mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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270 lines
11 KiB
C++
270 lines
11 KiB
C++
/*
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* Copyright (c) 2018-2020 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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#include "pm_boot_mode_service.hpp"
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#include "pm_debug_monitor_service.hpp"
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#include "pm_info_service.hpp"
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#include "pm_shell_service.hpp"
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#include "impl/pm_process_manager.hpp"
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extern "C" {
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extern u32 __start__;
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u32 __nx_applet_type = AppletType_None;
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#define INNER_HEAP_SIZE 0x0
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size_t nx_inner_heap_size = INNER_HEAP_SIZE;
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char nx_inner_heap[INNER_HEAP_SIZE];
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void __libnx_initheap(void);
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void __appInit(void);
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void __appExit(void);
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/* Exception handling. */
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alignas(16) u8 __nx_exception_stack[ams::os::MemoryPageSize];
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u64 __nx_exception_stack_size = sizeof(__nx_exception_stack);
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void __libnx_exception_handler(ThreadExceptionDump *ctx);
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void *__libnx_alloc(size_t size);
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void *__libnx_aligned_alloc(size_t alignment, size_t size);
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void __libnx_free(void *mem);
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}
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namespace ams {
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ncm::ProgramId CurrentProgramId = ncm::SystemProgramId::Pm;
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}
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using namespace ams;
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void __libnx_exception_handler(ThreadExceptionDump *ctx) {
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ams::CrashHandler(ctx);
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}
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void __libnx_initheap(void) {
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void* addr = nx_inner_heap;
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size_t size = nx_inner_heap_size;
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/* Newlib */
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extern char* fake_heap_start;
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extern char* fake_heap_end;
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fake_heap_start = (char*)addr;
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fake_heap_end = (char*)addr + size;
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}
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namespace {
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constexpr u32 PrivilegedFileAccessHeader[0x1C / sizeof(u32)] = {0x00000001, 0x00000000, 0x80000000, 0x0000001C, 0x00000000, 0x0000001C, 0x00000000};
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constexpr u32 PrivilegedFileAccessControl[0x2C / sizeof(u32)] = {0x00000001, 0x00000000, 0x80000000, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF};
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constexpr u8 PrivilegedServiceAccessControl[] = {0x80, '*', 0x00, '*'};
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constexpr size_t ProcessCountMax = 0x40;
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/* This uses debugging SVCs to retrieve a process's program id. */
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ncm::ProgramId GetProcessProgramId(os::ProcessId process_id) {
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/* Check if we should return our program id. */
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/* Doing this here works around a bug fixed in 6.0.0. */
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/* Not doing so will cause svcDebugActiveProcess to deadlock on lower firmwares if called for it's own process. */
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if (process_id == os::GetCurrentProcessId()) {
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return ams::CurrentProgramId;
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}
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/* Get a debug handle. */
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os::ManagedHandle debug_handle;
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R_ABORT_UNLESS(svcDebugActiveProcess(debug_handle.GetPointer(), static_cast<u64>(process_id)));
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/* Loop until we get the event that tells us about the process. */
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svc::DebugEventInfo d;
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while (true) {
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R_ABORT_UNLESS(svcGetDebugEvent(reinterpret_cast<u8 *>(&d), debug_handle.Get()));
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if (d.type == svc::DebugEvent_CreateProcess) {
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return ncm::ProgramId{d.info.create_process.program_id};
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}
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}
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}
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/* This works around a bug fixed by FS in 4.0.0. */
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/* Not doing so will cause KIPs with higher process IDs than 7 to be unable to use filesystem services. */
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/* It also registers privileged processes with SM, so that their program ids can be known. */
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void RegisterPrivilegedProcess(os::ProcessId process_id) {
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fsprUnregisterProgram(static_cast<u64>(process_id));
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fsprRegisterProgram(static_cast<u64>(process_id), static_cast<u64>(process_id), NcmStorageId_BuiltInSystem, PrivilegedFileAccessHeader, sizeof(PrivilegedFileAccessHeader), PrivilegedFileAccessControl, sizeof(PrivilegedFileAccessControl));
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sm::manager::UnregisterProcess(process_id);
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sm::manager::RegisterProcess(process_id, GetProcessProgramId(process_id), cfg::OverrideStatus{}, PrivilegedServiceAccessControl, sizeof(PrivilegedServiceAccessControl), PrivilegedServiceAccessControl, sizeof(PrivilegedServiceAccessControl));
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}
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void RegisterPrivilegedProcesses() {
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/* Get privileged process range. */
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os::ProcessId min_priv_process_id = os::InvalidProcessId, max_priv_process_id = os::InvalidProcessId;
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cfg::GetInitialProcessRange(&min_priv_process_id, &max_priv_process_id);
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/* Get list of processes, register all privileged ones. */
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s32 num_pids;
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os::ProcessId pids[ProcessCountMax];
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R_ABORT_UNLESS(svc::GetProcessList(&num_pids, reinterpret_cast<u64 *>(pids), ProcessCountMax));
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for (s32 i = 0; i < num_pids; i++) {
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if (min_priv_process_id <= pids[i] && pids[i] <= max_priv_process_id) {
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RegisterPrivilegedProcess(pids[i]);
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}
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}
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}
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}
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void __appInit(void) {
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hos::InitializeForStratosphere();
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sm::DoWithSession([&]() {
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R_ABORT_UNLESS(fsprInitialize());
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R_ABORT_UNLESS(smManagerInitialize());
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/* This works around a bug with process permissions on < 4.0.0. */
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/* It also informs SM of privileged process information. */
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RegisterPrivilegedProcesses();
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/* Use AMS manager extension to tell SM that FS has been worked around. */
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R_ABORT_UNLESS(sm::manager::EndInitialDefers());
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R_ABORT_UNLESS(ldrPmInitialize());
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spl::Initialize();
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});
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ams::CheckApiVersion();
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}
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void __appExit(void) {
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/* Cleanup services. */
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spl::Finalize();
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ldrPmExit();
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smManagerExit();
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fsprExit();
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}
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namespace {
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/* pm:shell, pm:dmnt, pm:bm, pm:info. */
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enum PortIndex {
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PortIndex_Shell,
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PortIndex_DebugMonitor,
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PortIndex_BootMode,
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PortIndex_Information,
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PortIndex_Count,
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};
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using ServerOptions = sf::hipc::DefaultServerManagerOptions;
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constexpr sm::ServiceName ShellServiceName = sm::ServiceName::Encode("pm:shell");
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constexpr size_t ShellMaxSessions = 8; /* Official maximum is 3. */
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constexpr sm::ServiceName DebugMonitorServiceName = sm::ServiceName::Encode("pm:dmnt");
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constexpr size_t DebugMonitorMaxSessions = 16;
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constexpr sm::ServiceName BootModeServiceName = sm::ServiceName::Encode("pm:bm");
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constexpr size_t BootModeMaxSessions = 8; /* Official maximum is 4. */
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constexpr sm::ServiceName InformationServiceName = sm::ServiceName::Encode("pm:info");
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constexpr size_t InformationMaxSessions = 48 - (ShellMaxSessions + DebugMonitorMaxSessions + BootModeMaxSessions);
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static_assert(InformationMaxSessions >= 16, "InformationMaxSessions");
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constexpr size_t MaxSessions = ShellMaxSessions + DebugMonitorMaxSessions + BootModeMaxSessions + InformationMaxSessions;
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static_assert(MaxSessions == 48, "MaxSessions");
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class ServerManager final : public sf::hipc::ServerManager<PortIndex_Count, ServerOptions, MaxSessions> {
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private:
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virtual ams::Result OnNeedsToAccept(int port_index, Server *server) override;
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};
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ServerManager g_server_manager;
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/* NOTE: Nintendo only uses an unmanaged object for boot mode service, but no pm service has any class members/state, so we'll do it for all. */
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sf::UnmanagedServiceObject<pm::impl::IShellInterface, pm::ShellService> g_shell_service;
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sf::UnmanagedServiceObject<pm::impl::IDeprecatedShellInterface, pm::ShellService> g_deprecated_shell_service;
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sf::UnmanagedServiceObject<pm::impl::IDebugMonitorInterface, pm::DebugMonitorService> g_dmnt_service;
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sf::UnmanagedServiceObject<pm::impl::IDeprecatedDebugMonitorInterface, pm::DebugMonitorService> g_deprecated_dmnt_service;
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sf::UnmanagedServiceObject<pm::impl::IBootModeInterface, pm::BootModeService> g_boot_mode_service;
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sf::UnmanagedServiceObject<pm::impl::IInformationInterface, pm::InformationService> g_information_service;
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ams::Result ServerManager::OnNeedsToAccept(int port_index, Server *server) {
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switch (port_index) {
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case PortIndex_Shell:
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if (hos::GetVersion() >= hos::Version_5_0_0) {
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return this->AcceptImpl(server, g_shell_service.GetShared());
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} else {
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return this->AcceptImpl(server, g_deprecated_shell_service.GetShared());
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}
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case PortIndex_DebugMonitor:
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if (hos::GetVersion() >= hos::Version_5_0_0) {
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return this->AcceptImpl(server, g_dmnt_service.GetShared());
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} else {
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return this->AcceptImpl(server, g_deprecated_dmnt_service.GetShared());
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}
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case PortIndex_BootMode:
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return this->AcceptImpl(server, g_boot_mode_service.GetShared());
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case PortIndex_Information:
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return this->AcceptImpl(server, g_information_service.GetShared());
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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}
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void *operator new(size_t size) {
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AMS_ABORT("operator new(size_t) was called");
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}
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void operator delete(void *p) {
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AMS_ABORT("operator delete(void *) was called");
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}
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void *__libnx_alloc(size_t size) {
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AMS_ABORT("__libnx_alloc was called");
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}
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void *__libnx_aligned_alloc(size_t alignment, size_t size) {
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AMS_ABORT("__libnx_aligned_alloc was called");
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}
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void __libnx_free(void *mem) {
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AMS_ABORT("__libnx_free was called");
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}
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int main(int argc, char **argv)
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{
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/* Set thread name. */
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os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(pm, Main));
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AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(pm, Main));
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/* Initialize process manager implementation. */
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R_ABORT_UNLESS(pm::impl::InitializeProcessManager());
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/* Create Services. */
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/* NOTE: Extra sessions have been added to pm:bm and pm:info to facilitate access by the rest of stratosphere. */
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Shell, ShellServiceName, ShellMaxSessions));
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_DebugMonitor, DebugMonitorServiceName, DebugMonitorMaxSessions));
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_BootMode, BootModeServiceName, BootModeMaxSessions));
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Information, InformationServiceName, InformationMaxSessions));
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/* Loop forever, servicing our services. */
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g_server_manager.LoopProcess();
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return 0;
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}
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