1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __LINUX_UDF_SB_H
3*4882a593Smuzhiyun #define __LINUX_UDF_SB_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/mutex.h>
6*4882a593Smuzhiyun #include <linux/bitops.h>
7*4882a593Smuzhiyun #include <linux/magic.h>
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #define UDF_MAX_READ_VERSION 0x0250
10*4882a593Smuzhiyun #define UDF_MAX_WRITE_VERSION 0x0201
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #define UDF_FLAG_USE_EXTENDED_FE 0
13*4882a593Smuzhiyun #define UDF_VERS_USE_EXTENDED_FE 0x0200
14*4882a593Smuzhiyun #define UDF_FLAG_USE_STREAMS 1
15*4882a593Smuzhiyun #define UDF_VERS_USE_STREAMS 0x0200
16*4882a593Smuzhiyun #define UDF_FLAG_USE_SHORT_AD 2
17*4882a593Smuzhiyun #define UDF_FLAG_USE_AD_IN_ICB 3
18*4882a593Smuzhiyun #define UDF_FLAG_USE_FILE_CTIME_EA 4
19*4882a593Smuzhiyun #define UDF_FLAG_STRICT 5
20*4882a593Smuzhiyun #define UDF_FLAG_UNDELETE 6
21*4882a593Smuzhiyun #define UDF_FLAG_UNHIDE 7
22*4882a593Smuzhiyun #define UDF_FLAG_VARCONV 8
23*4882a593Smuzhiyun #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
24*4882a593Smuzhiyun #define UDF_FLAG_GID_FORGET 12
25*4882a593Smuzhiyun #define UDF_FLAG_UID_SET 13
26*4882a593Smuzhiyun #define UDF_FLAG_GID_SET 14
27*4882a593Smuzhiyun #define UDF_FLAG_SESSION_SET 15
28*4882a593Smuzhiyun #define UDF_FLAG_LASTBLOCK_SET 16
29*4882a593Smuzhiyun #define UDF_FLAG_BLOCKSIZE_SET 17
30*4882a593Smuzhiyun #define UDF_FLAG_INCONSISTENT 18
31*4882a593Smuzhiyun #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible
32*4882a593Smuzhiyun * feature */
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
35*4882a593Smuzhiyun #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
36*4882a593Smuzhiyun #define UDF_PART_FLAG_READ_ONLY 0x0010
37*4882a593Smuzhiyun #define UDF_PART_FLAG_WRITE_ONCE 0x0020
38*4882a593Smuzhiyun #define UDF_PART_FLAG_REWRITABLE 0x0040
39*4882a593Smuzhiyun #define UDF_PART_FLAG_OVERWRITABLE 0x0080
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #define UDF_MAX_BLOCK_LOADED 8
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun #define UDF_TYPE1_MAP15 0x1511U
44*4882a593Smuzhiyun #define UDF_VIRTUAL_MAP15 0x1512U
45*4882a593Smuzhiyun #define UDF_VIRTUAL_MAP20 0x2012U
46*4882a593Smuzhiyun #define UDF_SPARABLE_MAP15 0x1522U
47*4882a593Smuzhiyun #define UDF_METADATA_MAP25 0x2511U
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun #define UDF_INVALID_MODE ((umode_t)-1)
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun #define MF_DUPLICATE_MD 0x01
52*4882a593Smuzhiyun #define MF_MIRROR_FE_LOADED 0x02
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun struct udf_meta_data {
55*4882a593Smuzhiyun __u32 s_meta_file_loc;
56*4882a593Smuzhiyun __u32 s_mirror_file_loc;
57*4882a593Smuzhiyun __u32 s_bitmap_file_loc;
58*4882a593Smuzhiyun __u32 s_alloc_unit_size;
59*4882a593Smuzhiyun __u16 s_align_unit_size;
60*4882a593Smuzhiyun /*
61*4882a593Smuzhiyun * Partition Reference Number of the associated physical / sparable
62*4882a593Smuzhiyun * partition
63*4882a593Smuzhiyun */
64*4882a593Smuzhiyun __u16 s_phys_partition_ref;
65*4882a593Smuzhiyun int s_flags;
66*4882a593Smuzhiyun struct inode *s_metadata_fe;
67*4882a593Smuzhiyun struct inode *s_mirror_fe;
68*4882a593Smuzhiyun struct inode *s_bitmap_fe;
69*4882a593Smuzhiyun };
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun struct udf_sparing_data {
72*4882a593Smuzhiyun __u16 s_packet_len;
73*4882a593Smuzhiyun struct buffer_head *s_spar_map[4];
74*4882a593Smuzhiyun };
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun struct udf_virtual_data {
77*4882a593Smuzhiyun __u32 s_num_entries;
78*4882a593Smuzhiyun __u16 s_start_offset;
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun struct udf_bitmap {
82*4882a593Smuzhiyun __u32 s_extPosition;
83*4882a593Smuzhiyun int s_nr_groups;
84*4882a593Smuzhiyun struct buffer_head *s_block_bitmap[];
85*4882a593Smuzhiyun };
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun struct udf_part_map {
88*4882a593Smuzhiyun union {
89*4882a593Smuzhiyun struct udf_bitmap *s_bitmap;
90*4882a593Smuzhiyun struct inode *s_table;
91*4882a593Smuzhiyun } s_uspace;
92*4882a593Smuzhiyun __u32 s_partition_root;
93*4882a593Smuzhiyun __u32 s_partition_len;
94*4882a593Smuzhiyun __u16 s_partition_type;
95*4882a593Smuzhiyun __u16 s_partition_num;
96*4882a593Smuzhiyun union {
97*4882a593Smuzhiyun struct udf_sparing_data s_sparing;
98*4882a593Smuzhiyun struct udf_virtual_data s_virtual;
99*4882a593Smuzhiyun struct udf_meta_data s_metadata;
100*4882a593Smuzhiyun } s_type_specific;
101*4882a593Smuzhiyun __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
102*4882a593Smuzhiyun __u16 s_volumeseqnum;
103*4882a593Smuzhiyun __u16 s_partition_flags;
104*4882a593Smuzhiyun };
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun #pragma pack()
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun struct udf_sb_info {
109*4882a593Smuzhiyun struct udf_part_map *s_partmaps;
110*4882a593Smuzhiyun __u8 s_volume_ident[32];
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun /* Overall info */
113*4882a593Smuzhiyun __u16 s_partitions;
114*4882a593Smuzhiyun __u16 s_partition;
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun /* Sector headers */
117*4882a593Smuzhiyun __s32 s_session;
118*4882a593Smuzhiyun __u32 s_anchor;
119*4882a593Smuzhiyun __u32 s_last_block;
120*4882a593Smuzhiyun
121*4882a593Smuzhiyun struct buffer_head *s_lvid_bh;
122*4882a593Smuzhiyun
123*4882a593Smuzhiyun /* Default permissions */
124*4882a593Smuzhiyun umode_t s_umask;
125*4882a593Smuzhiyun kgid_t s_gid;
126*4882a593Smuzhiyun kuid_t s_uid;
127*4882a593Smuzhiyun umode_t s_fmode;
128*4882a593Smuzhiyun umode_t s_dmode;
129*4882a593Smuzhiyun /* Lock protecting consistency of above permission settings */
130*4882a593Smuzhiyun rwlock_t s_cred_lock;
131*4882a593Smuzhiyun
132*4882a593Smuzhiyun /* Root Info */
133*4882a593Smuzhiyun struct timespec64 s_record_time;
134*4882a593Smuzhiyun
135*4882a593Smuzhiyun /* Fileset Info */
136*4882a593Smuzhiyun __u16 s_serial_number;
137*4882a593Smuzhiyun
138*4882a593Smuzhiyun /* highest UDF revision we have recorded to this media */
139*4882a593Smuzhiyun __u16 s_udfrev;
140*4882a593Smuzhiyun
141*4882a593Smuzhiyun /* Miscellaneous flags */
142*4882a593Smuzhiyun unsigned long s_flags;
143*4882a593Smuzhiyun
144*4882a593Smuzhiyun /* Encoding info */
145*4882a593Smuzhiyun struct nls_table *s_nls_map;
146*4882a593Smuzhiyun
147*4882a593Smuzhiyun /* VAT inode */
148*4882a593Smuzhiyun struct inode *s_vat_inode;
149*4882a593Smuzhiyun
150*4882a593Smuzhiyun struct mutex s_alloc_mutex;
151*4882a593Smuzhiyun /* Protected by s_alloc_mutex */
152*4882a593Smuzhiyun unsigned int s_lvid_dirty;
153*4882a593Smuzhiyun };
154*4882a593Smuzhiyun
UDF_SB(struct super_block * sb)155*4882a593Smuzhiyun static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
156*4882a593Smuzhiyun {
157*4882a593Smuzhiyun return sb->s_fs_info;
158*4882a593Smuzhiyun }
159*4882a593Smuzhiyun
160*4882a593Smuzhiyun struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
161*4882a593Smuzhiyun
162*4882a593Smuzhiyun int udf_compute_nr_groups(struct super_block *sb, u32 partition);
163*4882a593Smuzhiyun
UDF_QUERY_FLAG(struct super_block * sb,int flag)164*4882a593Smuzhiyun static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
165*4882a593Smuzhiyun {
166*4882a593Smuzhiyun return test_bit(flag, &UDF_SB(sb)->s_flags);
167*4882a593Smuzhiyun }
168*4882a593Smuzhiyun
UDF_SET_FLAG(struct super_block * sb,int flag)169*4882a593Smuzhiyun static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
170*4882a593Smuzhiyun {
171*4882a593Smuzhiyun set_bit(flag, &UDF_SB(sb)->s_flags);
172*4882a593Smuzhiyun }
173*4882a593Smuzhiyun
UDF_CLEAR_FLAG(struct super_block * sb,int flag)174*4882a593Smuzhiyun static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
175*4882a593Smuzhiyun {
176*4882a593Smuzhiyun clear_bit(flag, &UDF_SB(sb)->s_flags);
177*4882a593Smuzhiyun }
178*4882a593Smuzhiyun
179*4882a593Smuzhiyun #endif /* __LINUX_UDF_SB_H */
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