Add a property to rust_ffi targets to exclude them from APEXes.

This is a temporary measure until stubs are properly supported by rust_ffi targets.

Bug: 361441210
Bug: 362509506
Change-Id: Ieabd4e3abf442de660f39ec6c5776f5832b25e14
Test: manual

apex/apex.go

@@ -2230,6 +2230,10 @@ func (a *apexBundle) depVisitor(vctx *visitorContext, ctx android.ModuleContext,
 			addAconfigFiles(vctx, ctx, child)
 			return true // track transitive dependencies
 		} else if rm, ok := child.(*rust.Module); ok {
+			if !android.IsDepInSameApex(ctx, am, am) {
+				return false
+			}
+
 			af := apexFileForRustLibrary(ctx, rm)
 			af.transitiveDep = true
 			vctx.filesInfo = append(vctx.filesInfo, af)
@@ -2249,6 +2253,10 @@ func (a *apexBundle) depVisitor(vctx *visitorContext, ctx android.ModuleContext,
 		}
 	} else if rust.IsDylibDepTag(depTag) {
 		if rustm, ok := child.(*rust.Module); ok && rustm.IsInstallableToApex() {
+			if !android.IsDepInSameApex(ctx, am, am) {
+				return false
+			}
+
 			af := apexFileForRustLibrary(ctx, rustm)
 			af.transitiveDep = true
 			vctx.filesInfo = append(vctx.filesInfo, af)

rust/library.go

@@ -70,6 +70,10 @@ type LibraryCompilerProperties struct {
 
 	// Whether this library is part of the Rust toolchain sysroot.
 	Sysroot *bool
+
+	// Exclude this rust_ffi target from being included in APEXes.
+	// TODO(b/362509506): remove this once stubs are properly supported by rust_ffi targets.
+	Apex_exclude *bool
 }
 
 type LibraryMutatedProperties struct {
@@ -122,6 +126,7 @@ type libraryInterface interface {
 	shared() bool
 	sysroot() bool
 	source() bool
+	apexExclude() bool
 
 	// Returns true if the build options for the module have selected a particular build type
 	buildRlib() bool
@@ -186,6 +191,10 @@ func (library *libraryDecorator) source() bool {
 	return library.MutatedProperties.VariantIsSource
 }
 
+func (library *libraryDecorator) apexExclude() bool {
+	return Bool(library.Properties.Apex_exclude)
+}
+
 func (library *libraryDecorator) buildRlib() bool {
 	return library.MutatedProperties.BuildRlib && BoolDefault(library.Properties.Rlib.Enabled, true)
 }

rust/rust.go

@@ -294,6 +294,15 @@ func (mod *Module) StaticExecutable() bool {
 	return mod.StaticallyLinked()
 }
 
+func (mod *Module) ApexExclude() bool {
+	if mod.compiler != nil {
+		if library, ok := mod.compiler.(libraryInterface); ok {
+			return library.apexExclude()
+		}
+	}
+	return false
+}
+
 func (mod *Module) Object() bool {
 	// Rust has no modules which produce only object files.
 	return false
@@ -1863,6 +1872,10 @@ func (mod *Module) DepIsInSameApex(ctx android.BaseModuleContext, dep android.Mo
 		return false
 	}
 
+	if rustDep, ok := dep.(*Module); ok && rustDep.ApexExclude() {
+		return false
+	}
+
 	return true
 }