Module fs 

Filesystem primitives the lifecycle services share.

Hashing, guarded destination checks, and parent-creating writes — the mechanics only. Which destinations exist and what to do about a refusal is the installer’s and upgrader’s business.

Enums

DestinationRefusal

Why a destination cannot be touched.

Functions

check_destination

Check that touching destination under target stays inside the target.

remove_within

Remove a repository-relative file under a target, refusing a path that leaves it.

sha256_file

Hash a file’s bytes.

write_atomic

Write a file through a sibling temporary file and a rename, creating its parent directories.

write_file

Write a file, creating its parent directories.

write_within

Write a repository-relative destination under a target, refusing a path that leaves it.