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1.34 ! itojun 1: /* $OpenBSD: if.c,v 1.33 2003/02/01 01:51:31 deraadt Exp $ */
1.6 deraadt 2: /* $NetBSD: if.c,v 1.16.4.2 1996/06/07 21:46:46 thorpej Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94";
40: #else
1.34 ! itojun 41: static char *rcsid = "$OpenBSD: if.c,v 1.33 2003/02/01 01:51:31 deraadt Exp $";
1.1 deraadt 42: #endif
43: #endif /* not lint */
44:
45: #include <sys/types.h>
46: #include <sys/protosw.h>
47: #include <sys/socket.h>
48:
49: #include <net/if.h>
50: #include <net/if_dl.h>
1.5 deraadt 51: #include <net/if_types.h>
1.1 deraadt 52: #include <netinet/in.h>
53: #include <netinet/in_var.h>
1.11 millert 54: #include <netinet/if_ether.h>
1.1 deraadt 55: #include <netns/ns.h>
56: #include <netns/ns_if.h>
1.8 mickey 57: #include <netipx/ipx.h>
58: #include <netipx/ipx_if.h>
1.1 deraadt 59: #include <netiso/iso.h>
60: #include <netiso/iso_var.h>
61: #include <arpa/inet.h>
62:
1.13 millert 63: #include <limits.h>
1.1 deraadt 64: #include <signal.h>
65: #include <stdio.h>
66: #include <string.h>
67: #include <unistd.h>
68:
69: #include "netstat.h"
70:
71: #define YES 1
72: #define NO 0
73:
1.29 millert 74: static void sidewaysintpr(u_int, u_long);
75: static void catchalarm(int);
1.1 deraadt 76:
77: /*
78: * Print a description of the network interfaces.
1.3 deraadt 79: * NOTE: ifnetaddr is the location of the kernel global "ifnet",
80: * which is a TAILQ_HEAD.
1.1 deraadt 81: */
82: void
1.33 deraadt 83: intpr(int interval, u_long ifnetaddr)
1.1 deraadt 84: {
85: struct ifnet ifnet;
86: union {
87: struct ifaddr ifa;
88: struct in_ifaddr in;
1.18 itojun 89: #ifdef INET6
90: struct in6_ifaddr in6;
91: #endif
1.1 deraadt 92: struct ns_ifaddr ns;
1.8 mickey 93: struct ipx_ifaddr ipx;
1.1 deraadt 94: struct iso_ifaddr iso;
95: } ifaddr;
1.33 deraadt 96: u_long total, ifaddraddr;
1.1 deraadt 97: struct sockaddr *sa;
1.3 deraadt 98: struct ifnet_head ifhead; /* TAILQ_HEAD */
99: char name[IFNAMSIZ];
1.1 deraadt 100:
101: if (ifnetaddr == 0) {
102: printf("ifnet: symbol not defined\n");
103: return;
104: }
105: if (interval) {
106: sidewaysintpr((unsigned)interval, ifnetaddr);
107: return;
108: }
1.3 deraadt 109:
110: /*
111: * Find the pointer to the first ifnet structure. Replace
112: * the pointer to the TAILQ_HEAD with the actual pointer
113: * to the first list element.
114: */
115: if (kread(ifnetaddr, (char *)&ifhead, sizeof ifhead))
1.1 deraadt 116: return;
1.3 deraadt 117: ifnetaddr = (u_long)ifhead.tqh_first;
118:
1.22 camield 119: printf("%-7.7s %-5.5s %-11.11s %-17.17s ",
1.33 deraadt 120: "Name", "Mtu", "Network", "Address");
1.22 camield 121: if (bflag)
122: printf("%10.10s %10.10s", "Ibytes", "Obytes");
123: else
124: printf("%8.8s %5.5s %8.8s %5.5s %5.5s",
125: "Ipkts", "Ierrs", "Opkts", "Oerrs", "Colls");
1.1 deraadt 126: if (tflag)
127: printf(" %s", "Time");
128: if (dflag)
129: printf(" %s", "Drop");
130: putchar('\n');
131: ifaddraddr = 0;
132: while (ifnetaddr || ifaddraddr) {
133: struct sockaddr_in *sin;
1.18 itojun 134: #ifdef INET6
135: struct sockaddr_in6 *sin6;
136: #endif
1.27 mpech 137: char *cp;
1.1 deraadt 138: int n, m;
139:
140: if (ifaddraddr == 0) {
1.3 deraadt 141: if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
1.1 deraadt 142: return;
1.3 deraadt 143: bcopy(ifnet.if_xname, name, IFNAMSIZ);
144: name[IFNAMSIZ - 1] = '\0'; /* sanity */
1.1 deraadt 145: ifnetaddr = (u_long)ifnet.if_list.tqe_next;
1.3 deraadt 146: if (interface != 0 && strcmp(name, interface) != 0)
1.1 deraadt 147: continue;
1.10 millert 148: cp = strchr(name, '\0');
1.1 deraadt 149: if ((ifnet.if_flags & IFF_UP) == 0)
150: *cp++ = '*';
151: *cp = '\0';
152: ifaddraddr = (u_long)ifnet.if_addrlist.tqh_first;
153: }
1.25 brian 154:
155: if (qflag) {
156: total = ifnet.if_ibytes + ifnet.if_obytes +
157: ifnet.if_ipackets + ifnet.if_ierrors +
158: ifnet.if_opackets + ifnet.if_oerrors +
159: ifnet.if_collisions;
160: if (tflag)
161: total += ifnet.if_timer;
162: if (dflag)
163: total += ifnet.if_snd.ifq_drops;
164: if (total == 0) {
165: ifaddraddr = 0;
166: continue;
167: }
168: }
169:
1.16 mickey 170: printf("%-7.7s %-5ld ", name, ifnet.if_mtu);
1.1 deraadt 171: if (ifaddraddr == 0) {
172: printf("%-11.11s ", "none");
173: printf("%-15.15s ", "none");
174: } else {
175: if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) {
176: ifaddraddr = 0;
177: continue;
178: }
179: #define CP(x) ((char *)(x))
180: cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
181: CP(&ifaddr); sa = (struct sockaddr *)cp;
182: switch (sa->sa_family) {
183: case AF_UNSPEC:
184: printf("%-11.11s ", "none");
185: printf("%-17.17s ", "none");
186: break;
187: case AF_INET:
188: sin = (struct sockaddr_in *)sa;
189: #ifdef notdef
190: /* can't use inet_makeaddr because kernel
191: * keeps nets unshifted.
192: */
193: in = inet_makeaddr(ifaddr.in.ia_subnet,
1.30 deraadt 194: INADDR_ANY);
1.20 itojun 195: cp = netname(in.s_addr,
1.30 deraadt 196: ifaddr.in.ia_subnetmask);
1.1 deraadt 197: #else
1.20 itojun 198: cp = netname(ifaddr.in.ia_subnet,
199: ifaddr.in.ia_subnetmask);
1.1 deraadt 200: #endif
1.20 itojun 201: if (vflag)
202: n = strlen(cp) < 11 ? 11 : strlen(cp);
203: else
204: n = 11;
205: printf("%-*.*s ", n, n, cp);
206: cp = routename(sin->sin_addr.s_addr);
207: if (vflag)
208: n = strlen(cp) < 17 ? 17 : strlen(cp);
209: else
210: n = 17;
211: printf("%-*.*s ", n, n, cp);
1.1 deraadt 212:
213: if (aflag) {
214: u_long multiaddr;
215: struct in_multi inm;
1.28 mickey 216:
1.1 deraadt 217: multiaddr = (u_long)ifaddr.in.ia_multiaddrs.lh_first;
218: while (multiaddr != 0) {
219: kread(multiaddr, (char *)&inm,
220: sizeof inm);
1.19 itojun 221: printf("\n%25s %-17.17s ", "",
1.1 deraadt 222: routename(inm.inm_addr.s_addr));
223: multiaddr = (u_long)inm.inm_list.le_next;
224: }
1.8 mickey 225: }
226: break;
1.18 itojun 227: #ifdef INET6
228: case AF_INET6:
229: sin6 = (struct sockaddr_in6 *)sa;
1.34 ! itojun 230: #ifdef __KAME__
1.20 itojun 231: if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
232: sin6->sin6_scope_id =
1.30 deraadt 233: ntohs(*(u_int16_t *)
234: &sin6->sin6_addr.s6_addr[2]);
1.20 itojun 235: sin6->sin6_addr.s6_addr[2] = 0;
236: sin6->sin6_addr.s6_addr[3] = 0;
237: }
238: #endif
239: cp = netname6(&ifaddr.in6.ia_addr,
1.30 deraadt 240: &ifaddr.in6.ia_prefixmask.sin6_addr);
1.20 itojun 241: if (vflag)
242: n = strlen(cp) < 11 ? 11 : strlen(cp);
243: else
244: n = 11;
245: printf("%-*.*s ", n, n, cp);
246: cp = routename6(sin6);
247: if (vflag)
248: n = strlen(cp) < 17 ? 17 : strlen(cp);
249: else
250: n = 17;
251: printf("%-*.*s ", n, n, cp);
1.19 itojun 252: if (aflag) {
253: u_long multiaddr;
254: struct in6_multi inm;
1.31 itojun 255: struct sockaddr_in6 m6;
1.28 mickey 256:
1.19 itojun 257: multiaddr = (u_long)ifaddr.in6.ia6_multiaddrs.lh_first;
258: while (multiaddr != 0) {
259: kread(multiaddr, (char *)&inm,
260: sizeof inm);
1.31 itojun 261: memset(&m6, 0, sizeof(m6));
262: m6.sin6_len = sizeof(struct sockaddr_in6);
263: m6.sin6_family = AF_INET6;
264: m6.sin6_addr = inm.in6m_addr;
1.34 ! itojun 265: #ifdef __KAME__
1.32 itojun 266: if (IN6_IS_ADDR_MC_LINKLOCAL(&m6.sin6_addr)) {
1.31 itojun 267: m6.sin6_scope_id =
268: ntohs(*(u_int16_t *)
269: &m6.sin6_addr.s6_addr[2]);
270: m6.sin6_addr.s6_addr[2] = 0;
271: m6.sin6_addr.s6_addr[3] = 0;
272: }
273: #endif
274: cp = routename6(&m6);
1.19 itojun 275: if (vflag)
1.31 itojun 276: n = strlen(cp) < 17 ? 17 : strlen(cp);
1.19 itojun 277: else
278: n = 17;
279: printf("\n%25s %-*.*s ", "",
1.31 itojun 280: n, n, cp);
1.19 itojun 281: multiaddr = (u_long)inm.in6m_entry.le_next;
282: }
283: }
1.18 itojun 284: break;
285: #endif
1.8 mickey 286: case AF_IPX:
287: {
288: struct sockaddr_ipx *sipx =
289: (struct sockaddr_ipx *)sa;
290: u_long net;
291: char netnum[8];
292:
1.17 deraadt 293: *(union ipx_net *)&net = sipx->sipx_addr.ipx_net;
294: snprintf(netnum, sizeof netnum, "%xH",
295: ntohl(net));
1.8 mickey 296: upHex(netnum);
297: printf("ipx:%-8s", netnum);
298: printf("%-17s ",
299: ipx_phost((struct sockaddr *)sipx));
1.1 deraadt 300: }
1.15 denny 301: break;
302: case AF_APPLETALK:
303: printf("atlk:%-12s",atalk_print(sa,0x10) );
304: printf("%-12s ",atalk_print(sa,0x0b) );
1.1 deraadt 305: break;
306: case AF_NS:
307: {
308: struct sockaddr_ns *sns =
309: (struct sockaddr_ns *)sa;
310: u_long net;
311: char netnum[8];
312:
1.17 deraadt 313: *(union ns_net *)&net = sns->sns_addr.x_net;
314: snprintf(netnum, sizeof netnum, "%xH",
315: ntohl(net));
1.1 deraadt 316: upHex(netnum);
317: printf("ns:%-8s ", netnum);
318: printf("%-17s ",
319: ns_phost((struct sockaddr *)sns));
320: }
321: break;
322: case AF_LINK:
323: {
324: struct sockaddr_dl *sdl =
325: (struct sockaddr_dl *)sa;
1.5 deraadt 326: m = printf("%-11.11s ", "<Link>");
327: if (sdl->sdl_type == IFT_ETHER ||
1.23 fgsch 328: sdl->sdl_type == IFT_FDDI ||
329: sdl->sdl_type == IFT_ISO88025)
1.5 deraadt 330: printf("%-17.17s ",
1.11 millert 331: ether_ntoa((struct ether_addr *)LLADDR(sdl)));
1.5 deraadt 332: else {
333: cp = (char *)LLADDR(sdl);
334: n = sdl->sdl_alen;
335: goto hexprint;
336: }
1.1 deraadt 337: }
1.5 deraadt 338: break;
1.1 deraadt 339: default:
340: m = printf("(%d)", sa->sa_family);
341: for (cp = sa->sa_len + (char *)sa;
342: --cp > sa->sa_data && (*cp == 0);) {}
343: n = cp - sa->sa_data + 1;
344: cp = sa->sa_data;
345: hexprint:
346: while (--n >= 0)
347: m += printf("%x%c", *cp++ & 0xff,
348: n > 0 ? '.' : ' ');
349: m = 30 - m;
350: while (m-- > 0)
351: putchar(' ');
352: break;
353: }
354: ifaddraddr = (u_long)ifaddr.ifa.ifa_list.tqe_next;
355: }
1.22 camield 356: if (bflag)
357: printf("%10lu %10lu",
358: ifnet.if_ibytes, ifnet.if_obytes);
359: else
360: printf("%8lu %5lu %8lu %5lu %5lu",
361: ifnet.if_ipackets, ifnet.if_ierrors,
362: ifnet.if_opackets, ifnet.if_oerrors,
363: ifnet.if_collisions);
1.1 deraadt 364: if (tflag)
1.22 camield 365: printf(" %4d", ifnet.if_timer);
1.1 deraadt 366: if (dflag)
1.22 camield 367: printf(" %4d", ifnet.if_snd.ifq_drops);
1.1 deraadt 368: putchar('\n');
369: }
370: }
371:
1.4 deraadt 372: #define MAXIF 100
1.1 deraadt 373: struct iftot {
1.3 deraadt 374: char ift_name[IFNAMSIZ]; /* interface name */
1.1 deraadt 375: int ift_ip; /* input packets */
1.22 camield 376: int ift_ib; /* input bytes */
1.1 deraadt 377: int ift_ie; /* input errors */
378: int ift_op; /* output packets */
1.22 camield 379: int ift_ob; /* output bytes */
1.1 deraadt 380: int ift_oe; /* output errors */
381: int ift_co; /* collisions */
382: int ift_dr; /* drops */
383: } iftot[MAXIF];
384:
1.26 millert 385: volatile sig_atomic_t signalled; /* set if alarm goes off "early" */
1.1 deraadt 386:
387: /*
388: * Print a running summary of interface statistics.
389: * Repeat display every interval seconds, showing statistics
390: * collected over that interval. Assumes that interval is non-zero.
391: * First line printed at top of screen is always cumulative.
392: */
393: static void
1.33 deraadt 394: sidewaysintpr(unsigned int interval, u_long off)
1.1 deraadt 395: {
396: struct ifnet ifnet;
397: u_long firstifnet;
1.27 mpech 398: struct iftot *ip, *total;
399: int line;
1.1 deraadt 400: struct iftot *lastif, *sum, *interesting;
1.3 deraadt 401: struct ifnet_head ifhead; /* TAILQ_HEAD */
1.26 millert 402: sigset_t emptyset;
1.1 deraadt 403:
1.3 deraadt 404: /*
405: * Find the pointer to the first ifnet structure. Replace
406: * the pointer to the TAILQ_HEAD with the actual pointer
407: * to the first list element.
408: */
409: if (kread(off, (char *)&ifhead, sizeof ifhead))
1.1 deraadt 410: return;
1.3 deraadt 411: firstifnet = (u_long)ifhead.tqh_first;
412:
1.1 deraadt 413: lastif = iftot;
414: sum = iftot + MAXIF - 1;
415: total = sum - 1;
1.4 deraadt 416: interesting = (interface == NULL) ? iftot : NULL;
1.1 deraadt 417: for (off = firstifnet, ip = iftot; off;) {
418: if (kread(off, (char *)&ifnet, sizeof ifnet))
419: break;
1.6 deraadt 420: bzero(ip->ift_name, sizeof(ip->ift_name));
1.22 camield 421: snprintf(ip->ift_name, IFNAMSIZ, "%s", ifnet.if_xname);
1.6 deraadt 422: if (interface && strcmp(ifnet.if_xname, interface) == 0)
1.1 deraadt 423: interesting = ip;
424: ip++;
425: if (ip >= iftot + MAXIF - 2)
426: break;
427: off = (u_long)ifnet.if_list.tqe_next;
1.4 deraadt 428: }
429: if (interesting == NULL) {
430: fprintf(stderr, "%s: %s: unknown interface\n",
431: __progname, interface);
432: exit(1);
1.1 deraadt 433: }
434: lastif = ip;
435:
436: (void)signal(SIGALRM, catchalarm);
437: signalled = NO;
438: (void)alarm(interval);
439: banner:
1.22 camield 440: if (bflag)
441: printf("%7.7s in %8.8s %6.6s out %5.5s",
442: interesting->ift_name, " ",
443: interesting->ift_name, " ");
444: else
445: printf("%5.5s in %5.5s%5.5s out %5.5s %5.5s",
446: interesting->ift_name, " ",
447: interesting->ift_name, " ", " ");
448: if (dflag)
449: printf(" %5.5s", " ");
1.1 deraadt 450: if (lastif - iftot > 0) {
1.22 camield 451: if (bflag)
452: printf(" %7.7s in %8.8s %6.6s out %5.5s",
453: "total", " ", "total", " ");
454: else
455: printf(" %5.5s in %5.5s%5.5s out %5.5s %5.5s",
456: "total", " ", "total", " ", " ");
1.1 deraadt 457: if (dflag)
1.22 camield 458: printf(" %5.5s", " ");
1.1 deraadt 459: }
460: for (ip = iftot; ip < iftot + MAXIF; ip++) {
461: ip->ift_ip = 0;
1.22 camield 462: ip->ift_ib = 0;
1.1 deraadt 463: ip->ift_ie = 0;
464: ip->ift_op = 0;
1.22 camield 465: ip->ift_ob = 0;
1.1 deraadt 466: ip->ift_oe = 0;
467: ip->ift_co = 0;
468: ip->ift_dr = 0;
469: }
470: putchar('\n');
1.22 camield 471: if (bflag)
472: printf("%10.10s %8.8s %10.10s %5.5s",
473: "bytes", " ", "bytes", " ");
474: else
475: printf("%8.8s %5.5s %8.8s %5.5s %5.5s",
476: "packets", "errs", "packets", "errs", "colls");
1.1 deraadt 477: if (dflag)
478: printf(" %5.5s", "drops");
1.22 camield 479: if (lastif - iftot > 0) {
480: if (bflag)
481: printf(" %10.10s %8.8s %10.10s %5.5s",
482: "bytes", " ", "bytes", " ");
483: else
484: printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
485: "packets", "errs", "packets", "errs", "colls");
486: if (dflag)
487: printf(" %5.5s", "drops");
488: }
1.1 deraadt 489: putchar('\n');
490: fflush(stdout);
491: line = 0;
492: loop:
493: sum->ift_ip = 0;
1.22 camield 494: sum->ift_ib = 0;
1.1 deraadt 495: sum->ift_ie = 0;
496: sum->ift_op = 0;
1.22 camield 497: sum->ift_ob = 0;
1.1 deraadt 498: sum->ift_oe = 0;
499: sum->ift_co = 0;
500: sum->ift_dr = 0;
501: for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
502: if (kread(off, (char *)&ifnet, sizeof ifnet)) {
503: off = 0;
504: continue;
505: }
506: if (ip == interesting) {
1.22 camield 507: if (bflag)
508: printf("%10lu %8.8s %10lu %5.5s",
509: ifnet.if_ibytes - ip->ift_ib, " ",
510: ifnet.if_obytes - ip->ift_ob, " ");
511: else
512: printf("%8lu %5lu %8lu %5lu %5lu",
513: ifnet.if_ipackets - ip->ift_ip,
514: ifnet.if_ierrors - ip->ift_ie,
515: ifnet.if_opackets - ip->ift_op,
516: ifnet.if_oerrors - ip->ift_oe,
517: ifnet.if_collisions - ip->ift_co);
1.1 deraadt 518: if (dflag)
519: printf(" %5d",
520: ifnet.if_snd.ifq_drops - ip->ift_dr);
521: }
522: ip->ift_ip = ifnet.if_ipackets;
1.22 camield 523: ip->ift_ib = ifnet.if_ibytes;
1.1 deraadt 524: ip->ift_ie = ifnet.if_ierrors;
525: ip->ift_op = ifnet.if_opackets;
1.22 camield 526: ip->ift_ob = ifnet.if_obytes;
1.1 deraadt 527: ip->ift_oe = ifnet.if_oerrors;
528: ip->ift_co = ifnet.if_collisions;
529: ip->ift_dr = ifnet.if_snd.ifq_drops;
530: sum->ift_ip += ip->ift_ip;
1.22 camield 531: sum->ift_ib += ip->ift_ib;
1.1 deraadt 532: sum->ift_ie += ip->ift_ie;
533: sum->ift_op += ip->ift_op;
1.22 camield 534: sum->ift_ob += ip->ift_ob;
1.1 deraadt 535: sum->ift_oe += ip->ift_oe;
536: sum->ift_co += ip->ift_co;
537: sum->ift_dr += ip->ift_dr;
538: off = (u_long)ifnet.if_list.tqe_next;
539: }
540: if (lastif - iftot > 0) {
1.22 camield 541: if (bflag)
542: printf(" %10lu %8.8s %10lu %5.5s",
1.24 pvalchev 543: (unsigned long)sum->ift_ib - total->ift_ib, " ",
544: (unsigned long)sum->ift_ob - total->ift_ob, " ");
1.22 camield 545: else
546: printf(" %8lu %5lu %8lu %5lu %5lu",
1.24 pvalchev 547: (unsigned long)sum->ift_ip - total->ift_ip,
548: (unsigned long)sum->ift_ie - total->ift_ie,
549: (unsigned long)sum->ift_op - total->ift_op,
550: (unsigned long)sum->ift_oe - total->ift_oe,
551: (unsigned long)sum->ift_co - total->ift_co);
1.1 deraadt 552: if (dflag)
553: printf(" %5d", sum->ift_dr - total->ift_dr);
554: }
555: *total = *sum;
556: putchar('\n');
557: fflush(stdout);
558: line++;
1.26 millert 559: sigemptyset(&emptyset);
560: if (!signalled)
561: sigsuspend(&emptyset);
1.1 deraadt 562: signalled = NO;
563: (void)alarm(interval);
564: if (line == 21)
565: goto banner;
566: goto loop;
567: /*NOTREACHED*/
568: }
569:
570: /*
571: * Called if an interval expires before sidewaysintpr has completed a loop.
572: * Sets a flag to not wait for the alarm.
573: */
574: static void
1.33 deraadt 575: catchalarm(int signo)
1.1 deraadt 576: {
577: signalled = YES;
578: }