routine fsys_forward (
    server: mach_port_t;
    RPT
    requestor: mach_port_send_t;
    argv: data_t);

Ask server to provide fsys translation service for us. requestor is the bootstrap port supplied to the original translator, and argv are the command line arguments. If the recipient accepts the request, he (or some delegate) should send fsys startup to requestor to start the filesystem up.