Annotation of src/usr.bin/vmstat/vmstat.c, Revision 1.113
1.11 deraadt 1: /* $NetBSD: vmstat.c,v 1.29.4.1 1996/06/05 00:21:05 cgd Exp $ */
1.113 ! deraadt 2: /* $OpenBSD: vmstat.c,v 1.112 2009/09/30 19:39:34 naddy Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1980, 1986, 1991, 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.
1.77 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: */
1.48 art 32:
1.1 deraadt 33: #include <sys/param.h>
34: #include <sys/time.h>
35: #include <sys/proc.h>
36: #include <sys/user.h>
37: #include <sys/dkstat.h>
38: #include <sys/buf.h>
39: #include <sys/namei.h>
40: #include <sys/malloc.h>
41: #include <sys/fcntl.h>
42: #include <sys/ioctl.h>
43: #include <sys/sysctl.h>
44: #include <sys/device.h>
1.48 art 45: #include <sys/pool.h>
1.1 deraadt 46: #include <time.h>
47: #include <nlist.h>
48: #include <kvm.h>
1.21 millert 49: #include <err.h>
1.1 deraadt 50: #include <errno.h>
51: #include <unistd.h>
52: #include <signal.h>
53: #include <stdio.h>
54: #include <ctype.h>
55: #include <stdlib.h>
56: #include <string.h>
57: #include <paths.h>
58: #include <limits.h>
1.6 tholo 59: #include "dkstats.h"
1.1 deraadt 60:
1.56 angelos 61: #include <uvm/uvm_object.h>
1.29 art 62: #include <uvm/uvm_extern.h>
63:
1.1 deraadt 64: struct nlist namelist[] = {
1.70 deraadt 65: #define X_UVMEXP 0 /* sysctl */
1.29 art 66: { "_uvmexp" },
1.70 deraadt 67: #define X_BOOTTIME 1 /* sysctl */
1.1 deraadt 68: { "_boottime" },
1.70 deraadt 69: #define X_NCHSTATS 2 /* sysctl */
1.1 deraadt 70: { "_nchstats" },
1.70 deraadt 71: #define X_KMEMSTAT 3 /* sysctl */
72: { "_kmemstats" },
73: #define X_KMEMBUCKETS 4 /* sysctl */
74: { "_bucket" },
75: #define X_FORKSTAT 5 /* sysctl */
76: { "_forkstat" },
77: #define X_NSELCOLL 6 /* sysctl */
78: { "_nselcoll" },
79: #define X_POOLHEAD 7 /* sysctl */
80: { "_pool_head" },
1.107 deraadt 81: #define X_KMPAGESFREE 8 /* sysctl */
1.98 mickey 82: { "_uvm_km_pages_free" },
1.1 deraadt 83: { "" },
84: };
85:
1.6 tholo 86: /* Objects defined in dkstats.c */
1.73 tdeval 87: extern struct _disk cur, last;
1.10 deraadt 88: extern char **dr_name;
89: extern int *dk_select, dk_ndrive;
1.1 deraadt 90:
1.29 art 91: struct uvmexp uvmexp, ouvmexp;
1.6 tholo 92: int ndrives;
1.1 deraadt 93:
94: int winlines = 20;
95:
96: kvm_t *kd;
97:
98: #define FORKSTAT 0x01
99: #define INTRSTAT 0x02
100: #define MEMSTAT 0x04
101: #define SUMSTAT 0x08
102: #define TIMESTAT 0x10
103: #define VMSTAT 0x20
104:
1.66 millert 105: void cpustats(void);
1.101 otto 106: time_t getuptime(void);
1.66 millert 107: void dkstats(void);
108: void dointr(void);
109: void domem(void);
110: void dopool(void);
111: void dosum(void);
112: void dovmstat(u_int, int);
113: void kread(int, void *, size_t);
114: void usage(void);
115: void dotimes(void);
116: void doforkst(void);
1.101 otto 117: void needhdr(int);
1.112 naddy 118: int pct(int64_t, int64_t);
1.66 millert 119: void printhdr(void);
1.1 deraadt 120:
1.66 millert 121: char **choosedrives(char **);
1.10 deraadt 122:
123: /* Namelist and memory file names. */
124: char *nlistf, *memf;
1.6 tholo 125:
1.50 art 126: extern char *__progname;
127:
1.65 art 128: int verbose = 0;
1.87 aaron 129: int zflag = 0;
1.65 art 130:
1.84 deraadt 131: int ncpu;
132:
1.21 millert 133: int
1.72 deraadt 134: main(int argc, char *argv[])
1.1 deraadt 135: {
1.102 deraadt 136: char errbuf[_POSIX2_LINE_MAX];
137: int c, todo = 0, reps = 0, mib[2];
138: const char *errstr;
139: u_int interval = 0;
1.84 deraadt 140: size_t size;
1.96 djm 141: gid_t gid;
1.1 deraadt 142:
1.87 aaron 143: while ((c = getopt(argc, argv, "c:fiM:mN:stw:vz")) != -1) {
1.1 deraadt 144: switch (c) {
145: case 'c':
146: reps = atoi(optarg);
147: break;
148: case 'f':
149: todo |= FORKSTAT;
150: break;
151: case 'i':
152: todo |= INTRSTAT;
153: break;
154: case 'M':
155: memf = optarg;
156: break;
157: case 'm':
158: todo |= MEMSTAT;
159: break;
160: case 'N':
161: nlistf = optarg;
162: break;
163: case 's':
164: todo |= SUMSTAT;
165: break;
166: case 't':
167: todo |= TIMESTAT;
168: break;
169: case 'w':
1.102 deraadt 170: interval = (u_int)strtonum(optarg, 0, 1000, &errstr);
171: if (errstr)
1.104 pedro 172: errx(1, "-w %s: %s", optarg, errstr);
1.1 deraadt 173: break;
1.65 art 174: case 'v':
175: verbose = 1;
176: break;
1.87 aaron 177: case 'z':
178: zflag = 1;
179: break;
1.1 deraadt 180: case '?':
181: default:
182: usage();
183: }
184: }
185: argc -= optind;
186: argv += optind;
187:
188: if (todo == 0)
189: todo = VMSTAT;
190:
1.96 djm 191: gid = getgid();
1.56 angelos 192: if (nlistf != NULL || memf != NULL) {
1.96 djm 193: if (setresgid(gid, gid, gid) == -1)
194: err(1, "setresgid");
1.56 angelos 195: }
196:
1.1 deraadt 197: /*
198: * Discard setgid privileges if not the running kernel so that bad
199: * guys can't print interesting stuff from kernel memory.
200: */
1.15 tholo 201: if (nlistf != NULL || memf != NULL) {
1.56 angelos 202: kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
203: if (kd == 0)
204: errx(1, "kvm_openfiles: %s", errbuf);
205:
1.96 djm 206: if (nlistf == NULL && memf == NULL)
207: if (setresgid(gid, gid, gid) == -1)
208: err(1, "setresgid");
209:
1.56 angelos 210: if ((c = kvm_nlist(kd, namelist)) != 0) {
211:
212: if (c > 0) {
213: (void)fprintf(stderr,
214: "%s: undefined symbols:", __progname);
215: for (c = 0;
216: c < sizeof(namelist)/sizeof(namelist[0]);
217: c++)
218: if (namelist[c].n_type == 0)
219: fprintf(stderr, " %s",
220: namelist[c].n_name);
221: (void)fputc('\n', stderr);
222: exit(1);
223: } else
224: errx(1, "kvm_nlist: %s", kvm_geterr(kd));
225: }
1.96 djm 226: } else if (setresgid(gid, gid, gid) == -1)
227: err(1, "setresgid");
1.1 deraadt 228:
1.84 deraadt 229: mib[0] = CTL_HW;
230: mib[1] = HW_NCPU;
231: size = sizeof(ncpu);
232: (void) sysctl(mib, 2, &ncpu, &size, NULL, 0);
233:
1.1 deraadt 234: if (todo & VMSTAT) {
235: struct winsize winsize;
236:
1.6 tholo 237: dkinit(0); /* Initialize disk stats, no disks selected. */
238: argv = choosedrives(argv); /* Select disks. */
1.1 deraadt 239: winsize.ws_row = 0;
1.102 deraadt 240: (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize);
1.1 deraadt 241: if (winsize.ws_row > 0)
242: winlines = winsize.ws_row;
243:
244: }
1.25 deraadt 245:
1.1 deraadt 246: #define BACKWARD_COMPATIBILITY
247: #ifdef BACKWARD_COMPATIBILITY
248: if (*argv) {
1.102 deraadt 249: interval = (u_int)strtonum(*argv, 0, 1000, &errstr);
250: if (errstr)
1.104 pedro 251: errx(1, "%s: %s", *argv, errstr);
1.103 deraadt 252:
1.1 deraadt 253: if (*++argv)
254: reps = atoi(*argv);
255: }
256: #endif
257:
258: if (interval) {
259: if (!reps)
260: reps = -1;
261: } else if (reps)
262: interval = 1;
263:
264: if (todo & FORKSTAT)
265: doforkst();
1.48 art 266: if (todo & MEMSTAT) {
1.1 deraadt 267: domem();
1.48 art 268: dopool();
269: }
1.1 deraadt 270: if (todo & SUMSTAT)
271: dosum();
272: if (todo & TIMESTAT)
273: dotimes();
274: if (todo & INTRSTAT)
275: dointr();
276: if (todo & VMSTAT)
277: dovmstat(interval, reps);
278: exit(0);
279: }
280:
281: char **
1.72 deraadt 282: choosedrives(char **argv)
1.1 deraadt 283: {
1.62 mpech 284: int i;
1.1 deraadt 285:
286: /*
287: * Choose drives to be displayed. Priority goes to (in order) drives
288: * supplied as arguments, default drives. If everything isn't filled
289: * in and there are drives not taken care of, display the first few
290: * that fit.
291: */
292: #define BACKWARD_COMPATIBILITY
293: for (ndrives = 0; *argv; ++argv) {
294: #ifdef BACKWARD_COMPATIBILITY
295: if (isdigit(**argv))
296: break;
297: #endif
298: for (i = 0; i < dk_ndrive; i++) {
299: if (strcmp(dr_name[i], *argv))
300: continue;
1.6 tholo 301: dk_select[i] = 1;
1.1 deraadt 302: ++ndrives;
303: break;
304: }
305: }
1.64 deraadt 306: for (i = 0; i < dk_ndrive && ndrives < 2; i++) {
1.6 tholo 307: if (dk_select[i])
1.1 deraadt 308: continue;
1.6 tholo 309: dk_select[i] = 1;
1.1 deraadt 310: ++ndrives;
311: }
312: return(argv);
313: }
314:
1.19 deraadt 315: time_t
1.72 deraadt 316: getuptime(void)
1.1 deraadt 317: {
1.102 deraadt 318: static struct timeval boottime;
1.11 deraadt 319: static time_t now;
1.1 deraadt 320: time_t uptime;
1.102 deraadt 321: size_t size;
1.50 art 322: int mib[2];
1.1 deraadt 323:
1.50 art 324: if (boottime.tv_sec == 0) {
1.56 angelos 325: if (nlistf == NULL && memf == NULL) {
1.50 art 326: size = sizeof(boottime);
327: mib[0] = CTL_KERN;
328: mib[1] = KERN_BOOTTIME;
329: if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0) {
1.56 angelos 330: warn("could not get kern.boottime");
1.50 art 331: bzero(&boottime, sizeof(boottime));
332: }
1.56 angelos 333: } else {
334: kread(X_BOOTTIME, &boottime, sizeof(boottime));
1.50 art 335: }
336: }
1.1 deraadt 337: (void)time(&now);
1.11 deraadt 338: uptime = now - boottime.tv_sec;
1.50 art 339: if (uptime <= 0 || uptime > 60*60*24*365*10)
340: errx(1, "time makes no sense; namelist must be wrong");
341:
1.1 deraadt 342: return(uptime);
343: }
344:
1.105 cloder 345: int hz;
346: volatile sig_atomic_t hdrcnt;
1.1 deraadt 347:
348: void
1.72 deraadt 349: dovmstat(u_int interval, int reps)
1.1 deraadt 350: {
351: time_t uptime, halfuptime;
1.50 art 352: struct clockinfo clkinfo;
1.102 deraadt 353: struct vmtotal total;
1.1 deraadt 354: size_t size;
1.102 deraadt 355: int mib[2];
1.1 deraadt 356:
357: uptime = getuptime();
358: halfuptime = uptime / 2;
359: (void)signal(SIGCONT, needhdr);
360:
1.50 art 361: mib[0] = CTL_KERN;
362: mib[1] = KERN_CLOCKRATE;
363: size = sizeof(clkinfo);
364: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) {
1.56 angelos 365: warn("could not read kern.clockrate");
1.50 art 366: return;
367: }
368: hz = clkinfo.stathz;
1.1 deraadt 369:
370: for (hdrcnt = 1;;) {
1.6 tholo 371: /* Read new disk statistics */
372: dkreadstats();
1.73 tdeval 373: if (!--hdrcnt || last.dk_ndrive != cur.dk_ndrive)
374: printhdr();
1.56 angelos 375: if (nlistf == NULL && memf == NULL) {
376: size = sizeof(struct uvmexp);
1.52 angelos 377: mib[0] = CTL_VM;
378: mib[1] = VM_UVMEXP;
379: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 380: warn("could not get vm.uvmexp");
381: bzero(&uvmexp, sizeof(struct uvmexp));
1.52 angelos 382: }
1.56 angelos 383: } else {
384: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 385: }
1.1 deraadt 386: size = sizeof(total);
387: mib[0] = CTL_VM;
388: mib[1] = VM_METER;
389: if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) {
1.56 angelos 390: warn("could not read vm.vmmeter");
1.1 deraadt 391: bzero(&total, sizeof(total));
392: }
1.22 millert 393: (void)printf("%2u%2u%2u",
1.1 deraadt 394: total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
1.111 deraadt 395: #define rate(x) ((((unsigned)x) + halfuptime) / uptime) /* round */
1.102 deraadt 396: #define pgtok(a) ((a) * ((unsigned int)uvmexp.pagesize >> 10))
1.106 sobrado 397: (void)printf("%7u %7u ",
1.1 deraadt 398: pgtok(total.t_avm), pgtok(total.t_free));
1.106 sobrado 399: (void)printf("%4u ", rate(uvmexp.faults - ouvmexp.faults));
1.29 art 400: (void)printf("%3u ", rate(uvmexp.pdreact - ouvmexp.pdreact));
401: (void)printf("%3u ", rate(uvmexp.pageins - ouvmexp.pageins));
402: (void)printf("%3u %3u ",
403: rate(uvmexp.pdpageouts - ouvmexp.pdpageouts), 0);
404: (void)printf("%3u ", rate(uvmexp.pdscans - ouvmexp.pdscans));
405: dkstats();
1.64 deraadt 406: (void)printf("%4u %5u %4u ",
1.29 art 407: rate(uvmexp.intrs - ouvmexp.intrs),
408: rate(uvmexp.syscalls - ouvmexp.syscalls),
409: rate(uvmexp.swtch - ouvmexp.swtch));
1.1 deraadt 410: cpustats();
411: (void)printf("\n");
412: (void)fflush(stdout);
413: if (reps >= 0 && --reps <= 0)
414: break;
1.29 art 415: ouvmexp = uvmexp;
1.1 deraadt 416: uptime = interval;
417: /*
418: * We round upward to avoid losing low-frequency events
419: * (i.e., >= 1 per interval but < 1 per second).
420: */
1.14 deraadt 421: halfuptime = uptime == 1 ? 0 : (uptime + 1) / 2;
1.1 deraadt 422: (void)sleep(interval);
423: }
424: }
425:
1.21 millert 426: void
1.72 deraadt 427: printhdr(void)
1.1 deraadt 428: {
1.62 mpech 429: int i;
1.1 deraadt 430:
1.108 sobrado 431: (void)printf(" procs memory page%*s", 20, "");
1.6 tholo 432: if (ndrives > 0)
1.106 sobrado 433: (void)printf("%s %*straps cpu\n",
1.6 tholo 434: ((ndrives > 1) ? "disks" : "disk"),
1.106 sobrado 435: ((ndrives > 1) ? ndrives * 4 - 5 : 0), "");
1.1 deraadt 436: else
1.106 sobrado 437: (void)printf("%*s traps cpu\n",
1.6 tholo 438: ndrives * 3, "");
439:
1.106 sobrado 440: (void)printf(" r b w avm fre flt re pi po fr sr ");
1.1 deraadt 441: for (i = 0; i < dk_ndrive; i++)
1.6 tholo 442: if (dk_select[i])
1.67 ho 443: (void)printf("%c%c%c ", dr_name[i][0],
1.64 deraadt 444: dr_name[i][1],
1.1 deraadt 445: dr_name[i][strlen(dr_name[i]) - 1]);
1.79 tedu 446: (void)printf(" int sys cs us sy id\n");
1.1 deraadt 447: hdrcnt = winlines - 2;
448: }
449:
450: /*
451: * Force a header to be prepended to the next output.
452: */
1.90 deraadt 453: /* ARGSUSED */
1.1 deraadt 454: void
1.78 deraadt 455: needhdr(int signo)
1.1 deraadt 456: {
457:
458: hdrcnt = 1;
459: }
460:
461: void
1.72 deraadt 462: dotimes(void)
1.1 deraadt 463: {
464: u_int pgintime, rectime;
1.102 deraadt 465: size_t size;
1.52 angelos 466: int mib[2];
1.1 deraadt 467:
1.56 angelos 468: /* XXX Why are these set to 0 ? This doesn't look right. */
1.12 tholo 469: pgintime = 0;
470: rectime = 0;
1.56 angelos 471:
472: if (nlistf == NULL && memf == NULL) {
473: size = sizeof(struct uvmexp);
1.52 angelos 474: mib[0] = CTL_VM;
475: mib[1] = VM_UVMEXP;
476: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 477: warn("could not read vm.uvmexp");
478: bzero(&uvmexp, sizeof(struct uvmexp));
1.52 angelos 479: }
1.56 angelos 480: } else {
481: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 482: }
483:
1.29 art 484: (void)printf("%u reactivates, %u total time (usec)\n",
485: uvmexp.pdreact, rectime);
1.89 miod 486: if (uvmexp.pdreact != 0)
487: (void)printf("average: %u usec / reclaim\n",
488: rectime / uvmexp.pdreact);
1.29 art 489: (void)printf("\n");
490: (void)printf("%u page ins, %u total time (msec)\n",
491: uvmexp.pageins, pgintime / 10);
1.89 miod 492: if (uvmexp.pageins != 0)
493: (void)printf("average: %8.1f msec / page in\n",
1.103 deraadt 494: pgintime / (uvmexp.pageins * 10.0));
1.1 deraadt 495: }
496:
1.21 millert 497: int
1.112 naddy 498: pct(int64_t top, int64_t bot)
1.1 deraadt 499: {
1.102 deraadt 500: int ans;
1.1 deraadt 501:
502: if (bot == 0)
503: return(0);
1.112 naddy 504: ans = top * 100 / bot;
1.1 deraadt 505: return (ans);
506: }
507:
508: void
1.72 deraadt 509: dosum(void)
1.1 deraadt 510: {
511: struct nchstats nchstats;
1.102 deraadt 512: int mib[2], nselcoll;
1.112 naddy 513: long long nchtotal;
1.52 angelos 514: size_t size;
1.1 deraadt 515:
1.56 angelos 516: if (nlistf == NULL && memf == NULL) {
517: size = sizeof(struct uvmexp);
1.52 angelos 518: mib[0] = CTL_VM;
519: mib[1] = VM_UVMEXP;
520: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 521: warn("could not read vm.uvmexp");
522: bzero(&uvmexp, sizeof(struct uvmexp));
1.52 angelos 523: }
1.56 angelos 524: } else {
525: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 526: }
527:
1.32 art 528: /* vm_page constants */
1.35 hugh 529: (void)printf("%11u bytes per page\n", uvmexp.pagesize);
1.32 art 530:
531: /* vm_page counters */
1.35 hugh 532: (void)printf("%11u pages managed\n", uvmexp.npages);
533: (void)printf("%11u pages free\n", uvmexp.free);
534: (void)printf("%11u pages active\n", uvmexp.active);
535: (void)printf("%11u pages inactive\n", uvmexp.inactive);
536: (void)printf("%11u pages being paged out\n", uvmexp.paging);
537: (void)printf("%11u pages wired\n", uvmexp.wired);
1.71 art 538: (void)printf("%11u pages zeroed\n", uvmexp.zeropages);
1.35 hugh 539: (void)printf("%11u pages reserved for pagedaemon\n",
1.48 art 540: uvmexp.reserve_pagedaemon);
1.35 hugh 541: (void)printf("%11u pages reserved for kernel\n",
1.48 art 542: uvmexp.reserve_kernel);
1.32 art 543:
544: /* swap */
1.35 hugh 545: (void)printf("%11u swap pages\n", uvmexp.swpages);
546: (void)printf("%11u swap pages in use\n", uvmexp.swpginuse);
547: (void)printf("%11u total anon's in system\n", uvmexp.nanon);
548: (void)printf("%11u free anon's\n", uvmexp.nfreeanon);
1.32 art 549:
550: /* stat counters */
1.35 hugh 551: (void)printf("%11u page faults\n", uvmexp.faults);
552: (void)printf("%11u traps\n", uvmexp.traps);
553: (void)printf("%11u interrupts\n", uvmexp.intrs);
554: (void)printf("%11u cpu context switches\n", uvmexp.swtch);
1.95 mickey 555: (void)printf("%11u fpu context switches\n", uvmexp.fpswtch);
1.35 hugh 556: (void)printf("%11u software interrupts\n", uvmexp.softs);
557: (void)printf("%11u syscalls\n", uvmexp.syscalls);
558: (void)printf("%11u pagein operations\n", uvmexp.pageins);
559: (void)printf("%11u swap ins\n", uvmexp.swapins);
560: (void)printf("%11u swap outs\n", uvmexp.swapouts);
561: (void)printf("%11u forks\n", uvmexp.forks);
562: (void)printf("%11u forks where vmspace is shared\n",
1.48 art 563: uvmexp.forks_sharevm);
1.97 pedro 564: (void)printf("%11u kernel map entries\n", uvmexp.kmapent);
1.32 art 565:
566: /* daemon counters */
1.64 deraadt 567: (void)printf("%11u number of times the pagedaemon woke up\n",
1.48 art 568: uvmexp.pdwoke);
1.35 hugh 569: (void)printf("%11u revolutions of the clock hand\n", uvmexp.pdrevs);
570: (void)printf("%11u pages freed by pagedaemon\n", uvmexp.pdfreed);
571: (void)printf("%11u pages scanned by pagedaemon\n", uvmexp.pdscans);
572: (void)printf("%11u pages reactivated by pagedaemon\n", uvmexp.pdreact);
573: (void)printf("%11u busy pages found by pagedaemon\n", uvmexp.pdbusy);
1.29 art 574:
1.56 angelos 575: if (nlistf == NULL && memf == NULL) {
1.52 angelos 576: size = sizeof(nchstats);
577: mib[0] = CTL_KERN;
578: mib[1] = KERN_NCHSTATS;
579: if (sysctl(mib, 2, &nchstats, &size, NULL, 0) < 0) {
1.56 angelos 580: warn("could not read kern.nchstats");
1.52 angelos 581: bzero(&nchstats, sizeof(nchstats));
582: }
1.56 angelos 583: } else {
584: kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
1.52 angelos 585: }
586:
1.1 deraadt 587: nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
588: nchstats.ncs_badhits + nchstats.ncs_falsehits +
589: nchstats.ncs_miss + nchstats.ncs_long;
1.112 naddy 590: (void)printf("%11lld total name lookups\n", nchtotal);
1.52 angelos 591: (void)printf("%11s cache hits (%d%% pos + %d%% neg) system %d%% "
592: "per-directory\n",
1.112 naddy 593: "", pct(nchstats.ncs_goodhits, nchtotal),
594: pct(nchstats.ncs_neghits, nchtotal),
595: pct(nchstats.ncs_pass2, nchtotal));
1.35 hugh 596: (void)printf("%11s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
1.112 naddy 597: pct(nchstats.ncs_badhits, nchtotal),
598: pct(nchstats.ncs_falsehits, nchtotal),
599: pct(nchstats.ncs_long, nchtotal));
1.52 angelos 600:
1.56 angelos 601: if (nlistf == NULL && memf == NULL) {
1.52 angelos 602: size = sizeof(nselcoll);
603: mib[0] = CTL_KERN;
604: mib[1] = KERN_NSELCOLL;
605: if (sysctl(mib, 2, &nselcoll, &size, NULL, 0) < 0) {
1.56 angelos 606: warn("could not read kern.nselcoll");
1.52 angelos 607: nselcoll = 0;
608: }
1.56 angelos 609: } else {
610: kread(X_NSELCOLL, &nselcoll, sizeof(nselcoll));
1.52 angelos 611: }
1.50 art 612: (void)printf("%11d select collisions\n", nselcoll);
1.1 deraadt 613: }
614:
615: void
1.72 deraadt 616: doforkst(void)
1.1 deraadt 617: {
618: struct forkstat fks;
1.52 angelos 619: size_t size;
620: int mib[2];
621:
1.56 angelos 622: if (nlistf == NULL && memf == NULL) {
1.52 angelos 623: size = sizeof(struct forkstat);
624: mib[0] = CTL_KERN;
625: mib[1] = KERN_FORKSTAT;
626: if (sysctl(mib, 2, &fks, &size, NULL, 0) < 0) {
1.56 angelos 627: warn("could not read kern.forkstat");
1.52 angelos 628: bzero(&fks, sizeof(struct forkstat));
629: }
1.56 angelos 630: } else {
631: kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
1.52 angelos 632: }
1.1 deraadt 633:
634: (void)printf("%d forks, %d pages, average %.2f\n",
635: fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
636: (void)printf("%d vforks, %d pages, average %.2f\n",
1.72 deraadt 637: fks.cntvfork, fks.sizvfork,
638: (double)fks.sizvfork / (fks.cntvfork ? fks.cntvfork : 1));
1.12 tholo 639: (void)printf("%d rforks, %d pages, average %.2f\n",
1.72 deraadt 640: fks.cntrfork, fks.sizrfork,
641: (double)fks.sizrfork / (fks.cntrfork ? fks.cntrfork : 1));
1.36 niklas 642: (void)printf("%d kthread creations, %d pages, average %.2f\n",
1.72 deraadt 643: fks.cntkthread, fks.sizkthread,
644: (double)fks.sizkthread / (fks.cntkthread ? fks.cntkthread : 1));
1.1 deraadt 645: }
646:
647: void
1.72 deraadt 648: dkstats(void)
1.1 deraadt 649: {
1.62 mpech 650: int dn, state;
1.1 deraadt 651: double etime;
652:
1.6 tholo 653: /* Calculate disk stat deltas. */
654: dkswap();
1.1 deraadt 655: etime = 0;
656: for (state = 0; state < CPUSTATES; ++state) {
1.6 tholo 657: etime += cur.cp_time[state];
1.1 deraadt 658: }
659: if (etime == 0)
660: etime = 1;
661: etime /= hz;
1.84 deraadt 662: etime /= ncpu;
1.1 deraadt 663: for (dn = 0; dn < dk_ndrive; ++dn) {
1.6 tholo 664: if (!dk_select[dn])
1.1 deraadt 665: continue;
1.82 tedu 666: (void)printf("%3.0f ",
667: (cur.dk_rxfer[dn] + cur.dk_rxfer[dn]) / etime);
1.1 deraadt 668: }
669: }
670:
671: void
1.72 deraadt 672: cpustats(void)
1.1 deraadt 673: {
1.102 deraadt 674: double percent, total;
1.62 mpech 675: int state;
1.1 deraadt 676:
677: total = 0;
678: for (state = 0; state < CPUSTATES; ++state)
1.6 tholo 679: total += cur.cp_time[state];
1.1 deraadt 680: if (total)
1.101 otto 681: percent = 100 / total;
1.1 deraadt 682: else
1.101 otto 683: percent = 0;
684: (void)printf("%2.0f ", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * percent);
685: (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * percent);
686: (void)printf("%2.0f", cur.cp_time[CP_IDLE] * percent);
1.1 deraadt 687: }
688:
689: void
1.72 deraadt 690: dointr(void)
1.74 art 691: {
1.102 deraadt 692: int nintr, mib[4], i;
693: char intrname[128];
694: u_int64_t inttotal;
1.74 art 695: time_t uptime;
696: size_t siz;
697:
1.93 miod 698: if (nlistf != NULL || memf != NULL) {
699: errx(1,
700: "interrupt statistics are only available on live kernels");
701: }
702:
1.74 art 703: uptime = getuptime();
704:
705: mib[0] = CTL_KERN;
706: mib[1] = KERN_INTRCNT;
707: mib[2] = KERN_INTRCNT_NUM;
708: siz = sizeof(nintr);
709: if (sysctl(mib, 3, &nintr, &siz, NULL, 0) < 0) {
710: warnx("could not read kern.intrcnt.nintrcnt");
711: return;
712: }
713:
1.91 deraadt 714: (void)printf("%-16s %20s %8s\n", "interrupt", "total", "rate");
1.87 aaron 715:
1.74 art 716: inttotal = 0;
717: for (i = 0; i < nintr; i++) {
1.87 aaron 718: char name[128];
1.90 deraadt 719: u_quad_t cnt;
1.87 aaron 720: int vector;
1.74 art 721:
722: mib[0] = CTL_KERN;
723: mib[1] = KERN_INTRCNT;
724: mib[2] = KERN_INTRCNT_NAME;
725: mib[3] = i;
1.87 aaron 726: siz = sizeof(name);
727: if (sysctl(mib, 4, name, &siz, NULL, 0) < 0) {
1.74 art 728: warnx("could not read kern.intrcnt.name.%d", i);
1.87 aaron 729: return;
730: }
731:
732: mib[0] = CTL_KERN;
733: mib[1] = KERN_INTRCNT;
734: mib[2] = KERN_INTRCNT_VECTOR;
735: mib[3] = i;
736: siz = sizeof(vector);
737: if (sysctl(mib, 4, &vector, &siz, NULL, 0) < 0) {
738: strlcpy(intrname, name, sizeof(intrname));
739: } else {
740: snprintf(intrname, sizeof(intrname), "irq%d/%s",
741: vector, name);
1.74 art 742: }
743:
744: mib[0] = CTL_KERN;
745: mib[1] = KERN_INTRCNT;
746: mib[2] = KERN_INTRCNT_CNT;
747: mib[3] = i;
748: siz = sizeof(cnt);
749: if (sysctl(mib, 4, &cnt, &siz, NULL, 0) < 0) {
1.75 grange 750: warnx("could not read kern.intrcnt.cnt.%d", i);
1.90 deraadt 751: return;
1.74 art 752: }
1.90 deraadt 753:
1.87 aaron 754: if (cnt || zflag)
1.91 deraadt 755: (void)printf("%-16.16s %20llu %8llu\n", intrname,
1.90 deraadt 756: cnt, cnt / uptime);
1.74 art 757: inttotal += cnt;
758: }
759:
1.91 deraadt 760: (void)printf("%-16s %20llu %8llu\n", "Total", inttotal,
1.90 deraadt 761: inttotal / uptime);
1.1 deraadt 762: }
763:
764: /*
765: * These names are defined in <sys/malloc.h>.
766: */
1.101 otto 767: const char *kmemnames[] = INITKMEMNAMES;
1.1 deraadt 768:
769: void
1.72 deraadt 770: domem(void)
1.1 deraadt 771: {
1.102 deraadt 772: struct kmembuckets buckets[MINBUCKET + 16], *kp;
773: struct kmemstats kmemstats[M_LAST], *ks;
774: int i, j, len, size, first, mib[4];
1.50 art 775: u_long totuse = 0, totfree = 0;
1.102 deraadt 776: char buf[BUFSIZ], *bufp, *ap;
1.50 art 777: quad_t totreq = 0;
1.101 otto 778: const char *name;
1.50 art 779: size_t siz;
780:
781: if (memf == NULL && nlistf == NULL) {
1.53 deraadt 782: mib[0] = CTL_KERN;
1.50 art 783: mib[1] = KERN_MALLOCSTATS;
784: mib[2] = KERN_MALLOC_BUCKETS;
785: siz = sizeof(buf);
786: if (sysctl(mib, 3, buf, &siz, NULL, 0) < 0) {
1.56 angelos 787: warnx("could not read kern.malloc.buckets");
1.50 art 788: return;
789: }
790:
791: bufp = buf;
792: mib[2] = KERN_MALLOC_BUCKET;
793: siz = sizeof(struct kmembuckets);
794: i = 0;
795: while ((ap = strsep(&bufp, ",")) != NULL) {
1.53 deraadt 796: mib[3] = atoi(ap);
1.50 art 797:
798: if (sysctl(mib, 4, &buckets[MINBUCKET + i], &siz,
1.53 deraadt 799: NULL, 0) < 0) {
1.56 angelos 800: warn("could not read kern.malloc.bucket.%d", mib[3]);
1.50 art 801: return;
802: }
803: i++;
804: }
805: } else {
1.53 deraadt 806: kread(X_KMEMBUCKETS, buckets, sizeof(buckets));
1.50 art 807: }
1.1 deraadt 808:
1.18 kstailey 809: for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16;
810: i++, kp++) {
1.65 art 811: if (kp->kb_calls == 0 && !verbose)
1.1 deraadt 812: continue;
1.18 kstailey 813: if (first) {
814: (void)printf("Memory statistics by bucket size\n");
815: (void)printf(
1.50 art 816: " Size In Use Free Requests HighWater Couldfree\n");
1.18 kstailey 817: first = 0;
818: }
1.1 deraadt 819: size = 1 << i;
1.60 art 820: (void)printf("%8d %8llu %6llu %18llu %7llu %10llu\n", size,
821: (unsigned long long)(kp->kb_total - kp->kb_totalfree),
822: (unsigned long long)kp->kb_totalfree,
823: (unsigned long long)kp->kb_calls,
824: (unsigned long long)kp->kb_highwat,
825: (unsigned long long)kp->kb_couldfree);
1.1 deraadt 826: totfree += size * kp->kb_totalfree;
1.18 kstailey 827: }
828:
829: /*
830: * If kmem statistics are not being gathered by the kernel,
831: * first will still be 1.
832: */
833: if (first) {
834: printf(
835: "Kmem statistics are not being gathered by the kernel.\n");
836: return;
1.1 deraadt 837: }
838:
1.52 angelos 839: if (memf == NULL && nlistf == NULL) {
840: bzero(kmemstats, sizeof(kmemstats));
841: for (i = 0; i < M_LAST; i++) {
1.53 deraadt 842: mib[0] = CTL_KERN;
1.52 angelos 843: mib[1] = KERN_MALLOCSTATS;
844: mib[2] = KERN_MALLOC_KMEMSTATS;
845: mib[3] = i;
846: siz = sizeof(struct kmemstats);
847:
1.103 deraadt 848: /*
1.52 angelos 849: * Skip errors -- these are presumed to be unallocated
850: * entries.
851: */
852: if (sysctl(mib, 4, &kmemstats[i], &siz, NULL, 0) < 0)
853: continue;
854: }
855: } else {
856: kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats));
857: }
858:
1.1 deraadt 859: (void)printf("\nMemory usage type by bucket size\n");
860: (void)printf(" Size Type(s)\n");
861: kp = &buckets[MINBUCKET];
862: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) {
863: if (kp->kb_calls == 0)
864: continue;
865: first = 1;
866: len = 8;
867: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
868: if (ks->ks_calls == 0)
869: continue;
870: if ((ks->ks_size & j) == 0)
871: continue;
872: name = kmemnames[i] ? kmemnames[i] : "undefined";
873: len += 2 + strlen(name);
874: if (first)
875: printf("%8d %s", j, name);
876: else
877: printf(",");
878: if (len >= 80) {
879: printf("\n\t ");
880: len = 10 + strlen(name);
881: }
882: if (!first)
883: printf(" %s", name);
884: first = 0;
885: }
886: printf("\n");
887: }
888:
889: (void)printf(
1.26 deraadt 890: "\nMemory statistics by type Type Kern\n");
1.1 deraadt 891: (void)printf(
1.26 deraadt 892: " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n");
1.1 deraadt 893: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
894: if (ks->ks_calls == 0)
895: continue;
1.24 mickey 896: (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u",
1.1 deraadt 897: kmemnames[i] ? kmemnames[i] : "undefined",
898: ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
899: (ks->ks_maxused + 1023) / 1024,
900: (ks->ks_limit + 1023) / 1024, ks->ks_calls,
901: ks->ks_limblocks, ks->ks_mapblocks);
902: first = 1;
903: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
904: if ((ks->ks_size & j) == 0)
905: continue;
906: if (first)
907: printf(" %d", j);
908: else
909: printf(",%d", j);
910: first = 0;
911: }
912: printf("\n");
913: totuse += ks->ks_memuse;
914: totreq += ks->ks_calls;
915: }
916: (void)printf("\nMemory Totals: In Use Free Requests\n");
1.50 art 917: (void)printf(" %7luK %6luK %8qu\n",
1.1 deraadt 918: (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
919: }
920:
1.54 art 921: static void
922: print_pool(struct pool *pp, char *name)
923: {
924: static int first = 1;
1.102 deraadt 925: char maxp[32];
1.54 art 926: int ovflw;
927:
928: if (first) {
929: (void)printf("Memory resource pool statistics\n");
930: (void)printf(
931: "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n",
932: "Name",
933: "Size",
934: "Requests",
935: "Fail",
1.110 otto 936: "InUse",
1.54 art 937: "Pgreq",
938: "Pgrel",
939: "Npage",
940: "Hiwat",
941: "Minpg",
942: "Maxpg",
943: "Idle");
944: first = 0;
945: }
1.65 art 946:
947: /* Skip unused pools unless verbose output. */
948: if (pp->pr_nget == 0 && !verbose)
949: return;
950:
1.54 art 951: if (pp->pr_maxpages == UINT_MAX)
1.69 deraadt 952: snprintf(maxp, sizeof maxp, "inf");
1.54 art 953: else
1.69 deraadt 954: snprintf(maxp, sizeof maxp, "%u", pp->pr_maxpages);
1.54 art 955: /*
956: * Print single word. `ovflow' is number of characters didn't fit
957: * on the last word. `fmt' is a format string to print this word.
958: * It must contain asterisk for field width. `width' is a width
959: * occupied by this word. `fixed' is a number of constant chars in
960: * `fmt'. `val' is a value to be printed using format string `fmt'.
961: */
962: #define PRWORD(ovflw, fmt, width, fixed, val) do { \
963: (ovflw) += printf((fmt), \
964: (width) - (fixed) - (ovflw) > 0 ? \
965: (width) - (fixed) - (ovflw) : 0, \
966: (val)) - (width); \
967: if ((ovflw) < 0) \
968: (ovflw) = 0; \
969: } while (/* CONSTCOND */0)
970:
971: ovflw = 0;
972: PRWORD(ovflw, "%-*s", 11, 0, name);
973: PRWORD(ovflw, " %*u", 5, 1, pp->pr_size);
974: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget);
975: PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail);
1.110 otto 976: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget - pp->pr_nput);
1.54 art 977: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc);
978: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree);
979: PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages);
980: PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat);
981: PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages);
982: PRWORD(ovflw, " %*s", 6, 1, maxp);
1.103 deraadt 983: PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle);
1.54 art 984: }
985:
1.55 art 986: static void dopool_kvm(void);
987: static void dopool_sysctl(void);
988:
1.48 art 989: void
990: dopool(void)
991: {
1.55 art 992: if (nlistf == NULL && memf == NULL)
993: dopool_sysctl();
994: else
995: dopool_kvm();
996: }
997:
998: void
999: dopool_sysctl(void)
1000: {
1.102 deraadt 1001: int mib[4], npools, i, kmfp;
1.63 art 1002: long total = 0, inuse = 0;
1.55 art 1003: struct pool pool;
1004: size_t size;
1005:
1006: mib[0] = CTL_KERN;
1007: mib[1] = KERN_POOL;
1008: mib[2] = KERN_POOL_NPOOLS;
1009: size = sizeof(npools);
1010: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
1.92 pedro 1011: warn("can't figure out number of pools in kernel");
1.55 art 1012: return;
1013: }
1014:
1015: for (i = 1; npools; i++) {
1016: char name[32];
1017:
1018: mib[0] = CTL_KERN;
1019: mib[1] = KERN_POOL;
1020: mib[2] = KERN_POOL_POOL;
1021: mib[3] = i;
1022: size = sizeof(struct pool);
1023: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
1024: if (errno == ENOENT)
1025: continue;
1.92 pedro 1026: warn("error getting pool");
1.55 art 1027: return;
1028: }
1029: npools--;
1030: mib[2] = KERN_POOL_NAME;
1031: size = sizeof(name);
1032: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
1.92 pedro 1033: warn("error getting pool name");
1.55 art 1034: return;
1035: }
1036: print_pool(&pool, name);
1.63 art 1037:
1038: inuse += (pool.pr_nget - pool.pr_nput) * pool.pr_size;
1039: total += pool.pr_npages * getpagesize(); /* XXX */
1.55 art 1040: }
1.63 art 1041:
1042: inuse /= 1024;
1043: total /= 1024;
1.107 deraadt 1044: if (nlistf == NULL && memf == NULL) {
1045: int mib[] = { CTL_VM, VM_KMPAGESFREE };
1046: size_t size = sizeof(kmfp);
1047:
1048: if (sysctl(mib, 2, &kmfp, &size, NULL, 0) < 0) {
1049: warn("could not read uvm.kmpagesfree");
1050: return;
1051: }
1052: } else {
1053: kread(X_KMPAGESFREE, &kmfp, sizeof(kmfp));
1054: }
1055: total += kmfp * (getpagesize() / 1024);
1.63 art 1056: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1057: inuse, total, (double)(100 * inuse) / total);
1.55 art 1058: }
1059:
1060: void
1061: dopool_kvm(void)
1062: {
1.48 art 1063: TAILQ_HEAD(,pool) pool_head;
1064: struct pool pool, *pp = &pool;
1.102 deraadt 1065: long total = 0, inuse = 0;
1066: u_long addr;
1.98 mickey 1067: int kmfp;
1.48 art 1068:
1069: kread(X_POOLHEAD, &pool_head, sizeof(pool_head));
1.102 deraadt 1070: addr = (u_long)TAILQ_FIRST(&pool_head);
1.48 art 1071:
1.55 art 1072: while (addr != 0) {
1.54 art 1073: char name[32];
1.56 angelos 1074:
1.48 art 1075: if (kvm_read(kd, addr, (void *)pp, sizeof *pp) != sizeof *pp) {
1076: (void)fprintf(stderr,
1077: "vmstat: pool chain trashed: %s\n",
1078: kvm_geterr(kd));
1079: exit(1);
1080: }
1.102 deraadt 1081: if (kvm_read(kd, (u_long)pp->pr_wchan, name, sizeof name) < 0) {
1.48 art 1082: (void)fprintf(stderr,
1083: "vmstat: pool name trashed: %s\n",
1084: kvm_geterr(kd));
1085: exit(1);
1086: }
1.56 angelos 1087:
1.48 art 1088: name[31] = '\0';
1089:
1.54 art 1090: print_pool(pp, name);
1.48 art 1091:
1092: inuse += (pp->pr_nget - pp->pr_nput) * pp->pr_size;
1.63 art 1093: total += pp->pr_npages * getpagesize(); /* XXX */
1.56 angelos 1094:
1.102 deraadt 1095: addr = (u_long)TAILQ_NEXT(pp, pr_poollist);
1.48 art 1096: }
1097:
1098: inuse /= 1024;
1099: total /= 1024;
1.107 deraadt 1100: kread(X_KMPAGESFREE, &kmfp, sizeof(kmfp));
1101: total += kmfp * (getpagesize() / 1024);
1.48 art 1102: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1103: inuse, total, (double)(100 * inuse) / total);
1104: }
1105:
1.1 deraadt 1106: /*
1107: * kread reads something from the kernel, given its nlist index.
1108: */
1109: void
1.72 deraadt 1110: kread(int nlx, void *addr, size_t size)
1.1 deraadt 1111: {
1112: char *sym;
1113:
1114: if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1115: sym = namelist[nlx].n_name;
1116: if (*sym == '_')
1117: ++sym;
1.50 art 1118: errx(1, "symbol %s not defined", sym);
1.1 deraadt 1119: }
1120: if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) {
1121: sym = namelist[nlx].n_name;
1122: if (*sym == '_')
1123: ++sym;
1.50 art 1124: errx(1, "%s: %s", sym, kvm_geterr(kd));
1.1 deraadt 1125: }
1126: }
1127:
1128: void
1.72 deraadt 1129: usage(void)
1.1 deraadt 1130: {
1.88 jmc 1131: (void)fprintf(stderr, "usage: %s [-fimstvz] [-c count] [-M core] "
1.109 sobrado 1132: "[-N system] [-w wait] [disk ...]\n", __progname);
1.1 deraadt 1133: exit(1);
1134: }
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