ZwCreateMailslotFile

function ZwCreateMailslotFile(

  FileHandle: PHANDLE;

  DesiredAccess: ACCESS_MASK;

  ObjectAttributes: POBJECT_ATTRIBUTES;

  IoStatusBlock: PIO_STATUS_BLOCK;

  CreateOptions: ULONG;

  Unknown: ULONG;

  MaxMessageSize: ULONG;

  ReadTimeout: PLARGE_INTEGER

):NTSTATUS;