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