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https://github.com/brain-hackers/u-boot-brain
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f06bfcf54d
open_ctree_fs_info() is the main entry point to open btrfs. This version is a simplfied version of __open_ctree_fd() of btrfs-progs, the main differences are: - Parameters on how to specify a block device Instead of @fd and @path, U-Boot uses blk_desc and disk_partition_t. - Remove open_ctree flags There won't be multiple open ctree modes in U-Boot. Otherwise functions structures are all kept the same. With open_ctree_fs_info() implemented, also introduce the global current_fs_info pointer to show the current opened btrfs. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz>
52 lines
2.0 KiB
C
52 lines
2.0 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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struct btrfs_root *btrfs_read_fs_root_no_cache(struct btrfs_fs_info *fs_info,
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struct btrfs_key *location);
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struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
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struct btrfs_key *location);
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void btrfs_setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info,
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u64 objectid);
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void btrfs_free_fs_info(struct btrfs_fs_info *fs_info);
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struct btrfs_fs_info *btrfs_new_fs_info(void);
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int btrfs_check_fs_compatibility(struct btrfs_super_block *sb);
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int btrfs_setup_all_roots(struct btrfs_fs_info *fs_info);
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void btrfs_release_all_roots(struct btrfs_fs_info *fs_info);
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void btrfs_cleanup_all_caches(struct btrfs_fs_info *fs_info);
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struct btrfs_fs_info *open_ctree_fs_info(struct blk_desc *desc,
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struct disk_partition *part);
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int close_ctree_fs_info(struct btrfs_fs_info *fs_info);
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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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