1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_UDF_SB_H
3 #define __LINUX_UDF_SB_H
5 #include <linux/mutex.h>
6 #include <linux/bitops.h>
7 #include <linux/magic.h>
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.
13 #define UDF_MAX_READ_VERSION 0x0260
14 #define UDF_MAX_WRITE_VERSION 0x0201
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_UID_FORGET 11 /* save -1 for uid to disk */
27 #define UDF_FLAG_GID_FORGET 12
28 #define UDF_FLAG_UID_SET 13
29 #define UDF_FLAG_GID_SET 14
30 #define UDF_FLAG_SESSION_SET 15
31 #define UDF_FLAG_LASTBLOCK_SET 16
32 #define UDF_FLAG_BLOCKSIZE_SET 17
33 #define UDF_FLAG_INCONSISTENT 18
34 #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible
37 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
38 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
39 #define UDF_PART_FLAG_READ_ONLY 0x0010
40 #define UDF_PART_FLAG_WRITE_ONCE 0x0020
41 #define UDF_PART_FLAG_REWRITABLE 0x0040
42 #define UDF_PART_FLAG_OVERWRITABLE 0x0080
44 #define UDF_MAX_BLOCK_LOADED 8
46 #define UDF_TYPE1_MAP15 0x1511U
47 #define UDF_VIRTUAL_MAP15 0x1512U
48 #define UDF_VIRTUAL_MAP20 0x2012U
49 #define UDF_SPARABLE_MAP15 0x1522U
50 #define UDF_METADATA_MAP25 0x2511U
52 #define UDF_INVALID_MODE ((umode_t)-1)
54 #define MF_DUPLICATE_MD 0x01
55 #define MF_MIRROR_FE_LOADED 0x02
57 #define EFSCORRUPTED EUCLEAN
59 struct udf_meta_data {
60 __u32 s_meta_file_loc;
61 __u32 s_mirror_file_loc;
62 __u32 s_bitmap_file_loc;
63 __u32 s_alloc_unit_size;
64 __u16 s_align_unit_size;
66 * Partition Reference Number of the associated physical / sparable
69 __u16 s_phys_partition_ref;
71 struct inode *s_metadata_fe;
72 struct inode *s_mirror_fe;
73 struct inode *s_bitmap_fe;
76 struct udf_sparing_data {
78 struct buffer_head *s_spar_map[4];
81 struct udf_virtual_data {
89 struct buffer_head *s_block_bitmap[] __counted_by(s_nr_groups);
94 struct udf_bitmap *s_bitmap;
95 struct inode *s_table;
97 __u32 s_partition_root;
98 __u32 s_partition_len;
99 __u16 s_partition_type;
100 __u16 s_partition_num;
102 struct udf_sparing_data s_sparing;
103 struct udf_virtual_data s_virtual;
104 struct udf_meta_data s_metadata;
106 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
107 __u16 s_volumeseqnum;
108 __u16 s_partition_flags;
114 struct udf_part_map *s_partmaps;
115 __u8 s_volume_ident[32];
126 struct buffer_head *s_lvid_bh;
128 /* Default permissions */
134 /* Lock protecting consistency of above permission settings */
135 rwlock_t s_cred_lock;
138 struct timespec64 s_record_time;
141 __u16 s_serial_number;
143 /* highest UDF revision we have recorded to this media */
146 /* Miscellaneous flags */
147 unsigned long s_flags;
150 struct nls_table *s_nls_map;
153 struct inode *s_vat_inode;
155 struct mutex s_alloc_mutex;
156 /* Protected by s_alloc_mutex */
157 unsigned int s_lvid_dirty;
160 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
162 return sb->s_fs_info;
165 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
167 int udf_compute_nr_groups(struct super_block *sb, u32 partition);
169 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
171 return test_bit(flag, &UDF_SB(sb)->s_flags);
174 static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
176 set_bit(flag, &UDF_SB(sb)->s_flags);
179 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
181 clear_bit(flag, &UDF_SB(sb)->s_flags);
184 #endif /* __LINUX_UDF_SB_H */