Raven Scott
d286ce19b5
test(protocol): add deterministic MBR failover-key coverage docs(protocol): align package-bare-os-protocol version to 0.9.1 test(booter): add MBR corruption and wrong-topic smoke fixtures test(peer-seed): add strict pre-MBR bare_os.capabilities negotiation check feat(seeder): validate BARE_OS_SEED_REQUIRE_MBR_LABELS feat(seeder): validate BARE_OS_SEED_CAPABILITY_ATTESTATION_JSON schema docs(boot-policy): add requireProtocolPackageMin 0.9.1 example test(kernel): cover boot.policy denySeedRpcMethods behavior test(protocol): add app/cap/chat/meshdrop channel compatibility fixture test(swarm-disk): cover duplicate Protomux channel null-return path test(protocol): add 11-word kernelCapabilityWords round-trip fixture docs(schema): add mbr-layout schema and validate seeder examples test(protocol): add topicKey() golden hash fixture docs(trust): document block-0 trust assumptions in boot docs feat(seeder): add discovery.flushed readiness logging feat(booter): record peer discovery timings in boot-perf.json feat(integration): add local testnet mode to integration lab smoke test(booter): add Hyperswarm connection-budget env regression coverage test(booter): add swarm plus Corestore suspend/resume integration coverage feat(booter): mirror swarm ban events into host audit logs feat(booter): add direct-peer boot via BARE_OS_BOOT_JOIN_PEER_HEX feat(seeder): pass BARE_OS_SEED_MAX_PEERS to Hyperswarm feat(seeder): log drive.version and discoveryKey at startup test(booter): add Hyperdrive.checkout read-only boot probe coverage feat(booter): prefetch /boot/init.js before kernel handoff feat(booter): add optional /bin warm replication via downloadDiff feat(seeder): add manifestPaths SHA-256 generation in stage-kernel-tree test(peer-seed): cover helper-served block-0 after seeder exit feat(protocol): add Protomux cork batching for initial channel sends test(boot-graph): compare kernel/init labels with booter graph proc docs(boot-policy): add v9-v11 schema examples feat(release): add requireInitJsSha256 fixture generation step test(vfs): add BARE_OS_VFS_SYSTEM_RO_ALIAS coverage test(vfs): strengthen system-drive write-deny path coverage feat(identity): add personal-drive namespace export/import docs and tests test(booter): add guest-to-login warm cache invalidation regression test(vfs): add guest deny coverage for /.bare sensitive paths test(coreutils): add cross-drive mv failure injection coverage test(vfs): add .bareos_empty round-trip coverage across mkdir/rmdir/cp/git-fs test(vfs): add /dev/shm quota enforcement coverage test(proc): add /proc/bare_os/index.json sortedness and schema checks test(vfs): add warm read cache invalidation on replication growth docs(ctx): document bareOsInvalidateWarmReadCaches(reason) test(kernel): add BARE_OS_BOOT_DRY_RUN behavior coverage docs(posix): add dashboard rows for all COREUTILS_COMMANDS feat(curl): expand -w variables beyond http_code/url_effective/size_download feat(wget): mark -N timestamping as explicit unsupported error feat(curl): plumb mutual TLS cert/key intent to ctx.httpFetch metadata feat(shuf): add deterministic seed mode via BARE_OS_SHUF_SEED docs(sort): document -M month-sort as unsupported feat(grep): add explicit -E and -G mode handling test(sed): add Open Group Issue 7 golden fixtures test(awk): add getline VFS regressions for missing/repeat/boundary cases test(shell): add non-interactive here-doc coverage test(shell): add trap delivery coverage for synthetic PIDs/job IDs test(shell): add set -e compound-body behavior coverage docs(shell): strengthen read builtin opt-in guidance test(env): add Bare-runtime coverage for -S and --env-file docs(man): add examples for pathcap-verify pkg-swarm-index corestorectl test(identity): add account/vault backup-restore smoke coverage feat(audit): add tamper detection verification for audit chain rows test(peer-admission): cover strict empty allowlist deny behavior test(peer-admission): add denylist precedence over allowlist coverage test(peer-admission): add BARE_OS_PEER_REQUIRE_CAPS_JSON metadata checks docs(identity): add trusted-key rotation example for path capabilities feat(schema): tighten extensionSignerPinsV2-V4 hash validation test(delegate): add allowlist negative cases for curl/wget/git/hrpc/systemctl test(proc): extend /proc/self/environ redaction key coverage docs(security): add peer-assisted block-0 mirroring threat-model notes feat(bench): add boot budget trend output from real booter phases test(baretop): align fixture coverage with /proc snapshot key set test(metrics): validate /proc/bare_os/metrics.prom OpenMetrics shape docs(ops): add structured seeder NDJSON examples test(replication): add live stall-hint coverage for no_peers/length_unavailable/ok docs(release): add corestore-snapshot workflow to checklist docs(ops): add mirror-drive experiment utility to maintainer workflow test(booter): add monitor progress coverage for replication live sketch feat(seeder): validate DHT bootstrap address class JSON inputs docs(network): add HYPERSWARM_BOOTSTRAP testnet operator guidance chore(root): add deterministic test:integration script docs(ci): add local CI runbook for no-.github environments docs(release): add npm run test:bare after npm test feat(verify): add protocol docs/package version parity checker feat(verify): enforce feature-roadmap canonical path consistency feat(lockfile-drift): add tier-1 strict fail option for mismatches docs(lockfile-drift): add udx-native and blind-peering upgrade workflow notes docs(cli-parity): add bare-fetch upstream issue tracking row feat(bundle-health): generate per-tier bundle size regression thresholds feat(doc-contracts): verify handbook references to current proc schema versions feat(pretest): add validate-mermaid-syntax gate feat(probe): add bare-runtime top-25 critical command lane docs(protocol): update capability-word prose from bits..bits5 to current words docs(two-drive): document /tmp /var/log and account-prefix routing docs(security): add concise boot trust model page and links docs(dev-guide): add P2P lab cookbook section docs(dev-guide): add how-to for adding seed RPCs docs(dev-guide): add how-to for adding /proc/bare_os nodes docs(dev-guide): add /bin utility checklist for man/posix/build/parity/tests docs(user-manual): add short What BareOS is not section
46 lines
3.0 KiB
Markdown
46 lines
3.0 KiB
Markdown
# Concept — Boot and init timeline
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This is the **happy-path** boot story at a glance. Wire formats and failure modes are in the handbook and protocol reference.
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**Text summary (for plain-text / `man` readers — same order as the diagram):** the **seeder** publishes canonical **MBR block 0** and drive blocks onto the **Hyperswarm** topic. The **booter** **discovers peers** and **replicates**, **parses the MBR** to obtain **system Hyperdrive** keys, **opens or creates** the **personal Hyperdrive**, **builds `ctx**`, runs **`/boot/init.js`** (`start(ctx)`), and guest code then uses **`ctx`** and the **VFS** for syscalls and file access. After boot, eligible peers can mirror that same block `0` plus captured seed RPC snapshots for later cold joiners.
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```mermaid
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sequenceDiagram
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participant Seeder as Seeder
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participant Helper as EligibleBootedPeer
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participant Topic as HyperswarmTopic
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participant Booter as Booter
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participant Sys as SystemHyperdrive
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participant Per as PersonalHyperdrive
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participant Init as boot_init_js
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Seeder->>Topic: publish canonical MBR and blocks
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Helper->>Topic: mirror block 0 and seed RPC snapshots
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Booter->>Topic: discover peers replicate
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Booter->>Sys: open using MBR key material
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Booter->>Per: open or create personal drive
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Booter->>Init: run start(ctx)
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Init->>Booter: guest syscalls via ctx and VFS
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```
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## Roles
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1. **Seeder** — stages `kernel/` into the system drive, writes the canonical **512-byte MBR**, stays online so others can replicate.
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2. **Booter** — joins the same swarm topic, opens **system + personal** drives, constructs **`ctx`**, executes **`/boot/init.js`**.
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3. **Eligible booted peer** — optionally mirrors the same block `0` and captured seed RPC snapshots for cold joiners.
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4. **Stock kernel (`/boot/init.js`)** — brings up initd/cron themes, shell, and guest-visible policy as documented in the kernel contract.
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## Block-0 trust assumptions
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- Booters trust the first valid block `0` they accept on the `bare-os-v1` topic as the system-drive key envelope.
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- Peer-assisted mirrors improve availability, but they do not add cryptographic authority beyond the same swarm trust boundary.
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- Operators should pair swarm trust with policy gates (`bare_os.capabilities`, boot policy minimums, allowlists, and release verification) when deciding which peers are allowed to satisfy block `0`.
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- A mismatched or malicious block `0` can redirect boot to a different drive; treat MBR provenance as part of your release trust model, not just a transport detail.
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## Read next
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- **Handbook** — [Chapter 3 — Protocol and disk](../../handbook/03-protocol-and-disk.md) (includes sequence diagram and MBR layout details).
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- **Handbook** — [Chapter 4 — Booter runtime](../../handbook/04-the-booter-runtime.md).
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- **Security** — [Boot trust model](../security/boot-trust-model.md).
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- **Reference** — [KERNEL_CONTRACT.md](../architecture/KERNEL_CONTRACT.md).
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- **P2P detail** — [P2P swarm and Protomux](p2p-swarm-and-protomux.md).
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