usr/src/include/protocols/rwhod.h

/*      rwhod.h 4.3     82/12/24        */

struct  whod {
        int     wd_sendtime;
        int     wd_recvtime;
        char    wd_hostname[32];
        int     wd_loadav[3];
        int     wd_boottime;
        struct  whoent {
                struct  utmp we_utmp;
                int     we_idle;
        } wd_we[1024 / sizeof (struct whoent)];
};

#define RWHODIR "/usr/spool/rwho"       /* where data is stored */