695 lines
18 KiB
C
695 lines
18 KiB
C
/*
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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/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_var.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 <net/pfvar.h>
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#include <net/if_pfsync.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netipx/ipx.h>
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#include <netipx/ipx_if.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <errno.h>
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#include <libutil.h>
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#include <signal.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 <unistd.h>
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#include "netstat.h"
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#define YES 1
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#define NO 0
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static void sidewaysintpr (u_int, u_long);
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static void catchalarm (int);
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#ifdef INET6
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static char ntop_buf[INET6_ADDRSTRLEN]; /* for inet_ntop() */
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#endif
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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 __unused, const char *name, int af1 __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 (zflag)
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memset(&zerostat, 0, len);
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if (sysctlbyname("net.inet.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.inet.pfsync.stats");
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return;
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}
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printf("%s:\n", name);
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#define p(f, m) if (pfsyncstat.f || sflag <= 1) \
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printf(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f))
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#define p2(f, m) if (pfsyncstat.f || sflag <= 1) \
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printf(m, (uintmax_t)pfsyncstat.f)
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p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n");
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p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n");
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p(pfsyncs_badif, "\t\t%ju packet%s discarded for bad interface\n");
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p(pfsyncs_badttl, "\t\t%ju packet%s discarded for bad ttl\n");
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p(pfsyncs_hdrops, "\t\t%ju packet%s shorter than header\n");
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p(pfsyncs_badver, "\t\t%ju packet%s discarded for bad version\n");
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p(pfsyncs_badauth, "\t\t%ju packet%s discarded for bad HMAC\n");
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p(pfsyncs_badact,"\t\t%ju packet%s discarded for bad action\n");
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p(pfsyncs_badlen, "\t\t%ju packet%s discarded for short packet\n");
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p(pfsyncs_badval, "\t\t%ju state%s discarded for bad values\n");
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p(pfsyncs_stale, "\t\t%ju stale state%s\n");
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p(pfsyncs_badstate, "\t\t%ju failed state lookup/insert%s\n");
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p(pfsyncs_opackets, "\t%ju packet%s sent (IPv4)\n");
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p(pfsyncs_opackets6, "\t%ju packet%s sent (IPv6)\n");
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p2(pfsyncs_onomem, "\t\t%ju send failed due to mbuf memory error\n");
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p2(pfsyncs_oerrors, "\t\t%ju send error\n");
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#undef p
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#undef p2
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}
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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, u_long value, short showvalue)
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{
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const char *lsep, *rsep;
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char newfmt[32];
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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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sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep);
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printf(newfmt, "-");
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return;
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}
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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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sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep);
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printf(newfmt, buf);
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} else {
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/* Construct the format string. */
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sprintf(newfmt, "%s%%%d%s%s", lsep, width, fmt, rsep);
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printf(newfmt, value);
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}
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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, u_long ifnetaddr, void (*pfunc)(char *))
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{
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struct ifnet ifnet;
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struct ifnethead ifnethead;
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union {
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struct ifaddr ifa;
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struct in_ifaddr in;
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#ifdef INET6
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struct in6_ifaddr in6;
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#endif
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struct ipx_ifaddr ipx;
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} ifaddr;
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u_long ifaddraddr;
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u_long ifaddrfound;
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u_long ifnetfound;
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u_long opackets;
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u_long ipackets;
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u_long obytes;
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u_long ibytes;
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u_long omcasts;
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u_long imcasts;
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u_long oerrors;
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u_long ierrors;
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u_long collisions;
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short timer;
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int drops;
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struct sockaddr *sa = NULL;
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char name[IFNAMSIZ];
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short network_layer;
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short link_layer;
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if (ifnetaddr == 0) {
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printf("ifnet: symbol not defined\n");
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return;
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}
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if (_interval) {
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sidewaysintpr((unsigned)_interval, ifnetaddr);
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return;
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}
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if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead))
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return;
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ifnetaddr = (u_long)TAILQ_FIRST(&ifnethead);
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if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
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return;
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if (!pfunc) {
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if (Wflag)
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printf("%-7.7s", "Name");
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else
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printf("%-5.5s", "Name");
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printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s",
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"Mtu", "Network", "Address", "Ipkts", "Ierrs");
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if (bflag)
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printf(" %10.10s","Ibytes");
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printf(" %8.8s %5.5s", "Opkts", "Oerrs");
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if (bflag)
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printf(" %10.10s","Obytes");
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printf(" %5s", "Coll");
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if (tflag)
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printf(" %s", "Time");
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if (dflag)
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printf(" %s", "Drop");
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putchar('\n');
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}
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ifaddraddr = 0;
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while (ifnetaddr || ifaddraddr) {
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struct sockaddr_in *sockin;
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#ifdef INET6
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struct sockaddr_in6 *sockin6;
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#endif
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char *cp;
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int n, m;
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network_layer = 0;
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link_layer = 0;
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if (ifaddraddr == 0) {
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ifnetfound = ifnetaddr;
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if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
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return;
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strlcpy(name, ifnet.if_xname, sizeof(name));
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ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_link);
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if (interface != 0 && (strcmp(name, interface) != 0))
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continue;
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cp = index(name, '\0');
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if (pfunc) {
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(*pfunc)(name);
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continue;
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}
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if ((ifnet.if_flags&IFF_UP) == 0)
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*cp++ = '*';
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*cp = '\0';
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ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrhead);
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}
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ifaddrfound = ifaddraddr;
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/*
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* Get the interface stats. These may get
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* overriden below on a per-interface basis.
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*/
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opackets = ifnet.if_opackets;
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ipackets = ifnet.if_ipackets;
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obytes = ifnet.if_obytes;
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ibytes = ifnet.if_ibytes;
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omcasts = ifnet.if_omcasts;
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imcasts = ifnet.if_imcasts;
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oerrors = ifnet.if_oerrors;
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ierrors = ifnet.if_ierrors;
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collisions = ifnet.if_collisions;
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timer = ifnet.if_timer;
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drops = ifnet.if_snd.ifq_drops;
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if (ifaddraddr == 0) {
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if (Wflag)
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printf("%-7.7s", name);
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else
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printf("%-5.5s", name);
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printf(" %5lu ", ifnet.if_mtu);
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printf("%-13.13s ", "none");
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printf("%-17.17s ", "none");
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} else {
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if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) {
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ifaddraddr = 0;
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continue;
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}
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#define CP(x) ((char *)(x))
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cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
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CP(&ifaddr);
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sa = (struct sockaddr *)cp;
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if (af != AF_UNSPEC && sa->sa_family != af) {
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ifaddraddr =
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(u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link);
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continue;
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}
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if (Wflag)
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printf("%-7.7s", name);
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else
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printf("%-5.5s", name);
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printf(" %5lu ", ifnet.if_mtu);
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switch (sa->sa_family) {
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case AF_UNSPEC:
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printf("%-13.13s ", "none");
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printf("%-15.15s ", "none");
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break;
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case AF_INET:
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sockin = (struct sockaddr_in *)sa;
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#ifdef notdef
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/* can't use inet_makeaddr because kernel
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* keeps nets unshifted.
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*/
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in = inet_makeaddr(ifaddr.in.ia_subnet,
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INADDR_ANY);
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printf("%-13.13s ", netname(in.s_addr,
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ifaddr.in.ia_subnetmask));
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#else
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printf("%-13.13s ",
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netname(htonl(ifaddr.in.ia_subnet),
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ifaddr.in.ia_subnetmask));
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#endif
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printf("%-17.17s ",
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routename(sockin->sin_addr.s_addr));
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network_layer = 1;
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break;
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#ifdef INET6
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case AF_INET6:
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sockin6 = (struct sockaddr_in6 *)sa;
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printf("%-13.13s ",
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netname6(&ifaddr.in6.ia_addr,
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&ifaddr.in6.ia_prefixmask.sin6_addr));
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printf("%-17.17s ",
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inet_ntop(AF_INET6,
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&sockin6->sin6_addr,
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ntop_buf, sizeof(ntop_buf)));
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network_layer = 1;
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break;
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#endif /*INET6*/
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case AF_IPX:
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{
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struct sockaddr_ipx *sipx =
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(struct sockaddr_ipx *)sa;
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u_long net;
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char netnum[10];
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*(union ipx_net *) &net = sipx->sipx_addr.x_net;
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sprintf(netnum, "%lx", (u_long)ntohl(net));
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printf("ipx:%-8s ", netnum);
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/* printf("ipx:%-8s ", netname(net, 0L)); */
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printf("%-17s ",
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ipx_phost((struct sockaddr *)sipx));
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}
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network_layer = 1;
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break;
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case AF_APPLETALK:
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printf("atalk:%-12.12s ",atalk_print(sa,0x10) );
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printf("%-11.11s ",atalk_print(sa,0x0b) );
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break;
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case AF_LINK:
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{
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struct sockaddr_dl *sdl =
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(struct sockaddr_dl *)sa;
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char linknum[10];
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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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m = printf("%-13.13s ", linknum);
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}
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goto hexprint;
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default:
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m = printf("(%d)", sa->sa_family);
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for (cp = sa->sa_len + (char *)sa;
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--cp > sa->sa_data && (*cp == 0);) {}
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n = cp - sa->sa_data + 1;
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cp = sa->sa_data;
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hexprint:
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while (--n >= 0)
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m += printf("%02x%c", *cp++ & 0xff,
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n > 0 ? ':' : ' ');
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m = 32 - m;
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while (m-- > 0)
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putchar(' ');
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link_layer = 1;
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break;
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}
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/*
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* Fixup the statistics for interfaces that
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* update stats for their network addresses
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*/
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if (network_layer) {
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opackets = ifaddr.in.ia_ifa.if_opackets;
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ipackets = ifaddr.in.ia_ifa.if_ipackets;
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obytes = ifaddr.in.ia_ifa.if_obytes;
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ibytes = ifaddr.in.ia_ifa.if_ibytes;
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}
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ifaddraddr = (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link);
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}
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show_stat("lu", 8, ipackets, link_layer|network_layer);
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show_stat("lu", 5, ierrors, link_layer);
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if (bflag)
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show_stat("lu", 10, ibytes, link_layer|network_layer);
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show_stat("lu", 8, opackets, link_layer|network_layer);
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show_stat("lu", 5, oerrors, link_layer);
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if (bflag)
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show_stat("lu", 10, obytes, link_layer|network_layer);
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show_stat("NRSlu", 5, collisions, link_layer);
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if (tflag)
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show_stat("LSd", 4, timer, link_layer);
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if (dflag)
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show_stat("LSd", 4, drops, link_layer);
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putchar('\n');
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if (aflag && ifaddrfound) {
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/*
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* Print family's multicast addresses
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*/
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struct ifmultiaddr *multiaddr;
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struct ifmultiaddr ifma;
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union {
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struct sockaddr sa;
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struct sockaddr_in in;
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#ifdef INET6
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struct sockaddr_in6 in6;
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#endif /* INET6 */
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struct sockaddr_dl dl;
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} msa;
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const char *fmt;
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TAILQ_FOREACH(multiaddr, &ifnet.if_multiaddrs, ifma_link) {
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if (kread((u_long)multiaddr, (char *)&ifma,
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sizeof ifma))
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break;
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multiaddr = &ifma;
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if (kread((u_long)ifma.ifma_addr, (char *)&msa,
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sizeof msa))
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break;
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if (msa.sa.sa_family != sa->sa_family)
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continue;
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fmt = 0;
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switch (msa.sa.sa_family) {
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case AF_INET:
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fmt = routename(msa.in.sin_addr.s_addr);
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break;
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#ifdef INET6
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case AF_INET6:
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printf("%*s %-19.19s(refs: %d)\n",
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Wflag ? 27 : 25, "",
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inet_ntop(AF_INET6,
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&msa.in6.sin6_addr,
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ntop_buf,
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sizeof(ntop_buf)),
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ifma.ifma_refcount);
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break;
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#endif /* INET6 */
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case AF_LINK:
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switch (msa.dl.sdl_type) {
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case IFT_ETHER:
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case IFT_FDDI:
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fmt = ether_ntoa(
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(struct ether_addr *)
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LLADDR(&msa.dl));
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break;
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}
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break;
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}
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if (fmt) {
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printf("%*s %-17.17s",
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Wflag ? 27 : 25, "", fmt);
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if (msa.sa.sa_family == AF_LINK) {
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printf(" %8lu", imcasts);
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printf("%*s",
|
|
bflag ? 17 : 6, "");
|
|
printf(" %8lu", omcasts);
|
|
}
|
|
putchar('\n');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
struct iftot {
|
|
SLIST_ENTRY(iftot) chain;
|
|
char ift_name[IFNAMSIZ]; /* interface name */
|
|
u_long ift_ip; /* input packets */
|
|
u_long ift_ie; /* input errors */
|
|
u_long ift_op; /* output packets */
|
|
u_long ift_oe; /* output errors */
|
|
u_long ift_co; /* collisions */
|
|
u_int ift_dr; /* drops */
|
|
u_long ift_ib; /* input bytes */
|
|
u_long ift_ob; /* output bytes */
|
|
};
|
|
|
|
u_char signalled; /* set if alarm goes off "early" */
|
|
|
|
/*
|
|
* 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.
|
|
* XXX - should be rewritten to use ifmib(4).
|
|
*/
|
|
static void
|
|
sidewaysintpr(unsigned interval1, u_long off)
|
|
{
|
|
struct ifnet ifnet;
|
|
u_long firstifnet;
|
|
struct ifnethead ifnethead;
|
|
struct iftot *iftot, *ip, *ipn, *total, *sum, *interesting;
|
|
int line;
|
|
int oldmask, first;
|
|
u_long interesting_off;
|
|
|
|
if (kread(off, (char *)&ifnethead, sizeof ifnethead))
|
|
return;
|
|
firstifnet = (u_long)TAILQ_FIRST(&ifnethead);
|
|
|
|
if ((iftot = malloc(sizeof(struct iftot))) == NULL) {
|
|
printf("malloc failed\n");
|
|
exit(1);
|
|
}
|
|
memset(iftot, 0, sizeof(struct iftot));
|
|
|
|
interesting = NULL;
|
|
interesting_off = 0;
|
|
for (off = firstifnet, ip = iftot; off;) {
|
|
char name[IFNAMSIZ];
|
|
|
|
if (kread(off, (char *)&ifnet, sizeof ifnet))
|
|
break;
|
|
strlcpy(name, ifnet.if_xname, sizeof(name));
|
|
if (interface && strcmp(name, interface) == 0) {
|
|
interesting = ip;
|
|
interesting_off = off;
|
|
}
|
|
snprintf(ip->ift_name, sizeof(ip->ift_name), "(%s)", name);;
|
|
if ((ipn = malloc(sizeof(struct iftot))) == NULL) {
|
|
printf("malloc failed\n");
|
|
exit(1);
|
|
}
|
|
memset(ipn, 0, sizeof(struct iftot));
|
|
SLIST_NEXT(ip, chain) = ipn;
|
|
ip = ipn;
|
|
off = (u_long)TAILQ_NEXT(&ifnet, if_link);
|
|
}
|
|
if (interface && interesting == NULL)
|
|
errx(1, "%s: unknown interface", interface);
|
|
if ((total = malloc(sizeof(struct iftot))) == NULL) {
|
|
printf("malloc failed\n");
|
|
exit(1);
|
|
}
|
|
memset(total, 0, sizeof(struct iftot));
|
|
if ((sum = malloc(sizeof(struct iftot))) == NULL) {
|
|
printf("malloc failed\n");
|
|
exit(1);
|
|
}
|
|
memset(sum, 0, sizeof(struct iftot));
|
|
|
|
(void)signal(SIGALRM, catchalarm);
|
|
signalled = NO;
|
|
(void)alarm(interval1);
|
|
first = 1;
|
|
banner:
|
|
printf("%17s %14s %16s", "input",
|
|
interesting ? interesting->ift_name : "(Total)", "output");
|
|
putchar('\n');
|
|
printf("%10s %5s %10s %10s %5s %10s %5s",
|
|
"packets", "errs", "bytes", "packets", "errs", "bytes", "colls");
|
|
if (dflag)
|
|
printf(" %5.5s", "drops");
|
|
putchar('\n');
|
|
fflush(stdout);
|
|
line = 0;
|
|
loop:
|
|
if (interesting != NULL) {
|
|
ip = interesting;
|
|
if (kread(interesting_off, (char *)&ifnet, sizeof ifnet)) {
|
|
printf("???\n");
|
|
exit(1);
|
|
};
|
|
if (!first) {
|
|
show_stat("lu", 10, ifnet.if_ipackets - ip->ift_ip, 1);
|
|
show_stat("lu", 5, ifnet.if_ierrors - ip->ift_ie, 1);
|
|
show_stat("lu", 10, ifnet.if_ibytes - ip->ift_ib, 1);
|
|
show_stat("lu", 10, ifnet.if_opackets - ip->ift_op, 1);
|
|
show_stat("lu", 5, ifnet.if_oerrors - ip->ift_oe, 1);
|
|
show_stat("lu", 10, ifnet.if_obytes - ip->ift_ob, 1);
|
|
show_stat("NRSlu", 5,
|
|
ifnet.if_collisions - ip->ift_co, 1);
|
|
if (dflag)
|
|
show_stat("LSu", 5,
|
|
ifnet.if_snd.ifq_drops - ip->ift_dr, 1);
|
|
}
|
|
ip->ift_ip = ifnet.if_ipackets;
|
|
ip->ift_ie = ifnet.if_ierrors;
|
|
ip->ift_ib = ifnet.if_ibytes;
|
|
ip->ift_op = ifnet.if_opackets;
|
|
ip->ift_oe = ifnet.if_oerrors;
|
|
ip->ift_ob = ifnet.if_obytes;
|
|
ip->ift_co = ifnet.if_collisions;
|
|
ip->ift_dr = ifnet.if_snd.ifq_drops;
|
|
} else {
|
|
sum->ift_ip = 0;
|
|
sum->ift_ie = 0;
|
|
sum->ift_ib = 0;
|
|
sum->ift_op = 0;
|
|
sum->ift_oe = 0;
|
|
sum->ift_ob = 0;
|
|
sum->ift_co = 0;
|
|
sum->ift_dr = 0;
|
|
for (off = firstifnet, ip = iftot;
|
|
off && SLIST_NEXT(ip, chain) != NULL;
|
|
ip = SLIST_NEXT(ip, chain)) {
|
|
if (kread(off, (char *)&ifnet, sizeof ifnet)) {
|
|
off = 0;
|
|
continue;
|
|
}
|
|
sum->ift_ip += ifnet.if_ipackets;
|
|
sum->ift_ie += ifnet.if_ierrors;
|
|
sum->ift_ib += ifnet.if_ibytes;
|
|
sum->ift_op += ifnet.if_opackets;
|
|
sum->ift_oe += ifnet.if_oerrors;
|
|
sum->ift_ob += ifnet.if_obytes;
|
|
sum->ift_co += ifnet.if_collisions;
|
|
sum->ift_dr += ifnet.if_snd.ifq_drops;
|
|
off = (u_long)TAILQ_NEXT(&ifnet, if_link);
|
|
}
|
|
if (!first) {
|
|
show_stat("lu", 10, sum->ift_ip - total->ift_ip, 1);
|
|
show_stat("lu", 5, sum->ift_ie - total->ift_ie, 1);
|
|
show_stat("lu", 10, sum->ift_ib - total->ift_ib, 1);
|
|
show_stat("lu", 10, sum->ift_op - total->ift_op, 1);
|
|
show_stat("lu", 5, sum->ift_oe - total->ift_oe, 1);
|
|
show_stat("lu", 10, sum->ift_ob - total->ift_ob, 1);
|
|
show_stat("NRSlu", 5, sum->ift_co - total->ift_co, 1);
|
|
if (dflag)
|
|
show_stat("LSu", 5,
|
|
sum->ift_dr - total->ift_dr, 1);
|
|
}
|
|
*total = *sum;
|
|
}
|
|
if (!first)
|
|
putchar('\n');
|
|
fflush(stdout);
|
|
oldmask = sigblock(sigmask(SIGALRM));
|
|
if (! signalled) {
|
|
sigpause(0);
|
|
}
|
|
sigsetmask(oldmask);
|
|
signalled = NO;
|
|
(void)alarm(interval1);
|
|
line++;
|
|
first = 0;
|
|
if (line == 21)
|
|
goto banner;
|
|
else
|
|
goto loop;
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
/*
|
|
* Called if an interval expires before sidewaysintpr has completed a loop.
|
|
* Sets a flag to not wait for the alarm.
|
|
*/
|
|
static void
|
|
catchalarm(int signo __unused)
|
|
{
|
|
signalled = YES;
|
|
}
|