Origin Private File System

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Full Title or Meme

File systems that are only available to web sites from a common origin as that is defined, is called an Origin Private File System (OPFS).


Origin Private File System (OPFS) on Android

Contact emails 'Daseul Lee' Sep 21, 2022, 12:10 PM dslee@google.com

Specification https://wicg.github.io/file-system-access/#sandboxed-filesystem

Design docs https://web.dev/file-system-access/#accessing-the-origin-private-file-system

Summary = Enable the Origin Private File System (OPFS) part of File System Access API on Android. This includes all of the File System Access (FSA) API surface, minus show*Picker() methods and Drag-and-Drop API integration.

With FSA API on OPFS, a site can access its per-origin, private file system and are able to perform file operations via `FileSystemSyncAccessHandle` with improved performance. The original API, including both OPFS and non-OPFS, was shipped in M86 for desktop, and the extension with SyncAccessHandle was shipped in M102.

TAG review = This API has been shipped on Windows, Mac, Linux and Chrome OS, with two parts. The API to be shipped on Android is the same, thus relying on the previously completed TAG reviews:

TAG review status Completed


Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications? = No, it does not change any existing APIs but to enable a new one.

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)? Yes

This feature was initially launched on desktop, and this proposal includes Android Chrome and Android WebView.

Flag name: FileSystemAccessOriginPrivate

Tracking bug https://bugs.chromium.org/p/chromium/issues/detail?id=1354273

Anticipated spec changes No spec changes. This API has shipped on other platforms, and the proposal is to enable the existing API on Android.

Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5079634203377664


LGTM1 To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAL5BFfVRNiZN7KnJEmPsdtq4kJzZZ%3DKSdUUjLSEAm7e92U30Cg%

'Daseul Lee' via blink-dev

Thanks for the review! WPT is no longer available to run on Android. It looks like there is some coverage for Drag-and-Drop, but as Marijn mentioned, it doesn't

To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/ded412c8-0757-4446-b364-0b7d52a25a90n%40chromium.org.