1 files changed, 58 insertions, 0 deletions

diff --git a/boot_control/include/libboot_control/libboot_control.h b/boot_control/include/libboot_control/libboot_control.h
new file mode 100644
index 000000000..6582d0244
--- /dev/null
+++ b/boot_control/include/libboot_control/libboot_control.h
@@ -0,0 +1,58 @@
+//
+// Copyright (C) 2019 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.
+//
+
+#pragma once
+
+#include <string>
+
+namespace android {
+namespace bootable {
+
+// Helper library to implement the IBootControl HAL using the misc partition.
+class BootControl {
+ public:
+  bool Init();
+  unsigned int GetNumberSlots();
+  unsigned int GetCurrentSlot();
+  bool MarkBootSuccessful();
+  bool SetActiveBootSlot(unsigned int slot);
+  bool SetSlotAsUnbootable(unsigned int slot);
+  bool SetSlotBootable(unsigned int slot);
+  bool IsSlotBootable(unsigned int slot);
+  const char* GetSuffix(unsigned int slot);
+  bool IsSlotMarkedSuccessful(unsigned int slot);
+
+  const std::string& misc_device() const {
+    return misc_device_;
+  }
+
+ private:
+  // Whether this object was initialized with data from the bootloader message
+  // that doesn't change until next reboot.
+  bool initialized_ = false;
+
+  // The path to the misc_device as reported in the fstab.
+  std::string misc_device_;
+
+  // The number of slots present on the device.
+  unsigned int num_slots_ = 0;
+
+  // The slot where we are running from.
+  unsigned int current_slot_ = 0;
+};
+
+}  // namespace bootable
+}  // namespace android