SYS_OPENPIPE Open a FIFO pipe pair
SYS_CLOSE Close a file
SYS_COPYFD Create a copy of a file handle
-SYS_FDCTL Modify properties of a file descriptor
+SYS_FDCTL Modify flags of a file descriptor
SYS_READ Read from an open file
SYS_WRITE Write to an open file
SYS_IOCTL Perform an IOCtl Call