1 files changed, 55 insertions, 0 deletions
diff --git a/tools/art_boot.cc b/tools/art_boot.cc
new file mode 100644
index 0000000000..f725fc828e
--- /dev/null
+++ b/tools/art_boot.cc
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// This binary is run on boot as a oneshot service. It should not be run at any
+// other point.
+
+#include <string>
+
+#include "android-base/logging.h"
+#include "android-base/properties.h"
+
+// Copies the value of one system property to another if it isn't empty and
+// passes the predicate test_fn.
+static void CopyPropertyIf(const char* src, const char* dst, bool (*test_fn)(const std::string&)) {
+  std::string prop = android::base::GetProperty(src, "");
+  if (prop.empty()) {
+    LOG(INFO) << "Property " << src << " not set";
+  } else if (!test_fn(prop)) {
+    LOG(INFO) << "Property " << src << " has ignored value " << prop;
+  } else {
+    if (android::base::SetProperty(dst, prop)) {
+      LOG(INFO) << "Set property " << dst << " to " << prop << " from " << src;
+    } else {
+      LOG(ERROR) << "Failed to set property " << dst << " to " << prop;
+    }
+  }
+}
+
+int main(int, char** argv) {
+  android::base::InitLogging(argv);
+
+  // Copy properties that must only be set at boot and not change value later.
+  // Note that P/H can change the properties in the experiment namespaces at any
+  // time.
+  CopyPropertyIf("persist.device_config.runtime_native_boot.useartservice",
+                 "dalvik.vm.useartservice",
+                 // If an OEM has set dalvik.vm.useartservice to false we
+                 // shouldn't override it to true from the P/H property.
+                 [](const std::string& prop) { return prop == "false"; });
+
+  return 0;
+}