mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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95 lines
3.6 KiB
C++
95 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 <switch.h>
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#include <stratosphere.hpp>
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#include <stratosphere/cfg.hpp>
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namespace sts::cfg {
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namespace {
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/* Convenience definitions. */
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constexpr u64 InitialProcessIdMinDeprecated = 0x00;
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constexpr u64 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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u64 g_min_initial_process_id = 0, g_max_initial_process_id = 0;
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u64 g_cur_process_id = 0;
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/* SD card helpers. */
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void GetPrivilegedProcessIdRange(u64 *out_min, u64 *out_max) {
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u64 min = 0, max = 0;
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if (ams::GetRuntimeFirmwareVersion() >= FirmwareVersion_500) {
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/* On 5.0.0+, we can get precise limits from svcGetSystemInfo. */
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R_ASSERT(svcGetSystemInfo(&min, SystemInfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Minimum));
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R_ASSERT(svcGetSystemInfo(&max, SystemInfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Maximum));
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} else if (ams::GetRuntimeFirmwareVersion() >= FirmwareVersion_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(&min, InfoType_InitialProcessIdRange, INVALID_HANDLE, InitialProcessIdRangeInfo_Minimum));
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R_ASSERT(svcGetInfo(&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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u64 GetCurrentProcessId() {
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u64 process_id = 0;
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R_ASSERT(svcGetProcessId(&process_id, CUR_PROCESS_HANDLE));
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return process_id;
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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 = 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(u64 *out_min, u64 *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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