode;
154
155 struct mutex s_alloc_mutex;
156 /* Protected by s_alloc_mutex */
157 unsigned int s_lvid_dirty;
158};
159
160static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
161{
162 return sb->s_fs_info;
163}
164
165struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
166
167int udf_compute_nr_groups(struct super_block *sb, u32 partition);
168
169static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
170{
171 return test_bit(flag, &UDF_SB(sb)->s_flags);
172}
173
174static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
175{
176 set_bit(flag, &UDF_SB(sb)->s_flags);
177}
178
179static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
180{
181 clear_bit(flag, &UDF_SB(sb)->s_flags);
182}
183
184#endif /* __LINUX_UDF_SB_H */