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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _UDF_I_H3#define _UDF_I_H4 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 information20 * of a regular files and symlinks. This includes all extents belonging to21 * the file/symlink, a fact whether data are in-inode or in external data22 * 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 of24 * i_data_sem). When extents are changed, i_data_sem must be held for writing25 * 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) */65