673 lines
18 KiB
C
673 lines
18 KiB
C
/*-
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* Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org>
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/ethernet.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <arpa/inet.h>
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#ifdef PF
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#include <net/pfvar.h>
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#include <net/if_pfsync.h>
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#endif
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#include <err.h>
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#include <errno.h>
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#include <ifaddrs.h>
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#include <libutil.h>
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#ifdef INET6
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#include <netdb.h>
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#endif
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#include <signal.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include <libxo/xo.h>
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#include "netstat.h"
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static void sidewaysintpr(int);
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#ifdef INET6
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static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
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#endif
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#ifdef PF
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static const char* pfsyncacts[] = {
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/* PFSYNC_ACT_CLR */ "clear all request",
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/* PFSYNC_ACT_INS */ "state insert",
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/* PFSYNC_ACT_INS_ACK */ "state inserted ack",
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/* PFSYNC_ACT_UPD */ "state update",
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/* PFSYNC_ACT_UPD_C */ "compressed state update",
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/* PFSYNC_ACT_UPD_REQ */ "uncompressed state request",
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/* PFSYNC_ACT_DEL */ "state delete",
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/* PFSYNC_ACT_DEL_C */ "compressed state delete",
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/* PFSYNC_ACT_INS_F */ "fragment insert",
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/* PFSYNC_ACT_DEL_F */ "fragment delete",
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/* PFSYNC_ACT_BUS */ "bulk update mark",
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/* PFSYNC_ACT_TDB */ "TDB replay counter update",
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/* PFSYNC_ACT_EOF */ "end of frame mark",
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};
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static const char* pfsyncacts_name[] = {
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/* PFSYNC_ACT_CLR */ "clear-all-request",
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/* PFSYNC_ACT_INS */ "state-insert",
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/* PFSYNC_ACT_INS_ACK */ "state-inserted-ack",
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/* PFSYNC_ACT_UPD */ "state-update",
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/* PFSYNC_ACT_UPD_C */ "compressed-state-update",
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/* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request",
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/* PFSYNC_ACT_DEL */ "state-delete",
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/* PFSYNC_ACT_DEL_C */ "compressed-state-delete",
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/* PFSYNC_ACT_INS_F */ "fragment-insert",
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/* PFSYNC_ACT_DEL_F */ "fragment-delete",
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/* PFSYNC_ACT_BUS */ "bulk-update-mark",
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/* PFSYNC_ACT_TDB */ "TDB-replay-counter-update",
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/* PFSYNC_ACT_EOF */ "end-of-frame-mark",
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};
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static void
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pfsync_acts_stats(const char *list, const char *desc, uint64_t *a)
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{
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int i;
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xo_open_list(list);
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for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) {
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if (*a || sflag <= 1) {
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xo_open_instance(list);
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xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n",
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pfsyncacts_name[i], (uintmax_t)(*a),
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pfsyncacts[i], plural(*a), desc);
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xo_close_instance(list);
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}
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}
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xo_close_list(list);
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}
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/*
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* Dump pfsync statistics structure.
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*/
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void
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pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
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{
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struct pfsyncstats pfsyncstat, zerostat;
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size_t len = sizeof(struct pfsyncstats);
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if (live) {
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if (zflag)
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memset(&zerostat, 0, len);
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if (sysctlbyname("net.pfsync.stats", &pfsyncstat, &len,
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zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
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if (errno != ENOENT)
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warn("sysctl: net.pfsync.stats");
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return;
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}
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} else
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kread(off, &pfsyncstat, len);
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xo_emit("{T:/%s}:\n", name);
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xo_open_container(name);
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#define p(f, m) if (pfsyncstat.f || sflag <= 1) \
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xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f))
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p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} "
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"{N:/packet%s received (IPv4)}\n");
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p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} "
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"{N:/packet%s received (IPv6)}\n");
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pfsync_acts_stats("input-histogram", "received",
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&pfsyncstat.pfsyncs_iacts[0]);
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p(pfsyncs_badif, "\t\t/{:dropped-bad-interface/%ju} "
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"{N:/packet%s discarded for bad interface}\n");
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p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} "
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"{N:/packet%s discarded for bad ttl}\n");
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p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} "
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"{N:/packet%s shorter than header}\n");
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p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} "
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"{N:/packet%s discarded for bad version}\n");
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p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} "
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"{N:/packet%s discarded for bad HMAC}\n");
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p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} "
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"{N:/packet%s discarded for bad action}\n");
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p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} "
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"{N:/packet%s discarded for short packet}\n");
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p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} "
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"{N:/state%s discarded for bad values}\n");
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p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} "
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"{N:/stale state%s}\n");
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p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} "
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"{N:/failed state lookup\\/insert%s}\n");
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p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} "
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"{N:/packet%s sent (IPv4})\n");
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p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} "
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"{N:/packet%s sent (IPv6})\n");
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pfsync_acts_stats("output-histogram", "sent",
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&pfsyncstat.pfsyncs_oacts[0]);
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p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} "
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"{N:/failure%s due to mbuf memory error}\n");
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p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} "
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"{N:/send error%s}\n");
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#undef p
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xo_close_container(name);
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}
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#endif /* PF */
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/*
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* Display a formatted value, or a '-' in the same space.
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*/
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static void
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show_stat(const char *fmt, int width, const char *name,
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u_long value, short showvalue)
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{
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const char *lsep, *rsep;
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char newfmt[64];
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lsep = "";
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if (strncmp(fmt, "LS", 2) == 0) {
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lsep = " ";
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fmt += 2;
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}
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rsep = " ";
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if (strncmp(fmt, "NRS", 3) == 0) {
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rsep = "";
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fmt += 3;
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}
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if (showvalue == 0) {
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/* Print just dash. */
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xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep);
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return;
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}
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/*
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* XXX: workaround {P:} modifier can't be empty and doesn't seem to
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* take args... so we need to conditionally include it in the format.
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*/
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#define maybe_pad(pad) do { \
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if (strlen(pad)) { \
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snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \
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xo_emit(newfmt); \
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} \
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} while (0)
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if (hflag) {
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char buf[5];
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/* Format in human readable form. */
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humanize_number(buf, sizeof(buf), (int64_t)value, "",
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HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL);
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maybe_pad(lsep);
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snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width);
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xo_emit(newfmt, buf);
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maybe_pad(rsep);
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} else {
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/* Construct the format string. */
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maybe_pad(lsep);
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snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}",
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name, width, fmt);
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xo_emit(newfmt, value);
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maybe_pad(rsep);
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}
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}
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/*
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* Find next multiaddr for a given interface name.
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*/
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static struct ifmaddrs *
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next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family)
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{
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for(; ifma != NULL; ifma = ifma->ifma_next) {
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struct sockaddr_dl *sdl;
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sdl = (struct sockaddr_dl *)ifma->ifma_name;
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if (ifma->ifma_addr->sa_family == family &&
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strcmp(sdl->sdl_data, name) == 0)
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break;
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}
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return (ifma);
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}
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/*
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* Print a description of the network interfaces.
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*/
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void
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intpr(int interval, void (*pfunc)(char *), int af)
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{
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struct ifaddrs *ifap, *ifa;
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struct ifmaddrs *ifmap, *ifma;
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if (interval)
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return sidewaysintpr(interval);
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if (getifaddrs(&ifap) != 0)
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err(EX_OSERR, "getifaddrs");
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if (aflag && getifmaddrs(&ifmap) != 0)
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err(EX_OSERR, "getifmaddrs");
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xo_open_list("interface");
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if (!pfunc) {
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if (Wflag)
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xo_emit("{T:/%-7.7s}", "Name");
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else
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xo_emit("{T:/%-5.5s}", "Name");
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xo_emit(" {T:/%5.5s} {T:/%-13.13s} {T:/%-17.17s} {T:/%8.8s} "
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"{T:/%5.5s} {T:/%5.5s}",
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"Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop");
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if (bflag)
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xo_emit(" {T:/%10.10s}","Ibytes");
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xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs");
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if (bflag)
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xo_emit(" {T:/%10.10s}","Obytes");
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xo_emit(" {T:/%5s}", "Coll");
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if (dflag)
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xo_emit(" {T:/%s}", "Drop");
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xo_emit("\n");
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}
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for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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bool network = false, link = false;
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char *name;
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if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0)
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continue;
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name = ifa->ifa_name;
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if (pfunc) {
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(*pfunc)(name);
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/*
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* Skip all ifaddrs belonging to same interface.
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*/
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while(ifa->ifa_next != NULL &&
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(strcmp(ifa->ifa_next->ifa_name, name) == 0)) {
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ifa = ifa->ifa_next;
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}
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continue;
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}
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if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af)
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continue;
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xo_open_instance("interface");
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if (Wflag)
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xo_emit("{tk:name/%-7.7s}", name);
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else
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xo_emit("{tk:name/%-5.5s}", name);
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#define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu)
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show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa));
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#undef IFA_MTU
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switch (ifa->ifa_addr->sa_family) {
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case AF_UNSPEC:
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xo_emit("{:network/%-13.13s} ", "none");
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xo_emit("{:address/%-15.15s} ", "none");
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break;
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case AF_INET:
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{
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struct sockaddr_in *sin, *mask;
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sin = (struct sockaddr_in *)ifa->ifa_addr;
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mask = (struct sockaddr_in *)ifa->ifa_netmask;
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xo_emit("{t:network/%-13.13s} ",
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netname(sin->sin_addr.s_addr,
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mask->sin_addr.s_addr));
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xo_emit("{t:address/%-17.17s} ",
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routename(sin->sin_addr.s_addr));
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network = true;
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break;
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}
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#ifdef INET6
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case AF_INET6:
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{
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struct sockaddr_in6 *sin6, *mask;
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sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
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mask = (struct sockaddr_in6 *)ifa->ifa_netmask;
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xo_emit("{t:network/%-13.13s} ",
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netname6(sin6, &mask->sin6_addr));
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getnameinfo(ifa->ifa_addr, ifa->ifa_addr->sa_len,
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addr_buf, sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
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xo_emit("{t:address/%-17.17s} ", addr_buf);
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network = 1;
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break;
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}
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#endif /* INET6 */
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case AF_LINK:
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{
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struct sockaddr_dl *sdl;
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char *cp, linknum[10];
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int len = 32;
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char buf[len];
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int n, z;
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sdl = (struct sockaddr_dl *)ifa->ifa_addr;
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cp = (char *)LLADDR(sdl);
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n = sdl->sdl_alen;
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sprintf(linknum, "<Link#%d>", sdl->sdl_index);
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xo_emit("{t:network/%-13.13s} ", linknum);
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buf[0] = '\0';
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z = 0;
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while ((--n >= 0) && (z < len)) {
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snprintf(buf + z, len - z, "%02x%c",
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*cp++ & 0xff, n > 0 ? ':' : ' ');
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z += 3;
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}
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if (z > 0)
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xo_emit("{:address/%*s}", 32 - z, buf);
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else
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xo_emit("{P: }");
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link = 1;
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break;
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}
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}
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#define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s)
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show_stat("lu", 8, "received-packets", IFA_STAT(ipackets),
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link|network);
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show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), link);
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show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), link);
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if (bflag)
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show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes),
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link|network);
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show_stat("lu", 8, "sent-packets", IFA_STAT(opackets),
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link|network);
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show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link);
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if (bflag)
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show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes),
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link|network);
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show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), link);
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if (dflag)
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show_stat("LSlu", 5, "dropped-packets",
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IFA_STAT(oqdrops), link);
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xo_emit("\n");
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if (!aflag) {
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xo_close_instance("interface");
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continue;
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}
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/*
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* Print family's multicast addresses.
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*/
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xo_open_list("multicast-address");
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for (ifma = next_ifma(ifmap, ifa->ifa_name,
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ifa->ifa_addr->sa_family);
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ifma != NULL;
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ifma = next_ifma(ifma, ifa->ifa_name,
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ifa->ifa_addr->sa_family)) {
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const char *fmt = NULL;
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xo_open_instance("multicast-address");
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switch (ifma->ifma_addr->sa_family) {
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case AF_INET:
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{
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struct sockaddr_in *sin;
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sin = (struct sockaddr_in *)ifma->ifma_addr;
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fmt = routename(sin->sin_addr.s_addr);
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|
break;
|
|
}
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
|
|
/* in6_fillscopeid(&msa.in6); */
|
|
getnameinfo(ifma->ifma_addr,
|
|
ifma->ifma_addr->sa_len, addr_buf,
|
|
sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
|
|
xo_emit("{P:/%*s }{t:address/%-19.19s}",
|
|
Wflag ? 27 : 25, "", addr_buf);
|
|
break;
|
|
#endif /* INET6 */
|
|
case AF_LINK:
|
|
{
|
|
struct sockaddr_dl *sdl;
|
|
|
|
sdl = (struct sockaddr_dl *)ifma->ifma_addr;
|
|
switch (sdl->sdl_type) {
|
|
case IFT_ETHER:
|
|
case IFT_FDDI:
|
|
fmt = ether_ntoa(
|
|
(struct ether_addr *)LLADDR(sdl));
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fmt) {
|
|
xo_emit("{P:/%*s }{t:address/%-17.17s/}",
|
|
Wflag ? 27 : 25, "", fmt);
|
|
if (ifma->ifma_addr->sa_family == AF_LINK) {
|
|
xo_emit(" {:received-packets/%8lu}",
|
|
IFA_STAT(imcasts));
|
|
xo_emit("{P:/%*s}", bflag? 17 : 6, "");
|
|
xo_emit(" {:sent-packets/%8lu}",
|
|
IFA_STAT(omcasts));
|
|
}
|
|
xo_emit("\n");
|
|
}
|
|
xo_close_instance("multicast-address");
|
|
ifma = ifma->ifma_next;
|
|
}
|
|
xo_close_list("multicast-address");
|
|
xo_close_instance("interface");
|
|
}
|
|
xo_close_list("interface");
|
|
|
|
freeifaddrs(ifap);
|
|
if (aflag)
|
|
freeifmaddrs(ifmap);
|
|
}
|
|
|
|
struct iftot {
|
|
u_long ift_ip; /* input packets */
|
|
u_long ift_ie; /* input errors */
|
|
u_long ift_id; /* input drops */
|
|
u_long ift_op; /* output packets */
|
|
u_long ift_oe; /* output errors */
|
|
u_long ift_od; /* output drops */
|
|
u_long ift_co; /* collisions */
|
|
u_long ift_ib; /* input bytes */
|
|
u_long ift_ob; /* output bytes */
|
|
};
|
|
|
|
/*
|
|
* Obtain stats for interface(s).
|
|
*/
|
|
static void
|
|
fill_iftot(struct iftot *st)
|
|
{
|
|
struct ifaddrs *ifap, *ifa;
|
|
bool found = false;
|
|
|
|
if (getifaddrs(&ifap) != 0)
|
|
xo_err(EX_OSERR, "getifaddrs");
|
|
|
|
bzero(st, sizeof(*st));
|
|
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if (ifa->ifa_addr->sa_family != AF_LINK)
|
|
continue;
|
|
if (interface) {
|
|
if (strcmp(ifa->ifa_name, interface) == 0)
|
|
found = true;
|
|
else
|
|
continue;
|
|
}
|
|
|
|
st->ift_ip += IFA_STAT(ipackets);
|
|
st->ift_ie += IFA_STAT(ierrors);
|
|
st->ift_id += IFA_STAT(iqdrops);
|
|
st->ift_ib += IFA_STAT(ibytes);
|
|
st->ift_op += IFA_STAT(opackets);
|
|
st->ift_oe += IFA_STAT(oerrors);
|
|
st->ift_od += IFA_STAT(oqdrops);
|
|
st->ift_ob += IFA_STAT(obytes);
|
|
st->ift_co += IFA_STAT(collisions);
|
|
}
|
|
|
|
if (interface && found == false)
|
|
xo_err(EX_DATAERR, "interface %s not found", interface);
|
|
|
|
freeifaddrs(ifap);
|
|
}
|
|
|
|
/*
|
|
* Set a flag to indicate that a signal from the periodic itimer has been
|
|
* caught.
|
|
*/
|
|
static sig_atomic_t signalled;
|
|
static void
|
|
catchalarm(int signo __unused)
|
|
{
|
|
signalled = true;
|
|
}
|
|
|
|
/*
|
|
* Print a running summary of interface statistics.
|
|
* Repeat display every interval seconds, showing statistics
|
|
* collected over that interval. Assumes that interval is non-zero.
|
|
* First line printed at top of screen is always cumulative.
|
|
*/
|
|
static void
|
|
sidewaysintpr(int interval)
|
|
{
|
|
struct iftot ift[2], *new, *old;
|
|
struct itimerval interval_it;
|
|
int oldmask, line;
|
|
|
|
new = &ift[0];
|
|
old = &ift[1];
|
|
fill_iftot(old);
|
|
|
|
(void)signal(SIGALRM, catchalarm);
|
|
signalled = false;
|
|
interval_it.it_interval.tv_sec = interval;
|
|
interval_it.it_interval.tv_usec = 0;
|
|
interval_it.it_value = interval_it.it_interval;
|
|
setitimer(ITIMER_REAL, &interval_it, NULL);
|
|
xo_open_list("interface-statistics");
|
|
|
|
banner:
|
|
xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input",
|
|
interface != NULL ? interface : "(Total)", "output");
|
|
xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} "
|
|
"{T:/%10s} {T:/%5s}",
|
|
"packets", "errs", "idrops", "bytes", "packets", "errs", "bytes",
|
|
"colls");
|
|
if (dflag)
|
|
xo_emit(" {T:/%5.5s}", "drops");
|
|
xo_emit("\n");
|
|
xo_flush();
|
|
line = 0;
|
|
|
|
loop:
|
|
if ((noutputs != 0) && (--noutputs == 0)) {
|
|
xo_close_list("interface-statistics");
|
|
return;
|
|
}
|
|
oldmask = sigblock(sigmask(SIGALRM));
|
|
while (!signalled)
|
|
sigpause(0);
|
|
signalled = false;
|
|
sigsetmask(oldmask);
|
|
line++;
|
|
|
|
fill_iftot(new);
|
|
|
|
xo_open_instance("stats");
|
|
show_stat("lu", 10, "received-packets",
|
|
new->ift_ip - old->ift_ip, 1);
|
|
show_stat("lu", 5, "received-errors",
|
|
new->ift_ie - old->ift_ie, 1);
|
|
show_stat("lu", 5, "dropped-packets",
|
|
new->ift_id - old->ift_id, 1);
|
|
show_stat("lu", 10, "received-bytes",
|
|
new->ift_ib - old->ift_ib, 1);
|
|
show_stat("lu", 10, "sent-packets",
|
|
new->ift_op - old->ift_op, 1);
|
|
show_stat("lu", 5, "send-errors",
|
|
new->ift_oe - old->ift_oe, 1);
|
|
show_stat("lu", 10, "sent-bytes",
|
|
new->ift_ob - old->ift_ob, 1);
|
|
show_stat("NRSlu", 5, "collisions",
|
|
new->ift_co - old->ift_co, 1);
|
|
if (dflag)
|
|
show_stat("LSlu", 5, "dropped-packets",
|
|
new->ift_od - old->ift_od, 1);
|
|
xo_close_instance("stats");
|
|
xo_emit("\n");
|
|
xo_flush();
|
|
|
|
if (new == &ift[0]) {
|
|
new = &ift[1];
|
|
old = &ift[0];
|
|
} else {
|
|
new = &ift[0];
|
|
old = &ift[1];
|
|
}
|
|
|
|
if (line == 21)
|
|
goto banner;
|
|
else
|
|
goto loop;
|
|
|
|
/* NOTREACHED */
|
|
}
|