Returns information about the local system or about other systems
    in a cluster.

    The $GETSYIW service completes synchronously; that is, it returns
    to the caller with the requested information. For asynchronous
    completion, use the Get Systemwide Information ($GETSYI) service;
    $GETSYI returns to the caller after queuing the information
    request, without waiting for the information to be returned. In
    all other respects, these services are identical; For information
    about the $GETSYIW service, see the documentation about $GETSYI.

    Format

      SYS$GETSYIW  [efn] ,[csidadr] ,[nodename] ,itmlst [,iosb]

                   [,astadr] [,astprm]

    C Prototype

      int sys$getsyiw  (unsigned int efn, unsigned int *csidadr, void

                       *nodename, void *itmlst, struct _iosb *iosb,

                       void (*astadr)(__unknown_params), int astprm);
    You must specify either the csidadr or the nodename argument,
    but not both. For wildcard operations, however, you must use the
    csidadr argument.