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fssrv: skeleton more program registry logic

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Michael Scire 2021-12-07 02:04:39 -08:00 • committed by SciresM
parent 33701bb387
commit e8d14eb77d
13 changed files with 448 additions and 3 deletions
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69
libraries/libstratosphere/source/fssrv/impl/fssrv_program_info.cpp Normal file
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/*
* 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>
#include "fssrv_program_info.hpp"
namespace ams::fssrv::impl {
namespace {
constinit os::SdkMutex g_mutex;
constinit bool g_initialized = false;
constinit u64 g_initial_process_id_min = 0;
constinit u64 g_initial_process_id_max = 0;
constinit u64 g_current_process_id = 0;
ALWAYS_INLINE void InitializeInitialAndCurrentProcessId() {
if (AMS_UNLIKELY(!g_initialized)) {
std::scoped_lock lk(g_mutex);
if (AMS_LIKELY(!g_initialized)) {
/* Get initial process id range. */
R_ABORT_UNLESS(svc::GetSystemInfo(std::addressof(g_initial_process_id_min), svc::SystemInfoType_InitialProcessIdRange, svc::InvalidHandle, svc::InitialProcessIdRangeInfo_Minimum));
R_ABORT_UNLESS(svc::GetSystemInfo(std::addressof(g_initial_process_id_max), svc::SystemInfoType_InitialProcessIdRange, svc::InvalidHandle, svc::InitialProcessIdRangeInfo_Maximum));
AMS_ABORT_UNLESS(0 < g_initial_process_id_min);
AMS_ABORT_UNLESS(g_initial_process_id_min <= g_initial_process_id_max);
/* Get current procss id. */
R_ABORT_UNLESS(svc::GetProcessId(std::addressof(g_current_process_id), svc::PseudoHandle::CurrentProcess));
/* Set initialized. */
g_initialized = true;
}
}
}
}
bool IsInitialProgram(u64 process_id) {
/* Initialize/sanity check. */
InitializeInitialAndCurrentProcessId();
AMS_ABORT_UNLESS(g_initial_process_id_min > 0);
/* Check process id in range. */
return g_initial_process_id_min <= process_id && process_id <= g_initial_process_id_max;
}
bool IsCurrentProcess(u64 process_id) {
/* Initialize. */
InitializeInitialAndCurrentProcessId();
return process_id == g_current_process_id;
}
}