| commit | f4a994a7face7ec517c6e8932bf963ad2ccb8801 | [log] [tgz] |
|---|---|---|
| author | Karsten Tausche <karsten@fairphone.com> | Fri Jul 07 12:42:19 2023 +0200 |
| committer | Karsten Tausche <karsten@fairphone.com> | Fri Jul 07 12:42:19 2023 +0200 |
| tree | cbc2c6edd44f6cea7f1e05e2f25365a6644b436f | |
| parent | bdf91e9349ff82dbab615ad8da129d50f01e0dda [diff] | |
| parent | 56e52574c78c4b2480bce3f1a9358c05c149584a [diff] |
Merge tag 'android-13.0.0_r52' into int/13/fp3 Android 13.0.0 Release 52 (TQ3A.230605.012) * tag 'android-13.0.0_r52': DO NOT MERGE ANYWHERE: Temporarily disable tests broken by prebuilts Fix extension keys test for 2022-11 on Go Fix SdkExt e2e test to pass on R/S DO NOT MERGE Allow extension version 5 DO NOT MERGE Allow extension version 5 DO NOT MERGE Allow extension version 5 DO NOT MERGE: Backport test changes DO NOT MERGE Allow extension version 4 DO NOT MERGE Allow extension version 4 DO NOT MERGE Allow extension version 4 DO NOT MERGE Update S CTS to allow extension version 3 DO NOT MERGE Update S-v2 CTS to allow extension version 3 Change-Id: I69e73690caeddfa794c5598b1b5dc1cf66ebd8bc
SdkExtensions module is responsible for:
The module is packaged in an apex, com.android.sdkext, and has several components:
bin/derive_classpath: a native binary that runs early in the device boot process. It reads individual classpath configs files from the system and other modules, merges them, and defines the definition of *CLASSPATH environ variables.bin/derive_sdk: native binary that runs early in the device boot process and reads metadata of other modules, to set system properties relating to the extension SDK (for instance build.version.extensions.r).javalib/framework-sdkextension.jar: this is a jar on the bootclasspath that exposes APIs to applications to query the extension SDK level.derive_sdk is a program that reads metadata stored in other apex modules, in the form of binary protobuf files in subpath etc/sdkinfo.pb inside each apex. The structure of this protobuf can be seen here. The exact steps for converting a set of metadata files to actual extension versions is likely to change over time, and should not be depended upon.
The module exposes a java class SdkExtensions in the package android.os.ext. The method getExtensionVersion(int) can be used to read the version of a particular sdk extension, e.g. getExtensionVersion(Build.VERSION_CODES.R).
derive_classpath service reads and merges individual config files in the /system/etc/classpaths/ and /apex/*/etc/classpaths. Each config stores protobuf message from classpaths.proto in a proto binary format. Exact merging algorithm that determines the order of the classpath entries is described in derive_classpath.cpp and may change over time.
An extension is a way to group a set of modules so that they are versioned together. We currently define a new extension for every Android SDK level that introduces new modules. Every module shipped in previous versions are also part of the new extension. For example, all the R modules are part of both the R extensions and the S extensions.
The steps to define a new extension are:
derive_sdk.cpp by:GetSdkLevel with the new enum setderive_sdk_test.cpp verifying the new extensions workSdkExtensions.getExtensionVersion API support the new extensions.