fastbootd: Implement the getvar command.
This implements basic "fastboot getvar" support, including commands supported
by IBootControl.
Bug: 78793464
Test: fastboot getvar <fastboot variable>
Change-Id: Iee1a7b3f43dea46f80dcdf73c45034e2ffe4727d
diff --git a/fastboot/device/variables.h b/fastboot/device/variables.h
new file mode 100644
index 0000000..09ef8ec
--- /dev/null
+++ b/fastboot/device/variables.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2018 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 <functional>
+#include <string>
+#include <vector>
+
+class FastbootDevice;
+
+std::string GetVersion(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetBootloaderVersion(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetBasebandVersion(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetProduct(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetSerial(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetSecure(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetCurrentSlot(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetSlotCount(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetSlotSuccessful(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetSlotUnbootable(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetMaxDownloadSize(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetUnlocked(FastbootDevice* device, const std::vector<std::string>& args);
+std::string GetHasSlot(FastbootDevice* device, const std::vector<std::string>& args);