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Commit 65c49f59 authored by Jiyong Park's avatar Jiyong Park
Browse files

android_filesystem is installable 

Also document about the android_filesystem module type.

Bug: 172414391
Test: m
Change-Id: Iae07af9dd22f34c8e0e4c833333bafdf82dcab2a
parent cc1157cd

filesystem/filesystem.go

+33 −2
Original line number Diff line number Diff line
@@ -29,8 +29,16 @@ func init() { 
type filesystem struct {

	android.ModuleBase

	android.PackagingBase



	output     android.OutputPath

	installDir android.InstallPath

}



// 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).

// The modules are placed in the filesystem image just like they are installed to the ordinary

// partitions like system.img. For example, cc_library modules are placed under ./lib[64] directory.

func filesystemFactory() android.Module {

	module := &filesystem{}

	android.InitPackageModule(module)
@@ -44,6 +52,10 @@ func (f *filesystem) DepsMutator(ctx android.BottomUpMutatorContext) { 
	f.AddDeps(ctx, dependencyTag)

}



func (f *filesystem) installFileName() string {

	return f.BaseModuleName() + ".img"

}



var pctx = android.NewPackageContext("android/soong/filesystem")



func (f *filesystem) GenerateAndroidBuildActions(ctx android.ModuleContext) {
@@ -68,13 +80,32 @@ func (f *filesystem) GenerateAndroidBuildActions(ctx android.ModuleContext) { 
		Text(">").Output(propFile).

		Implicit(mkuserimg)



	image := android.PathForModuleOut(ctx, "filesystem.img").OutputPath

	f.output = android.PathForModuleOut(ctx, "filesystem.img").OutputPath

	builder.Command().BuiltTool(ctx, "build_image").

		Text(rootDir.String()). // input directory

		Input(propFile).

		Output(image).

		Output(f.output).

		Text(rootDir.String()) // directory where to find fs_config_files|dirs



	// rootDir is not deleted. Might be useful for quick inspection.

	builder.Build(pctx, ctx, "build_filesystem_image", fmt.Sprintf("Creating filesystem %s", f.BaseModuleName()))



	f.installDir = android.PathForModuleInstall(ctx, "etc")

	ctx.InstallFile(f.installDir, f.installFileName(), f.output)

}



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



// Implements android.AndroidMkEntriesProvider

func (f *filesystem) AndroidMkEntries() []android.AndroidMkEntries {

	return []android.AndroidMkEntries{android.AndroidMkEntries{

		Class:      "ETC",

		OutputFile: android.OptionalPathForPath(f.output),

		ExtraEntries: []android.AndroidMkExtraEntriesFunc{

			func(entries *android.AndroidMkEntries) {

				entries.SetString("LOCAL_MODULE_PATH", f.installDir.ToMakePath().String())

				entries.SetString("LOCAL_INSTALLED_MODULE_STEM", f.installFileName())

			},

		},

	}}

}