Module file

Structs§

DecodedBlobMetadata: Metadata decoded from on-disk storage describing a blob’s uncompressed size, compression info, and Merkle leaves. Compression info will be None if blob is uncompressed.
File: A mapped file containing extents and an optional transformation (compression or encryption).
Files: A thread-safe registry of active File instances indexed by their Zircon pager port key.
NoopDeliveryHandler: A no-op DeliveryHandler for sessions that do not run a kernel pager or verify blobs (such as intermediate partition mapping sessions).
PagerThread: An RAII guard for the background pager thread spawned by Files::spawn_pager_thread.

Transform: Transformation applied to stored data before it can be presented to the reader.

DEFAULT_VERIFICATION_ALIGNMENT: Default Merkle verification alignment (32 KiB) for uncompressed blobs, matching standard compressed blob chunk sizes.
TARGET_READ_AHEAD_SIZE: Target readahead size (128 KiB), matching Fxfs.

DeliveryHandler: Trait for handling deliveries (page request buffers and blob registrations) from Files.

process_mapping_command: Processes a raw mapping command (RawMappingCommand), decoding extent descriptors, reading blob metadata from storage, registering Merkle leaves via files, and inserting/removing the file from files.
read_blob_metadata: Reads blob metadata asynchronously from metadata_extents using service. Once the metadata is retrieved, deserialized, and parsed, callback is invoked with DecodedBlobMetadata.