Module reader 

Block device reader with logical-to-physical address resolution

Provides BlockReader which reads btrfs tree blocks by logical address, resolving them through the chunk tree cache. Also provides filesystem_open which bootstraps a complete BlockReader from a raw block device or image.

Structs

BlockReader

A block reader that resolves logical addresses through a chunk cache.

OpenFilesystem

Result of opening a btrfs filesystem from a block device or image.

TreeStats

Statistics collected by walking all blocks of a single B-tree.

Enums

Traversal

Tree traversal order.

Functions

block_visit

Read a single block and call visitor (and optionally walk children with follow).

filesystem_open

Open a btrfs filesystem by bootstrapping from the superblock.

filesystem_open_mirror

Open a btrfs filesystem using a specific superblock mirror (0, 1, or 2).

filesystem_open_multi

Open a multi-device btrfs filesystem from a map of devid -> handle.

filesystem_open_with_cache

Open a btrfs filesystem using a pre-built chunk cache.

read_chunk_tree

Recursively read the chunk tree to populate the chunk cache.

read_root_tree

Read the root tree to collect all tree root pointers.

tree_stats_collect

Walk root_logical collecting TreeStats.

tree_walk

Walk a tree starting at root_logical, calling visitor for each block.

tree_walk_mut

Walk a tree (DFS), allowing the visitor to modify each block in place.

tree_walk_tolerant

Walk a tree, continuing past individual block read errors.