Add the lock-owned transactional Domain Store

Cargo.lock

@@ -168,6 +168,9 @@ name = "lazaret-host-coordinator"
 version = "0.0.0"
 dependencies = [
  "lazaret-core",
+ "lazaret-linux",
+ "redb",
+ "serde",
 ]
 
 [[package]]

crates/lazaret-core/src/identity.rs

@@ -206,32 +206,6 @@ impl PidfsProcessIdentityV1 {
     }
 }
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
-pub struct LegacyUnverifiedProcessIdentityV1 {
-    host_pid: HostPidLocator,
-    start_time_ticks: ProcessStartTimeTicks,
-}
-
-impl LegacyUnverifiedProcessIdentityV1 {
-    #[must_use]
-    pub const fn new(host_pid: HostPidLocator, start_time_ticks: ProcessStartTimeTicks) -> Self {
-        Self {
-            host_pid,
-            start_time_ticks,
-        }
-    }
-
-    #[must_use]
-    pub const fn host_pid(&self) -> HostPidLocator {
-        self.host_pid
-    }
-
-    #[must_use]
-    pub const fn start_time_ticks(&self) -> ProcessStartTimeTicks {
-        self.start_time_ticks
-    }
-}
-
 #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct NamespaceIdentity {
     pub device: DeviceId,
@@ -252,10 +226,10 @@ mod tests {
 
     use super::{
         BootId, ContainerId, CoordinatorId, DeviceId, DomainId, GenerationId, GuestProcessId,
-        GuestProcessStartTimeTicks, HostPidLocator, LegacyUnverifiedProcessIdentityV1,
+        GuestProcessStartTimeTicks, HostPidLocator, MountIdentity, NamespaceIdentity,
-        MountIdentity, NamespaceIdentity, NetworkSidecarId, PidfsDeviceId, PidfsInodeId,
+        NetworkSidecarId, PidfsDeviceId, PidfsInodeId, PidfsProcessAuthorityV1,
-        PidfsProcessAuthorityV1, PidfsProcessIdentityV1, PreparedArtifactId, ProcessStartTimeTicks,
+        PidfsProcessIdentityV1, PreparedArtifactId, ProcessStartTimeTicks, RequestId, SandboxId,
-        RequestId, SandboxId, SessionId,
+        SessionId,
     };
 
     #[test]
@@ -273,7 +247,6 @@ mod tests {
             TypeId::of::<BootId>(),
             TypeId::of::<PidfsProcessAuthorityV1>(),
             TypeId::of::<PidfsProcessIdentityV1>(),
-            TypeId::of::<LegacyUnverifiedProcessIdentityV1>(),
             TypeId::of::<HostPidLocator>(),
             TypeId::of::<ProcessStartTimeTicks>(),
             TypeId::of::<GuestProcessId>(),

crates/lazaret-core/src/records.rs

@@ -8,11 +8,10 @@ use crate::identity::{
     BundleDigest, CapabilityId, CertificateDigest, ClientId, ConfigurationFingerprint, ContainerId,
     CoordinatorId, DerivedPolicyDigest, DeviceId, DomainId, FileDescriptor, GenerationId,
     GuestProcessGroupId, GuestProcessId, GuestProcessStartTimeTicks, HostPath, IdMapDigest,
-    InodeId, LegacyUnverifiedProcessIdentityV1, MountIdentity, NamespaceIdentity, NetworkSidecarId,
+    InodeId, MountIdentity, NamespaceIdentity, NetworkSidecarId, PidfsProcessAuthorityV1,
-    PidfsProcessAuthorityV1, PidfsProcessIdentityV1, PolicyId, PrepareOperationId,
+    PidfsProcessIdentityV1, PolicyId, PrepareOperationId, PreparedArtifactId, ProtocolCredentialId,
-    PreparedArtifactId, ProtocolCredentialId, ReadinessFingerprint, RequestDigest, RequestId,
+    ReadinessFingerprint, RequestDigest, RequestId, SandboxId, SelectedManifestDigest,
-    SandboxId, SelectedManifestDigest, SessionAnchorId, SessionId, SourceIdentity, StreamDigest,
+    SessionAnchorId, SessionId, SourceIdentity, StreamDigest, TrustManifestDigest,
-    TrustManifestDigest,
 };
 
 mod configuration;

crates/lazaret-core/src/records/configuration.rs

@@ -1,10 +1,8 @@
 use super::{BTreeMap, Deserialize, HostPath, Serialize};
 
-pub const DOMAIN_STORE_SCHEMA_ID: &str = "lazaret-domain-store-v2";
+pub const DOMAIN_STORE_SCHEMA_ID: &str = "lazaret-domain-store-v1";
-pub const LEGACY_DOMAIN_STORE_SCHEMA_ID: &str = "lazaret-domain-store-v1";
 pub const STORAGE_CATALOG_SCHEMA_ID: &str = "lazaret-storage-catalog-v1";
-pub const DOMAIN_STORE_SCHEMA_VERSION: u32 = 2;
+pub const DOMAIN_STORE_SCHEMA_VERSION: u32 = 1;
-pub const LEGACY_DOMAIN_STORE_SCHEMA_VERSION: u32 = 1;
 pub const STORAGE_CATALOG_SCHEMA_VERSION: u32 = 1;
 pub const TRUSTED_HOST_CONFIGURATION_SCHEMA_ID: &str = "lazaret-trusted-host-config-v1";
 

crates/lazaret-core/src/records/lifecycle.rs

@@ -2,11 +2,10 @@ use super::{
     BundleDigest, ClientId, ConfigurationFingerprint, ContainerId, CoordinatorId,
     DOMAIN_STORE_SCHEMA_ID, DOMAIN_STORE_SCHEMA_VERSION, DerivedPolicyDigest, Deserialize,
     DeviceId, DomainId, FileDescriptor, GenerationId, GuestProcessGroupId, GuestProcessId,
-    GuestProcessStartTimeTicks, HostPath, InodeId, LEGACY_DOMAIN_STORE_SCHEMA_ID,
+    GuestProcessStartTimeTicks, HostPath, InodeId, MountIdentity, NamespaceIdentity,
-    LEGACY_DOMAIN_STORE_SCHEMA_VERSION, LegacyUnverifiedProcessIdentityV1, MountIdentity,
+    NetworkReadinessEvidence, NetworkSidecarId, PidfsProcessIdentityV1, PreparedArtifactId,
-    NamespaceIdentity, NetworkReadinessEvidence, NetworkSidecarId, PidfsProcessIdentityV1,
+    ReadinessFingerprint, RecordInvariantError, RecordTransitionError, RequestId,
-    PreparedArtifactId, ReadinessFingerprint, RecordInvariantError, RecordTransitionError,
+    STORAGE_CATALOG_SCHEMA_ID, STORAGE_CATALOG_SCHEMA_VERSION, SandboxId, Serialize,
-    RequestId, STORAGE_CATALOG_SCHEMA_ID, STORAGE_CATALOG_SCHEMA_VERSION, SandboxId, Serialize,
     SessionAnchorId, SessionId, SourceIdentity, fmt,
 };
 
@@ -18,21 +17,13 @@ pub struct StoreMetadata {
 
 impl StoreMetadata {
     #[must_use]
-    pub fn domain_store_v2() -> Self {
+    pub fn domain_store_v1() -> Self {
         Self {
             schema_id: DOMAIN_STORE_SCHEMA_ID.into(),
             schema_version: DOMAIN_STORE_SCHEMA_VERSION,
         }
     }
 
-    #[must_use]
-    pub fn legacy_domain_store_v1() -> Self {
-        Self {
-            schema_id: LEGACY_DOMAIN_STORE_SCHEMA_ID.into(),
-            schema_version: LEGACY_DOMAIN_STORE_SCHEMA_VERSION,
-        }
-    }
-
     #[must_use]
     pub fn storage_catalog_v1() -> Self {
         Self {
@@ -56,11 +47,6 @@ impl StoreMetadata {
             && self.schema_version == DOMAIN_STORE_SCHEMA_VERSION
     }
 
-    fn is_legacy_domain_store(&self) -> bool {
-        self.schema_id == LEGACY_DOMAIN_STORE_SCHEMA_ID
-            && self.schema_version == LEGACY_DOMAIN_STORE_SCHEMA_VERSION
-    }
-
     fn is_storage_catalog(&self) -> bool {
         self.schema_id == STORAGE_CATALOG_SCHEMA_ID
             && self.schema_version == STORAGE_CATALOG_SCHEMA_VERSION
@@ -83,10 +69,7 @@ impl<'de> Deserialize<'de> for StoreMetadata {
             schema_id: fields.schema_id,
             schema_version: fields.schema_version,
         };
-        if metadata.is_domain_store()
+        if metadata.is_domain_store() || metadata.is_storage_catalog() {
-            || metadata.is_legacy_domain_store()
-            || metadata.is_storage_catalog()
-        {
             Ok(metadata)
         } else {
             Err(serde::de::Error::custom(
@@ -100,24 +83,9 @@ impl<'de> Deserialize<'de> for StoreMetadata {
 pub struct DomainStoreMetadata(StoreMetadata);
 
 impl DomainStoreMetadata {
-    #[must_use]
-    pub fn v2() -> Self {
-        Self(StoreMetadata::domain_store_v2())
-    }
-
-    #[must_use]
-    pub const fn as_metadata(&self) -> &StoreMetadata {
-        &self.0
-    }
-}
-
-#[derive(Clone, Debug, Eq, PartialEq, Serialize)]
-pub struct LegacyDomainStoreMetadata(StoreMetadata);
-
-impl LegacyDomainStoreMetadata {
     #[must_use]
     pub fn v1() -> Self {
-        Self(StoreMetadata::legacy_domain_store_v1())
+        Self(StoreMetadata::domain_store_v1())
     }
 
     #[must_use]
@@ -126,22 +94,6 @@ impl LegacyDomainStoreMetadata {
     }
 }
 
-impl<'de> Deserialize<'de> for LegacyDomainStoreMetadata {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: serde::Deserializer<'de>,
-    {
-        let metadata = StoreMetadata::deserialize(deserializer)?;
-        if metadata.is_legacy_domain_store() {
-            Ok(Self(metadata))
-        } else {
-            Err(serde::de::Error::custom(
-                "expected legacy Domain Store v1 metadata",
-            ))
-        }
-    }
-}
-
 impl<'de> Deserialize<'de> for DomainStoreMetadata {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
     where
@@ -235,42 +187,17 @@ pub enum ParticipantState {
 }
 
 #[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
-pub enum HostProcessIdentity {
+pub struct HostProcessIdentity(PidfsProcessIdentityV1);
-    PidfsV1(PidfsProcessIdentityV1),
-    LegacyUnverifiedV1(LegacyUnverifiedProcessIdentityV1),
-}
-
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
-pub struct LegacyProcessIdentityRefusal;
-
-impl fmt::Display for LegacyProcessIdentityRefusal {
-    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
-        formatter.write_str("legacy PID/start-only process identity has no positive authority")
-    }
-}
-
-impl std::error::Error for LegacyProcessIdentityRefusal {}
 
 impl HostProcessIdentity {
     #[must_use]
     pub const fn pidfs_v1(identity: PidfsProcessIdentityV1) -> Self {
-        Self::PidfsV1(identity)
+        Self(identity)
     }
 
     #[must_use]
-    pub const fn legacy_unverified_v1(identity: LegacyUnverifiedProcessIdentityV1) -> Self {
+    pub const fn pidfs(&self) -> &PidfsProcessIdentityV1 {
-        Self::LegacyUnverifiedV1(identity)
+        &self.0
-    }
-
-    /// # Errors
-    /// Legacy PID/start-only data has no positive authority.
-    pub const fn verified_pidfs(
-        &self,
-    ) -> Result<&PidfsProcessIdentityV1, LegacyProcessIdentityRefusal> {
-        match self {
-            Self::PidfsV1(identity) => Ok(identity),
-            Self::LegacyUnverifiedV1(_) => Err(LegacyProcessIdentityRefusal),
-        }
     }
 }
 
@@ -297,11 +224,6 @@ impl PersistedHostProcessOwnership {
         Self::Committed(HostProcessIdentity::pidfs_v1(identity))
     }
 
-    #[must_use]
-    pub const fn legacy_unverified(identity: LegacyUnverifiedProcessIdentityV1) -> Self {
-        Self::Committed(HostProcessIdentity::legacy_unverified_v1(identity))
-    }
-
     #[must_use]
     pub const fn is_staged(&self) -> bool {
         matches!(self, Self::Staged(_))
@@ -314,7 +236,7 @@ impl PersistedHostProcessOwnership {
 
     #[must_use]
     pub const fn is_current_committed(&self) -> bool {
-        matches!(self, Self::Committed(HostProcessIdentity::PidfsV1(_)))
+        matches!(self, Self::Committed(_))
     }
 
     const fn is_initial_acquisition(&self) -> bool {
@@ -326,29 +248,22 @@ impl PersistedHostProcessOwnership {
     }
 
     /// # Errors
-    /// Unassigned or legacy-unverified ownership has no positive authority.
+    /// Unassigned ownership has no positive authority.
     pub fn authoritative_pidfs(&self) -> Result<&PidfsProcessIdentityV1, ProcessAuthorityRefusal> {
         match self {
             Self::Unassigned => Err(ProcessAuthorityRefusal::Unassigned),
-            Self::Staged(identity) | Self::Committed(HostProcessIdentity::PidfsV1(identity)) => {
+            Self::Staged(identity) => Ok(identity),
-                Ok(identity)
+            Self::Committed(identity) => Ok(identity.pidfs()),
-            }
-            Self::Committed(HostProcessIdentity::LegacyUnverifiedV1(_)) => {
-                Err(ProcessAuthorityRefusal::LegacyUnverified)
-            }
         }
     }
 
     /// # Errors
-    /// Unassigned, staged, or legacy-unverified ownership is not serviceable.
+    /// Unassigned or staged ownership is not serviceable.
     pub fn serviceable_pidfs(&self) -> Result<&PidfsProcessIdentityV1, ProcessOwnershipRefusal> {
         match self {
             Self::Unassigned => Err(ProcessOwnershipRefusal::Unassigned),
             Self::Staged(_) => Err(ProcessOwnershipRefusal::Staged),
-            Self::Committed(HostProcessIdentity::PidfsV1(identity)) => Ok(identity),
+            Self::Committed(identity) => Ok(identity.pidfs()),
-            Self::Committed(HostProcessIdentity::LegacyUnverifiedV1(_)) => {
-                Err(ProcessOwnershipRefusal::LegacyUnverified)
-            }
         }
     }
 }
@@ -357,7 +272,6 @@ impl PersistedHostProcessOwnership {
 pub enum ProcessOwnershipRefusal {
     Unassigned,
     Staged,
-    LegacyUnverified,
 }
 
 impl fmt::Display for ProcessOwnershipRefusal {
@@ -365,8 +279,6 @@ impl fmt::Display for ProcessOwnershipRefusal {
         match self {
             Self::Unassigned => formatter.write_str("process ownership is unassigned"),
             Self::Staged => formatter.write_str("process ownership is staged, not committed"),
-            Self::LegacyUnverified => formatter
-                .write_str("legacy PID/start-only process ownership has no positive authority"),
         }
     }
 }
@@ -376,15 +288,12 @@ impl std::error::Error for ProcessOwnershipRefusal {}
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum ProcessAuthorityRefusal {
     Unassigned,
-    LegacyUnverified,
 }
 
 impl fmt::Display for ProcessAuthorityRefusal {
     fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             Self::Unassigned => formatter.write_str("process ownership is unassigned"),
-            Self::LegacyUnverified => formatter
-                .write_str("legacy PID/start-only process ownership has no positive authority"),
         }
     }
 }
@@ -1507,8 +1416,8 @@ fn validate_process_progress(
         ) if old == next => Ok(()),
         (
             PersistedHostProcessOwnership::Staged(old),
-            PersistedHostProcessOwnership::Committed(HostProcessIdentity::PidfsV1(next)),
+            PersistedHostProcessOwnership::Committed(next),
-        ) if old == next => Ok(()),
+        ) if old == next.pidfs() => Ok(()),
         (
             PersistedHostProcessOwnership::Committed(old),
             PersistedHostProcessOwnership::Committed(next),
@@ -1525,7 +1434,7 @@ fn validate_existing_process_progress(
         (old, next),
         (
             PersistedHostProcessOwnership::Unassigned,
-            PersistedHostProcessOwnership::Committed(HostProcessIdentity::PidfsV1(_))
+            PersistedHostProcessOwnership::Committed(_)
         )
     ) {
         Ok(())

crates/lazaret-core/src/records/registry.rs

@@ -4,20 +4,20 @@ use super::{
     DerivedNetworkPolicy, DeveloperDecision, DeveloperDecisionKind, DnsObservation, Domain,
     DomainStore, EnvironmentReference, EscalationOutcome, Generation, GenerationIdentity,
     GitRoutingOwnership, GuestProcessIdentity, HelperOwnership, HostProcessIdentity,
-    HostProcessOwnershipSlot, LegacyUnverifiedProcessIdentityV1, Mailbox, MailboxCancellation,
+    HostProcessOwnershipSlot, Mailbox, MailboxCancellation, MailboxRequest, MailboxResult,
-    MailboxRequest, MailboxResult, MailboxResultAck, MailboxResultChunk, MountIdentity,
+    MailboxResultAck, MailboxResultChunk, MountIdentity, NamespaceIdentity, NetworkObservation,
-    NamespaceIdentity, NetworkObservation, NetworkOwnership, NetworkReachabilityProbe,
+    NetworkOwnership, NetworkReachabilityProbe, NetworkReadinessAttestation,
-    NetworkReadinessAttestation, NetworkReadinessEvidence, NetworkReadinessIdentity, Participant,
+    NetworkReadinessEvidence, NetworkReadinessIdentity, Participant, ParticipantOwnership,
-    ParticipantOwnership, ParticipantState, PermittedDestinationObservation,
+    ParticipantState, PermittedDestinationObservation, PersistedHostProcessOwnership,
-    PersistedHostProcessOwnership, PidfsProcessAuthorityV1, PidfsProcessIdentityV1, PolicyAction,
+    PidfsProcessAuthorityV1, PidfsProcessIdentityV1, PolicyAction, PolicyDelivery, PrefixRule,
-    PolicyDelivery, PrefixRule, PrepareOperation, PreparedArtifact, PreparedLowerOwnership,
+    PrepareOperation, PreparedArtifact, PreparedLowerOwnership, ProcessOwnershipCommitAck,
-    ProcessOwnershipCommitAck, ProcessOwnershipMessageVersion, ProtocolCredential,
+    ProcessOwnershipMessageVersion, ProtocolCredential, ProtocolCredentialRole,
-    ProtocolCredentialRole, ProtocolPublicationIdentity, PtyIdentity, PublicationOwnership,
+    ProtocolPublicationIdentity, PtyIdentity, PublicationOwnership, ResolvedAutoApprovalRule,
-    ResolvedAutoApprovalRule, ResolvedVolume, Resolver, ResultStream, SandboxCredentialBundle,
+    ResolvedVolume, Resolver, ResultStream, SandboxCredentialBundle, SandboxOwnership, Session,
-    SandboxOwnership, Session, SessionBinding, SessionClose, SessionExit, SessionExitOutcome,
+    SessionBinding, SessionClose, SessionExit, SessionExitOutcome, SessionRequestCapability,
-    SessionRequestCapability, SessionTerminal, SessionTerminalEvent, SessionTerminalMessage,
+    SessionTerminal, SessionTerminalEvent, SessionTerminalMessage, SessionTerminalState,
-    SessionTerminalState, SignedProtocolRecord, StagedProcessOwnership, StateAnchorOwnership,
+    SignedProtocolRecord, StagedProcessOwnership, StateAnchorOwnership, StorageCatalog,
-    StorageCatalog, StoreMetadata, TerminalInput, TerminalOutput, TerminalResize, TerminalSignal,
+    StoreMetadata, TerminalInput, TerminalOutput, TerminalResize, TerminalSignal,
     TerminalSignalKind, TlsCredential, TlsRole, TrustManifest, TrustedHostConfigurationV1,
 };
 
@@ -55,7 +55,6 @@ schema_types!(
     "PtyIdentity" => PtyIdentity,
     "PidfsProcessAuthorityV1" => PidfsProcessAuthorityV1,
     "PidfsProcessIdentityV1" => PidfsProcessIdentityV1,
-    "LegacyUnverifiedProcessIdentityV1" => LegacyUnverifiedProcessIdentityV1,
     "HostProcessIdentity" => HostProcessIdentity,
     "PersistedHostProcessOwnership" => PersistedHostProcessOwnership,
     "HostProcessOwnershipSlot" => HostProcessOwnershipSlot,

crates/lazaret-core/tests/schema_records.rs

@@ -8,12 +8,11 @@ use lazaret_core::identity::{
     BootId, BundleDigest, CapabilityId, CertificateDigest, ClientId, ConfigurationFingerprint,
     ContainerId, CoordinatorId, DerivedPolicyDigest, DeviceId, DomainId, FileDescriptor,
     GenerationId, GuestProcessGroupId, GuestProcessId, GuestProcessStartTimeTicks, HostPath,
-    HostPidLocator, IdMapDigest, InodeId, LegacyUnverifiedProcessIdentityV1, MountId,
+    HostPidLocator, IdMapDigest, InodeId, MountId, MountIdentity, NamespaceIdentity,
-    MountIdentity, NamespaceIdentity, NetworkSidecarId, PidfsDeviceId, PidfsInodeId,
+    NetworkSidecarId, PidfsDeviceId, PidfsInodeId, PidfsProcessAuthorityV1, PidfsProcessIdentityV1,
-    PidfsProcessAuthorityV1, PidfsProcessIdentityV1, PolicyId, PrepareOperationId,
+    PolicyId, PrepareOperationId, PreparedArtifactId, ProcessStartTimeTicks, ProtocolCredentialId,
-    PreparedArtifactId, ProcessStartTimeTicks, ProtocolCredentialId, ReadinessFingerprint,
+    ReadinessFingerprint, RequestDigest, RequestId, SandboxId, SelectedManifestDigest,
-    RequestDigest, RequestId, SandboxId, SelectedManifestDigest, SessionAnchorId, SessionId,
+    SessionAnchorId, SessionId, SourceIdentity, StreamDigest, TrustManifestDigest,
-    SourceIdentity, StreamDigest, TrustManifestDigest,
 };
 use lazaret_core::records::*;
 use serde::de::DeserializeOwned;

crates/lazaret-core/tests/schema_records/documents.rs

@@ -40,22 +40,8 @@ fn store_identity_and_versions_dispatch_before_rows() {
         decode::<DomainStoreMetadata>(&encode(&StoreMetadata::storage_catalog_v1()).unwrap()),
         Err(CodecError::MalformedPayload(_))
     ));
-    for domain_metadata in [
-        StoreMetadata::domain_store_v2(),
-        StoreMetadata::legacy_domain_store_v1(),
-    ] {
     assert!(matches!(
-            decode::<StorageCatalogMetadata>(&encode(&domain_metadata).unwrap()),
+        decode::<StorageCatalogMetadata>(&encode(&StoreMetadata::domain_store_v1()).unwrap()),
-            Err(CodecError::MalformedPayload(_))
-        ));
-    }
-    let legacy = StoreMetadata::legacy_domain_store_v1();
-    assert_eq!(
-        decode::<LegacyDomainStoreMetadata>(&encode(&legacy).unwrap()).unwrap(),
-        LegacyDomainStoreMetadata::v1()
-    );
-    assert!(matches!(
-        decode::<DomainStoreMetadata>(&encode(&legacy).unwrap()),
         Err(CodecError::MalformedPayload(_))
     ));
 
@@ -79,7 +65,7 @@ fn store_identity_and_versions_dispatch_before_rows() {
     ));
 
     let wrong_catalog = postcard::to_stdvec(&RawStorageCatalog {
-        metadata: StoreMetadata::domain_store_v2(),
+        metadata: StoreMetadata::domain_store_v1(),
         prepared_artifacts: vec![],
         artifact_leases: vec![],
         prepare_operations: vec![],

crates/lazaret-core/tests/schema_records/encoding.rs

@@ -57,7 +57,7 @@ fn every_schema_shape_round_trips_and_rejects_malformed_or_unknown_versions() {
         outbox_path: HostPath::new(b"outbox".to_vec()),
         state: ParticipantState::Committed,
     };
-    let metadata = StoreMetadata::domain_store_v2();
+    let metadata = StoreMetadata::domain_store_v1();
     let tls_credential = TlsCredential::session_coordinator(
         generation_identity(),
         coordinator_id(),
@@ -110,13 +110,6 @@ fn every_schema_shape_round_trips_and_rejects_malformed_or_unknown_versions() {
     );
     verify_shape(pidfs_identity.authority(), &mut seen);
     verify_shape(pidfs_identity, &mut seen);
-    verify_shape(
-        LegacyUnverifiedProcessIdentityV1::new(
-            HostPidLocator::new(48),
-            ProcessStartTimeTicks::new(480),
-        ),
-        &mut seen,
-    );
     verify_shape(HostProcessIdentity::pidfs_v1(pidfs_identity), &mut seen);
     verify_shape(
         PersistedHostProcessOwnership::staged(pidfs_identity),
@@ -442,7 +435,7 @@ fn every_schema_shape_round_trips_and_rejects_malformed_or_unknown_versions() {
     );
     verify_shape(
         DomainStore {
-            metadata: DomainStoreMetadata::v2(),
+            metadata: DomainStoreMetadata::v1(),
             domain,
             generations: vec![generation],
             participants: vec![participant],
@@ -729,7 +722,7 @@ fn trailing_and_nonminimal_postcard_encodings_are_rejected() {
         Err(CodecError::NonMinimalPayload)
     ));
 
-    let mut overlong_store_id = encode(&StoreMetadata::domain_store_v2()).unwrap();
+    let mut overlong_store_id = encode(&StoreMetadata::domain_store_v1()).unwrap();
     overlong_store_id[0] |= 0x80;
     overlong_store_id.insert(1, 0);
     assert!(matches!(

crates/lazaret-core/tests/schema_records/participant_transitions.rs

@@ -136,21 +136,6 @@ fn newly_recorded_existing_processes_do_not_bypass_child_staging() {
             Ok(()),
             "{edge:?}"
         );
-
-        let legacy = participant_edge_snapshot(
-            edge,
-            PersistedHostProcessOwnership::legacy_unverified(
-                LegacyUnverifiedProcessIdentityV1::new(
-                    current.host_pid(),
-                    current.start_time_ticks(),
-                ),
-            ),
-        );
-        assert_eq!(
-            unassigned.validate_transition_to(&legacy),
-            Err(RecordTransitionError::ProcessStageSkipped),
-            "{edge:?}"
-        );
     }
 
     let acquired_edges = [
@@ -212,21 +197,6 @@ fn newly_recorded_existing_processes_do_not_bypass_child_staging() {
         terminal_unassigned.validate_transition_to(&terminal_existing_hc),
         Ok(())
     );
-    let terminal_legacy_hc = terminal_snapshot(
-        SessionTerminalState::Intent,
-        PersistedHostProcessOwnership::legacy_unverified(LegacyUnverifiedProcessIdentityV1::new(
-            HostPidLocator::new(101),
-            ProcessStartTimeTicks::new(1_010),
-        )),
-        PersistedHostProcessOwnership::unassigned(),
-        false,
-    )
-    .unwrap();
-    assert_eq!(
-        terminal_unassigned.validate_transition_to(&terminal_legacy_hc),
-        Err(RecordTransitionError::ProcessStageSkipped)
-    );
-
     let terminal_exec_staged = terminal_snapshot(
         SessionTerminalState::Intent,
         owned_process(101),

crates/lazaret-core/tests/schema_records/process_evidence.rs

@@ -77,22 +77,7 @@ fn process_slot_separates_cleanup_authority_from_serviceability() {
         Err(ProcessAuthorityRefusal::Unassigned)
     );
 
-    let legacy = LegacyUnverifiedProcessIdentityV1::new(
+    assert_eq!(HostProcessIdentity::pidfs_v1(current).pidfs(), &current);
-        HostPidLocator::new(91),
-        ProcessStartTimeTicks::new(910),
-    );
-    assert_eq!(
-        HostProcessIdentity::legacy_unverified_v1(legacy).verified_pidfs(),
-        Err(LegacyProcessIdentityRefusal)
-    );
-    assert_eq!(
-        PersistedHostProcessOwnership::legacy_unverified(legacy).serviceable_pidfs(),
-        Err(ProcessOwnershipRefusal::LegacyUnverified)
-    );
-    assert_eq!(
-        PersistedHostProcessOwnership::legacy_unverified(legacy).authoritative_pidfs(),
-        Err(ProcessAuthorityRefusal::LegacyUnverified)
-    );
 
     let staged_anchor = ParticipantOwnership::StateAnchor(state_anchor_ownership(
         PersistedHostProcessOwnership::staged(current),
@@ -267,14 +252,9 @@ fn participant_snapshot_matrix_is_phase_complete_and_strictly_decoded() {
 #[test]
 fn active_process_owners_require_complete_current_pidfs_evidence() {
     let current = process(94);
-    let legacy = LegacyUnverifiedProcessIdentityV1::new(
-        HostPidLocator::new(94),
-        ProcessStartTimeTicks::new(940),
-    );
     let invalid_slots = [
         PersistedHostProcessOwnership::unassigned(),
         PersistedHostProcessOwnership::staged(current),
-        PersistedHostProcessOwnership::legacy_unverified(legacy),
     ];
     for daemon in invalid_slots {
         assert_eq!(

crates/lazaret-core/tests/schema_records/terminal.rs

@@ -5,10 +5,6 @@ use super::*;
 fn session_terminal_snapshot_and_transition_matrix_is_fail_closed() {
     let current_hc = process(101);
     let current_exec = process(102);
-    let legacy = LegacyUnverifiedProcessIdentityV1::new(
-        HostPidLocator::new(102),
-        ProcessStartTimeTicks::new(1_020),
-    );
     let bare = terminal_snapshot(
         SessionTerminalState::Intent,
         PersistedHostProcessOwnership::unassigned(),
@@ -19,7 +15,6 @@ fn session_terminal_snapshot_and_transition_matrix_is_fail_closed() {
     for invalid in [
         PersistedHostProcessOwnership::unassigned(),
         PersistedHostProcessOwnership::staged(current_exec),
-        PersistedHostProcessOwnership::legacy_unverified(legacy),
     ] {
         assert_eq!(
             terminal_snapshot(

crates/lazaret-host-coordinator/Cargo.toml

@@ -11,6 +11,11 @@ path = "src/main.rs"
 
 [dependencies]
 lazaret-core = { version = "=0.0.0", path = "../lazaret-core" }
+lazaret-linux = { version = "=0.0.0", path = "../lazaret-linux" }
+redb.workspace = true
+
+[dev-dependencies]
+serde.workspace = true
 
 [lints]
 workspace = true

crates/lazaret-host-coordinator/src/domain_store.rs

@@ -0,0 +1,740 @@
+use std::fmt;
+use std::io;
+use std::path::Path;
+
+use lazaret_core::codec::{CodecError, decode, encode};
+use lazaret_core::identity::{GenerationId, SessionId};
+use lazaret_core::records::{
+    Domain, DomainStore, DomainStoreMetadata, DurableDecision, Generation, Mailbox, Participant,
+    ParticipantRole, ParticipantState, RecordTransitionError, Session, SessionPhase,
+    SessionTerminal, SessionTerminalState,
+};
+use lazaret_linux::filesystem::ExclusiveFileLock;
+use redb::{
+    CommitError, Database, DatabaseError, ReadableDatabase, ReadableTable, StorageError,
+    TableDefinition, TableError, TransactionError,
+};
+
+const METADATA: TableDefinition<u8, &[u8]> = TableDefinition::new("metadata");
+const DOMAINS: TableDefinition<u8, &[u8]> = TableDefinition::new("domains");
+const GENERATIONS: TableDefinition<u64, &[u8]> = TableDefinition::new("generations");
+const PARTICIPANTS: TableDefinition<&[u8; 9], &[u8]> = TableDefinition::new("participants");
+const SESSIONS: TableDefinition<&[u8; 40], &[u8]> = TableDefinition::new("sessions");
+const SESSION_TERMINALS: TableDefinition<&[u8; 40], &[u8]> =
+    TableDefinition::new("session_terminals");
+const MAILBOXES: TableDefinition<u64, &[u8]> = TableDefinition::new("mailboxes");
+const SINGLETON_KEY: u8 = 0;
+
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum DomainStoreMutation {
+    PutGeneration(Generation),
+    PutParticipant(Participant),
+    CleanParticipantAfterAbsence(Participant),
+    PutSession(Session),
+    PutMailbox(Mailbox),
+    CleanMailboxAfterAbsence(Mailbox),
+    PutSessionTerminal(SessionTerminal),
+    CleanSessionTerminalAfterAbsence(SessionTerminal),
+}
+
+#[derive(Debug)]
+pub enum DomainStoreError {
+    Io(io::Error),
+    Database(DatabaseError),
+    Transaction(TransactionError),
+    Table(TableError),
+    Storage(StorageError),
+    Commit(CommitError),
+    Codec(CodecError),
+    Transition(RecordTransitionError),
+    MissingMetadata,
+    MissingRow(&'static str),
+    DuplicateRow(&'static str),
+    InvalidRow(&'static str),
+    DomainMismatch,
+    GenerationMismatch,
+}
+
+impl fmt::Display for DomainStoreError {
+    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::Io(error) => write!(formatter, "Domain Store I/O failed: {error}"),
+            Self::Database(error) => write!(formatter, "Domain Store open failed: {error}"),
+            Self::Transaction(error) => {
+                write!(formatter, "Domain Store transaction failed: {error}")
+            }
+            Self::Table(error) => write!(formatter, "Domain Store table failed: {error}"),
+            Self::Storage(error) => write!(formatter, "Domain Store storage failed: {error}"),
+            Self::Commit(error) => write!(formatter, "Domain Store commit failed: {error}"),
+            Self::Codec(error) => {
+                write!(formatter, "Domain Store record failed validation: {error}")
+            }
+            Self::Transition(error) => {
+                write!(formatter, "Domain Store transition refused: {error}")
+            }
+            Self::MissingMetadata => formatter.write_str("Domain Store metadata is missing"),
+            Self::MissingRow(kind) => write!(formatter, "referenced {kind} row is missing"),
+            Self::DuplicateRow(kind) => write!(formatter, "duplicate {kind} row"),
+            Self::InvalidRow(kind) => write!(formatter, "invalid {kind} row"),
+            Self::DomainMismatch => formatter.write_str("Domain Store Domain identity mismatch"),
+            Self::GenerationMismatch => formatter.write_str("Domain Store generation mismatch"),
+        }
+    }
+}
+
+impl std::error::Error for DomainStoreError {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        match self {
+            Self::Io(error) => Some(error),
+            Self::Database(error) => Some(error),
+            Self::Transaction(error) => Some(error),
+            Self::Table(error) => Some(error),
+            Self::Storage(error) => Some(error),
+            Self::Commit(error) => Some(error),
+            Self::Codec(error) => Some(error),
+            Self::Transition(error) => Some(error),
+            Self::MissingMetadata
+            | Self::MissingRow(_)
+            | Self::DuplicateRow(_)
+            | Self::InvalidRow(_)
+            | Self::DomainMismatch
+            | Self::GenerationMismatch => None,
+        }
+    }
+}
+
+macro_rules! from_error {
+    ($source:ty, $variant:ident) => {
+        impl From<$source> for DomainStoreError {
+            fn from(error: $source) -> Self {
+                Self::$variant(error)
+            }
+        }
+    };
+}
+
+from_error!(io::Error, Io);
+from_error!(DatabaseError, Database);
+from_error!(TransactionError, Transaction);
+from_error!(TableError, Table);
+from_error!(StorageError, Storage);
+from_error!(CommitError, Commit);
+from_error!(CodecError, Codec);
+from_error!(RecordTransitionError, Transition);
+
+pub struct HostCoordinatorDomainStore {
+    database: Database,
+    _domain_lock: ExclusiveFileLock,
+}
+
+impl HostCoordinatorDomainStore {
+    /// Opens the Domain Store while retaining the caller's exclusive Domain lock.
+    ///
+    /// # Errors
+    ///
+    /// Refuses I/O, database, metadata, row, or Domain identity failures.
+    pub fn open(
+        domain_lock: ExclusiveFileLock,
+        database_path: &Path,
+        expected_domain: &Domain,
+    ) -> Result<Self, DomainStoreError> {
+        let is_new = !database_path.try_exists()?;
+        let database = if is_new {
+            Database::create(database_path)?
+        } else {
+            Database::open(database_path)?
+        };
+        let store = Self {
+            database,
+            _domain_lock: domain_lock,
+        };
+        if is_new {
+            store.initialize(expected_domain)?;
+        } else {
+            store.validate_metadata()?;
+            if store.snapshot()?.domain != *expected_domain {
+                return Err(DomainStoreError::DomainMismatch);
+            }
+        }
+        Ok(store)
+    }
+
+    /// Reads and validates every typed row as one consistent redb snapshot.
+    ///
+    /// # Errors
+    ///
+    /// Refuses database, table, codec, key, duplicate, or relationship failures.
+    pub fn snapshot(&self) -> Result<DomainStore, DomainStoreError> {
+        self.validate_metadata()?;
+        let read = self.database.begin_read()?;
+        let domain = {
+            let table = read.open_table(DOMAINS)?;
+            let value = table
+                .get(SINGLETON_KEY)?
+                .ok_or(DomainStoreError::MissingRow("Domain"))?;
+            decode(value.value())?
+        };
+        let generations = read_generations(&read.open_table(GENERATIONS)?)?;
+        let participants = read_participants(&read.open_table(PARTICIPANTS)?)?;
+        let sessions = read_sessions(&read.open_table(SESSIONS)?)?;
+        let session_terminals = read_session_terminals(&read.open_table(SESSION_TERMINALS)?)?;
+        let mailboxes = read_mailboxes(&read.open_table(MAILBOXES)?)?;
+        let snapshot = DomainStore {
+            metadata: DomainStoreMetadata::v1(),
+            domain,
+            generations,
+            participants,
+            sessions,
+            session_terminals,
+            mailboxes,
+        };
+        validate_snapshot(&snapshot)?;
+        Ok(snapshot)
+    }
+
+    /// Applies the complete mutation batch in one immediate-durability redb transaction.
+    ///
+    /// # Errors
+    ///
+    /// Refuses invalid transitions, generation mismatches, malformed relationships, or storage
+    /// failures without committing any member of the batch.
+    pub fn apply(&self, mutations: &[DomainStoreMutation]) -> Result<(), DomainStoreError> {
+        if mutations.is_empty() {
+            return Ok(());
+        }
+        let mut snapshot = self.snapshot()?;
+        for mutation in mutations {
+            apply_mutation(&mut snapshot, mutation)?;
+        }
+        validate_snapshot(&snapshot)?;
+        self.write_snapshot(&snapshot)
+    }
+
+    fn initialize(&self, domain: &Domain) -> Result<(), DomainStoreError> {
+        let snapshot = DomainStore {
+            metadata: DomainStoreMetadata::v1(),
+            domain: domain.clone(),
+            generations: Vec::new(),
+            participants: Vec::new(),
+            sessions: Vec::new(),
+            session_terminals: Vec::new(),
+            mailboxes: Vec::new(),
+        };
+        self.write_snapshot(&snapshot)
+    }
+
+    fn validate_metadata(&self) -> Result<(), DomainStoreError> {
+        let read = self.database.begin_read()?;
+        let table = read.open_table(METADATA).map_err(|error| match error {
+            TableError::TableDoesNotExist(_) => DomainStoreError::MissingMetadata,
+            other => DomainStoreError::Table(other),
+        })?;
+        let value = table
+            .get(SINGLETON_KEY)?
+            .ok_or(DomainStoreError::MissingMetadata)?;
+        let _: DomainStoreMetadata = decode(value.value())?;
+        Ok(())
+    }
+
+    fn write_snapshot(&self, snapshot: &DomainStore) -> Result<(), DomainStoreError> {
+        let write = self.database.begin_write()?;
+        {
+            let mut table = write.open_table(METADATA)?;
+            let encoded = encode(&snapshot.metadata)?;
+            table.insert(SINGLETON_KEY, encoded.as_slice())?;
+        }
+        {
+            let mut table = write.open_table(DOMAINS)?;
+            let encoded = encode(&snapshot.domain)?;
+            table.insert(SINGLETON_KEY, encoded.as_slice())?;
+        }
+        {
+            let mut table = write.open_table(GENERATIONS)?;
+            for record in &snapshot.generations {
+                let encoded = encode(record)?;
+                table.insert(record.generation_id.get(), encoded.as_slice())?;
+            }
+        }
+        {
+            let mut table = write.open_table(PARTICIPANTS)?;
+            for record in &snapshot.participants {
+                let encoded = encode(record)?;
+                table.insert(&participant_key(record), encoded.as_slice())?;
+            }
+        }
+        {
+            let mut table = write.open_table(SESSIONS)?;
+            for record in &snapshot.sessions {
+                let encoded = encode(record)?;
+                table.insert(
+                    &session_key(record.generation_id, record.session_id),
+                    encoded.as_slice(),
+                )?;
+            }
+        }
+        {
+            let mut table = write.open_table(SESSION_TERMINALS)?;
+            for record in &snapshot.session_terminals {
+                let encoded = encode(record)?;
+                table.insert(
+                    &session_key(record.generation_id(), record.session_id()),
+                    encoded.as_slice(),
+                )?;
+            }
+        }
+        {
+            let mut table = write.open_table(MAILBOXES)?;
+            for record in &snapshot.mailboxes {
+                let encoded = encode(record)?;
+                table.insert(record.generation_id.get(), encoded.as_slice())?;
+            }
+        }
+        write.commit()?;
+        Ok(())
+    }
+}
+
+fn read_generations(
+    table: &redb::ReadOnlyTable<u64, &[u8]>,
+) -> Result<Vec<Generation>, DomainStoreError> {
+    let mut records = Vec::new();
+    for entry in table.iter()? {
+        let (key, value) = entry?;
+        let record: Generation = decode(value.value())?;
+        if key.value() != record.generation_id.get() {
+            return Err(DomainStoreError::InvalidRow("Generation key"));
+        }
+        records.push(record);
+    }
+    Ok(records)
+}
+
+fn read_participants(
+    table: &redb::ReadOnlyTable<&[u8; 9], &[u8]>,
+) -> Result<Vec<Participant>, DomainStoreError> {
+    let mut records = Vec::new();
+    for entry in table.iter()? {
+        let (key, value) = entry?;
+        let record: Participant = decode(value.value())?;
+        if key.value() != &participant_key(&record) {
+            return Err(DomainStoreError::InvalidRow("Participant key"));
+        }
+        records.push(record);
+    }
+    Ok(records)
+}
+
+fn read_sessions(
+    table: &redb::ReadOnlyTable<&[u8; 40], &[u8]>,
+) -> Result<Vec<Session>, DomainStoreError> {
+    let mut records = Vec::new();
+    for entry in table.iter()? {
+        let (key, value) = entry?;
+        let record: Session = decode(value.value())?;
+        if key.value() != &session_key(record.generation_id, record.session_id) {
+            return Err(DomainStoreError::InvalidRow("Session key"));
+        }
+        records.push(record);
+    }
+    Ok(records)
+}
+
+fn read_session_terminals(
+    table: &redb::ReadOnlyTable<&[u8; 40], &[u8]>,
+) -> Result<Vec<SessionTerminal>, DomainStoreError> {
+    let mut records = Vec::new();
+    for entry in table.iter()? {
+        let (key, value) = entry?;
+        let record: SessionTerminal = decode(value.value())?;
+        if key.value() != &session_key(record.generation_id(), record.session_id()) {
+            return Err(DomainStoreError::InvalidRow("Session Terminal key"));
+        }
+        records.push(record);
+    }
+    Ok(records)
+}
+
+fn read_mailboxes(
+    table: &redb::ReadOnlyTable<u64, &[u8]>,
+) -> Result<Vec<Mailbox>, DomainStoreError> {
+    let mut records = Vec::new();
+    for entry in table.iter()? {
+        let (key, value) = entry?;
+        let record: Mailbox = decode(value.value())?;
+        if key.value() != record.generation_id.get() {
+            return Err(DomainStoreError::InvalidRow("Mailbox key"));
+        }
+        records.push(record);
+    }
+    Ok(records)
+}
+
+fn apply_mutation(
+    snapshot: &mut DomainStore,
+    mutation: &DomainStoreMutation,
+) -> Result<(), DomainStoreError> {
+    match mutation {
+        DomainStoreMutation::PutGeneration(next) => put_generation(snapshot, next.clone()),
+        DomainStoreMutation::PutParticipant(next) => put_participant(snapshot, next.clone(), false),
+        DomainStoreMutation::CleanParticipantAfterAbsence(next) => {
+            put_participant(snapshot, next.clone(), true)
+        }
+        DomainStoreMutation::PutSession(next) => put_session(snapshot, next.clone()),
+        DomainStoreMutation::PutMailbox(next) => put_mailbox(snapshot, next.clone(), false),
+        DomainStoreMutation::CleanMailboxAfterAbsence(next) => {
+            put_mailbox(snapshot, next.clone(), true)
+        }
+        DomainStoreMutation::PutSessionTerminal(next) => {
+            put_session_terminal(snapshot, next.clone(), false)
+        }
+        DomainStoreMutation::CleanSessionTerminalAfterAbsence(next) => {
+            put_session_terminal(snapshot, next.clone(), true)
+        }
+    }
+}
+
+fn put_generation(snapshot: &mut DomainStore, next: Generation) -> Result<(), DomainStoreError> {
+    if next.domain_id != snapshot.domain.domain_id {
+        return Err(DomainStoreError::DomainMismatch);
+    }
+    if let Some(current) = snapshot
+        .generations
+        .iter_mut()
+        .find(|record| record.generation_id == next.generation_id)
+    {
+        validate_generation_transition(current, &next)?;
+        *current = next;
+    } else {
+        if next.durable_decision != DurableDecision::None {
+            return Err(DomainStoreError::InvalidRow("initial Generation"));
+        }
+        snapshot.generations.push(next);
+    }
+    Ok(())
+}
+
+fn put_participant(
+    snapshot: &mut DomainStore,
+    next: Participant,
+    absence_proven: bool,
+) -> Result<(), DomainStoreError> {
+    require_generation(snapshot, next.generation_id())?;
+    if let Some(current) = snapshot.participants.iter_mut().find(|record| {
+        record.generation_id() == next.generation_id() && record.role() == next.role()
+    }) {
+        if absence_proven {
+            current.validate_transition_to_clean_after_absence(&next)?;
+        } else {
+            current.validate_transition_to(&next)?;
+        }
+        *current = next;
+    } else {
+        if absence_proven || next.state() != ParticipantState::Intent || next.ownership().is_some()
+        {
+            return Err(DomainStoreError::InvalidRow("initial Participant"));
+        }
+        snapshot.participants.push(next);
+    }
+    Ok(())
+}
+
+fn put_session(snapshot: &mut DomainStore, next: Session) -> Result<(), DomainStoreError> {
+    require_generation(snapshot, next.generation_id)?;
+    if let Some(current) = snapshot.sessions.iter_mut().find(|record| {
+        record.generation_id == next.generation_id && record.session_id == next.session_id
+    }) {
+        validate_session_transition(current, &next)?;
+        *current = next;
+    } else {
+        if !matches!(
+            next.session_phase,
+            SessionPhase::New | SessionPhase::Waiting | SessionPhase::Registering
+        ) {
+            return Err(DomainStoreError::InvalidRow("initial Session"));
+        }
+        snapshot.sessions.push(next);
+    }
+    Ok(())
+}
+
+fn put_mailbox(
+    snapshot: &mut DomainStore,
+    next: Mailbox,
+    absence_proven: bool,
+) -> Result<(), DomainStoreError> {
+    require_generation(snapshot, next.generation_id)?;
+    if let Some(current) = snapshot
+        .mailboxes
+        .iter_mut()
+        .find(|record| record.generation_id == next.generation_id)
+    {
+        validate_mailbox_transition(current, &next, absence_proven)?;
+        *current = next;
+    } else {
+        if absence_proven || next.state != ParticipantState::Intent {
+            return Err(DomainStoreError::InvalidRow("initial Mailbox"));
+        }
+        snapshot.mailboxes.push(next);
+    }
+    Ok(())
+}
+
+fn put_session_terminal(
+    snapshot: &mut DomainStore,
+    next: SessionTerminal,
+    absence_proven: bool,
+) -> Result<(), DomainStoreError> {
+    require_session(snapshot, next.generation_id(), next.session_id())?;
+    if let Some(current) = snapshot.session_terminals.iter_mut().find(|record| {
+        record.generation_id() == next.generation_id() && record.session_id() == next.session_id()
+    }) {
+        if absence_proven {
+            current.validate_transition_to_clean_after_absence(&next)?;
+        } else {
+            current.validate_transition_to(&next)?;
+        }
+        *current = next;
+    } else {
+        if absence_proven
+            || next.state() != SessionTerminalState::Intent
+            || next.container_id().is_some()
+            || !next.host_coordinator().is_unassigned()
+            || next.pty_master().is_some()
+            || !next.exec_client().is_unassigned()
+            || next.guest_process().is_some()
+        {
+            return Err(DomainStoreError::InvalidRow("initial Session Terminal"));
+        }
+        snapshot.session_terminals.push(next);
+    }
+    Ok(())
+}
+
+fn validate_generation_transition(
+    current: &Generation,
+    next: &Generation,
+) -> Result<(), DomainStoreError> {
+    if current.domain_id != next.domain_id
+        || current.generation_id != next.generation_id
+        || current.configuration_fingerprint != next.configuration_fingerprint
+        || current.coordinator_id != next.coordinator_id
+        || current.network_sidecar_id != next.network_sidecar_id
+        || current.sandbox_id != next.sandbox_id
+    {
+        return Err(DomainStoreError::InvalidRow("Generation identity"));
+    }
+    let valid = current.durable_decision == next.durable_decision
+        || matches!(
+            (current.durable_decision, next.durable_decision),
+            (
+                DurableDecision::None,
+                DurableDecision::Preparing | DurableDecision::Clean
+            ) | (
+                DurableDecision::Preparing,
+                DurableDecision::Published | DurableDecision::Clean
+            ) | (DurableDecision::Published, DurableDecision::Clean)
+        );
+    if valid {
+        Ok(())
+    } else {
+        Err(DomainStoreError::InvalidRow("Generation transition"))
+    }
+}
+
+fn validate_session_transition(current: &Session, next: &Session) -> Result<(), DomainStoreError> {
+    if current.generation_id != next.generation_id
+        || current.session_id != next.session_id
+        || current.cli_id != next.cli_id
+        || current.session_anchor_id != next.session_anchor_id
+    {
+        return Err(DomainStoreError::InvalidRow("Session identity"));
+    }
+    let valid = current.session_phase == next.session_phase
+        || matches!(
+            (current.session_phase, next.session_phase),
+            (
+                SessionPhase::New,
+                SessionPhase::Waiting | SessionPhase::Registering | SessionPhase::Failed
+            ) | (
+                SessionPhase::Waiting,
+                SessionPhase::Registering | SessionPhase::Closed | SessionPhase::Failed
+            ) | (
+                SessionPhase::Registering | SessionPhase::HostExecuting,
+                SessionPhase::Attached | SessionPhase::Closed | SessionPhase::Failed
+            ) | (
+                SessionPhase::Attached,
+                SessionPhase::Prompting
+                    | SessionPhase::HostExecuting
+                    | SessionPhase::Closed
+                    | SessionPhase::Failed
+            ) | (
+                SessionPhase::Prompting,
+                SessionPhase::Attached
+                    | SessionPhase::HostExecuting
+                    | SessionPhase::Closed
+                    | SessionPhase::Failed
+            )
+        );
+    if valid {
+        Ok(())
+    } else {
+        Err(DomainStoreError::InvalidRow("Session transition"))
+    }
+}
+
+fn validate_mailbox_transition(
+    current: &Mailbox,
+    next: &Mailbox,
+    absence_proven: bool,
+) -> Result<(), DomainStoreError> {
+    if current.generation_id != next.generation_id
+        || current.identity_path != next.identity_path
+        || current.inbox_path != next.inbox_path
+        || current.outbox_path != next.outbox_path
+    {
+        return Err(DomainStoreError::InvalidRow("Mailbox identity"));
+    }
+    if absence_proven {
+        return if matches!(
+            current.state,
+            ParticipantState::Intent | ParticipantState::ReleaseIntent
+        ) && next.state == ParticipantState::Clean
+        {
+            Ok(())
+        } else {
+            Err(DomainStoreError::InvalidRow("Mailbox cleanup"))
+        };
+    }
+    let valid = current.state == next.state
+        || matches!(
+            (current.state, next.state),
+            (
+                ParticipantState::Intent,
+                ParticipantState::LeaseHeld
+                    | ParticipantState::Prepared
+                    | ParticipantState::Committed
+                    | ParticipantState::ReleaseIntent
+            ) | (
+                ParticipantState::LeaseHeld
+                    | ParticipantState::Prepared
+                    | ParticipantState::Committed,
+                ParticipantState::ReleaseIntent
+            )
+        );
+    if valid {
+        Ok(())
+    } else {
+        Err(DomainStoreError::InvalidRow("Mailbox transition"))
+    }
+}
+
+fn validate_snapshot(snapshot: &DomainStore) -> Result<(), DomainStoreError> {
+    for (index, generation) in snapshot.generations.iter().enumerate() {
+        if generation.domain_id != snapshot.domain.domain_id {
+            return Err(DomainStoreError::DomainMismatch);
+        }
+        if snapshot.generations[..index]
+            .iter()
+            .any(|other| other.generation_id == generation.generation_id)
+        {
+            return Err(DomainStoreError::DuplicateRow("Generation"));
+        }
+    }
+    for (index, participant) in snapshot.participants.iter().enumerate() {
+        require_generation(snapshot, participant.generation_id())?;
+        if snapshot.participants[..index].iter().any(|other| {
+            other.generation_id() == participant.generation_id()
+                && other.role() == participant.role()
+        }) {
+            return Err(DomainStoreError::DuplicateRow("Participant"));
+        }
+    }
+    for (index, session) in snapshot.sessions.iter().enumerate() {
+        require_generation(snapshot, session.generation_id)?;
+        if snapshot.sessions[..index].iter().any(|other| {
+            other.generation_id == session.generation_id && other.session_id == session.session_id
+        }) {
+            return Err(DomainStoreError::DuplicateRow("Session"));
+        }
+    }
+    for (index, terminal) in snapshot.session_terminals.iter().enumerate() {
+        require_session(snapshot, terminal.generation_id(), terminal.session_id())?;
+        if snapshot.session_terminals[..index].iter().any(|other| {
+            other.generation_id() == terminal.generation_id()
+                && other.session_id() == terminal.session_id()
+        }) {
+            return Err(DomainStoreError::DuplicateRow("Session Terminal"));
+        }
+    }
+    for (index, mailbox) in snapshot.mailboxes.iter().enumerate() {
+        require_generation(snapshot, mailbox.generation_id)?;
+        if snapshot.mailboxes[..index]
+            .iter()
+            .any(|other| other.generation_id == mailbox.generation_id)
+        {
+            return Err(DomainStoreError::DuplicateRow("Mailbox"));
+        }
+    }
+    Ok(())
+}
+
+fn require_generation(
+    snapshot: &DomainStore,
+    generation_id: GenerationId,
+) -> Result<(), DomainStoreError> {
+    if snapshot
+        .generations
+        .iter()
+        .any(|record| record.generation_id == generation_id)
+    {
+        Ok(())
+    } else {
+        Err(DomainStoreError::GenerationMismatch)
+    }
+}
+
+fn require_session(
+    snapshot: &DomainStore,
+    generation_id: GenerationId,
+    session_id: SessionId,
+) -> Result<(), DomainStoreError> {
+    require_generation(snapshot, generation_id)?;
+    if snapshot
+        .sessions
+        .iter()
+        .any(|record| record.generation_id == generation_id && record.session_id == session_id)
+    {
+        Ok(())
+    } else {
+        Err(DomainStoreError::MissingRow("Session"))
+    }
+}
+
+fn participant_key(record: &Participant) -> [u8; 9] {
+    let mut key = [0; 9];
+    key[..8].copy_from_slice(&record.generation_id().get().to_be_bytes());
+    key[8] = role_key(record.role());
+    key
+}
+
+fn role_key(role: ParticipantRole) -> u8 {
+    match role {
+        ParticipantRole::PreparedLower => 0,
+        ParticipantRole::StateAnchor => 1,
+        ParticipantRole::GitRouting => 2,
+        ParticipantRole::Network => 3,
+        ParticipantRole::Helper => 4,
+        ParticipantRole::Sandbox => 5,
+        ParticipantRole::Publication => 6,
+    }
+}
+
+fn session_key(generation_id: GenerationId, session_id: SessionId) -> [u8; 40] {
+    let mut key = [0; 40];
+    key[..8].copy_from_slice(&generation_id.get().to_be_bytes());
+    key[8..].copy_from_slice(session_id.as_bytes());
+    key
+}
+
+#[cfg(test)]
+mod tests;

crates/lazaret-host-coordinator/src/domain_store/tests.rs

@@ -0,0 +1,374 @@
+use std::fs::{File, OpenOptions};
+use std::path::{Path, PathBuf};
+use std::sync::atomic::{AtomicU64, Ordering};
+
+use lazaret_core::codec::encode;
+use lazaret_core::identity::{
+    ClientId, ConfigurationFingerprint, CoordinatorId, DomainId, GenerationId, HostPath,
+    NetworkSidecarId, SandboxId, SessionAnchorId, SessionId,
+};
+use lazaret_core::records::{
+    DurableDecision, ParticipantOwnership, PersistedHostProcessOwnership, PublicationOwnership,
+    SessionTerminalFields,
+};
+use lazaret_linux::filesystem::try_exclusive_flock;
+use redb::{ReadableDatabase, TableDefinition, TableHandle};
+use serde::Serialize;
+
+use super::*;
+
+static NEXT_DIRECTORY: AtomicU64 = AtomicU64::new(0);
+const FOREIGN: TableDefinition<u8, u8> = TableDefinition::new("foreign");
+
+struct TestDirectory(PathBuf);
+
+impl TestDirectory {
+    fn new(label: &str) -> Self {
+        let sequence = NEXT_DIRECTORY.fetch_add(1, Ordering::Relaxed);
+        let path = std::env::temp_dir().join(format!(
+            "lazaret-domain-store-{label}-{}-{sequence}",
+            std::process::id()
+        ));
+        std::fs::create_dir(&path).unwrap();
+        Self(path)
+    }
+
+    fn path(&self, name: &str) -> PathBuf {
+        self.0.join(name)
+    }
+}
+
+impl Drop for TestDirectory {
+    fn drop(&mut self) {
+        std::fs::remove_dir_all(&self.0).unwrap();
+    }
+}
+
+fn bytes(value: u8) -> [u8; 32] {
+    [value; 32]
+}
+
+fn domain() -> Domain {
+    Domain {
+        domain_id: DomainId::new(bytes(1)),
+        profile_name: "trusted".into(),
+        canonical_workspace: HostPath::new(b"/workspace/project".to_vec()),
+    }
+}
+
+fn generation(decision: DurableDecision) -> Generation {
+    Generation {
+        domain_id: domain().domain_id,
+        generation_id: GenerationId::new(7),
+        configuration_fingerprint: ConfigurationFingerprint::new(bytes(2)),
+        coordinator_id: CoordinatorId::new(bytes(3)),
+        network_sidecar_id: NetworkSidecarId::new(bytes(4)),
+        sandbox_id: SandboxId::new(bytes(5)),
+        durable_decision: decision,
+    }
+}
+
+fn session(phase: SessionPhase) -> Session {
+    Session {
+        generation_id: GenerationId::new(7),
+        session_id: SessionId::new(bytes(6)),
+        cli_id: ClientId::new(bytes(7)),
+        session_anchor_id: SessionAnchorId::new(bytes(8)),
+        session_phase: phase,
+    }
+}
+
+fn mailbox(state: ParticipantState) -> Mailbox {
+    Mailbox {
+        generation_id: GenerationId::new(7),
+        identity_path: HostPath::new(b"identity".to_vec()),
+        inbox_path: HostPath::new(b"inbox".to_vec()),
+        outbox_path: HostPath::new(b"outbox".to_vec()),
+        state,
+    }
+}
+
+fn bare_terminal(state: SessionTerminalState) -> SessionTerminal {
+    SessionTerminal::snapshot(SessionTerminalFields {
+        generation_id: GenerationId::new(7),
+        session_id: SessionId::new(bytes(6)),
+        state,
+        container_id: None,
+        host_coordinator: PersistedHostProcessOwnership::unassigned(),
+        pty_master: None,
+        exec_client: PersistedHostProcessOwnership::unassigned(),
+        guest_process: None,
+    })
+    .unwrap()
+}
+
+fn publication_intent() -> Participant {
+    Participant::bare_intent(GenerationId::new(7), ParticipantRole::Publication)
+}
+
+fn publication_partial() -> Participant {
+    Participant::snapshot(
+        GenerationId::new(7),
+        ParticipantRole::Publication,
+        ParticipantState::Intent,
+        Some(ParticipantOwnership::Publication(PublicationOwnership {
+            socket_path: Some(HostPath::new(b"control.sock".to_vec())),
+            identity_path: None,
+        })),
+    )
+    .unwrap()
+}
+
+fn lock_file(path: &Path) -> File {
+    OpenOptions::new()
+        .read(true)
+        .write(true)
+        .create(true)
+        .truncate(false)
+        .open(path)
+        .unwrap()
+}
+
+fn open_store(directory: &TestDirectory) -> HostCoordinatorDomainStore {
+    let lock = try_exclusive_flock(lock_file(&directory.path("domain.lock"))).unwrap();
+    HostCoordinatorDomainStore::open(lock, &directory.path("domain.redb"), &domain()).unwrap()
+}
+
+#[test]
+fn transaction_reopen_and_interrupted_write_preserve_complete_documents() {
+    let directory = TestDirectory::new("transaction");
+    let store = open_store(&directory);
+    store
+        .apply(&[
+            DomainStoreMutation::PutGeneration(generation(DurableDecision::None)),
+            DomainStoreMutation::PutParticipant(publication_intent()),
+            DomainStoreMutation::PutSession(session(SessionPhase::New)),
+            DomainStoreMutation::PutMailbox(mailbox(ParticipantState::Intent)),
+            DomainStoreMutation::PutSessionTerminal(bare_terminal(SessionTerminalState::Intent)),
+        ])
+        .unwrap();
+
+    let refused = store.apply(&[
+        DomainStoreMutation::PutGeneration(generation(DurableDecision::Preparing)),
+        DomainStoreMutation::PutSession(session(SessionPhase::Attached)),
+    ]);
+    assert!(matches!(
+        refused,
+        Err(DomainStoreError::InvalidRow("Session transition"))
+    ));
+    assert_eq!(
+        store.snapshot().unwrap().generations[0].durable_decision,
+        DurableDecision::None
+    );
+    drop(store);
+
+    let database = Database::open(directory.path("domain.redb")).unwrap();
+    let write = database.begin_write().unwrap();
+    {
+        let mut table = write.open_table(GENERATIONS).unwrap();
+        let encoded = encode(&generation(DurableDecision::Preparing)).unwrap();
+        table.insert(7, encoded.as_slice()).unwrap();
+    }
+    drop(write);
+    drop(database);
+
+    let reopened = open_store(&directory);
+    let snapshot = reopened.snapshot().unwrap();
+    assert_eq!(
+        snapshot.generations[0].durable_decision,
+        DurableDecision::None
+    );
+    assert_eq!(snapshot.participants.len(), 1);
+    assert_eq!(snapshot.sessions.len(), 1);
+    assert_eq!(snapshot.mailboxes.len(), 1);
+    assert_eq!(snapshot.session_terminals.len(), 1);
+}
+
+#[test]
+fn opener_retains_the_domain_lock_for_its_complete_lifetime() {
+    let directory = TestDirectory::new("opener");
+    let store = open_store(&directory);
+    assert!(try_exclusive_flock(lock_file(&directory.path("domain.lock"))).is_err());
+    assert!(matches!(
+        Database::open(directory.path("domain.redb")),
+        Err(DatabaseError::DatabaseAlreadyOpen)
+    ));
+    drop(store);
+    assert!(try_exclusive_flock(lock_file(&directory.path("domain.lock"))).is_ok());
+}
+
+#[test]
+fn metadata_and_typed_row_validation_fail_closed() {
+    #[derive(Serialize)]
+    struct RawMetadata<'a> {
+        schema_id: &'a str,
+        schema_version: u32,
+    }
+
+    let directory = TestDirectory::new("metadata");
+    drop(open_store(&directory));
+    let database = Database::open(directory.path("domain.redb")).unwrap();
+    let write = database.begin_write().unwrap();
+    {
+        let mut table = write.open_table(METADATA).unwrap();
+        let encoded = encode(&RawMetadata {
+            schema_id: "lazaret-domain-store-v1",
+            schema_version: 2,
+        })
+        .unwrap();
+        table.insert(SINGLETON_KEY, encoded.as_slice()).unwrap();
+    }
+    write.commit().unwrap();
+    drop(database);
+    let lock = try_exclusive_flock(lock_file(&directory.path("domain.lock"))).unwrap();
+    assert!(matches!(
+        HostCoordinatorDomainStore::open(lock, &directory.path("domain.redb"), &domain()),
+        Err(DomainStoreError::Codec(_))
+    ));
+
+    let row_directory = TestDirectory::new("row-key");
+    let store = open_store(&row_directory);
+    store
+        .apply(&[DomainStoreMutation::PutGeneration(generation(
+            DurableDecision::None,
+        ))])
+        .unwrap();
+    drop(store);
+    let database = Database::open(row_directory.path("domain.redb")).unwrap();
+    let write = database.begin_write().unwrap();
+    {
+        let mut table = write.open_table(GENERATIONS).unwrap();
+        let encoded = encode(&generation(DurableDecision::None)).unwrap();
+        table.insert(8, encoded.as_slice()).unwrap();
+    }
+    write.commit().unwrap();
+    drop(database);
+    let lock = try_exclusive_flock(lock_file(&row_directory.path("domain.lock"))).unwrap();
+    assert!(matches!(
+        HostCoordinatorDomainStore::open(lock, &row_directory.path("domain.redb"), &domain()),
+        Err(DomainStoreError::InvalidRow("Generation key"))
+    ));
+}
+
+#[test]
+fn generation_relationships_and_domain_identity_cannot_be_forged() {
+    let directory = TestDirectory::new("relationships");
+    let store = open_store(&directory);
+    assert!(matches!(
+        store.apply(&[DomainStoreMutation::PutParticipant(publication_intent())]),
+        Err(DomainStoreError::GenerationMismatch)
+    ));
+
+    let mut wrong_domain = generation(DurableDecision::None);
+    wrong_domain.domain_id = DomainId::new(bytes(99));
+    assert!(matches!(
+        store.apply(&[DomainStoreMutation::PutGeneration(wrong_domain)]),
+        Err(DomainStoreError::DomainMismatch)
+    ));
+    store
+        .apply(&[DomainStoreMutation::PutGeneration(generation(
+            DurableDecision::None,
+        ))])
+        .unwrap();
+    drop(store);
+
+    let lock = try_exclusive_flock(lock_file(&directory.path("domain.lock"))).unwrap();
+    let mut other_domain = domain();
+    other_domain.profile_name = "other".into();
+    assert!(matches!(
+        HostCoordinatorDomainStore::open(lock, &directory.path("domain.redb"), &other_domain),
+        Err(DomainStoreError::DomainMismatch)
+    ));
+}
+
+#[test]
+fn lifecycle_updates_enforce_transition_and_absence_boundaries() {
+    let directory = TestDirectory::new("transitions");
+    let store = open_store(&directory);
+    store
+        .apply(&[
+            DomainStoreMutation::PutGeneration(generation(DurableDecision::None)),
+            DomainStoreMutation::PutParticipant(publication_intent()),
+            DomainStoreMutation::PutSession(session(SessionPhase::New)),
+            DomainStoreMutation::PutMailbox(mailbox(ParticipantState::Intent)),
+            DomainStoreMutation::PutSessionTerminal(bare_terminal(SessionTerminalState::Intent)),
+        ])
+        .unwrap();
+    store
+        .apply(&[DomainStoreMutation::PutParticipant(publication_partial())])
+        .unwrap();
+
+    assert!(matches!(
+        store.apply(&[DomainStoreMutation::PutSession(session(
+            SessionPhase::Attached
+        ))]),
+        Err(DomainStoreError::InvalidRow("Session transition"))
+    ));
+    assert!(matches!(
+        store.apply(&[DomainStoreMutation::PutParticipant(
+            Participant::snapshot(
+                GenerationId::new(7),
+                ParticipantRole::Publication,
+                ParticipantState::Clean,
+                Some(ParticipantOwnership::Publication(PublicationOwnership {
+                    socket_path: None,
+                    identity_path: None,
+                })),
+            )
+            .unwrap(),
+        )]),
+        Err(DomainStoreError::Transition(
+            RecordTransitionError::AbsenceProofRequired
+        ))
+    ));
+    assert!(matches!(
+        store.apply(&[DomainStoreMutation::PutMailbox(mailbox(
+            ParticipantState::Clean
+        ))]),
+        Err(DomainStoreError::InvalidRow("Mailbox transition"))
+    ));
+    assert!(matches!(
+        store.apply(&[DomainStoreMutation::PutSessionTerminal(bare_terminal(
+            SessionTerminalState::Clean,
+        ))]),
+        Err(DomainStoreError::Transition(
+            RecordTransitionError::AbsenceProofRequired
+        ))
+    ));
+
+    store
+        .apply(&[DomainStoreMutation::CleanSessionTerminalAfterAbsence(
+            bare_terminal(SessionTerminalState::Clean),
+        )])
+        .unwrap();
+    let snapshot = store.snapshot().unwrap();
+    assert_eq!(
+        snapshot.session_terminals[0].state(),
+        SessionTerminalState::Clean
+    );
+}
+
+#[test]
+fn every_table_is_created_in_the_first_version_document() {
+    let directory = TestDirectory::new("tables");
+    drop(open_store(&directory));
+    let database = Database::open(directory.path("domain.redb")).unwrap();
+    let read = database.begin_read().unwrap();
+    for name in [
+        METADATA.name(),
+        DOMAINS.name(),
+        GENERATIONS.name(),
+        PARTICIPANTS.name(),
+        SESSIONS.name(),
+        SESSION_TERMINALS.name(),
+        MAILBOXES.name(),
+    ] {
+        assert!(
+            read.list_tables()
+                .unwrap()
+                .any(|handle| handle.name() == name)
+        );
+    }
+
+    assert!(read.open_table(FOREIGN).is_err());
+}

crates/lazaret-host-coordinator/src/lib.rs

@@ -0,0 +1,3 @@
+#![doc = "Host-side coordination authority for one Lazaret Domain."]
+
+pub mod domain_store;

docs/schema.md

@@ -386,8 +386,8 @@ classDiagram
 `durable_decision` and `session_phase` contain values defined by the application
 protocol model. This schema records them without redefining either state machine.
 Each store carries its own schema identity and version. The current Domain Store
-identity is `lazaret-domain-store-v2` with version `2`. Domain Store v1 metadata
+identity is `lazaret-domain-store-v1` with version `1`. Unknown, unversioned,
-dispatches only to legacy migration handling; it is never decoded as v2. The
+older, and newer metadata refuses before any row is interpreted. The
 Storage Catalog remains `lazaret-storage-catalog-v1` with version `1`.
 
 ### Host process identity and staged ownership
@@ -407,17 +407,9 @@ classDiagram
         start_time_ticks
     }
 
-    class LegacyUnverifiedProcessIdentityV1 {
-        <<serialized>>
-        host_pid
-        start_time_ticks
-    }
-
     class HostProcessIdentity {
         <<serialized>>
-        <<union>>
+        identity
-        PidfsV1
-        LegacyUnverifiedV1
     }
 
     class PersistedHostProcessOwnership {
@@ -467,8 +459,7 @@ classDiagram
     }
 
     PidfsProcessIdentityV1 --> PidfsProcessAuthorityV1 : authority
-    HostProcessIdentity --> PidfsProcessIdentityV1 : PidfsV1
+    HostProcessIdentity --> PidfsProcessIdentityV1 : current authority
-    HostProcessIdentity --> LegacyUnverifiedProcessIdentityV1 : LegacyUnverifiedV1
     PersistedHostProcessOwnership --> PidfsProcessIdentityV1 : Staged
     PersistedHostProcessOwnership --> HostProcessIdentity : Committed
     StagedProcessOwnership --> ProcessOwnershipMessageVersion
@@ -490,11 +481,8 @@ Every persisted host-process edge uses `PersistedHostProcessOwnership`.
 contains only a current pidfs identity. It is positive authority for exact
 same-handle cleanup and `PidfsRecoveryMatch`, including bootstrap recovery, but
 cannot satisfy readiness, publication, dependent-resource creation, or
-adoption. `Committed` may contain a current pidfs identity or a
+adoption. `Committed` contains the current pidfs identity and is the only
-legacy-unverified v1 PID/start-only value. Only committed current pidfs
+serviceable process-ownership phase.
-ownership is serviceable; the legacy variant always refuses positive process
-action. There is no observation-based conversion from legacy data to
-`PidfsProcessIdentityV1`.
 
 Participant `Intent` and `ReleaseIntent` may retain any process-slot phase.
 Every active participant state and Session Terminal `Running` requires current

docs/specification.md

@@ -406,9 +406,8 @@ broker performs this sequence:
 
 Every durable host-process slot is exactly `Unassigned`,
 `Staged(PidfsProcessIdentityV1)`, or `Committed(HostProcessIdentity)`. Only a
-current pidfs identity may be staged. A committed legacy-unverified identity is
+current pidfs identity may be staged or committed. Current staged and committed
-retained only for migration and refusal. Current staged and committed identity
+identity both authorize exact matched cleanup; only committed ownership may
-both authorize exact matched cleanup; only committed current ownership may
 satisfy an active role, readiness, publication, or adoption.
 
 A role-bound Participant is first committed as bare `Intent` with no ownership
@@ -419,8 +418,8 @@ Within Intent, optional fields move only absent-to-present. A newly acquired
 child slot moves only `Unassigned` to `Staged` to the exact same current
 identity in `Committed`. An already committed current owner or supervising
 process may enter a newly created dependent-role snapshot directly, but that
-recorded identity then remains immutable. Legacy data cannot use this
+recorded identity then remains immutable. Recorded evidence cannot be replaced
-existing-process rule. Recorded evidence cannot be replaced or cleared.
+or cleared.
 The direct existing-process edges are Network RS, Helper RS, Sandbox HC, and
 Session Terminal HC. State Anchor daemon, Git-routing daemon, Helper process,
 Sandbox RS, attached runsc, and Session Terminal exec client are acquired child
@@ -436,7 +435,7 @@ The active Participant pairs are `prepared_lower=LeaseHeld`,
 role-required physical evidence and current committed pidfs ownership in every
 required process slot. `SessionTerminal=Running` likewise requires its
 container, PTY, guest identity, and current committed HC and exec-client slots.
-Staged, unassigned, or legacy process ownership cannot satisfy either boundary.
+Staged or unassigned process ownership cannot satisfy either boundary.
 Network readiness evidence must also name the enclosing generation and match
 its policy, fingerprint, namespace, and committed RS identity internally.
 
@@ -474,13 +473,6 @@ timing assumptions.
 7. Use that same matched pidfd for every action. An action-time `ESRCH` or
    observation failure refuses without numeric fallback.
 
-Domain Store v1 PID/start-only values dispatch to
-`LegacyUnverifiedProcessIdentityV1`. They cannot be observed, converted, or
-infallibly migrated into positive authority. They refuse live process action
-until reboot, independently proven absence, or explicit operator resolution
-allows the ordinary recovery state machine to reconcile the surrounding record.
-Boot mismatch fences all old pidfs authority before PID lookup.
-
 The contract accepts two residual assumptions: Linux boot-ID collision is
 operationally negligible but not mathematically impossible, and the Linux 6.9+
 boot-monotonic 64-bit pidfs inode counter does not wrap during one boot. Codecs
@@ -802,8 +794,8 @@ document, never a half-applied generation decision.
 
 Protocol durable decision vocabulary, multi-role intent, and mismatch refuse are
 defined by the protocol model. The product store encodes that generation document
-in typed tables under a schema/db version (unknown newer versions fail closed
+in typed tables under a schema/db version (unknown versions fail closed before
-until an explicit Host Coordinator migration), including generation identity,
+row interpretation), including generation identity,
 minted runtime component IDs, and participant ownership material (for example
 prepared-artifact ID, staged or committed pidfs process ownership, mount
 identity, and network readiness fingerprint).
@@ -880,11 +872,10 @@ bootstrap recovery may advance it to release intent. These rules make every
 interrupted release conservative and prevent a mounted State Anchor from
 becoming unleased.
 
-Store version acceptance occurs before physical resource inspection. The
+Store version acceptance occurs before row interpretation or physical resource
-Domain Store v1-to-v2 migration preserves every PID/start-only value as
+inspection. The first product Domain Store identity is
-legacy-unverified and never observes it into pidfs authority. Migration steps
+`lazaret-domain-store-v1` at version `1`; unversioned, unknown, older, and newer
-create and validate destination rows in one redb transaction and update the
+metadata refuses without fallback.
-version last. Future versions follow the same fail-closed ordering.
 
 Files not represented in the upper layer follow the selected base image. Files,
 directories, and whiteouts recorded in the upper layer remain authoritative when