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Ernesto A. Fernández
72e6425af6
Copy the code of the APFS module into its own repository, without the rest of the kernel tree. Development will continue upstream, but the intention is to make life easier for potential users. To get the module to build independently, rewrite the Makefile and add a definition for the APFS_SUPER_MAGIC macro. Since the intention is to support a range of kernel versions, use preprocessor checks to handle kernels without statx, without iversion, and without SB_RDONLY. Provide a README file based on the upstream documentation, but with additional build and mount instructions. Add a LICENSE file as well. Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
46 lines
964 B
C
46 lines
964 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* linux/fs/apfs/extents.h
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*
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* Copyright (C) 2018 Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
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*/
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#ifndef _EXTENTS_H
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#define _EXTENTS_H
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#include <linux/types.h>
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struct inode;
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struct buffer_head;
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struct apfs_query;
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/* File extent records */
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#define APFS_FILE_EXTENT_LEN_MASK 0x00ffffffffffffffULL
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#define APFS_FILE_EXTENT_FLAG_MASK 0xff00000000000000ULL
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#define APFS_FILE_EXTENT_FLAG_SHIFT 56
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/*
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* Structure of a file extent record
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*/
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struct apfs_file_extent_val {
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__le64 len_and_flags;
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__le64 phys_block_num;
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__le64 crypto_id;
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} __packed;
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/*
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* Extent record data in memory
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*/
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struct apfs_file_extent {
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u64 logical_addr;
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u64 phys_block_num;
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u64 len;
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};
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extern int apfs_extent_from_query(struct apfs_query *query,
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struct apfs_file_extent *extent);
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extern int apfs_get_block(struct inode *inode, sector_t iblock,
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struct buffer_head *bh_result, int create);
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#endif /* _EXTENTS_H */
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