3393e4d6ce
Create a new blkmap_crypt.c file to hold the LUKS code, since it is fairly large. Add an internal header for blkmap as well. Signed-off-by: Simon Glass <simon.glass@canonical.com>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2023 Addiva Elektronik
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* Author: Tobias Waldekranz <tobias@waldekranz.com>
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*
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* Internal blkmap structures and functions
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*/
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#ifndef _BLKMAP_INTERNAL_H
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#define _BLKMAP_INTERNAL_H
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#include <dm/lists.h>
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struct blkmap;
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/**
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* struct blkmap_slice - Region mapped to a blkmap
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*
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* Common data for a region mapped to a blkmap, specialized by each
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* map type.
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*
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* @node: List node used to associate this slice with a blkmap
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* @blknr: Start block number of the mapping
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* @blkcnt: Number of blocks covered by this mapping
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*/
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struct blkmap_slice {
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struct list_head node;
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lbaint_t blknr;
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lbaint_t blkcnt;
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/**
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* @read: - Read from slice
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*
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* @read.bm: Blkmap to which this slice belongs
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* @read.bms: This slice
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* @read.blknr: Start block number to read from
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* @read.blkcnt: Number of blocks to read
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* @read.buffer: Buffer to store read data to
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*/
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ulong (*read)(struct blkmap *bm, struct blkmap_slice *bms,
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lbaint_t blknr, lbaint_t blkcnt, void *buffer);
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/**
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* @write: - Write to slice
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*
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* @write.bm: Blkmap to which this slice belongs
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* @write.bms: This slice
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* @write.blknr: Start block number to write to
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* @write.blkcnt: Number of blocks to write
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* @write.buffer: Data to be written
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*/
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ulong (*write)(struct blkmap *bm, struct blkmap_slice *bms,
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lbaint_t blknr, lbaint_t blkcnt, const void *buffer);
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/**
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* @destroy: - Tear down slice
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*
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* @read.bm: Blkmap to which this slice belongs
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* @read.bms: This slice
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*/
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void (*destroy)(struct blkmap *bm, struct blkmap_slice *bms);
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};
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/**
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* blkmap_slice_add() - Add a slice to a blkmap
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*
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* @bm: Blkmap to add the slice to
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* @new: New slice to add
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* Returns: 0 on success, negative error code on failure
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*/
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int blkmap_slice_add(struct blkmap *bm, struct blkmap_slice *new);
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#endif /* _BLKMAP_INTERNAL_H */
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