IPC/HLE: Associate the ClientSessions with their parent port's HLE interface if it exists.

Pass the triggering ServerSession to the HLE command handler to differentiate which session caused the request.

src/core/hle/kernel/client_port.cpp

@@ -14,7 +14,7 @@ namespace Kernel {
 ClientPort::ClientPort() {}
 ClientPort::~ClientPort() {}
 
-Kernel::SharedPtr<ClientPort> ClientPort::CreateForHLE(u32 max_sessions, std::unique_ptr<Service::Interface> hle_interface) {
+Kernel::SharedPtr<ClientPort> ClientPort::CreateForHLE(u32 max_sessions, std::shared_ptr<Service::Interface> hle_interface) {
     SharedPtr<ClientPort> client_port(new ClientPort);
     client_port->max_sessions = max_sessions;
     client_port->active_sessions = 0;
@@ -34,12 +34,4 @@ void ClientPort::AddWaitingSession(SharedPtr<ServerSession> server_session) {
     server_port->WakeupAllWaitingThreads();
 }
 
-ResultCode ClientPort::HandleSyncRequest() {
-    // Forward the request to the associated HLE interface if it exists
-    if (hle_interface != nullptr)
-        return hle_interface->HandleSyncRequest();
-
-    return RESULT_SUCCESS;
-}
-
 } // namespace

src/core/hle/kernel/client_port.h

@@ -28,19 +28,13 @@ public:
      * @param hle_interface Interface object that implements the commands of the service.
      * @returns ClientPort for the given HLE interface.
      */
-    static Kernel::SharedPtr<ClientPort> CreateForHLE(u32 max_sessions, std::unique_ptr<Service::Interface> hle_interface);
+    static Kernel::SharedPtr<ClientPort> CreateForHLE(u32 max_sessions, std::shared_ptr<Service::Interface> hle_interface);
 
     /**
      * Adds the specified server session to the queue of pending sessions of the associated ServerPort
      * @param server_session Server session to add to the queue
      */
-    virtual void AddWaitingSession(SharedPtr<ServerSession> server_session);
-
-    /**
-     * Handle a sync request from the emulated application.
-     * @returns ResultCode from the operation.
-     */
-    ResultCode HandleSyncRequest();
+    void AddWaitingSession(SharedPtr<ServerSession> server_session);
 
     std::string GetTypeName() const override { return "ClientPort"; }
     std::string GetName() const override { return name; }
@@ -54,7 +48,7 @@ public:
     u32 max_sessions;                                            ///< Maximum number of simultaneous sessions the port can have
     u32 active_sessions;                                         ///< Number of currently open sessions to this port
     std::string name;                                            ///< Name of client port (optional)
-    std::unique_ptr<Service::Interface> hle_interface = nullptr; ///< HLE implementation of this port's request handler
+    std::shared_ptr<Service::Interface> hle_interface = nullptr; ///< HLE implementation of this port's request handler
 
 private:
     ClientPort();

src/core/hle/kernel/client_session.cpp

@@ -8,6 +8,7 @@
 #include "core/hle/kernel/client_session.h"
 #include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/kernel.h"
+#include "core/hle/service/service.h"
 
 namespace Kernel {
 
@@ -20,6 +21,7 @@ ResultVal<SharedPtr<ClientSession>> ClientSession::Create(SharedPtr<ServerSessio
     client_session->name = std::move(name);
     client_session->server_session = server_session;
     client_session->client_port = client_port;
+    client_session->hle_helper = client_port->hle_interface;
 
     return MakeResult<SharedPtr<ClientSession>>(std::move(client_session));
 }
@@ -31,10 +33,9 @@ ResultCode ClientSession::HandleSyncRequest() {
     if (result.IsError())
         return result;
 
-    // Tell the client port to handle the request in case it's an HLE service.
-    // The client port can be nullptr for port-less sessions (Like for example File and Directory sessions).
-    if (client_port != nullptr)
-        result = client_port->HandleSyncRequest();
+    // If this ClientSession has an associated HLE helper, forward the request to it.
+    if (hle_helper != nullptr)
+        result = hle_helper->HandleSyncRequest(server_session);
 
     return result;
 }

src/core/hle/kernel/client_session.h

@@ -5,11 +5,16 @@
 #pragma once
 
 #include <string>
+#include <memory>
 
 #include "common/common_types.h"
 
 #include "core/hle/kernel/kernel.h"
 
+namespace Service {
+class Interface;
+}
+
 namespace Kernel {
 
 class ClientPort;
@@ -41,6 +46,7 @@ public:
     std::string name;                           ///< Name of client port (optional)
     SharedPtr<ServerSession> server_session;    ///< The server session associated with this client session.
     SharedPtr<ClientPort> client_port;          ///< The client port which this session is connected to.
+    std::shared_ptr<Service::Interface> hle_helper = nullptr; ///< HLE implementation of this port's request handler
 
 private:
     ClientSession();

src/core/hle/service/service.cpp

@@ -61,7 +61,9 @@ static std::string MakeFunctionString(const char* name, const char* port_name,
     return function_string;
 }
 
-ResultCode Interface::HandleSyncRequest() {
+ResultCode Interface::HandleSyncRequest(Kernel::SharedPtr<Kernel::ServerSession> server_session) {
+    // TODO(Subv): Make use of the server_session in the HLE service handlers to distinguish which session triggered each command.
+
     u32* cmd_buff = Kernel::GetCommandBuffer();
     auto itr = m_functions.find(cmd_buff[0]);
 
@@ -97,12 +99,12 @@ void Interface::Register(const FunctionInfo* functions, size_t n) {
 // Module interface
 
 static void AddNamedPort(Interface* interface_) {
-    auto client_port = Kernel::ClientPort::CreateForHLE(interface_->GetMaxSessions(), std::unique_ptr<Interface>(interface_));
+    auto client_port = Kernel::ClientPort::CreateForHLE(interface_->GetMaxSessions(), std::shared_ptr<Interface>(interface_));
     g_kernel_named_ports.emplace(interface_->GetPortName(), client_port);
 }
 
 void AddService(Interface* interface_) {
-    auto client_port = Kernel::ClientPort::CreateForHLE(interface_->GetMaxSessions(), std::unique_ptr<Interface>(interface_));
+    auto client_port = Kernel::ClientPort::CreateForHLE(interface_->GetMaxSessions(), std::shared_ptr<Interface>(interface_));
     g_srv_services.emplace(interface_->GetPortName(), client_port);
 }
 

src/core/hle/service/service.h

@@ -56,7 +56,7 @@ public:
         return "[UNKNOWN SERVICE PORT]";
     }
 
-    ResultCode HandleSyncRequest();
+    ResultCode HandleSyncRequest(Kernel::SharedPtr<Kernel::ServerSession> server_session);
 
 protected:
     /**