1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _UDF_I_H 2 #ifndef _UDF_I_H
3 #define _UDF_I_H 3 #define _UDF_I_H
4 4
5 struct extent_position { 5 struct extent_position {
6 struct buffer_head *bh; 6 struct buffer_head *bh;
7 uint32_t offset; 7 uint32_t offset;
8 struct kernel_lb_addr block; 8 struct kernel_lb_addr block;
9 }; 9 };
10 10
11 struct udf_ext_cache { 11 struct udf_ext_cache {
12 /* Extent position */ 12 /* Extent position */
13 struct extent_position epos; 13 struct extent_position epos;
14 /* Start logical offset in bytes */ 14 /* Start logical offset in bytes */
15 loff_t lstart; 15 loff_t lstart;
16 }; 16 };
17 17
18 /* 18 /*
19 * The i_data_sem and i_mutex serve for protec 19 * The i_data_sem and i_mutex serve for protection of allocation information
20 * of a regular files and symlinks. This inclu 20 * of a regular files and symlinks. This includes all extents belonging to
21 * the file/symlink, a fact whether data are i 21 * the file/symlink, a fact whether data are in-inode or in external data
22 * blocks, preallocation, goal block informati 22 * blocks, preallocation, goal block information... When extents are read,
23 * i_mutex or i_data_sem must be held (for rea 23 * i_mutex or i_data_sem must be held (for reading is enough in case of
24 * i_data_sem). When extents are changed, i_da 24 * i_data_sem). When extents are changed, i_data_sem must be held for writing
25 * and also i_mutex must be held. 25 * and also i_mutex must be held.
26 * 26 *
27 * For directories i_mutex is used for all the 27 * For directories i_mutex is used for all the necessary protection.
28 */ 28 */
29 29
30 struct udf_inode_info { 30 struct udf_inode_info {
31 struct timespec64 i_crtime; 31 struct timespec64 i_crtime;
32 /* Physical address of inode */ 32 /* Physical address of inode */
33 struct kernel_lb_addr i_loca 33 struct kernel_lb_addr i_location;
34 __u64 i_unique; 34 __u64 i_unique;
35 __u32 i_lenEAttr; 35 __u32 i_lenEAttr;
36 __u32 i_lenAlloc; 36 __u32 i_lenAlloc;
37 __u64 i_lenExtents; 37 __u64 i_lenExtents;
38 __u32 i_next_alloc_b 38 __u32 i_next_alloc_block;
39 __u32 i_next_alloc_g 39 __u32 i_next_alloc_goal;
40 __u32 i_checkpoint; 40 __u32 i_checkpoint;
41 __u32 i_extraPerms; 41 __u32 i_extraPerms;
42 unsigned i_alloc_type : 42 unsigned i_alloc_type : 3;
43 unsigned i_efe : 1; 43 unsigned i_efe : 1; /* extendedFileEntry */
44 unsigned i_use : 1; 44 unsigned i_use : 1; /* unallocSpaceEntry */
45 unsigned i_strat4096 : 45 unsigned i_strat4096 : 1;
46 unsigned i_streamdir : 46 unsigned i_streamdir : 1;
47 unsigned i_hidden : 1; !! 47 unsigned reserved : 25;
48 unsigned reserved : 24; !! 48 union {
49 __u8 *i_data; !! 49 struct short_ad *i_sad;
>> 50 struct long_ad *i_lad;
>> 51 __u8 *i_data;
>> 52 } i_ext;
50 struct kernel_lb_addr i_locStreamdir 53 struct kernel_lb_addr i_locStreamdir;
51 __u64 i_lenStreams; 54 __u64 i_lenStreams;
52 struct rw_semaphore i_data_sem; 55 struct rw_semaphore i_data_sem;
53 struct udf_ext_cache cached_extent; 56 struct udf_ext_cache cached_extent;
54 /* Spinlock for protecting extent cach 57 /* Spinlock for protecting extent cache */
55 spinlock_t i_extent_cache_lock; 58 spinlock_t i_extent_cache_lock;
56 struct inode vfs_inode; 59 struct inode vfs_inode;
57 }; 60 };
58 61
59 static inline struct udf_inode_info *UDF_I(str 62 static inline struct udf_inode_info *UDF_I(struct inode *inode)
60 { 63 {
61 return container_of(inode, struct udf_ 64 return container_of(inode, struct udf_inode_info, vfs_inode);
62 } 65 }
63 66
64 #endif /* _UDF_I_H) */ 67 #endif /* _UDF_I_H) */
65 68
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