AnyPS5/docs/dev/debt/libSceNpUniversalDataSystem.md

libSceNpUniversalDataSystem technical debt

Silent stubs

• sceNpUniversalDataSystemRegisterContext (libSceNpUniversalDataSystem) - returns SCE_NP_UNIVERSAL_DATA_SYSTEM_OK without checking the context or handle and without recording anything. sceNpUniversalDataSystemPostEvent uses only its context and ignores the handle, so nothing depends on the registration. All ten titles in my set call it.
• sceNpUniversalDataSystemDestroyHandle and sceNpUniversalDataSystemAbortHandle (libSceNpUniversalDataSystem) - return SCE_NP_UNIVERSAL_DATA_SYSTEM_OK without checking the handle. sceNpUniversalDataSystemCreateHandle always hands out the same handle and keeps no state, so there is nothing to tear down. All ten titles in my set call sceNpUniversalDataSystemDestroyHandle; Metal Gear Solid 4 (PPSA18194) also calls sceNpUniversalDataSystemAbortHandle.

Unknown function info

• Events: sceNpUniversalDataSystemCreateEvent copies prop and returns the event's own property object through prop_ptr, as KytyPS5 does; sceNpUniversalDataSystemEventPropertyObjectSetObject, SetArray and the array setters for objects and arrays store a copy of value and return the stored copy through value_ptr. Destroying a property object or array that its Create function did not return (an event's property object or a stored copy) does nothing, as its owner frees it. These ownership rules are not verified on a console, nor are the output of sceNpUniversalDataSystemEventToString (still {}) and sceNpUniversalDataSystemEventEstimateSize (still 3).

• sceNpUniversalDataSystemCreateContext and sceNpUniversalDataSystemCreateHandle (libSceNpUniversalDataSystem) - native return codes for null output pointers (context == nullptr and handle == nullptr) are unresolved and unverified on a console. The reimplementation in KytyPS5 returns 0x80553102 (SCE_NP_UNIVERSAL_DATA_SYSTEM_ERROR_INVALID_ARGUMENT), but this error return is unverified against native hardware; host paths continue to throw std::invalid_argument until the native contract is established.

• sceNpUniversalDataSystemIntCreateRecordArray, sceNpUniversalDataSystemIntCreateRecordData and sceNpUniversalDataSystemIntCreateRecordObject (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntDeleteAllRecord (libSceNpUniversalDataSystem) - It is in the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. It is declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntDestroyRecordArray and sceNpUniversalDataSystemIntDestroyRecordData (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntDestroyRecordObject and sceNpUniversalDataSystemIntGetMemoryStat (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntPostRecordData, sceNpUniversalDataSystemIntRecordArraySetArray and sceNpUniversalDataSystemIntRecordArraySetBinary (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordArraySetBool, sceNpUniversalDataSystemIntRecordArraySetFloat32 and sceNpUniversalDataSystemIntRecordArraySetFloat64 (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordArraySetInt32, sceNpUniversalDataSystemIntRecordArraySetInt64 and sceNpUniversalDataSystemIntRecordArraySetObject (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordArraySetString, sceNpUniversalDataSystemIntRecordArraySetUInt32 and sceNpUniversalDataSystemIntRecordArraySetUInt64 (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordDataEstimateSize, sceNpUniversalDataSystemIntRecordObjectSetArray and sceNpUniversalDataSystemIntRecordObjectSetBinary (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordObjectSetBool, sceNpUniversalDataSystemIntRecordObjectSetFloat32 and sceNpUniversalDataSystemIntRecordObjectSetFloat64 (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordObjectSetInt32, sceNpUniversalDataSystemIntRecordObjectSetInt64 and sceNpUniversalDataSystemIntRecordObjectSetObject (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

• sceNpUniversalDataSystemIntRecordObjectSetString, sceNpUniversalDataSystemIntRecordObjectSetUInt32 and sceNpUniversalDataSystemIntRecordObjectSetUInt64 (libSceNpUniversalDataSystem) - The list is the intersection of the export table of the console's libSceNpUniversalDataSystem (function symbols only), the pinned aerolib names and the functions not yet defined anywhere in the repo; names and NIDs are present in the PS5 3.20 export inventory and the verified NID name database, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified.

Functional

• Trophy events: sceNpUniversalDataSystemPostEvent stores an _UnlockTrophy event with an int32 _trophy_id of 0 or more as an unlock for the user and service label of its context, as KytyPS5 does, except an id that libSceNpTrophy2 refuses when the title's trophy data is loaded (one not in the data, a platinum or a progressive trophy). _UpdateTrophyProgress goes through the title's statistic rules like any other event (below). A context need not be registered, and every post of an event that sceNpUniversalDataSystemCreateEvent returned and that is not yet destroyed returns success (a null or any other event pointer stops the game): KytyPS5's errors for an unknown or unregistered context and for a malformed unlock are not verified. The storage statistics stay zero.
• Statistics: every other event goes through the title's rules in sce_sys/uds/udsNN.ucp, which libSceNpTrophy2 reads. Only "aggregation":"latest" and "max" statistics of dataType uint32, uint64 or int32 are kept; no public source documents the other aggregations (such as count, collection and eachLatest) or types, so their definitions and rules are skipped. Only rules whose input is a $.name path (dotted for nested objects) are applied. A value is used when it is an integer of any width that is not negative and fits the statistic's type and minValue/maxValue; KytyPS5 requires the statistic's exact width, and whether the console converts, clamps or rejects other values is not known. Statistics are stored per user and service label, and every trophy's unlockCondition is compared after each event that sets one.