5020b5df96
- `slstat' with no args dumped core. - `slstat unit' always failed with a "sysctl linkspecific" error. - the usage message was nonstandard. Fixed old bugs: - missing prototypes, Wformat errors, and other lint.
246 lines
5.9 KiB
C
246 lines
5.9 KiB
C
/*
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* print serial line IP statistics:
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* slstat [-i interval] [-v] [interface]
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*
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* Copyright (c) 1989, 1990, 1991, 1992 Regents of the University of
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* California. All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Van Jacobson (van@ee.lbl.gov), Dec 31, 1989:
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* - Initial distribution.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$Id: slstat.c,v 1.6 1996/10/11 18:47:10 wollman Exp $";
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#endif
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#include <sys/param.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <signal.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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#define INET
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#include <net/if.h>
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#include <net/if_mib.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <net/slcompress.h>
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#include <net/if_slvar.h>
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static void usage __P((const char *argv0));
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static void intpr __P((void));
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static void catchalarm __P((int));
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#define INTERFACE_PREFIX "sl%d"
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char interface[IFNAMSIZ];
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int rflag;
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int vflag;
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unsigned interval = 5;
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int unit;
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int name[6];
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int c, i;
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size_t len;
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int maxifno;
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int indx;
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struct ifmibdata ifmd;
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while ((c = getopt(argc, argv, "vri:")) != -1) {
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switch(c) {
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case 'v':
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++vflag;
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break;
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case 'r':
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++rflag;
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break;
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case 'i':
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interval = atoi(optarg);
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if (interval <= 0)
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usage(argv[0]);
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break;
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default:
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usage(argv[0]);
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}
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}
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if (optind >= argc)
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sprintf(interface, INTERFACE_PREFIX, unit);
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else if (isdigit(argv[optind][0])) {
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unit = atoi(argv[optind]);
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if (unit < 0)
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usage(argv[0]);
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sprintf(interface, INTERFACE_PREFIX, unit);
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} else if (strncmp(argv[optind], "sl", 2) == 0
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&& isdigit(argv[optind][2])
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&& sscanf(argv[optind], "sl%d", &unit) == 1) {
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strncpy(interface, argv[optind], IFNAMSIZ);
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} else
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usage(argv[0]);
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name[0] = CTL_NET;
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name[1] = PF_LINK;
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name[2] = NETLINK_GENERIC;
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name[3] = IFMIB_SYSTEM;
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name[4] = IFMIB_IFCOUNT;
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len = sizeof maxifno;
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if (sysctl(name, 5, &maxifno, &len, 0, 0) < 0)
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err(1, "sysctl net.link.generic.system.ifcount");
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name[3] = IFMIB_IFDATA;
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name[5] = IFDATA_GENERAL;
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len = sizeof ifmd;
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for (i = 1; ; i++) {
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name[4] = i;
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if (sysctl(name, 6, &ifmd, &len, 0, 0) < 0)
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err(1, "sysctl");
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if (strncmp(interface, ifmd.ifmd_name, IFNAMSIZ) == 0
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&& ifmd.ifmd_data.ifi_type == IFT_SLIP) {
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indx = i;
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break;
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}
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if (i >= maxifno)
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errx(1, "interface %s does not exist", interface);
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}
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name[4] = indx;
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name[5] = IFDATA_LINKSPECIFIC;
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intpr();
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exit(0);
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}
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#define V(offset) ((line % 20)? ((sc->offset - osc->offset) / \
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(rflag ? interval : 1)) : sc->offset)
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#define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
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static void
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usage(argv0)
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const char *argv0;
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{
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fprintf(stderr, "usage: %s [-i interval] [-vr] [unit]\n", argv0);
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exit(1);
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}
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u_char signalled; /* set if alarm goes off "early" */
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/*
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* Print a running summary of interface statistics.
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* Repeat display every interval seconds, showing statistics
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* collected over that interval. Assumes that interval is non-zero.
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* First line printed at top of screen is always cumulative.
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*/
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static void
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intpr()
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{
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register int line = 0;
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int oldmask;
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struct sl_softc *sc, *osc;
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size_t len;
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sc = (struct sl_softc *)malloc(AMT);
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osc = (struct sl_softc *)malloc(AMT);
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bzero((char *)osc, AMT);
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len = AMT;
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while (1) {
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if (sysctl(name, 6, sc, &len, 0, 0) < 0 &&
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(errno != ENOMEM || len != AMT))
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err(1, "sysctl linkspecific");
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(void)signal(SIGALRM, catchalarm);
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signalled = 0;
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(void)alarm(interval);
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if ((line % 20) == 0) {
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printf("%8.8s %6.6s %6.6s %6.6s %6.6s",
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"in", "pack", "comp", "uncomp", "unknwn");
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if (vflag)
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printf(" %6.6s %6.6s %6.6s",
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"toss", "other", "err");
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printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
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"out", "pack", "comp", "uncomp", "other");
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if (vflag)
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printf(" %6.6s %6.6s %6.6s %6.6s",
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"search", "miss", "err", "coll");
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putchar('\n');
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}
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printf("%8lu %6ld %6u %6u %6u",
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V(sc_if.if_ibytes),
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V(sc_if.if_ipackets),
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V(sc_comp.sls_compressedin),
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V(sc_comp.sls_uncompressedin),
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V(sc_comp.sls_errorin));
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if (vflag)
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printf(" %6u %6lu %6lu",
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V(sc_comp.sls_tossed),
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V(sc_if.if_ipackets) -
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V(sc_comp.sls_compressedin) -
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V(sc_comp.sls_uncompressedin) -
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V(sc_comp.sls_errorin),
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V(sc_if.if_ierrors));
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printf(" | %8lu %6ld %6u %6u %6lu",
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V(sc_if.if_obytes) / (rflag ? interval : 1),
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V(sc_if.if_opackets),
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V(sc_comp.sls_compressed),
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V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
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V(sc_if.if_opackets) - V(sc_comp.sls_packets));
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if (vflag)
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printf(" %6u %6u %6lu %6lu",
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V(sc_comp.sls_searches),
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V(sc_comp.sls_misses),
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V(sc_if.if_oerrors),
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V(sc_if.if_collisions));
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putchar('\n');
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fflush(stdout);
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line++;
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oldmask = sigblock(sigmask(SIGALRM));
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if (! signalled) {
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sigpause(0);
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}
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sigsetmask(oldmask);
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signalled = 0;
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(void)alarm(interval);
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bcopy((char *)sc, (char *)osc, AMT);
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}
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}
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/*
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* Called if an interval expires before sidewaysintpr has completed a loop.
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* Sets a flag to not wait for the alarm.
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*/
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static void
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catchalarm(sig)
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int sig;
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{
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signalled = 1;
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}
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