Annotation of src/usr.bin/systat/main.c, Revision 1.75
1.75 ! millert 1: /* $OpenBSD: main.c,v 1.74 2021/06/02 08:32:22 martijn Exp $ */
1.38 canacar 2: /*
3: * Copyright (c) 2001, 2007 Can Erkin Acar
4: * Copyright (c) 2001 Daniel Hartmeier
5: * All rights reserved.
1.1 deraadt 6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: *
1.38 canacar 11: * - Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * - Redistributions in binary form must reproduce the above
14: * copyright notice, this list of conditions and the following
15: * disclaimer in the documentation and/or other materials provided
16: * with the distribution.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21: * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22: * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24: * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26: * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: *
1.1 deraadt 31: */
32:
1.38 canacar 33: #include <sys/types.h>
1.21 deraadt 34: #include <sys/sysctl.h>
1.1 deraadt 35:
1.38 canacar 36:
37: #include <ctype.h>
38: #include <curses.h>
1.1 deraadt 39: #include <err.h>
1.38 canacar 40: #include <errno.h>
41: #include <fcntl.h>
42: #include <limits.h>
1.73 martijn 43: #include <math.h>
1.38 canacar 44: #include <netdb.h>
1.1 deraadt 45: #include <signal.h>
46: #include <stdio.h>
1.73 martijn 47: #include <stdint.h>
1.38 canacar 48: #include <stdlib.h>
1.1 deraadt 49: #include <string.h>
1.38 canacar 50: #include <stdarg.h>
1.3 deraadt 51: #include <unistd.h>
1.35 deraadt 52: #include <utmp.h>
1.1 deraadt 53:
1.38 canacar 54: #include "engine.h"
1.1 deraadt 55: #include "systat.h"
56:
1.66 otto 57: #define TIMEPOS (80 - 8 - 20 - 1)
1.58 lum 58:
1.21 deraadt 59: double dellave;
1.1 deraadt 60:
1.21 deraadt 61: kvm_t *kd;
62: char *nlistf = NULL;
1.20 pvalchev 63: char *memf = NULL;
1.21 deraadt 64: double avenrun[3];
1.36 tedu 65: double naptime = 5.0;
1.21 deraadt 66: int verbose = 1; /* to report kvm read errs */
1.38 canacar 67: int nflag = 1;
1.35 deraadt 68: int ut, hz, stathz;
1.61 deraadt 69: char hostname[HOST_NAME_MAX+1];
1.1 deraadt 70: WINDOW *wnd;
1.32 deraadt 71: int CMDLINE;
1.58 lum 72: char timebuf[26];
73: char uloadbuf[TIMEPOS];
1.1 deraadt 74:
1.38 canacar 75:
1.50 canacar 76: int ucount(void);
77: void usage(void);
1.73 martijn 78: double strtodnum(const char *, double, double, const char **);
1.50 canacar 79:
1.38 canacar 80: /* command prompt */
81:
1.46 canacar 82: void cmd_delay(const char *);
83: void cmd_count(const char *);
84: void cmd_compat(const char *);
1.38 canacar 85:
86: struct command cm_compat = {"Command", cmd_compat};
87: struct command cm_delay = {"Seconds to delay", cmd_delay};
88: struct command cm_count = {"Number of lines to display", cmd_count};
1.1 deraadt 89:
1.38 canacar 90:
91: /* display functions */
1.3 deraadt 92:
1.2 deraadt 93: int
1.38 canacar 94: print_header(void)
1.1 deraadt 95: {
1.50 canacar 96: time_t now;
1.40 deraadt 97: int start = dispstart + 1, end = dispstart + maxprint;
1.58 lum 98: char tmpbuf[TIMEPOS];
99: char header[MAX_LINE_BUF];
1.38 canacar 100:
101: if (end > num_disp)
102: end = num_disp;
103:
104: tb_start();
1.35 deraadt 105:
1.58 lum 106: if (!paused) {
1.65 tedu 107: char *ctim;
108:
1.58 lum 109: getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
1.38 canacar 110:
1.58 lum 111: snprintf(uloadbuf, sizeof(uloadbuf),
1.66 otto 112: "%4d users Load %.2f %.2f %.2f",
1.58 lum 113: ucount(), avenrun[0], avenrun[1], avenrun[2]);
1.25 deraadt 114:
1.58 lum 115: time(&now);
1.65 tedu 116: ctim = ctime(&now);
117: ctim[11+8] = '\0';
118: strlcpy(timebuf, ctim + 11, sizeof(timebuf));
1.58 lum 119: }
1.25 deraadt 120:
1.58 lum 121: if (num_disp && (start > 1 || end != num_disp))
122: snprintf(tmpbuf, sizeof(tmpbuf),
123: "%s (%u-%u of %u) %s", uloadbuf, start, end, num_disp,
124: paused ? "PAUSED" : "");
125: else
126: snprintf(tmpbuf, sizeof(tmpbuf),
127: "%s %s", uloadbuf,
128: paused ? "PAUSED" : "");
129:
1.66 otto 130: snprintf(header, sizeof(header), "%-*s %19.19s %s", TIMEPOS - 1,
131: tmpbuf, hostname, timebuf);
1.58 lum 132:
133: if (rawmode)
134: printf("\n\n%s\n", header);
135: else
136: mvprintw(0, 0, "%s", header);
1.24 deraadt 137:
1.38 canacar 138: return (1);
1.1 deraadt 139: }
1.3 deraadt 140:
1.38 canacar 141: /* compatibility functions, rearrange later */
1.21 deraadt 142: void
1.38 canacar 143: error(const char *fmt, ...)
1.21 deraadt 144: {
1.38 canacar 145: va_list ap;
146: char buf[MAX_LINE_BUF];
147:
148: va_start(ap, fmt);
149: vsnprintf(buf, sizeof buf, fmt, ap);
150: va_end(ap);
1.21 deraadt 151:
1.38 canacar 152: message_set(buf);
1.21 deraadt 153: }
154:
1.38 canacar 155: void
156: nlisterr(struct nlist namelist[])
1.3 deraadt 157: {
1.38 canacar 158: int i, n;
159:
160: n = 0;
161: clear();
162: mvprintw(2, 10, "systat: nlist: can't find following symbols:");
163: for (i = 0;
164: namelist[i].n_name != NULL && *namelist[i].n_name != '\0'; i++)
165: if (namelist[i].n_value == 0)
166: mvprintw(2 + ++n, 10, "%s", namelist[i].n_name);
167: move(CMDLINE, 0);
168: clrtoeol();
169: refresh();
170: endwin();
1.3 deraadt 171: exit(1);
172: }
173:
1.1 deraadt 174: void
1.38 canacar 175: die(void)
1.1 deraadt 176: {
1.38 canacar 177: if (!rawmode)
178: endwin();
179: exit(0);
1.1 deraadt 180: }
181:
1.38 canacar 182:
183: int
184: prefix(char *s1, char *s2)
1.1 deraadt 185: {
1.38 canacar 186:
187: while (*s1 == *s2) {
188: if (*s1 == '\0')
189: return (1);
190: s1++, s2++;
191: }
192: return (*s1 == '\0');
1.21 deraadt 193: }
194:
1.38 canacar 195: /* calculate number of users on the system */
196: int
197: ucount(void)
1.21 deraadt 198: {
1.38 canacar 199: int nusers = 0;
200: struct utmp utmp;
1.35 deraadt 201:
1.38 canacar 202: if (ut < 0)
203: return (0);
204: lseek(ut, (off_t)0, SEEK_SET);
205: while (read(ut, &utmp, sizeof(utmp)))
206: if (utmp.ut_name[0] != '\0')
207: nusers++;
1.35 deraadt 208:
1.38 canacar 209: return (nusers);
1.1 deraadt 210: }
211:
1.38 canacar 212: /* main program functions */
213:
1.1 deraadt 214: void
1.50 canacar 215: usage(void)
1.1 deraadt 216: {
1.38 canacar 217: extern char *__progname;
1.72 martijn 218: fprintf(stderr, "usage: %s [-aBbhiNn] [-d count] "
1.43 matthieu 219: "[-s delay] [-w width] [view] [delay]\n", __progname);
1.38 canacar 220: exit(1);
1.1 deraadt 221: }
222:
1.45 canacar 223: void
224: show_view(void)
225: {
226: if (rawmode)
227: return;
228:
229: tb_start();
230: tbprintf("%s %g", curr_view->name, naptime);
231: tb_end();
232: message_set(tmp_buf);
233: }
1.21 deraadt 234:
1.1 deraadt 235: void
1.38 canacar 236: add_view_tb(field_view *v)
1.1 deraadt 237: {
1.38 canacar 238: if (curr_view == v)
239: tbprintf("[%s] ", v->name);
240: else
241: tbprintf("%s ", v->name);
1.29 deraadt 242: }
243:
244: void
1.38 canacar 245: show_help(void)
1.29 deraadt 246: {
1.38 canacar 247: if (rawmode)
248: return;
249:
250: tb_start();
251: foreach_view(add_view_tb);
252: tb_end();
253: message_set(tmp_buf);
1.21 deraadt 254: }
255:
256: void
1.67 martijn 257: add_order_tb(order_type *o)
258: {
259: if (curr_view->mgr->order_curr == o)
260: tbprintf("[%s%s(%c)] ", o->name,
261: o->func != NULL && sortdir == -1 ? "^" : "",
262: (char) o->hotkey);
263: else
264: tbprintf("%s(%c) ", o->name, (char) o->hotkey);
265: }
266:
267: void
268: show_order(void)
269: {
270: if (rawmode)
271: return;
272:
273: tb_start();
274: if (foreach_order(add_order_tb) == -1) {
275: tbprintf("No orders available");
276: }
277: tb_end();
278: message_set(tmp_buf);
279: }
280:
281: void
1.46 canacar 282: cmd_compat(const char *buf)
1.21 deraadt 283: {
1.46 canacar 284: const char *s;
1.38 canacar 285:
1.46 canacar 286: if (strcasecmp(buf, "help") == 0) {
1.74 martijn 287: message_toggle(MESSAGE_HELP);
1.38 canacar 288: return;
289: }
1.46 canacar 290: if (strcasecmp(buf, "quit") == 0 || strcasecmp(buf, "q") == 0) {
1.38 canacar 291: gotsig_close = 1;
292: return;
293: }
1.46 canacar 294: if (strcasecmp(buf, "stop") == 0) {
295: paused = 1;
296: gotsig_alarm = 1;
297: return;
298: }
299: if (strncasecmp(buf, "start", 5) == 0) {
300: paused = 0;
301: gotsig_alarm = 1;
1.47 canacar 302: cmd_delay(buf + 5);
1.67 martijn 303: return;
304: }
305: if (strncasecmp(buf, "order", 5) == 0) {
1.74 martijn 306: message_toggle(MESSAGE_ORDER);
1.46 canacar 307: return;
308: }
1.72 martijn 309: if (strncasecmp(buf, "human", 5) == 0) {
310: humanreadable = !humanreadable;
311: return;
312: }
1.38 canacar 313:
1.46 canacar 314: for (s = buf; *s && strchr("0123456789+-.eE", *s) != NULL; s++)
1.38 canacar 315: ;
316: if (*s) {
1.46 canacar 317: if (set_view(buf))
1.49 espie 318: error("Invalid/ambiguous view: %s", buf);
1.38 canacar 319: } else
1.46 canacar 320: cmd_delay(buf);
1.38 canacar 321: }
322:
323: void
1.46 canacar 324: cmd_delay(const char *buf)
1.38 canacar 325: {
326: double del;
1.73 martijn 327: const char *errstr;
1.39 canacar 328:
1.73 martijn 329: if (buf[0] == '\0')
330: return;
331: del = strtodnum(buf, 0, UINT32_MAX / 1000000, &errstr);
332: if (errstr != NULL)
333: error("s: \"%s\": delay value is %s", buf, errstr);
334: else {
1.75 ! millert 335: refresh_delay(del);
1.38 canacar 336: gotsig_alarm = 1;
1.39 canacar 337: naptime = del;
1.13 deraadt 338: }
1.1 deraadt 339: }
1.14 kstailey 340:
341: void
1.46 canacar 342: cmd_count(const char *buf)
1.14 kstailey 343: {
1.63 deraadt 344: const char *errstr;
1.38 canacar 345:
1.63 deraadt 346: maxprint = strtonum(buf, 1, lines - HEADER_LINES, &errstr);
347: if (errstr)
1.38 canacar 348: maxprint = lines - HEADER_LINES;
1.14 kstailey 349: }
350:
1.38 canacar 351:
352: int
353: keyboard_callback(int ch)
1.1 deraadt 354: {
1.38 canacar 355: switch (ch) {
356: case '?':
357: /* FALLTHROUGH */
358: case 'h':
1.74 martijn 359: message_toggle(MESSAGE_HELP);
1.45 canacar 360: break;
361: case CTRL_G:
1.74 martijn 362: message_toggle(MESSAGE_VIEW);
1.38 canacar 363: break;
364: case 'l':
365: command_set(&cm_count, NULL);
366: break;
367: case 's':
368: command_set(&cm_delay, NULL);
1.59 mpf 369: break;
370: case ',':
371: separate_thousands = !separate_thousands;
372: gotsig_alarm = 1;
1.38 canacar 373: break;
374: case ':':
375: command_set(&cm_compat, NULL);
376: break;
377: default:
378: return 0;
379: };
380:
381: return 1;
382: }
1.23 millert 383:
1.38 canacar 384: void
385: initialize(void)
386: {
387: engine_initialize();
388:
389: initvmstat();
390: initpigs();
391: initifstat();
392: initiostat();
393: initsensors();
394: initmembufs();
395: initnetstat();
396: initswap();
397: initpftop();
398: initpf();
1.48 canacar 399: initpool();
1.51 canacar 400: initmalloc();
1.52 jasper 401: initnfs();
1.60 reyk 402: initcpu();
1.68 krw 403: inituvm();
1.1 deraadt 404: }
405:
406: void
1.38 canacar 407: gethz(void)
1.1 deraadt 408: {
1.38 canacar 409: struct clockinfo cinf;
410: size_t size = sizeof(cinf);
411: int mib[2];
1.1 deraadt 412:
1.38 canacar 413: mib[0] = CTL_KERN;
414: mib[1] = KERN_CLOCKRATE;
415: if (sysctl(mib, 2, &cinf, &size, NULL, 0) == -1)
416: return;
417: stathz = cinf.stathz;
418: hz = cinf.hz;
1.35 deraadt 419: }
420:
1.73 martijn 421: #define INVALID 1
422: #define TOOSMALL 2
423: #define TOOLARGE 3
424:
425: double
426: strtodnum(const char *nptr, double minval, double maxval, const char **errstrp)
427: {
428: double d = 0;
429: int error = 0;
430: char *ep;
431: struct errval {
432: const char *errstr;
433: int err;
434: } ev[4] = {
435: { NULL, 0 },
436: { "invalid", EINVAL },
437: { "too small", ERANGE },
438: { "too large", ERANGE },
439: };
440:
441: ev[0].err = errno;
442: errno = 0;
443: if (minval > maxval) {
444: error = INVALID;
445: } else {
446: d = strtod(nptr, &ep);
447: if (nptr == ep || *ep != '\0')
448: error = INVALID;
449: else if ((d == -HUGE_VAL && errno == ERANGE) || d < minval)
450: error = TOOSMALL;
451: else if ((d == HUGE_VAL && errno == ERANGE) || d > maxval)
452: error = TOOLARGE;
453: }
454: if (errstrp != NULL)
455: *errstrp = ev[error].errstr;
456: errno = ev[error].err;
457: if (error)
458: d = 0;
459:
460: return (d);
461: }
462:
1.35 deraadt 463: int
1.38 canacar 464: main(int argc, char *argv[])
1.35 deraadt 465: {
1.38 canacar 466: char errbuf[_POSIX2_LINE_MAX];
1.63 deraadt 467: const char *errstr;
1.38 canacar 468: extern char *optarg;
469: extern int optind;
1.73 martijn 470: double delay = 5, del;
1.38 canacar 471:
472: char *viewstr = NULL;
473:
474: gid_t gid;
475: int countmax = 0;
476: int maxlines = 0;
477:
478: int ch;
479:
480: ut = open(_PATH_UTMP, O_RDONLY);
1.70 deraadt 481: if (ut == -1) {
1.38 canacar 482: warn("No utmp");
483: }
484:
1.62 claudio 485: kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
1.38 canacar 486:
487: gid = getgid();
488: if (setresgid(gid, gid, gid) == -1)
489: err(1, "setresgid");
490:
1.72 martijn 491: while ((ch = getopt(argc, argv, "BNabd:hins:w:")) != -1) {
1.38 canacar 492: switch (ch) {
493: case 'a':
494: maxlines = -1;
495: break;
1.60 reyk 496: case 'B':
497: averageonly = 1;
498: if (countmax < 2)
499: countmax = 2;
500: /* FALLTHROUGH */
1.38 canacar 501: case 'b':
502: rawmode = 1;
503: interactive = 0;
504: break;
505: case 'd':
1.63 deraadt 506: countmax = strtonum(optarg, 1, INT_MAX, &errstr);
507: if (errstr)
508: errx(1, "-d %s: %s", optarg, errstr);
1.72 martijn 509: break;
510: case 'h':
511: humanreadable = 1;
1.38 canacar 512: break;
513: case 'i':
514: interactive = 1;
515: break;
1.55 sthen 516: case 'N':
517: nflag = 0;
518: break;
1.38 canacar 519: case 'n':
1.55 sthen 520: /* this is a noop, -n is the default */
1.38 canacar 521: nflag = 1;
522: break;
523: case 's':
1.73 martijn 524: delay = strtodnum(optarg, 0, UINT32_MAX / 1000000,
525: &errstr);
526: if (errstr != NULL)
527: errx(1, "-s \"%s\": delay value is %s", optarg,
528: errstr);
1.38 canacar 529: break;
530: case 'w':
1.63 deraadt 531: rawwidth = strtonum(optarg, 1, MAX_LINE_BUF-1, &errstr);
532: if (errstr)
533: errx(1, "-w %s: %s", optarg, errstr);
1.38 canacar 534: break;
535: default:
536: usage();
537: /* NOTREACHED */
538: }
539: }
1.43 matthieu 540:
541: if (kd == NULL)
542: warnx("kvm_openfiles: %s", errbuf);
1.38 canacar 543:
544: argc -= optind;
545: argv += optind;
546:
547: if (argc == 1) {
1.73 martijn 548: del = strtodnum(argv[0], 0, UINT32_MAX / 1000000, &errstr);
549: if (errstr != NULL)
1.38 canacar 550: viewstr = argv[0];
551: else
552: delay = del;
553: } else if (argc == 2) {
554: viewstr = argv[0];
1.73 martijn 555: delay = strtodnum(argv[1], 0, UINT32_MAX / 1000000, &errstr);
556: if (errstr != NULL)
557: errx(1, "\"%s\": delay value is %s", argv[1], errstr);
1.38 canacar 558: }
559:
1.75 ! millert 560: refresh_delay(delay);
! 561: naptime = delay;
1.38 canacar 562:
563: gethostname(hostname, sizeof (hostname));
564: gethz();
565:
566: initialize();
567:
568: set_order(NULL);
569: if (viewstr && set_view(viewstr)) {
1.49 espie 570: fprintf(stderr, "Unknown/ambiguous view name: %s\n", viewstr);
1.38 canacar 571: return 1;
572: }
573:
1.57 lum 574: if (check_termcap()) {
1.38 canacar 575: rawmode = 1;
576: interactive = 0;
577: }
578:
579: setup_term(maxlines);
1.71 deraadt 580:
581: if (unveil("/", "r") == -1)
582: err(1, "unveil");
583: if (unveil(NULL, NULL) == -1)
584: err(1, "unveil");
1.38 canacar 585:
586: if (rawmode && countmax == 0)
587: countmax = 1;
588:
589: gotsig_alarm = 1;
1.35 deraadt 590:
1.38 canacar 591: engine_loop(countmax);
1.35 deraadt 592:
1.38 canacar 593: return 0;
1.1 deraadt 594: }
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