The guest-access guard covers CB bytes times samples (the single-sample layout size alone missed the later sample planes' tile padding), with a test row in that padding. Remove two TechnicalDebt lines duplicated by the rebase, document the guard bound and the unevicted targets, and add the multisampled targets to ARCHITECTURE.md.
The duplicate ColorTarget::cmaskAddress, decode and size helper are gone: multisampled targets
use main's cmaskAddress/cmaskBytes (whole metablocks). Single-sample targets keep main's rule
(CMASK under FAST_CLEAR); a multisampled one takes it under FAST_CLEAR or COMPRESSION. A zero
fill of the whole CMASK clears at the next use, 0xFFFFFFFF marks it expanded, any other or
partial fill refuses the next use; eliminate/DCC passes over a multisampled target and a CB
resolve into a fast-clear destination are refused. The draw key adds CMASK_BASE_EXT (0x398),
which main decodes but did not key.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A descriptor replaced before the shared-memory path probe can otherwise
bypass the pinned-object identity check through native fallback. Compare
the negative probe's current file identity to the initial snapshot and
reject a mismatch. Exercise the earlier window with an ordinary file for
all six descriptor operations.
Confidence: high
Scope-risk: narrow
Tested: 18 Linux runtime tests with zero skips; 18 deterministic reuse scenarios; affected three patched modules; standalone ASan/UBSan; Clang analyzer; conventions and diff checks
Not-tested: Full project build/suite, Windows runtime, console hardware and titles
Directive: Identity checks do not synchronize the entire descriptor table or identify separate opens of the same inode
Keep guest creation-mask state in libc behind C-linkage helpers so NID
patching preserves the shared exports. Reject a pinned descriptor whose
file identity differs from the snapshot taken before classification.
Exercise close and reuse from another thread at both acquisition windows
for writes, resize and seek, and create temporary ordinary-file fixtures
so runtime tests work without the source tree.
Constraint: NID exemptions require the literal suffix at the end of the exported symbol
Confidence: high
Scope-risk: narrow
Tested: 18 targeted Linux runtime tests with zero skips; patched_libraries for libc/libkernel/libkernel_sys; standalone ASan/UBSan with warnings as errors; source-prefix-remapped fixtures; Clang analyzer and conventions
Not-tested: Full project build and library set, Windows runtime, console hardware and titles
Directive: Device/inode validation establishes file identity, not open-file-description identity
Pin the descriptor before mmap validation so guest descriptor reuse cannot
redirect the eventual mapping. Apply the canonical guest creation mask when
creating named objects, distinguishing new objects before setting permissions
without changing the host process umask. Add regressions that reproduce both
failures and document the remaining host requirements.
Constraint: Guest umask must not mutate the process-wide host mask
Confidence: high
Scope-risk: narrow
Tested: 17 targeted Linux runtime tests passed with zero skips; conventions and diff checks; Clang analyzer on three changed production translation units
Not-tested: Full project build and suite, Windows runtime, console hardware and titles
Complete the object lifecycle through guest mapping and unlink APIs, and
preserve FreeBSD shared-object size and seek rules across scalar, vector
and asynchronous descriptor writes. Pin descriptors during operations and
coordinate size-sensitive operations across cooperating emulator processes.
Constraint: Linux host support with existing dependencies and allocation tracking
Rejected: Bare descriptor registry | close, duplication and reuse invalidate identity
Rejected: Per-object OFD locks | forked descriptors share the same lock description
Confidence: high
Scope-risk: moderate
Directive: Keep guest resize, truncating open and bounded writes under the same namespace guard
Tested: Ten Linux runtime suites; focused shared-memory ASan/UBSan suite with warnings as errors
Not-tested: Windows build, PS5 hardware and title compatibility
Translate guest named-open flags and permissions to POSIX shared-memory descriptors. Bound guest names and use the existing digest implementation to keep a stable AnyPS5 namespace, including long names and internal slashes. Preserve anonymous and Windows behavior, and record the separate unlink and guest mapping gaps.
Constraint: Builds and tests run only through the enrolled 191 compute service.
Rejected: Direct Linux guest names | cannot represent FreeBSD internal slashes and 1023-byte names.
Tested: Source review and diff checks; baseline job100619 accepted, result retrieval currently times out.
Not-tested: Runtime verification pending on191; full build, Windows and titles.
Confidence: medium
Scope-risk: narrow
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