// Copyright (C) 2021 The Android Open Source Project // // 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. package java import ( "fmt" "io" "path/filepath" "reflect" "strings" "android/soong/android" "android/soong/dexpreopt" "github.com/google/blueprint/proptools" "github.com/google/blueprint" ) func init() { registerBootclasspathFragmentBuildComponents(android.InitRegistrationContext) android.RegisterSdkMemberType(BootclasspathFragmentSdkMemberType) } func registerBootclasspathFragmentBuildComponents(ctx android.RegistrationContext) { ctx.RegisterModuleType("bootclasspath_fragment", bootclasspathFragmentFactory) ctx.RegisterModuleType("bootclasspath_fragment_test", testBootclasspathFragmentFactory) ctx.RegisterModuleType("prebuilt_bootclasspath_fragment", prebuiltBootclasspathFragmentFactory) } // BootclasspathFragmentSdkMemberType is the member type used to add bootclasspath_fragments to // the SDK snapshot. It is exported for use by apex. var BootclasspathFragmentSdkMemberType = &bootclasspathFragmentMemberType{ SdkMemberTypeBase: android.SdkMemberTypeBase{ PropertyName: "bootclasspath_fragments", SupportsSdk: true, }, } type bootclasspathFragmentContentDependencyTag struct { blueprint.BaseDependencyTag } // Avoid having to make bootclasspath_fragment content visible to the bootclasspath_fragment. // // This is a temporary workaround to make it easier to migrate to bootclasspath_fragment modules // with proper dependencies. // TODO(b/177892522): Remove this and add needed visibility. func (b bootclasspathFragmentContentDependencyTag) ExcludeFromVisibilityEnforcement() { } // The bootclasspath_fragment contents must never depend on prebuilts. func (b bootclasspathFragmentContentDependencyTag) ReplaceSourceWithPrebuilt() bool { return false } // SdkMemberType causes dependencies added with this tag to be automatically added to the sdk as if // they were specified using java_boot_libs or java_sdk_libs. func (b bootclasspathFragmentContentDependencyTag) SdkMemberType(child android.Module) android.SdkMemberType { // If the module is a java_sdk_library then treat it as if it was specified in the java_sdk_libs // property, otherwise treat if it was specified in the java_boot_libs property. if javaSdkLibrarySdkMemberType.IsInstance(child) { return javaSdkLibrarySdkMemberType } return javaBootLibsSdkMemberType } func (b bootclasspathFragmentContentDependencyTag) ExportMember() bool { return true } // Contents of bootclasspath fragments in an apex are considered to be directly in the apex, as if // they were listed in java_libs. func (b bootclasspathFragmentContentDependencyTag) CopyDirectlyInAnyApex() {} // Contents of bootclasspath fragments require files from prebuilt apex files. func (b bootclasspathFragmentContentDependencyTag) RequiresFilesFromPrebuiltApex() {} // The tag used for the dependency between the bootclasspath_fragment module and its contents. var bootclasspathFragmentContentDepTag = bootclasspathFragmentContentDependencyTag{} var _ android.ExcludeFromVisibilityEnforcementTag = bootclasspathFragmentContentDepTag var _ android.ReplaceSourceWithPrebuilt = bootclasspathFragmentContentDepTag var _ android.SdkMemberDependencyTag = bootclasspathFragmentContentDepTag var _ android.CopyDirectlyInAnyApexTag = bootclasspathFragmentContentDepTag var _ android.RequiresFilesFromPrebuiltApexTag = bootclasspathFragmentContentDepTag func IsBootclasspathFragmentContentDepTag(tag blueprint.DependencyTag) bool { return tag == bootclasspathFragmentContentDepTag } // Properties that can be different when coverage is enabled. type BootclasspathFragmentCoverageAffectedProperties struct { // The contents of this bootclasspath_fragment, could be either java_library, or java_sdk_library. // // A java_sdk_library specified here will also be treated as if it was specified on the stub_libs // property. // // The order of this list matters as it is the order that is used in the bootclasspath. Contents []string // The properties for specifying the API stubs provided by this fragment. BootclasspathAPIProperties } type bootclasspathFragmentProperties struct { // The name of the image this represents. // // If specified then it must be one of "art" or "boot". Image_name *string // Properties whose values need to differ with and without coverage. BootclasspathFragmentCoverageAffectedProperties Coverage BootclasspathFragmentCoverageAffectedProperties // Hidden API related properties. HiddenAPIFlagFileProperties // The list of additional stub libraries which this fragment's contents use but which are not // provided by another bootclasspath_fragment. // // Note, "android-non-updatable" is treated specially. While no such module exists it is treated // as if it was a java_sdk_library. So, when public API stubs are needed then it will be replaced // with "android-non-updatable.stubs", with "androidn-non-updatable.system.stubs" when the system // stubs are needed and so on. Additional_stubs []string // Properties that allow a fragment to depend on other fragments. This is needed for hidden API // processing as it needs access to all the classes used by a fragment including those provided // by other fragments. BootclasspathFragmentsDepsProperties } type HiddenAPIPackageProperties struct { Hidden_api struct { // Contains prefixes of a package hierarchy that is provided solely by this // bootclasspath_fragment. // // This affects the signature patterns file that is used to select the subset of monolithic // hidden API flags. See split_packages property for more details. Package_prefixes []string // A list of individual packages that are provided solely by this // bootclasspath_fragment but which cannot be listed in package_prefixes // because there are sub-packages which are provided by other modules. // // This should only be used for legacy packages. New packages should be // covered by a package prefix. Single_packages []string // The list of split packages provided by this bootclasspath_fragment. // // A split package is one that contains classes which are provided by multiple // bootclasspath_fragment modules. // // This defaults to "*" - which treats all packages as being split. A module that has no split // packages must specify an empty list. // // This affects the signature patterns file that is generated by a bootclasspath_fragment and // used to select the subset of monolithic hidden API flags against which the flags generated // by the bootclasspath_fragment are compared. // // The signature patterns file selects the subset of monolithic hidden API flags using a number // of patterns, i.e.: // * The qualified name (including package) of an outermost class, e.g. java/lang/Character. // This selects all the flags for all the members of this class and any nested classes. // * A package wildcard, e.g. java/lang/*. This selects all the flags for all the members of all // the classes in this package (but not in sub-packages). // * A recursive package wildcard, e.g. java/**. This selects all the flags for all the members // of all the classes in this package and sub-packages. // // The signature patterns file is constructed as follows: // * All the signatures are retrieved from the all-flags.csv file. // * The member and inner class names are removed. // * If a class is in a split package then that is kept, otherwise the class part is removed // and replaced with a wildcard, i.e. *. // * If a package matches a package prefix then the package is removed. // * All the package prefixes are added with a recursive wildcard appended to each, i.e. **. // * The resulting patterns are sorted. // // So, by default (i.e. without specifying any package_prefixes or split_packages) the signature // patterns is a list of class names, because there are no package packages and all packages are // assumed to be split. // // If any split packages are specified then only those packages are treated as split and all // other packages are treated as belonging solely to the bootclasspath_fragment and so they use // wildcard package patterns. // // So, if an empty list of split packages is specified then the signature patterns file just // includes a wildcard package pattern for every package provided by the bootclasspath_fragment. // // If split_packages are specified and a package that is split is not listed then it could lead // to build failures as it will select monolithic flags that are generated by another // bootclasspath_fragment to compare against the flags provided by this fragment. The latter // will obviously not contain those flags and that can cause the comparison and build to fail. // // If any package prefixes are specified then any matching packages are removed from the // signature patterns and replaced with a single recursive package pattern. // // It is not strictly necessary to specify either package_prefixes or split_packages as the // defaults will produce a valid set of signature patterns. However, those patterns may include // implementation details, e.g. names of implementation classes or packages, which will be // exported to the sdk snapshot in the signature patterns file. That is something that should be // avoided where possible. Specifying package_prefixes and split_packages allows those // implementation details to be excluded from the snapshot. Split_packages []string } } type SourceOnlyBootclasspathProperties struct { HiddenAPIPackageProperties Coverage HiddenAPIPackageProperties } type BootclasspathFragmentModule struct { android.ModuleBase android.ApexModuleBase ClasspathFragmentBase // True if this fragment is for testing purposes. testFragment bool properties bootclasspathFragmentProperties sourceOnlyProperties SourceOnlyBootclasspathProperties // Collect the module directory for IDE info in java/jdeps.go. modulePaths []string // Path to the boot image profile. profilePath android.Path } // commonBootclasspathFragment defines the methods that are implemented by both source and prebuilt // bootclasspath fragment modules. type commonBootclasspathFragment interface { // produceHiddenAPIOutput produces the all-flags.csv and intermediate files and encodes the flags // into dex files. // // Returns a *HiddenAPIOutput containing the paths for the generated files. Returns nil if the // module cannot contribute to hidden API processing, e.g. because it is a prebuilt module in a // versioned sdk. produceHiddenAPIOutput(ctx android.ModuleContext, contents []android.Module, fragments []android.Module, input HiddenAPIFlagInput) *HiddenAPIOutput // produceBootImageFiles will attempt to produce rules to create the boot image files at the paths // predefined in the bootImageConfig. // // If it could not create the files then it will return nil. Otherwise, it will return a map from // android.ArchType to the predefined paths of the boot image files. produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs // getImageName returns the `image_name` property of this fragment. getImageName() *string // getProfilePath returns the path to the boot image profile. getProfilePath() android.Path } var _ commonBootclasspathFragment = (*BootclasspathFragmentModule)(nil) func bootclasspathFragmentFactory() android.Module { m := &BootclasspathFragmentModule{} m.AddProperties(&m.properties, &m.sourceOnlyProperties) android.InitApexModule(m) initClasspathFragment(m, BOOTCLASSPATH) android.InitAndroidArchModule(m, android.DeviceSupported, android.MultilibCommon) android.AddLoadHook(m, func(ctx android.LoadHookContext) { // If code coverage has been enabled for the framework then append the properties with // coverage specific properties. if ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") { err := proptools.AppendProperties(&m.properties.BootclasspathFragmentCoverageAffectedProperties, &m.properties.Coverage, nil) if err != nil { ctx.PropertyErrorf("coverage", "error trying to append coverage specific properties: %s", err) return } err = proptools.AppendProperties(&m.sourceOnlyProperties.HiddenAPIPackageProperties, &m.sourceOnlyProperties.Coverage, nil) if err != nil { ctx.PropertyErrorf("coverage", "error trying to append hidden api coverage specific properties: %s", err) return } } // Initialize the contents property from the image_name. bootclasspathFragmentInitContentsFromImage(ctx, m) }) return m } func testBootclasspathFragmentFactory() android.Module { m := bootclasspathFragmentFactory().(*BootclasspathFragmentModule) m.testFragment = true return m } // bootclasspathFragmentInitContentsFromImage will initialize the contents property from the image_name if // necessary. func bootclasspathFragmentInitContentsFromImage(ctx android.EarlyModuleContext, m *BootclasspathFragmentModule) { contents := m.properties.Contents if len(contents) == 0 { ctx.PropertyErrorf("contents", "required property is missing") return } if m.properties.Image_name == nil { // Nothing to do. return } imageName := proptools.String(m.properties.Image_name) if imageName != "art" { ctx.PropertyErrorf("image_name", `unknown image name %q, expected "art"`, imageName) return } // Get the configuration for the art apex jars. Do not use getImageConfig(ctx) here as this is // too early in the Soong processing for that to work. global := dexpreopt.GetGlobalConfig(ctx) modules := global.ArtApexJars // Make sure that the apex specified in the configuration is consistent and is one for which // this boot image is available. commonApex := "" for i := 0; i < modules.Len(); i++ { apex := modules.Apex(i) jar := modules.Jar(i) if apex == "platform" { ctx.ModuleErrorf("ArtApexJars is invalid as it requests a platform variant of %q", jar) continue } if !m.AvailableFor(apex) { ctx.ModuleErrorf("ArtApexJars configuration incompatible with this module, ArtApexJars expects this to be in apex %q but this is only in apexes %q", apex, m.ApexAvailable()) continue } if commonApex == "" { commonApex = apex } else if commonApex != apex { ctx.ModuleErrorf("ArtApexJars configuration is inconsistent, expected all jars to be in the same apex but it specifies apex %q and %q", commonApex, apex) } } } // bootclasspathImageNameContentsConsistencyCheck checks that the configuration that applies to this // module (if any) matches the contents. // // This should be a noop as if image_name="art" then the contents will be set from the ArtApexJars // config by bootclasspathFragmentInitContentsFromImage so it will be guaranteed to match. However, // in future this will not be the case. func (b *BootclasspathFragmentModule) bootclasspathImageNameContentsConsistencyCheck(ctx android.BaseModuleContext) { imageName := proptools.String(b.properties.Image_name) if imageName == "art" { // Get the configuration for the art apex jars. modules := b.getImageConfig(ctx).modules configuredJars := modules.CopyOfJars() // Skip the check if the configured jars list is empty as that is a common configuration when // building targets that do not result in a system image. if len(configuredJars) == 0 { return } contents := b.properties.Contents if !reflect.DeepEqual(configuredJars, contents) { ctx.ModuleErrorf("inconsistency in specification of contents. ArtApexJars configuration specifies %#v, contents property specifies %#v", configuredJars, contents) } } } var BootclasspathFragmentApexContentInfoProvider = blueprint.NewProvider(BootclasspathFragmentApexContentInfo{}) // BootclasspathFragmentApexContentInfo contains the bootclasspath_fragments contributions to the // apex contents. type BootclasspathFragmentApexContentInfo struct { // The configured modules, will be empty if this is from a bootclasspath_fragment that does not // set image_name: "art". modules android.ConfiguredJarList // Map from the base module name (without prebuilt_ prefix) of a fragment's contents module to the // hidden API encoded dex jar path. contentModuleDexJarPaths bootDexJarByModule // Path to the image profile file on host (or empty, if profile is not generated). profilePathOnHost android.Path // Install path of the boot image profile if it needs to be installed in the APEX, or empty if not // needed. profileInstallPathInApex string } func (i BootclasspathFragmentApexContentInfo) Modules() android.ConfiguredJarList { return i.modules } // DexBootJarPathForContentModule returns the path to the dex boot jar for specified module. // // The dex boot jar is one which has had hidden API encoding performed on it. func (i BootclasspathFragmentApexContentInfo) DexBootJarPathForContentModule(module android.Module) (android.Path, error) { // A bootclasspath_fragment cannot use a prebuilt library so Name() will return the base name // without a prebuilt_ prefix so is safe to use as the key for the contentModuleDexJarPaths. name := module.Name() if dexJar, ok := i.contentModuleDexJarPaths[name]; ok { return dexJar, nil } else { return nil, fmt.Errorf("unknown bootclasspath_fragment content module %s, expected one of %s", name, strings.Join(android.SortedKeys(i.contentModuleDexJarPaths), ", ")) } } func (i BootclasspathFragmentApexContentInfo) ProfilePathOnHost() android.Path { return i.profilePathOnHost } func (i BootclasspathFragmentApexContentInfo) ProfileInstallPathInApex() string { return i.profileInstallPathInApex } func (b *BootclasspathFragmentModule) DepIsInSameApex(ctx android.BaseModuleContext, dep android.Module) bool { tag := ctx.OtherModuleDependencyTag(dep) if IsBootclasspathFragmentContentDepTag(tag) { // Boot image contents are automatically added to apex. return true } if android.IsMetaDependencyTag(tag) { // Cross-cutting metadata dependencies are metadata. return false } panic(fmt.Errorf("boot_image module %q should not have a dependency on %q via tag %s", b, dep, android.PrettyPrintTag(tag))) } func (b *BootclasspathFragmentModule) ShouldSupportSdkVersion(ctx android.BaseModuleContext, sdkVersion android.ApiLevel) error { return nil } // ComponentDepsMutator adds dependencies onto modules before any prebuilt modules without a // corresponding source module are renamed. This means that adding a dependency using a name without // a prebuilt_ prefix will always resolve to a source module and when using a name with that prefix // it will always resolve to a prebuilt module. func (b *BootclasspathFragmentModule) ComponentDepsMutator(ctx android.BottomUpMutatorContext) { module := ctx.Module() _, isSourceModule := module.(*BootclasspathFragmentModule) for _, name := range b.properties.Contents { // A bootclasspath_fragment must depend only on other source modules, while the // prebuilt_bootclasspath_fragment must only depend on other prebuilt modules. // // TODO(b/177892522) - avoid special handling of jacocoagent. if !isSourceModule && name != "jacocoagent" { name = android.PrebuiltNameFromSource(name) } ctx.AddDependency(module, bootclasspathFragmentContentDepTag, name) } } func (b *BootclasspathFragmentModule) DepsMutator(ctx android.BottomUpMutatorContext) { // Add dependencies onto all the modules that provide the API stubs for classes on this // bootclasspath fragment. hiddenAPIAddStubLibDependencies(ctx, b.properties.apiScopeToStubLibs()) for _, additionalStubModule := range b.properties.Additional_stubs { for _, apiScope := range hiddenAPISdkLibrarySupportedScopes { // Add a dependency onto a possibly scope specific stub library. scopeSpecificDependency := apiScope.scopeSpecificStubModule(ctx, additionalStubModule) tag := hiddenAPIStubsDependencyTag{apiScope: apiScope, fromAdditionalDependency: true} ctx.AddVariationDependencies(nil, tag, scopeSpecificDependency) } } if !dexpreopt.IsDex2oatNeeded(ctx) { return } // Add a dependency onto the dex2oat tool which is needed for creating the boot image. The // path is retrieved from the dependency by GetGlobalSoongConfig(ctx). dexpreopt.RegisterToolDeps(ctx) } func (b *BootclasspathFragmentModule) BootclasspathDepsMutator(ctx android.BottomUpMutatorContext) { // Add dependencies on all the fragments. b.properties.BootclasspathFragmentsDepsProperties.addDependenciesOntoFragments(ctx) } func (b *BootclasspathFragmentModule) GenerateAndroidBuildActions(ctx android.ModuleContext) { // Only perform a consistency check if this module is the active module. That will prevent an // unused prebuilt that was created without instrumentation from breaking an instrumentation // build. if isActiveModule(ctx.Module()) { b.bootclasspathImageNameContentsConsistencyCheck(ctx) } // Generate classpaths.proto config b.generateClasspathProtoBuildActions(ctx) // Collect the module directory for IDE info in java/jdeps.go. b.modulePaths = append(b.modulePaths, ctx.ModuleDir()) // Gather the bootclasspath fragment's contents. var contents []android.Module ctx.VisitDirectDeps(func(module android.Module) { tag := ctx.OtherModuleDependencyTag(module) if IsBootclasspathFragmentContentDepTag(tag) { contents = append(contents, module) } }) fragments := gatherApexModulePairDepsWithTag(ctx, bootclasspathFragmentDepTag) // Verify that the image_name specified on a bootclasspath_fragment is valid even if this is a // prebuilt which will not use the image config. imageConfig := b.getImageConfig(ctx) // Perform hidden API processing. hiddenAPIOutput := b.generateHiddenAPIBuildActions(ctx, contents, fragments) var bootImageFiles bootImageOutputs if imageConfig != nil { // Delegate the production of the boot image files to a module type specific method. common := ctx.Module().(commonBootclasspathFragment) bootImageFiles = common.produceBootImageFiles(ctx, imageConfig) b.profilePath = bootImageFiles.profile if shouldCopyBootFilesToPredefinedLocations(ctx, imageConfig) { // Zip the boot image files up, if available. This will generate the zip file in a // predefined location. buildBootImageZipInPredefinedLocation(ctx, imageConfig, bootImageFiles.byArch) // Copy the dex jars of this fragment's content modules to their predefined locations. copyBootJarsToPredefinedLocations(ctx, hiddenAPIOutput.EncodedBootDexFilesByModule, imageConfig.dexPathsByModule) } } // A prebuilt fragment cannot contribute to an apex. if !android.IsModulePrebuilt(ctx.Module()) { // Provide the apex content info. b.provideApexContentInfo(ctx, imageConfig, hiddenAPIOutput, bootImageFiles) } // In order for information about bootclasspath_fragment modules to be added to module-info.json // it is necessary to output an entry to Make. As bootclasspath_fragment modules are part of an // APEX there can be multiple variants, including the default/platform variant and only one can // be output to Make but it does not really matter which variant is output. The default/platform // variant is the first (ctx.PrimaryModule()) and is usually hidden from make so this just picks // the last variant (ctx.FinalModule()). if ctx.Module() != ctx.FinalModule() { b.HideFromMake() } } // shouldCopyBootFilesToPredefinedLocations determines whether the current module should copy boot // files, e.g. boot dex jars or boot image files, to the predefined location expected by the rest // of the build. // // This ensures that only a single module will copy its files to the image configuration. func shouldCopyBootFilesToPredefinedLocations(ctx android.ModuleContext, imageConfig *bootImageConfig) bool { // Bootclasspath fragment modules that are for the platform do not produce boot related files. apexInfo := ctx.Provider(android.ApexInfoProvider).(android.ApexInfo) if apexInfo.IsForPlatform() { return false } // If the image configuration has no modules specified then it means that the build has been // configured to build something other than a boot image, e.g. an sdk, so do not try and copy the // files. if imageConfig.modules.Len() == 0 { return false } // Only copy files from the module that is preferred. return isActiveModule(ctx.Module()) } // provideApexContentInfo creates, initializes and stores the apex content info for use by other // modules. func (b *BootclasspathFragmentModule) provideApexContentInfo(ctx android.ModuleContext, imageConfig *bootImageConfig, hiddenAPIOutput *HiddenAPIOutput, bootImageFiles bootImageOutputs) { // Construct the apex content info from the config. info := BootclasspathFragmentApexContentInfo{ // Populate the apex content info with paths to the dex jars. contentModuleDexJarPaths: hiddenAPIOutput.EncodedBootDexFilesByModule, } if imageConfig != nil { info.modules = imageConfig.modules global := dexpreopt.GetGlobalConfig(ctx) if !global.DisableGenerateProfile { info.profilePathOnHost = bootImageFiles.profile info.profileInstallPathInApex = imageConfig.profileInstallPathInApex } } // Make the apex content info available for other modules. ctx.SetProvider(BootclasspathFragmentApexContentInfoProvider, info) } // generateClasspathProtoBuildActions generates all required build actions for classpath.proto config func (b *BootclasspathFragmentModule) generateClasspathProtoBuildActions(ctx android.ModuleContext) { var classpathJars []classpathJar configuredJars := b.configuredJars(ctx) if "art" == proptools.String(b.properties.Image_name) { // ART and platform boot jars must have a corresponding entry in DEX2OATBOOTCLASSPATH classpathJars = configuredJarListToClasspathJars(ctx, configuredJars, BOOTCLASSPATH, DEX2OATBOOTCLASSPATH) } else { classpathJars = configuredJarListToClasspathJars(ctx, configuredJars, b.classpathType) } b.classpathFragmentBase().generateClasspathProtoBuildActions(ctx, configuredJars, classpathJars) } func (b *BootclasspathFragmentModule) configuredJars(ctx android.ModuleContext) android.ConfiguredJarList { if "art" == proptools.String(b.properties.Image_name) { return b.getImageConfig(ctx).modules } global := dexpreopt.GetGlobalConfig(ctx) possibleUpdatableModules := gatherPossibleApexModuleNamesAndStems(ctx, b.properties.Contents, bootclasspathFragmentContentDepTag) jars, unknown := global.ApexBootJars.Filter(possibleUpdatableModules) // TODO(satayev): for apex_test we want to include all contents unconditionally to classpaths // config. However, any test specific jars would not be present in ApexBootJars. Instead, // we should check if we are creating a config for apex_test via ApexInfo and amend the values. // This is an exception to support end-to-end test for SdkExtensions, until such support exists. if android.InList("test_framework-sdkextensions", possibleUpdatableModules) { jars = jars.Append("com.android.sdkext", "test_framework-sdkextensions") } else if android.InList("test_framework-apexd", possibleUpdatableModules) { jars = jars.Append("com.android.apex.test_package", "test_framework-apexd") } else if global.ApexBootJars.Len() != 0 { unknown = android.RemoveListFromList(unknown, b.properties.Coverage.Contents) _, unknown = android.RemoveFromList("core-icu4j", unknown) // This module only exists in car products. // So ignore it even if it is not in PRODUCT_APEX_BOOT_JARS. // TODO(b/202896428): Add better way to handle this. _, unknown = android.RemoveFromList("android.car-module", unknown) if len(unknown) > 0 { ctx.ModuleErrorf("%s in contents must also be declared in PRODUCT_APEX_BOOT_JARS", unknown) } } return jars } func (b *BootclasspathFragmentModule) getImageConfig(ctx android.EarlyModuleContext) *bootImageConfig { // Get a map of the image configs that are supported. imageConfigs := genBootImageConfigs(ctx) // Retrieve the config for this image. imageNamePtr := b.properties.Image_name if imageNamePtr == nil { return nil } imageName := *imageNamePtr imageConfig := imageConfigs[imageName] if imageConfig == nil { ctx.PropertyErrorf("image_name", "Unknown image name %q, expected one of %s", imageName, strings.Join(android.SortedKeys(imageConfigs), ", ")) return nil } return imageConfig } // generateHiddenAPIBuildActions generates all the hidden API related build rules. func (b *BootclasspathFragmentModule) generateHiddenAPIBuildActions(ctx android.ModuleContext, contents []android.Module, fragments []android.Module) *HiddenAPIOutput { // Create hidden API input structure. input := b.createHiddenAPIFlagInput(ctx, contents, fragments) // Delegate the production of the hidden API all-flags.csv file to a module type specific method. common := ctx.Module().(commonBootclasspathFragment) output := common.produceHiddenAPIOutput(ctx, contents, fragments, input) // If the source or prebuilts module does not provide a signature patterns file then generate one // from the flags. // TODO(b/192868581): Remove once the source and prebuilts provide a signature patterns file of // their own. if output.SignaturePatternsPath == nil { output.SignaturePatternsPath = buildRuleSignaturePatternsFile( ctx, output.AllFlagsPath, []string{"*"}, nil, nil, "") } // Initialize a HiddenAPIInfo structure. hiddenAPIInfo := HiddenAPIInfo{ // The monolithic hidden API processing needs access to the flag files that override the default // flags from all the fragments whether or not they actually perform their own hidden API flag // generation. That is because the monolithic hidden API processing uses those flag files to // perform its own flag generation. FlagFilesByCategory: input.FlagFilesByCategory, // Other bootclasspath_fragments that depend on this need the transitive set of stub dex jars // from this to resolve any references from their code to classes provided by this fragment // and the fragments this depends upon. TransitiveStubDexJarsByScope: input.transitiveStubDexJarsByScope(), } // The monolithic hidden API processing also needs access to all the output files produced by // hidden API processing of this fragment. hiddenAPIInfo.HiddenAPIFlagOutput = output.HiddenAPIFlagOutput // Provide it for use by other modules. ctx.SetProvider(HiddenAPIInfoProvider, hiddenAPIInfo) return output } // retrieveLegacyEncodedBootDexFiles attempts to retrieve the legacy encoded boot dex jar files. func retrieveLegacyEncodedBootDexFiles(ctx android.ModuleContext, contents []android.Module) bootDexJarByModule { // If the current bootclasspath_fragment is the active module or a source module then retrieve the // encoded dex files, otherwise return an empty map. // // An inactive (i.e. not preferred) bootclasspath_fragment needs to retrieve the encoded dex jars // as they are still needed by an apex. An inactive prebuilt_bootclasspath_fragment does not need // to do so and may not yet have access to dex boot jars from a prebuilt_apex/apex_set. if isActiveModule(ctx.Module()) || !android.IsModulePrebuilt(ctx.Module()) { return extractEncodedDexJarsFromModules(ctx, contents) } else { return nil } } // createHiddenAPIFlagInput creates a HiddenAPIFlagInput struct and initializes it with information derived // from the properties on this module and its dependencies. func (b *BootclasspathFragmentModule) createHiddenAPIFlagInput(ctx android.ModuleContext, contents []android.Module, fragments []android.Module) HiddenAPIFlagInput { // Merge the HiddenAPIInfo from all the fragment dependencies. dependencyHiddenApiInfo := newHiddenAPIInfo() dependencyHiddenApiInfo.mergeFromFragmentDeps(ctx, fragments) // Create hidden API flag input structure. input := newHiddenAPIFlagInput() // Update the input structure with information obtained from the stub libraries. input.gatherStubLibInfo(ctx, contents) // Populate with flag file paths from the properties. input.extractFlagFilesFromProperties(ctx, &b.properties.HiddenAPIFlagFileProperties) // Populate with package rules from the properties. input.extractPackageRulesFromProperties(&b.sourceOnlyProperties.HiddenAPIPackageProperties) input.gatherPropertyInfo(ctx, contents) // Add the stub dex jars from this module's fragment dependencies. input.DependencyStubDexJarsByScope.addStubDexJarsByModule(dependencyHiddenApiInfo.TransitiveStubDexJarsByScope) return input } // isTestFragment returns true if the current module is a test bootclasspath_fragment. func (b *BootclasspathFragmentModule) isTestFragment() bool { return b.testFragment } // generateHiddenApiFlagRules generates rules to generate hidden API flags and compute the signature // patterns file. func (b *BootclasspathFragmentModule) generateHiddenApiFlagRules(ctx android.ModuleContext, contents []android.Module, input HiddenAPIFlagInput, bootDexInfoByModule bootDexInfoByModule, suffix string) HiddenAPIFlagOutput { // Generate the rules to create the hidden API flags and update the supplied hiddenAPIInfo with the // paths to the created files. flagOutput := hiddenAPIFlagRulesForBootclasspathFragment(ctx, bootDexInfoByModule, contents, input, suffix) // If the module specifies split_packages or package_prefixes then use those to generate the // signature patterns. splitPackages := input.SplitPackages packagePrefixes := input.PackagePrefixes singlePackages := input.SinglePackages if splitPackages != nil || packagePrefixes != nil || singlePackages != nil { flagOutput.SignaturePatternsPath = buildRuleSignaturePatternsFile( ctx, flagOutput.AllFlagsPath, splitPackages, packagePrefixes, singlePackages, suffix) } else if !b.isTestFragment() { ctx.ModuleErrorf(`Must specify at least one of the split_packages, package_prefixes and single_packages properties If this is a new bootclasspath_fragment or you are unsure what to do add the the following to the bootclasspath_fragment: hidden_api: {split_packages: ["*"]}, and then run the following: m analyze_bcpf && analyze_bcpf --bcpf %q it will analyze the bootclasspath_fragment and provide hints as to what you should specify here. If you are happy with its suggestions then you can add the --fix option and it will fix them for you.`, b.BaseModuleName()) } return flagOutput } // produceHiddenAPIOutput produces the hidden API all-flags.csv file (and supporting files) // for the fragment as well as encoding the flags in the boot dex jars. func (b *BootclasspathFragmentModule) produceHiddenAPIOutput(ctx android.ModuleContext, contents []android.Module, fragments []android.Module, input HiddenAPIFlagInput) *HiddenAPIOutput { // Gather information about the boot dex files for the boot libraries provided by this fragment. bootDexInfoByModule := extractBootDexInfoFromModules(ctx, contents) // Generate the flag file needed to encode into the dex files. flagOutput := b.generateHiddenApiFlagRules(ctx, contents, input, bootDexInfoByModule, "") // Encode those flags into the dex files of the contents of this fragment. encodedBootDexFilesByModule := hiddenAPIEncodeRulesForBootclasspathFragment(ctx, bootDexInfoByModule, flagOutput.AllFlagsPath) // Store that information for return for use by other rules. output := &HiddenAPIOutput{ HiddenAPIFlagOutput: flagOutput, EncodedBootDexFilesByModule: encodedBootDexFilesByModule, } // Get the ApiLevel associated with SOONG_SDK_SNAPSHOT_TARGET_BUILD_RELEASE, defaulting to current // if not set. config := ctx.Config() targetApiLevel := android.ApiLevelOrPanic(ctx, config.GetenvWithDefault("SOONG_SDK_SNAPSHOT_TARGET_BUILD_RELEASE", "current")) // Filter the contents list to remove any modules that do not support the target build release. // The current build release supports all the modules. contentsForSdkSnapshot := []android.Module{} for _, module := range contents { // If the module has a min_sdk_version that is higher than the target build release then it will // not work on the target build release and so must not be included in the sdk snapshot. minApiLevel := android.MinApiLevelForSdkSnapshot(ctx, module) if minApiLevel.GreaterThan(targetApiLevel) { continue } contentsForSdkSnapshot = append(contentsForSdkSnapshot, module) } var flagFilesByCategory FlagFilesByCategory if len(contentsForSdkSnapshot) != len(contents) { // The sdk snapshot has different contents to the runtime fragment so it is not possible to // reuse the hidden API information generated for the fragment. So, recompute that information // for the sdk snapshot. filteredInput := b.createHiddenAPIFlagInput(ctx, contentsForSdkSnapshot, fragments) // Gather information about the boot dex files for the boot libraries provided by this fragment. filteredBootDexInfoByModule := extractBootDexInfoFromModules(ctx, contentsForSdkSnapshot) flagOutput = b.generateHiddenApiFlagRules(ctx, contentsForSdkSnapshot, filteredInput, filteredBootDexInfoByModule, "-for-sdk-snapshot") flagFilesByCategory = filteredInput.FlagFilesByCategory } else { // The sdk snapshot has the same contents as the runtime fragment so reuse that information. flagFilesByCategory = input.FlagFilesByCategory } // Make the information available for the sdk snapshot. ctx.SetProvider(HiddenAPIInfoForSdkProvider, HiddenAPIInfoForSdk{ FlagFilesByCategory: flagFilesByCategory, HiddenAPIFlagOutput: flagOutput, }) return output } // produceBootImageFiles builds the boot image files from the source if it is required. func (b *BootclasspathFragmentModule) produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs { // Only generate the boot image if the configuration does not skip it. return b.generateBootImageBuildActions(ctx, imageConfig) } // generateBootImageBuildActions generates ninja rules to create the boot image if required for this // module. // // If it could not create the files then it will return nil. Otherwise, it will return a map from // android.ArchType to the predefined paths of the boot image files. func (b *BootclasspathFragmentModule) generateBootImageBuildActions(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs { global := dexpreopt.GetGlobalConfig(ctx) if !shouldBuildBootImages(ctx.Config(), global) { return bootImageOutputs{} } // Bootclasspath fragment modules that are for the platform do not produce a boot image. apexInfo := ctx.Provider(android.ApexInfoProvider).(android.ApexInfo) if apexInfo.IsForPlatform() { return bootImageOutputs{} } // Build a profile for the image config and then use that to build the boot image. profile := bootImageProfileRule(ctx, imageConfig) // If dexpreopt of boot image jars should be skipped, generate only a profile. if SkipDexpreoptBootJars(ctx) { return bootImageOutputs{ profile: profile, } } // Build boot image files for the host variants. buildBootImageVariantsForBuildOs(ctx, imageConfig, profile) // Build boot image files for the android variants. bootImageFiles := buildBootImageVariantsForAndroidOs(ctx, imageConfig, profile) // Return the boot image files for the android variants for inclusion in an APEX and to be zipped // up for the dist. return bootImageFiles } func (b *BootclasspathFragmentModule) AndroidMkEntries() []android.AndroidMkEntries { // Use the generated classpath proto as the output. outputFile := b.outputFilepath // Create a fake entry that will cause this to be added to the module-info.json file. entriesList := []android.AndroidMkEntries{{ Class: "FAKE", OutputFile: android.OptionalPathForPath(outputFile), Include: "$(BUILD_PHONY_PACKAGE)", ExtraFooters: []android.AndroidMkExtraFootersFunc{ func(w io.Writer, name, prefix, moduleDir string) { // Allow the bootclasspath_fragment to be built by simply passing its name on the command // line. fmt.Fprintln(w, ".PHONY:", b.Name()) fmt.Fprintln(w, b.Name()+":", outputFile.String()) }, }, }} return entriesList } func (b *BootclasspathFragmentModule) getImageName() *string { return b.properties.Image_name } func (b *BootclasspathFragmentModule) getProfilePath() android.Path { return b.profilePath } // Collect information for opening IDE project files in java/jdeps.go. func (b *BootclasspathFragmentModule) IDEInfo(dpInfo *android.IdeInfo) { dpInfo.Deps = append(dpInfo.Deps, b.properties.Contents...) dpInfo.Paths = append(dpInfo.Paths, b.modulePaths...) } type bootclasspathFragmentMemberType struct { android.SdkMemberTypeBase } func (b *bootclasspathFragmentMemberType) AddDependencies(ctx android.SdkDependencyContext, dependencyTag blueprint.DependencyTag, names []string) { ctx.AddVariationDependencies(nil, dependencyTag, names...) } func (b *bootclasspathFragmentMemberType) IsInstance(module android.Module) bool { _, ok := module.(*BootclasspathFragmentModule) return ok } func (b *bootclasspathFragmentMemberType) AddPrebuiltModule(ctx android.SdkMemberContext, member android.SdkMember) android.BpModule { if b.PropertyName == "boot_images" { return ctx.SnapshotBuilder().AddPrebuiltModule(member, "prebuilt_boot_image") } else { return ctx.SnapshotBuilder().AddPrebuiltModule(member, "prebuilt_bootclasspath_fragment") } } func (b *bootclasspathFragmentMemberType) CreateVariantPropertiesStruct() android.SdkMemberProperties { return &bootclasspathFragmentSdkMemberProperties{} } type bootclasspathFragmentSdkMemberProperties struct { android.SdkMemberPropertiesBase // The image name Image_name *string // Contents of the bootclasspath fragment Contents []string // Stub_libs properties. Stub_libs []string Core_platform_stub_libs []string // Fragment properties Fragments []ApexVariantReference // Flag files by *hiddenAPIFlagFileCategory Flag_files_by_category FlagFilesByCategory // The path to the generated annotation-flags.csv file. Annotation_flags_path android.OptionalPath // The path to the generated metadata.csv file. Metadata_path android.OptionalPath // The path to the generated index.csv file. Index_path android.OptionalPath // The path to the generated stub-flags.csv file. Stub_flags_path android.OptionalPath `supported_build_releases:"S"` // The path to the generated all-flags.csv file. All_flags_path android.OptionalPath `supported_build_releases:"S"` // The path to the generated signature-patterns.csv file. Signature_patterns_path android.OptionalPath `supported_build_releases:"Tiramisu+"` // The path to the generated filtered-stub-flags.csv file. Filtered_stub_flags_path android.OptionalPath `supported_build_releases:"Tiramisu+"` // The path to the generated filtered-flags.csv file. Filtered_flags_path android.OptionalPath `supported_build_releases:"Tiramisu+"` } func (b *bootclasspathFragmentSdkMemberProperties) PopulateFromVariant(ctx android.SdkMemberContext, variant android.Module) { module := variant.(*BootclasspathFragmentModule) b.Image_name = module.properties.Image_name b.Contents = module.properties.Contents // Get the hidden API information from the module. mctx := ctx.SdkModuleContext() hiddenAPIInfo := mctx.OtherModuleProvider(module, HiddenAPIInfoForSdkProvider).(HiddenAPIInfoForSdk) b.Flag_files_by_category = hiddenAPIInfo.FlagFilesByCategory // Copy all the generated file paths. b.Annotation_flags_path = android.OptionalPathForPath(hiddenAPIInfo.AnnotationFlagsPath) b.Metadata_path = android.OptionalPathForPath(hiddenAPIInfo.MetadataPath) b.Index_path = android.OptionalPathForPath(hiddenAPIInfo.IndexPath) b.Stub_flags_path = android.OptionalPathForPath(hiddenAPIInfo.StubFlagsPath) b.All_flags_path = android.OptionalPathForPath(hiddenAPIInfo.AllFlagsPath) b.Signature_patterns_path = android.OptionalPathForPath(hiddenAPIInfo.SignaturePatternsPath) b.Filtered_stub_flags_path = android.OptionalPathForPath(hiddenAPIInfo.FilteredStubFlagsPath) b.Filtered_flags_path = android.OptionalPathForPath(hiddenAPIInfo.FilteredFlagsPath) // Copy stub_libs properties. b.Stub_libs = module.properties.Api.Stub_libs b.Core_platform_stub_libs = module.properties.Core_platform_api.Stub_libs // Copy fragment properties. b.Fragments = module.properties.Fragments } func (b *bootclasspathFragmentSdkMemberProperties) AddToPropertySet(ctx android.SdkMemberContext, propertySet android.BpPropertySet) { if b.Image_name != nil { propertySet.AddProperty("image_name", *b.Image_name) } builder := ctx.SnapshotBuilder() requiredMemberDependency := builder.SdkMemberReferencePropertyTag(true) if len(b.Contents) > 0 { propertySet.AddPropertyWithTag("contents", b.Contents, requiredMemberDependency) } if len(b.Stub_libs) > 0 { apiPropertySet := propertySet.AddPropertySet("api") apiPropertySet.AddPropertyWithTag("stub_libs", b.Stub_libs, requiredMemberDependency) } if len(b.Core_platform_stub_libs) > 0 { corePlatformApiPropertySet := propertySet.AddPropertySet("core_platform_api") corePlatformApiPropertySet.AddPropertyWithTag("stub_libs", b.Core_platform_stub_libs, requiredMemberDependency) } if len(b.Fragments) > 0 { propertySet.AddProperty("fragments", b.Fragments) } hiddenAPISet := propertySet.AddPropertySet("hidden_api") hiddenAPIDir := "hiddenapi" // Copy manually curated flag files specified on the bootclasspath_fragment. if b.Flag_files_by_category != nil { for _, category := range HiddenAPIFlagFileCategories { paths := b.Flag_files_by_category[category] if len(paths) > 0 { dests := []string{} for _, p := range paths { dest := filepath.Join(hiddenAPIDir, p.Base()) builder.CopyToSnapshot(p, dest) dests = append(dests, dest) } hiddenAPISet.AddProperty(category.PropertyName, dests) } } } copyOptionalPath := func(path android.OptionalPath, property string) { if path.Valid() { p := path.Path() dest := filepath.Join(hiddenAPIDir, p.Base()) builder.CopyToSnapshot(p, dest) hiddenAPISet.AddProperty(property, dest) } } // Copy all the generated files, if available. copyOptionalPath(b.Annotation_flags_path, "annotation_flags") copyOptionalPath(b.Metadata_path, "metadata") copyOptionalPath(b.Index_path, "index") copyOptionalPath(b.Stub_flags_path, "stub_flags") copyOptionalPath(b.All_flags_path, "all_flags") copyOptionalPath(b.Signature_patterns_path, "signature_patterns") copyOptionalPath(b.Filtered_stub_flags_path, "filtered_stub_flags") copyOptionalPath(b.Filtered_flags_path, "filtered_flags") } var _ android.SdkMemberType = (*bootclasspathFragmentMemberType)(nil) // prebuiltBootclasspathFragmentProperties contains additional prebuilt_bootclasspath_fragment // specific properties. type prebuiltBootclasspathFragmentProperties struct { Hidden_api struct { // The path to the annotation-flags.csv file created by the bootclasspath_fragment. Annotation_flags *string `android:"path"` // The path to the metadata.csv file created by the bootclasspath_fragment. Metadata *string `android:"path"` // The path to the index.csv file created by the bootclasspath_fragment. Index *string `android:"path"` // The path to the signature-patterns.csv file created by the bootclasspath_fragment. Signature_patterns *string `android:"path"` // The path to the stub-flags.csv file created by the bootclasspath_fragment. Stub_flags *string `android:"path"` // The path to the all-flags.csv file created by the bootclasspath_fragment. All_flags *string `android:"path"` // The path to the filtered-stub-flags.csv file created by the bootclasspath_fragment. Filtered_stub_flags *string `android:"path"` // The path to the filtered-flags.csv file created by the bootclasspath_fragment. Filtered_flags *string `android:"path"` } } // A prebuilt version of the bootclasspath_fragment module. // // At the moment this is basically just a bootclasspath_fragment module that can be used as a // prebuilt. Eventually as more functionality is migrated into the bootclasspath_fragment module // type from the various singletons then this will diverge. type PrebuiltBootclasspathFragmentModule struct { BootclasspathFragmentModule prebuilt android.Prebuilt // Additional prebuilt specific properties. prebuiltProperties prebuiltBootclasspathFragmentProperties } func (module *PrebuiltBootclasspathFragmentModule) Prebuilt() *android.Prebuilt { return &module.prebuilt } func (module *PrebuiltBootclasspathFragmentModule) Name() string { return module.prebuilt.Name(module.ModuleBase.Name()) } // produceHiddenAPIOutput returns a path to the prebuilt all-flags.csv or nil if none is specified. func (module *PrebuiltBootclasspathFragmentModule) produceHiddenAPIOutput(ctx android.ModuleContext, contents []android.Module, fragments []android.Module, input HiddenAPIFlagInput) *HiddenAPIOutput { pathForOptionalSrc := func(src *string, defaultPath android.Path) android.Path { if src == nil { return defaultPath } return android.PathForModuleSrc(ctx, *src) } pathForSrc := func(property string, src *string) android.Path { if src == nil { ctx.PropertyErrorf(property, "is required but was not specified") return android.PathForModuleSrc(ctx, "missing", property) } return android.PathForModuleSrc(ctx, *src) } // Retrieve the dex files directly from the content modules. They in turn should retrieve the // encoded dex jars from the prebuilt .apex files. encodedBootDexJarsByModule := extractEncodedDexJarsFromModules(ctx, contents) output := HiddenAPIOutput{ HiddenAPIFlagOutput: HiddenAPIFlagOutput{ AnnotationFlagsPath: pathForSrc("hidden_api.annotation_flags", module.prebuiltProperties.Hidden_api.Annotation_flags), MetadataPath: pathForSrc("hidden_api.metadata", module.prebuiltProperties.Hidden_api.Metadata), IndexPath: pathForSrc("hidden_api.index", module.prebuiltProperties.Hidden_api.Index), SignaturePatternsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Signature_patterns, nil), // TODO: Temporarily handle stub_flags/all_flags properties until prebuilts have been updated. StubFlagsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Stub_flags, nil), AllFlagsPath: pathForOptionalSrc(module.prebuiltProperties.Hidden_api.All_flags, nil), }, EncodedBootDexFilesByModule: encodedBootDexJarsByModule, } // TODO: Temporarily fallback to stub_flags/all_flags properties until prebuilts have been updated. output.FilteredStubFlagsPath = pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Filtered_stub_flags, output.StubFlagsPath) output.FilteredFlagsPath = pathForOptionalSrc(module.prebuiltProperties.Hidden_api.Filtered_flags, output.AllFlagsPath) return &output } // produceBootImageFiles extracts the boot image files from the APEX if available. func (module *PrebuiltBootclasspathFragmentModule) produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs { if !shouldCopyBootFilesToPredefinedLocations(ctx, imageConfig) { return bootImageOutputs{} } di := android.FindDeapexerProviderForModule(ctx) if di == nil { return bootImageOutputs{} // An error has been reported by FindDeapexerProviderForModule. } profile := (android.WritablePath)(nil) if imageConfig.profileInstallPathInApex != "" { profile = di.PrebuiltExportPath(imageConfig.profileInstallPathInApex) } // Build the boot image files for the host variants. These are always built from the dex files // provided by the contents of this module as prebuilt versions of the host boot image files are // not available, i.e. there is no host specific prebuilt apex containing them. This has to be // built without a profile as the prebuilt modules do not provide a profile. buildBootImageVariantsForBuildOs(ctx, imageConfig, profile) if profile == nil && imageConfig.isProfileGuided() { ctx.ModuleErrorf("Unable to produce boot image files: profiles not found in the prebuilt apex") return bootImageOutputs{} } // Build boot image files for the android variants from the dex files provided by the contents // of this module. return buildBootImageVariantsForAndroidOs(ctx, imageConfig, profile) } func (b *PrebuiltBootclasspathFragmentModule) getImageName() *string { return b.properties.Image_name } func (b *PrebuiltBootclasspathFragmentModule) getProfilePath() android.Path { return b.profilePath } var _ commonBootclasspathFragment = (*PrebuiltBootclasspathFragmentModule)(nil) // RequiredFilesFromPrebuiltApex returns the list of all files the prebuilt_bootclasspath_fragment // requires from a prebuilt .apex file. // // If there is no image config associated with this fragment then it returns nil. Otherwise, it // returns the files that are listed in the image config. func (module *PrebuiltBootclasspathFragmentModule) RequiredFilesFromPrebuiltApex(ctx android.BaseModuleContext) []string { imageConfig := module.getImageConfig(ctx) if imageConfig != nil { files := []string{} if imageConfig.profileInstallPathInApex != "" { // Add the boot image profile. files = append(files, imageConfig.profileInstallPathInApex) } return files } return nil } var _ android.RequiredFilesFromPrebuiltApex = (*PrebuiltBootclasspathFragmentModule)(nil) func prebuiltBootclasspathFragmentFactory() android.Module { m := &PrebuiltBootclasspathFragmentModule{} m.AddProperties(&m.properties, &m.prebuiltProperties) // This doesn't actually have any prebuilt files of its own so pass a placeholder for the srcs // array. android.InitPrebuiltModule(m, &[]string{"placeholder"}) android.InitApexModule(m) android.InitAndroidArchModule(m, android.HostAndDeviceSupported, android.MultilibCommon) // Initialize the contents property from the image_name. android.AddLoadHook(m, func(ctx android.LoadHookContext) { bootclasspathFragmentInitContentsFromImage(ctx, &m.BootclasspathFragmentModule) }) return m }