Atmosphere/stratosphere/boot/source/updater/updater_bis_save.cpp

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/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <switch.h>
#include <stratosphere.hpp>
#include "updater_bis_save.hpp"
size_t BisSave::GetVerificationFlagOffset(BootModeType mode) {
switch (mode) {
case BootModeType_Normal:
return 0;
case BootModeType_Safe:
return 1;
default:
return 2;
}
}
Result BisSave::Initialize(void *work_buffer, size_t work_buffer_size) {
if (work_buffer_size < SaveSize || reinterpret_cast<uintptr_t>(work_buffer) & 0xFFF || work_buffer_size & 0x1FF) {
std::abort();
}
Result rc = this->accessor.Initialize();
if (R_FAILED(rc)) {
return rc;
}
this->save_buffer = work_buffer;
return ResultSuccess;
}
void BisSave::Finalize() {
this->accessor.Finalize();
}
Result BisSave::Load() {
size_t read_size;
return this->accessor.Read(&read_size, this->save_buffer, SaveSize, Boot0Partition::BctSave);
}
Result BisSave::Save() {
return this->accessor.Write(this->save_buffer, SaveSize, Boot0Partition::BctSave);
}
bool BisSave::GetNeedsVerification(BootModeType mode) {
return reinterpret_cast<const u8 *>(this->save_buffer)[GetVerificationFlagOffset(mode)] != 0;
}
void BisSave::SetNeedsVerification(BootModeType mode, bool needs_verification) {
reinterpret_cast<u8 *>(this->save_buffer)[GetVerificationFlagOffset(mode)] = needs_verification ? 1 : 0;
}