mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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229 lines
8 KiB
C++
229 lines
8 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 <cstdlib>
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#include <cstdint>
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#include <cstring>
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#include <malloc.h>
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#include <switch.h>
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#include <atmosphere.h>
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#include <stratosphere.hpp>
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#include <stratosphere/cfg.hpp>
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#include <stratosphere/sm/sm_manager_api.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 0x40000
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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[0x1000];
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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 __libstratosphere_exception_handler(AtmosphereFatalErrorContext *ctx);
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}
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sts::ncm::TitleId __stratosphere_title_id = sts::ncm::TitleId::Pm;
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void __libnx_exception_handler(ThreadExceptionDump *ctx) {
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StratosphereCrashHandler(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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/* TODO: Libstratosphere this stuff during fatal/creport rewrite. */
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enum class DebugEventType : u32 {
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AttachProcess = 0,
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AttachThread = 1,
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ExitProcess = 2,
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ExitThread = 3,
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Exception = 4
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};
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struct AttachProcessInfo {
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sts::ncm::TitleId title_id;
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u64 process_id;
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char name[0xC];
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u32 flags;
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u64 user_exception_context_address; /* 5.0.0+ */
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};
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union DebugInfo {
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AttachProcessInfo attach_process;
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};
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struct DebugEventInfo {
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DebugEventType type;
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u32 flags;
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u64 thread_id;
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union {
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DebugInfo info;
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u64 _[0x40/sizeof(u64)];
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};
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};
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/* This uses debugging SVCs to retrieve a process's title id. */
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sts::ncm::TitleId GetProcessTitleId(u64 process_id) {
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/* Check if we should return our title 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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u64 current_process_id = 0;
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R_ASSERT(svcGetProcessId(¤t_process_id, CUR_PROCESS_HANDLE));
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if (current_process_id == process_id) {
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return __stratosphere_title_id;
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}
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/* Get a debug handle. */
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AutoHandle debug_handle;
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if (R_FAILED(svcDebugActiveProcess(debug_handle.GetPointer(), process_id))) {
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/* If we fail to debug a process other than our own, abort. */
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std::abort();
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}
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/* Loop until we get the event that tells us about the process. */
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DebugEventInfo d;
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while (R_SUCCEEDED(svcGetDebugEvent(reinterpret_cast<u8 *>(&d), debug_handle.Get()))) {
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if (d.type == DebugEventType::AttachProcess) {
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return d.info.attach_process.title_id;
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}
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}
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/* If we somehow didn't get the event, abort. */
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std::abort();
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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 title IDs can be known. */
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void RegisterPrivilegedProcess(u64 process_id) {
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fsprUnregisterProgram(process_id);
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fsprRegisterProgram(process_id, process_id, FsStorageId_NandSystem, PrivilegedFileAccessHeader, sizeof(PrivilegedFileAccessHeader), PrivilegedFileAccessControl, sizeof(PrivilegedFileAccessControl));
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sts::sm::manager::UnregisterProcess(process_id);
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sts::sm::manager::RegisterProcess(process_id, GetProcessTitleId(process_id), 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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u64 min_priv_process_id = 0, max_priv_process_id = 0;
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sts::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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u32 num_pids;
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u64 pids[ProcessCountMax];
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R_ASSERT(svcGetProcessList(&num_pids, pids, ProcessCountMax));
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for (size_t 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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SetFirmwareVersionForLibnx();
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DoWithSmSession([&]() {
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R_ASSERT(fsprInitialize());
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R_ASSERT(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_ASSERT(sts::sm::manager::EndInitialDefers());
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R_ASSERT(lrInitialize());
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R_ASSERT(ldrPmInitialize());
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R_ASSERT(splInitialize());
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R_ASSERT(fsInitialize());
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});
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CheckAtmosphereVersion(CURRENT_ATMOSPHERE_VERSION);
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}
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void __appExit(void) {
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/* Cleanup services. */
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fsdevUnmountAll();
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fsExit();
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splExit();
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ldrPmExit();
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lrExit();
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smManagerExit();
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fsprExit();
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}
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int main(int argc, char **argv)
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{
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/* Initialize process manager implementation. */
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R_ASSERT(sts::pm::impl::InitializeProcessManager());
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/* Create Server Manager. */
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static auto s_server_manager = WaitableManager(1);
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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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/* Also Note: PM was rewritten in 5.0.0, so the shell and dmnt services are different before/after. */
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if (GetRuntimeFirmwareVersion() >= FirmwareVersion_500) {
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s_server_manager.AddWaitable(new ServiceServer<sts::pm::shell::ShellService>("pm:shell", 3));
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s_server_manager.AddWaitable(new ServiceServer<sts::pm::dmnt::DebugMonitorService>("pm:dmnt", 3));
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} else {
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s_server_manager.AddWaitable(new ServiceServer<sts::pm::shell::ShellServiceDeprecated>("pm:shell", 3));
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s_server_manager.AddWaitable(new ServiceServer<sts::pm::dmnt::DebugMonitorServiceDeprecated>("pm:dmnt", 3));
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}
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s_server_manager.AddWaitable(new ServiceServer<sts::pm::bm::BootModeService>("pm:bm", 6));
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s_server_manager.AddWaitable(new ServiceServer<sts::pm::info::InformationService>("pm:info", 19));
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/* Loop forever, servicing our services. */
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s_server_manager.Process();
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return 0;
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}
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