`navigator.storage.getDirectory()` fails in nested workers with an `InvalidStateError`

• Component: New Bugs
• Status: RESOLVED FIXED

[Thomas Steiner]

Created attachment 465914 [details]
Safari

1. Go to https://opfs-in-subworker.glitch.me/ in Chrome or Firefox.
2. Open the Console.
3. Note how calls to `navigator.storage.getDirectory()` succeed in the main thread, a worker, and a subworker.
4. Go to https://opfs-in-subworker.glitch.me/ in Safari.
5. Open the Console.
6. Note how calls to `navigator.storage.getDirectory()` succeed in the main thread, a worker, but fail in a subworker with an `InvalidStateError`.

## Console dump from Safari:

[Log] Succeeded in main thread (script.js, line 4)
FileSystemDirectoryHandle kind: "directory" name: "" FileSystemDirectoryHandle Prototype

[Log] Succeeded in worker.js (worker.js, line 4)
FileSystemDirectoryHandle kind: "directory" name: "" FileSystemDirectoryHandle Prototype

[Log] Message from subworker.js: (worker.js, line 12)
Object error: InvalidStateError: The object is in an invalid state. code: 11 message: "The object is in an invalid state." name: "InvalidStateError" Error Prototype message: "Failed in subworker.js InvalidStateError: The object is in an invalid state."
Object Prototype

I believe the problem lies somewhere here: https://github.com/WebKit/WebKit/blob/9da2b02e31a2ba79c73354b04dc59aea0d04bb88/Source/WebCore/Modules/storage/StorageManager.cpp#L138-L141.

[Thomas Steiner]

Created attachment 465915 [details]
Chrome

For comparison, the Console output in Chrome.

[Thomas Steiner]

(Note that due to https://bugs.webkit.org/show_bug.cgi?id=255402 I had to `postMessage()` any logs from subworker.js to worker.js to see anything.)

[Karl Dubost]

I wonder if it's related to 

https://searchfox.org/wubkat/rev/54dda9907c94c02afdb0d800bf6881f8ad591851/Source/WebCore/Modules/filesystemaccess/WorkerFileSystemStorageConnection.cpp#142-160

[Radar WebKit Bug Importer]

<rdar://problem/108069396>

[Sihui Liu]

Pull request: https://github.com/WebKit/WebKit/pull/12833

[EWS]

Committed 263075@main (808b1c7f159a): <https://commits.webkit.org/263075@main>

Reviewed commits have been landed. Closing PR #12833 and removing active labels.