Mount, unmount, param, icon and mount-info calls read and wrote the
global mount slot table without a lock, so two threads mounting at
once could take the same slot and one would later fail to unmount its
own mount point. Guard the table with a mutex and make the initialization
count atomic.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MBXJqzgohLeVAeHsn4Jpm7
sceSaveDataSetParam dropped the params, and sceSaveDataGetParam and
sceSaveDataDirNameSearch returned zeros, so a title that checks the params of
the save it found took its profile for a new one and rewrote it with defaults
on every boot. The params now live in a <directory>.param sidecar next to the
save directory, written by SetParam (mtime refreshed) and returned by GetParam
and by the directory search, with the directory's write time when no param
was stored yet.
The mount point is /savedata<N>, as on the console: a title read its profile
through /host//_sm/0/Profile when the mount point had another shape, and that
path does not exist.
The module logs the first three calls of each entry point, like the core
module; APS5_SAVEDATA_TRACE lifts the limit.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Rework the local SaveData implementation into a general-purpose, title-agnostic
backend used by both the native library and the standard libSceSaveData path:
- Directory aliasing: long save directory names are hashed into short mount
point aliases (persisted to disk) so they fit the SDK's fixed-size mount
point buffer, with the aliases reversed on directory search.
- Wildcard directory-name search (%/_ patterns) with sorting and optional
reverse order, matching the DirNameSearch contract.
- Save-data "memory" slots: small per-user, per-slot blobs the title can
set up, read and write without mounting a directory, backed by files under
the save root with a companion parameter blob, size and range validation
on every access, and a dirty flag consulted on commit.
- Async-flavored operations (backup, commit, memory sync) that queue
SaveDataEvent records consumed through GetEventResult and can be bound to
kernel event flags, plus transaction-resource and cancel/abort bookkeeping.
- Atomic file writes (temp file + rename) so a mid-write crash never leaves a
torn save on disk, and corrected/duplicated SDK error code constants.
- Local storage app-status get/set/delete and transferring-mount support for
PS4-to-PS5 style save transfers.
The native library keeps its own lighter-weight mount/memory implementation
(short "/_sm/<slot>" mount point aliases via the path-alias table) while
gaining the same per-user memory-slot separation, atomic writes and bounds
checking; the two implementations were merged by hand where upstream had
independently touched the native Export.cpp in the same area (backup/event
queue, short mount points) to keep both sets of improvements.
None of this is game-specific: it is a general local save-data backend that
works for any title and tolerates any user id.
Claude
STL1te
OverkillLabs
boykopovar