Convert BootControl HAL to binder.
The new HAL specification uses HIDL to communicate between the caller
and the HAL code itself, which is now what the BootControlAndroid
implementation does. Nevertheless, since update_engine_sideload uses
the boot_control HAL directly as a static library this patch keeps the
old implementation around, now called BootControlRecovery for this
purpose.
Bug: 31863957
Test: Applied an update on master.
Change-Id: Ib2f0c4f0c616e76d19cc78b9b7e44bc55aec8ffa
diff --git a/boot_control_recovery.h b/boot_control_recovery.h
new file mode 100644
index 0000000..3a83caa
--- /dev/null
+++ b/boot_control_recovery.h
@@ -0,0 +1,63 @@
+//
+// Copyright (C) 2015 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.
+//
+
+#ifndef UPDATE_ENGINE_BOOT_CONTROL_RECOVERY_H_
+#define UPDATE_ENGINE_BOOT_CONTROL_RECOVERY_H_
+
+#include <string>
+
+#include <hardware/boot_control.h>
+#include <hardware/hardware.h>
+
+#include "update_engine/common/boot_control.h"
+
+namespace chromeos_update_engine {
+
+// The Android recovery implementation of the BootControlInterface. This
+// implementation uses the legacy libhardware's boot_control HAL to access the
+// bootloader by linking against it statically. This should only be used in
+// recovery.
+class BootControlRecovery : public BootControlInterface {
+ public:
+ BootControlRecovery() = default;
+ ~BootControlRecovery() = default;
+
+ // Load boot_control HAL implementation using libhardware and
+ // initializes it. Returns false if an error occurred.
+ bool Init();
+
+ // BootControlInterface overrides.
+ unsigned int GetNumSlots() const override;
+ BootControlInterface::Slot GetCurrentSlot() const override;
+ bool GetPartitionDevice(const std::string& partition_name,
+ BootControlInterface::Slot slot,
+ std::string* device) const override;
+ bool IsSlotBootable(BootControlInterface::Slot slot) const override;
+ bool MarkSlotUnbootable(BootControlInterface::Slot slot) override;
+ bool SetActiveBootSlot(BootControlInterface::Slot slot) override;
+ bool MarkBootSuccessfulAsync(base::Callback<void(bool)> callback) override;
+
+ private:
+ // NOTE: There is no way to release/unload HAL implementations so
+ // this is essentially leaked on object destruction.
+ boot_control_module_t* module_;
+
+ DISALLOW_COPY_AND_ASSIGN(BootControlRecovery);
+};
+
+} // namespace chromeos_update_engine
+
+#endif // UPDATE_ENGINE_BOOT_CONTROL_RECOVERY_H_