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hle: kernel: Implement CloneCurrentObject and improve session management.

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This commit is contained in:
bunnei 2021-05-15 23:49:03 -07:00
parent c40e7593f5
commit 7361eac10f
13 changed files with 184 additions and 99 deletions
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23
src/core/hle/ipc_helpers.h
View file

@ -86,10 +86,8 @@ public:
// The entire size of the raw data section in u32 units, including the 16 bytes of mandatory
// padding.
u32 raw_data_size = ctx.IsTipc()
? normal_params_size - 1
: sizeof(IPC::DataPayloadHeader) / 4 + 4 + normal_params_size;
u32 raw_data_size = ctx.write_size =
ctx.IsTipc() ? normal_params_size - 1 : normal_params_size;
u32 num_handles_to_move{};
u32 num_domain_objects{};
const bool always_move_handles{
@ -101,16 +99,20 @@ public:
}
if (ctx.Session()->IsDomain()) {
raw_data_size += static_cast<u32>(sizeof(DomainMessageHeader) / 4 + num_domain_objects);
raw_data_size +=
static_cast<u32>(sizeof(DomainMessageHeader) / sizeof(u32) + num_domain_objects);
ctx.write_size += num_domain_objects;
}
if (ctx.IsTipc()) {
header.type.Assign(ctx.GetCommandType());
} else {
raw_data_size += static_cast<u32>(sizeof(IPC::DataPayloadHeader) / sizeof(u32) + 4 +
normal_params_size);
}
ctx.data_size = static_cast<u32>(raw_data_size);
header.data_size.Assign(static_cast<u32>(raw_data_size));
if (num_handles_to_copy != 0 || num_handles_to_move != 0) {
header.data_size.Assign(raw_data_size);
if (num_handles_to_copy || num_handles_to_move) {
header.enable_handle_descriptor.Assign(1);
}
PushRaw(header);
@ -143,7 +145,8 @@ public:
data_payload_index = index;
ctx.data_payload_offset = index;
ctx.domain_offset = index + raw_data_size / 4;
ctx.write_size += index;
ctx.domain_offset = static_cast<u32>(index + raw_data_size / sizeof(u32));
}
template <class T>
@ -404,7 +407,7 @@ public:
std::shared_ptr<T> PopIpcInterface() {
ASSERT(context->Session()->IsDomain());
ASSERT(context->GetDomainMessageHeader().input_object_count > 0);
return context->GetDomainRequestHandler<T>(Pop<u32>() - 1);
return context->GetDomainHandler<T>(Pop<u32>() - 1);
}
};

20
src/core/hle/kernel/hle_ipc.cpp
View file

@ -35,11 +35,11 @@ SessionRequestHandler::SessionRequestHandler() = default;
SessionRequestHandler::~SessionRequestHandler() = default;
void SessionRequestHandler::ClientConnected(KServerSession* session) {
session->SetHleHandler(shared_from_this());
session->SetSessionHandler(shared_from_this());
}
void SessionRequestHandler::ClientDisconnected(KServerSession* session) {
session->SetHleHandler(nullptr);
session->SetSessionHandler(nullptr);
}
HLERequestContext::HLERequestContext(KernelCore& kernel_, Core::Memory::Memory& memory_,
@ -186,18 +186,6 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(KThread& requesting_t
auto& owner_process = *requesting_thread.GetOwnerProcess();
auto& handle_table = owner_process.GetHandleTable();
// The data_size already includes the payload header, the padding and the domain header.
std::size_t size{};
if (IsTipc()) {
size = cmd_buf.size();
} else {
size = data_payload_offset + data_size - sizeof(IPC::DataPayloadHeader) / sizeof(u32) - 4;
if (Session()->IsDomain()) {
size -= sizeof(IPC::DomainMessageHeader) / sizeof(u32);
}
}
for (auto& object : copy_objects) {
Handle handle{};
if (object) {
@ -222,7 +210,7 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(KThread& requesting_t
if (Session()->IsDomain()) {
current_offset = domain_offset - static_cast<u32>(domain_objects.size());
for (const auto& object : domain_objects) {
server_session->AppendDomainRequestHandler(object);
server_session->AppendDomainHandler(object);
cmd_buf[current_offset++] =
static_cast<u32_le>(server_session->NumDomainRequestHandlers());
}
@ -230,7 +218,7 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(KThread& requesting_t
// Copy the translated command buffer back into the thread's command buffer area.
memory.WriteBlock(owner_process, requesting_thread.GetTLSAddress(), cmd_buf.data(),
size * sizeof(u32));
write_size * sizeof(u32));
return RESULT_SUCCESS;
}

82
src/core/hle/kernel/hle_ipc.h
View file

@ -12,6 +12,8 @@
#include <type_traits>
#include <vector>
#include <boost/container/small_vector.hpp>
#include "common/assert.h"
#include "common/common_types.h"
#include "common/concepts.h"
#include "common/swap.h"
@ -84,6 +86,69 @@ public:
void ClientDisconnected(KServerSession* session);
};
using SessionRequestHandlerPtr = std::shared_ptr<SessionRequestHandler>;
/**
* Manages the underlying HLE requests for a session, and whether (or not) the session should be
* treated as a domain. This is managed separately from server sessions, as this state is shared
* when objects are cloned.
*/
class SessionRequestManager final {
public:
SessionRequestManager() = default;
bool IsDomain() const {
return is_domain;
}
void ConvertToDomain() {
domain_handlers = {session_handler};
is_domain = true;
}
std::size_t DomainHandlerCount() const {
return domain_handlers.size();
}
bool HasSessionHandler() const {
return session_handler != nullptr;
}
SessionRequestHandler& SessionHandler() {
return *session_handler;
}
const SessionRequestHandler& SessionHandler() const {
return *session_handler;
}
void CloseDomainHandler(std::size_t index) {
if (index < DomainHandlerCount()) {
domain_handlers[index] = nullptr;
} else {
UNREACHABLE_MSG("Unexpected handler index {}", index);
}
}
SessionRequestHandlerPtr DomainHandler(std::size_t index) const {
ASSERT_MSG(index < DomainHandlerCount(), "Unexpected handler index {}", index);
return domain_handlers.at(index);
}
void AppendDomainHandler(SessionRequestHandlerPtr&& handler) {
domain_handlers.emplace_back(std::move(handler));
}
void SetSessionHandler(SessionRequestHandlerPtr&& handler) {
session_handler = std::move(handler);
}
private:
bool is_domain{};
SessionRequestHandlerPtr session_handler;
std::vector<SessionRequestHandlerPtr> domain_handlers;
};
/**
* Class containing information about an in-flight IPC request being handled by an HLE service
* implementation. Services should avoid using old global APIs (e.g. Kernel::GetCommandBuffer()) and
@ -239,18 +304,17 @@ public:
copy_objects.emplace_back(object);
}
void AddDomainObject(std::shared_ptr<SessionRequestHandler> object) {
void AddDomainObject(SessionRequestHandlerPtr object) {
domain_objects.emplace_back(std::move(object));
}
template <typename T>
std::shared_ptr<T> GetDomainRequestHandler(std::size_t index) const {
return std::static_pointer_cast<T>(domain_request_handlers.at(index));
std::shared_ptr<T> GetDomainHandler(std::size_t index) const {
return std::static_pointer_cast<T>(manager->DomainHandler(index));
}
void SetDomainRequestHandlers(
const std::vector<std::shared_ptr<SessionRequestHandler>>& handlers) {
domain_request_handlers = handlers;
void SetSessionRequestManager(std::shared_ptr<SessionRequestManager> manager_) {
manager = std::move(manager_);
}
/// Clears the list of objects so that no lingering objects are written accidentally to the
@ -297,7 +361,7 @@ private:
boost::container::small_vector<Handle, 8> copy_handles;
boost::container::small_vector<KAutoObject*, 8> move_objects;
boost::container::small_vector<KAutoObject*, 8> copy_objects;
boost::container::small_vector<std::shared_ptr<SessionRequestHandler>, 8> domain_objects;
boost::container::small_vector<SessionRequestHandlerPtr, 8> domain_objects;
std::optional<IPC::CommandHeader> command_header;
std::optional<IPC::HandleDescriptorHeader> handle_descriptor_header;
@ -311,12 +375,12 @@ private:
u32_le command{};
u64 pid{};
u32 write_size{};
u32 data_payload_offset{};
u32 handles_offset{};
u32 domain_offset{};
u32 data_size{};
std::vector<std::shared_ptr<SessionRequestHandler>> domain_request_handlers;
std::shared_ptr<SessionRequestManager> manager;
bool is_thread_waiting{};
KernelCore& kernel;

3
src/core/hle/kernel/k_client_port.h
View file

@ -31,6 +31,9 @@ public:
const KPort* GetParent() const {
return parent;
}
KPort* GetParent() {
return parent;
}
s32 GetNumSessions() const {
return num_sessions;

7
src/core/hle/kernel/k_port.cpp
View file

@ -56,11 +56,8 @@ ResultCode KPort::EnqueueSession(KServerSession* session) {
R_UNLESS(state == State::Normal, ResultPortClosed);
if (server.HasHLEHandler()) {
server.GetHLEHandler()->ClientConnected(session);
} else {
server.EnqueueSession(session);
}
server.GetSessionRequestHandler()->ClientConnected(session);
server.EnqueueSession(session);
return RESULT_SUCCESS;
}

16
src/core/hle/kernel/k_server_port.h
View file

@ -32,26 +32,24 @@ public:
explicit KServerPort(KernelCore& kernel_);
virtual ~KServerPort() override;
using HLEHandler = std::shared_ptr<SessionRequestHandler>;
void Initialize(KPort* parent_, std::string&& name_);
/// Whether or not this server port has an HLE handler available.
bool HasHLEHandler() const {
return hle_handler != nullptr;
bool HasSessionRequestHandler() const {
return session_handler != nullptr;
}
/// Gets the HLE handler for this port.
HLEHandler GetHLEHandler() const {
return hle_handler;
SessionRequestHandlerPtr GetSessionRequestHandler() const {
return session_handler;
}
/**
* Sets the HLE handler template for the port. ServerSessions crated by connecting to this port
* will inherit a reference to this handler.
*/
void SetHleHandler(HLEHandler hle_handler_) {
hle_handler = std::move(hle_handler_);
void SetSessionHandler(SessionRequestHandlerPtr&& handler) {
session_handler = std::move(handler);
}
void EnqueueSession(KServerSession* pending_session);
@ -73,7 +71,7 @@ private:
private:
SessionList session_list;
HLEHandler hle_handler;
SessionRequestHandlerPtr session_handler;
KPort* parent{};
};

35
src/core/hle/kernel/k_server_session.cpp
View file

@ -23,7 +23,8 @@
namespace Kernel {
KServerSession::KServerSession(KernelCore& kernel_) : KSynchronizationObject{kernel_} {}
KServerSession::KServerSession(KernelCore& kernel_)
: KSynchronizationObject{kernel_}, manager{std::make_shared<SessionRequestManager>()} {}
KServerSession::~KServerSession() {
kernel.ReleaseServiceThread(service_thread);
@ -43,14 +44,8 @@ void KServerSession::Destroy() {
}
void KServerSession::OnClientClosed() {
// We keep a shared pointer to the hle handler to keep it alive throughout
// the call to ClientDisconnected, as ClientDisconnected invalidates the
// hle_handler member itself during the course of the function executing.
std::shared_ptr<SessionRequestHandler> handler = hle_handler;
if (handler) {
// Note that after this returns, this server session's hle_handler is
// invalidated (set to null).
handler->ClientDisconnected(this);
if (manager->HasSessionHandler()) {
manager->SessionHandler().ClientDisconnected(this);
}
}
@ -66,12 +61,12 @@ bool KServerSession::IsSignaled() const {
return false;
}
void KServerSession::AppendDomainRequestHandler(std::shared_ptr<SessionRequestHandler> handler) {
domain_request_handlers.push_back(std::move(handler));
void KServerSession::AppendDomainHandler(SessionRequestHandlerPtr handler) {
manager->AppendDomainHandler(std::move(handler));
}
std::size_t KServerSession::NumDomainRequestHandlers() const {
return domain_request_handlers.size();
return manager->DomainHandlerCount();
}
ResultCode KServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& context) {
@ -80,14 +75,14 @@ ResultCode KServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& co
}
// Set domain handlers in HLE context, used for domain objects (IPC interfaces) as inputs
context.SetDomainRequestHandlers(domain_request_handlers);
context.SetSessionRequestManager(manager);
// If there is a DomainMessageHeader, then this is CommandType "Request"
const auto& domain_message_header = context.GetDomainMessageHeader();
const u32 object_id{domain_message_header.object_id};
switch (domain_message_header.command) {
case IPC::DomainMessageHeader::CommandType::SendMessage:
if (object_id > domain_request_handlers.size()) {
if (object_id > manager->DomainHandlerCount()) {
LOG_CRITICAL(IPC,
"object_id {} is too big! This probably means a recent service call "
"to {} needed to return a new interface!",
@ -95,12 +90,12 @@ ResultCode KServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& co
UNREACHABLE();
return RESULT_SUCCESS; // Ignore error if asserts are off
}
return domain_request_handlers[object_id - 1]->HandleSyncRequest(*this, context);
return manager->DomainHandler(object_id - 1)->HandleSyncRequest(*this, context);
case IPC::DomainMessageHeader::CommandType::CloseVirtualHandle: {
LOG_DEBUG(IPC, "CloseVirtualHandle, object_id=0x{:08X}", object_id);
domain_request_handlers[object_id - 1] = nullptr;
manager->CloseDomainHandler(object_id - 1);
IPC::ResponseBuilder rb{context, 2};
rb.Push(RESULT_SUCCESS);
@ -133,14 +128,14 @@ ResultCode KServerSession::CompleteSyncRequest(HLERequestContext& context) {
if (IsDomain() && context.HasDomainMessageHeader()) {
result = HandleDomainSyncRequest(context);
// If there is no domain header, the regular session handler is used
} else if (hle_handler != nullptr) {
} else if (manager->HasSessionHandler()) {
// If this ServerSession has an associated HLE handler, forward the request to it.
result = hle_handler->HandleSyncRequest(*this, context);
result = manager->SessionHandler().HandleSyncRequest(*this, context);
}
if (convert_to_domain) {
ASSERT_MSG(IsSession(), "ServerSession is already a domain instance.");
domain_request_handlers = {hle_handler};
ASSERT_MSG(!IsDomain(), "ServerSession is already a domain instance.");
manager->ConvertToDomain();
convert_to_domain = false;
}

36
src/core/hle/kernel/k_server_session.h
View file

@ -12,6 +12,7 @@
#include <boost/intrusive/list.hpp>
#include "common/threadsafe_queue.h"
#include "core/hle/kernel/hle_ipc.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/kernel/service_thread.h"
#include "core/hle/result.h"
@ -64,8 +65,8 @@ public:
* instead of the regular IPC machinery. (The regular IPC machinery is currently not
* implemented.)
*/
void SetHleHandler(std::shared_ptr<SessionRequestHandler> hle_handler_) {
hle_handler = std::move(hle_handler_);
void SetSessionHandler(SessionRequestHandlerPtr handler) {
manager->SetSessionHandler(std::move(handler));
}
/**
@ -82,7 +83,7 @@ public:
/// Adds a new domain request handler to the collection of request handlers within
/// this ServerSession instance.
void AppendDomainRequestHandler(std::shared_ptr<SessionRequestHandler> handler);
void AppendDomainHandler(SessionRequestHandlerPtr handler);
/// Retrieves the total number of domain request handlers that have been
/// appended to this ServerSession instance.
@ -90,12 +91,7 @@ public:
/// Returns true if the session has been converted to a domain, otherwise False
bool IsDomain() const {
return !IsSession();
}
/// Returns true if this session has not been converted to a domain, otherwise false.
bool IsSession() const {
return domain_request_handlers.empty();
return manager->IsDomain();
}
/// Converts the session to a domain at the end of the current command
@ -103,6 +99,21 @@ public:
convert_to_domain = true;
}
/// Gets the session request manager, which forwards requests to the underlying service
std::shared_ptr<SessionRequestManager>& GetSessionRequestManager() {
return manager;
}
/// Gets the session request manager, which forwards requests to the underlying service
const std::shared_ptr<SessionRequestManager>& GetSessionRequestManager() const {
return manager;
}
/// Sets the session request manager, which forwards requests to the underlying service
void SetSessionRequestManager(std::shared_ptr<SessionRequestManager> manager_) {
manager = std::move(manager_);
}
private:
/// Queues a sync request from the emulated application.
ResultCode QueueSyncRequest(KThread* thread, Core::Memory::Memory& memory);
@ -114,11 +125,8 @@ private:
/// object handle.
ResultCode HandleDomainSyncRequest(Kernel::HLERequestContext& context);
/// This session's HLE request handler (applicable when not a domain)
std::shared_ptr<SessionRequestHandler> hle_handler;
/// This is the list of domain request handlers (after conversion to a domain)
std::vector<std::shared_ptr<SessionRequestHandler>> domain_request_handlers;
/// This session's HLE request handlers
std::shared_ptr<SessionRequestManager> manager;
/// When set to True, converts the session to a domain at the end of the command
bool convert_to_domain{};

4
src/core/hle/kernel/k_session.h
View file

@ -66,6 +66,10 @@ public:
return port;
}
KClientPort* GetParent() {
return port;
}
private:
enum class State : u8 {
Invalid = 0,

4
src/core/hle/service/service.cpp
View file

@ -107,7 +107,7 @@ void ServiceFrameworkBase::InstallAsService(SM::ServiceManager& service_manager)
ASSERT(!port_installed);
auto port = service_manager.RegisterService(service_name, max_sessions).Unwrap();
port->SetHleHandler(shared_from_this());
port->SetSessionHandler(shared_from_this());
port_installed = true;
}
@ -118,7 +118,7 @@ Kernel::KClientPort& ServiceFrameworkBase::CreatePort(Kernel::KernelCore& kernel
auto* port = Kernel::KPort::Create(kernel);
port->Initialize(max_sessions, false, service_name);
port->GetServerPort().SetHleHandler(shared_from_this());
port->GetServerPort().SetSessionHandler(shared_from_this());
port_installed = true;

39
src/core/hle/service/sm/controller.cpp
View file

@ -4,8 +4,13 @@
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/k_client_port.h"
#include "core/hle/kernel/k_client_session.h"
#include "core/hle/kernel/k_port.h"
#include "core/hle/kernel/k_scoped_resource_reservation.h"
#include "core/hle/kernel/k_server_port.h"
#include "core/hle/kernel/k_server_session.h"
#include "core/hle/kernel/k_session.h"
#include "core/hle/service/sm/controller.h"
@ -13,7 +18,7 @@
namespace Service::SM {
void Controller::ConvertCurrentObjectToDomain(Kernel::HLERequestContext& ctx) {
ASSERT_MSG(ctx.Session()->IsSession(), "Session is already a domain");
ASSERT_MSG(!ctx.Session()->IsDomain(), "Session is already a domain");
LOG_DEBUG(Service, "called, server_session={}", ctx.Session()->GetId());
ctx.Session()->ConvertToDomain();
@ -29,16 +34,36 @@ void Controller::CloneCurrentObject(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service, "called");
auto session = ctx.Session()->GetParent();
auto& kernel = system.Kernel();
auto* session = ctx.Session()->GetParent();
auto* port = session->GetParent()->GetParent();
// Open a reference to the session to simulate a new one being created.
session->Open();
session->GetClientSession().Open();
session->GetServerSession().Open();
// Reserve a new session from the process resource limit.
Kernel::KScopedResourceReservation session_reservation(
kernel.CurrentProcess()->GetResourceLimit(), Kernel::LimitableResource::Sessions);
if (!session_reservation.Succeeded()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(Kernel::ResultLimitReached);
}
// Create a new session.
auto* clone = Kernel::KSession::Create(kernel);
clone->Initialize(&port->GetClientPort(), session->GetName());
// Commit the session reservation.
session_reservation.Commit();
// Enqueue the session with the named port.
port->EnqueueSession(&clone->GetServerSession());
// Set the session request manager.
clone->GetServerSession().SetSessionRequestManager(
session->GetServerSession().GetSessionRequestManager());
// We succeeded.
IPC::ResponseBuilder rb{ctx, 2, 0, 1, IPC::ResponseBuilder::Flags::AlwaysMoveHandles};
rb.Push(RESULT_SUCCESS);
rb.PushMoveObjects(session->GetClientSession());
rb.PushMoveObjects(clone->GetClientSession());
}
void Controller::CloneCurrentObjectEx(Kernel::HLERequestContext& ctx) {

12
src/core/hle/service/sm/sm.cpp
View file

@ -150,31 +150,31 @@ ResultVal<Kernel::KClientSession*> SM::GetServiceImpl(Kernel::HLERequestContext&
IPC::RequestParser rp{ctx};
std::string name(PopServiceName(rp));
// Find the named port.
auto result = service_manager.GetServicePort(name);
if (result.Failed()) {
LOG_ERROR(Service_SM, "called service={} -> error 0x{:08X}", name, result.Code().raw);
return result.Code();
}
auto* port = result.Unwrap();
// Reserve a new session from the process resource limit.
Kernel::KScopedResourceReservation session_reservation(
kernel.CurrentProcess()->GetResourceLimit(), Kernel::LimitableResource::Sessions);
R_UNLESS(session_reservation.Succeeded(), Kernel::ResultLimitReached);
// Create a new session.
auto* session = Kernel::KSession::Create(kernel);
session->Initialize(&port->GetClientPort(), std::move(name));
// Commit the session reservation.
session_reservation.Commit();
if (port->GetServerPort().GetHLEHandler()) {
port->GetServerPort().GetHLEHandler()->ClientConnected(&session->GetServerSession());
} else {
port->EnqueueSession(&session->GetServerSession());
}
// Enqueue the session with the named port.
port->EnqueueSession(&session->GetServerSession());
LOG_DEBUG(Service_SM, "called service={} -> session={}", name, session->GetId());
return MakeResult(&session->GetClientSession());
}

2
src/core/hle/service/sm/sm.h
View file

@ -73,7 +73,7 @@ public:
if (port == nullptr) {
return nullptr;
}
return std::static_pointer_cast<T>(port->GetServerPort().GetHLEHandler());
return std::static_pointer_cast<T>(port->GetServerPort().GetSessionRequestHandler());
}
void InvokeControlRequest(Kernel::HLERequestContext& context);