Atmosphere/stratosphere/pm/source/pm_registration.cpp

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#include <switch.h>
#include <stratosphere.hpp>
#include <atomic>
#include "pm_registration.hpp"
#include "pm_process_wait.hpp"
static ProcessList g_process_list;
static ProcessList g_dead_process_list;
static HosSemaphore g_sema_finish_launch;
static HosMutex g_process_launch_mutex;
static Registration::ProcessLaunchState g_process_launch_state;
static std::atomic_bool g_debug_next_application(false);
static std::atomic<u64> g_debug_on_launch_tid(0);
static SystemEvent *g_process_event = NULL;
static SystemEvent *g_debug_title_event = NULL;
static SystemEvent *g_debug_application_event = NULL;
static SystemEvent *g_process_launch_start_event = NULL;
static const u64 g_memory_resource_limits[5][3] = {
{0x010D00000ULL, 0x0CD500000ULL, 0x021700000ULL},
{0x01E100000ULL, 0x080000000ULL, 0x061800000ULL},
{0x014800000ULL, 0x0CD500000ULL, 0x01DC00000ULL},
{0x028D00000ULL, 0x133400000ULL, 0x023800000ULL},
{0x028D00000ULL, 0x0CD500000ULL, 0x089700000ULL}
};
/* These are the limits for LimitableResources. */
/* Memory, Threads, Events, TransferMemories, Sessions. */
static u64 g_resource_limits[3][5] = {
{0x0, 0x1FC, 0x258, 0x80, 0x31A},
{0x0, 0x60, 0x0, 0x20, 0x1},
{0x0, 0x60, 0x0, 0x20, 0x5},
};
static Handle g_resource_limit_handles[3] = {0};
void Registration::InitializeSystemResources() {
g_process_event = new SystemEvent(&IEvent::PanicCallback);
g_debug_title_event = new SystemEvent(&IEvent::PanicCallback);
g_debug_application_event = new SystemEvent(&IEvent::PanicCallback);
g_process_launch_start_event = new SystemEvent(&Registration::ProcessLaunchStartCallback);
/* Get memory limits. */
u64 memory_arrangement;
if (R_FAILED(splGetConfig(SplConfigItem_MemoryArrange, &memory_arrangement))) {
/* TODO: panic. */
}
memory_arrangement &= 0x3F;
int memory_limit_type;
switch (memory_arrangement) {
case 2:
memory_limit_type = 1;
break;
case 3:
memory_limit_type = 2;
break;
case 17:
memory_limit_type = 3;
break;
case 18:
memory_limit_type = 4;
break;
default:
memory_limit_type = 0;
break;
}
for (unsigned int i = 0; i < 3; i++) {
g_resource_limits[i][0] = g_memory_resource_limits[memory_limit_type][i];
}
/* Create resource limits. */
for (unsigned int i = 0; i < 3; i++) {
if (i > 0) {
if (R_FAILED(svcCreateResourceLimit(&g_resource_limit_handles[i]))) {
/* TODO: Panic. */
}
} else {
u64 out = 0;
if (R_FAILED(svcGetInfo(&out, 9, 0, 0))) {
/* TODO: Panic. */
}
g_resource_limit_handles[i] = (Handle)out;
}
for (unsigned int r = 0; r < 5; r++) {
if (R_FAILED(svcSetResourceLimitLimitValue(g_resource_limit_handles[i], (LimitableResource)r, g_resource_limits[i][r]))) {
/* TODO: Panic. */
}
}
}
}
Result Registration::ProcessLaunchStartCallback(Handle *handles, size_t num_handles, u64 timeout) {
Registration::HandleProcessLaunch();
return 0;
}
IWaitable *Registration::GetProcessLaunchStartEvent() {
return g_process_launch_start_event;
}
IWaitable *Registration::GetProcessList() {
return &g_process_list;
}
void Registration::HandleProcessLaunch() {
LoaderProgramInfo program_info = {0};
Result rc;
u64 launch_flags = g_process_launch_state.launch_flags;
const u8 *acid_fac, *aci0_fah, *acid_sac, *aci0_sac;
u64 *out_pid = g_process_launch_state.out_pid;
u32 reslimit_idx;
Process new_process = {0};
new_process.tid_sid = g_process_launch_state.tid_sid;
/* Check that this is a real program. */
if (R_FAILED((rc = ldrPmGetProgramInfo(new_process.tid_sid.title_id, new_process.tid_sid.storage_id, &program_info)))) {
goto HANDLE_PROCESS_LAUNCH_END;
}
/* Get the resource limit handle, ensure that we can launch the program. */
if ((program_info.application_type & 3) == 1) {
if (HasApplicationProcess()) {
rc = 0xA0F;
goto HANDLE_PROCESS_LAUNCH_END;
}
reslimit_idx = 1;
} else {
reslimit_idx = 2 * ((program_info.application_type & 3) == 2);
}
/* Try to register the title for launch in loader... */
if (R_FAILED((rc = ldrPmRegisterTitle(new_process.tid_sid.title_id, new_process.tid_sid.storage_id, &new_process.ldr_queue_index)))) {
goto HANDLE_PROCESS_LAUNCH_END;
}
/* Make sure the previous application is cleaned up. */
if ((program_info.application_type & 3) == 1) {
EnsureApplicationResourcesAvailable();
}
/* Try to create the process... */
if (R_FAILED((rc = ldrPmCreateProcess(LAUNCHFLAGS_ARGLOW(launch_flags) | LAUNCHFLAGS_ARGHIGH(launch_flags), new_process.ldr_queue_index, g_resource_limit_handles[reslimit_idx], &new_process.handle)))) {
goto PROCESS_CREATION_FAILED;
}
/* Get the new process's id. */
svcGetProcessId(&new_process.pid, new_process.handle);
/* Register with FS. */
acid_fac = program_info.ac_buffer + program_info.acid_sac_size + program_info.aci0_sac_size;
aci0_fah = acid_fac + program_info.acid_fac_size;
if (R_FAILED((rc = fsprRegisterProgram(new_process.pid, new_process.tid_sid.title_id, new_process.tid_sid.storage_id, aci0_fah, program_info.aci0_fah_size, acid_fac, program_info.acid_fac_size)))) {
goto FS_REGISTRATION_FAILED;
}
/* Register with PM. */
acid_sac = program_info.ac_buffer;
aci0_sac = program_info.ac_buffer + program_info.acid_sac_size;
if (R_FAILED((rc = smManagerRegisterProcess(new_process.pid, acid_sac, program_info.acid_sac_size, aci0_sac, program_info.aci0_sac_size)))) {
goto SM_REGISTRATION_FAILED;
}
/* Setup process flags. */
if (program_info.application_type & 1) {
new_process.flags |= 0x40;
}
if (kernelAbove200() && LAUNCHFLAGS_NOTIYDEBUGSPECIAL(launch_flags) && (program_info.application_type & 4)) {
}
if (LAUNCHFLAGS_NOTIFYWHENEXITED(launch_flags)) {
new_process.flags |= 1;
}
if (LAUNCHFLAGS_NOTIFYDEBUGEVENTS(launch_flags) && (!kernelAbove200() || (program_info.application_type & 4))) {
new_process.flags |= 0x8;
}
/* Add process to the list. */
Registration::AddProcessToList(&new_process);
/* Signal, if relevant. */
if (new_process.tid_sid.title_id == g_debug_on_launch_tid.load()) {
g_debug_title_event->signal_event();
g_debug_on_launch_tid = 0;
rc = 0;
} else if ((new_process.flags & 0x40) && g_debug_next_application.load()) {
g_debug_application_event->signal_event();
g_debug_next_application = false;
rc = 0;
} else if (LAUNCHFLAGS_STARTSUSPENDED(launch_flags)) {
rc = 0;
} else {
rc = svcStartProcess(new_process.handle, program_info.main_thread_priority, program_info.default_cpu_id, program_info.main_thread_stack_size);
if (R_SUCCEEDED(rc)) {
SetProcessState(new_process.pid, ProcessState_DebugDetached);
}
}
if (R_FAILED(rc)) {
Registration::RemoveProcessFromList(new_process.pid);
smManagerUnregisterProcess(new_process.pid);
}
SM_REGISTRATION_FAILED:
if (R_FAILED(rc)) {
fsprUnregisterProgram(new_process.pid);
}
FS_REGISTRATION_FAILED:
if (R_FAILED(rc)) {
svcCloseHandle(new_process.handle);
}
PROCESS_CREATION_FAILED:
if (R_FAILED(rc)) {
ldrPmUnregisterTitle(new_process.ldr_queue_index);
}
HANDLE_PROCESS_LAUNCH_END:
g_process_launch_state.result = rc;
if (R_SUCCEEDED(rc)) {
*out_pid = new_process.pid;
}
g_sema_finish_launch.Signal();
}
Result Registration::LaunchProcess(u64 title_id, FsStorageId storage_id, u64 launch_flags, u64 *out_pid) {
Result rc;
/* Only allow one mutex to exist. */
g_process_launch_mutex.Lock();
g_process_launch_state.tid_sid.title_id = title_id;
g_process_launch_state.tid_sid.storage_id = storage_id;
g_process_launch_state.launch_flags = launch_flags;
g_process_launch_state.out_pid = out_pid;
/* Start a launch, and wait for it to exit. */
g_process_launch_start_event->signal_event();
g_sema_finish_launch.Wait();
rc = g_process_launch_state.result;
g_process_launch_mutex.Unlock();
return rc;
}
Result Registration::LaunchProcessByTidSid(TidSid tid_sid, u64 launch_flags, u64 *out_pid) {
return LaunchProcess(tid_sid.title_id, tid_sid.storage_id, launch_flags, out_pid);
};
void Registration::HandleSignaledProcess(Process *process) {
u64 tmp;
/* Reset the signal. */
svcResetSignal(process->handle);
ProcessState old_state;
old_state = process->state;
svcGetProcessInfo(&tmp, process->handle, ProcessInfoType_ProcessState);
process->state = (ProcessState)tmp;
if (old_state == ProcessState_Crashed && process->state != ProcessState_Crashed) {
process->flags &= ~0x4;
}
switch (process->state) {
case ProcessState_Created:
case ProcessState_DebugAttached:
case ProcessState_Exiting:
break;
case ProcessState_DebugDetached:
if (process->flags & 8) {
process->flags &= ~0x30;
process->flags |= 0x10;
g_process_event->signal_event();
}
if (kernelAbove200() && process->flags & 0x80) {
process->flags &= ~0x180;
process->flags |= 0x100;
}
break;
case ProcessState_Crashed:
process->flags |= 6;
g_process_event->signal_event();
break;
case ProcessState_Running:
if (process->flags & 8) {
process->flags &= ~0x30;
process->flags |= 0x10;
g_process_event->signal_event();
}
break;
case ProcessState_Exited:
if (process->flags & 1 && !kernelAbove500()) {
g_process_event->signal_event();
} else {
FinalizeExitedProcess(process);
}
break;
case ProcessState_DebugSuspended:
if (process->flags & 8) {
process->flags |= 0x30;
g_process_event->signal_event();
}
break;
}
}
void Registration::FinalizeExitedProcess(Process *process) {
bool signal_debug_process_5x = kernelAbove500() && process->flags & 1;
g_process_list.Lock();
/* Unregister with FS. */
if (R_FAILED(fsprUnregisterProgram(process->pid))) {
/* TODO: Panic. */
}
/* Unregister with SM. */
if (R_FAILED(smManagerUnregisterProcess(process->pid))) {
/* TODO: Panic. */
}
/* Unregister with LDR. */
if (R_FAILED(ldrPmUnregisterTitle(process->ldr_queue_index))) {
/* TODO: Panic. */
}
/* Close the process's handle. */
svcCloseHandle(process->handle);
/* Insert into dead process list, if relevant. */
if (signal_debug_process_5x) {
g_dead_process_list.Lock();
g_dead_process_list.process_waiters.push_back(new ProcessWaiter(process));
g_dead_process_list.Unlock();
}
/* Remove NOTE: This probably frees process. */
RemoveProcessFromList(process->pid);
g_process_list.Unlock();
if (signal_debug_process_5x) {
g_process_event->signal_event();
}
}
void Registration::AddProcessToList(Process *process) {
g_process_list.Lock();
g_process_list.process_waiters.push_back(new ProcessWaiter(process));
g_process_list.Unlock();
}
void Registration::RemoveProcessFromList(u64 pid) {
g_process_list.Lock();
/* Remove process from list. */
for (unsigned int i = 0; i < g_process_list.process_waiters.size(); i++) {
ProcessWaiter *pw = g_process_list.process_waiters[i];
Registration::Process *process = pw->get_process();
if (process->pid == pid) {
g_process_list.process_waiters.erase(g_process_list.process_waiters.begin() + i);
svcCloseHandle(process->handle);
delete pw;
break;
}
}
g_process_list.Unlock();
}
void Registration::SetProcessState(u64 pid, ProcessState new_state) {
g_process_list.Lock();
/* Set process state. */
for (unsigned int i = 0; i < g_process_list.process_waiters.size(); i++) {
ProcessWaiter *pw = g_process_list.process_waiters[i];
Registration::Process *process = pw->get_process();
if (process->pid == pid) {
process->state = new_state;
break;
}
}
g_process_list.Unlock();
}
bool Registration::HasApplicationProcess() {
bool has_app = false;
g_process_list.Lock();
for (auto &pw : g_process_list.process_waiters) {
if (pw->get_process()->flags & 0x40) {
has_app = true;
break;
}
}
g_process_list.Unlock();
return has_app;
}
void Registration::EnsureApplicationResourcesAvailable() {
Handle application_reslimit_h = g_resource_limit_handles[1];
for (unsigned int i = 0; i < 5; i++) {
u64 result;
do {
if (R_FAILED(svcGetResourceLimitCurrentValue(&result, application_reslimit_h, (LimitableResource)i))) {
return;
}
svcSleepThread(1000000ULL);
} while (result);
}
}