sync(upstream): integrate Batch 26 socket options, sysctl uname, depth fallback, and libc math

[RINNECODER]

Summary of Changes

Integrates Upstream Sync Batch 26 from boykopovar/AnyPS5:

• PR fix(libSceNet): close a libkernel socket through sceNetSocketClose boykopovar/AnyPS5#6140: sceNetSocketClose POSIX socket close compliance.
• PR fix(libSceNet): set an option on a libkernel socket through sceNetSetsockopt boykopovar/AnyPS5#6142: sceNetSetsockopt socket option routing.
• PR fix(libSceAudioOut): report the front left speaker at +30 degrees, as the console does boykopovar/AnyPS5#6871: libSceAudioOut speaker angles shifted to +30°.
• PR fix(savedata): prevent duplicate mounts of one backing directory boykopovar/AnyPS5#6724: libSceSaveData reject duplicate mount points.
• PR fix(libSceSaveData.native): return error for uninitialized sceSaveDataSyncSaveDataMemory boykopovar/AnyPS5#6831: sceSaveDataSyncSaveDataMemory uninitialized return code fix.
• PR feat(libkernel): answer the uname sysctl names boykopovar/AnyPS5#6220: libkernel uname sysctl names.
• PR fix(libkernel): reject invalid open flag combinations boykopovar/AnyPS5#6857: libkernel reject invalid open flag combinations.
• PR feat(libc): implement getopt_long_only boykopovar/AnyPS5#6533: libc getopt_long_only implementation.
• PR feat(libc): implement telldir and seekdir boykopovar/AnyPS5#6211: libc telldir and seekdir directory stream tracking.
• PR feat(libc): implement the uchar.h conversions, mblen and wctomb boykopovar/AnyPS5#7355: libc uchar.h conversions, mblen, wctomb.
• PR feat(libc): implement long double, Bessel and integer math exports boykopovar/AnyPS5#7354: libc long double, Bessel functions, integer math exports.
• PR fix(shader): honor f64 comparison input denormal mode boykopovar/AnyPS5#6850: shader f64 comparison denormals.
• PR fix(shader): initialize LDS lock from one invocation boykopovar/AnyPS5#6670: shader LDS atomic lock initialization.
• PR fix(agc): read a 32-bit depth-bits T# over guest memory through a float view boykopovar/AnyPS5#7346: libSceAgcDriver 32-bit depth-bits read fallback to Format32Float view.

Verification

• Zero code comments policy verified with tools/check_conventions.py.
• Rosetta test suite: 25/25 (100% pass).
• Native Metal test suite: 63/63 (100% pass).

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-18T03:13:59.296948Z	e3c8329	PR opened

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