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https://github.com/brain-hackers/u-boot-brain
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75b0817bab
This is the one of the basic stone function for btrfs, which: - Resolves the chunk mappings - Reads data from disk - Does various sanity check With read_tree_block(), we can finally crossport needed btrfs btree operations to U-Boot. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz>
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#ifndef __BTRFS_DISK_IO_H__
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#define __BTRFS_DISK_IO_H__
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#include <linux/sizes.h>
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#include <fs_internal.h>
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#include "ctree.h"
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#include "disk-io.h"
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#define BTRFS_SUPER_INFO_OFFSET SZ_64K
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#define BTRFS_SUPER_INFO_SIZE SZ_4K
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/* U-boot specific */
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int btrfs_read_superblock(void);
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/* From btrfs-progs */
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int read_whole_eb(struct btrfs_fs_info *info, struct extent_buffer *eb, int mirror);
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struct extent_buffer* read_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
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u64 parent_transid);
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struct extent_buffer* btrfs_find_create_tree_block(
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struct btrfs_fs_info *fs_info, u64 bytenr);
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struct extent_buffer *btrfs_find_tree_block(struct btrfs_fs_info *fs_info,
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u64 bytenr, u32 blocksize);
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int btrfs_read_dev_super(struct blk_desc *desc, struct disk_partition *part,
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struct btrfs_super_block *sb);
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int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid);
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int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
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int btrfs_csum_data(u16 csum_type, const u8 *data, u8 *out, size_t len);
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int csum_tree_block_size(struct extent_buffer *buf, u16 csum_sectorsize,
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int verify, u16 csum_type);
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#endif
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