/*
* 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);
}