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Atmosphere/stratosphere/ams_mitm/source/sysupdater/sysupdater_apply_manager.cpp
2020-06-28 01:46:51 -07:00

102 lines
4.3 KiB
C++

/*
* Copyright (c) 2018-2020 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 <stratosphere.hpp>
#include "sysupdater_apply_manager.hpp"
namespace ams::mitm::sysupdater {
namespace {
alignas(os::MemoryPageSize) u8 g_boot_image_update_buffer[64_KB];
updater::BootImageUpdateType GetBootImageUpdateType() {
int boot_image_update_type;
auto size = settings::fwdbg::GetSettingsItemValue(std::addressof(boot_image_update_type), sizeof(boot_image_update_type), "systeminitializer", "boot_image_update_type");
if (size != sizeof(boot_image_update_type)) {
return updater::BootImageUpdateType::Erista;
}
return updater::GetBootImageUpdateType(boot_image_update_type);
}
Result MarkPreCommitForBootImages() {
/* Set verification required for both normal and safe mode. */
R_TRY(updater::MarkVerifyingRequired(updater::BootModeType::Normal, g_boot_image_update_buffer, sizeof(g_boot_image_update_buffer)));
R_TRY(updater::MarkVerifyingRequired(updater::BootModeType::Safe, g_boot_image_update_buffer, sizeof(g_boot_image_update_buffer)));
/* Pre-commit is now marked. */
return ResultSuccess();
}
Result UpdateBootImages() {
/* Define a helper to update the images. */
auto UpdateBootImageImpl = [](updater::BootModeType boot_mode, updater::BootImageUpdateType boot_image_update_type) -> Result {
/* Get the boot image package id. */
ncm::SystemDataId boot_image_package_id = {};
R_TRY_CATCH(updater::GetBootImagePackageId(std::addressof(boot_image_package_id), boot_mode, g_boot_image_update_buffer, sizeof(g_boot_image_update_buffer))) {
R_CATCH(updater::ResultBootImagePackageNotFound) {
/* Nintendo simply falls through when the package is not found. */
}
} R_END_TRY_CATCH;
/* Update the boot images. */
R_TRY_CATCH(updater::UpdateBootImagesFromPackage(boot_image_package_id, boot_mode, g_boot_image_update_buffer, sizeof(g_boot_image_update_buffer), boot_image_update_type)) {
R_CATCH(updater::ResultBootImagePackageNotFound) {
/* Nintendo simply falls through when the package is not found. */
}
} R_END_TRY_CATCH;
/* Mark the images verified. */
R_TRY(updater::MarkVerified(boot_mode, g_boot_image_update_buffer, sizeof(g_boot_image_update_buffer)));
/* The boot images are updated. */
return ResultSuccess();
};
/* Get the boot image update type. */
auto boot_image_update_type = GetBootImageUpdateType();
/* Update boot images for safe mode. */
R_TRY(UpdateBootImageImpl(updater::BootModeType::Safe, boot_image_update_type));
/* Update boot images for normal mode. */
R_TRY(UpdateBootImageImpl(updater::BootModeType::Normal, boot_image_update_type));
/* Both sets of images are updated. */
return ResultSuccess();
}
}
Result SystemUpdateApplyManager::ApplyPackageTask(ncm::PackageSystemDowngradeTask *task) {
/* Lock the apply mutex. */
std::scoped_lock lk(this->apply_mutex);
/* NOTE: Here, Nintendo creates a system report for the update. */
/* Mark boot images to note that we're updating. */
R_TRY(MarkPreCommitForBootImages());
/* Commit the task. */
R_TRY(task->Commit());
/* Update the boot images. */
R_TRY(UpdateBootImages());
return ResultSuccess();
}
}