compatibility_matrices/build/vintf_compatibility_matrix.go - android_hardware_interfaces - Gitiles

 // Copyright (C) 2018 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 vintf

 import (
 	"fmt"
 	"io"
 	"strings"

 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"

 	"android/soong/android"
 	"android/soong/kernel/configs"
 	"android/soong/selinux"
 )

 type dependencyTag struct {
 	blueprint.BaseDependencyTag
 	name string
 }

 var (
 	pctx = android.NewPackageContext("android/vintf")

 	assembleVintfRule = pctx.AndroidStaticRule("assemble_vintf", blueprint.RuleParams{
 		Command:     `${assembleVintfEnv} ${assembleVintfCmd} -i ${inputs} -o ${out} ${extraArgs}`,
 		CommandDeps: []string{"${assembleVintfCmd}", "${AvbToolCmd}"},
 		Description: "assemble_vintf -i ${inputs}",
 	}, "inputs", "extraArgs", "assembleVintfEnv")

 	xmllintXsd = pctx.AndroidStaticRule("xmllint-xsd", blueprint.RuleParams{
 		Command:     `$XmlLintCmd --quiet --schema $xsd $in > /dev/null && touch -a $out`,
 		CommandDeps: []string{"$XmlLintCmd"},
 		Restat:      true,
 	}, "xsd")

 	kernelConfigTag  = dependencyTag{name: "kernel-config"}
 	schemaTag        = dependencyTag{name: "matrix-schema"}
 	schemaModuleName = "compatibility_matrix_schema"
 )

 const (
 	relpath                  = "vintf"
 	emptyManifest            = "hardware/interfaces/compatibility_matrices/manifest.empty.xml"
 	compatibilityEmptyMatrix = "hardware/interfaces/compatibility_matrices/compatibility_matrix.empty.xml"
 	deviceFcmType            = "device_fcm"
 	productFcmType           = "product_fcm"
 )

 type vintfCompatibilityMatrixProperties struct {
 	// set the name of the output
 	Stem *string

 	// list of source compatibility matrix XML files
 	Srcs []string

 	// list of kernel_config modules to be combined to final output
 	Kernel_configs []string

 	// Type of the FCM type, the allowed type are device_fcm and product_fcm and it should only be used under hardware/interfaces/compatibility_matrices
 	Type *string
 }

 type vintfCompatibilityMatrixRule struct {
 	android.ModuleBase
 	properties vintfCompatibilityMatrixProperties

 	genFile                android.WritablePath
 	additionalDependencies android.WritablePaths
 	phonyOnly              bool
 }

 func init() {
 	pctx.HostBinToolVariable("assembleVintfCmd", "assemble_vintf")
 	pctx.HostBinToolVariable("XmlLintCmd", "xmllint")
 	pctx.HostBinToolVariable("AvbToolCmd", "avbtool")
 	android.RegisterModuleType("vintf_compatibility_matrix", vintfCompatibilityMatrixFactory)
 }

 func vintfCompatibilityMatrixFactory() android.Module {
 	g := &vintfCompatibilityMatrixRule{}
 	g.AddProperties(&g.properties)
 	android.InitAndroidArchModule(g, android.DeviceSupported, android.MultilibCommon)
 	return g
 }

 var _ android.AndroidMkDataProvider = (*vintfCompatibilityMatrixRule)(nil)

 func (g *vintfCompatibilityMatrixRule) DepsMutator(ctx android.BottomUpMutatorContext) {
 	android.ExtractSourcesDeps(ctx, g.properties.Srcs)
 	ctx.AddDependency(ctx.Module(), kernelConfigTag, g.properties.Kernel_configs...)
 	ctx.AddDependency(ctx.Module(), schemaTag, schemaModuleName)
 }

 func (g *vintfCompatibilityMatrixRule) timestampFilePath(ctx android.ModuleContext, path android.Path) android.WritablePath {
 	return android.GenPathWithExt(ctx, "vintf-xmllint", path, "ts")
 }

 func (g *vintfCompatibilityMatrixRule) generateValidateBuildAction(ctx android.ModuleContext, path android.Path, schema android.Path) {
 	timestamp := g.timestampFilePath(ctx, path)
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        xmllintXsd,
 		Description: "xmllint-xsd",
 		Input:       path,
 		Output:      timestamp,
 		Implicit:    schema,
 		Args: map[string]string{
 			"xsd": schema.String(),
 		},
 	})
 	g.additionalDependencies = append(g.additionalDependencies, timestamp)
 }

 func (g *vintfCompatibilityMatrixRule) getSchema(ctx android.ModuleContext) android.OptionalPath {
 	schemaModule := ctx.GetDirectDepWithTag(schemaModuleName, schemaTag)
 	sfp, ok := schemaModule.(android.SourceFileProducer)
 	if !ok {
 		ctx.ModuleErrorf("Implicit dependency %q has no srcs", ctx.OtherModuleName(schemaModule))
 		return android.OptionalPath{}
 	}

 	schemaSrcs := sfp.Srcs()
 	if len(schemaSrcs) != 1 {
 		ctx.PropertyErrorf(`srcs of implicit dependency %q has length %d != 1`, ctx.OtherModuleName(schemaModule), len(schemaSrcs))
 		return android.OptionalPath{}
 	}
 	return android.OptionalPathForPath(schemaSrcs[0])
 }

 func (g *vintfCompatibilityMatrixRule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	// Types attribute only allow `device_fcm` or `product_fcm` if set and only restricted it being used under
 	// `hardware/interfaces/compatibility_matrices` to prevent accidental external usages.
 	matrixType := proptools.String(g.properties.Type)
 	if matrixType != "" {
 		if matrixType != deviceFcmType && matrixType != productFcmType {
 			panic(fmt.Errorf("The attribute 'type' value must be either 'device_fcm' or 'product_fcm' if set!"))
 		}
 		if !strings.HasPrefix(android.PathForModuleSrc(ctx).String(), "hardware/interfaces/compatibility_matrices") {
 			panic(fmt.Errorf("Attribute type can only be set for module under `hardware/interfaces/compatibility_matrices`!"))
 		}
 		if (len(g.properties.Srcs) + len(g.properties.Kernel_configs)) > 0 {
 			panic(fmt.Errorf("Attribute 'type' and 'srcs' or 'kernel_configs' should not set simultaneously! To update inputs for this rule, edit vintf_compatibility_matrix.go directly."))
 		}
 	}

 	outputFilename := proptools.String(g.properties.Stem)
 	if outputFilename == "" {
 		outputFilename = g.Name()
 	}

 	schema := g.getSchema(ctx)
 	if !schema.Valid() {
 		return
 	}

 	inputPaths := android.PathsForModuleSrc(ctx, g.properties.Srcs)
 	for _, srcPath := range inputPaths {
 		g.generateValidateBuildAction(ctx, srcPath, schema.Path())
 	}

 	// No need to validate matrices from kernel configs because they are generated by
 	// assemble_vintf.
 	ctx.VisitDirectDepsWithTag(kernelConfigTag, func(m android.Module) {
 		if k, ok := m.(*configs.KernelConfigRule); ok {
 			inputPaths = append(inputPaths, k.OutputPath())
 		} else {
 			ctx.PropertyErrorf("kernel_configs",
 				"module %q is not a kernel_config", ctx.OtherModuleName(m))
 		}
 	})

 	// For product_compatibility_matrix.xml the source is from the product configuration
 	// DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE.
 	extraArgs := []string{}
 	if matrixType == productFcmType {
 		productMatrixs := android.PathsForSource(ctx, ctx.Config().DeviceProductCompatibilityMatrixFile())
 		if len(productMatrixs) > 0 {
 			inputPaths = append(inputPaths, productMatrixs...)
 			extraArgs = append(extraArgs, "-c", android.PathForSource(ctx, emptyManifest).String())
 		} else {
 			// For product_fcm, if DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE not set, treat it as a phony target without any output generated.
 			g.phonyOnly = true
 			return
 		}
 	}

 	// For framework_compatibility_matrix.device.xml the source may come from the product configuration
 	// DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE or use compatibilityEmptyMatrix if not set. We can't
 	// use a phony target because we still need to install framework_compatibility_matrix.device.xml to
 	// include sepolicy versions.
 	frameworkRuleImplicits := []android.Path{}

 	if matrixType == deviceFcmType {
 		frameworkMatrixs := android.PathsForSource(ctx, ctx.Config().DeviceFrameworkCompatibilityMatrixFile())
 		if len(frameworkMatrixs) > 0 {
 			inputPaths = append(inputPaths, frameworkMatrixs...)

 			// Generate BuildAction for generating the check manifest.
 			emptyManifestPath := android.PathForSource(ctx, emptyManifest)
 			genCheckManifest := android.PathForModuleGen(ctx, "manifest.check.xml")
 			checkManifestInputs := []android.Path{emptyManifestPath}
 			genCheckManifestEnvs := []string{
 				"BOARD_SEPOLICY_VERS=" + ctx.DeviceConfig().BoardSepolicyVers(),
 				"VINTF_IGNORE_TARGET_FCM_VERSION=true",
 			}

 			ctx.Build(pctx, android.BuildParams{
 				Rule:        assembleVintfRule,
 				Description: "Framework Check Manifest",
 				Implicits:   checkManifestInputs,
 				Output:      genCheckManifest,
 				Args: map[string]string{
 					"inputs":           android.PathForSource(ctx, emptyManifest).String(),
 					"extraArgs":        "",
 					"assembleVintfEnv": strings.Join(genCheckManifestEnvs, " "),
 				},
 			})

 			frameworkRuleImplicits = append(frameworkRuleImplicits, genCheckManifest)
 			extraArgs = append(extraArgs, "-c", genCheckManifest.String())
 		} else {
 			inputPaths = append(inputPaths, android.PathForSource(ctx, compatibilityEmptyMatrix))
 		}
 	}

 	g.genFile = android.PathForModuleGen(ctx, outputFilename)
 	frameworkRuleImplicits = append(frameworkRuleImplicits, inputPaths...)

 	ctx.Build(pctx, android.BuildParams{
 		Rule:        assembleVintfRule,
 		Description: "Framework Compatibility Matrix",
 		Implicits:   frameworkRuleImplicits,
 		Output:      g.genFile,
 		Args: map[string]string{
 			"inputs":           strings.Join(inputPaths.Strings(), ":"),
 			"extraArgs":        strings.Join(extraArgs, " "),
 			"assembleVintfEnv": g.getAssembleVintfEnv(ctx),
 		},
 	})
 	g.generateValidateBuildAction(ctx, g.genFile, schema.Path())

 	ctx.InstallFile(android.PathForModuleInstall(ctx, "etc", relpath), outputFilename, g.genFile)
 }

 func (g *vintfCompatibilityMatrixRule) getAssembleVintfEnv(ctx android.ModuleContext) string {
 	if proptools.String(g.properties.Type) == deviceFcmType {
 		assembleVintfEnvs := []string{
 			// POLICYVERS defined in system/sepolicy/build/soong/policy.go
 			fmt.Sprintf("POLICYVERS=%d", selinux.PolicyVers),
 			fmt.Sprintf("PLATFORM_SEPOLICY_VERSION=%s", ctx.DeviceConfig().PlatformSepolicyVersion()),
 			fmt.Sprintf("PLATFORM_SEPOLICY_COMPAT_VERSIONS=\"%s\"", strings.Join(ctx.DeviceConfig().PlatformSepolicyCompatVersions(), " ")),
 		}

 		if ctx.Config().BoardAvbEnable() {
 			assembleVintfEnvs = append(assembleVintfEnvs, fmt.Sprintf("FRAMEWORK_VBMETA_VERSION=\"$$(${AvbToolCmd} add_hashtree_footer --print_required_libavb_version %s)\"", strings.Join(ctx.Config().BoardAvbSystemAddHashtreeFooterArgs(), " ")))
 		} else {
 			assembleVintfEnvs = append(assembleVintfEnvs, "FRAMEWORK_VBMETA_VERSION=\"0.0\"")
 		}

 		return strings.Join(assembleVintfEnvs, " ")
 	}

 	return ""
 }

 func (g *vintfCompatibilityMatrixRule) AndroidMk() android.AndroidMkData {
 	if g.phonyOnly {
 		return android.AndroidMkData{
 			Custom: func(w io.Writer, name, prefix, moduleDir string, data android.AndroidMkData) {
 				fmt.Fprintln(w, "\ninclude $(CLEAR_VARS)", " # vintf.vintf_compatibility_matrix")
 				fmt.Fprintln(w, "LOCAL_PATH :=", moduleDir)
 				fmt.Fprintln(w, "LOCAL_MODULE :=", name)
 				fmt.Fprintln(w, "include $(BUILD_PHONY_PACKAGE)")
 			},
 		}
 	}

 	return android.AndroidMkData{
 		Class:      "ETC",
 		OutputFile: android.OptionalPathForPath(g.genFile),
 		Extra: []android.AndroidMkExtraFunc{
 			func(w io.Writer, outputFile android.Path) {
 				fmt.Fprintln(w, "LOCAL_MODULE_RELATIVE_PATH :=", relpath)
 				if proptools.String(g.properties.Stem) != "" {
 					fmt.Fprintln(w, "LOCAL_MODULE_STEM :=", proptools.String(g.properties.Stem))
 				}
 				for _, path := range g.additionalDependencies {
 					fmt.Fprintln(w, "LOCAL_ADDITIONAL_DEPENDENCIES +=", path.String())
 				}
 			},
 		},
 	}
 }
	// Copyright (C) 2018 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 vintf

	import (
	"fmt"
	"io"
	"strings"

	"github.com/google/blueprint"
	"github.com/google/blueprint/proptools"

	"android/soong/android"
	"android/soong/kernel/configs"
	"android/soong/selinux"
	)

	type dependencyTag struct {
	blueprint.BaseDependencyTag
	name string
	}

	var (
	pctx = android.NewPackageContext("android/vintf")

	assembleVintfRule = pctx.AndroidStaticRule("assemble_vintf", blueprint.RuleParams{
	Command: `${assembleVintfEnv} ${assembleVintfCmd} -i ${inputs} -o ${out} ${extraArgs}`,
	CommandDeps: []string{"${assembleVintfCmd}", "${AvbToolCmd}"},
	Description: "assemble_vintf -i ${inputs}",
	}, "inputs", "extraArgs", "assembleVintfEnv")

	xmllintXsd = pctx.AndroidStaticRule("xmllint-xsd", blueprint.RuleParams{
	Command: `$XmlLintCmd --quiet --schema $xsd $in > /dev/null && touch -a $out`,
	CommandDeps: []string{"$XmlLintCmd"},
	Restat: true,
	}, "xsd")

	kernelConfigTag = dependencyTag{name: "kernel-config"}
	schemaTag = dependencyTag{name: "matrix-schema"}
	schemaModuleName = "compatibility_matrix_schema"
	)

	const (
	relpath = "vintf"
	emptyManifest = "hardware/interfaces/compatibility_matrices/manifest.empty.xml"
	compatibilityEmptyMatrix = "hardware/interfaces/compatibility_matrices/compatibility_matrix.empty.xml"
	deviceFcmType = "device_fcm"
	productFcmType = "product_fcm"
	)

	type vintfCompatibilityMatrixProperties struct {
	// set the name of the output
	Stem *string

	// list of source compatibility matrix XML files
	Srcs []string

	// list of kernel_config modules to be combined to final output
	Kernel_configs []string

	// Type of the FCM type, the allowed type are device_fcm and product_fcm and it should only be used under hardware/interfaces/compatibility_matrices
	Type *string
	}

	type vintfCompatibilityMatrixRule struct {
	android.ModuleBase
	properties vintfCompatibilityMatrixProperties

	genFile android.WritablePath
	additionalDependencies android.WritablePaths
	phonyOnly bool
	}

	func init() {
	pctx.HostBinToolVariable("assembleVintfCmd", "assemble_vintf")
	pctx.HostBinToolVariable("XmlLintCmd", "xmllint")
	pctx.HostBinToolVariable("AvbToolCmd", "avbtool")
	android.RegisterModuleType("vintf_compatibility_matrix", vintfCompatibilityMatrixFactory)
	}

	func vintfCompatibilityMatrixFactory() android.Module {
	g := &vintfCompatibilityMatrixRule{}
	g.AddProperties(&g.properties)
	android.InitAndroidArchModule(g, android.DeviceSupported, android.MultilibCommon)
	return g
	}

	var _ android.AndroidMkDataProvider = (*vintfCompatibilityMatrixRule)(nil)

	func (g *vintfCompatibilityMatrixRule) DepsMutator(ctx android.BottomUpMutatorContext) {
	android.ExtractSourcesDeps(ctx, g.properties.Srcs)
	ctx.AddDependency(ctx.Module(), kernelConfigTag, g.properties.Kernel_configs...)
	ctx.AddDependency(ctx.Module(), schemaTag, schemaModuleName)
	}

	func (g *vintfCompatibilityMatrixRule) timestampFilePath(ctx android.ModuleContext, path android.Path) android.WritablePath {
	return android.GenPathWithExt(ctx, "vintf-xmllint", path, "ts")
	}

	func (g *vintfCompatibilityMatrixRule) generateValidateBuildAction(ctx android.ModuleContext, path android.Path, schema android.Path) {
	timestamp := g.timestampFilePath(ctx, path)
	ctx.Build(pctx, android.BuildParams{
	Rule: xmllintXsd,
	Description: "xmllint-xsd",
	Input: path,
	Output: timestamp,
	Implicit: schema,
	Args: map[string]string{
	"xsd": schema.String(),
	},
	})
	g.additionalDependencies = append(g.additionalDependencies, timestamp)
	}

	func (g *vintfCompatibilityMatrixRule) getSchema(ctx android.ModuleContext) android.OptionalPath {
	schemaModule := ctx.GetDirectDepWithTag(schemaModuleName, schemaTag)
	sfp, ok := schemaModule.(android.SourceFileProducer)
	if !ok {
	ctx.ModuleErrorf("Implicit dependency %q has no srcs", ctx.OtherModuleName(schemaModule))
	return android.OptionalPath{}
	}

	schemaSrcs := sfp.Srcs()
	if len(schemaSrcs) != 1 {
	ctx.PropertyErrorf(`srcs of implicit dependency %q has length %d != 1`, ctx.OtherModuleName(schemaModule), len(schemaSrcs))
	return android.OptionalPath{}
	}
	return android.OptionalPathForPath(schemaSrcs[0])
	}

	func (g *vintfCompatibilityMatrixRule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
	// Types attribute only allow `device_fcm` or `product_fcm` if set and only restricted it being used under
	// `hardware/interfaces/compatibility_matrices` to prevent accidental external usages.
	matrixType := proptools.String(g.properties.Type)
	if matrixType != "" {
	if matrixType != deviceFcmType && matrixType != productFcmType {
	panic(fmt.Errorf("The attribute 'type' value must be either 'device_fcm' or 'product_fcm' if set!"))
	}
	if !strings.HasPrefix(android.PathForModuleSrc(ctx).String(), "hardware/interfaces/compatibility_matrices") {
	panic(fmt.Errorf("Attribute type can only be set for module under `hardware/interfaces/compatibility_matrices`!"))
	}
	if (len(g.properties.Srcs) + len(g.properties.Kernel_configs)) > 0 {
	panic(fmt.Errorf("Attribute 'type' and 'srcs' or 'kernel_configs' should not set simultaneously! To update inputs for this rule, edit vintf_compatibility_matrix.go directly."))
	}
	}

	outputFilename := proptools.String(g.properties.Stem)
	if outputFilename == "" {
	outputFilename = g.Name()
	}

	schema := g.getSchema(ctx)
	if !schema.Valid() {
	return
	}

	inputPaths := android.PathsForModuleSrc(ctx, g.properties.Srcs)
	for _, srcPath := range inputPaths {
	g.generateValidateBuildAction(ctx, srcPath, schema.Path())
	}

	// No need to validate matrices from kernel configs because they are generated by
	// assemble_vintf.
	ctx.VisitDirectDepsWithTag(kernelConfigTag, func(m android.Module) {
	if k, ok := m.(*configs.KernelConfigRule); ok {
	inputPaths = append(inputPaths, k.OutputPath())
	} else {
	ctx.PropertyErrorf("kernel_configs",
	"module %q is not a kernel_config", ctx.OtherModuleName(m))
	}
	})

	// For product_compatibility_matrix.xml the source is from the product configuration
	// DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE.
	extraArgs := []string{}
	if matrixType == productFcmType {
	productMatrixs := android.PathsForSource(ctx, ctx.Config().DeviceProductCompatibilityMatrixFile())
	if len(productMatrixs) > 0 {
	inputPaths = append(inputPaths, productMatrixs...)
	extraArgs = append(extraArgs, "-c", android.PathForSource(ctx, emptyManifest).String())
	} else {
	// For product_fcm, if DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE not set, treat it as a phony target without any output generated.
	g.phonyOnly = true
	return
	}
	}

	// For framework_compatibility_matrix.device.xml the source may come from the product configuration
	// DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE or use compatibilityEmptyMatrix if not set. We can't
	// use a phony target because we still need to install framework_compatibility_matrix.device.xml to
	// include sepolicy versions.
	frameworkRuleImplicits := []android.Path{}

	if matrixType == deviceFcmType {
	frameworkMatrixs := android.PathsForSource(ctx, ctx.Config().DeviceFrameworkCompatibilityMatrixFile())
	if len(frameworkMatrixs) > 0 {
	inputPaths = append(inputPaths, frameworkMatrixs...)

	// Generate BuildAction for generating the check manifest.
	emptyManifestPath := android.PathForSource(ctx, emptyManifest)
	genCheckManifest := android.PathForModuleGen(ctx, "manifest.check.xml")
	checkManifestInputs := []android.Path{emptyManifestPath}
	genCheckManifestEnvs := []string{
	"BOARD_SEPOLICY_VERS=" + ctx.DeviceConfig().BoardSepolicyVers(),
	"VINTF_IGNORE_TARGET_FCM_VERSION=true",
	}

	ctx.Build(pctx, android.BuildParams{
	Rule: assembleVintfRule,
	Description: "Framework Check Manifest",
	Implicits: checkManifestInputs,
	Output: genCheckManifest,
	Args: map[string]string{
	"inputs": android.PathForSource(ctx, emptyManifest).String(),
	"extraArgs": "",
	"assembleVintfEnv": strings.Join(genCheckManifestEnvs, " "),
	},
	})

	frameworkRuleImplicits = append(frameworkRuleImplicits, genCheckManifest)
	extraArgs = append(extraArgs, "-c", genCheckManifest.String())
	} else {
	inputPaths = append(inputPaths, android.PathForSource(ctx, compatibilityEmptyMatrix))
	}
	}

	g.genFile = android.PathForModuleGen(ctx, outputFilename)
	frameworkRuleImplicits = append(frameworkRuleImplicits, inputPaths...)

	ctx.Build(pctx, android.BuildParams{
	Rule: assembleVintfRule,
	Description: "Framework Compatibility Matrix",
	Implicits: frameworkRuleImplicits,
	Output: g.genFile,
	Args: map[string]string{
	"inputs": strings.Join(inputPaths.Strings(), ":"),
	"extraArgs": strings.Join(extraArgs, " "),
	"assembleVintfEnv": g.getAssembleVintfEnv(ctx),
	},
	})
	g.generateValidateBuildAction(ctx, g.genFile, schema.Path())

	ctx.InstallFile(android.PathForModuleInstall(ctx, "etc", relpath), outputFilename, g.genFile)
	}

	func (g *vintfCompatibilityMatrixRule) getAssembleVintfEnv(ctx android.ModuleContext) string {
	if proptools.String(g.properties.Type) == deviceFcmType {
	assembleVintfEnvs := []string{
	// POLICYVERS defined in system/sepolicy/build/soong/policy.go
	fmt.Sprintf("POLICYVERS=%d", selinux.PolicyVers),
	fmt.Sprintf("PLATFORM_SEPOLICY_VERSION=%s", ctx.DeviceConfig().PlatformSepolicyVersion()),
	fmt.Sprintf("PLATFORM_SEPOLICY_COMPAT_VERSIONS=\"%s\"", strings.Join(ctx.DeviceConfig().PlatformSepolicyCompatVersions(), " ")),
	}

	if ctx.Config().BoardAvbEnable() {
	assembleVintfEnvs = append(assembleVintfEnvs, fmt.Sprintf("FRAMEWORK_VBMETA_VERSION=\"$$(${AvbToolCmd} add_hashtree_footer --print_required_libavb_version %s)\"", strings.Join(ctx.Config().BoardAvbSystemAddHashtreeFooterArgs(), " ")))
	} else {
	assembleVintfEnvs = append(assembleVintfEnvs, "FRAMEWORK_VBMETA_VERSION=\"0.0\"")
	}

	return strings.Join(assembleVintfEnvs, " ")
	}

	return ""
	}

	func (g *vintfCompatibilityMatrixRule) AndroidMk() android.AndroidMkData {
	if g.phonyOnly {
	return android.AndroidMkData{
	Custom: func(w io.Writer, name, prefix, moduleDir string, data android.AndroidMkData) {
	fmt.Fprintln(w, "\ninclude $(CLEAR_VARS)", " # vintf.vintf_compatibility_matrix")
	fmt.Fprintln(w, "LOCAL_PATH :=", moduleDir)
	fmt.Fprintln(w, "LOCAL_MODULE :=", name)
	fmt.Fprintln(w, "include $(BUILD_PHONY_PACKAGE)")
	},
	}
	}

	return android.AndroidMkData{
	Class: "ETC",
	OutputFile: android.OptionalPathForPath(g.genFile),
	Extra: []android.AndroidMkExtraFunc{
	func(w io.Writer, outputFile android.Path) {
	fmt.Fprintln(w, "LOCAL_MODULE_RELATIVE_PATH :=", relpath)
	if proptools.String(g.properties.Stem) != "" {
	fmt.Fprintln(w, "LOCAL_MODULE_STEM :=", proptools.String(g.properties.Stem))
	}
	for _, path := range g.additionalDependencies {
	fmt.Fprintln(w, "LOCAL_ADDITIONAL_DEPENDENCIES +=", path.String())
	}
	},
	},
	}
	}