273 lines
6.7 KiB
C
273 lines
6.7 KiB
C
/* $NetBSD: slstats.c,v 1.15 2004/10/30 15:44:39 dsl Exp $ */
|
|
|
|
/*
|
|
* print serial line IP statistics:
|
|
* slstats [-i interval] [-v] [interface] [system [core]]
|
|
*
|
|
* Contributed by Van Jacobson (van@ee.lbl.gov), Dec 31, 1989.
|
|
*
|
|
* Copyright (c) 1989, 1990, 1991, 1992 Regents of the University of
|
|
* California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: slstats.c,v 1.15 2004/10/30 15:44:39 dsl Exp $");
|
|
#endif
|
|
|
|
#define INET
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/file.h>
|
|
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_var.h>
|
|
|
|
#include <net/slcompress.h>
|
|
#include <net/if_slvar.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <kvm.h>
|
|
#include <limits.h>
|
|
#include <nlist.h>
|
|
#include <paths.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
struct nlist nl[] = {
|
|
#define N_SOFTC 0
|
|
{ "_sl_softc" },
|
|
{ "" },
|
|
};
|
|
|
|
char *kernel; /* kernel for namelist */
|
|
char *kmemf; /* memory file */
|
|
|
|
kvm_t *kd;
|
|
|
|
int vflag;
|
|
unsigned interval = 5;
|
|
int unit;
|
|
|
|
void catchalarm __P((int));
|
|
void intpr __P((void));
|
|
int main __P((int, char **));
|
|
void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
char errbuf[_POSIX2_LINE_MAX];
|
|
gid_t egid = getegid();
|
|
int ch;
|
|
|
|
setegid(getgid());
|
|
while ((ch = getopt(argc, argv, "i:M:N:v")) != -1) {
|
|
switch (ch) {
|
|
case 'i':
|
|
interval = atoi(optarg);
|
|
if (interval <= 0)
|
|
usage();
|
|
break;
|
|
|
|
case 'M':
|
|
kmemf = optarg;
|
|
break;
|
|
|
|
case 'N':
|
|
kernel = optarg;
|
|
break;
|
|
|
|
case 'v':
|
|
++vflag;
|
|
break;
|
|
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc > 1)
|
|
usage();
|
|
|
|
while (argc--) {
|
|
if (isdigit((unsigned char)*argv[0])) {
|
|
unit = atoi(*argv);
|
|
if (unit < 0)
|
|
usage();
|
|
continue;
|
|
}
|
|
|
|
/* Fall to here, we have bogus arguments. */
|
|
usage();
|
|
}
|
|
|
|
/*
|
|
* Discard setgid privileges. If not the running kernel, we toss
|
|
* them away totally so that bad guys can't print interesting stuff
|
|
* from kernel memory, otherwise switch back to kmem for the
|
|
* duration of the kvm_openfiles() call.
|
|
*/
|
|
if (kmemf != NULL || kernel != NULL)
|
|
(void)setgid(getgid());
|
|
else
|
|
(void)setegid(egid);
|
|
|
|
memset(errbuf, 0, sizeof(errbuf));
|
|
if ((kd = kvm_openfiles(kernel, kmemf, NULL, O_RDONLY, errbuf)) == NULL)
|
|
errx(1, "can't open kvm: %s", errbuf);
|
|
|
|
/* get rid of it now anyway */
|
|
if (kmemf == NULL && kernel == NULL)
|
|
setgid(getgid());
|
|
|
|
if (kvm_nlist(kd, nl) < 0 || nl[0].n_type == 0)
|
|
errx(1, "%s: SLIP symbols not in namelist",
|
|
kernel == NULL ? _PATH_UNIX : kernel);
|
|
|
|
intpr();
|
|
exit(0);
|
|
}
|
|
|
|
#define V(offset) ((line % 20)? sc->offset - osc->offset : sc->offset)
|
|
#define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
|
|
|
|
void
|
|
usage()
|
|
{
|
|
|
|
(void)fprintf(stderr, "usage: %s [-M core] [-N system] [-i interval] %s",
|
|
getprogname(), "[-v] [unit]\n");
|
|
exit(1);
|
|
}
|
|
|
|
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.
|
|
*/
|
|
void
|
|
intpr()
|
|
{
|
|
int line = 0;
|
|
int oldmask;
|
|
struct sl_softc *sc, *osc;
|
|
u_long addr;
|
|
|
|
addr = nl[N_SOFTC].n_value + unit * sizeof(struct sl_softc);
|
|
sc = (struct sl_softc *)malloc(AMT);
|
|
osc = (struct sl_softc *)malloc(AMT);
|
|
memset((char *)osc, 0, AMT);
|
|
|
|
while (1) {
|
|
if (kvm_read(kd, addr, (char *)sc, AMT) != AMT)
|
|
errx(1, "kvm_read: %s", kvm_geterr(kd));
|
|
|
|
(void)signal(SIGALRM, catchalarm);
|
|
signalled = 0;
|
|
(void)alarm(interval);
|
|
|
|
if ((line % 20) == 0) {
|
|
(void)printf("%8.8s %6.6s %6.6s %6.6s %6.6s",
|
|
"IN", "PACK", "COMP", "UNCOMP", "ERR");
|
|
if (vflag)
|
|
printf(" %6.6s %6.6s", "TOSS", "IP");
|
|
(void)printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
|
|
"OUT", "PACK", "COMP", "UNCOMP", "IP");
|
|
if (vflag)
|
|
(void)printf(" %6.6s %6.6s", "SEARCH", "MISS");
|
|
(void)putchar('\n');
|
|
}
|
|
(void)printf("%8llu %6ld %6u %6u %6u",
|
|
(unsigned long long)V(sc_if.if_ibytes),
|
|
(long)V(sc_if.if_ipackets),
|
|
V(sc_comp.sls_compressedin),
|
|
V(sc_comp.sls_uncompressedin),
|
|
V(sc_comp.sls_errorin));
|
|
if (vflag)
|
|
(void)printf(" %6u %6llu",
|
|
V(sc_comp.sls_tossed),
|
|
(unsigned long long)(V(sc_if.if_ipackets) -
|
|
V(sc_comp.sls_compressedin) -
|
|
V(sc_comp.sls_uncompressedin) -
|
|
V(sc_comp.sls_errorin)));
|
|
(void)printf(" | %8llu %6llu %6u %6u %6llu",
|
|
(unsigned long long)V(sc_if.if_obytes),
|
|
(unsigned long long)V(sc_if.if_opackets),
|
|
V(sc_comp.sls_compressed),
|
|
V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
|
|
(unsigned long long)(V(sc_if.if_opackets) -
|
|
V(sc_comp.sls_packets)));
|
|
if (vflag)
|
|
(void)printf(" %6u %6u",
|
|
V(sc_comp.sls_searches),
|
|
V(sc_comp.sls_misses));
|
|
|
|
(void)putchar('\n');
|
|
fflush(stdout);
|
|
line++;
|
|
oldmask = sigblock(sigmask(SIGALRM));
|
|
if (!signalled)
|
|
sigpause(0);
|
|
sigsetmask(oldmask);
|
|
signalled = 0;
|
|
(void)alarm(interval);
|
|
memmove((char *)osc, (char *)sc, AMT);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called if an interval expires before sidewaysintpr has completed a loop.
|
|
* Sets a flag to not wait for the alarm.
|
|
*/
|
|
void
|
|
catchalarm(dummy)
|
|
int dummy;
|
|
{
|
|
|
|
signalled = 1;
|
|
}
|