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192.168.1.100 / T800 / a9a9c63d6216da5fe76a648b0f990f7c74e4e59c / . / src / kernel / linux / v4.19 / fs / udf / udf_sb.h
blob: d12e507e9eb2a8fb1faeb97bea5623c497c913dc [file] [log] [blame]
xjb04a4022021-11-25 15:01:52 +0800[diff] [blame]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
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[0];
91};
92
93struct udf_part_map {
94 union {
95 struct udf_bitmap *s_bitmap;
96 struct inode *s_table;
97 } s_uspace;
98 union {
99 struct udf_bitmap *s_bitmap;
100 struct inode *s_table;
101 } s_fspace;
102 __u32 s_partition_root;
103 __u32 s_partition_len;
104 __u16 s_partition_type;
105 __u16 s_partition_num;
106 union {
107 struct udf_sparing_data s_sparing;
108 struct udf_virtual_data s_virtual;
109 struct udf_meta_data s_metadata;
110 } s_type_specific;
111 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
112 __u16 s_volumeseqnum;
113 __u16 s_partition_flags;
114};
115
116#pragma pack()
117
118struct udf_sb_info {
119 struct udf_part_map *s_partmaps;
120 __u8 s_volume_ident[32];
121
122 /* Overall info */
123 __u16 s_partitions;
124 __u16 s_partition;
125
126 /* Sector headers */
127 __s32 s_session;
128 __u32 s_anchor;
129 __u32 s_last_block;
130
131 struct buffer_head *s_lvid_bh;
132
133 /* Default permissions */
134 umode_t s_umask;
135 kgid_t s_gid;
136 kuid_t s_uid;
137 umode_t s_fmode;
138 umode_t s_dmode;
139 /* Lock protecting consistency of above permission settings */
140 rwlock_t s_cred_lock;
141
142 /* Root Info */
143 struct timespec64 s_record_time;
144
145 /* Fileset Info */
146 __u16 s_serial_number;
147
148 /* highest UDF revision we have recorded to this media */
149 __u16 s_udfrev;
150
151 /* Miscellaneous flags */
152 unsigned long s_flags;
153
154 /* Encoding info */
155 struct nls_table *s_nls_map;
156
157 /* VAT inode */
158 struct inode *s_vat_inode;
159
160 struct mutex s_alloc_mutex;
161 /* Protected by s_alloc_mutex */
162 unsigned int s_lvid_dirty;
163};
164
165static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
166{
167 return sb->s_fs_info;
168}
169
170struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
171
172int udf_compute_nr_groups(struct super_block *sb, u32 partition);
173
174static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
175{
176 return test_bit(flag, &UDF_SB(sb)->s_flags);
177}
178
179static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
180{
181 set_bit(flag, &UDF_SB(sb)->s_flags);
182}
183
184static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
185{
186 clear_bit(flag, &UDF_SB(sb)->s_flags);
187}
188
189#endif /* __LINUX_UDF_SB_H */