fix: media database recovery, symlink scanning, cover invalidation and SteamOS exit status - #1373
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The walk decided symlink-ness from the dirent type alone:
isSymlink := d.Type()&os.ModeSymlink != 0
Both exclusion paths sit behind that flag - the excluded-directory skip
from #1294 and the alias skip from #1351. Linux's exFAT driver returns
DT_REG for symlinks in getdents64 while reporting them correctly through
lstat, so on MiSTer, whose /media/fat is exFAT, neither path could ever
run.
Measured on a MiSTer before this change: a walk over a tree of 88
symlinks reported symlinksEncountered 0, and a single link aliasing an
already-indexed ROM took Genesis from 708 to 709 media, indexing the
alias as a second copy of the same file.
Filesystems are asked once per scan root rather than per entry, and only
the FAT family answers no, so every filesystem that already reports the
type keeps the walk exactly as it was. Where the answer is no, a
non-directory entry costs one plain lstat - not the timeout-wrapped kind,
which stays on the symlink branches that only a real link reaches.
Directories are never lstatted: a directory entry is reported correctly
everywhere here, and a link to one arrives as a non-directory, which is
the case that gets checked.
After the change the same device reports direntSymlinkTypes false,
symlinksEncountered 1 and symlinkAliasesSkipped 1 for an organizer folder
written into _Arcade under a name the exclude list does not cover, with
the Arcade count held at 2971.
walk_skipdir_test.go pins the assumption the alias branch rests on. It
returns filepath.SkipDir for an alias, and under filepath.WalkDir that
would skip every remaining entry in the containing directory - dropping
real media sitting beside organizer output. fastwalk does not behave that
way, and now a test says so.
media.search and media.history answer hasCover from an in-memory cover availability index. A scrape writes image properties through ApplyScrapeResult, whose post-commit hook recorded the affected systems for thumbnail invalidation - a different cache. Nothing dropped the cover index, so it kept answering from the state it was built in and every freshly scraped cover reported hasCover false until Core restarted. Observed on a MiSTer: the mister-docs scraper matched 5 titles and wrote image-boxart properties for all of them, media.search reported hasCover false for each, and restarting Core flipped them all to true without anything else changing. The clear goes in recordScrapeImageChanges, which already returns early when a write touched no image properties and already runs after the commit on both ApplyScrapeResult and ApplyScrapeResults, so the two scrape write paths are covered and an ordinary metadata-only scrape pays nothing. Verified on the device: with artwork added for a title that had none, a scrape now takes it from hasCover false to true in the same process.
…rying #1335 gave startup failures a person has to resolve their own exit status and taught the service units to decline restarting on it. cmd/linux and cmd/replayos map the error through cli.ExitCodeFor; cmd/steamos still exited 1 for everything. SteamOS installs the same unit as Linux, through pkg/platforms/linux/installer, so its unit already carries RestartPreventExitStatus=78 while its binary could never produce a 78. A schema-ahead user database on a Steam Deck therefore still gets the restart loop the change was written to stop: the unit retries every five seconds, each attempt reopens the databases and fails in the same place, and the one line explaining the problem is buried under copies of itself. The panic handler keeps exiting 1. A panic is not a state on disk that a person has to go and fix, and retrying it is reasonable. Confirmed against a MiSTer that the error itself carries the sentinel the whole way: with the user database pushed to a version above the newest embedded migration, startup reports "database is at version 20991231000000 but this binary only supports up to 20260818120000, update to a newer version or reinstall the previous version" through three layers of wrapping. The new test closes the last side of the triangle. One test already pins the sentinel to the status, and another pins the status to the unit files; nothing checked that the entrypoints installing those units return it. It fails on the old cmd/steamos.
#1249 added streamerAtTargetSampleRate so a source already at the output rate is handed straight through instead of being wrapped in a resampler. Nothing referenced it from a test, so neither branch was exercised: a regression that always resampled would have cost work per sample on the devices with the least to spare, and one that never resampled would have played every other rate at the wrong pitch. Both are silent failures. The passthrough case asserts identity. The resampling cases assert the source is wrapped and that the wrapper actually reads from it, so a stub returning some unrelated streamer would not pass. 192 kHz is covered because that is the rate of the bundled feedback sounds in pkg/assets/sounds, which is the path that runs on a stock install. Verifying this acoustically was not possible on the MiSTer here: no audio reaches the HDMI capture card at all, including game music, so the rig cannot tell a correct tone from a wrong one.
… start Corruption found once the media database is open routes into the recovery in index_resume.go, which recreates the file and reindexes. Corruption bad enough to fail the migration check never reached it: makeDatabase returned the error, Start gave up, and the next boot failed in the same place. The result is a device that cannot run Zaparoo at all, over a file that a reindex rebuilds from the filesystem. That is the same trade the schema-ahead branch directly above already resolves in favour of starting, for the same reason - and it says so: "a device that will not boot is a far worse outcome than a rebuild". Reproduced on a MiSTer by scribbling over pages of media.db. Core refused to start twice in a row, writing media.db.corrupt each time and never acting on it: error migrating mediadb: failed to run media database migrations: checking database schema version: database disk image is malformed After this change the same device starts, logs the integrity report, keeps a forensic copy on development builds the way the runtime recovery does, rebuilds, and reindexes on its own. Only genuine SQLite corruption takes the branch. NoteCorruption decides that, and it is asked once before the switch because it writes the marker as a side effect. A transient open failure still ends startup rather than discarding a database that was fine. The user is told what happened in the words that fit: a downgrade and a damaged file both end in a rebuild, but "this version is older than the one that last ran" is misleading when nobody changed versions, so the corruption notice names the damage and points at the storage.
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📝 WalkthroughWalkthroughThe pull request updates supervised exit codes, adds audio resampling tests, invalidates cover caches after scraping, improves symlink detection during media scans, and rebuilds corrupt media databases during startup. ChangesSupervised exit status
Audio resampling coverage
Cover availability cache
Filesystem symlink detection
Corrupt media database recovery
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to The PR improves database recovery, filesystem scanning, cover visibility, and SteamOS exit handling, but its recovery message may incorrectly imply that data came from an older Zaparoo version. The change is otherwise mergeable with explicit owner follow-up to correct that wording. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@pkg/audio/resample_bypass_test.go`:
- Around line 73-74: Strengthen the mismatched-rate cases in the resampling
tests: update the 44.1 kHz assertion to require a rate-specific pull count that
rules out no-op and incorrect-ratio behavior while allowing buffering, and in
the 192 kHz subtest call Stream on the resampled result before asserting source
consumption using an appropriate rate-specific bound.
In `@pkg/service/mediadb_schema_reset_test.go`:
- Line 328: Update the tests around notifyMediaDBSchemaReset to include a
corrupt: true case, then assert the corruption-specific inbox message title and
body. Keep coverage for the existing non-corrupt path so version-change
messaging cannot replace the damage-specific recovery message.
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cmd/steamos/main.gopkg/audio/resample_bypass_test.gopkg/cli/exit_test.gopkg/database/mediadb/scrape_cover_invalidation_test.gopkg/database/mediadb/sql_scraper.gopkg/database/mediascanner/dirent_linux.gopkg/database/mediascanner/dirent_other.gopkg/database/mediascanner/dirent_test.gopkg/database/mediascanner/mediascanner.gopkg/database/mediascanner/walk_skipdir_test.gopkg/service/mediadb_corrupt_startup_test.gopkg/service/mediadb_schema_reset_test.gopkg/service/service.gopkg/service/startup.go
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The mismatched-rate assertion allowed the source to be read one-for-one, so a passthrough would have passed it, and the 192kHz case never streamed at all. Both now pull ten buffers and check the input drawn against the rate ratio, which a passthrough and an inverted ratio both miss by far more than the slack the resampler's chunking needs. notifyMediaDBSchemaReset was only ever called with corrupt false, so nothing covered the wording added for a damaged database. Cover both flags and assert the title and the phrase each path turns on, so the version-change explanation cannot come back on the corruption path.
TestStartRunLoopDispatchesOperationThenStopsOnCancel waited on the server's result counter and then cancelled, but the loop marks the command reported only after the POST returns. Cancelling in that window killed the in-flight request, so MarkRemoteCommandResultReported never ran and the mock expectation failed. Wait on the mark itself, and read the request counters atomically like the handler writes them.
produced * srcRate overflows a 32-bit int at 192kHz, so the expected pull count would have been wrong on the arm builds Core ships to.
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Inline comments:
In `@pkg/service/mediadb_schema_reset_test.go`:
- Line 341: Update the corrupt-database message in startup.go to remove the
unsupported reference to an older Zaparoo version, using wording that indicates
the settings existed before the database was rebuilt; update the corresponding
wantBody expectation in the relevant schema reset test to match.
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Four defects found while testing the
v2.16.1..mainrange on a MiSTer, plus onetest gap. Each fix has a regression test that fails without it.
A corrupt media database stopped the device booting Core
Corruption found once the media database is open routes into the recovery in
index_resume.go, which recreates the file and reindexes. Corruption bad enoughto fail the migration check never reached it:
makeDatabasereturned the error,Startgave up, and the next boot failed in exactly the same place.On the device Core refused to start twice in a row, writing
media.db.corrupteach time and never acting on it:
That is a device that cannot run Zaparoo at all, over a file a reindex rebuilds
from the filesystem — the same trade the schema-ahead branch directly above
already resolves in favour of starting, and its comment says so.
Only genuine SQLite corruption takes the branch;
NoteCorruptiondecides, and itis asked once before the switch because it writes the marker as a side effect. A
transient open failure still ends startup rather than discarding a database that
was fine. A downgrade and a damaged file both end in a rebuild, but "this version
is older than the one that last ran" is misleading when nobody changed versions,
so the corruption notice names the damage and points at the storage instead.
ScanSkipInternalSymlinksdid nothing on MiSTerThe walk decided symlink-ness from the readdir dirent type alone. Linux's exFAT
driver returns
DT_REGfor symlinks while reporting them correctly throughlstat, so on MiSTer — whose/media/fatis exFAT — neither the excludeddirectory skip (#1294) nor the alias skip (#1351) could ever run.
Measured before the change: a walk over a tree of 88 symlinks reported
symlinksEncountered 0, and a single link aliasing an already-indexed ROM tookGenesis from 708 to 709 media, indexing the alias as a second copy of the same
file.
Filesystems are asked once per scan root rather than per entry, and only the FAT
family answers no, so every filesystem that already reports the type keeps the
walk exactly as it was. Where the answer is no, a non-directory entry costs one
plain
lstat— not the timeout-wrapped kind, which stays on the symlink branchesthat only a real link reaches. Directories are never
lstated.walk_skipdir_test.gopins the assumption the alias branch rests on: it returnsfilepath.SkipDirfor a file, and underfilepath.WalkDirthat would drop everyremaining entry in the containing directory, taking real media sitting beside
organizer output with it. fastwalk does not behave that way, and now a test says
so.
Scraped artwork reported no cover until a restart
media.searchandmedia.historyanswerhasCoverfrom an in-memory coveravailability index. A scrape writes image properties through
ApplyScrapeResult,whose post-commit hook recorded the affected systems for thumbnail invalidation —
a different cache. Nothing dropped the cover index, so it kept answering from the
state it was built in.
Observed on the device: the mister-docs scraper matched 5 titles and wrote
image-boxartproperties for all of them,media.searchreportedhasCover falsefor every one, and restarting Core flipped them all to true withnothing else changing.
The clear goes in
recordScrapeImageChanges, which already returns early when awrite touched no image properties and already runs after the commit on both
ApplyScrapeResultandApplyScrapeResults, so an ordinary metadata-only scrapepays nothing.
SteamOS never returned the unrecoverable exit status
#1335 gave startup failures a person has to resolve their own exit status and
taught the service units to decline restarting on it.
cmd/linuxandcmd/replayosmap the error throughcli.ExitCodeFor;cmd/steamosstillexited 1 for everything, while installing the same unit — through
pkg/platforms/linux/installer— that carriesRestartPreventExitStatus=78.A schema-ahead user database on a Steam Deck therefore still got the restart loop
the change was written to stop. The panic handler keeps exiting 1 deliberately.
One test already ties the sentinel to the status and another ties the status to
the unit files; nothing checked that the entrypoints installing those units
return it. The new test closes that, and fails on the old
cmd/steamos.Test gap: the 48 kHz resampler bypass
#1249 added
streamerAtTargetSampleRateso a source already at the output rateis handed straight through instead of being wrapped in a resampler. Nothing
referenced it from a test, so neither branch was exercised: a regression that
always resampled would cost work per sample on the devices with the least to
spare, and one that never resampled would play every other rate at the wrong
pitch. Both fail silently. 192 kHz is covered because that is the rate of the
bundled feedback sounds, which is the path a stock install runs.
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