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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /fs/udf/udf_i.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fs/udf/udf_i.h')
-rw-r--r-- | fs/udf/udf_i.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h new file mode 100644 index 000000000..312b7c9ef --- /dev/null +++ b/fs/udf/udf_i.h @@ -0,0 +1,64 @@ +/* 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 i_hidden : 1; /* hidden system inode */ + unsigned reserved : 24; + __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) */ |