Move VM callback to vmclient

Instead of having clients directly register a callback with VS,
implement a Rust level callback interface in vmclient. This saves an
extra binder call on each notification, a bunch of boilerplate code,
and allows us to provide a slightly better interface (e.g. we can use
the Rust DeathReason enum, as elsewhere in vmclient, for instantly
better logging).

I also replaced all our usages of <some_interface>::binder::{...} with
direct access to binder::{...}. That makes it clearer what depends on
the interface itself and what is just generic binder code. I realise
this should be a separate change, but I only realised that after doing
bits of both.

Test: composd_cmd test-compile, observe logs (on both success & failure)
Test: atest -b (to make sure all our tests build)
Test: Presubmits
Change-Id: Iceda8d7b8f8008f9d7a2c51106c2794f09bb378e
27 files changed
tree: 86d28a5dc3552139bbb28926ca87718d85223f0c
  1. .prebuilt_info/
  2. apex/
  3. apkdmverity/
  4. authfs/
  5. avmd/
  6. compos/
  7. demo/
  8. docs/
  9. javalib/
  10. launcher/
  11. libs/
  12. microdroid/
  13. microdroid_manager/
  14. pvmfw/
  15. rialto/
  16. tests/
  17. virtualizationservice/
  18. vm/
  19. vmbase/
  20. vmclient/
  21. zipfuse/
  22. .clang-format
  23. .gitignore
  24. Android.bp
  25. OWNERS
  26. PREUPLOAD.cfg
  27. README.md
  28. TEST_MAPPING
README.md

Virtualization

This repository contains userspace services related to running virtual machines on Android, especially protected virtual machines. See the getting started documentation and Microdroid README for more information.