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1.43 ! jaredy 1: /* $OpenBSD: if.c,v 1.42 2005/03/13 16:05:50 mpf 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.
1.35 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94";
36: #else
1.43 ! jaredy 37: static char *rcsid = "$OpenBSD: if.c,v 1.42 2005/03/13 16:05:50 mpf Exp $";
1.1 deraadt 38: #endif
39: #endif /* not lint */
40:
41: #include <sys/types.h>
42: #include <sys/protosw.h>
43: #include <sys/socket.h>
44:
45: #include <net/if.h>
46: #include <net/if_dl.h>
1.5 deraadt 47: #include <net/if_types.h>
1.1 deraadt 48: #include <netinet/in.h>
49: #include <netinet/in_var.h>
1.11 millert 50: #include <netinet/if_ether.h>
1.1 deraadt 51: #include <netns/ns.h>
52: #include <netns/ns_if.h>
1.8 mickey 53: #include <netipx/ipx.h>
54: #include <netipx/ipx_if.h>
1.1 deraadt 55: #include <arpa/inet.h>
56:
1.13 millert 57: #include <limits.h>
1.1 deraadt 58: #include <signal.h>
59: #include <stdio.h>
1.36 david 60: #include <stdlib.h>
1.1 deraadt 61: #include <string.h>
62: #include <unistd.h>
63:
64: #include "netstat.h"
65:
66: #define YES 1
67: #define NO 0
68:
1.29 millert 69: static void sidewaysintpr(u_int, u_long);
70: static void catchalarm(int);
1.1 deraadt 71:
72: /*
73: * Print a description of the network interfaces.
1.3 deraadt 74: * NOTE: ifnetaddr is the location of the kernel global "ifnet",
75: * which is a TAILQ_HEAD.
1.1 deraadt 76: */
77: void
1.33 deraadt 78: intpr(int interval, u_long ifnetaddr)
1.1 deraadt 79: {
80: struct ifnet ifnet;
81: union {
82: struct ifaddr ifa;
83: struct in_ifaddr in;
1.18 itojun 84: #ifdef INET6
85: struct in6_ifaddr in6;
86: #endif
1.1 deraadt 87: struct ns_ifaddr ns;
1.8 mickey 88: struct ipx_ifaddr ipx;
1.1 deraadt 89: } ifaddr;
1.33 deraadt 90: u_long total, ifaddraddr;
1.1 deraadt 91: struct sockaddr *sa;
1.3 deraadt 92: struct ifnet_head ifhead; /* TAILQ_HEAD */
93: char name[IFNAMSIZ];
1.1 deraadt 94:
95: if (ifnetaddr == 0) {
96: printf("ifnet: symbol not defined\n");
97: return;
98: }
99: if (interval) {
100: sidewaysintpr((unsigned)interval, ifnetaddr);
101: return;
102: }
1.3 deraadt 103:
104: /*
105: * Find the pointer to the first ifnet structure. Replace
106: * the pointer to the TAILQ_HEAD with the actual pointer
107: * to the first list element.
108: */
1.43 ! jaredy 109: if (kread(ifnetaddr, &ifhead, sizeof ifhead))
1.1 deraadt 110: return;
1.3 deraadt 111: ifnetaddr = (u_long)ifhead.tqh_first;
112:
1.22 camield 113: printf("%-7.7s %-5.5s %-11.11s %-17.17s ",
1.33 deraadt 114: "Name", "Mtu", "Network", "Address");
1.22 camield 115: if (bflag)
116: printf("%10.10s %10.10s", "Ibytes", "Obytes");
117: else
118: printf("%8.8s %5.5s %8.8s %5.5s %5.5s",
119: "Ipkts", "Ierrs", "Opkts", "Oerrs", "Colls");
1.1 deraadt 120: if (tflag)
121: printf(" %s", "Time");
122: if (dflag)
123: printf(" %s", "Drop");
124: putchar('\n');
125: ifaddraddr = 0;
126: while (ifnetaddr || ifaddraddr) {
127: struct sockaddr_in *sin;
1.18 itojun 128: #ifdef INET6
129: struct sockaddr_in6 *sin6;
130: #endif
1.27 mpech 131: char *cp;
1.1 deraadt 132: int n, m;
133:
134: if (ifaddraddr == 0) {
1.43 ! jaredy 135: if (kread(ifnetaddr, &ifnet, sizeof ifnet))
1.1 deraadt 136: return;
1.3 deraadt 137: bcopy(ifnet.if_xname, name, IFNAMSIZ);
138: name[IFNAMSIZ - 1] = '\0'; /* sanity */
1.1 deraadt 139: ifnetaddr = (u_long)ifnet.if_list.tqe_next;
1.3 deraadt 140: if (interface != 0 && strcmp(name, interface) != 0)
1.1 deraadt 141: continue;
1.10 millert 142: cp = strchr(name, '\0');
1.1 deraadt 143: if ((ifnet.if_flags & IFF_UP) == 0)
144: *cp++ = '*';
145: *cp = '\0';
146: ifaddraddr = (u_long)ifnet.if_addrlist.tqh_first;
147: }
1.25 brian 148:
149: if (qflag) {
150: total = ifnet.if_ibytes + ifnet.if_obytes +
151: ifnet.if_ipackets + ifnet.if_ierrors +
152: ifnet.if_opackets + ifnet.if_oerrors +
153: ifnet.if_collisions;
154: if (tflag)
155: total += ifnet.if_timer;
156: if (dflag)
157: total += ifnet.if_snd.ifq_drops;
158: if (total == 0) {
159: ifaddraddr = 0;
160: continue;
161: }
162: }
163:
1.16 mickey 164: printf("%-7.7s %-5ld ", name, ifnet.if_mtu);
1.1 deraadt 165: if (ifaddraddr == 0) {
166: printf("%-11.11s ", "none");
1.37 deraadt 167: printf("%-17.17s ", "none");
1.1 deraadt 168: } else {
1.43 ! jaredy 169: if (kread(ifaddraddr, &ifaddr, sizeof ifaddr)) {
1.1 deraadt 170: ifaddraddr = 0;
171: continue;
172: }
173: #define CP(x) ((char *)(x))
174: cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
175: CP(&ifaddr); sa = (struct sockaddr *)cp;
176: switch (sa->sa_family) {
177: case AF_UNSPEC:
178: printf("%-11.11s ", "none");
179: printf("%-17.17s ", "none");
180: break;
181: case AF_INET:
182: sin = (struct sockaddr_in *)sa;
183: #ifdef notdef
184: /* can't use inet_makeaddr because kernel
185: * keeps nets unshifted.
186: */
187: in = inet_makeaddr(ifaddr.in.ia_subnet,
1.30 deraadt 188: INADDR_ANY);
1.20 itojun 189: cp = netname(in.s_addr,
1.30 deraadt 190: ifaddr.in.ia_subnetmask);
1.1 deraadt 191: #else
1.20 itojun 192: cp = netname(ifaddr.in.ia_subnet,
193: ifaddr.in.ia_subnetmask);
1.1 deraadt 194: #endif
1.20 itojun 195: if (vflag)
196: n = strlen(cp) < 11 ? 11 : strlen(cp);
197: else
198: n = 11;
199: printf("%-*.*s ", n, n, cp);
200: cp = routename(sin->sin_addr.s_addr);
201: if (vflag)
202: n = strlen(cp) < 17 ? 17 : strlen(cp);
203: else
204: n = 17;
205: printf("%-*.*s ", n, n, cp);
1.1 deraadt 206:
207: if (aflag) {
208: u_long multiaddr;
209: struct in_multi inm;
1.28 mickey 210:
1.1 deraadt 211: multiaddr = (u_long)ifaddr.in.ia_multiaddrs.lh_first;
212: while (multiaddr != 0) {
1.43 ! jaredy 213: kread(multiaddr, &inm, sizeof inm);
1.19 itojun 214: printf("\n%25s %-17.17s ", "",
1.1 deraadt 215: routename(inm.inm_addr.s_addr));
216: multiaddr = (u_long)inm.inm_list.le_next;
217: }
1.8 mickey 218: }
219: break;
1.18 itojun 220: #ifdef INET6
221: case AF_INET6:
222: sin6 = (struct sockaddr_in6 *)sa;
1.34 itojun 223: #ifdef __KAME__
1.20 itojun 224: if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
225: sin6->sin6_scope_id =
1.30 deraadt 226: ntohs(*(u_int16_t *)
1.38 deraadt 227: &sin6->sin6_addr.s6_addr[2]);
1.20 itojun 228: sin6->sin6_addr.s6_addr[2] = 0;
229: sin6->sin6_addr.s6_addr[3] = 0;
230: }
231: #endif
232: cp = netname6(&ifaddr.in6.ia_addr,
1.30 deraadt 233: &ifaddr.in6.ia_prefixmask.sin6_addr);
1.20 itojun 234: if (vflag)
235: n = strlen(cp) < 11 ? 11 : strlen(cp);
236: else
237: n = 11;
238: printf("%-*.*s ", n, n, cp);
239: cp = routename6(sin6);
240: if (vflag)
241: n = strlen(cp) < 17 ? 17 : strlen(cp);
242: else
243: n = 17;
244: printf("%-*.*s ", n, n, cp);
1.19 itojun 245: if (aflag) {
246: u_long multiaddr;
247: struct in6_multi inm;
1.31 itojun 248: struct sockaddr_in6 m6;
1.28 mickey 249:
1.19 itojun 250: multiaddr = (u_long)ifaddr.in6.ia6_multiaddrs.lh_first;
251: while (multiaddr != 0) {
1.43 ! jaredy 252: kread(multiaddr, &inm, sizeof inm);
1.31 itojun 253: memset(&m6, 0, sizeof(m6));
254: m6.sin6_len = sizeof(struct sockaddr_in6);
255: m6.sin6_family = AF_INET6;
256: m6.sin6_addr = inm.in6m_addr;
1.34 itojun 257: #ifdef __KAME__
1.32 itojun 258: if (IN6_IS_ADDR_MC_LINKLOCAL(&m6.sin6_addr)) {
1.31 itojun 259: m6.sin6_scope_id =
260: ntohs(*(u_int16_t *)
1.38 deraadt 261: &m6.sin6_addr.s6_addr[2]);
1.31 itojun 262: m6.sin6_addr.s6_addr[2] = 0;
263: m6.sin6_addr.s6_addr[3] = 0;
264: }
265: #endif
266: cp = routename6(&m6);
1.19 itojun 267: if (vflag)
1.31 itojun 268: n = strlen(cp) < 17 ? 17 : strlen(cp);
1.19 itojun 269: else
270: n = 17;
271: printf("\n%25s %-*.*s ", "",
1.31 itojun 272: n, n, cp);
1.19 itojun 273: multiaddr = (u_long)inm.in6m_entry.le_next;
274: }
275: }
1.18 itojun 276: break;
277: #endif
1.8 mickey 278: case AF_IPX:
279: {
280: struct sockaddr_ipx *sipx =
281: (struct sockaddr_ipx *)sa;
282: u_long net;
283: char netnum[8];
284:
1.17 deraadt 285: *(union ipx_net *)&net = sipx->sipx_addr.ipx_net;
286: snprintf(netnum, sizeof netnum, "%xH",
287: ntohl(net));
1.8 mickey 288: upHex(netnum);
289: printf("ipx:%-8s", netnum);
290: printf("%-17s ",
291: ipx_phost((struct sockaddr *)sipx));
1.1 deraadt 292: }
1.15 denny 293: break;
294: case AF_APPLETALK:
295: printf("atlk:%-12s",atalk_print(sa,0x10) );
296: printf("%-12s ",atalk_print(sa,0x0b) );
1.1 deraadt 297: break;
298: case AF_NS:
299: {
300: struct sockaddr_ns *sns =
301: (struct sockaddr_ns *)sa;
302: u_long net;
303: char netnum[8];
304:
1.17 deraadt 305: *(union ns_net *)&net = sns->sns_addr.x_net;
306: snprintf(netnum, sizeof netnum, "%xH",
307: ntohl(net));
1.1 deraadt 308: upHex(netnum);
309: printf("ns:%-8s ", netnum);
310: printf("%-17s ",
311: ns_phost((struct sockaddr *)sns));
312: }
313: break;
314: case AF_LINK:
315: {
316: struct sockaddr_dl *sdl =
317: (struct sockaddr_dl *)sa;
1.5 deraadt 318: m = printf("%-11.11s ", "<Link>");
319: if (sdl->sdl_type == IFT_ETHER ||
1.42 mpf 320: sdl->sdl_type == IFT_CARP ||
1.23 fgsch 321: sdl->sdl_type == IFT_FDDI ||
322: sdl->sdl_type == IFT_ISO88025)
1.5 deraadt 323: printf("%-17.17s ",
1.11 millert 324: ether_ntoa((struct ether_addr *)LLADDR(sdl)));
1.5 deraadt 325: else {
326: cp = (char *)LLADDR(sdl);
327: n = sdl->sdl_alen;
328: goto hexprint;
329: }
1.1 deraadt 330: }
1.5 deraadt 331: break;
1.1 deraadt 332: default:
333: m = printf("(%d)", sa->sa_family);
334: for (cp = sa->sa_len + (char *)sa;
335: --cp > sa->sa_data && (*cp == 0);) {}
336: n = cp - sa->sa_data + 1;
337: cp = sa->sa_data;
338: hexprint:
339: while (--n >= 0)
340: m += printf("%x%c", *cp++ & 0xff,
341: n > 0 ? '.' : ' ');
342: m = 30 - m;
343: while (m-- > 0)
344: putchar(' ');
345: break;
346: }
347: ifaddraddr = (u_long)ifaddr.ifa.ifa_list.tqe_next;
348: }
1.22 camield 349: if (bflag)
350: printf("%10lu %10lu",
351: ifnet.if_ibytes, ifnet.if_obytes);
352: else
353: printf("%8lu %5lu %8lu %5lu %5lu",
354: ifnet.if_ipackets, ifnet.if_ierrors,
355: ifnet.if_opackets, ifnet.if_oerrors,
356: ifnet.if_collisions);
1.1 deraadt 357: if (tflag)
1.22 camield 358: printf(" %4d", ifnet.if_timer);
1.1 deraadt 359: if (dflag)
1.22 camield 360: printf(" %4d", ifnet.if_snd.ifq_drops);
1.1 deraadt 361: putchar('\n');
362: }
363: }
364:
1.4 deraadt 365: #define MAXIF 100
1.1 deraadt 366: struct iftot {
1.3 deraadt 367: char ift_name[IFNAMSIZ]; /* interface name */
1.40 dhartmei 368: u_long ift_ip; /* input packets */
369: u_long ift_ib; /* input bytes */
370: u_long ift_ie; /* input errors */
371: u_long ift_op; /* output packets */
372: u_long ift_ob; /* output bytes */
373: u_long ift_oe; /* output errors */
374: u_long ift_co; /* collisions */
375: u_long ift_dr; /* drops */
1.1 deraadt 376: } iftot[MAXIF];
377:
1.26 millert 378: volatile sig_atomic_t signalled; /* set if alarm goes off "early" */
1.1 deraadt 379:
380: /*
381: * Print a running summary of interface statistics.
382: * Repeat display every interval seconds, showing statistics
383: * collected over that interval. Assumes that interval is non-zero.
384: * First line printed at top of screen is always cumulative.
385: */
386: static void
1.33 deraadt 387: sidewaysintpr(unsigned int interval, u_long off)
1.1 deraadt 388: {
389: struct ifnet ifnet;
390: u_long firstifnet;
1.27 mpech 391: struct iftot *ip, *total;
392: int line;
1.1 deraadt 393: struct iftot *lastif, *sum, *interesting;
1.3 deraadt 394: struct ifnet_head ifhead; /* TAILQ_HEAD */
1.26 millert 395: sigset_t emptyset;
1.1 deraadt 396:
1.3 deraadt 397: /*
398: * Find the pointer to the first ifnet structure. Replace
399: * the pointer to the TAILQ_HEAD with the actual pointer
400: * to the first list element.
401: */
1.43 ! jaredy 402: if (kread(off, &ifhead, sizeof ifhead))
1.1 deraadt 403: return;
1.3 deraadt 404: firstifnet = (u_long)ifhead.tqh_first;
405:
1.1 deraadt 406: lastif = iftot;
407: sum = iftot + MAXIF - 1;
408: total = sum - 1;
1.4 deraadt 409: interesting = (interface == NULL) ? iftot : NULL;
1.1 deraadt 410: for (off = firstifnet, ip = iftot; off;) {
1.43 ! jaredy 411: if (kread(off, &ifnet, sizeof ifnet))
1.1 deraadt 412: break;
1.6 deraadt 413: bzero(ip->ift_name, sizeof(ip->ift_name));
1.22 camield 414: snprintf(ip->ift_name, IFNAMSIZ, "%s", ifnet.if_xname);
1.6 deraadt 415: if (interface && strcmp(ifnet.if_xname, interface) == 0)
1.1 deraadt 416: interesting = ip;
417: ip++;
418: if (ip >= iftot + MAXIF - 2)
419: break;
420: off = (u_long)ifnet.if_list.tqe_next;
1.4 deraadt 421: }
422: if (interesting == NULL) {
423: fprintf(stderr, "%s: %s: unknown interface\n",
424: __progname, interface);
425: exit(1);
1.1 deraadt 426: }
427: lastif = ip;
428:
429: (void)signal(SIGALRM, catchalarm);
430: signalled = NO;
431: (void)alarm(interval);
432: banner:
1.22 camield 433: if (bflag)
434: printf("%7.7s in %8.8s %6.6s out %5.5s",
435: interesting->ift_name, " ",
436: interesting->ift_name, " ");
437: else
438: printf("%5.5s in %5.5s%5.5s out %5.5s %5.5s",
439: interesting->ift_name, " ",
440: interesting->ift_name, " ", " ");
441: if (dflag)
442: printf(" %5.5s", " ");
1.1 deraadt 443: if (lastif - iftot > 0) {
1.22 camield 444: if (bflag)
445: printf(" %7.7s in %8.8s %6.6s out %5.5s",
446: "total", " ", "total", " ");
447: else
448: printf(" %5.5s in %5.5s%5.5s out %5.5s %5.5s",
449: "total", " ", "total", " ", " ");
1.1 deraadt 450: if (dflag)
1.22 camield 451: printf(" %5.5s", " ");
1.1 deraadt 452: }
453: for (ip = iftot; ip < iftot + MAXIF; ip++) {
454: ip->ift_ip = 0;
1.22 camield 455: ip->ift_ib = 0;
1.1 deraadt 456: ip->ift_ie = 0;
457: ip->ift_op = 0;
1.22 camield 458: ip->ift_ob = 0;
1.1 deraadt 459: ip->ift_oe = 0;
460: ip->ift_co = 0;
461: ip->ift_dr = 0;
462: }
463: putchar('\n');
1.22 camield 464: if (bflag)
465: printf("%10.10s %8.8s %10.10s %5.5s",
466: "bytes", " ", "bytes", " ");
467: else
468: printf("%8.8s %5.5s %8.8s %5.5s %5.5s",
469: "packets", "errs", "packets", "errs", "colls");
1.1 deraadt 470: if (dflag)
471: printf(" %5.5s", "drops");
1.22 camield 472: if (lastif - iftot > 0) {
473: if (bflag)
474: printf(" %10.10s %8.8s %10.10s %5.5s",
475: "bytes", " ", "bytes", " ");
476: else
477: printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
478: "packets", "errs", "packets", "errs", "colls");
479: if (dflag)
480: printf(" %5.5s", "drops");
481: }
1.1 deraadt 482: putchar('\n');
483: fflush(stdout);
484: line = 0;
485: loop:
486: sum->ift_ip = 0;
1.22 camield 487: sum->ift_ib = 0;
1.1 deraadt 488: sum->ift_ie = 0;
489: sum->ift_op = 0;
1.22 camield 490: sum->ift_ob = 0;
1.1 deraadt 491: sum->ift_oe = 0;
492: sum->ift_co = 0;
493: sum->ift_dr = 0;
494: for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
1.43 ! jaredy 495: if (kread(off, &ifnet, sizeof ifnet)) {
1.1 deraadt 496: off = 0;
497: continue;
498: }
499: if (ip == interesting) {
1.22 camield 500: if (bflag)
501: printf("%10lu %8.8s %10lu %5.5s",
502: ifnet.if_ibytes - ip->ift_ib, " ",
503: ifnet.if_obytes - ip->ift_ob, " ");
504: else
505: printf("%8lu %5lu %8lu %5lu %5lu",
506: ifnet.if_ipackets - ip->ift_ip,
507: ifnet.if_ierrors - ip->ift_ie,
508: ifnet.if_opackets - ip->ift_op,
509: ifnet.if_oerrors - ip->ift_oe,
510: ifnet.if_collisions - ip->ift_co);
1.1 deraadt 511: if (dflag)
1.41 jaredy 512: printf(" %5lu",
1.1 deraadt 513: ifnet.if_snd.ifq_drops - ip->ift_dr);
514: }
515: ip->ift_ip = ifnet.if_ipackets;
1.22 camield 516: ip->ift_ib = ifnet.if_ibytes;
1.1 deraadt 517: ip->ift_ie = ifnet.if_ierrors;
518: ip->ift_op = ifnet.if_opackets;
1.22 camield 519: ip->ift_ob = ifnet.if_obytes;
1.1 deraadt 520: ip->ift_oe = ifnet.if_oerrors;
521: ip->ift_co = ifnet.if_collisions;
522: ip->ift_dr = ifnet.if_snd.ifq_drops;
523: sum->ift_ip += ip->ift_ip;
1.22 camield 524: sum->ift_ib += ip->ift_ib;
1.1 deraadt 525: sum->ift_ie += ip->ift_ie;
526: sum->ift_op += ip->ift_op;
1.22 camield 527: sum->ift_ob += ip->ift_ob;
1.1 deraadt 528: sum->ift_oe += ip->ift_oe;
529: sum->ift_co += ip->ift_co;
530: sum->ift_dr += ip->ift_dr;
531: off = (u_long)ifnet.if_list.tqe_next;
532: }
533: if (lastif - iftot > 0) {
1.22 camield 534: if (bflag)
535: printf(" %10lu %8.8s %10lu %5.5s",
1.41 jaredy 536: sum->ift_ib - total->ift_ib, " ",
537: sum->ift_ob - total->ift_ob, " ");
1.22 camield 538: else
539: printf(" %8lu %5lu %8lu %5lu %5lu",
1.41 jaredy 540: sum->ift_ip - total->ift_ip,
541: sum->ift_ie - total->ift_ie,
542: sum->ift_op - total->ift_op,
543: sum->ift_oe - total->ift_oe,
544: sum->ift_co - total->ift_co);
1.1 deraadt 545: if (dflag)
1.41 jaredy 546: printf(" %5lu", sum->ift_dr - total->ift_dr);
1.1 deraadt 547: }
548: *total = *sum;
549: putchar('\n');
550: fflush(stdout);
551: line++;
1.26 millert 552: sigemptyset(&emptyset);
553: if (!signalled)
554: sigsuspend(&emptyset);
1.1 deraadt 555: signalled = NO;
556: (void)alarm(interval);
557: if (line == 21)
558: goto banner;
559: goto loop;
560: /*NOTREACHED*/
561: }
562:
563: /*
564: * Called if an interval expires before sidewaysintpr has completed a loop.
565: * Sets a flag to not wait for the alarm.
566: */
567: static void
1.33 deraadt 568: catchalarm(int signo)
1.1 deraadt 569: {
570: signalled = YES;
571: }