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https://github.com/Atmosphere-NX/Atmosphere.git
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96f95b9f95
* result: try out some experimental shenanigans * result: sketch out some more shenanigans * result: see what it looks like to convert kernel to use result conds instead of guards * make rest of kernel use experimental new macro-ing
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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R_SUCCEED();
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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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R_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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R_THROW(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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R_THROW(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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R_SUCCEED();
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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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R_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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R_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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R_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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R_SUCCEED();
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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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R_THROW(svc::ResultInvalidEnumValue());
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}
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R_SUCCEED();
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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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R_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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R_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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R_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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R_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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R_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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R_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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R_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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R_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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R_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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R_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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|
R_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) {
|
|
R_RETURN(GetProcessInfo(out_info, process_handle, info_type));
|
|
}
|
|
|
|
}
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