/* * 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. */ #include <string> #include <android-base/logging.h> #include <bootloader_message/bootloader_message.h> #include <recovery_ui/device.h> #include <recovery_ui/screen_ui.h> // Wipes the provisioned flag as part of data wipe. static bool WipeProvisionedFlag() { // Must be consistent with the one in init.hardware.rc (10-byte `theme-dark`). The magic is at // 0x3048 in vendor space, or (0x800 + 0x3048) since the start of /misc. const std::string wipe_str(10, '\x00'); constexpr size_t kProvisionedFlagOffsetInVendorSpace = 0x3048; if (std::string err; !WriteMiscPartitionVendorSpace( wipe_str.data(), wipe_str.size(), kProvisionedFlagOffsetInVendorSpace, &err)) { LOG(ERROR) << "Failed to write wipe string: " << err; return false; } LOG(INFO) << "Provisioned flag wiped successful"; return true; } class WalleyeDevice : public Device { public: WalleyeDevice(ScreenRecoveryUI* ui) : Device(ui) {} // Hook to wipe user data not stored in /data. bool PostWipeData() override { // Try to do everything but report a failure if anything wasn't successful. bool total_success = true; auto ui = GetUI(); ui->Print("Wiping provisioned flag...\n"); if (!WipeProvisionedFlag()) { total_success = false; } return total_success; } }; Device* make_device() { return new WalleyeDevice(new ScreenRecoveryUI); }