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Atmosphere/libraries/libstratosphere/source/nsd/impl/device/nsd_device.cpp
2021-10-10 00:14:06 -07:00

51 lines
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C++

/*
* Copyright (c) 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>
namespace ams::nsd::impl::device {
namespace {
constexpr const char SettingsName[] = "nsd";
constexpr const char SettingsKey[] = "environment_identifier";
constinit os::SdkMutex g_environment_identifier_lock;
constinit EnvironmentIdentifier g_environment_identifier = {};
constinit bool g_determined_environment_identifier = false;
}
const EnvironmentIdentifier &GetEnvironmentIdentifierFromSettings() {
if (AMS_UNLIKELY(!g_determined_environment_identifier)) {
std::scoped_lock lk(g_environment_identifier_lock);
if (AMS_LIKELY(!g_determined_environment_identifier)) {
/* Check size. */
AMS_ABORT_UNLESS(settings::fwdbg::GetSettingsItemValueSize(SettingsName, SettingsKey) != 0);
/* Get value. */
const size_t size = settings::fwdbg::GetSettingsItemValue(g_environment_identifier.value, EnvironmentIdentifier::Size, SettingsName, SettingsKey);
AMS_ABORT_UNLESS(size < EnvironmentIdentifier::Size);
AMS_ABORT_UNLESS(g_environment_identifier == EnvironmentIdentifierOfProductDevice || g_environment_identifier == EnvironmentIdentifierOfNotProductDevice);
g_determined_environment_identifier = true;
}
}
return g_environment_identifier;
}
}