android_filesystem is installable
Also document about the android_filesystem module type.
Bug: 172414391
Test: m
Change-Id: Iae07af9dd22f34c8e0e4c833333bafdf82dcab2a
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index ecbfbab..ac33b76 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -29,8 +29,16 @@
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 @@
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 @@
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())
+ },
+ },
+ }}
}