recovery: Implement a volume manager
This is a copy of the pre-binderized vold which has been converted to
use direct calls instead of sockets and stripped down to only what is
needed to support recovery.
Change-Id: Ic82d929e052b5ba70ecf7b475e0a223d77d9687e
diff --git a/volume_manager/fs/Ext4.h b/volume_manager/fs/Ext4.h
new file mode 100644
index 0000000..d049b45
--- /dev/null
+++ b/volume_manager/fs/Ext4.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ * Copyright (C) 2019 The LineageOS 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.
+ */
+
+#ifndef VOLMGR_EXT4_H
+#define VOLMGR_EXT4_H
+
+#include <utils/Errors.h>
+
+#include <string>
+
+namespace android {
+namespace volmgr {
+namespace ext4 {
+
+bool IsSupported();
+
+status_t Check(const std::string& source, const std::string& target, bool trusted);
+status_t Mount(const std::string& source, const std::string& target, bool ro, bool remount,
+ bool executable, const std::string& opts = "", bool trusted = false,
+ bool portable = false);
+
+} // namespace ext4
+} // namespace volmgr
+} // namespace android
+
+#endif