Function ZwCreateMailslotFile 

pub unsafe extern "system" fn ZwCreateMailslotFile(
    FileHandle: PHANDLE,
    DesiredAccess: ULONG,
    ObjectAttributes: POBJECT_ATTRIBUTES,
    IoStatusBlock: PIO_STATUS_BLOCK,
    CreateOptions: ULONG,
    MailslotQuota: ULONG,
    MaximumMessageSize: ULONG,
    ReadTimeout: PLARGE_INTEGER,
) -> NTSTATUS