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Annotation of 43BSD/ucb/netstat/host.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)host.c     5.2 (Berkeley) 9/27/85";
        !             9: #endif not lint
        !            10: 
        !            11: #include <sys/types.h>
        !            12: #include <sys/mbuf.h>
        !            13: 
        !            14: #include <netinet/in.h>
        !            15: #include <netimp/if_imp.h>
        !            16: #include <netimp/if_imphost.h>
        !            17: 
        !            18: extern int kmem;
        !            19: extern         int nflag;
        !            20: extern char *inetname();
        !            21: 
        !            22: /*
        !            23:  * Print the host tables associated with the ARPANET IMP.
        !            24:  * Symbolic addresses are shown unless the nflag is given.
        !            25:  */
        !            26: hostpr(hostsaddr)
        !            27:        off_t hostsaddr;
        !            28: {
        !            29:        struct mbuf *hosts, mb;
        !            30:        register struct mbuf *m;
        !            31:        register struct hmbuf *mh;
        !            32:        register struct host *hp;
        !            33:        char flagbuf[10], *flags;
        !            34:        int first = 1;
        !            35: 
        !            36:        if (hostsaddr == 0) {
        !            37:                printf("hosts: symbol not in namelist\n");
        !            38:                return;
        !            39:        }
        !            40:        klseek(kmem, hostsaddr, 0);
        !            41:        read(kmem, &hosts, sizeof (hosts));
        !            42:        m = hosts;
        !            43:        printf("IMP Host Table\n");
        !            44:        printf("%-5.5s %-15.15s %-4.4s %-9.9s %-4.4s %s\n",
        !            45:                "Flags", "Host", "Qcnt", "Q Address", "RFNM", "Timer");
        !            46:        while (m) {
        !            47:                klseek(kmem, m, 0);
        !            48:                read(kmem, &mb, sizeof (mb));
        !            49:                m = &mb;
        !            50:                mh = mtod(m, struct hmbuf *);
        !            51:                if (mh->hm_count == 0) {
        !            52:                        m = m->m_next;
        !            53:                        continue;
        !            54:                }
        !            55:                for (hp = mh->hm_hosts; hp < mh->hm_hosts + HPMBUF; hp++) {
        !            56:                        if ((hp->h_flags&HF_INUSE) == 0 && hp->h_timer == 0)
        !            57:                                continue;
        !            58:                        flags = flagbuf;
        !            59:                        *flags++ = hp->h_flags&HF_INUSE ? 'A' : 'F';
        !            60:                        if (hp->h_flags&HF_DEAD)
        !            61:                                *flags++ = 'D';
        !            62:                        if (hp->h_flags&HF_UNREACH)
        !            63:                                *flags++ = 'U';
        !            64:                        *flags = '\0';
        !            65:                        printf("%-5.5s %-15.15s %-4d %-9x %-4d %d\n",
        !            66:                                flagbuf,
        !            67:                                inetname(hp->h_addr),
        !            68:                                hp->h_qcnt,
        !            69:                                hp->h_q,
        !            70:                                hp->h_rfnm,
        !            71:                                hp->h_timer);
        !            72:                }
        !            73:                m = m->m_next;
        !            74:        }
        !            75: }

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