mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-23 04:41:12 +00:00
496adb0018
* Work around Clang's incomplete C++20 support for omitting typename * vapours: fix Clang error about missing return in constexpr function * stratosphere: fix call to non-constexpr strlen in constexpr function strlen being constexpr is a non-compliant GCC extension; Clang explicitly rejects it: https://reviews.llvm.org/D23692 * stratosphere: add a bunch of missing override specifiers * stratosphere: work around Clang consteval bug Minimal example: https://godbolt.org/z/MoM64v93M The issue seems to be that Clang does not consider f(x) to be a constant expression if x comes from a template argument that isn't a non-type auto template argument (???) We can work around this by relaxing GetMessageHeaderForCheck (by using constexpr instead of consteval). This produces no functional changes because the result of GetMessageHeaderForCheck() is assigned to a constexpr variable, so the result is guaranteed to be computed at compile-time. * stratosphere: fix missing require clauses in definitions GCC not requiring the require clauses to be repeated for member definitions is actually a compiler bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96830 Clang rejects declarations with missing require clauses. * Fix ALWAYS_INLINE_LAMBDA and parameter list relative order While GCC doesn't seem to care about the position of the always_inline attribute relative to the parameter list, Clang is very picky and requires the attribute to appear after the parameter list (and before a trailing return type) * stratosphere: fix static constexpr member variable with incomplete type GCC accepts this for some reason (because of the lambda?) but Clang correctly rejects this.
423 lines
22 KiB
C++
423 lines
22 KiB
C++
/*
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* Copyright (c) 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 <mesosphere.hpp>
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namespace ams::kern::svc {
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/* ============================= Common ============================= */
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namespace {
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constexpr bool IsValidVirtualCoreId(int32_t core_id) {
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return (0 <= core_id && core_id < static_cast<int32_t>(cpu::NumVirtualCores));
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}
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void ExitProcess() {
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GetCurrentProcess().Exit();
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MESOSPHERE_PANIC("Process survived call to exit");
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}
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Result GetProcessId(u64 *out_process_id, ams::svc::Handle handle) {
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/* Get the object from the handle table. */
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KScopedAutoObject obj = GetCurrentProcess().GetHandleTable().GetObject<KAutoObject>(handle);
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R_UNLESS(obj.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the process from the object. */
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if (KProcess *process = obj->DynamicCast<KProcess *>(); process != nullptr) {
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/* The object is a process, so we can use it directly. */
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/* Make sure the target process exists. */
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R_UNLESS(process != nullptr, svc::ResultInvalidHandle());
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/* Get the process id. */
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*out_process_id = process->GetId();
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} else if (KThread *t = obj->DynamicCast<KThread *>(); t != nullptr) {
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/* The object is a thread, so we want to use its parent. */
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KProcess *process = t->GetOwnerProcess();
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/* Make sure the target process exists. */
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R_UNLESS(process != nullptr, svc::ResultInvalidHandle());
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/* Get the process id. */
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*out_process_id = process->GetId();
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} else if (KDebug *d = obj->DynamicCast<KDebug *>(); d != nullptr) {
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/* The object is a debug, so we want to use the process it's attached to. */
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/* Make sure the target process exists. */
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R_UNLESS(d->IsAttached(), svc::ResultInvalidHandle());
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R_UNLESS(d->OpenProcess(), svc::ResultInvalidHandle());
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ON_SCOPE_EXIT { d->CloseProcess(); };
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/* Get the process id. */
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*out_process_id = d->GetProcessUnsafe()->GetProcessId();
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}
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return ResultSuccess();
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}
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Result GetProcessList(int32_t *out_num_processes, KUserPointer<uint64_t *> out_process_ids, int32_t max_out_count) {
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/* Validate that the out count is valid. */
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R_UNLESS((0 <= max_out_count && max_out_count <= static_cast<int32_t>(std::numeric_limits<int32_t>::max() / sizeof(u64))), svc::ResultOutOfRange());
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/* Validate that the pointer is in range. */
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if (max_out_count > 0) {
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R_UNLESS(GetCurrentProcess().GetPageTable().Contains(KProcessAddress(out_process_ids.GetUnsafePointer()), max_out_count * sizeof(u64)), svc::ResultInvalidCurrentMemory());
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}
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/* Get the process list. */
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return KProcess::GetProcessList(out_num_processes, out_process_ids, max_out_count);
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}
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Result CreateProcess(ams::svc::Handle *out, const ams::svc::CreateProcessParameter ¶ms, KUserPointer<const uint32_t *> user_caps, int32_t num_caps) {
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/* Validate the capabilities pointer. */
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R_UNLESS(num_caps >= 0, svc::ResultInvalidPointer());
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if (num_caps > 0) {
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/* Check for overflow. */
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R_UNLESS(((num_caps * sizeof(u32)) / sizeof(u32)) == static_cast<size_t>(num_caps), svc::ResultInvalidPointer());
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/* Validate that the pointer is in range. */
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R_UNLESS(GetCurrentProcess().GetPageTable().Contains(KProcessAddress(user_caps.GetUnsafePointer()), num_caps * sizeof(u32)), svc::ResultInvalidPointer());
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}
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/* Validate that the parameter flags are valid. */
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R_UNLESS((params.flags & ~ams::svc::CreateProcessFlag_All) == 0, svc::ResultInvalidEnumValue());
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/* Validate that 64-bit process is okay. */
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const bool is_64_bit = (params.flags & ams::svc::CreateProcessFlag_Is64Bit) != 0;
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if constexpr (sizeof(void *) < sizeof(u64)) {
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R_UNLESS(!is_64_bit, svc::ResultInvalidCombination());
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}
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/* Decide on an address space map region. */
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uintptr_t map_start, map_end;
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size_t map_size;
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switch (params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask) {
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case ams::svc::CreateProcessFlag_AddressSpace32Bit:
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case ams::svc::CreateProcessFlag_AddressSpace32BitWithoutAlias:
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{
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map_start = KAddressSpaceInfo::GetAddressSpaceStart(32, KAddressSpaceInfo::Type_MapSmall);
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map_size = KAddressSpaceInfo::GetAddressSpaceSize(32, KAddressSpaceInfo::Type_MapSmall);
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map_end = map_start + map_size;
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}
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break;
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case ams::svc::CreateProcessFlag_AddressSpace64BitDeprecated:
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{
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/* 64-bit address space requires 64-bit process. */
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R_UNLESS(is_64_bit, svc::ResultInvalidCombination());
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map_start = KAddressSpaceInfo::GetAddressSpaceStart(36, KAddressSpaceInfo::Type_MapSmall);
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map_size = KAddressSpaceInfo::GetAddressSpaceSize(36, KAddressSpaceInfo::Type_MapSmall);
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map_end = map_start + map_size;
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}
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break;
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case ams::svc::CreateProcessFlag_AddressSpace64Bit:
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{
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/* 64-bit address space requires 64-bit process. */
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R_UNLESS(is_64_bit, svc::ResultInvalidCombination());
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map_start = KAddressSpaceInfo::GetAddressSpaceStart(39, KAddressSpaceInfo::Type_Map39Bit);
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map_end = map_start + KAddressSpaceInfo::GetAddressSpaceSize(39, KAddressSpaceInfo::Type_Map39Bit);
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map_size = KAddressSpaceInfo::GetAddressSpaceSize(39, KAddressSpaceInfo::Type_Heap);
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}
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break;
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default:
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return svc::ResultInvalidEnumValue();
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}
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/* Validate the pool partition. */
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if (GetTargetFirmware() >= TargetFirmware_5_0_0) {
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switch (params.flags & ams::svc::CreateProcessFlag_PoolPartitionMask) {
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case ams::svc::CreateProcessFlag_PoolPartitionApplication:
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case ams::svc::CreateProcessFlag_PoolPartitionApplet:
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case ams::svc::CreateProcessFlag_PoolPartitionSystem:
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case ams::svc::CreateProcessFlag_PoolPartitionSystemNonSecure:
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break;
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default:
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return svc::ResultInvalidEnumValue();
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}
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}
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/* Check that the code address is aligned. */
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R_UNLESS(util::IsAligned(params.code_address, KProcess::AslrAlignment), svc::ResultInvalidAddress());
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/* Check that the number of code pages is >= 0. */
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R_UNLESS(params.code_num_pages >= 0, svc::ResultInvalidSize());
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/* Check that the number of extra resource pages is >= 0. */
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R_UNLESS(params.system_resource_num_pages >= 0, svc::ResultInvalidSize());
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/* Convert to sizes. */
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const size_t code_num_pages = params.code_num_pages;
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const size_t system_resource_num_pages = params.system_resource_num_pages;
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const size_t total_pages = code_num_pages + system_resource_num_pages;
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const size_t code_size = code_num_pages * PageSize;
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const size_t system_resource_size = system_resource_num_pages * PageSize;
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const size_t total_size = code_size + system_resource_size;
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/* Check for overflow. */
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R_UNLESS((code_size / PageSize) == code_num_pages, svc::ResultInvalidSize());
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R_UNLESS((system_resource_size / PageSize) == system_resource_num_pages, svc::ResultInvalidSize());
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R_UNLESS((code_num_pages + system_resource_num_pages) >= code_num_pages, svc::ResultOutOfMemory());
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R_UNLESS((total_size / PageSize) == total_pages, svc::ResultInvalidSize());
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/* Check that the number of pages is valid. */
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R_UNLESS(code_num_pages < (map_size / PageSize), svc::ResultInvalidMemoryRegion());
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/* Validate that the code falls within the map reigon. */
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R_UNLESS(map_start <= params.code_address, svc::ResultInvalidMemoryRegion());
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R_UNLESS(params.code_address < params.code_address + code_size, svc::ResultInvalidMemoryRegion());
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R_UNLESS(params.code_address + code_size - 1 <= map_end - 1, svc::ResultInvalidMemoryRegion());
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/* Check that the number of pages is valid for the kernel address space. */
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R_UNLESS(code_num_pages < (kern::MainMemorySizeMax / PageSize), svc::ResultOutOfMemory());
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R_UNLESS(system_resource_num_pages < (kern::MainMemorySizeMax / PageSize), svc::ResultOutOfMemory());
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R_UNLESS(total_pages < (kern::MainMemorySizeMax / PageSize), svc::ResultOutOfMemory());
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/* Check that optimized memory allocation is used only for applications. */
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const bool optimize_allocs = (params.flags & ams::svc::CreateProcessFlag_OptimizeMemoryAllocation) != 0;
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const bool is_application = (params.flags & ams::svc::CreateProcessFlag_IsApplication) != 0;
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R_UNLESS(!optimize_allocs || is_application, svc::ResultBusy());
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/* Get the current handle table. */
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auto &handle_table = GetCurrentProcess().GetHandleTable();
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/* Create the new process. */
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KProcess *process = KProcess::Create();
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R_UNLESS(process != nullptr, svc::ResultOutOfResource());
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/* Ensure that the only reference to the process is in the handle table when we're done. */
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ON_SCOPE_EXIT { process->Close(); };
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/* Get the resource limit from the handle. */
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KScopedAutoObject resource_limit = handle_table.GetObject<KResourceLimit>(params.reslimit);
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R_UNLESS(resource_limit.IsNotNull() || params.reslimit == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Decide on a resource limit for the process. */
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KResourceLimit *process_resource_limit = resource_limit.IsNotNull() ? resource_limit.GetPointerUnsafe() : std::addressof(Kernel::GetSystemResourceLimit());
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/* Get the pool for the process. */
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const auto pool = [](u32 flags) ALWAYS_INLINE_LAMBDA -> KMemoryManager::Pool {
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if (GetTargetFirmware() >= TargetFirmware_5_0_0) {
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switch (flags & ams::svc::CreateProcessFlag_PoolPartitionMask) {
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case ams::svc::CreateProcessFlag_PoolPartitionApplication:
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return KMemoryManager::Pool_Application;
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case ams::svc::CreateProcessFlag_PoolPartitionApplet:
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return KMemoryManager::Pool_Applet;
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case ams::svc::CreateProcessFlag_PoolPartitionSystem:
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return KMemoryManager::Pool_System;
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case ams::svc::CreateProcessFlag_PoolPartitionSystemNonSecure:
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default:
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return KMemoryManager::Pool_SystemNonSecure;
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}
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} else if (GetTargetFirmware() >= TargetFirmware_4_0_0) {
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if ((flags & ams::svc::CreateProcessFlag_DeprecatedUseSecureMemory) != 0) {
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return KMemoryManager::Pool_Secure;
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} else {
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return static_cast<KMemoryManager::Pool>(KSystemControl::GetCreateProcessMemoryPool());
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}
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} else {
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return static_cast<KMemoryManager::Pool>(KSystemControl::GetCreateProcessMemoryPool());
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}
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}(params.flags);
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/* Initialize the process. */
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R_TRY(process->Initialize(params, user_caps, num_caps, process_resource_limit, pool));
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/* Register the process. */
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KProcess::Register(process);
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/* Add the process to the handle table. */
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R_TRY(handle_table.Add(out, process));
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return ResultSuccess();
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}
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template<typename T>
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Result CreateProcess(ams::svc::Handle *out, KUserPointer<const T *> user_parameters, KUserPointer<const uint32_t *> user_caps, int32_t num_caps) {
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/* Read the parameters from user space. */
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T params;
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R_TRY(user_parameters.CopyTo(std::addressof(params)));
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/* Invoke the implementation. */
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if constexpr (std::same_as<T, ams::svc::CreateProcessParameter>) {
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return CreateProcess(out, params, user_caps, num_caps);
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} else {
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/* Convert the parameters. */
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ams::svc::CreateProcessParameter converted_params;
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static_assert(sizeof(T{}.name) == sizeof(ams::svc::CreateProcessParameter{}.name));
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std::memcpy(converted_params.name, params.name, sizeof(converted_params.name));
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converted_params.version = params.version;
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converted_params.program_id = params.program_id;
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converted_params.code_address = params.code_address;
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converted_params.code_num_pages = params.code_num_pages;
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converted_params.flags = params.flags;
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converted_params.reslimit = params.reslimit;
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converted_params.system_resource_num_pages = params.system_resource_num_pages;
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/* Invoke. */
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return CreateProcess(out, converted_params, user_caps, num_caps);
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}
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}
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Result StartProcess(ams::svc::Handle process_handle, int32_t priority, int32_t core_id, uint64_t main_thread_stack_size) {
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/* Validate stack size. */
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R_UNLESS(main_thread_stack_size == static_cast<size_t>(main_thread_stack_size), svc::ResultOutOfMemory());
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/* Get the target process. */
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KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle);
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R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
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/* Validate the core id. */
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R_UNLESS(IsValidVirtualCoreId(core_id), svc::ResultInvalidCoreId());
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R_UNLESS(((1ul << core_id) & process->GetCoreMask()) != 0, svc::ResultInvalidCoreId());
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/* Validate the priority. */
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R_UNLESS(ams::svc::HighestThreadPriority <= priority && priority <= ams::svc::LowestThreadPriority, svc::ResultInvalidPriority());
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R_UNLESS(process->CheckThreadPriority(priority), svc::ResultInvalidPriority());
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/* Set the process's ideal processor. */
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process->SetIdealCoreId(core_id);
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/* Run the process. */
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return process->Run(priority, static_cast<size_t>(main_thread_stack_size));
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}
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Result TerminateProcess(ams::svc::Handle process_handle) {
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/* Get the target process. */
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KProcess *process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle).ReleasePointerUnsafe();
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R_UNLESS(process != nullptr, svc::ResultInvalidHandle());
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if (process != GetCurrentProcessPointer()) {
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/* We're terminating another process. Close our reference after terminating the process. */
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ON_SCOPE_EXIT { process->Close(); };
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/* Terminate the process. */
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R_TRY(process->Terminate());
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} else {
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/* We're terminating ourselves. Close our reference immediately. */
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process->Close();
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/* Exit. */
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ExitProcess();
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}
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return ResultSuccess();
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}
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Result GetProcessInfo(int64_t *out, ams::svc::Handle process_handle, ams::svc::ProcessInfoType info_type) {
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/* Get the target process. */
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KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle);
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R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the info. */
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switch (info_type) {
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case ams::svc::ProcessInfoType_ProcessState:
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{
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/* Get the process's state. */
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KProcess::State state;
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{
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KScopedLightLock proc_lk(process->GetStateLock());
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KScopedSchedulerLock sl;
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state = process->GetState();
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}
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/* Convert to svc state. */
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switch (state) {
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case KProcess::State_Created: *out = ams::svc::ProcessState_Created; break;
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case KProcess::State_CreatedAttached: *out = ams::svc::ProcessState_CreatedAttached; break;
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case KProcess::State_Running: *out = ams::svc::ProcessState_Running; break;
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case KProcess::State_Crashed: *out = ams::svc::ProcessState_Crashed; break;
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case KProcess::State_RunningAttached: *out = ams::svc::ProcessState_RunningAttached; break;
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case KProcess::State_Terminating: *out = ams::svc::ProcessState_Terminating; break;
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case KProcess::State_Terminated: *out = ams::svc::ProcessState_Terminated; break;
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case KProcess::State_DebugBreak: *out = ams::svc::ProcessState_DebugBreak; break;
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MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
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}
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}
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break;
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default:
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return svc::ResultInvalidEnumValue();
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}
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return ResultSuccess();
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}
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}
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/* ============================= 64 ABI ============================= */
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void ExitProcess64() {
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return ExitProcess();
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}
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Result GetProcessId64(uint64_t *out_process_id, ams::svc::Handle process_handle) {
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return GetProcessId(out_process_id, process_handle);
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}
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Result GetProcessList64(int32_t *out_num_processes, KUserPointer<uint64_t *> out_process_ids, int32_t max_out_count) {
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return GetProcessList(out_num_processes, out_process_ids, max_out_count);
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}
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Result CreateProcess64(ams::svc::Handle *out_handle, KUserPointer<const ams::svc::lp64::CreateProcessParameter *> parameters, KUserPointer<const uint32_t *> caps, int32_t num_caps) {
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return CreateProcess(out_handle, parameters, caps, num_caps);
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}
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Result StartProcess64(ams::svc::Handle process_handle, int32_t priority, int32_t core_id, uint64_t main_thread_stack_size) {
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return StartProcess(process_handle, priority, core_id, main_thread_stack_size);
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}
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Result TerminateProcess64(ams::svc::Handle process_handle) {
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return TerminateProcess(process_handle);
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}
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Result GetProcessInfo64(int64_t *out_info, ams::svc::Handle process_handle, ams::svc::ProcessInfoType info_type) {
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return GetProcessInfo(out_info, process_handle, info_type);
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}
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/* ============================= 64From32 ABI ============================= */
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void ExitProcess64From32() {
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return ExitProcess();
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}
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Result GetProcessId64From32(uint64_t *out_process_id, ams::svc::Handle process_handle) {
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return GetProcessId(out_process_id, process_handle);
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}
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Result GetProcessList64From32(int32_t *out_num_processes, KUserPointer<uint64_t *> out_process_ids, int32_t max_out_count) {
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return GetProcessList(out_num_processes, out_process_ids, max_out_count);
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}
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Result CreateProcess64From32(ams::svc::Handle *out_handle, KUserPointer<const ams::svc::ilp32::CreateProcessParameter *> parameters, KUserPointer<const uint32_t *> caps, int32_t num_caps) {
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return CreateProcess(out_handle, parameters, caps, num_caps);
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}
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Result StartProcess64From32(ams::svc::Handle process_handle, int32_t priority, int32_t core_id, uint64_t main_thread_stack_size) {
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return StartProcess(process_handle, priority, core_id, main_thread_stack_size);
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}
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Result TerminateProcess64From32(ams::svc::Handle process_handle) {
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return TerminateProcess(process_handle);
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}
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Result GetProcessInfo64From32(int64_t *out_info, ams::svc::Handle process_handle, ams::svc::ProcessInfoType info_type) {
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return GetProcessInfo(out_info, process_handle, info_type);
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}
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}
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