Module filesystem 

Reading a payload tree, and refusing one that is not a payload tree.

Everything here walks with symlink_metadata, never metadata. Following a link while deciding what an entry is would let a link to a directory be walked into as a directory, which is the exact confusion the link rules exist to remove.

Functions

collect_entries

Lists payload entries in the stable order hashing and archive creation use.

collect_files

Every path in a payload that resolves to content: regular files and the links to them.

payload_size

Logical size of a payload.

sha256_file

Lowercase hex SHA-256 of a file’s bytes, streamed rather than buffered.

validate_extracted_tree

Re-applies the payload rules to a tree that has just been written.