// Get the address family for a socket file descriptor.
// Returns a negative errno code if not a socket.
public static int __syscall_socket_family(int fd)
{
Stream stream = FileTable.GetStream(fd);
if (stream == null)
{
return(-9); /* EBADF */
}
SocketStream sstream = (stream as SocketStream);
if (sstream == null)
{
return(-88); /* ENOTSOCK */
}
AddressFamily family = sstream.Socket.AddressFamily;
if (family == AddressFamily.InterNetwork)
{
return(2); /* AF_INET */
}
else if (family == AddressFamily.InterNetworkV6)
{
return(10); /* AF_INET6 */
}
else
{
return(-22); /* EINVAL */
}
}
// Set the connected state on a socket.
public static void __syscall_set_connected(int fd, int value)
{
Stream stream = FileTable.GetStream(fd);
if (stream is SocketStream)
{
((SocketStream)stream).Connected = (value != 0);
}
}
// Set the listening state on a socket.
public static void __syscall_set_listening(int fd, int value)
{
Stream stream = FileTable.GetStream(fd);
if (stream is SocketStream)
{
((SocketStream)stream).Listening = (value != 0);
}
}
// Determine if a socket has been marked as connected.
public static int __syscall_is_connected(int fd)
{
Stream stream = FileTable.GetStream(fd);
if (stream is SocketStream)
{
return(((SocketStream)stream).Connected ? 1 : 0);
}
else
{
return(0);
}
}
// Determine if a socket has been marked for listening.
public static int __syscall_is_listening(int fd)
{
Stream stream = FileTable.GetStream(fd);
if (stream is SocketStream)
{
return(((SocketStream)stream).Listening ? 1 : 0);
}
else
{
return(0);
}
}
// Determine if a file descriptor is non-blocking.
public static int __syscall_is_nonblocking(int fd)
{
Stream stream = FileTable.GetStream(fd);
if (stream is IFDOperations)
{
return(((IFDOperations)stream).NonBlocking ? 1 : 0);
}
else
{
return(0);
}
}
// Set the non-blocking state for a file descriptor.
public static void __syscall_set_nonblocking(int fd, int value)
{
Stream stream = FileTable.GetStream(fd);
if (stream is IFDOperations)
{
((IFDOperations)stream).NonBlocking =
(value != 0 ? true : false);
}
else
{
throw new NotSupportedException();
}
}
// Get a native operating system file descriptor.
public static int __syscall_native_fd(int fd)
{
Stream stream = FileTable.GetStream(fd);
if (stream is IFDOperations)
{
return(((IFDOperations)stream).NativeFd);
}
else if (stream is FileStream)
{
return((int)(((FileStream)stream).Handle));
}
else
{
return(-1);
}
}
// Get a "select" operating system file descriptor.
public static int __syscall_select_fd(int fd)
{
Stream stream = FileTable.GetStream(fd);
if (stream is IFDOperations)
{
return(((IFDOperations)stream).SelectFd);
}
else if (stream is FileStream &&
Environment.OSVersion.Platform == (PlatformID)128)
{
// We only allow FileStream selects on Unix systems.
return((int)(((FileStream)stream).Handle));
}
else
{
return(-1);
}
}
// Get the socket object for a file descriptor. Returns null
// if an error occurred (which is written to "errno").
public unsafe static Socket __syscall_get_socket(int fd, int *errno)
{
Stream stream = FileTable.GetStream(fd);
if (stream == null)
{
*errno = 9; /* EBADF */
return(null);
}
SocketStream sstream = (stream as SocketStream);
if (sstream != null)
{
return(sstream.Socket);
}
else
{
*errno = 88; /* ENOTSOCK */
return(null);
}
}
