forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.8 KiB
63 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef _UDF_I_H |
|
#define _UDF_I_H |
|
|
|
struct extent_position { |
|
struct buffer_head *bh; |
|
uint32_t offset; |
|
struct kernel_lb_addr block; |
|
}; |
|
|
|
struct udf_ext_cache { |
|
/* Extent position */ |
|
struct extent_position epos; |
|
/* Start logical offset in bytes */ |
|
loff_t lstart; |
|
}; |
|
|
|
/* |
|
* The i_data_sem and i_mutex serve for protection of allocation information |
|
* of a regular files and symlinks. This includes all extents belonging to |
|
* the file/symlink, a fact whether data are in-inode or in external data |
|
* blocks, preallocation, goal block information... When extents are read, |
|
* i_mutex or i_data_sem must be held (for reading is enough in case of |
|
* i_data_sem). When extents are changed, i_data_sem must be held for writing |
|
* and also i_mutex must be held. |
|
* |
|
* For directories i_mutex is used for all the necessary protection. |
|
*/ |
|
|
|
struct udf_inode_info { |
|
struct timespec64 i_crtime; |
|
/* Physical address of inode */ |
|
struct kernel_lb_addr i_location; |
|
__u64 i_unique; |
|
__u32 i_lenEAttr; |
|
__u32 i_lenAlloc; |
|
__u64 i_lenExtents; |
|
__u32 i_next_alloc_block; |
|
__u32 i_next_alloc_goal; |
|
__u32 i_checkpoint; |
|
__u32 i_extraPerms; |
|
unsigned i_alloc_type : 3; |
|
unsigned i_efe : 1; /* extendedFileEntry */ |
|
unsigned i_use : 1; /* unallocSpaceEntry */ |
|
unsigned i_strat4096 : 1; |
|
unsigned i_streamdir : 1; |
|
unsigned reserved : 25; |
|
__u8 *i_data; |
|
struct kernel_lb_addr i_locStreamdir; |
|
__u64 i_lenStreams; |
|
struct rw_semaphore i_data_sem; |
|
struct udf_ext_cache cached_extent; |
|
/* Spinlock for protecting extent cache */ |
|
spinlock_t i_extent_cache_lock; |
|
struct inode vfs_inode; |
|
}; |
|
|
|
static inline struct udf_inode_info *UDF_I(struct inode *inode) |
|
{ |
|
return container_of(inode, struct udf_inode_info, vfs_inode); |
|
} |
|
|
|
#endif /* _UDF_I_H) */
|
|
|