Operating systems, infrastructure, emulation, and technical history.
How kqueue registrations, filters, receipts, one-shot and edge-like behavior, descriptor lifetime, signals, timers, and process events actually work.
How FreeBSD's TrustedBSD MAC framework composes policy modules, labels and access checks, plus a safe path for selecting, testing, and auditing policy.
A practical model of netgraph nodes, hooks, control messages, data paths, ngctl inspection, socket integration, and safe teardown on FreeBSD.
How UFS Soft Updates, SU+J, fsck, and GEOM journaling differ, including crash guarantees, stable-write semantics, inspection, and safe changes.
A recovery-oriented ZFS replication workflow covering recursive snapshots, incremental ancestry, receive safety, resumable streams, holds, and audits.
An engineering guide to BMessage fields, flattening, messengers, reply semantics, validation, compatibility, and safe interprocess communication on Haiku.
A recovery-first method for Haiku launch_daemon loops: preserve first-failure evidence, inspect the roster and graph, isolate overrides, and verify readiness.
A current, non-destructive Haiku UEFI recovery path covering firmware mode, GPT and ESP checks, Installer's EFI-loader tool, and boot verification.
A robust Haiku translator design covering format identification, bounded parsing, streaming conversion, metadata, roster discovery, and hostile-file tests.
A safe Haiku Replicant design covering archiving, instantiation, BDragger integration, messages, resource ownership, and testing outside its host app.