Function SysCreateInterface

Kernel/src/arch/x86_64/syscalls.cpp:2261–2296

//////////////////////// \brief SysCreateInterface (service, name, msgSize) - Create a new interface Create a new interface. Interfaces allow clients to open connections to a service \param service (handle_id_t) Handle ID of the service hosting the interface \param name (const char*) Name of the interface, \param msgSize (uint16_t) Maximum message size for all connections \return Handle ID of s

/// \return Handle ID of service on success, negative error code on failure
/////////////////////////////
long SysCreateInterface(regs64_t* r){
	process_t* currentProcess = Scheduler::GetCurrentProcess();

	Handle* svcHandle;
	if(Scheduler::FindHandle(currentProcess, SC_ARG0(r), &svcHandle)){
		Log::Warning("SysCreateInterface: Invalid handle ID %d", SC_ARG0(r));
		return -EINVAL;
	}

	if(!svcHandle->ko->IsType(Service::TypeID())){
		Log::Warning("SysCreateInterface: Invalid handle type (ID %d)", SC_ARG0(r));
		return -EINVAL;
	}

	size_t nameLength;
	if(strlenSafe(reinterpret_cast<const char*>(SC_ARG1(r)), nameLength, currentProcess->addressSpace)){
		return -EFAULT;
	}

	char name[nameLength + 1];
	strncpy(name, reinterpret_cast<const char*>(SC_ARG1(r)), nameLength);
	name[nameLength] = 0;

	Service* svc = reinterpret_cast<Service*>(svcHandle->ko.get());

	FancyRefPtr<MessageInterface> interface;
	long ret = svc->CreateInterface(interface, name, SC_ARG2(r));

	if(ret){
		return ret;
	}

	Handle& handle = Scheduler::RegisterHandle(currentProcess, static_pointer_cast<KernelObject, MessageInterface>(interface));

	return handle.id;
}

/////////////////////////////
/// \brief SysInterfaceAccept (interface) - Accept connections on an interface