1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <string> 18 19 #include <android-base/logging.h> 20 #include <bootloader_message/bootloader_message.h> 21 #include <recovery_ui/device.h> 22 #include <recovery_ui/screen_ui.h> 23 24 // Wipes the provisioned flag as part of data wipe. 25 static bool WipeProvisionedFlag() { 26 // Must be consistent with the one in init.hardware.rc (10-byte `theme-dark`). 27 const std::string wipe_str(10, '\x00'); 28 constexpr size_t kProvisionedFlagOffsetInVendorSpace = 0; 29 if (std::string err; !WriteMiscPartitionVendorSpace( 30 wipe_str.data(), wipe_str.size(), kProvisionedFlagOffsetInVendorSpace, &err)) { 31 LOG(ERROR) << "Failed to write wipe string: " << err; 32 return false; 33 } 34 LOG(INFO) << "Provisioned flag wiped successful"; 35 return true; 36 } 37 38 class TaimenDevice : public Device { 39 public: 40 TaimenDevice(ScreenRecoveryUI* ui) : Device(ui) {} 41 42 // Hook to wipe user data not stored in /data. 43 bool PostWipeData() override { 44 // Try to do everything but report a failure if anything wasn't successful. 45 bool total_success = true; 46 auto ui = GetUI(); 47 ui->Print("Wiping provisioned flag...\n"); 48 if (!WipeProvisionedFlag()) { 49 total_success = false; 50 } 51 return total_success; 52 } 53 }; 54 55 Device* make_device() { 56 return new TaimenDevice(new ScreenRecoveryUI); 57 } 58
