} // class SocketStream
// Create a new socket.
public static int __syscall_socket(int domain, int type)
{
AddressFamily family;
SocketType socketType;
ProtocolType protocol;
// Convert the parametrs into their C# equivalents.
if (domain == 2 /*AF_INET*/)
{
family = AddressFamily.InterNetwork;
}
else if (domain == 10 /*AF_INET6*/)
{
family = AddressFamily.InterNetworkV6;
}
else
{
return(-22); /* EINVAL */
}
if (type == 1 /*SOCK_STREAM*/)
{
socketType = SocketType.Stream;
protocol = ProtocolType.Tcp;
}
else if (type == 2 /*SOCK_DGRAM*/)
{
socketType = SocketType.Dgram;
protocol = ProtocolType.Udp;
}
else
{
return(-22); /* EINVAL */
}
// Create the socket.
Socket socket;
try
{
socket = new Socket(family, socketType, protocol);
}
catch (SocketException)
{
return(-22); /* EINVAL */
}
// Wrap the socket within a stream.
Stream stream = new SocketStream(socket);
// Associate the stream with a file descriptor.
int fd = FileTable.AllocFD();
if (fd == -1)
{
stream.Close();
return(fd);
}
FileTable.SetFileDescriptor(fd, stream);
return(fd);
}
// Open a file descriptor, based on a file.
public static int __syscall_open(IntPtr path, int mode, int access)
{
int fd;
Stream stream = null;
// Reserve a slot in the file descriptor table.
fd = FileTable.AllocFD();
if (fd == -1)
{
return(-24); /* EMFILE */
}
// Open the file stream.
try
{
String name = Marshal.PtrToStringAnsi(path);
stream = new FileStream
(name, (FileMode)mode, (FileAccess)access);
}
catch (SecurityException)
{
return(-13); /* EACCES */
}
catch (FileNotFoundException)
{
return(-2); /* ENOENT */
}
catch (DirectoryNotFoundException)
{
return(-20); /* ENOTDIR */
}
catch (PathTooLongException)
{
return(-36); /* ENAMETOOLONG */
}
catch (UnauthorizedAccessException)
{
return(-13); /* EACCES */
}
catch (IOException)
{
// Could be anything, but EEXIST is most likely.
return(-17); /* EEXIST */
}
finally
{
if (stream == null)
{
FileTable.ReleaseFD(fd);
}
}
// Assign the stream to the "fd" slot in the file
// descriptor table.
FileTable.SetFileDescriptor(fd, stream);
return(fd);
}
// Wrap a socket that was just accepted with a file descriptor.
public static int __syscall_wrap_accept(Socket socket)
{
// Wrap the socket within a stream.
SocketStream stream = new SocketStream(socket);
stream.Connected = true;
// Associate the stream with a file descriptor.
int fd = FileTable.AllocFD();
if (fd == -1)
{
stream.Close();
return(fd);
}
FileTable.SetFileDescriptor(fd, stream);
return(fd);
}
