libbinder: stability check moved to trans time
Before: stability check done when binder is read from a parcel
After: stability check done when binder is transacted on
Why this change is being made/benefits:
- vendor binders can be used as tokens in system context
- pingBinder/interfaceChain/etc.. can be done on vendor binders in a
system context, so code can generically operate on binders. This is
particularly useful for service manager and dumpstate, which previously
I was going to special-case
- policy on which binders go where is entirely reliant on SELinux
whereas before there were additional runtime restrictions
Cons to this change:
- allowed binders must be determined by context. BpBinder now checks
stability based on kLocalStability. More work would need to be done to
get this working with APEX.
Bug: 136027762
Test: binderStabilityTest
Change-Id: Iff026e81a130dbb8885ca82ec24e69a5768847eb
Merged-In: Iff026e81a130dbb8885ca82ec24e69a5768847eb
diff --git a/libs/binder/tests/Android.bp b/libs/binder/tests/Android.bp
index 05db81e..724cb15 100644
--- a/libs/binder/tests/Android.bp
+++ b/libs/binder/tests/Android.bp
@@ -144,6 +144,7 @@
srcs: [
"binderStabilityTest.cpp",
"IBinderStabilityTest.aidl",
+ "IBinderStabilityTestSub.aidl",
],
shared_libs: [