mirror of
https://github.com/Atmosphere-NX/Atmosphere
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87 lines
3.6 KiB
C++
87 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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namespace ams::cfg {
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namespace {
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/* Convenience definitions. */
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constexpr os::ProcessId InitialProcessIdMinDeprecated = {0x00};
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constexpr os::ProcessId InitialProcessIdMaxDeprecated = {0x50};
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/* Privileged process globals. */
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os::Mutex g_lock;
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bool g_got_privileged_process_status = false;
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os::ProcessId g_min_initial_process_id = os::InvalidProcessId, g_max_initial_process_id = os::InvalidProcessId;
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os::ProcessId g_cur_process_id = os::InvalidProcessId;
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/* SD card helpers. */
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void GetPrivilegedProcessIdRange(os::ProcessId *out_min, os::ProcessId *out_max) {
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os::ProcessId min = os::InvalidProcessId, max = os::InvalidProcessId;
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if (hos::GetVersion() >= hos::Version_500) {
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/* On 5.0.0+, we can get precise limits from svcGetSystemInfo. */
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R_ASSERT(svcGetSystemInfo(reinterpret_cast<u64 *>(&min), SystemInfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Minimum));
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R_ASSERT(svcGetSystemInfo(reinterpret_cast<u64 *>(&max), SystemInfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Maximum));
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} else if (hos::GetVersion() >= hos::Version_400) {
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/* On 4.0.0-4.1.0, we can get the precise limits from normal svcGetInfo. */
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R_ASSERT(svcGetInfo(reinterpret_cast<u64 *>(&min), InfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Minimum));
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R_ASSERT(svcGetInfo(reinterpret_cast<u64 *>(&max), InfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Maximum));
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} else {
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/* On < 4.0.0, we just use hardcoded extents. */
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min = InitialProcessIdMinDeprecated;
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max = InitialProcessIdMaxDeprecated;
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}
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*out_min = min;
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*out_max = max;
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}
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void GetPrivilegedProcessStatus() {
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GetPrivilegedProcessIdRange(&g_min_initial_process_id, &g_max_initial_process_id);
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g_cur_process_id = os::GetCurrentProcessId();
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g_got_privileged_process_status = true;
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}
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}
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/* Privileged Process utilities. */
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bool IsInitialProcess() {
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std::scoped_lock lk(g_lock);
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/* If we've not detected, do detection. */
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if (!g_got_privileged_process_status) {
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GetPrivilegedProcessStatus();
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}
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/* Determine if we're privileged, and return. */
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return g_min_initial_process_id <= g_cur_process_id && g_cur_process_id <= g_max_initial_process_id;
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}
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void GetInitialProcessRange(os::ProcessId *out_min, os::ProcessId *out_max) {
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std::scoped_lock lk(g_lock);
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/* If we've not detected, do detection. */
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if (!g_got_privileged_process_status) {
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GetPrivilegedProcessStatus();
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}
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*out_min = g_min_initial_process_id;
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*out_max = g_max_initial_process_id;
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}
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}
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