Function SysEndpointInfo

Kernel/src/arch/x86_64/syscalls.cpp:2508–2532

//////////////////////// \brief SysEndpointInfo (endpoint, info) Get endpoint information \param endpoint Endpoint handle \param info Pointer to endpoint info struct \return 0 on success, negative error code on failure ////////////////////////

/// \return 0 on success, negative error code on failure
/////////////////////////////
long SysEndpointInfo(regs64_t* r){
	process_t* currentProcess = Scheduler::GetCurrentProcess();

	MessageEndpointInfo* info = reinterpret_cast<MessageEndpointInfo*>(SC_ARG1(r));

	if(!Memory::CheckUsermodePointer(SC_ARG1(r), sizeof(MessageEndpointInfo), currentProcess->addressSpace)){
		return -EFAULT; // Data greater than 8 and invalid pointer
	}

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

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

	MessageEndpoint* endpoint = reinterpret_cast<MessageEndpoint*>(endpHandle->ko.get());

	*info = { .msgSize = endpoint->GetMaxMessageSize() };
	return 0;
}

/////////////////////////////
/// \brief SysKernelObjectWaitOne (object)