Merge "Do not allow vintf_fragments for modules installed in the filesystem" into main
diff --git a/Android.bp b/Android.bp
index 1219c62..434ee9f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -172,6 +172,9 @@
     name: "system-build.prop",
     stem: "build.prop",
     product_config: ":product_config",
+    footer_files: [
+        ":applied_backported_fixes",
+    ],
     // Currently, only microdroid, Ravenwood, and cf system image can refer to system-build.prop
     visibility: [
         "//build/make/target/product/generic",
diff --git a/android/apex.go b/android/apex.go
index 9277ff3..1bfcf04 100644
--- a/android/apex.go
+++ b/android/apex.go
@@ -224,11 +224,8 @@
 	// run.
 	DirectlyInAnyApex() bool
 
-	// NotInPlatform tells whether or not this module is included in an APEX and therefore
-	// shouldn't be exposed to the platform (i.e. outside of the APEX) directly. A module is
-	// considered to be included in an APEX either when there actually is an APEX that
-	// explicitly has the module as its dependency or the module is not available to the
-	// platform, which indicates that the module belongs to at least one or more other APEXes.
+	// NotInPlatform returns true if the module is not available to the platform due to
+	// apex_available being set and not containing "//apex_available:platform".
 	NotInPlatform() bool
 
 	// Tests if this module could have APEX variants. Even when a module type implements
@@ -291,14 +288,6 @@
 	// See ApexModule.DirectlyInAnyApex()
 	DirectlyInAnyApex bool `blueprint:"mutated"`
 
-	// AnyVariantDirectlyInAnyApex is true in the primary variant of a module if _any_ variant
-	// of the module is directly in any apex. This includes host, arch, asan, etc. variants. It
-	// is unused in any variant that is not the primary variant. Ideally this wouldn't be used,
-	// as it incorrectly mixes arch variants if only one arch is in an apex, but a few places
-	// depend on it, for example when an ASAN variant is created before the apexMutator. Call
-	// this after apex.apexMutator is run.
-	AnyVariantDirectlyInAnyApex bool `blueprint:"mutated"`
-
 	// See ApexModule.NotAvailableForPlatform()
 	NotAvailableForPlatform bool `blueprint:"mutated"`
 
@@ -428,7 +417,7 @@
 
 // Implements ApexModule
 func (m *ApexModuleBase) NotInPlatform() bool {
-	return m.ApexProperties.AnyVariantDirectlyInAnyApex || !m.AvailableFor(AvailableToPlatform)
+	return !m.AvailableFor(AvailableToPlatform)
 }
 
 // Implements ApexModule
@@ -802,22 +791,6 @@
 		}
 		return false
 	})
-
-	if base.ApexProperties.DirectlyInAnyApex {
-		// Variants of a module are always visited sequentially in order, so it is safe to
-		// write to another variant of this module. For a BottomUpMutator the
-		// PrimaryModule() is visited first and FinalModule() is visited last.
-		mctx.FinalModule().(ApexModule).apexModuleBase().ApexProperties.AnyVariantDirectlyInAnyApex = true
-	}
-
-	// If this is the FinalModule (last visited module) copy
-	// AnyVariantDirectlyInAnyApex to all the other variants
-	if mctx.IsFinalModule(am) {
-		mctx.VisitAllModuleVariants(func(variant Module) {
-			variant.(ApexModule).apexModuleBase().ApexProperties.AnyVariantDirectlyInAnyApex =
-				base.ApexProperties.AnyVariantDirectlyInAnyApex
-		})
-	}
 }
 
 // ApexMembership tells how a module became part of an APEX.
diff --git a/android/build_prop.go b/android/build_prop.go
index cda56f1..2f71bc0 100644
--- a/android/build_prop.go
+++ b/android/build_prop.go
@@ -15,6 +15,8 @@
 package android
 
 import (
+	"fmt"
+
 	"github.com/google/blueprint/proptools"
 )
 
@@ -173,7 +175,16 @@
 	postProcessCmd.Text(outputFilePath.String())
 	postProcessCmd.Flags(p.properties.Block_list)
 
-	rule.Command().Text("echo").Text(proptools.NinjaAndShellEscape("# end of file")).FlagWithArg(">> ", outputFilePath.String())
+	for _, footer := range p.properties.Footer_files {
+		path := PathForModuleSrc(ctx, footer)
+		rule.appendText(outputFilePath, "####################################")
+		rule.appendTextf(outputFilePath, "# Adding footer from %v", footer)
+		rule.appendTextf(outputFilePath, "# with path %v", path)
+		rule.appendText(outputFilePath, "####################################")
+		rule.Command().Text("cat").FlagWithInput("", path).FlagWithArg(">> ", outputFilePath.String())
+	}
+
+	rule.appendText(outputFilePath, "# end of file")
 
 	rule.Build(ctx.ModuleName(), "generating build.prop")
 
@@ -184,6 +195,14 @@
 	p.outputFilePath = outputFilePath
 }
 
+func (r *RuleBuilder) appendText(path ModuleOutPath, text string) {
+	r.Command().Text("echo").Text(proptools.NinjaAndShellEscape(text)).FlagWithArg(">> ", path.String())
+}
+
+func (r *RuleBuilder) appendTextf(path ModuleOutPath, format string, a ...any) {
+	r.appendText(path, fmt.Sprintf(format, a...))
+}
+
 func (p *buildPropModule) AndroidMkEntries() []AndroidMkEntries {
 	return []AndroidMkEntries{{
 		Class:      "ETC",
diff --git a/android/config.go b/android/config.go
index 27d3b87..94285f8 100644
--- a/android/config.go
+++ b/android/config.go
@@ -1834,6 +1834,10 @@
 	return Bool(c.productVariables.CompressedApex) && !c.UnbundledBuildApps()
 }
 
+func (c *config) DefaultApexPayloadType() string {
+	return StringDefault(c.productVariables.DefaultApexPayloadType, "ext4")
+}
+
 func (c *config) UseSoongSystemImage() bool {
 	return Bool(c.productVariables.UseSoongSystemImage)
 }
diff --git a/android/module_context.go b/android/module_context.go
index 2014907..ae7b54f 100644
--- a/android/module_context.go
+++ b/android/module_context.go
@@ -831,6 +831,11 @@
 }
 
 func (m *moduleContext) SetOutputFiles(outputFiles Paths, tag string) {
+	for _, outputFile := range outputFiles {
+		if outputFile == nil {
+			panic("outputfiles cannot be nil")
+		}
+	}
 	if tag == "" {
 		if len(m.outputFiles.DefaultOutputFiles) > 0 {
 			m.ModuleErrorf("Module %s default OutputFiles cannot be overwritten", m.ModuleName())
diff --git a/android/packaging.go b/android/packaging.go
index e71d983..dcd8844 100644
--- a/android/packaging.go
+++ b/android/packaging.go
@@ -410,9 +410,9 @@
 	return true
 }
 
-// highPriorityDepTag provides default implementation of HighPriorityPackagingItem interface.
 type highPriorityDepTag struct {
-	blueprint.DependencyTag
+	blueprint.BaseDependencyTag
+	PackagingItemAlwaysDepTag
 }
 
 // See PackageModule.AddDeps
@@ -433,7 +433,7 @@
 		}
 		depTagToUse := depTag
 		if highPriority {
-			depTagToUse = highPriorityDepTag{depTag}
+			depTagToUse = highPriorityDepTag{}
 		}
 
 		ctx.AddFarVariationDependencies(targetVariation, depTagToUse, dep)
diff --git a/android/prebuilt_test.go b/android/prebuilt_test.go
index 5e4af0b..b90ef3b 100644
--- a/android/prebuilt_test.go
+++ b/android/prebuilt_test.go
@@ -508,11 +508,10 @@
 }
 
 func (p *prebuiltModule) GenerateAndroidBuildActions(ctx ModuleContext) {
-	var src Path
 	if len(p.properties.Srcs) >= 1 {
-		src = p.prebuilt.SingleSourcePath(ctx)
+		src := p.prebuilt.SingleSourcePath(ctx)
+		ctx.SetOutputFiles(Paths{src}, "")
 	}
-	ctx.SetOutputFiles(Paths{src}, "")
 }
 
 func (p *prebuiltModule) Prebuilt() *Prebuilt {
diff --git a/android/rule_builder.go b/android/rule_builder.go
index 403c184..a157386 100644
--- a/android/rule_builder.go
+++ b/android/rule_builder.go
@@ -611,6 +611,7 @@
 		nsjailCmd.WriteString(" -m none:/tmp:tmpfs:size=1073741824") // 1GB, should be enough
 		nsjailCmd.WriteString(" -D nsjail_build_sandbox")
 		nsjailCmd.WriteString(" --disable_rlimits")
+		nsjailCmd.WriteString(" --skip_setsid") // ABFS relies on process-groups to track file operations
 		nsjailCmd.WriteString(" -q")
 		nsjailCmd.WriteString(" -- ")
 		nsjailCmd.WriteString("/bin/bash -c ")
diff --git a/android/sbom.go b/android/sbom.go
index 2a5499e..f2b9c0f 100644
--- a/android/sbom.go
+++ b/android/sbom.go
@@ -15,9 +15,7 @@
 package android
 
 import (
-	"io"
 	"path/filepath"
-	"strings"
 
 	"github.com/google/blueprint"
 )
@@ -55,21 +53,7 @@
 	if !ctx.Config().HasDeviceProduct() {
 		return
 	}
-	// Get all METADATA files and add them as implicit input
-	metadataFileListFile := PathForArbitraryOutput(ctx, ".module_paths", "METADATA.list")
-	f, err := ctx.Config().fs.Open(metadataFileListFile.String())
-	if err != nil {
-		panic(err)
-	}
-	b, err := io.ReadAll(f)
-	if err != nil {
-		panic(err)
-	}
-	allMetadataFiles := strings.Split(string(b), "\n")
-	implicits := []Path{metadataFileListFile}
-	for _, path := range allMetadataFiles {
-		implicits = append(implicits, PathForSource(ctx, path))
-	}
+	implicits := []Path{}
 	prodVars := ctx.Config().productVariables
 	buildFingerprintFile := PathForArbitraryOutput(ctx, "target", "product", String(prodVars.DeviceName), "build_fingerprint.txt")
 	implicits = append(implicits, buildFingerprintFile)
diff --git a/android/variable.go b/android/variable.go
index 2d43c6d..7ae9a43 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -408,9 +408,10 @@
 
 	Ndk_abis *bool `json:",omitempty"`
 
-	ForceApexSymlinkOptimization *bool `json:",omitempty"`
-	CompressedApex               *bool `json:",omitempty"`
-	Aml_abis                     *bool `json:",omitempty"`
+	ForceApexSymlinkOptimization *bool   `json:",omitempty"`
+	CompressedApex               *bool   `json:",omitempty"`
+	DefaultApexPayloadType       *string `json:",omitempty"`
+	Aml_abis                     *bool   `json:",omitempty"`
 
 	DexpreoptGlobalConfig *string `json:",omitempty"`
 
@@ -610,7 +611,9 @@
 	CopyImagesForTargetFilesZip    bool   `json:",omitempty"`
 
 	// Boot image stuff
+	BuildingRamdiskImage            bool   `json:",omitempty"`
 	ProductBuildBootImage           bool   `json:",omitempty"`
+	ProductBuildVendorBootImage     string `json:",omitempty"`
 	ProductBuildInitBootImage       bool   `json:",omitempty"`
 	BoardUsesRecoveryAsBoot         bool   `json:",omitempty"`
 	BoardPrebuiltBootimage          string `json:",omitempty"`
@@ -618,6 +621,8 @@
 	BoardBootimagePartitionSize     string `json:",omitempty"`
 	BoardInitBootimagePartitionSize string `json:",omitempty"`
 	BoardBootHeaderVersion          string `json:",omitempty"`
+	TargetKernelPath                string `json:",omitempty"`
+	BoardUsesGenericKernelImage     bool   `json:",omitempty"`
 
 	// Avb (android verified boot) stuff
 	BoardAvbEnable          bool                                `json:",omitempty"`
diff --git a/apex/aconfig_test.go b/apex/aconfig_test.go
index 76227a9..0eb8ef4 100644
--- a/apex/aconfig_test.go
+++ b/apex/aconfig_test.go
@@ -60,6 +60,7 @@
 					apex_available: [
 						"myapex",
 					],
+					compile_dex: true,
 				}
 				aconfig_declarations {
 					name: "my_aconfig_declarations_foo",
@@ -339,6 +340,7 @@
 					apex_available: [
 						"myapex",
 					],
+					compile_dex: true,
 				}
 				aconfig_declarations {
 					name: "my_aconfig_declarations_foo",
@@ -761,6 +763,7 @@
 					apex_available: [
 						"myapex",
 					],
+					compile_dex: true,
 				}
 				java_library {
 					name: "my_java_library_foo",
diff --git a/apex/apex.go b/apex/apex.go
index dc24df3..91d01b0 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1752,7 +1752,8 @@
 }
 
 func (a *apexBundle) setPayloadFsType(ctx android.ModuleContext) {
-	switch proptools.StringDefault(a.properties.Payload_fs_type, ext4FsType) {
+	defaultFsType := ctx.Config().DefaultApexPayloadType()
+	switch proptools.StringDefault(a.properties.Payload_fs_type, defaultFsType) {
 	case ext4FsType:
 		a.payloadFsType = ext4
 	case f2fsFsType:
diff --git a/apex/apex_test.go b/apex/apex_test.go
index d0494d6..5b5fe5f 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -495,6 +495,7 @@
 				"//apex_available:platform",
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		dex_import {
@@ -664,6 +665,7 @@
 			sdk_version: "none",
 			system_modules: "none",
 			apex_available: [ "myapex" ],
+			compile_dex: true,
 		}
 
 		android_app {
@@ -2035,6 +2037,7 @@
 			apex_available: [ "myapex" ],
 			sdk_version: "current",
 			min_sdk_version: "S", // should be okay
+			compile_dex: true,
 		}
 	`,
 		android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
@@ -2584,6 +2587,7 @@
 				"myapex",
 			],
 			min_sdk_version: "30",
+			compile_dex: true,
 		}
 	`)
 
@@ -2611,6 +2615,7 @@
 			// Compile against core API surface
 			sdk_version: "core_current",
 			min_sdk_version: "30",
+			compile_dex: true,
 		}
 	`)
 
@@ -2658,6 +2663,7 @@
 			],
 			apex_available: ["myapex"],
 			min_sdk_version: "29",
+			compile_dex: true,
 		}
 
 		java_library {
@@ -2737,6 +2743,7 @@
 					srcs: ["foo/bar/MyClass.java"],
 					sdk_version: "test_current",
 					apex_available: ["myapex"],
+					compile_dex: true,
 				}
 			`,
 		},
@@ -2761,6 +2768,7 @@
 					sdk_version: "current",
 					apex_available: ["myapex"],
 					min_sdk_version: "29",
+					compile_dex: true,
 				}
 			`,
 		},
@@ -2784,6 +2792,7 @@
 					srcs: ["foo/bar/MyClass.java"],
 					sdk_version: "test_current",
 					apex_available: ["myapex"],
+					compile_dex: true,
 				}
 			`,
 		},
@@ -2807,6 +2816,7 @@
 					srcs: ["foo/bar/MyClass.java"],
 					sdk_version: "core_platform",
 					apex_available: ["myapex"],
+					compile_dex: true,
 				}
 			`,
 			preparer: java.FixtureUseLegacyCorePlatformApi("myjar-uses-legacy"),
@@ -2835,6 +2845,7 @@
 					sdk_version: "current",
 					apex_available: ["myapex"],
 					static_libs: ["transitive-jar"],
+					compile_dex: true,
 				}
 				java_library {
 					name: "transitive-jar",
@@ -5913,6 +5924,7 @@
 			system_modules: "none",
 			enabled: false,
 			apex_available: ["myapex"],
+			compile_dex: true,
 		}
 	`)
 }
@@ -7525,6 +7537,7 @@
 			apex_available: ["myapex"],
 			sdk_version: "none",
 			system_modules: "none",
+			compile_dex: true,
 		}
 
 		java_library {
@@ -7534,6 +7547,7 @@
 			apex_available: ["myapex"],
 			sdk_version: "none",
 			system_modules: "none",
+			compile_dex: true,
 		}
 
 		prebuilt_apis {
@@ -7643,6 +7657,7 @@
 			apex_available: ["myapex"],
 			sdk_version: "none",
 			system_modules: "none",
+			compile_dex: true,
 		}
 `),
 			"source/a.java":          nil,
@@ -7664,6 +7679,7 @@
 			public: {
 				enabled: true,
 			},
+			compile_dex: true,
 		}
 `),
 			"prebuilt/a.jar": nil,
@@ -7680,6 +7696,7 @@
 			public: {
 				jars: ["a.jar"],
 			},
+			compile_dex: true,
 		}
 `),
 		}), withFiles(filesForSdkLibrary),
@@ -7758,6 +7775,7 @@
 			sdk_version: "none",
 			system_modules: "none",
 			apex_available: [ "myapex" ],
+			compile_dex: true,
 		}
 
 		// Make sure that a preferred prebuilt does not affect the apex contents.
@@ -7997,6 +8015,7 @@
 				"//apex_available:platform",
 			],
 			min_sdk_version: "33",
+			compile_dex: true,
 		}
 
 		java_library {
@@ -8605,6 +8624,7 @@
 					apex_available: ["myapex"],
 					sdk_version: "none",
 					system_modules: "none",
+					compile_dex: true,
 				}
 				java_library {
 					name: "nonbcp_lib2",
@@ -8613,6 +8633,7 @@
 					permitted_packages: ["a.b"],
 					sdk_version: "none",
 					system_modules: "none",
+					compile_dex: true,
 				}
 				apex {
 					name: "myapex",
@@ -8638,6 +8659,7 @@
 					permitted_packages: ["foo.bar"],
 					sdk_version: "none",
 					system_modules: "none",
+					compile_dex: true,
 				}
 				java_library {
 					name: "bcp_lib2",
@@ -8646,6 +8668,7 @@
 					permitted_packages: ["foo.bar", "bar.baz"],
 					sdk_version: "none",
 					system_modules: "none",
+					compile_dex: true,
 				}
 				apex {
 					name: "myapex",
@@ -8676,6 +8699,7 @@
 					sdk_version: "none",
 					min_sdk_version: "29",
 					system_modules: "none",
+					compile_dex: true,
 				}
 				java_library {
 					name: "bcp_lib_unrestricted",
@@ -8685,6 +8709,7 @@
 					sdk_version: "none",
 					min_sdk_version: "29",
 					system_modules: "none",
+					compile_dex: true,
 				}
 				apex {
 					name: "myapex",
@@ -9834,6 +9859,7 @@
 			},
 			sdk_version: "current",
 			min_sdk_version: "29",
+			compile_dex: true,
 		}
 		`
 	fs := android.MockFS{
@@ -10268,6 +10294,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		java_library {
@@ -10279,6 +10306,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		aconfig_declarations {
@@ -10365,6 +10393,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		cc_library {
@@ -10691,6 +10720,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		java_library {
@@ -10702,6 +10732,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		aconfig_declarations {
@@ -10776,6 +10807,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		java_library {
@@ -10787,6 +10819,7 @@
 			apex_available: [
 				"myapex",
 			],
+			compile_dex: true,
 		}
 
 		aconfig_declarations {
@@ -11469,6 +11502,7 @@
 			apex_available: ["com.android.apex30"],
 			min_sdk_version: "30",
 			sdk_version: "current",
+			compile_dex: true,
 		}
 
 		override_apex {
@@ -11760,6 +11794,7 @@
 				"com.android.foo30",
 			],
 			sdk_version: "core_current",
+			compile_dex: true,
 		}
 
 		java_library {
diff --git a/apex/container_test.go b/apex/container_test.go
index d1dfb9c..395793f 100644
--- a/apex/container_test.go
+++ b/apex/container_test.go
@@ -15,10 +15,11 @@
 package apex
 
 import (
-	"android/soong/android"
-	"android/soong/java"
 	"fmt"
 	"testing"
+
+	"android/soong/android"
+	"android/soong/java"
 )
 
 var checkContainerMatch = func(t *testing.T, name string, container string, expected bool, actual bool) {
@@ -329,6 +330,7 @@
 			],
 			min_sdk_version: "30",
 			sdk_version: "current",
+			compile_dex: true,
 		}
 	`)
 
diff --git a/cc/binary.go b/cc/binary.go
index 2ac9a45..4b77bea 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -505,7 +505,7 @@
 	// The original path becomes a symlink to the corresponding file in the
 	// runtime APEX.
 	translatedArch := ctx.Target().NativeBridge == android.NativeBridgeEnabled
-	if InstallToBootstrap(ctx.baseModuleName(), ctx.Config()) && !ctx.Host() && ctx.directlyInAnyApex() &&
+	if InstallToBootstrap(ctx.baseModuleName(), ctx.Config()) && !ctx.Host() && !ctx.isSdkVariant() &&
 		!translatedArch && ctx.apexVariationName() == "" && !ctx.inRamdisk() && !ctx.inRecovery() &&
 		!ctx.inVendorRamdisk() {
 
diff --git a/cc/cc.go b/cc/cc.go
index 76d01a5..bd91964 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -548,7 +548,6 @@
 	apexSdkVersion() android.ApiLevel
 	bootstrap() bool
 	nativeCoverage() bool
-	directlyInAnyApex() bool
 	isPreventInstall() bool
 	isCfiAssemblySupportEnabled() bool
 	getSharedFlags() *SharedFlags
@@ -1692,10 +1691,6 @@
 	return ctx.mod.nativeCoverage()
 }
 
-func (ctx *moduleContextImpl) directlyInAnyApex() bool {
-	return ctx.mod.DirectlyInAnyApex()
-}
-
 func (ctx *moduleContextImpl) isPreventInstall() bool {
 	return ctx.mod.Properties.PreventInstall
 }
diff --git a/cc/config/global.go b/cc/config/global.go
index 36690d6..6984ea4 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -290,8 +290,6 @@
 		"-Wno-error=deprecated",          // in external/googletest/googletest
 		// Disabling until the warning is fixed in libc++abi header files b/366180429
 		"-Wno-deprecated-dynamic-exception-spec",
-		// New warnings to be fixed after clang-r475365
-		"-Wno-error=enum-constexpr-conversion", // http://b/243964282
 		// New warnings to be fixed after clang-r522817
 		"-Wno-error=invalid-offsetof",
 		"-Wno-error=thread-safety-reference-return",
diff --git a/cc/image.go b/cc/image.go
index ee40483..9766af3 100644
--- a/cc/image.go
+++ b/cc/image.go
@@ -179,9 +179,6 @@
 	// SnapshotVersion returns the snapshot version for this module.
 	SnapshotVersion(mctx android.ImageInterfaceContext) string
 
-	// SdkVersion returns the SDK version for this module.
-	SdkVersion() string
-
 	// ExtraVariants returns the list of extra variants this module requires.
 	ExtraVariants() []string
 
@@ -370,7 +367,7 @@
 		if m.HasProductVariant() {
 			productVariantNeeded = true
 		}
-	} else if vendorSpecific && m.SdkVersion() == "" {
+	} else if vendorSpecific {
 		// This will be available in /vendor (or /odm) only
 		vendorVariantNeeded = true
 	} else {
@@ -380,7 +377,7 @@
 		coreVariantNeeded = true
 	}
 
-	if coreVariantNeeded && productSpecific && m.SdkVersion() == "" {
+	if coreVariantNeeded && productSpecific {
 		// The module has "product_specific: true" that does not create core variant.
 		coreVariantNeeded = false
 		productVariantNeeded = true
diff --git a/cc/library.go b/cc/library.go
index 4ce506e..23ee9b1 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -656,7 +656,7 @@
 	// However, having this distinction helps guard accidental
 	// promotion or demotion of API and also helps the API review process b/191371676
 	var flag string
-	if ctx.Module().(android.ApexModule).NotInPlatform() {
+	if ctx.notInPlatform() {
 		flag = "--apex"
 	} else {
 		flag = "--systemapi"
@@ -740,6 +740,7 @@
 	hasLLNDKStubs() bool
 	hasLLNDKHeaders() bool
 	hasVendorPublicLibrary() bool
+	isLLNDKMovedToApex() bool
 }
 
 var _ libraryInterface = (*libraryDecorator)(nil)
@@ -1750,21 +1751,17 @@
 
 func (library *libraryDecorator) install(ctx ModuleContext, file android.Path) {
 	if library.shared() {
-		if library.hasStubsVariants() && !ctx.Host() && ctx.directlyInAnyApex() {
+		translatedArch := ctx.Target().NativeBridge == android.NativeBridgeEnabled
+		if library.hasStubsVariants() && !ctx.Host() && !ctx.isSdkVariant() &&
+			InstallToBootstrap(ctx.baseModuleName(), ctx.Config()) && !library.buildStubs() &&
+			!translatedArch && !ctx.inRamdisk() && !ctx.inVendorRamdisk() && !ctx.inRecovery() {
 			// Bionic libraries (e.g. libc.so) is installed to the bootstrap subdirectory.
 			// The original path becomes a symlink to the corresponding file in the
 			// runtime APEX.
-			translatedArch := ctx.Target().NativeBridge == android.NativeBridgeEnabled
-			if InstallToBootstrap(ctx.baseModuleName(), ctx.Config()) && !library.buildStubs() &&
-				!translatedArch && !ctx.inRamdisk() && !ctx.inVendorRamdisk() && !ctx.inRecovery() {
-				if ctx.Device() {
-					library.installSymlinkToRuntimeApex(ctx, file)
-				}
-				library.baseInstaller.subDir = "bootstrap"
+			if ctx.Device() {
+				library.installSymlinkToRuntimeApex(ctx, file)
 			}
-		} else if ctx.directlyInAnyApex() && ctx.IsLlndk() && !isBionic(ctx.baseModuleName()) {
-			// Skip installing LLNDK (non-bionic) libraries moved to APEX.
-			ctx.Module().HideFromMake()
+			library.baseInstaller.subDir = "bootstrap"
 		}
 
 		library.baseInstaller.install(ctx, file)
@@ -1848,6 +1845,11 @@
 	return Bool(library.Properties.Llndk.Llndk_headers)
 }
 
+// isLLNDKMovedToApex returns true if this cc_library module sets the llndk.moved_to_apex property.
+func (library *libraryDecorator) isLLNDKMovedToApex() bool {
+	return Bool(library.Properties.Llndk.Moved_to_apex)
+}
+
 // hasVendorPublicLibrary returns true if this cc_library module has a variant that will build
 // vendor public library stubs.
 func (library *libraryDecorator) hasVendorPublicLibrary() bool {
diff --git a/cc/llndk_library.go b/cc/llndk_library.go
index c7950f9..162dd54 100644
--- a/cc/llndk_library.go
+++ b/cc/llndk_library.go
@@ -57,17 +57,18 @@
 	// if true, make this module available to provide headers to other modules that set
 	// llndk.symbol_file.
 	Llndk_headers *bool
+
+	// moved_to_apex marks this module has having been distributed through an apex module.
+	Moved_to_apex *bool
 }
 
 func makeLlndkVars(ctx android.MakeVarsContext) {
-	// Make uses LLNDK_MOVED_TO_APEX_LIBRARIES to avoid installing libraries on /system if
-	// they been moved to an apex.
+	// Make uses LLNDK_MOVED_TO_APEX_LIBRARIES to generate the linker config.
 	movedToApexLlndkLibraries := make(map[string]bool)
 	ctx.VisitAllModules(func(module android.Module) {
 		if library := moduleLibraryInterface(module); library != nil && library.hasLLNDKStubs() {
-			// Skip bionic libs, they are handled in different manner
-			name := library.implementationModuleName(module.(*Module).BaseModuleName())
-			if module.(android.ApexModule).DirectlyInAnyApex() && !isBionic(name) {
+			if library.isLLNDKMovedToApex() {
+				name := library.implementationModuleName(module.(*Module).BaseModuleName())
 				movedToApexLlndkLibraries[name] = true
 			}
 		}
diff --git a/cc/sanitize.go b/cc/sanitize.go
index f0d7343..d8d8c7a 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -1504,9 +1504,6 @@
 
 		if Bool(sanProps.Memtag_globals) {
 			sanitizers = append(sanitizers, "memtag-globals")
-			// TODO(mitchp): For now, enable memtag-heap with memtag-globals because the linker
-			// isn't new enough (https://reviews.llvm.org/differential/changeset/?ref=4243566).
-			sanitizers = append(sanitizers, "memtag-heap")
 		}
 
 		if Bool(sanProps.Fuzzer) {
diff --git a/cmd/find_input_delta/find_input_delta/main.go b/cmd/find_input_delta/find_input_delta/main.go
index 6b657ea..a864584 100644
--- a/cmd/find_input_delta/find_input_delta/main.go
+++ b/cmd/find_input_delta/find_input_delta/main.go
@@ -85,4 +85,11 @@
 	if err = file_list.Format(os.Stdout, template); err != nil {
 		panic(err)
 	}
+
+	metrics_file := os.Getenv("SOONG_METRICS_AGGREGATION_FILE")
+	if metrics_file != "" {
+		if err = file_list.SendMetrics(metrics_file); err != nil {
+			panic(err)
+		}
+	}
 }
diff --git a/cmd/find_input_delta/find_input_delta_lib/Android.bp b/cmd/find_input_delta/find_input_delta_lib/Android.bp
index 95bdba8..ef9c65b 100644
--- a/cmd/find_input_delta/find_input_delta_lib/Android.bp
+++ b/cmd/find_input_delta/find_input_delta_lib/Android.bp
@@ -25,6 +25,7 @@
         "golang-protobuf-runtime-protoimpl",
         "soong-cmd-find_input_delta-proto",
         "soong-cmd-find_input_delta-proto_internal",
+        "android-archive-zip",
         "blueprint-pathtools",
     ],
     srcs: [
diff --git a/cmd/find_input_delta/find_input_delta_lib/file_list.go b/cmd/find_input_delta/find_input_delta_lib/file_list.go
index 23337ad..01242a0 100644
--- a/cmd/find_input_delta/find_input_delta_lib/file_list.go
+++ b/cmd/find_input_delta/find_input_delta_lib/file_list.go
@@ -15,10 +15,15 @@
 package find_input_delta_lib
 
 import (
+	"fmt"
 	"io"
+	"os"
+	"path/filepath"
+	"slices"
 	"text/template"
 
 	fid_exp "android/soong/cmd/find_input_delta/find_input_delta_proto"
+	"google.golang.org/protobuf/encoding/protowire"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -47,28 +52,148 @@
 
 	// The modified files
 	Changes []FileList
+
+	// Map of file_extension:counts
+	ExtCountMap map[string]*FileCounts
+
+	// Total number of added/changed/deleted files.
+	TotalDelta uint32
 }
 
-func (fl FileList) Marshal() (*fid_exp.FileList, error) {
+// The maximum number of files that will be recorded by name.
+var MaxFilesRecorded uint32 = 50
+
+type FileCounts struct {
+	Additions uint32
+	Deletions uint32
+	Changes   uint32
+}
+
+func FileListFactory(name string) *FileList {
+	return &FileList{
+		Name:        name,
+		ExtCountMap: make(map[string]*FileCounts),
+	}
+}
+
+func (fl *FileList) addFile(name string) {
+	fl.Additions = append(fl.Additions, name)
+	fl.TotalDelta += 1
+	ext := filepath.Ext(name)
+	if _, ok := fl.ExtCountMap[ext]; !ok {
+		fl.ExtCountMap[ext] = &FileCounts{}
+	}
+	fl.ExtCountMap[ext].Additions += 1
+}
+
+func (fl *FileList) deleteFile(name string) {
+	fl.Deletions = append(fl.Deletions, name)
+	fl.TotalDelta += 1
+	ext := filepath.Ext(name)
+	if _, ok := fl.ExtCountMap[ext]; !ok {
+		fl.ExtCountMap[ext] = &FileCounts{}
+	}
+	fl.ExtCountMap[ext].Deletions += 1
+}
+
+func (fl *FileList) changeFile(name string, ch *FileList) {
+	fl.Changes = append(fl.Changes, *ch)
+	fl.TotalDelta += 1
+	ext := filepath.Ext(name)
+	if _, ok := fl.ExtCountMap[ext]; !ok {
+		fl.ExtCountMap[ext] = &FileCounts{}
+	}
+	fl.ExtCountMap[ext].Changes += 1
+}
+
+func (fl FileList) ToProto() (*fid_exp.FileList, error) {
+	var count uint32
+	return fl.toProto(&count)
+}
+
+func (fl FileList) toProto(count *uint32) (*fid_exp.FileList, error) {
 	ret := &fid_exp.FileList{
 		Name: proto.String(fl.Name),
 	}
-	if len(fl.Additions) > 0 {
-		ret.Additions = fl.Additions
+	for _, a := range fl.Additions {
+		if *count >= MaxFilesRecorded {
+			break
+		}
+		ret.Additions = append(ret.Additions, a)
+		*count += 1
 	}
 	for _, ch := range fl.Changes {
-		change, err := ch.Marshal()
-		if err != nil {
-			return nil, err
+		if *count >= MaxFilesRecorded {
+			break
+		} else {
+			// Pre-increment to limit what the call adds.
+			*count += 1
+			change, err := ch.toProto(count)
+			if err != nil {
+				return nil, err
+			}
+			ret.Changes = append(ret.Changes, change)
 		}
-		ret.Changes = append(ret.Changes, change)
 	}
-	if len(fl.Deletions) > 0 {
-		ret.Deletions = fl.Deletions
+	for _, d := range fl.Deletions {
+		if *count >= MaxFilesRecorded {
+			break
+		}
+		ret.Deletions = append(ret.Deletions, d)
+	}
+	ret.TotalDelta = proto.Uint32(*count)
+	exts := []string{}
+	for k := range fl.ExtCountMap {
+		exts = append(exts, k)
+	}
+	slices.Sort(exts)
+	for _, k := range exts {
+		v := fl.ExtCountMap[k]
+		ret.Counts = append(ret.Counts, &fid_exp.FileCount{
+			Extension:     proto.String(k),
+			Additions:     proto.Uint32(v.Additions),
+			Deletions:     proto.Uint32(v.Deletions),
+			Modifications: proto.Uint32(v.Changes),
+		})
 	}
 	return ret, nil
 }
 
+func (fl FileList) SendMetrics(path string) error {
+	if path == "" {
+		return fmt.Errorf("No path given")
+	}
+	message, err := fl.ToProto()
+	if err != nil {
+		return err
+	}
+
+	// Marshal the message wrapped in SoongCombinedMetrics.
+	data := protowire.AppendVarint(
+		[]byte{},
+		protowire.EncodeTag(
+			protowire.Number(fid_exp.FieldNumbers_FIELD_NUMBERS_FILE_LIST),
+			protowire.BytesType))
+	size := uint64(proto.Size(message))
+	data = protowire.AppendVarint(data, size)
+	data, err = proto.MarshalOptions{UseCachedSize: true}.MarshalAppend(data, message)
+	if err != nil {
+		return err
+	}
+
+	out, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := out.Close(); err != nil {
+			fmt.Fprintf(os.Stderr, "Failed to close %s: %v\n", path, err)
+		}
+	}()
+	_, err = out.Write(data)
+	return err
+}
+
 func (fl FileList) Format(wr io.Writer, format string) error {
 	tmpl, err := template.New("filelist").Parse(format)
 	if err != nil {
diff --git a/cmd/find_input_delta/find_input_delta_lib/fs.go b/cmd/find_input_delta/find_input_delta_lib/fs.go
index 4a83ed7..09a8aa6 100644
--- a/cmd/find_input_delta/find_input_delta_lib/fs.go
+++ b/cmd/find_input_delta/find_input_delta_lib/fs.go
@@ -15,7 +15,6 @@
 package find_input_delta_lib
 
 import (
-	"io"
 	"io/fs"
 	"os"
 )
@@ -30,14 +29,6 @@
 	ReadFile(path string) ([]byte, error)
 }
 
-type file interface {
-	io.Closer
-	io.Reader
-	io.ReaderAt
-	io.Seeker
-	Stat() (os.FileInfo, error)
-}
-
 // osFS implements fileSystem using the local disk.
 type osFS struct{}
 
diff --git a/cmd/find_input_delta/find_input_delta_lib/internal_state.go b/cmd/find_input_delta/find_input_delta_lib/internal_state.go
index b2ff8c7..2b8c395 100644
--- a/cmd/find_input_delta/find_input_delta_lib/internal_state.go
+++ b/cmd/find_input_delta/find_input_delta_lib/internal_state.go
@@ -18,9 +18,11 @@
 	"errors"
 	"fmt"
 	"io/fs"
+	"regexp"
 	"slices"
 
 	fid_proto "android/soong/cmd/find_input_delta/find_input_delta_proto_internal"
+	"android/soong/third_party/zip"
 	"github.com/google/blueprint/pathtools"
 	"google.golang.org/protobuf/proto"
 )
@@ -57,6 +59,7 @@
 			// If we ever have an easy hash, assign it here.
 		}
 		if inspect_contents {
+			// NOTE: When we find it useful, we can parallelize the file inspection for speed.
 			contents, err := InspectFileContents(input)
 			if err != nil {
 				return ret, err
@@ -70,14 +73,36 @@
 	return ret, nil
 }
 
+// We ignore any suffix digit caused by sharding.
+var InspectExtsZipRegexp = regexp.MustCompile("\\.(jar|apex|apk)[0-9]*$")
+
 // Inspect the file and extract the state of the elements in the archive.
 // If this is not an archive of some sort, nil is returned.
 func InspectFileContents(name string) ([]*fid_proto.PartialCompileInput, error) {
-	// TODO: Actually inspect the contents.
-	fmt.Printf("inspecting contents for %s\n", name)
+	if InspectExtsZipRegexp.Match([]byte(name)) {
+		return inspectZipFileContents(name)
+	}
 	return nil, nil
 }
 
+func inspectZipFileContents(name string) ([]*fid_proto.PartialCompileInput, error) {
+	rc, err := zip.OpenReader(name)
+	if err != nil {
+		return nil, err
+	}
+	ret := []*fid_proto.PartialCompileInput{}
+	for _, v := range rc.File {
+		pci := &fid_proto.PartialCompileInput{
+			Name:      proto.String(v.Name),
+			MtimeNsec: proto.Int64(v.ModTime().UnixNano()),
+			Hash:      proto.String(fmt.Sprintf("%08x", v.CRC32)),
+		}
+		ret = append(ret, pci)
+		// We do not support nested inspection.
+	}
+	return ret, nil
+}
+
 func WriteState(s *fid_proto.PartialCompileInputs, path string) error {
 	data, err := proto.Marshal(s)
 	if err != nil {
@@ -91,9 +116,7 @@
 }
 
 func CompareInputFiles(prior, other []*fid_proto.PartialCompileInput, name string) *FileList {
-	fl := &FileList{
-		Name: name,
-	}
+	fl := FileListFactory(name)
 	PriorMap := make(map[string]*fid_proto.PartialCompileInput, len(prior))
 	// We know that the lists are properly sorted, so we can simply compare them.
 	for _, v := range prior {
@@ -105,17 +128,17 @@
 		otherMap[name] = v
 		if _, ok := PriorMap[name]; !ok {
 			// Added file
-			fl.Additions = append(fl.Additions, name)
+			fl.addFile(name)
 		} else if !proto.Equal(PriorMap[name], v) {
 			// Changed file
-			fl.Changes = append(fl.Changes, *CompareInputFiles(PriorMap[name].GetContents(), v.GetContents(), name))
+			fl.changeFile(name, CompareInputFiles(PriorMap[name].GetContents(), v.GetContents(), name))
 		}
 	}
 	for _, v := range prior {
 		name := v.GetName()
 		if _, ok := otherMap[name]; !ok {
 			// Deleted file
-			fl.Deletions = append(fl.Deletions, name)
+			fl.deleteFile(name)
 		}
 	}
 	return fl
diff --git a/cmd/find_input_delta/find_input_delta_lib/internal_state_test.go b/cmd/find_input_delta/find_input_delta_lib/internal_state_test.go
index 20b8efa..c168d5a 100644
--- a/cmd/find_input_delta/find_input_delta_lib/internal_state_test.go
+++ b/cmd/find_input_delta/find_input_delta_lib/internal_state_test.go
@@ -199,7 +199,7 @@
 			},
 		},
 		{
-			Name:   "one of each",
+			Name:   "one each add modify delete",
 			Target: "foo",
 			Prior: &fid_proto.PartialCompileInputs{
 				InputFiles: []*fid_proto.PartialCompileInput{
@@ -222,11 +222,62 @@
 				Deletions: []string{"file2"},
 			},
 		},
+		{
+			Name:   "interior one each add modify delete",
+			Target: "bar",
+			Prior: &fid_proto.PartialCompileInputs{
+				InputFiles: []*fid_proto.PartialCompileInput{
+					protoFile("file1", 405, "", []*fid_proto.PartialCompileInput{
+						protoFile("innerC", 400, "crc32:11111111", nil),
+						protoFile("innerD", 400, "crc32:44444444", nil),
+					}),
+				},
+			},
+			New: &fid_proto.PartialCompileInputs{
+				InputFiles: []*fid_proto.PartialCompileInput{
+					protoFile("file1", 505, "", []*fid_proto.PartialCompileInput{
+						protoFile("innerA", 400, "crc32:55555555", nil),
+						protoFile("innerC", 500, "crc32:66666666", nil),
+					}),
+				},
+			},
+			Expected: &FileList{
+				Name: "bar",
+				Changes: []FileList{FileList{
+					Name:      "file1",
+					Additions: []string{"innerA"},
+					Changes:   []FileList{FileList{Name: "innerC"}},
+					Deletions: []string{"innerD"},
+				}},
+			},
+		},
 	}
 	for _, tc := range testCases {
 		actual := CompareInternalState(tc.Prior, tc.New, tc.Target)
 		if !tc.Expected.Equal(actual) {
-			t.Errorf("%s: expected %q, actual %q", tc.Name, tc.Expected, actual)
+			t.Errorf("%s: expected %v, actual %v", tc.Name, tc.Expected, actual)
+		}
+	}
+}
+
+func TestCompareInspectExtsZipRegexp(t *testing.T) {
+	testCases := []struct {
+		Name     string
+		Expected bool
+	}{
+		{Name: ".jar", Expected: true},
+		{Name: ".jar5", Expected: true},
+		{Name: ".apex", Expected: true},
+		{Name: ".apex9", Expected: true},
+		{Name: ".apexx", Expected: false},
+		{Name: ".apk", Expected: true},
+		{Name: ".apk3", Expected: true},
+		{Name: ".go", Expected: false},
+	}
+	for _, tc := range testCases {
+		actual := InspectExtsZipRegexp.Match([]byte(tc.Name))
+		if tc.Expected != actual {
+			t.Errorf("%s: expected %v, actual %v", tc.Name, tc.Expected, actual)
 		}
 	}
 }
diff --git a/cmd/find_input_delta/find_input_delta_proto/file_list.pb.go b/cmd/find_input_delta/find_input_delta_proto/file_list.pb.go
index 648ef22..745de2d 100644
--- a/cmd/find_input_delta/find_input_delta_proto/file_list.pb.go
+++ b/cmd/find_input_delta/find_input_delta_proto/file_list.pb.go
@@ -19,7 +19,7 @@
 // 	protoc        v3.21.12
 // source: file_list.proto
 
-package proto
+package find_input_delta_proto
 
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
@@ -35,6 +35,62 @@
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type FieldNumbers int32
+
+const (
+	FieldNumbers_FIELD_NUMBERS_UNSPECIFIED FieldNumbers = 0
+	FieldNumbers_FIELD_NUMBERS_FILE_LIST   FieldNumbers = 1
+)
+
+// Enum value maps for FieldNumbers.
+var (
+	FieldNumbers_name = map[int32]string{
+		0: "FIELD_NUMBERS_UNSPECIFIED",
+		1: "FIELD_NUMBERS_FILE_LIST",
+	}
+	FieldNumbers_value = map[string]int32{
+		"FIELD_NUMBERS_UNSPECIFIED": 0,
+		"FIELD_NUMBERS_FILE_LIST":   1,
+	}
+)
+
+func (x FieldNumbers) Enum() *FieldNumbers {
+	p := new(FieldNumbers)
+	*p = x
+	return p
+}
+
+func (x FieldNumbers) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (FieldNumbers) Descriptor() protoreflect.EnumDescriptor {
+	return file_file_list_proto_enumTypes[0].Descriptor()
+}
+
+func (FieldNumbers) Type() protoreflect.EnumType {
+	return &file_file_list_proto_enumTypes[0]
+}
+
+func (x FieldNumbers) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Do not use.
+func (x *FieldNumbers) UnmarshalJSON(b []byte) error {
+	num, err := protoimpl.X.UnmarshalJSONEnum(x.Descriptor(), b)
+	if err != nil {
+		return err
+	}
+	*x = FieldNumbers(num)
+	return nil
+}
+
+// Deprecated: Use FieldNumbers.Descriptor instead.
+func (FieldNumbers) EnumDescriptor() ([]byte, []int) {
+	return file_file_list_proto_rawDescGZIP(), []int{0}
+}
+
 type FileList struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -46,10 +102,14 @@
 	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
 	// The added files.
 	Additions []string `protobuf:"bytes,2,rep,name=additions" json:"additions,omitempty"`
-	// The deleted files.
-	Deletions []string `protobuf:"bytes,3,rep,name=deletions" json:"deletions,omitempty"`
 	// The changed files.
-	Changes []*FileList `protobuf:"bytes,4,rep,name=changes" json:"changes,omitempty"`
+	Changes []*FileList `protobuf:"bytes,3,rep,name=changes" json:"changes,omitempty"`
+	// The deleted files.
+	Deletions []string `protobuf:"bytes,4,rep,name=deletions" json:"deletions,omitempty"`
+	// Count of files added/changed/deleted.
+	TotalDelta *uint32 `protobuf:"varint,5,opt,name=total_delta,json=totalDelta" json:"total_delta,omitempty"`
+	// Counts by extension.
+	Counts []*FileCount `protobuf:"bytes,6,rep,name=counts" json:"counts,omitempty"`
 }
 
 func (x *FileList) Reset() {
@@ -98,6 +158,13 @@
 	return nil
 }
 
+func (x *FileList) GetChanges() []*FileList {
+	if x != nil {
+		return x.Changes
+	}
+	return nil
+}
+
 func (x *FileList) GetDeletions() []string {
 	if x != nil {
 		return x.Deletions
@@ -105,32 +172,135 @@
 	return nil
 }
 
-func (x *FileList) GetChanges() []*FileList {
+func (x *FileList) GetTotalDelta() uint32 {
+	if x != nil && x.TotalDelta != nil {
+		return *x.TotalDelta
+	}
+	return 0
+}
+
+func (x *FileList) GetCounts() []*FileCount {
 	if x != nil {
-		return x.Changes
+		return x.Counts
 	}
 	return nil
 }
 
+type FileCount struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The file extension
+	Extension *string `protobuf:"bytes,1,opt,name=extension" json:"extension,omitempty"`
+	// Number of added files with this extension.
+	Additions *uint32 `protobuf:"varint,2,opt,name=additions" json:"additions,omitempty"`
+	// Number of modified files with this extension.
+	Modifications *uint32 `protobuf:"varint,3,opt,name=modifications" json:"modifications,omitempty"`
+	// Number of deleted files with this extension.
+	Deletions *uint32 `protobuf:"varint,4,opt,name=deletions" json:"deletions,omitempty"`
+}
+
+func (x *FileCount) Reset() {
+	*x = FileCount{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_file_list_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FileCount) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FileCount) ProtoMessage() {}
+
+func (x *FileCount) ProtoReflect() protoreflect.Message {
+	mi := &file_file_list_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FileCount.ProtoReflect.Descriptor instead.
+func (*FileCount) Descriptor() ([]byte, []int) {
+	return file_file_list_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *FileCount) GetExtension() string {
+	if x != nil && x.Extension != nil {
+		return *x.Extension
+	}
+	return ""
+}
+
+func (x *FileCount) GetAdditions() uint32 {
+	if x != nil && x.Additions != nil {
+		return *x.Additions
+	}
+	return 0
+}
+
+func (x *FileCount) GetModifications() uint32 {
+	if x != nil && x.Modifications != nil {
+		return *x.Modifications
+	}
+	return 0
+}
+
+func (x *FileCount) GetDeletions() uint32 {
+	if x != nil && x.Deletions != nil {
+		return *x.Deletions
+	}
+	return 0
+}
+
 var File_file_list_proto protoreflect.FileDescriptor
 
 var file_file_list_proto_rawDesc = []byte{
 	0x0a, 0x0f, 0x66, 0x69, 0x6c, 0x65, 0x5f, 0x6c, 0x69, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74,
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+	0x62, 0x65, 0x72, 0x73, 0x12, 0x1d, 0x0a, 0x19, 0x46, 0x49, 0x45, 0x4c, 0x44, 0x5f, 0x4e, 0x55,
+	0x4d, 0x42, 0x45, 0x52, 0x53, 0x5f, 0x55, 0x4e, 0x53, 0x50, 0x45, 0x43, 0x49, 0x46, 0x49, 0x45,
+	0x44, 0x10, 0x00, 0x12, 0x1b, 0x0a, 0x17, 0x46, 0x49, 0x45, 0x4c, 0x44, 0x5f, 0x4e, 0x55, 0x4d,
+	0x42, 0x45, 0x52, 0x53, 0x5f, 0x46, 0x49, 0x4c, 0x45, 0x5f, 0x4c, 0x49, 0x53, 0x54, 0x10, 0x01,
+	0x42, 0x3b, 0x5a, 0x39, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e,
+	0x67, 0x2f, 0x63, 0x6d, 0x64, 0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74,
+	0x5f, 0x64, 0x65, 0x6c, 0x74, 0x61, 0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75,
+	0x74, 0x5f, 0x64, 0x65, 0x6c, 0x74, 0x61, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
 }
 
 var (
@@ -145,17 +315,21 @@
 	return file_file_list_proto_rawDescData
 }
 
-var file_file_list_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_file_list_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_file_list_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_file_list_proto_goTypes = []interface{}{
-	(*FileList)(nil), // 0: android.find_input_delta_proto.FileList
+	(FieldNumbers)(0), // 0: android.find_input_delta_proto.FieldNumbers
+	(*FileList)(nil),  // 1: android.find_input_delta_proto.FileList
+	(*FileCount)(nil), // 2: android.find_input_delta_proto.FileCount
 }
 var file_file_list_proto_depIdxs = []int32{
-	0, // 0: android.find_input_delta_proto.FileList.changes:type_name -> android.find_input_delta_proto.FileList
-	1, // [1:1] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
+	1, // 0: android.find_input_delta_proto.FileList.changes:type_name -> android.find_input_delta_proto.FileList
+	2, // 1: android.find_input_delta_proto.FileList.counts:type_name -> android.find_input_delta_proto.FileCount
+	2, // [2:2] is the sub-list for method output_type
+	2, // [2:2] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
 }
 
 func init() { file_file_list_proto_init() }
@@ -176,19 +350,32 @@
 				return nil
 			}
 		}
+		file_file_list_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FileCount); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_file_list_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   1,
+			NumEnums:      1,
+			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_file_list_proto_goTypes,
 		DependencyIndexes: file_file_list_proto_depIdxs,
+		EnumInfos:         file_file_list_proto_enumTypes,
 		MessageInfos:      file_file_list_proto_msgTypes,
 	}.Build()
 	File_file_list_proto = out.File
diff --git a/cmd/find_input_delta/find_input_delta_proto/file_list.proto b/cmd/find_input_delta/find_input_delta_proto/file_list.proto
index d7faca9..7180358 100644
--- a/cmd/find_input_delta/find_input_delta_proto/file_list.proto
+++ b/cmd/find_input_delta/find_input_delta_proto/file_list.proto
@@ -15,7 +15,12 @@
 
 syntax = "proto2";
 package android.find_input_delta_proto;
-option go_package = "android/soong/find_input_delta/proto";
+option go_package = "android/soong/cmd/find_input_delta/find_input_delta_proto";
+
+enum FieldNumbers {
+  FIELD_NUMBERS_UNSPECIFIED = 0;
+  FIELD_NUMBERS_FILE_LIST = 1;
+}
 
 message FileList {
   // The name of the file.
@@ -26,9 +31,29 @@
   // The added files.
   repeated string additions = 2;
 
-  // The deleted files.
-  repeated string deletions = 3;
-
   // The changed files.
-  repeated FileList changes = 4;
+  repeated FileList changes = 3;
+
+  // The deleted files.
+  repeated string deletions = 4;
+
+  // Count of files added/changed/deleted.
+  optional uint32 total_delta = 5;
+
+  // Counts by extension.
+  repeated FileCount counts = 6;
+}
+
+message FileCount {
+  // The file extension
+  optional string extension = 1;
+
+  // Number of added files with this extension.
+  optional uint32 additions = 2;
+
+  // Number of modified files with this extension.
+  optional uint32 modifications = 3;
+
+  // Number of deleted files with this extension.
+  optional uint32 deletions = 4;
 }
diff --git a/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.pb.go b/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.pb.go
index 2229a32..c5b048b 100644
--- a/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.pb.go
+++ b/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.pb.go
@@ -19,7 +19,7 @@
 // 	protoc        v3.21.12
 // source: internal_state.proto
 
-package proto
+package find_input_delta_proto_internal
 
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
@@ -94,7 +94,7 @@
 	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
 	// The timestamp of the file in (Unix) nanoseconds.
 	MtimeNsec *int64 `protobuf:"varint,2,opt,name=mtime_nsec,json=mtimeNsec" json:"mtime_nsec,omitempty"`
-	// The hash of the file, in the form ‘{HASHNAME}:{VALUE}’
+	// The hash of the file.  For crc32 hashes, this will be 8 hex digits.
 	Hash *string `protobuf:"bytes,3,opt,name=hash" json:"hash,omitempty"`
 	// Contents of the file, if the file was inspected (such as jar files, etc).
 	Contents []*PartialCompileInput `protobuf:"bytes,4,rep,name=contents" json:"contents,omitempty"`
@@ -164,29 +164,33 @@
 
 var file_internal_state_proto_rawDesc = []byte{
 	0x0a, 0x14, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x5f, 0x73, 0x74, 0x61, 0x74, 0x65,
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-	0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x33, 0x2e, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2e,
-	0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64, 0x65, 0x6c, 0x74, 0x61,
-	0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x50, 0x61, 0x72, 0x74, 0x69, 0x61, 0x6c, 0x43, 0x6f,
-	0x6d, 0x70, 0x69, 0x6c, 0x65, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x52, 0x08, 0x63, 0x6f, 0x6e, 0x74,
-	0x65, 0x6e, 0x74, 0x73, 0x42, 0x26, 0x5a, 0x24, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f,
-	0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74,
-	0x5f, 0x64, 0x65, 0x6c, 0x74, 0x61, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x5f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x22,
+	0x75, 0x0a, 0x14, 0x50, 0x61, 0x72, 0x74, 0x69, 0x61, 0x6c, 0x43, 0x6f, 0x6d, 0x70, 0x69, 0x6c,
+	0x65, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x73, 0x12, 0x5d, 0x0a, 0x0b, 0x69, 0x6e, 0x70, 0x75, 0x74,
+	0x5f, 0x66, 0x69, 0x6c, 0x65, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x3c, 0x2e, 0x61,
+	0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2e, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75,
+	0x74, 0x5f, 0x64, 0x65, 0x6c, 0x74, 0x61, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x5f, 0x69, 0x6e,
+	0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2e, 0x50, 0x61, 0x72, 0x74, 0x69, 0x61, 0x6c, 0x43, 0x6f,
+	0x6d, 0x70, 0x69, 0x6c, 0x65, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x52, 0x0a, 0x69, 0x6e, 0x70, 0x75,
+	0x74, 0x46, 0x69, 0x6c, 0x65, 0x73, 0x22, 0xb6, 0x01, 0x0a, 0x13, 0x50, 0x61, 0x72, 0x74, 0x69,
+	0x61, 0x6c, 0x43, 0x6f, 0x6d, 0x70, 0x69, 0x6c, 0x65, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x12, 0x12,
+	0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61,
+	0x6d, 0x65, 0x12, 0x1d, 0x0a, 0x0a, 0x6d, 0x74, 0x69, 0x6d, 0x65, 0x5f, 0x6e, 0x73, 0x65, 0x63,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x6d, 0x74, 0x69, 0x6d, 0x65, 0x4e, 0x73, 0x65,
+	0x63, 0x12, 0x12, 0x0a, 0x04, 0x68, 0x61, 0x73, 0x68, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x04, 0x68, 0x61, 0x73, 0x68, 0x12, 0x58, 0x0a, 0x08, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74,
+	0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x3c, 0x2e, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69,
+	0x64, 0x2e, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64, 0x65, 0x6c,
+	0x74, 0x61, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x5f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61,
+	0x6c, 0x2e, 0x50, 0x61, 0x72, 0x74, 0x69, 0x61, 0x6c, 0x43, 0x6f, 0x6d, 0x70, 0x69, 0x6c, 0x65,
+	0x49, 0x6e, 0x70, 0x75, 0x74, 0x52, 0x08, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x73, 0x42,
+	0x40, 0x5a, 0x3e, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67,
+	0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64, 0x65, 0x6c, 0x74,
+	0x61, 0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64, 0x65, 0x6c,
+	0x74, 0x61, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x5f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61,
+	0x6c,
 }
 
 var (
@@ -203,12 +207,12 @@
 
 var file_internal_state_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_internal_state_proto_goTypes = []interface{}{
-	(*PartialCompileInputs)(nil), // 0: android.find_input_delta_proto.PartialCompileInputs
-	(*PartialCompileInput)(nil),  // 1: android.find_input_delta_proto.PartialCompileInput
+	(*PartialCompileInputs)(nil), // 0: android.find_input_delta_proto_internal.PartialCompileInputs
+	(*PartialCompileInput)(nil),  // 1: android.find_input_delta_proto_internal.PartialCompileInput
 }
 var file_internal_state_proto_depIdxs = []int32{
-	1, // 0: android.find_input_delta_proto.PartialCompileInputs.input_files:type_name -> android.find_input_delta_proto.PartialCompileInput
-	1, // 1: android.find_input_delta_proto.PartialCompileInput.contents:type_name -> android.find_input_delta_proto.PartialCompileInput
+	1, // 0: android.find_input_delta_proto_internal.PartialCompileInputs.input_files:type_name -> android.find_input_delta_proto_internal.PartialCompileInput
+	1, // 1: android.find_input_delta_proto_internal.PartialCompileInput.contents:type_name -> android.find_input_delta_proto_internal.PartialCompileInput
 	2, // [2:2] is the sub-list for method output_type
 	2, // [2:2] is the sub-list for method input_type
 	2, // [2:2] is the sub-list for extension type_name
diff --git a/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.proto b/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.proto
index 113fc64..54c90cc 100644
--- a/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.proto
+++ b/cmd/find_input_delta/find_input_delta_proto_internal/internal_state.proto
@@ -14,8 +14,8 @@
 // limitations under the License.
 
 syntax = "proto2";
-package android.find_input_delta_proto;
-option go_package = "android/soong/find_input_delta/proto";
+package android.find_input_delta_proto_internal;
+option go_package = "android/soong/find_input_delta/find_input_delta_proto_internal";
 
 // The state of all inputs.
 message PartialCompileInputs {
@@ -31,7 +31,7 @@
   // The timestamp of the file in (Unix) nanoseconds.
   optional int64 mtime_nsec = 2;
 
-  // The hash of the file, in the form ‘{HASHNAME}:{VALUE}’
+  // The hash of the file.  For crc32 hashes, this will be 8 hex digits.
   optional string hash = 3;
 
   // Contents of the file, if the file was inspected (such as jar files, etc).
diff --git a/filesystem/bootimg.go b/filesystem/bootimg.go
index c9bd617..226d95c 100644
--- a/filesystem/bootimg.go
+++ b/filesystem/bootimg.go
@@ -26,19 +26,19 @@
 )
 
 func init() {
-	android.RegisterModuleType("bootimg", bootimgFactory)
+	android.RegisterModuleType("bootimg", BootimgFactory)
 }
 
 type bootimg struct {
 	android.ModuleBase
 
-	properties bootimgProperties
+	properties BootimgProperties
 
 	output     android.Path
 	installDir android.InstallPath
 }
 
-type bootimgProperties struct {
+type BootimgProperties struct {
 	// Set the name of the output. Defaults to <module_name>.img.
 	Stem *string
 
@@ -82,7 +82,7 @@
 }
 
 // bootimg is the image for the boot partition. It consists of header, kernel, ramdisk, and dtb.
-func bootimgFactory() android.Module {
+func BootimgFactory() android.Module {
 	module := &bootimg{}
 	module.AddProperties(&module.properties)
 	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibFirst)
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index c471da1..965a891 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -166,6 +166,10 @@
 	// Determines if the module is auto-generated from Soong or not. If the module is
 	// auto-generated, its deps are exempted from visibility enforcement.
 	Is_auto_generated *bool
+
+	// Path to the dev nodes description file. This is only needed for building the ramdisk
+	// partition and should not be explicitly specified.
+	Dev_nodes_description_file *string `android:"path" blueprint:"mutated"`
 }
 
 // Additional properties required to generate erofs FS partitions.
@@ -214,6 +218,10 @@
 	filesystemModule.PackagingBase.AllowHighPriorityDeps = true
 	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
 	android.InitDefaultableModule(module)
+
+	android.AddLoadHook(module, func(ctx android.LoadHookContext) {
+		filesystemModule.setDevNodesDescriptionProp()
+	})
 }
 
 type depTag struct {
@@ -233,6 +241,16 @@
 
 var dependencyTagWithVisibilityEnforcementBypass = depTagWithVisibilityEnforcementBypass{}
 
+// ramdiskDevNodesDescription is the name of the filegroup module that provides the file that
+// contains the description of dev nodes added to the CPIO archive for the ramdisk partition.
+const ramdiskDevNodesDescription = "ramdisk_node_list"
+
+func (f *filesystem) setDevNodesDescriptionProp() {
+	if proptools.String(f.properties.Partition_name) == "ramdisk" {
+		f.properties.Dev_nodes_description_file = proptools.StringPtr(":" + ramdiskDevNodesDescription)
+	}
+}
+
 func (f *filesystem) DepsMutator(ctx android.BottomUpMutatorContext) {
 	if proptools.Bool(f.properties.Is_auto_generated) {
 		f.AddDeps(ctx, dependencyTagWithVisibilityEnforcementBypass)
@@ -703,6 +721,9 @@
 	cmd := builder.Command().
 		BuiltTool("mkbootfs").
 		Text(rootDir.String()) // input directory
+	if nodeList := f.properties.Dev_nodes_description_file; nodeList != nil {
+		cmd.FlagWithInput("-n ", android.PathForModuleSrc(ctx, proptools.String(nodeList)))
+	}
 	if compressed {
 		cmd.Text("|").
 			BuiltTool("lz4").
@@ -733,6 +754,7 @@
 	"odm_dlkm",
 	"system_dlkm",
 	"ramdisk",
+	"vendor_ramdisk",
 }
 
 func (f *filesystem) addMakeBuiltFiles(ctx android.ModuleContext, builder *android.RuleBuilder, rootDir android.Path) {
diff --git a/filesystem/filesystem_test.go b/filesystem/filesystem_test.go
index f325d96..746e4de 100644
--- a/filesystem/filesystem_test.go
+++ b/filesystem/filesystem_test.go
@@ -666,7 +666,9 @@
 
 	partition := result.ModuleForTests("myfilesystem", "android_common")
 	fileList := android.ContentFromFileRuleForTests(t, result.TestContext, partition.Output("fileList"))
-	android.AssertDeepEquals(t, "cc_library listed in deps", "lib64/libc++.so\nlib64/libc.so\nlib64/libdl.so\nlib64/libfoo.so\nlib64/libm.so\n", fileList)
+	android.AssertDeepEquals(t, "cc_library listed in deps",
+		"lib64/bootstrap/libc.so\nlib64/bootstrap/libdl.so\nlib64/bootstrap/libm.so\nlib64/libc++.so\nlib64/libc.so\nlib64/libdl.so\nlib64/libfoo.so\nlib64/libm.so\n",
+		fileList)
 }
 
 // binfoo1 overrides binbar. transitive deps of binbar should not be installed.
@@ -701,7 +703,9 @@
 
 	partition := result.ModuleForTests("myfilesystem", "android_common")
 	fileList := android.ContentFromFileRuleForTests(t, result.TestContext, partition.Output("fileList"))
-	android.AssertDeepEquals(t, "Shared library dep of overridden binary should not be installed", fileList, "bin/binfoo1\nlib64/libc++.so\nlib64/libc.so\nlib64/libdl.so\nlib64/libfoo2.so\nlib64/libm.so\n")
+	android.AssertDeepEquals(t, "Shared library dep of overridden binary should not be installed",
+		"bin/binfoo1\nlib64/bootstrap/libc.so\nlib64/bootstrap/libdl.so\nlib64/bootstrap/libm.so\nlib64/libc++.so\nlib64/libc.so\nlib64/libdl.so\nlib64/libfoo2.so\nlib64/libm.so\n",
+		fileList)
 }
 
 func TestInstallLinkerConfigFile(t *testing.T) {
@@ -754,3 +758,28 @@
 	fileList := android.ContentFromFileRuleForTests(t, result.TestContext, partition.Output("fileList"))
 	android.AssertStringEquals(t, "filesystem with override app", "app/myoverrideapp/myoverrideapp.apk\n", fileList)
 }
+
+func TestRamdiskPartitionSetsDevNodes(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		fixture,
+		android.FixtureMergeMockFs(android.MockFS{
+			"ramdisk_node_list": nil,
+		}),
+	).RunTestWithBp(t, `
+		android_filesystem {
+			name: "ramdisk_filesystem",
+			partition_name: "ramdisk",
+		}
+		filegroup {
+			name: "ramdisk_node_list",
+			srcs: ["ramdisk_node_list"],
+		}
+	`)
+
+	android.AssertBoolEquals(
+		t,
+		"Generated ramdisk image expected to depend on \"ramdisk_node_list\" module",
+		true,
+		java.CheckModuleHasDependency(t, result.TestContext, "ramdisk_filesystem", "android_common", "ramdisk_node_list"),
+	)
+}
diff --git a/fsgen/Android.bp b/fsgen/Android.bp
index 8cd7518..a022581 100644
--- a/fsgen/Android.bp
+++ b/fsgen/Android.bp
@@ -13,6 +13,7 @@
         "soong-kernel",
     ],
     srcs: [
+        "boot_imgs.go",
         "filesystem_creator.go",
         "fsgen_mutators.go",
         "prebuilt_etc_modules_gen.go",
diff --git a/fsgen/boot_imgs.go b/fsgen/boot_imgs.go
new file mode 100644
index 0000000..1f8c05d
--- /dev/null
+++ b/fsgen/boot_imgs.go
@@ -0,0 +1,125 @@
+package fsgen
+
+import (
+	"android/soong/android"
+	"android/soong/filesystem"
+	"fmt"
+	"path/filepath"
+	"strconv"
+
+	"github.com/google/blueprint/proptools"
+)
+
+func createBootImage(ctx android.LoadHookContext) bool {
+	partitionVariables := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+
+	if partitionVariables.TargetKernelPath == "" {
+		// There are potentially code paths that don't set TARGET_KERNEL_PATH
+		return false
+	}
+
+	kernelDir := filepath.Dir(partitionVariables.TargetKernelPath)
+	kernelBase := filepath.Base(partitionVariables.TargetKernelPath)
+	kernelFilegroupName := generatedModuleName(ctx.Config(), "kernel")
+
+	ctx.CreateModuleInDirectory(
+		android.FileGroupFactory,
+		kernelDir,
+		&struct {
+			Name       *string
+			Srcs       []string
+			Visibility []string
+		}{
+			Name:       proptools.StringPtr(kernelFilegroupName),
+			Srcs:       []string{kernelBase},
+			Visibility: []string{"//visibility:public"},
+		},
+	)
+
+	bootImageName := generatedModuleNameForPartition(ctx.Config(), "boot")
+
+	ctx.CreateModule(
+		filesystem.BootimgFactory,
+		&filesystem.BootimgProperties{
+			Kernel_prebuilt: proptools.StringPtr(":" + kernelFilegroupName),
+			Ramdisk_module:  proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "ramdisk")),
+			Header_version:  proptools.StringPtr(partitionVariables.BoardBootHeaderVersion),
+		},
+		&struct {
+			Name *string
+		}{
+			Name: proptools.StringPtr(bootImageName),
+		},
+	)
+	return true
+}
+
+func createVendorBootImage(ctx android.LoadHookContext) bool {
+	partitionVariables := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+
+	bootImageName := generatedModuleNameForPartition(ctx.Config(), "vendor_boot")
+
+	ctx.CreateModule(
+		filesystem.BootimgFactory,
+		&filesystem.BootimgProperties{
+			Vendor_boot:    proptools.BoolPtr(true),
+			Ramdisk_module: proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "vendor_ramdisk")),
+			Header_version: proptools.StringPtr(partitionVariables.BoardBootHeaderVersion),
+		},
+		&struct {
+			Name *string
+		}{
+			Name: proptools.StringPtr(bootImageName),
+		},
+	)
+	return true
+}
+
+// Returns the equivalent of the BUILDING_BOOT_IMAGE variable in make. Derived from this logic:
+// https://cs.android.com/android/platform/superproject/main/+/main:build/make/core/board_config.mk;l=458;drc=5b55f926830963c02ab1d2d91e46442f04ba3af0
+func buildingBootImage(partitionVars android.PartitionVariables) bool {
+	if partitionVars.BoardUsesRecoveryAsBoot {
+		return false
+	}
+
+	if partitionVars.ProductBuildBootImage {
+		return true
+	}
+
+	if len(partitionVars.BoardPrebuiltBootimage) > 0 {
+		return false
+	}
+
+	if len(partitionVars.BoardBootimagePartitionSize) > 0 {
+		return true
+	}
+
+	// TODO: return true if BOARD_KERNEL_BINARIES is set and has a *_BOOTIMAGE_PARTITION_SIZE
+	// variable. However, I don't think BOARD_KERNEL_BINARIES is ever set in practice.
+
+	return false
+}
+
+// Returns the equivalent of the BUILDING_VENDOR_BOOT_IMAGE variable in make. Derived from this logic:
+// https://cs.android.com/android/platform/superproject/main/+/main:build/make/core/board_config.mk;l=518;drc=5b55f926830963c02ab1d2d91e46442f04ba3af0
+func buildingVendorBootImage(partitionVars android.PartitionVariables) bool {
+	if v, exists := boardBootHeaderVersion(partitionVars); exists && v >= 3 {
+		x := partitionVars.ProductBuildVendorBootImage
+		if x == "" || x == "true" {
+			return true
+		}
+	}
+
+	return false
+}
+
+func boardBootHeaderVersion(partitionVars android.PartitionVariables) (int, bool) {
+	if len(partitionVars.BoardBootHeaderVersion) == 0 {
+		return 0, false
+	}
+	v, err := strconv.ParseInt(partitionVars.BoardBootHeaderVersion, 10, 32)
+	if err != nil {
+		panic(fmt.Sprintf("BOARD_BOOT_HEADER_VERSION must be an int, got: %q", partitionVars.BoardBootHeaderVersion))
+	}
+	return int(v), true
+}
diff --git a/fsgen/filesystem_creator.go b/fsgen/filesystem_creator.go
index d46f679..6eae23a 100644
--- a/fsgen/filesystem_creator.go
+++ b/fsgen/filesystem_creator.go
@@ -47,6 +47,9 @@
 
 	Vbmeta_module_names    []string `blueprint:"mutated"`
 	Vbmeta_partition_names []string `blueprint:"mutated"`
+
+	Boot_image        string `blueprint:"mutated" android:"path_device_first"`
+	Vendor_boot_image string `blueprint:"mutated" android:"path_device_first"`
 }
 
 type filesystemCreator struct {
@@ -64,12 +67,49 @@
 		generatedPrebuiltEtcModuleNames := createPrebuiltEtcModules(ctx)
 		avbpubkeyGenerated := createAvbpubkeyModule(ctx)
 		createFsGenState(ctx, generatedPrebuiltEtcModuleNames, avbpubkeyGenerated)
+		module.createAvbKeyFilegroups(ctx)
 		module.createInternalModules(ctx)
 	})
 
 	return module
 }
 
+func generatedPartitions(ctx android.LoadHookContext) []string {
+	partitionVars := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+	generatedPartitions := []string{"system"}
+	if ctx.DeviceConfig().SystemExtPath() == "system_ext" {
+		generatedPartitions = append(generatedPartitions, "system_ext")
+	}
+	if ctx.DeviceConfig().BuildingVendorImage() && ctx.DeviceConfig().VendorPath() == "vendor" {
+		generatedPartitions = append(generatedPartitions, "vendor")
+	}
+	if ctx.DeviceConfig().BuildingProductImage() && ctx.DeviceConfig().ProductPath() == "product" {
+		generatedPartitions = append(generatedPartitions, "product")
+	}
+	if ctx.DeviceConfig().BuildingOdmImage() && ctx.DeviceConfig().OdmPath() == "odm" {
+		generatedPartitions = append(generatedPartitions, "odm")
+	}
+	if ctx.DeviceConfig().BuildingUserdataImage() && ctx.DeviceConfig().UserdataPath() == "data" {
+		generatedPartitions = append(generatedPartitions, "userdata")
+	}
+	if partitionVars.BuildingSystemDlkmImage {
+		generatedPartitions = append(generatedPartitions, "system_dlkm")
+	}
+	if partitionVars.BuildingVendorDlkmImage {
+		generatedPartitions = append(generatedPartitions, "vendor_dlkm")
+	}
+	if partitionVars.BuildingOdmDlkmImage {
+		generatedPartitions = append(generatedPartitions, "odm_dlkm")
+	}
+	if partitionVars.BuildingRamdiskImage {
+		generatedPartitions = append(generatedPartitions, "ramdisk")
+	}
+	if buildingVendorBootImage(partitionVars) {
+		generatedPartitions = append(generatedPartitions, "vendor_ramdisk")
+	}
+	return generatedPartitions
+}
+
 func (f *filesystemCreator) createInternalModules(ctx android.LoadHookContext) {
 	soongGeneratedPartitions := generatedPartitions(ctx)
 	finalSoongGeneratedPartitions := make([]string, 0, len(soongGeneratedPartitions))
@@ -82,6 +122,22 @@
 		}
 	}
 
+	partitionVars := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+	if buildingBootImage(partitionVars) {
+		if createBootImage(ctx) {
+			f.properties.Boot_image = ":" + generatedModuleNameForPartition(ctx.Config(), "boot")
+		} else {
+			f.properties.Unsupported_partition_types = append(f.properties.Unsupported_partition_types, "boot")
+		}
+	}
+	if buildingVendorBootImage(partitionVars) {
+		if createVendorBootImage(ctx) {
+			f.properties.Vendor_boot_image = ":" + generatedModuleNameForPartition(ctx.Config(), "vendor_boot")
+		} else {
+			f.properties.Unsupported_partition_types = append(f.properties.Unsupported_partition_types, "vendor_boot")
+		}
+	}
+
 	for _, x := range createVbmetaPartitions(ctx, finalSoongGeneratedPartitions) {
 		f.properties.Vbmeta_module_names = append(f.properties.Vbmeta_module_names, x.moduleName)
 		f.properties.Vbmeta_partition_names = append(f.properties.Vbmeta_partition_names, x.partitionName)
@@ -139,13 +195,13 @@
 	ctx.CreateModule(filesystem.AndroidDeviceFactory, baseProps, partitionProps)
 }
 
-func partitionSpecificFsProps(fsProps *filesystem.FilesystemProperties, partitionType string) {
+func partitionSpecificFsProps(fsProps *filesystem.FilesystemProperties, partitionVars android.PartitionVariables, partitionType string) {
 	switch partitionType {
 	case "system":
 		fsProps.Build_logtags = proptools.BoolPtr(true)
 		// https://source.corp.google.com/h/googleplex-android/platform/build//639d79f5012a6542ab1f733b0697db45761ab0f3:core/packaging/flags.mk;l=21;drc=5ba8a8b77507f93aa48cc61c5ba3f31a4d0cbf37;bpv=1;bpt=0
 		fsProps.Gen_aconfig_flags_pb = proptools.BoolPtr(true)
-		// Identical to that of the generic_system_image
+		// Identical to that of the aosp_shared_system_image
 		fsProps.Fsverity.Inputs = []string{
 			"etc/boot-image.prof",
 			"etc/dirty-image-objects",
@@ -175,7 +231,6 @@
 				Name:   proptools.StringPtr("system/lib/modules"),
 			},
 		}
-		fsProps.Base_dir = proptools.StringPtr("system")
 	case "system_ext":
 		fsProps.Fsverity.Inputs = []string{
 			"framework/*",
@@ -197,7 +252,6 @@
 				Name:   proptools.StringPtr("vendor/lib/modules"),
 			},
 		}
-		fsProps.Base_dir = proptools.StringPtr("vendor")
 	case "odm":
 		fsProps.Symlinks = []filesystem.SymlinkDefinition{
 			filesystem.SymlinkDefinition{
@@ -205,10 +259,30 @@
 				Name:   proptools.StringPtr("odm/lib/modules"),
 			},
 		}
-		fsProps.Base_dir = proptools.StringPtr("odm")
 	case "userdata":
 		fsProps.Base_dir = proptools.StringPtr("data")
-
+	case "ramdisk":
+		// Following the logic in https://cs.android.com/android/platform/superproject/main/+/c3c5063df32748a8806ce5da5dd0db158eab9ad9:build/make/core/Makefile;l=1307
+		fsProps.Dirs = android.NewSimpleConfigurable([]string{
+			"debug_ramdisk",
+			"dev",
+			"metadata",
+			"mnt",
+			"proc",
+			"second_stage_resources",
+			"sys",
+		})
+		if partitionVars.BoardUsesGenericKernelImage {
+			fsProps.Dirs.AppendSimpleValue([]string{
+				"first_stage_ramdisk/debug_ramdisk",
+				"first_stage_ramdisk/dev",
+				"first_stage_ramdisk/metadata",
+				"first_stage_ramdisk/mnt",
+				"first_stage_ramdisk/proc",
+				"first_stage_ramdisk/second_stage_resources",
+				"first_stage_ramdisk/sys",
+			})
+		}
 	}
 }
 
@@ -254,6 +328,51 @@
 	return true
 }
 
+// Creates filegroups for the files specified in BOARD_(partition_)AVB_KEY_PATH
+func (f *filesystemCreator) createAvbKeyFilegroups(ctx android.LoadHookContext) {
+	partitionVars := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+	var files []string
+
+	if len(partitionVars.BoardAvbKeyPath) > 0 {
+		files = append(files, partitionVars.BoardAvbKeyPath)
+	}
+	for _, partition := range android.SortedKeys(partitionVars.PartitionQualifiedVariables) {
+		specificPartitionVars := partitionVars.PartitionQualifiedVariables[partition]
+		if len(specificPartitionVars.BoardAvbKeyPath) > 0 {
+			files = append(files, specificPartitionVars.BoardAvbKeyPath)
+		}
+	}
+
+	fsGenState := ctx.Config().Get(fsGenStateOnceKey).(*FsGenState)
+	for _, file := range files {
+		if _, ok := fsGenState.avbKeyFilegroups[file]; ok {
+			continue
+		}
+		if file == "external/avb/test/data/testkey_rsa4096.pem" {
+			// There already exists a checked-in filegroup for this commonly-used key, just use that
+			fsGenState.avbKeyFilegroups[file] = "avb_testkey_rsa4096"
+			continue
+		}
+		dir := filepath.Dir(file)
+		base := filepath.Base(file)
+		name := fmt.Sprintf("avb_key_%x", strings.ReplaceAll(file, "/", "_"))
+		ctx.CreateModuleInDirectory(
+			android.FileGroupFactory,
+			dir,
+			&struct {
+				Name       *string
+				Srcs       []string
+				Visibility []string
+			}{
+				Name:       proptools.StringPtr(name),
+				Srcs:       []string{base},
+				Visibility: []string{"//visibility:public"},
+			},
+		)
+		fsGenState.avbKeyFilegroups[file] = name
+	}
+}
+
 // createPrebuiltKernelModules creates `prebuilt_kernel_modules`. These modules will be added to deps of the
 // autogenerated *_dlkm filsystem modules. Each _dlkm partition should have a single prebuilt_kernel_modules dependency.
 // This ensures that the depmod artifacts (modules.* installed in /lib/modules/) are generated with a complete view.
@@ -274,7 +393,7 @@
 	}
 	switch partitionType {
 	case "system_dlkm":
-		props.Srcs = ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.SystemKernelModules
+		props.Srcs = android.ExistentPathsForSources(ctx, ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.SystemKernelModules).Strings()
 		props.System_dlkm_specific = proptools.BoolPtr(true)
 		if len(ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.SystemKernelLoadModules) == 0 {
 			// Create empty modules.load file for system
@@ -285,7 +404,7 @@
 			props.Blocklist_file = proptools.StringPtr(blocklistFile)
 		}
 	case "vendor_dlkm":
-		props.Srcs = ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.VendorKernelModules
+		props.Srcs = android.ExistentPathsForSources(ctx, ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.VendorKernelModules).Strings()
 		if len(ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.SystemKernelModules) > 0 {
 			props.System_deps = []string{":" + generatedModuleName(ctx.Config(), "system_dlkm-kernel-modules") + "{.modules}"}
 		}
@@ -294,7 +413,7 @@
 			props.Blocklist_file = proptools.StringPtr(blocklistFile)
 		}
 	case "odm_dlkm":
-		props.Srcs = ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.OdmKernelModules
+		props.Srcs = android.ExistentPathsForSources(ctx, ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.OdmKernelModules).Strings()
 		props.Odm_dlkm_specific = proptools.BoolPtr(true)
 		if blocklistFile := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.OdmKernelBlocklistFile; blocklistFile != "" {
 			props.Blocklist_file = proptools.StringPtr(blocklistFile)
@@ -419,21 +538,41 @@
 }
 
 func generateFsProps(ctx android.EarlyModuleContext, partitionType string) (*filesystem.FilesystemProperties, bool) {
+	fsGenState := ctx.Config().Get(fsGenStateOnceKey).(*FsGenState)
 	fsProps := &filesystem.FilesystemProperties{}
 
 	partitionVars := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
-	var specificPartitionVars android.PartitionQualifiedVariablesType
 	var boardAvbEnable bool
+	var boardAvbKeyPath string
+	var boardAvbAlgorithm string
+	var boardAvbRollbackIndex string
 	var fsType string
 	if strings.Contains(partitionType, "ramdisk") {
 		fsType = "compressed_cpio"
 	} else {
-		specificPartitionVars = partitionVars.PartitionQualifiedVariables[partitionType]
-		boardAvbEnable = partitionVars.BoardAvbEnable
+		specificPartitionVars := partitionVars.PartitionQualifiedVariables[partitionType]
 		fsType = specificPartitionVars.BoardFileSystemType
+		boardAvbEnable = partitionVars.BoardAvbEnable
+		boardAvbKeyPath = specificPartitionVars.BoardAvbKeyPath
+		boardAvbAlgorithm = specificPartitionVars.BoardAvbAlgorithm
+		boardAvbRollbackIndex = specificPartitionVars.BoardAvbRollbackIndex
+		if boardAvbEnable {
+			if boardAvbKeyPath == "" {
+				boardAvbKeyPath = partitionVars.BoardAvbKeyPath
+			}
+			if boardAvbAlgorithm == "" {
+				boardAvbAlgorithm = partitionVars.BoardAvbAlgorithm
+			}
+			if boardAvbRollbackIndex == "" {
+				boardAvbRollbackIndex = partitionVars.BoardAvbRollbackIndex
+			}
+		}
+		if fsType == "" {
+			fsType = "ext4" //default
+		}
 	}
-	if fsType == "" {
-		fsType = "ext4" //default
+	if boardAvbKeyPath != "" {
+		boardAvbKeyPath = ":" + fsGenState.avbKeyFilegroups[boardAvbKeyPath]
 	}
 
 	fsProps.Type = proptools.StringPtr(fsType)
@@ -449,11 +588,11 @@
 	// BOARD_AVB_ENABLE
 	fsProps.Use_avb = proptools.BoolPtr(boardAvbEnable)
 	// BOARD_AVB_KEY_PATH
-	fsProps.Avb_private_key = proptools.StringPtr(specificPartitionVars.BoardAvbKeyPath)
+	fsProps.Avb_private_key = proptools.StringPtr(boardAvbKeyPath)
 	// BOARD_AVB_ALGORITHM
-	fsProps.Avb_algorithm = proptools.StringPtr(specificPartitionVars.BoardAvbAlgorithm)
+	fsProps.Avb_algorithm = proptools.StringPtr(boardAvbAlgorithm)
 	// BOARD_AVB_SYSTEM_ROLLBACK_INDEX
-	if rollbackIndex, err := strconv.ParseInt(specificPartitionVars.BoardAvbRollbackIndex, 10, 64); err == nil {
+	if rollbackIndex, err := strconv.ParseInt(boardAvbRollbackIndex, 10, 64); err == nil {
 		fsProps.Rollback_index = proptools.Int64Ptr(rollbackIndex)
 	}
 
@@ -463,7 +602,7 @@
 
 	fsProps.Is_auto_generated = proptools.BoolPtr(true)
 
-	partitionSpecificFsProps(fsProps, partitionType)
+	partitionSpecificFsProps(fsProps, partitionVars, partitionType)
 
 	// system_image properties that are not set:
 	// - filesystemProperties.Avb_hash_algorithm
@@ -480,7 +619,7 @@
 	return fsProps, true
 }
 
-func (f *filesystemCreator) createDiffTest(ctx android.ModuleContext, partitionType string) android.Path {
+func (f *filesystemCreator) createFileListDiffTest(ctx android.ModuleContext, partitionType string) android.Path {
 	partitionModuleName := generatedModuleNameForPartition(ctx.Config(), partitionType)
 	systemImage := ctx.GetDirectDepWithTag(partitionModuleName, generatedFilesystemDepTag)
 	filesystemInfo, ok := android.OtherModuleProvider(ctx, systemImage, filesystem.FilesystemProvider)
@@ -525,13 +664,17 @@
 	makeVbmetaFile := android.PathForArbitraryOutput(ctx, fmt.Sprintf("target/product/%s/%s.img", ctx.Config().DeviceName(), vbmetaPartitionName))
 
 	diffTestResultFile := android.PathForModuleOut(ctx, fmt.Sprintf("diff_test_%s.txt", vbmetaModuleName))
+	createDiffTest(ctx, diffTestResultFile, soongVbMetaFile, makeVbmetaFile)
+	return diffTestResultFile
+}
+
+func createDiffTest(ctx android.ModuleContext, diffTestResultFile android.WritablePath, file1 android.Path, file2 android.Path) {
 	builder := android.NewRuleBuilder(pctx, ctx)
 	builder.Command().Text("diff").
-		Input(soongVbMetaFile).
-		Input(makeVbmetaFile)
+		Input(file1).
+		Input(file2)
 	builder.Command().Text("touch").Output(diffTestResultFile)
-	builder.Build(vbmetaModuleName+" diff test", vbmetaModuleName+" diff test")
-	return diffTestResultFile
+	builder.Build("diff test "+diffTestResultFile.String(), "diff test")
 }
 
 type systemImageDepTagType struct {
@@ -568,7 +711,7 @@
 
 	var diffTestFiles []android.Path
 	for _, partitionType := range f.properties.Generated_partition_types {
-		diffTestFile := f.createDiffTest(ctx, partitionType)
+		diffTestFile := f.createFileListDiffTest(ctx, partitionType)
 		diffTestFiles = append(diffTestFiles, diffTestFile)
 		ctx.Phony(fmt.Sprintf("soong_generated_%s_filesystem_test", partitionType), diffTestFile)
 	}
@@ -582,6 +725,22 @@
 		diffTestFiles = append(diffTestFiles, diffTestFile)
 		ctx.Phony(fmt.Sprintf("soong_generated_%s_filesystem_test", f.properties.Vbmeta_partition_names[i]), diffTestFile)
 	}
+	if f.properties.Boot_image != "" {
+		diffTestFile := android.PathForModuleOut(ctx, "boot_diff_test.txt")
+		soongBootImg := android.PathForModuleSrc(ctx, f.properties.Boot_image)
+		makeBootImage := android.PathForArbitraryOutput(ctx, fmt.Sprintf("target/product/%s/boot.img", ctx.Config().DeviceName()))
+		createDiffTest(ctx, diffTestFile, soongBootImg, makeBootImage)
+		diffTestFiles = append(diffTestFiles, diffTestFile)
+		ctx.Phony("soong_generated_boot_filesystem_test", diffTestFile)
+	}
+	if f.properties.Vendor_boot_image != "" {
+		diffTestFile := android.PathForModuleOut(ctx, "vendor_boot_diff_test.txt")
+		soongBootImg := android.PathForModuleSrc(ctx, f.properties.Boot_image)
+		makeBootImage := android.PathForArbitraryOutput(ctx, fmt.Sprintf("target/product/%s/vendor_boot.img", ctx.Config().DeviceName()))
+		createDiffTest(ctx, diffTestFile, soongBootImg, makeBootImage)
+		diffTestFiles = append(diffTestFiles, diffTestFile)
+		ctx.Phony("soong_generated_vendor_boot_filesystem_test", diffTestFile)
+	}
 	ctx.Phony("soong_generated_filesystem_tests", diffTestFiles...)
 }
 
diff --git a/fsgen/filesystem_creator_test.go b/fsgen/filesystem_creator_test.go
index 6111a41..fe4a403 100644
--- a/fsgen/filesystem_creator_test.go
+++ b/fsgen/filesystem_creator_test.go
@@ -47,6 +47,12 @@
 		}),
 		android.FixtureMergeMockFs(android.MockFS{
 			"external/avb/test/data/testkey_rsa4096.pem": nil,
+			"external/avb/test/Android.bp": []byte(`
+			filegroup {
+				name: "avb_testkey_rsa4096",
+				srcs: ["data/testkey_rsa4096.pem"],
+			}
+			`),
 			"build/soong/fsgen/Android.bp": []byte(`
 			soong_filesystem_creator {
 				name: "foo",
@@ -66,8 +72,8 @@
 	)
 	android.AssertStringEquals(
 		t,
-		"Property expected to match the product variable 'BOARD_AVB_KEY_PATH'",
-		"external/avb/test/data/testkey_rsa4096.pem",
+		"Property the avb_private_key property to be set to the existing filegroup",
+		":avb_testkey_rsa4096",
 		proptools.String(fooSystem.FsProps().Avb_private_key),
 	)
 	android.AssertStringEquals(
diff --git a/fsgen/fsgen_mutators.go b/fsgen/fsgen_mutators.go
index e0e103a..12f9956 100644
--- a/fsgen/fsgen_mutators.go
+++ b/fsgen/fsgen_mutators.go
@@ -68,6 +68,8 @@
 	moduleToInstallationProps map[string]installationProperties
 	// List of prebuilt_* modules that are autogenerated.
 	generatedPrebuiltEtcModuleNames []string
+	// Mapping from a path to an avb key to the name of a filegroup module that contains it
+	avbKeyFilegroups map[string]string
 }
 
 type installationProperties struct {
@@ -82,36 +84,6 @@
 	}
 }
 
-func generatedPartitions(ctx android.LoadHookContext) []string {
-	generatedPartitions := []string{"system", "ramdisk"}
-	if ctx.DeviceConfig().SystemExtPath() == "system_ext" {
-		generatedPartitions = append(generatedPartitions, "system_ext")
-	}
-	if ctx.DeviceConfig().BuildingVendorImage() && ctx.DeviceConfig().VendorPath() == "vendor" {
-		generatedPartitions = append(generatedPartitions, "vendor")
-	}
-	if ctx.DeviceConfig().BuildingProductImage() && ctx.DeviceConfig().ProductPath() == "product" {
-		generatedPartitions = append(generatedPartitions, "product")
-	}
-	if ctx.DeviceConfig().BuildingOdmImage() && ctx.DeviceConfig().OdmPath() == "odm" {
-		generatedPartitions = append(generatedPartitions, "odm")
-	}
-	if ctx.DeviceConfig().BuildingUserdataImage() && ctx.DeviceConfig().UserdataPath() == "data" {
-		generatedPartitions = append(generatedPartitions, "userdata")
-	}
-	if ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.BuildingSystemDlkmImage {
-		generatedPartitions = append(generatedPartitions, "system_dlkm")
-	}
-	if ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.BuildingVendorDlkmImage {
-		generatedPartitions = append(generatedPartitions, "vendor_dlkm")
-	}
-	if ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.BuildingOdmDlkmImage {
-		generatedPartitions = append(generatedPartitions, "odm_dlkm")
-	}
-
-	return generatedPartitions
-}
-
 func createFsGenState(ctx android.LoadHookContext, generatedPrebuiltEtcModuleNames []string, avbpubkeyGenerated bool) *FsGenState {
 	return ctx.Config().Once(fsGenStateOnceKey, func() interface{} {
 		partitionVars := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
@@ -174,11 +146,13 @@
 					"fs_config_files_odm_dlkm": defaultDepCandidateProps(ctx.Config()),
 					"odm_dlkm-build.prop":      defaultDepCandidateProps(ctx.Config()),
 				},
-				"ramdisk": {},
+				"ramdisk":        {},
+				"vendor_ramdisk": {},
 			},
 			fsDepsMutex:                     sync.Mutex{},
 			moduleToInstallationProps:       map[string]installationProperties{},
 			generatedPrebuiltEtcModuleNames: generatedPrebuiltEtcModuleNames,
+			avbKeyFilegroups:                map[string]string{},
 		}
 
 		if avbpubkeyGenerated {
@@ -386,6 +360,7 @@
 	depsStruct.Multilib.Prefer32.Deps = android.SortedUniqueStrings(depsStruct.Multilib.Prefer32.Deps)
 	depsStruct.Multilib.Both.Deps = android.SortedUniqueStrings(depsStruct.Multilib.Both.Deps)
 	depsStruct.Multilib.Common.Deps = android.SortedUniqueStrings(depsStruct.Multilib.Common.Deps)
+	depsStruct.High_priority_deps = android.SortedUniqueStrings(depsStruct.High_priority_deps)
 
 	return &depsStruct
 }
diff --git a/fsgen/vbmeta_partitions.go b/fsgen/vbmeta_partitions.go
index b7fff68..11c5759 100644
--- a/fsgen/vbmeta_partitions.go
+++ b/fsgen/vbmeta_partitions.go
@@ -19,6 +19,7 @@
 	"android/soong/filesystem"
 	"slices"
 	"strconv"
+	"strings"
 
 	"github.com/google/blueprint/proptools"
 )
@@ -153,8 +154,10 @@
 			// Already handled by a chained vbmeta partition
 			continue
 		}
-		if partitionType == "ramdisk" {
+		if strings.Contains(partitionType, "ramdisk") || strings.Contains(partitionType, "boot") {
 			// ramdisk is never signed with avb information
+			// boot partitions just have the avb footer, and don't have a corresponding vbmeta
+			// partition.
 			continue
 		}
 		partitionModules = append(partitionModules, generatedModuleNameForPartition(ctx.Config(), partitionType))
diff --git a/java/app.go b/java/app.go
index 8bb73cb..7f80160 100644
--- a/java/app.go
+++ b/java/app.go
@@ -164,7 +164,7 @@
 type overridableAppProperties struct {
 	// The name of a certificate in the default certificate directory, blank to use the default product certificate,
 	// or an android_app_certificate module name in the form ":module".
-	Certificate *string
+	Certificate proptools.Configurable[string] `android:"replace_instead_of_append"`
 
 	// Name of the signing certificate lineage file or filegroup module.
 	Lineage *string `android:"path"`
@@ -1252,7 +1252,7 @@
 	if overridden {
 		return ":" + certificate
 	}
-	return String(a.overridableAppProperties.Certificate)
+	return a.overridableAppProperties.Certificate.GetOrDefault(ctx, "")
 }
 
 func (a *AndroidApp) DepIsInSameApex(ctx android.BaseModuleContext, dep android.Module) bool {
diff --git a/java/app_import.go b/java/app_import.go
index f044c68..8951c7d 100644
--- a/java/app_import.go
+++ b/java/app_import.go
@@ -97,7 +97,7 @@
 
 	// The name of a certificate in the default certificate directory or an android_app_certificate
 	// module name in the form ":module". Should be empty if presigned or default_dev_cert is set.
-	Certificate *string
+	Certificate proptools.Configurable[string] `android:"replace_instead_of_append"`
 
 	// Names of extra android_app_certificate modules to sign the apk with in the form ":module".
 	Additional_certificates []string
@@ -240,7 +240,7 @@
 }
 
 func (a *AndroidAppImport) DepsMutator(ctx android.BottomUpMutatorContext) {
-	cert := android.SrcIsModule(String(a.properties.Certificate))
+	cert := android.SrcIsModule(a.properties.Certificate.GetOrDefault(ctx, ""))
 	if cert != "" {
 		ctx.AddDependency(ctx.Module(), certificateTag, cert)
 	}
@@ -323,7 +323,7 @@
 	}
 
 	numCertPropsSet := 0
-	if String(a.properties.Certificate) != "" {
+	if a.properties.Certificate.GetOrDefault(ctx, "") != "" {
 		numCertPropsSet++
 	}
 	if Bool(a.properties.Presigned) {
@@ -406,7 +406,7 @@
 		// If the certificate property is empty at this point, default_dev_cert must be set to true.
 		// Which makes processMainCert's behavior for the empty cert string WAI.
 		_, _, certificates := collectAppDeps(ctx, a, false, false)
-		a.certificate, certificates = processMainCert(a.ModuleBase, String(a.properties.Certificate), certificates, ctx)
+		a.certificate, certificates = processMainCert(a.ModuleBase, a.properties.Certificate.GetOrDefault(ctx, ""), certificates, ctx)
 		signed := android.PathForModuleOut(ctx, "signed", apkFilename)
 		var lineageFile android.Path
 		if lineage := String(a.properties.Lineage); lineage != "" {
diff --git a/java/base.go b/java/base.go
index 8dad2d9..3bf2e23 100644
--- a/java/base.go
+++ b/java/base.go
@@ -714,10 +714,10 @@
 
 // helper method for java modules to set OutputFilesProvider
 func setOutputFiles(ctx android.ModuleContext, m Module) {
-	ctx.SetOutputFiles(append(android.Paths{m.outputFile}, m.extraOutputFiles...), "")
-	ctx.SetOutputFiles(android.Paths{m.outputFile}, android.DefaultDistTag)
-	ctx.SetOutputFiles(android.Paths{m.implementationAndResourcesJar}, ".jar")
-	ctx.SetOutputFiles(android.Paths{m.headerJarFile}, ".hjar")
+	ctx.SetOutputFiles(append(android.PathsIfNonNil(m.outputFile), m.extraOutputFiles...), "")
+	ctx.SetOutputFiles(android.PathsIfNonNil(m.outputFile), android.DefaultDistTag)
+	ctx.SetOutputFiles(android.PathsIfNonNil(m.implementationAndResourcesJar), ".jar")
+	ctx.SetOutputFiles(android.PathsIfNonNil(m.headerJarFile), ".hjar")
 	if m.dexer.proguardDictionary.Valid() {
 		ctx.SetOutputFiles(android.Paths{m.dexer.proguardDictionary.Path()}, ".proguard_map")
 	}
@@ -766,7 +766,8 @@
 	apexInfo, _ := android.ModuleProvider(ctx, android.ApexInfoProvider)
 	isJacocoAgent := ctx.ModuleName() == "jacocoagent"
 
-	if j.DirectlyInAnyApex() && !isJacocoAgent && !apexInfo.IsForPlatform() {
+	compileDex := Bool(j.dexProperties.Compile_dex) || Bool(j.properties.Installable)
+	if compileDex && !isJacocoAgent && !apexInfo.IsForPlatform() {
 		if !inList(ctx.ModuleName(), config.InstrumentFrameworkModules) {
 			return true
 		} else if ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") {
@@ -1735,7 +1736,12 @@
 
 	completeStaticLibsImplementationJarsToCombine := completeStaticLibsImplementationJars
 
-	if j.shouldInstrument(ctx) {
+	apexInfo, _ := android.ModuleProvider(ctx, android.ApexInfoProvider)
+
+	// Enable dex compilation for the APEX variants, unless it is disabled explicitly
+	compileDex := Bool(j.dexProperties.Compile_dex) || Bool(j.properties.Installable)
+
+	if j.shouldInstrument(ctx) && (!ctx.Device() || compileDex) {
 		instrumentedOutputFile := j.instrument(ctx, flags, outputFile, jarName, specs)
 		completeStaticLibsImplementationJarsToCombine = depset.New(depset.PREORDER, android.Paths{instrumentedOutputFile}, nil)
 		outputFile = instrumentedOutputFile
@@ -1764,19 +1770,7 @@
 
 	j.implementationAndResourcesJar = outputFile
 
-	// Enable dex compilation for the APEX variants, unless it is disabled explicitly
-	compileDex := j.dexProperties.Compile_dex
-	apexInfo, _ := android.ModuleProvider(ctx, android.ApexInfoProvider)
-	if j.DirectlyInAnyApex() && !apexInfo.IsForPlatform() {
-		if compileDex == nil {
-			compileDex = proptools.BoolPtr(true)
-		}
-		if j.deviceProperties.Hostdex == nil {
-			j.deviceProperties.Hostdex = proptools.BoolPtr(true)
-		}
-	}
-
-	if ctx.Device() && (Bool(j.properties.Installable) || Bool(compileDex)) {
+	if ctx.Device() && compileDex {
 		if j.hasCode(ctx) {
 			if j.shouldInstrumentStatic(ctx) {
 				j.dexer.extraProguardFlagsFiles = append(j.dexer.extraProguardFlagsFiles,
@@ -2328,7 +2322,10 @@
 		"stable.core.platform.api.stubs",
 		"stub-annotations", "private-stub-annotations-jar",
 		"core-lambda-stubs",
-		"core-generated-annotation-stubs":
+		"core-generated-annotation-stubs",
+		// jacocoagent only uses core APIs, but has to specify a non-core sdk_version so it can use
+		// a prebuilt SDK to avoid circular dependencies when it statically included in the bootclasspath.
+		"jacocoagent":
 		return javaCore, true
 	case android.SdkPublic.DefaultJavaLibraryName():
 		return javaSdk, true
diff --git a/java/dex.go b/java/dex.go
index dea71f5..983377e 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -295,7 +295,7 @@
 	return d8Flags, d8Deps, artProfileOutput
 }
 
-func (d *dexer) r8Flags(ctx android.ModuleContext, dexParams *compileDexParams) (r8Flags []string, r8Deps android.Paths, artProfileOutput *android.OutputPath) {
+func (d *dexer) r8Flags(ctx android.ModuleContext, dexParams *compileDexParams, debugMode bool) (r8Flags []string, r8Deps android.Paths, artProfileOutput *android.OutputPath) {
 	flags := dexParams.flags
 	opt := d.dexProperties.Optimize
 
@@ -363,7 +363,9 @@
 		r8Flags = append(r8Flags, "--force-proguard-compatibility")
 	}
 
-	if Bool(opt.Optimize) || Bool(opt.Obfuscate) {
+	// Avoid unnecessary stack frame noise by only injecting source map ids for non-debug
+	// optimized or obfuscated targets.
+	if (Bool(opt.Optimize) || Bool(opt.Obfuscate)) && !debugMode {
 		// TODO(b/213833843): Allow configuration of the prefix via a build variable.
 		var sourceFilePrefix = "go/retraceme "
 		var sourceFileTemplate = "\"" + sourceFilePrefix + "%MAP_ID\""
@@ -483,7 +485,8 @@
 			proguardUsageZip,
 			proguardConfiguration,
 		}
-		r8Flags, r8Deps, r8ArtProfileOutputPath := d.r8Flags(ctx, dexParams)
+		debugMode := android.InList("--debug", commonFlags)
+		r8Flags, r8Deps, r8ArtProfileOutputPath := d.r8Flags(ctx, dexParams, debugMode)
 		rule := r8
 		args := map[string]string{
 			"r8Flags":        strings.Join(append(commonFlags, r8Flags...), " "),
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 8271392..2dda72b 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -578,7 +578,6 @@
 
 	rule.Build("javadoc", "javadoc")
 
-	ctx.SetOutputFiles(android.Paths{j.stubsSrcJar}, "")
 	ctx.SetOutputFiles(android.Paths{j.docZip}, ".docs.zip")
 }
 
diff --git a/java/droidstubs.go b/java/droidstubs.go
index cf3e219..bc26527 100644
--- a/java/droidstubs.go
+++ b/java/droidstubs.go
@@ -1011,7 +1011,7 @@
 			cmd.FlagWithOutput("--update-baseline:api-lint ", updatedBaselineOutput)
 
 			msg += fmt.Sprintf(``+
-				`3. FOR LSC ONLY: You can update the baseline by executing\n` +
+				`3. FOR LSC ONLY: You can update the baseline by executing\n`+
 				`   the following command:\n`+
 				`       (cd $ANDROID_BUILD_TOP && cp \\\n`+
 				`       "%s" \\\n`+
@@ -1374,7 +1374,7 @@
 		for _, stubType := range android.SortedKeys(stubsTypeToPrefix) {
 			tagWithPrefix := stubsTypeToPrefix[stubType] + tag
 			outputFile, err := tagToOutputFileFunc[tag](stubType)
-			if err == nil {
+			if err == nil && outputFile != nil {
 				ctx.SetOutputFiles(android.Paths{outputFile}, tagWithPrefix)
 			}
 		}
diff --git a/java/java_test.go b/java/java_test.go
index 54eb3e1..d415679 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -3050,6 +3050,7 @@
 		java_library {
 			name: "android.car",
 			srcs: ["android.car.java"],
+			installable: true,
 		}
 	`)
 
diff --git a/java/rro.go b/java/rro.go
index 8bb9be2..f225e1f 100644
--- a/java/rro.go
+++ b/java/rro.go
@@ -50,7 +50,7 @@
 type RuntimeResourceOverlayProperties struct {
 	// the name of a certificate in the default certificate directory or an android_app_certificate
 	// module name in the form ":module".
-	Certificate *string
+	Certificate proptools.Configurable[string] `android:"replace_instead_of_append"`
 
 	// Name of the signing certificate lineage file.
 	Lineage *string
@@ -119,7 +119,7 @@
 		r.aapt.deps(ctx, sdkDep)
 	}
 
-	cert := android.SrcIsModule(String(r.properties.Certificate))
+	cert := android.SrcIsModule(r.properties.Certificate.GetOrDefault(ctx, ""))
 	if cert != "" {
 		ctx.AddDependency(ctx.Module(), certificateTag, cert)
 	}
@@ -166,7 +166,7 @@
 
 	// Sign the built package
 	_, _, certificates := collectAppDeps(ctx, r, false, false)
-	r.certificate, certificates = processMainCert(r.ModuleBase, String(r.properties.Certificate), certificates, ctx)
+	r.certificate, certificates = processMainCert(r.ModuleBase, r.properties.Certificate.GetOrDefault(ctx, ""), certificates, ctx)
 	signed := android.PathForModuleOut(ctx, "signed", r.Name()+".apk")
 	var lineageFile android.Path
 	if lineage := String(r.properties.Lineage); lineage != "" {
diff --git a/java/testing.go b/java/testing.go
index 988514d..cb3245b 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -190,6 +190,7 @@
 				"//apex_available:anyapex",
 				"//apex_available:platform",
 			],
+			compile_dex: true,
 		}
 	`)),
 )
diff --git a/ui/build/soong.go b/ui/build/soong.go
index e6d01dd..0963f76 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -433,13 +433,13 @@
 	}
 }
 
-func updateSymlinks(ctx Context, dir, prevCWD, cwd string) error {
+func updateSymlinks(ctx Context, dir, prevCWD, cwd string, updateSemaphore chan struct{}) error {
 	defer symlinkWg.Done()
 
 	visit := func(path string, d fs.DirEntry, err error) error {
 		if d.IsDir() && path != dir {
 			symlinkWg.Add(1)
-			go updateSymlinks(ctx, path, prevCWD, cwd)
+			go updateSymlinks(ctx, path, prevCWD, cwd, updateSemaphore)
 			return filepath.SkipDir
 		}
 		f, err := d.Info()
@@ -470,12 +470,27 @@
 		return nil
 	}
 
+	<-updateSemaphore
+	defer func() { updateSemaphore <- struct{}{} }()
 	if err := filepath.WalkDir(dir, visit); err != nil {
 		return err
 	}
 	return nil
 }
 
+// b/376466642: If the concurrency of updateSymlinks is unbounded, Go's runtime spawns a
+// theoretically unbounded number of threads to handle blocking syscalls. This causes the runtime to
+// panic due to hitting thread limits in rare cases. Limiting to GOMAXPROCS concurrent symlink
+// updates should make this a non-issue.
+func newUpdateSemaphore() chan struct{} {
+	numPermits := runtime.GOMAXPROCS(0)
+	c := make(chan struct{}, numPermits)
+	for i := 0; i < numPermits; i++ {
+		c <- struct{}{}
+	}
+	return c
+}
+
 func fixOutDirSymlinks(ctx Context, config Config, outDir string) error {
 	cwd, err := os.Getwd()
 	if err != nil {
@@ -508,7 +523,7 @@
 	}
 
 	symlinkWg.Add(1)
-	if err := updateSymlinks(ctx, outDir, prevCWD, cwd); err != nil {
+	if err := updateSymlinks(ctx, outDir, prevCWD, cwd, newUpdateSemaphore()); err != nil {
 		return err
 	}
 	symlinkWg.Wait()
diff --git a/ui/metrics/Android.bp b/ui/metrics/Android.bp
index 77871fc..591e3cc 100644
--- a/ui/metrics/Android.bp
+++ b/ui/metrics/Android.bp
@@ -26,6 +26,7 @@
         "soong-ui-metrics_proto",
         "soong-ui-mk_metrics_proto",
         "soong-shared",
+        "soong-ui-metrics_combined_proto",
     ],
     srcs: [
         "hostinfo.go",
@@ -63,6 +64,19 @@
 }
 
 bootstrap_go_package {
+    name: "soong-ui-metrics_combined_proto",
+    pkgPath: "android/soong/ui/metrics/combined_metrics_proto",
+    deps: [
+        "golang-protobuf-reflect-protoreflect",
+        "golang-protobuf-runtime-protoimpl",
+        "soong-cmd-find_input_delta-proto",
+    ],
+    srcs: [
+        "metrics_proto/metrics.pb.go",
+    ],
+}
+
+bootstrap_go_package {
     name: "soong-ui-metrics_upload_proto",
     pkgPath: "android/soong/ui/metrics/upload_proto",
     deps: [
diff --git a/ui/metrics/metrics_proto/combined_metrics.pb.go b/ui/metrics/metrics_proto/combined_metrics.pb.go
new file mode 100644
index 0000000..f49d64d
--- /dev/null
+++ b/ui/metrics/metrics_proto/combined_metrics.pb.go
@@ -0,0 +1,239 @@
+// Copyright 2018 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.33.0
+// 	protoc        v3.21.12
+// source: combined_metrics.proto
+
+package metrics_proto
+
+import (
+	find_input_delta_proto "android/soong/cmd/find_input_delta/find_input_delta_proto"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// These field numbers are also found in the inner message declarations.
+// We verify that the values are the same, and that every enum value is checked
+// in combined_metrics_test.go.
+// Do not change this enum without also updating:
+//   - the submessage's .proto file
+//   - combined_metrics_test.go
+type FieldNumbers int32
+
+const (
+	FieldNumbers_FIELD_NUMBERS_UNSPECIFIED FieldNumbers = 0
+	FieldNumbers_FIELD_NUMBERS_FILE_LIST   FieldNumbers = 1
+)
+
+// Enum value maps for FieldNumbers.
+var (
+	FieldNumbers_name = map[int32]string{
+		0: "FIELD_NUMBERS_UNSPECIFIED",
+		1: "FIELD_NUMBERS_FILE_LIST",
+	}
+	FieldNumbers_value = map[string]int32{
+		"FIELD_NUMBERS_UNSPECIFIED": 0,
+		"FIELD_NUMBERS_FILE_LIST":   1,
+	}
+)
+
+func (x FieldNumbers) Enum() *FieldNumbers {
+	p := new(FieldNumbers)
+	*p = x
+	return p
+}
+
+func (x FieldNumbers) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (FieldNumbers) Descriptor() protoreflect.EnumDescriptor {
+	return file_combined_metrics_proto_enumTypes[0].Descriptor()
+}
+
+func (FieldNumbers) Type() protoreflect.EnumType {
+	return &file_combined_metrics_proto_enumTypes[0]
+}
+
+func (x FieldNumbers) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Do not use.
+func (x *FieldNumbers) UnmarshalJSON(b []byte) error {
+	num, err := protoimpl.X.UnmarshalJSONEnum(x.Descriptor(), b)
+	if err != nil {
+		return err
+	}
+	*x = FieldNumbers(num)
+	return nil
+}
+
+// Deprecated: Use FieldNumbers.Descriptor instead.
+func (FieldNumbers) EnumDescriptor() ([]byte, []int) {
+	return file_combined_metrics_proto_rawDescGZIP(), []int{0}
+}
+
+type SoongCombinedMetrics struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// cmd/find_input_delta/find_input_delta_proto.FileList
+	FileList *find_input_delta_proto.FileList `protobuf:"bytes,1,opt,name=file_list,json=fileList" json:"file_list,omitempty"`
+}
+
+func (x *SoongCombinedMetrics) Reset() {
+	*x = SoongCombinedMetrics{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_combined_metrics_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SoongCombinedMetrics) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SoongCombinedMetrics) ProtoMessage() {}
+
+func (x *SoongCombinedMetrics) ProtoReflect() protoreflect.Message {
+	mi := &file_combined_metrics_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SoongCombinedMetrics.ProtoReflect.Descriptor instead.
+func (*SoongCombinedMetrics) Descriptor() ([]byte, []int) {
+	return file_combined_metrics_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *SoongCombinedMetrics) GetFileList() *find_input_delta_proto.FileList {
+	if x != nil {
+		return x.FileList
+	}
+	return nil
+}
+
+var File_combined_metrics_proto protoreflect.FileDescriptor
+
+var file_combined_metrics_proto_rawDesc = []byte{
+	0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x62, 0x69, 0x6e, 0x65, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69,
+	0x63, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x13, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f,
+	0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x1a, 0x3b, 0x63,
+	0x6d, 0x64, 0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64, 0x65,
+	0x6c, 0x74, 0x61, 0x2f, 0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64,
+	0x65, 0x6c, 0x74, 0x61, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x66, 0x69, 0x6c, 0x65, 0x5f,
+	0x6c, 0x69, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x5d, 0x0a, 0x14, 0x53, 0x6f,
+	0x6f, 0x6e, 0x67, 0x43, 0x6f, 0x6d, 0x62, 0x69, 0x6e, 0x65, 0x64, 0x4d, 0x65, 0x74, 0x72, 0x69,
+	0x63, 0x73, 0x12, 0x45, 0x0a, 0x09, 0x66, 0x69, 0x6c, 0x65, 0x5f, 0x6c, 0x69, 0x73, 0x74, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x28, 0x2e, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2e,
+	0x66, 0x69, 0x6e, 0x64, 0x5f, 0x69, 0x6e, 0x70, 0x75, 0x74, 0x5f, 0x64, 0x65, 0x6c, 0x74, 0x61,
+	0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x46, 0x69, 0x6c, 0x65, 0x4c, 0x69, 0x73, 0x74, 0x52,
+	0x08, 0x66, 0x69, 0x6c, 0x65, 0x4c, 0x69, 0x73, 0x74, 0x2a, 0x4a, 0x0a, 0x0c, 0x46, 0x69, 0x65,
+	0x6c, 0x64, 0x4e, 0x75, 0x6d, 0x62, 0x65, 0x72, 0x73, 0x12, 0x1d, 0x0a, 0x19, 0x46, 0x49, 0x45,
+	0x4c, 0x44, 0x5f, 0x4e, 0x55, 0x4d, 0x42, 0x45, 0x52, 0x53, 0x5f, 0x55, 0x4e, 0x53, 0x50, 0x45,
+	0x43, 0x49, 0x46, 0x49, 0x45, 0x44, 0x10, 0x00, 0x12, 0x1b, 0x0a, 0x17, 0x46, 0x49, 0x45, 0x4c,
+	0x44, 0x5f, 0x4e, 0x55, 0x4d, 0x42, 0x45, 0x52, 0x53, 0x5f, 0x46, 0x49, 0x4c, 0x45, 0x5f, 0x4c,
+	0x49, 0x53, 0x54, 0x10, 0x01, 0x42, 0x28, 0x5a, 0x26, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64,
+	0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x75, 0x69, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63,
+	0x73, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+}
+
+var (
+	file_combined_metrics_proto_rawDescOnce sync.Once
+	file_combined_metrics_proto_rawDescData = file_combined_metrics_proto_rawDesc
+)
+
+func file_combined_metrics_proto_rawDescGZIP() []byte {
+	file_combined_metrics_proto_rawDescOnce.Do(func() {
+		file_combined_metrics_proto_rawDescData = protoimpl.X.CompressGZIP(file_combined_metrics_proto_rawDescData)
+	})
+	return file_combined_metrics_proto_rawDescData
+}
+
+var file_combined_metrics_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_combined_metrics_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_combined_metrics_proto_goTypes = []interface{}{
+	(FieldNumbers)(0),                       // 0: soong_build_metrics.FieldNumbers
+	(*SoongCombinedMetrics)(nil),            // 1: soong_build_metrics.SoongCombinedMetrics
+	(*find_input_delta_proto.FileList)(nil), // 2: android.find_input_delta_proto.FileList
+}
+var file_combined_metrics_proto_depIdxs = []int32{
+	2, // 0: soong_build_metrics.SoongCombinedMetrics.file_list:type_name -> android.find_input_delta_proto.FileList
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_combined_metrics_proto_init() }
+func file_combined_metrics_proto_init() {
+	if File_combined_metrics_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_combined_metrics_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SoongCombinedMetrics); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_combined_metrics_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_combined_metrics_proto_goTypes,
+		DependencyIndexes: file_combined_metrics_proto_depIdxs,
+		EnumInfos:         file_combined_metrics_proto_enumTypes,
+		MessageInfos:      file_combined_metrics_proto_msgTypes,
+	}.Build()
+	File_combined_metrics_proto = out.File
+	file_combined_metrics_proto_rawDesc = nil
+	file_combined_metrics_proto_goTypes = nil
+	file_combined_metrics_proto_depIdxs = nil
+}
diff --git a/ui/metrics/metrics_proto/combined_metrics.proto b/ui/metrics/metrics_proto/combined_metrics.proto
new file mode 100644
index 0000000..3cd9a53
--- /dev/null
+++ b/ui/metrics/metrics_proto/combined_metrics.proto
@@ -0,0 +1,36 @@
+// Copyright 2018 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto2";
+
+package soong_build_metrics;
+option go_package = "android/soong/ui/metrics/metrics_proto";
+
+import "cmd/find_input_delta/find_input_delta_proto/file_list.proto";
+
+// These field numbers are also found in the inner message declarations.
+// We verify that the values are the same, and that every enum value is checked
+// in combined_metrics_test.go.
+// Do not change this enum without also updating:
+//  - the submessage's .proto file
+//  - combined_metrics_test.go
+enum FieldNumbers {
+  FIELD_NUMBERS_UNSPECIFIED = 0;
+  FIELD_NUMBERS_FILE_LIST = 1;
+}
+
+message SoongCombinedMetrics {
+  // cmd/find_input_delta/find_input_delta_proto.FileList
+  optional android.find_input_delta_proto.FileList file_list = 1;
+}
diff --git a/ui/metrics/metrics_proto/combined_metrics_test.go b/ui/metrics/metrics_proto/combined_metrics_test.go
new file mode 100644
index 0000000..eedb12a
--- /dev/null
+++ b/ui/metrics/metrics_proto/combined_metrics_test.go
@@ -0,0 +1,33 @@
+package metrics_proto
+
+import (
+	"testing"
+
+	find_input_delta_proto "android/soong/cmd/find_input_delta/find_input_delta_proto"
+)
+
+func TestCombinedMetricsMessageNums(t *testing.T) {
+	testCases := []struct {
+		Name         string
+		FieldNumbers map[string]int32
+	}{
+		{
+			Name:         "find_input_delta_proto",
+			FieldNumbers: find_input_delta_proto.FieldNumbers_value,
+		},
+	}
+	verifiedMap := make(map[string]bool)
+	for _, tc := range testCases {
+		for k, v := range tc.FieldNumbers {
+			if FieldNumbers_value[k] != v {
+				t.Errorf("%s: Expected FieldNumbers.%s == %v, found %v", tc.Name, k, FieldNumbers_value[k], v)
+			}
+			verifiedMap[k] = true
+		}
+	}
+	for k, v := range FieldNumbers_value {
+		if !verifiedMap[k] {
+			t.Errorf("No test case verifies FieldNumbers.%s=%v", k, v)
+		}
+	}
+}
diff --git a/ui/metrics/metrics_proto/regen.sh b/ui/metrics/metrics_proto/regen.sh
index 8eb2d74..5e5f9b8 100755
--- a/ui/metrics/metrics_proto/regen.sh
+++ b/ui/metrics/metrics_proto/regen.sh
@@ -12,6 +12,6 @@
   die "could not find aprotoc. ${error_msg}"
 fi
 
-if ! aprotoc --go_out=paths=source_relative:. metrics.proto; then
+if ! aprotoc --go_out=paths=source_relative:. -I .:../../.. metrics.proto combined_metrics.proto; then
   die "build failed. ${error_msg}"
 fi