G8l: generic capability-revoke writer-authority audit

pub const S280_WRITER_BOUNDARY_SITES: usize = 1;
pub const S280_WRITER_AUTHORITY_SITES: usize = 0;
pub const S280_DIRECT_SCHEDULER_ACCESS_SITES: usize = S279_DIRECT_SCHEDULER_ACCESS_SITES;
pub const S280_IMMUTABLE_READ_SITES: usize = S279_IMMUTABLE_READ_SITES;
pub const S280_WHOLE_SCHEDULER_GUARDED_SITES: usize = S279_WHOLE_SCHEDULER_GUARDED_SITES;
pub const S280_WHOLE_SCHEDULER_UNROUTED_SITES: usize = S279_WHOLE_SCHEDULER_UNROUTED_SITES;
pub const S280_OPEN_WRITER_SITES: usize = S279_OPEN_WRITER_SITES;

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum G8lS280SchedulerWriterAuthorityAuditOutcome {
    Idle,
    AwaitingWriterAuthority {
        request_id: u64,
        guarded_sites: usize,
        writer_sites: usize,
    },
}

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum G8lS280SchedulerWriterAuthorityAuditError {
    S279(G8lS279SchedulerWriterAuthorityAuditError),
    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_s280_scheduler_writer_authority(
    caller_cpu: usize,
    request: Option<G8lS245WholeSchedulerExclusionAdmissionRequestView>,
) -> Result<G8lS280SchedulerWriterAuthorityAuditOutcome, G8lS280SchedulerWriterAuthorityAuditError>
{
    match preflight_s279_scheduler_writer_authority(caller_cpu, request)
        .map_err(G8lS280SchedulerWriterAuthorityAuditError::S279)?
    {
        G8lS279SchedulerWriterAuthorityAuditOutcome::Idle => {
            Ok(G8lS280SchedulerWriterAuthorityAuditOutcome::Idle)
        }
        G8lS279SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
            request_id,
            guarded_sites,
            writer_sites,
        } if guarded_sites == S280_WHOLE_SCHEDULER_GUARDED_SITES
            && writer_sites == S280_OPEN_WRITER_SITES =>
        {
            Ok(
                G8lS280SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
                    request_id,
                    guarded_sites,
                    writer_sites,
                },
            )
        }
        G8lS279SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
            guarded_sites,
            writer_sites: _,
            ..
        } => Err(
            G8lS280SchedulerWriterAuthorityAuditError::PriorCoverageDrift {
                guarded_sites,
                unrouted_sites: S280_DIRECT_SCHEDULER_ACCESS_SITES - guarded_sites,
            },
        ),
    }
}

#[test]
fn s280_keeps_generic_capability_revoke_writer_open_until_exclusive_authority_exists() {
    assert_eq!(S280_WRITER_BOUNDARY_SITES, 1);
    assert_eq!(S280_WRITER_AUTHORITY_SITES, 0);
    assert_eq!(S280_DIRECT_SCHEDULER_ACCESS_SITES, 113);
    assert_eq!(S280_IMMUTABLE_READ_SITES, 44);
    assert_eq!(S280_WHOLE_SCHEDULER_GUARDED_SITES, 44);
    assert_eq!(S280_WHOLE_SCHEDULER_UNROUTED_SITES, 69);
    assert_eq!(S280_OPEN_WRITER_SITES, 69);
}

  {
    id: "g8l-s280-capability-revoke-writer-authority-audit-partial",
    date: "2026-08-26",
    sequence: 280,
    status: "passed",
    umbrella_status: "partial",
    title: "G8l: generic capability-revoke writer-authority audit",
    summary:
      "S280 focused 15/15 PASS ile generic id-only revoke_cap_for_task akışındaki 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: [
      "S280 focused kaynak/model kapısı iki bağımsız koşuda 15/15 PASS verdi: 130 B / SHA-256 0447f2fe9dc6fdf30815a6962cf23d978425e51bef2acde1efb27e5da13a78b3.",
      "revoke_cap_for_task içindeki tek addr_of_mut!(SCHEDULER) writer boundary'si ve sched.revoke_cap_for_task(task_id, cap_id) 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. Bu host/model evidence'tır.",
      "S279 authority preflight yeniden doğrulanır; pending S245 request korunur ve sonuç AwaitingWriterAuthority { guarded_sites: 44, writer_sites: 69 } olarak döner.",
      "Dört AArch64 profil derlemesi iki koşuda byte-equal exit 0 verdi: QEMU 110646 B / 01e95642, RPi4 149371 B / dfe448f8, RPi5 376058 B / fcede387 ve RPi5+SMP 376000 B / 0d90133c. Warning header'ları sırasıyla 291, 389, 745 ve 745'tir; zero-warning iddiası değildir.",
      "Birleşik board-rpi5,board-qemu özellikleri iki koşuda beklenen exit 101, 18590 B / 3217c783 ile fail-closed kaldı; S280 writer boundary'si iki board profilinin birlikte etkinleşmesini açmaz.",
      "S238–S280 dependency matrisi iki koşuda 44 grup / 584/584 PASS; süre-normalize 5730 B özet byte-equal / SHA-256 bf30a196b6e4b58d14a16817e25b2cffdacbcf9ef1c7bb4a66d4f9d7e751c1d1. Bu production writer-authority invocation kanıtı değildir.",
      "S280 ilk iki ortak QEMU denemesinde S142 fatal-count ve S270 post-return absence yarışlarını RED yakaladı. S271 aynı 128-yield bütçesinde exact user-copy marker ile tam scheduler/endpoint/provenance absence'ı birlikte bekleyecek biçimde güçlendirildi; smoke artık GRAPH_ABSENT=YES gerektirir.",
      "Düzeltmeden sonra ortak make verify-qemu iki koşuda PASS verdi: 116222 B / 4087422d ve 116139 B / 39e48b48; W^X 31/31, RuntimePmm baseline, EL0 x4096, IPC 20/20, tek beklenen S142 fatal containment ve SEC5 korunur. Bu ortak smoke S280 production writer invocation kanıtı değildir.",
      "Yedi frozen tarihsel assertion dışlandığında workspace iki koşuda 242 sonuç grubu / 2353 PASS / 7 filtered; 23355 B canonical özet byte-equal / 8104767c. Filtresiz koşu frozen S96 exceptions.S identity kapısında exit 101 kaldı; tam-workspace GREEN iddia edilmez.",
      "S280 production exclusive wrapper, provider authority, whole-scheduler exclusion, QEMU runtime fixture veya scheduler mutation iddiası eklemez; physical/device operations=0 ve RUNBOOK_EXECUTED_IN_S280=NO.",
    ],
    commands: [
      "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s280_capability_revoke_writer_authority_audit -- --test-threads=1",
      "cargo check -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-qemu",
      "cargo check -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi4",
      "cargo check -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5",
      "cargo check -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5,smp",
      "cargo check -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5,board-qemu",
      "make verify-qemu",
    ],
    terminalSessions: [
      {
        id: "g8l-s280-capability-revoke-writer-authority-audit",
        title: "G8l S280 generic capability-revoke writer-authority audit",
        commandLines: [
          "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s280_capability_revoke_writer_authority_audit -- --test-threads=1",
        ],
        outputLines: [
          "test result: ok; S280 focused 1 group / 15 passed; 0 failed",
          "repeat-stable quiet output: 130 B / 0447f2fe9dc6fdf30815a6962cf23d978425e51bef2acde1efb27e5da13a78b3",
          "generic capability-revoke writer authority remains model-only: reader blocks exclusive lease; 69 production writer sites remain open",
          "dependency: S238–S280 · 44 groups · 584/584 PASS; workspace: 242 groups · 2353 PASS · 7 historical filtered",
        ],
        exitCode: 0,
        outputMode: "selected",
      },
    ],
    terminalSessionsNote:
      "S280 kaynak/model fail-closed authority boundary'sidir; production writer guard, QEMU fixture mutation ve fiziksel/device execution claim edilmez.",
    limitations: [
      "S280 yalnız revoke_cap_for_task 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–S280 dependency matrisi 44 grup / 584/584 PASS olarak genişletilmiştir; bu production writer authority kanıtı değildir.",
      "Filtresiz workspace frozen S96 identity kapısında RED'dir; yalnız exact yedi tarihsel assertion dışlandığında 242 grup / 2353 PASS elde edilir.",
      "Supported-profile runtime invocation, Generic SMP ve fiziksel RPi kabulü açık kalır; S280 physical/device operations=0 ve RUNBOOK_EXECUTED_IN_S280=NO.",
    ],
  },