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/*
* Copyright (C) 2016 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#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 dark theme flag as part of data wipe.
static bool WipeDarkThemeFlag() {
// Must be consistent with the one in init.hardware.rc (10-byte `theme-dark`). The magic is at
// 10814 in vendor space, or (2048 + 10814) since the start of /misc.
const std::string wipe_str(10, '\x00');
constexpr size_t kDarkThemeFlagOffsetInVendorSpace = 10814;
if (std::string err; !WriteMiscPartitionVendorSpace(
wipe_str.data(), wipe_str.size(), kDarkThemeFlagOffsetInVendorSpace, &err)) {
LOG(ERROR) << "Failed to write wipe string: " << err;
return false;
}
LOG(INFO) << "Dark theme flag wiped successfully";
return true;
}
class Nanohub_Device : public Device {
public:
Nanohub_Device(ScreenRecoveryUI* ui) : Device(ui) {}
bool PostWipeData();
};
bool Nanohub_Device::PostWipeData() {
int fd = open("/sys/class/nanohub/nanohub/erase_shared", O_WRONLY);
if (fd < 0) {
PLOG(ERROR) << "open erase_shared failed";
} else {
if (write(fd, "1\n", 2) != 2) {
PLOG(ERROR) << "write to erase_shared failed";
} else {
LOG(INFO) << "Successfully erased nanoapps";
}
close(fd);
}
WipeDarkThemeFlag();
// open/write failure caused by permissions issues would persist across
// reboots, so always return true to prevent a factory reset failure loop.
return true;
}
Device* make_device() {
return new Nanohub_Device(new ScreenRecoveryUI);
}
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