osobhandClaude Opus 5.5
1207df5189
libhdf5 decides what an object header is in a fixed order (H5O__obj_class_real): a group if it has a Symbol Table or Link Info message, a dataset if it has a Datatype *and* a Dataspace message, a named datatype if it has a Datatype message. The conformance probe called any header with a Data Layout message a dataset, so cve-2024-33874's /Dset1 (a datatype and a layout, no dataspace), which h5py opens as a named datatype, was reported as a dataset we failed to read (MissingMessage(Dataspace)). The probe now classifies with object_class(). Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
clawhdf5-format
Pure-Rust HDF5 binary format parsing and writing — no C dependencies.
Features
- Zero-copy superblock, object header, and B-tree parsing
- Chunked dataset read/write with filter pipelines
no_stdsupport (disablestdfeature)- Optional parallel reads via Rayon
- SHA-256 provenance tracking
Usage
use clawhdf5_format::Superblock;
let data = std::fs::read("data.h5").unwrap();
let sb = Superblock::from_bytes(&data).unwrap();
println!("HDF5 version {}.{}", sb.version_major(), sb.version_minor());
License
MIT