[Keda710]

Fixes #294.

What changed

• Continue walking child directories when a folder marker has its own object metadata.
• Skip recursion into non-directory entries when no object metadata is present.
• Add a regression test that writes folder/child.txt before folder/, then checks prefix and root listings, pagination, and reads.

Validation

• cargo test --offline --locked -p openlake_storage list_ (6 passed)
• cargo test --offline --locked -p openlake_io local_fs::tests:: (13 passed)
• cargo test --offline --locked -p openlake_server --bin openlaked (68 passed)
• cargo clippy --offline --locked --workspace --all-targets -- -D warnings
• cargo fmt --all -- --check
• git diff --check

[the-company-company]

🟠 1 medium-severity finding

_{Reviewed commit c3eed84.}

[the-company-company]

🟠 Medium · Recursive listing now walks every object's internal files and data dirs

descend = true for every object means each listed object's directory gets another list_dir. That listing holds the object's own storage files: xl.meta, xl.meta.bkp and the data dir(s), which contain part.N.

Each of those entries then goes through read_version:

• folder/xl.meta and folder/xl.meta.bkp try to open …/xl.meta/xl.meta, which fails with ENOTDIR and hits Err(_) => continue.
• A data dir returns FileNotFound. Because it passes the symlink_metadata is_dir check, the walk recurses into it and runs list_dir again, plus a failing read_version for each part.N.

The results are still correct. The cost is that a full-bucket listing now adds, per object, a blocking std::fs::read_dir and a failed metadata open. Objects that aren't inline add another stat, readdir and failed open for each part. This is on every disk in the set, and the listing path used to do none of this work.

Fix: when descending from an object directory, skip reserved entries before calling read_version, i.e. META_FILENAME, META_BACKUP_FILENAME and the record's data dir(s). One option is to pass the set of names to skip into the recursive call. Another is to only recurse into children whose own xl.meta exists or that are plain key-prefix directories.

[the-company-company]

✅ No issues found

_{Reviewed commit bc69887.}