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

 
 1#ifndef _UDF_I_H
 2#define _UDF_I_H
 3
 
 
 
 
 
 
 
 
 
 
 
 
 
 4/*
 5 * The i_data_sem and i_mutex serve for protection of allocation information
 6 * of a regular files and symlinks. This includes all extents belonging to
 7 * the file/symlink, a fact whether data are in-inode or in external data
 8 * blocks, preallocation, goal block information... When extents are read,
 9 * i_mutex or i_data_sem must be held (for reading is enough in case of
10 * i_data_sem). When extents are changed, i_data_sem must be held for writing
11 * and also i_mutex must be held.
12 *
13 * For directories i_mutex is used for all the necessary protection.
14 */
15
16struct udf_inode_info {
17	struct timespec		i_crtime;
18	/* Physical address of inode */
19	struct kernel_lb_addr		i_location;
20	__u64			i_unique;
21	__u32			i_lenEAttr;
22	__u32			i_lenAlloc;
23	__u64			i_lenExtents;
24	__u32			i_next_alloc_block;
25	__u32			i_next_alloc_goal;
 
 
26	unsigned		i_alloc_type : 3;
27	unsigned		i_efe : 1;	/* extendedFileEntry */
28	unsigned		i_use : 1;	/* unallocSpaceEntry */
29	unsigned		i_strat4096 : 1;
30	unsigned		reserved : 26;
31	union {
32		struct short_ad	*i_sad;
33		struct long_ad		*i_lad;
34		__u8		*i_data;
35	} i_ext;
36	struct rw_semaphore	i_data_sem;
 
 
 
37	struct inode vfs_inode;
38};
39
40static inline struct udf_inode_info *UDF_I(struct inode *inode)
41{
42	return list_entry(inode, struct udf_inode_info, vfs_inode);
43}
44
45#endif /* _UDF_I_H) */