Process management

How Peios creates new processes — the clone primitive, what is inherited, and how identity, integrity, and protection follow a process from fork through exec.

How Peios extends the set of executable file formats — registry-defined handlers that match files by magic bytes or extension and route them to a chosen interpreter.

How threads share and isolate state on Peios — the security model implications of shared primary tokens, per-thread impersonation, and process-scoped security descriptors.

How processes terminate, how parents collect their exit status, what happens to children whose parent dies, and the handles that make waiting and signalling race-free.