| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * BTRFS filesystem implementation for U-Boot |
| * |
| * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz |
| */ |
| |
| #ifndef __BTRFS_BTRFS_H__ |
| #define __BTRFS_BTRFS_H__ |
| |
| #include <linux/rbtree.h> |
| #include "conv-funcs.h" |
| |
| struct btrfs_info { |
| struct btrfs_super_block sb; |
| |
| struct btrfs_root tree_root; |
| struct btrfs_root fs_root; |
| struct btrfs_root chunk_root; |
| |
| struct rb_root chunks_root; |
| }; |
| |
| extern struct btrfs_info btrfs_info; |
| |
| /* hash.c */ |
| void btrfs_hash_init(void); |
| u32 btrfs_crc32c(u32, const void *, size_t); |
| u32 btrfs_csum_data(char *, u32, size_t); |
| void btrfs_csum_final(u32, void *); |
| |
| static inline u64 btrfs_name_hash(const char *name, int len) |
| { |
| return btrfs_crc32c((u32) ~1, name, len); |
| } |
| |
| /* dev.c */ |
| extern struct blk_desc *btrfs_blk_desc; |
| extern disk_partition_t *btrfs_part_info; |
| |
| int btrfs_devread(u64, int, void *); |
| |
| /* chunk-map.c */ |
| u64 btrfs_map_logical_to_physical(u64); |
| int btrfs_chunk_map_init(void); |
| void btrfs_chunk_map_exit(void); |
| int btrfs_read_chunk_tree(void); |
| |
| /* compression.c */ |
| u32 btrfs_decompress(u8 type, const char *, u32, char *, u32); |
| |
| /* super.c */ |
| int btrfs_read_superblock(void); |
| |
| /* dir-item.c */ |
| typedef int (*btrfs_readdir_callback_t)(const struct btrfs_root *, |
| struct btrfs_dir_item *); |
| |
| int btrfs_lookup_dir_item(const struct btrfs_root *, u64, const char *, int, |
| struct btrfs_dir_item *); |
| int btrfs_readdir(const struct btrfs_root *, u64, btrfs_readdir_callback_t); |
| |
| /* root.c */ |
| int btrfs_find_root(u64, struct btrfs_root *, struct btrfs_root_item *); |
| u64 btrfs_lookup_root_ref(u64, struct btrfs_root_ref *, char *); |
| |
| /* inode.c */ |
| u64 btrfs_lookup_inode_ref(struct btrfs_root *, u64, struct btrfs_inode_ref *, |
| char *); |
| int btrfs_lookup_inode(const struct btrfs_root *, struct btrfs_key *, |
| struct btrfs_inode_item *, struct btrfs_root *); |
| int btrfs_readlink(const struct btrfs_root *, u64, char *); |
| u64 btrfs_lookup_path(struct btrfs_root *, u64, const char *, u8 *, |
| struct btrfs_inode_item *, int); |
| u64 btrfs_file_read(const struct btrfs_root *, u64, u64, u64, char *); |
| |
| /* subvolume.c */ |
| u64 btrfs_get_default_subvol_objectid(void); |
| |
| /* extent-io.c */ |
| u64 btrfs_read_extent_inline(struct btrfs_path *, |
| struct btrfs_file_extent_item *, u64, u64, |
| char *); |
| u64 btrfs_read_extent_reg(struct btrfs_path *, struct btrfs_file_extent_item *, |
| u64, u64, char *); |
| |
| #endif /* !__BTRFS_BTRFS_H__ */ |