Generate $partition_filesystem_config.txt for target_files.zip

These files will be packaged into META subdir of target_files.zip

Some details
- This CL adds the filesystem_config.txt files for system, vendor, ...
  Some other partitions like system_other are currently missing
  (different module type)
- There is a subtle difference between the make and soong build rule. In
  the make rule, it uses $TARGET_OUT (all partitions) as the -D in `fs_config`. In the
  soong rule, this implementation passes the staging directory of the
  filesystem. This difference does not seem to have a difference on the
  final result.
- Some filesystem_config are currently missing/not bit-identical. These
  include boot, init_boot. For these, we actually want to use the
  configs from their ramdisk filesystems. I will do this in a followup
  CL

Test: diff'd target_files.zip
The following files are identical except NOTICE.xml.gz entry
- odm_dlkm, odm, product, system_dlkm, system_ext, vendor_dlkm, vendor

The following files are _not_ identical in names and/or contents
- boot_filesystem_config.txt
- root_filesystem_config.txt
- system_other_filesystem_config.txt
- vendor_boot_filesystem_config.txt

Bug: 388633394
Change-Id: I3a3997c0ffd8100c44b4a50a63bf0709a61d4472

1 files changed, 23 insertions, 0 deletions

diff --git a/filesystem/android_device.go b/filesystem/android_device.go
index 62c86580a..38bfe6bc6 100644
--- a/filesystem/android_device.go
+++ b/filesystem/android_device.go
@@ -463,6 +463,29 @@ func (a *androidDevice) copyMetadataToTargetZip(ctx android.ModuleContext, build
 			builder.Command().Textf("cp").Input(a.getFsInfos(ctx)["system"].SelinuxFc).Textf(" %s/META/file_contexts.bin", targetFilesDir.String())
 		}
 	}
+	// Copy $partition_filesystem_config.txt
+	fsInfos := a.getFsInfos(ctx)
+	for _, partition := range android.SortedKeys(fsInfos) {
+		if fsInfos[partition].FilesystemConfig == nil {
+			continue
+		}
+		if android.InList(partition, []string{"userdata"}) {
+			continue
+		}
+		builder.Command().Textf("cp").Input(fsInfos[partition].FilesystemConfig).Textf(" %s/META/%s", targetFilesDir.String(), a.filesystemConfigNameForTargetFiles(partition))
+	}
+}
+
+// Filenames for the partition specific fs_config files.
+// Hardcode the ramdisk files to their boot image prefix
+func (a *androidDevice) filesystemConfigNameForTargetFiles(partition string) string {
+	name := partition + "_filesystem_config.txt"
+	if partition == "system" {
+		name = "filesystem_config.txt"
+	} else if partition == "ramdisk" {
+		name = "init_boot_filesystem_config.txt"
+	}
+	return name
 }
 
 func (a *androidDevice) getFilesystemInfo(ctx android.ModuleContext, depName string) FilesystemInfo {