// Poll(u32 nfds, u32 timeout, buffer<unknown, 0x21, 0> fds) -> (i32 ret, u32 bsd_errno, buffer<unknown, 0x22, 0>)
public ResultCode Poll(ServiceCtx context)
{
int fdsCount = context.RequestData.ReadInt32();
int timeout = context.RequestData.ReadInt32();
(long bufferPosition, long bufferSize) = context.Request.GetBufferType0x21();
if (timeout < -1 || fdsCount < 0 || (fdsCount * 8) > bufferSize)
{
return(WriteBsdResult(context, -1, LinuxError.EINVAL));
}
PollEvent[] events = new PollEvent[fdsCount];
for (int i = 0; i < fdsCount; i++)
{
int socketFd = context.Memory.ReadInt32(bufferPosition + i * 8);
BsdSocket socket = RetrieveSocket(socketFd);
if (socket == null)
{
return(WriteBsdResult(context, -1, LinuxError.EBADF));
}
PollEvent.EventTypeMask inputEvents = (PollEvent.EventTypeMask)context.Memory.ReadInt16(bufferPosition + i * 8 + 4);
PollEvent.EventTypeMask outputEvents = (PollEvent.EventTypeMask)context.Memory.ReadInt16(bufferPosition + i * 8 + 6);
events[i] = new PollEvent(socketFd, socket, inputEvents, outputEvents);
}
List <Socket> readEvents = new List <Socket>();
List <Socket> writeEvents = new List <Socket>();
List <Socket> errorEvents = new List <Socket>();
foreach (PollEvent Event in events)
{
bool isValidEvent = false;
if ((Event.InputEvents & PollEvent.EventTypeMask.Input) != 0)
{
readEvents.Add(Event.Socket.Handle);
errorEvents.Add(Event.Socket.Handle);
isValidEvent = true;
}
if ((Event.InputEvents & PollEvent.EventTypeMask.UrgentInput) != 0)
{
readEvents.Add(Event.Socket.Handle);
errorEvents.Add(Event.Socket.Handle);
isValidEvent = true;
}
if ((Event.InputEvents & PollEvent.EventTypeMask.Output) != 0)
{
writeEvents.Add(Event.Socket.Handle);
errorEvents.Add(Event.Socket.Handle);
isValidEvent = true;
}
if ((Event.InputEvents & PollEvent.EventTypeMask.Error) != 0)
{
errorEvents.Add(Event.Socket.Handle);
isValidEvent = true;
}
if (!isValidEvent)
{
Logger.PrintWarning(LogClass.ServiceBsd, $"Unsupported Poll input event type: {Event.InputEvents}");
return(WriteBsdResult(context, -1, LinuxError.EINVAL));
}
}
try
{
System.Net.Sockets.Socket.Select(readEvents, writeEvents, errorEvents, timeout);
}
catch (SocketException exception)
{
return(WriteWinSock2Error(context, (WsaError)exception.ErrorCode));
}
for (int i = 0; i < fdsCount; i++)
{
PollEvent Event = events[i];
context.Memory.WriteInt32(bufferPosition + i * 8, Event.SocketFd);
context.Memory.WriteInt16(bufferPosition + i * 8 + 4, (short)Event.InputEvents);
PollEvent.EventTypeMask outputEvents = 0;
Socket socket = Event.Socket.Handle;
if (errorEvents.Contains(socket))
{
outputEvents |= PollEvent.EventTypeMask.Error;
if (!socket.Connected || !socket.IsBound)
{
outputEvents |= PollEvent.EventTypeMask.Disconnected;
}
}
if (readEvents.Contains(socket))
{
if ((Event.InputEvents & PollEvent.EventTypeMask.Input) != 0)
{
outputEvents |= PollEvent.EventTypeMask.Input;
}
}
if (writeEvents.Contains(socket))
{
outputEvents |= PollEvent.EventTypeMask.Output;
}
context.Memory.WriteInt16(bufferPosition + i * 8 + 6, (short)outputEvents);
}
return(WriteBsdResult(context, readEvents.Count + writeEvents.Count + errorEvents.Count, LinuxError.SUCCESS));
}
// Poll(u32 nfds, u32 timeout, buffer<unknown, 0x21, 0> fds) -> (i32 ret, u32 bsd_errno, buffer<unknown, 0x22, 0>)
public long Poll(ServiceCtx Context)
{
int FdsCount = Context.RequestData.ReadInt32();
int Timeout = Context.RequestData.ReadInt32();
(long BufferPosition, long BufferSize) = Context.Request.GetBufferType0x21();
if (Timeout < -1 || FdsCount < 0 || (FdsCount * 8) > BufferSize)
{
return(WriteBsdResult(Context, -1, LinuxError.EINVAL));
}
PollEvent[] Events = new PollEvent[FdsCount];
for (int i = 0; i < FdsCount; i++)
{
int SocketFd = Context.Memory.ReadInt32(BufferPosition + i * 8);
BsdSocket Socket = RetrieveSocket(SocketFd);
if (Socket == null)
{
return(WriteBsdResult(Context, -1, LinuxError.EBADF));
}
PollEvent.EventTypeMask InputEvents = (PollEvent.EventTypeMask)Context.Memory.ReadInt16(BufferPosition + i * 8 + 4);
PollEvent.EventTypeMask OutputEvents = (PollEvent.EventTypeMask)Context.Memory.ReadInt16(BufferPosition + i * 8 + 6);
Events[i] = new PollEvent(SocketFd, Socket, InputEvents, OutputEvents);
}
List <Socket> ReadEvents = new List <Socket>();
List <Socket> WriteEvents = new List <Socket>();
List <Socket> ErrorEvents = new List <Socket>();
foreach (PollEvent Event in Events)
{
bool IsValidEvent = false;
if ((Event.InputEvents & PollEvent.EventTypeMask.Input) != 0)
{
ReadEvents.Add(Event.Socket.Handle);
ErrorEvents.Add(Event.Socket.Handle);
IsValidEvent = true;
}
if ((Event.InputEvents & PollEvent.EventTypeMask.UrgentInput) != 0)
{
ReadEvents.Add(Event.Socket.Handle);
ErrorEvents.Add(Event.Socket.Handle);
IsValidEvent = true;
}
if ((Event.InputEvents & PollEvent.EventTypeMask.Output) != 0)
{
WriteEvents.Add(Event.Socket.Handle);
ErrorEvents.Add(Event.Socket.Handle);
IsValidEvent = true;
}
if ((Event.InputEvents & PollEvent.EventTypeMask.Error) != 0)
{
ErrorEvents.Add(Event.Socket.Handle);
IsValidEvent = true;
}
if (!IsValidEvent)
{
Logger.PrintWarning(LogClass.ServiceBsd, $"Unsupported Poll input event type: {Event.InputEvents}");
return(WriteBsdResult(Context, -1, LinuxError.EINVAL));
}
}
try
{
System.Net.Sockets.Socket.Select(ReadEvents, WriteEvents, ErrorEvents, Timeout);
}
catch (SocketException Exception)
{
return(WriteWinSock2Error(Context, (WSAError)Exception.ErrorCode));
}
for (int i = 0; i < FdsCount; i++)
{
PollEvent Event = Events[i];
Context.Memory.WriteInt32(BufferPosition + i * 8, Event.SocketFd);
Context.Memory.WriteInt16(BufferPosition + i * 8 + 4, (short)Event.InputEvents);
PollEvent.EventTypeMask OutputEvents = 0;
Socket Socket = Event.Socket.Handle;
if (ErrorEvents.Contains(Socket))
{
OutputEvents |= PollEvent.EventTypeMask.Error;
if (!Socket.Connected || !Socket.IsBound)
{
OutputEvents |= PollEvent.EventTypeMask.Disconnected;
}
}
if (ReadEvents.Contains(Socket))
{
if ((Event.InputEvents & PollEvent.EventTypeMask.Input) != 0)
{
OutputEvents |= PollEvent.EventTypeMask.Input;
}
}
if (WriteEvents.Contains(Socket))
{
OutputEvents |= PollEvent.EventTypeMask.Output;
}
Context.Memory.WriteInt16(BufferPosition + i * 8 + 6, (short)OutputEvents);
}
return(WriteBsdResult(Context, ReadEvents.Count + WriteEvents.Count + ErrorEvents.Count, LinuxError.SUCCESS));
}