4.3BSD - /usr/src/ucb/netstat/host.c

   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: }

Defined functions

Defined variables