Merge changes Ifa1ed8de,I969bf4a2 (636b7678) · Commits · e / os / android_build_soong

filesystem/filesystem.go

+68 −11

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@ import (
		"android/soong/android"

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

		func init() {
		@@ -30,10 +31,24 @@ type filesystem struct {
		android.ModuleBase
		android.PackagingBase

		properties filesystemProperties

		output android.OutputPath
		installDir android.InstallPath
		}

		type filesystemProperties struct {
		// When set to true, sign the image with avbtool. Default is false.
		Use_avb *bool

		// Path to the private key that avbtool will use to sign this filesystem image.
		// TODO(jiyong): allow apex_key to be specified here
		Avb_private_key *string `android:"path"`

		// Hash and signing algorithm for avbtool. Default is SHA256_RSA4096.
		Avb_algorithm *string
		}

		// android_filesystem packages a set of modules and their transitive dependencies into a filesystem
		// image. The filesystem images are expected to be mounted in the target device, which means the
		// modules in the filesystem image are built for the target device (i.e. Android, not Linux host).
		@@ -41,6 +56,7 @@ type filesystem struct {
		// partitions like system.img. For example, cc_library modules are placed under ./lib[64] directory.
		func filesystemFactory() android.Module {
		module := &filesystem{}
		module.AddProperties(&module.properties)
		android.InitPackageModule(module)
		android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
		return module
		@@ -72,21 +88,12 @@ func (f *filesystem) GenerateAndroidBuildActions(ctx android.ModuleContext) {
		FlagWithArg("-d ", rootDir.String()). // zipsync wipes this. No need to clear.
		Input(zipFile)

		mkuserimg := ctx.Config().HostToolPath(ctx, "mkuserimg_mke2fs")
		propFile := android.PathForModuleOut(ctx, "prop").OutputPath
		// TODO(jiyong): support more filesystem types other than ext4
		propsText := fmt.Sprintf(`mount_point=system\n`+
		`fs_type=ext4\n`+
		`use_dynamic_partition_size=true\n`+
		`ext_mkuserimg=%s\n`, mkuserimg.String())
		builder.Command().Text("echo").Flag("-e").Flag(`"` + propsText + `"`).
		Text(">").Output(propFile).
		Implicit(mkuserimg)

		propFile, toolDeps := f.buildPropFile(ctx)
		f.output = android.PathForModuleOut(ctx, f.installFileName()).OutputPath
		builder.Command().BuiltTool("build_image").
		Text(rootDir.String()). // input directory
		Input(propFile).
		Implicits(toolDeps).
		Output(f.output).
		Text(rootDir.String()) // directory where to find fs_config_files\|dirs

		@@ -97,6 +104,56 @@ func (f *filesystem) GenerateAndroidBuildActions(ctx android.ModuleContext) {
		ctx.InstallFile(f.installDir, f.installFileName(), f.output)
		}

		func (f *filesystem) buildPropFile(ctx android.ModuleContext) (propFile android.OutputPath, toolDeps android.Paths) {
		type prop struct {
		name string
		value string
		}

		var props []prop
		var deps android.Paths
		addStr := func(name string, value string) {
		props = append(props, prop{name, value})
		}
		addPath := func(name string, path android.Path) {
		props = append(props, prop{name, path.String()})
		deps = append(deps, path)
		}

		// TODO(jiyong): support more filesystem types other than ext4
		addStr("fs_type", "ext4")
		addStr("mount_point", "system")
		addStr("use_dynamic_partition_size", "true")
		addPath("ext_mkuserimg", ctx.Config().HostToolPath(ctx, "mkuserimg_mke2fs"))
		// b/177813163 deps of the host tools have to be added. Remove this.
		for _, t := range []string{"mke2fs", "e2fsdroid", "tune2fs"} {
		deps = append(deps, ctx.Config().HostToolPath(ctx, t))
		}

		if proptools.Bool(f.properties.Use_avb) {
		addStr("avb_hashtree_enable", "true")
		addPath("avb_avbtool", ctx.Config().HostToolPath(ctx, "avbtool"))
		algorithm := proptools.StringDefault(f.properties.Avb_algorithm, "SHA256_RSA4096")
		addStr("avb_algorithm", algorithm)
		key := android.PathForModuleSrc(ctx, proptools.String(f.properties.Avb_private_key))
		addPath("avb_key_path", key)
		addStr("avb_add_hashtree_footer_args", "--do_not_generate_fec")
		addStr("partition_name", f.Name())
		}

		propFile = android.PathForModuleOut(ctx, "prop").OutputPath
		builder := android.NewRuleBuilder(pctx, ctx)
		builder.Command().Text("rm").Flag("-rf").Output(propFile)
		for _, p := range props {
		builder.Command().
		Text("echo").Flag("-e").
		Flag(`"` + p.name + "=" + p.value + `"`).
		Text(">>").Output(propFile)
		}
		builder.Build("build_filesystem_prop", fmt.Sprintf("Creating filesystem props for %s", f.BaseModuleName()))
		return propFile, deps
		}

		var _ android.AndroidMkEntriesProvider = (*filesystem)(nil)

		// Implements android.AndroidMkEntriesProvider