Daniel Samson
5725d35e5b
Add an AttachStatus enum to ps2-library.zig for AttachReply.status, distinguishing the three failure causes handleAttach previously collapsed into a bare -1: invalid_request (message too short), missing_endpoint (no capability passed), and no_such_device (no port identified the requested device type). The keyboard and mouse drivers check against AttachStatus.ok rather than a literal 0.