G8l: exact-capability revoke writer-authority audit

pub const S277_WRITER_BOUNDARY_SITES: usize = 1;
pub const S277_WRITER_AUTHORITY_SITES: usize = 0;
pub const S277_DIRECT_SCHEDULER_ACCESS_SITES: usize = S276_DIRECT_SCHEDULER_ACCESS_SITES;
pub const S277_IMMUTABLE_READ_SITES: usize = S276_IMMUTABLE_READ_SITES;
pub const S277_WHOLE_SCHEDULER_GUARDED_SITES: usize = S276_WHOLE_SCHEDULER_GUARDED_SITES;
pub const S277_WHOLE_SCHEDULER_UNROUTED_SITES: usize = S276_WHOLE_SCHEDULER_UNROUTED_SITES;
pub const S277_OPEN_WRITER_SITES: usize = S276_OPEN_WRITER_SITES;

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum G8lS277SchedulerWriterAuthorityAuditOutcome {
    Idle,
    AwaitingWriterAuthority {
        request_id: u64,
        guarded_sites: usize,
        writer_sites: usize,
    },
}

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum G8lS277SchedulerWriterAuthorityAuditError {
    S276(G8lS276SchedulerWriterAuthorityAuditError),
    S245(G8lS245ExclusionAdmissionRequestError),
    PriorCoverageDrift {
        guarded_sites: usize,
        unrouted_sites: usize,
    },
}

/// Revalidate the prior fail-closed authority boundary without taking
/// admission or constructing a production exclusive wrapper.
pub fn preflight_s277_scheduler_writer_authority(
    caller_cpu: usize,
    request: Option<G8lS245WholeSchedulerExclusionAdmissionRequestView>,
) -> Result<G8lS277SchedulerWriterAuthorityAuditOutcome, G8lS277SchedulerWriterAuthorityAuditError>
{
    match preflight_s276_scheduler_writer_authority(caller_cpu, request)
        .map_err(G8lS277SchedulerWriterAuthorityAuditError::S276)?
    {
        G8lS276SchedulerWriterAuthorityAuditOutcome::Idle => {
            Ok(G8lS277SchedulerWriterAuthorityAuditOutcome::Idle)
        }
        G8lS276SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
            request_id,
            guarded_sites,
            writer_sites,
        } if guarded_sites == S277_WHOLE_SCHEDULER_GUARDED_SITES
            && writer_sites == S277_OPEN_WRITER_SITES =>
        {
            Ok(
                G8lS277SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
                    request_id,
                    guarded_sites,
                    writer_sites,
                },
            )
        }
        G8lS276SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
            guarded_sites,
            writer_sites: _,
            ..
        } => Err(
            G8lS277SchedulerWriterAuthorityAuditError::PriorCoverageDrift {
                guarded_sites,
                unrouted_sites: S277_DIRECT_SCHEDULER_ACCESS_SITES - guarded_sites,
            },
        ),
    }
}

#[test]
fn s277_keeps_exact_revoke_writer_open_until_exclusive_authority_exists() {
    assert_eq!(S277_WRITER_BOUNDARY_SITES, 1);
    assert_eq!(S277_WRITER_AUTHORITY_SITES, 0);
    assert_eq!(S277_DIRECT_SCHEDULER_ACCESS_SITES, 113);
    assert_eq!(S277_IMMUTABLE_READ_SITES, 44);
    assert_eq!(S277_WHOLE_SCHEDULER_GUARDED_SITES, 44);
    assert_eq!(S277_WHOLE_SCHEDULER_UNROUTED_SITES, 69);
    assert_eq!(S277_OPEN_WRITER_SITES, 69);
}

  {
    id: "g8l-s277-exact-capability-revoke-writer-authority-audit-partial",
    date: "2026-08-26",
    sequence: 277,
    status: "passed",
    umbrella_status: "partial",
    title: "G8l: exact-capability revoke writer-authority audit",
    summary:
      "S277 focused 15/15 PASS ile typed IPC teardown içindeki revoke_cap_for_task_exact_under_ipc_transaction explicit scheduler writer sınırını kaynakta doğrular. Writer authority yalnız model gate'inin exclusive lease'iyle mümkündür; reader lease'i writer'ı açmaz. Whitespace/format bağımsız production inventory 113 direct / 44 immutable guarded / 69 open writer'dır; production exclusive wrapper, provider authority, whole-scheduler exclusion ve scheduler mutation üretilmez.",
    evidence: [
      "S277 focused kaynak/model kapısı iki bağımsız koşuda 15/15 PASS verdi: 130 B / SHA-256 0447f2fe9dc6fdf30815a6962cf23d978425e51bef2acde1efb27e5da13a78b3.",
      "revoke_cap_for_task_exact_under_ipc_transaction içindeki tek addr_of_mut!(SCHEDULER) writer boundary'si ve exact Capability authority tuple forwarding'i kaynakta görünür; writer authority site sayısı 0, açık writer sayısı 69'dur.",
      "Model gate reader membership exclusive writer authority'yi ExclusiveBusy ile bloklar; reader bırakıldıktan sonra non-zero token'lı exclusive lease alınır ve bırakılır. Bu host/model evidence'tır.",
      "S276 authority preflight yeniden doğrulanır; pending S245 request korunur ve sonuç AwaitingWriterAuthority { guarded_sites: 44, writer_sites: 69 } olarak döner.",
      "S238–S277 dependency matrisi iki koşuda 41 grup / 539/539 PASS; süre-normalize 11205 B özet byte-equal / SHA-256 e15b7f9015523240d92cd033426c41d5094fe73d670b98b2dd7569c0b81e45c5.",
      "Yedi frozen tarihsel G8h assertion'ını ayıran workspace iki koşuda 239 grup / 2306 PASS / 0 fail / 7 filtered; normalize 23064 B özet byte-equal / SHA-256 e5b9b83692a6aaf1dd874ed90b218f8b1252e1bb0be56c291a45800dacb079e9.",
      "Ortak make verify-qemu iki koşuda PASS verdi; ham loglar byte-equal değildir. W^X 31/31, S130–S154, RuntimePmm 6144→6144, active 0→0, EL0 x4096, IPC 20/20 ve SEC5 korunur; bu S277 production writer invocation kanıtı değildir.",
      "S277 production exclusive wrapper, provider authority, whole-scheduler exclusion, QEMU runtime fixture veya scheduler mutation iddiası eklemez; physical/device operations=0 ve RUNBOOK_EXECUTED_IN_S277=NO.",
    ],
    commands: [
      "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s277_exact_capability_revoke_writer_authority_audit -- --test-threads=1",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-qemu",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5,smp",
    ],
    terminalSessions: [
      {
        id: "g8l-s277-exact-capability-revoke-writer-authority-audit",
        title: "G8l S277 exact-capability revoke writer-authority audit",
        commandLines: [
          "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s277_exact_capability_revoke_writer_authority_audit -- --test-threads=1",
        ],
        outputLines: [
          "test result: ok; S277 focused 1 group / 15 passed; 0 failed",
          "repeat-stable quiet output: 130 B / 0447f2fe9dc6fdf30815a6962cf23d978425e51bef2acde1efb27e5da13a78b3",
          "exact-capability revoke writer authority remains model-only: reader blocks exclusive lease; 69 production writer sites remain open",
          "dependency: S238–S277 · 41 groups · 539/539 PASS; workspace: 239 groups · 2306 PASS · 7 historical filtered",
        ],
        exitCode: 0,
        outputMode: "selected",
      },
    ],
    terminalSessionsNote:
      "S277 kaynak/model fail-closed authority boundary'sidir; production writer guard, QEMU fixture mutation ve fiziksel/device execution claim edilmez.",
    limitations: [
      "S277 yalnız revoke_cap_for_task_exact_under_ipc_transaction writer boundary'sini audit eder; 69 production writer site açık kalır.",
      "Exclusive lease yalnız host/model gate'inde test edilir; production exclusive wrapper, provider authority ve whole-scheduler exclusion açık kalır.",
      "S238–S277 dependency matrisi 41 grup / 539/539 PASS ile genişletildi; bu, production writer authority kanıtı değildir.",
      "Supported-profile runtime invocation, Generic SMP ve fiziksel RPi kabulü açık kalır; S277 physical/device operations=0 ve RUNBOOK_EXECUTED_IN_S277=NO.",
    ],
  },