Add dirs and symlinks property to filesystem
Dirs and symlinks will be created under the root of the filesystem.
Basic essential directories like "dev", "proc", "sys" and symlinks like
"bin -> /system/bin", "init -> /system/bin/init" can be created with
these properties.
Bug: 179652970
Test: boot with aosp_cf_x86_64_only_phone, see adb works
Change-Id: Ie06dc5a93635ea8b1e18be517ed8615b6c82fee6
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index 69496c9..3bccde9 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -16,6 +16,8 @@
import (
"fmt"
+ "path/filepath"
+ "strings"
"android/soong/android"
@@ -37,6 +39,11 @@
installDir android.InstallPath
}
+type symlinkDefinition struct {
+ Target *string
+ Name *string
+}
+
type filesystemProperties struct {
// When set to true, sign the image with avbtool. Default is false.
Use_avb *bool
@@ -58,6 +65,12 @@
// Base directory relative to root, to which deps are installed, e.g. "system". Default is "."
// (root).
Base_dir *string
+
+ // Directories to be created under root. e.g. /dev, /proc, etc.
+ Dirs []string
+
+ // Symbolic links to be created under root with "ln -sf <target> <name>".
+ Symlinks []symlinkDefinition
}
// android_filesystem packages a set of modules and their transitive dependencies into a filesystem
@@ -135,7 +148,32 @@
builder.Command().Text("rm -rf").Text(rootDir.String())
builder.Command().Text("mkdir -p").Text(rootDir.String())
- // Currently root.zip is empty, and just a placeholder now. Dirs and symlinks will be added.
+ // create dirs and symlinks
+ for _, dir := range f.properties.Dirs {
+ // OutputPath.Join verifies dir
+ builder.Command().Text("mkdir -p").Text(rootDir.Join(ctx, dir).String())
+ }
+
+ for _, symlink := range f.properties.Symlinks {
+ name := strings.TrimSpace(proptools.String(symlink.Name))
+ target := strings.TrimSpace(proptools.String(symlink.Target))
+
+ if name == "" {
+ ctx.PropertyErrorf("symlinks", "Name can't be empty")
+ continue
+ }
+
+ if target == "" {
+ ctx.PropertyErrorf("symlinks", "Target can't be empty")
+ continue
+ }
+
+ // OutputPath.Join verifies name. don't need to verify target.
+ dst := rootDir.Join(ctx, name)
+
+ builder.Command().Text("mkdir -p").Text(filepath.Dir(dst.String()))
+ builder.Command().Text("ln -sf").Text(proptools.ShellEscape(target)).Text(dst.String())
+ }
zipOut := android.PathForModuleGen(ctx, "root.zip").OutputPath
