Copy selinux_fc file to target_files.zip

This CL introduces a new field in FilesystemInfo with the selinux_fc
path of the filesystem(s). android_device will copy this file to the
META subdirectory of target_files.zip

Test: Built soong target_files.zip
Bug: 388633394
Change-Id: Ia81bd2c2d90d6beb116d57adf53deb5736579c3a

2 files changed, 14 insertions, 5 deletions

diff --git a/filesystem/android_device.go b/filesystem/android_device.go
index 514fd2816..eb967ad06 100644
--- a/filesystem/android_device.go
+++ b/filesystem/android_device.go
@@ -454,6 +454,10 @@ func (a *androidDevice) copyMetadataToTargetZip(ctx android.ModuleContext, build
 		abOtaKeysSorted := android.SortedUniqueStrings(a.deviceProps.Ab_ota_keys)
 		abOtaKeysSortedString := proptools.ShellEscape(strings.Join(abOtaKeysSorted, "\\n"))
 		builder.Command().Textf("echo -e").Flag(abOtaKeysSortedString).Textf(" > %s/META/otakeys.txt", targetFilesDir.String())
+		// selinuxfc
+		if a.getFsInfos(ctx)["system"].SelinuxFc != nil {
+			builder.Command().Textf("cp").Input(a.getFsInfos(ctx)["system"].SelinuxFc).Textf(" %s/META/file_contexts.bin", targetFilesDir.String())
+		}
 	}
 }
 
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index c3c06bd58..0381951ca 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -90,6 +90,8 @@ type filesystem struct {
 	entries []string
 
 	filesystemBuilder filesystemBuilder
+
+	selinuxFc android.Path
 }
 
 type filesystemBuilder interface {
@@ -417,6 +419,8 @@ type FilesystemInfo struct {
 	// Path to compress hints file for erofs filesystems
 	// This will be nil for other fileystems like ext4
 	ErofsCompressHints android.Path
+
+	SelinuxFc android.Path
 }
 
 // FullInstallPathInfo contains information about the "full install" paths of all the files
@@ -660,6 +664,7 @@ func (f *filesystem) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 			Json: installedFileJson,
 		},
 		ErofsCompressHints: erofsCompressHints,
+		SelinuxFc:          f.selinuxFc,
 	}
 
 	android.SetProvider(ctx, FilesystemProvider, fsInfo)
@@ -1006,12 +1011,12 @@ func (f *filesystem) buildPropFile(ctx android.ModuleContext) (android.Path, and
 	if f.properties.File_contexts != nil && f.properties.Precompiled_file_contexts != nil {
 		ctx.ModuleErrorf("file_contexts and precompiled_file_contexts cannot both be set")
 	} else if f.properties.File_contexts != nil {
-		addPath("selinux_fc", f.buildFileContexts(ctx))
+		f.selinuxFc = f.buildFileContexts(ctx)
 	} else if f.properties.Precompiled_file_contexts != nil {
-		src := android.PathForModuleSrc(ctx, *f.properties.Precompiled_file_contexts)
-		if src != nil {
-			addPath("selinux_fc", src)
-		}
+		f.selinuxFc = android.PathForModuleSrc(ctx, *f.properties.Precompiled_file_contexts)
+	}
+	if f.selinuxFc != nil {
+		addPath("selinux_fc", f.selinuxFc)
 	}
 	if timestamp := proptools.String(f.properties.Fake_timestamp); timestamp != "" {
 		addStr("timestamp", timestamp)