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/* $OpenBSD: slstats.c,v 1.8 1998/03/19 07:32:08 deraadt Exp $ */
/* $NetBSD: slstats.c,v 1.6.6.1 1996/06/07 01:42:30 thorpej Exp $ */
/*
* print serial line IP statistics:
* slstats [-i interval] [-v] [interface] [system [core]]
*
* Copyright (c) 1989, 1990, 1991, 1992 Regents of the University of
* California. All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Van Jacobson (van@ee.lbl.gov), Dec 31, 1989:
* - Initial distribution.
*/
#ifndef lint
static char rcsid[] = "$OpenBSD: slstats.c,v 1.8 1998/03/19 07:32:08 deraadt 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 <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <paths.h>
#include <nlist.h>
#include <string.h>
#include <unistd.h>
struct nlist nl[] = {
#define N_SOFTC 0
{ "_sl_softc" },
"",
};
extern char *__progname; /* from crt0.o */
char *kernel; /* kernel for namelist */
char *kmemf; /* memory file */
kvm_t *kd;
int vflag;
unsigned interval = 5;
int unit;
void catchalarm __P((void));
void intpr __P((void));
void usage __P((void));
int
main(argc, argv)
int argc;
char *argv[];
{
char errbuf[_POSIX2_LINE_MAX];
int ch;
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(*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 so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (kmemf != NULL || kernel != NULL) {
setegid(getgid());
setgid(getgid());
}
memset(errbuf, 0, sizeof(errbuf));
if ((kd = kvm_openfiles(kernel, kmemf, NULL, O_RDONLY, errbuf)) == NULL)
errx(1, "can't open kvm: %s", errbuf);
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()
{
fprintf(stderr, "usage: %s [-M core] [-N system] [-i interval] %s",
__progname, "[-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()
{
register 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);
bzero((char *)osc, AMT);
while (1) {
if (kvm_read(kd, addr, (char *)sc, AMT) != AMT)
errx(1, "kvm_read: %s", kvm_geterr(kd));
(void)signal(SIGALRM, (void (*)())catchalarm);
signalled = 0;
(void)alarm(interval);
if ((line % 20) == 0) {
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");
printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
"OUT", "PACK", "COMP", "UNCOMP", "IP");
if (vflag)
printf(" %6.6s %6.6s", "SEARCH", "MISS");
putchar('\n');
}
printf("%8u %6d %6u %6u %6u",
V(sc_if.if_ibytes),
V(sc_if.if_ipackets),
V(sc_comp.sls_compressedin),
V(sc_comp.sls_uncompressedin),
V(sc_comp.sls_errorin));
if (vflag)
printf(" %6u %6u",
V(sc_comp.sls_tossed),
V(sc_if.if_ipackets) -
V(sc_comp.sls_compressedin) -
V(sc_comp.sls_uncompressedin) -
V(sc_comp.sls_errorin));
printf(" | %8u %6d %6u %6u %6u",
V(sc_if.if_obytes),
V(sc_if.if_opackets),
V(sc_comp.sls_compressed),
V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
V(sc_if.if_opackets) - V(sc_comp.sls_packets));
if (vflag)
printf(" %6u %6u",
V(sc_comp.sls_searches),
V(sc_comp.sls_misses));
putchar('\n');
fflush(stdout);
line++;
oldmask = sigblock(sigmask(SIGALRM));
if (! signalled) {
sigpause(0);
}
sigsetmask(oldmask);
signalled = 0;
(void)alarm(interval);
bcopy((char *)sc, (char *)osc, AMT);
}
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
void
catchalarm()
{
signalled = 1;
}
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