summaryrefslogtreecommitdiffstats
path: root/usr.sbin/sa/main.c
blob: fe7de23f770a39b09d936d68dcd9a03309f09b54 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
/*
 * Copyright (c) 1994 Christopher G. Demetriou
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Christopher G. Demetriou.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#if 0
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1994 Christopher G. Demetriou\n\
 All rights reserved.\n";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * sa:	system accounting
 */

#include <sys/types.h>
#include <sys/acct.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
#include "pathnames.h"

static int	acct_load(char *, int);
static u_quad_t	decode_comp_t(comp_t);
static int	cmp_comm(const char *, const char *);
static int	cmp_usrsys(const DBT *, const DBT *);
static int	cmp_avgusrsys(const DBT *, const DBT *);
static int	cmp_dkio(const DBT *, const DBT *);
static int	cmp_avgdkio(const DBT *, const DBT *);
static int	cmp_cpumem(const DBT *, const DBT *);
static int	cmp_avgcpumem(const DBT *, const DBT *);
static int	cmp_calls(const DBT *, const DBT *);
static void	usage(void);

int aflag, bflag, cflag, dflag, Dflag, fflag, iflag, jflag, kflag;
int Kflag, lflag, mflag, qflag, rflag, sflag, tflag, uflag, vflag;
u_quad_t cutoff = 1;

static char	*dfltargv[] = { NULL };
static int	dfltargc = (sizeof dfltargv/sizeof(char *));

/* default to comparing by sum of user + system time */
cmpf_t   sa_cmp = cmp_usrsys;

int
main(int argc, char **argv)
{
	char pathacct[] = _PATH_ACCT;
	int ch, error = 0;

	dfltargv[0] = pathacct;

	while ((ch = getopt(argc, argv, "abcdDfijkKlmnqrstuv:")) != -1)
		switch (ch) {
			case 'a':
				/* print all commands */
				aflag = 1;
				break;
			case 'b':
				/* sort by per-call user/system time average */
				bflag = 1;
				sa_cmp = cmp_avgusrsys;
				break;
			case 'c':
				/* print percentage total time */
				cflag = 1;
				break;
			case 'd':
				/* sort by averge number of disk I/O ops */
				dflag = 1;
				sa_cmp = cmp_avgdkio;
				break;
			case 'D':
				/* print and sort by total disk I/O ops */
				Dflag = 1;
				sa_cmp = cmp_dkio;
				break;
			case 'f':
				/* force no interactive threshold comprison */
				fflag = 1;
				break;
			case 'i':
				/* do not read in summary file */
				iflag = 1;
				break;
			case 'j':
				/* instead of total minutes, give sec/call */
				jflag = 1;
				break;
			case 'k':
				/* sort by cpu-time average memory usage */
				kflag = 1;
				sa_cmp = cmp_avgcpumem;
				break;
			case 'K':
				/* print and sort by cpu-storage integral */
				sa_cmp = cmp_cpumem;
				Kflag = 1;
				break;
			case 'l':
				/* separate system and user time */
				lflag = 1;
				break;
			case 'm':
				/* print procs and time per-user */
				mflag = 1;
				break;
			case 'n':
				/* sort by number of calls */
				sa_cmp = cmp_calls;
				break;
			case 'q':
				/* quiet; error messages only */
				qflag = 1;
				break;
			case 'r':
				/* reverse order of sort */
				rflag = 1;
				break;
			case 's':
				/* merge accounting file into summaries */
				sflag = 1;
				break;
			case 't':
				/* report ratio of user and system times */
				tflag = 1;
				break;
			case 'u':
				/* first, print uid and command name */
				uflag = 1;
				break;
			case 'v':
				/* cull junk */
				vflag = 1;
				cutoff = atoi(optarg);
				break;
			case '?':
	                default:
				usage();
		}

	argc -= optind;
	argv += optind;

	/* various argument checking */
	if (fflag && !vflag)
		errx(1, "only one of -f requires -v");
	if (fflag && aflag)
		errx(1, "only one of -a and -v may be specified");
	/* XXX need more argument checking */

	if (!uflag) {
		/* initialize tables */
		if ((sflag || (!mflag && !qflag)) && pacct_init() != 0)
			errx(1, "process accounting initialization failed");
		if ((sflag || (mflag && !qflag)) && usracct_init() != 0)
			errx(1, "user accounting initialization failed");
	}

	if (argc == 0) {
		argc = dfltargc;
		argv = dfltargv;
	}

	/* for each file specified */
	for (; argc > 0; argc--, argv++) {
		int	fd;

		/*
		 * load the accounting data from the file.
		 * if it fails, go on to the next file.
		 */
		fd = acct_load(argv[0], sflag);
		if (fd < 0)
			continue;

		if (!uflag && sflag) {
#ifndef DEBUG
			sigset_t nmask, omask;
			int unmask = 1;

			/*
			 * block most signals so we aren't interrupted during
			 * the update.
			 */
			if (sigfillset(&nmask) == -1) {
				warn("sigfillset");
				unmask = 0;
				error = 1;
			}
			if (unmask &&
			    (sigprocmask(SIG_BLOCK, &nmask, &omask) == -1)) {
				warn("couldn't set signal mask");
				unmask = 0;
				error = 1;
			}
#endif /* DEBUG */

			/*
			 * truncate the accounting data file ASAP, to avoid
			 * losing data.  don't worry about errors in updating
			 * the saved stats; better to underbill than overbill,
			 * but we want every accounting record intact.
			 */
			if (ftruncate(fd, 0) == -1) {
				warn("couldn't truncate %s", *argv);
				error = 1;
			}

			/*
			 * update saved user and process accounting data.
			 * note errors for later.
			 */
			if (pacct_update() != 0 || usracct_update() != 0)
				error = 1;

#ifndef DEBUG
			/*
			 * restore signals
			 */
			if (unmask &&
			    (sigprocmask(SIG_SETMASK, &omask, NULL) == -1)) {
				warn("couldn't restore signal mask");
				error = 1;
			}
#endif /* DEBUG */
		}

		/*
		 * close the opened accounting file
		 */
		if (close(fd) == -1) {
			warn("close %s", *argv);
			error = 1;
		}
	}

	if (!uflag && !qflag) {
		/* print any results we may have obtained. */
		if (!mflag)
			pacct_print();
		else
			usracct_print();
	}

	if (!uflag) {
		/* finally, deallocate databases */
		if (sflag || (!mflag && !qflag))
			pacct_destroy();
		if (sflag || (mflag && !qflag))
			usracct_destroy();
	}

	exit(error);
}

static void
usage()
{
	(void)fprintf(stderr,
		"usage: sa [-abcdDfijkKlmnqrstu] [-v cutoff] [file ...]\n");
	exit(1);
}

static int
acct_load(pn, wr)
	char *pn;
	int wr;
{
	struct acct ac;
	struct cmdinfo ci;
	ssize_t rv;
	int fd, i;

	/*
	 * open the file
	 */
	fd = open(pn, wr ? O_RDWR : O_RDONLY, 0);
	if (fd == -1) {
		warn("open %s %s", pn, wr ? "for read/write" : "read-only");
		return (-1);
	}

	/*
	 * read all we can; don't stat and open because more processes
	 * could exit, and we'd miss them
	 */
	while (1) {
		/* get one accounting entry and punt if there's an error */
		rv = read(fd, &ac, sizeof(struct acct));
		if (rv == -1)
			warn("error reading %s", pn);
		else if (rv > 0 && rv < (int)sizeof(struct acct))
			warnx("short read of accounting data in %s", pn);
		if (rv != sizeof(struct acct))
			break;

		/* decode it */
		ci.ci_calls = 1;
		for (i = 0; i < (int)sizeof ac.ac_comm && ac.ac_comm[i] != '\0';
		    i++) {
			char c = ac.ac_comm[i];

			if (!isascii(c) || iscntrl(c)) {
				ci.ci_comm[i] = '?';
				ci.ci_flags |= CI_UNPRINTABLE;
			} else
				ci.ci_comm[i] = c;
		}
		if (ac.ac_flag & AFORK)
			ci.ci_comm[i++] = '*';
		ci.ci_comm[i++] = '\0';
		ci.ci_etime = decode_comp_t(ac.ac_etime);
		ci.ci_utime = decode_comp_t(ac.ac_utime);
		ci.ci_stime = decode_comp_t(ac.ac_stime);
		ci.ci_uid = ac.ac_uid;
		ci.ci_mem = ac.ac_mem;
		ci.ci_io = decode_comp_t(ac.ac_io) / AHZ;

		if (!uflag) {
			/* and enter it into the usracct and pacct databases */
			if (sflag || (!mflag && !qflag))
				pacct_add(&ci);
			if (sflag || (mflag && !qflag))
				usracct_add(&ci);
		} else if (!qflag)
			printf("%6lu %12.2f cpu %12juk mem %12ju io %s\n",
			    ci.ci_uid,
			    (ci.ci_utime + ci.ci_stime) / (double) AHZ,
			    (uintmax_t)ci.ci_mem, (uintmax_t)ci.ci_io,
			    ci.ci_comm);
	}

	/* finally, return the file descriptor for possible truncation */
	return (fd);
}

static u_quad_t
decode_comp_t(comp)
	comp_t comp;
{
	u_quad_t rv;

	/*
	 * for more info on the comp_t format, see:
	 *	/usr/src/sys/kern/kern_acct.c
	 *	/usr/src/sys/sys/acct.h
	 *	/usr/src/usr.bin/lastcomm/lastcomm.c
	 */
	rv = comp & 0x1fff;	/* 13 bit fraction */
	comp >>= 13;		/* 3 bit base-8 exponent */
	while (comp--)
		rv <<= 3;

	return (rv);
}

/* sort commands, doing the right thing in terms of reversals */
static int
cmp_comm(s1, s2)
	const char *s1, *s2;
{
	int rv;

	rv = strcmp(s1, s2);
	if (rv == 0)
		rv = -1;
	return (rflag ? rv : -rv);
}

/* sort by total user and system time */
static int
cmp_usrsys(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;
	u_quad_t t1, t2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	t1 = c1.ci_utime + c1.ci_stime;
	t2 = c2.ci_utime + c2.ci_stime;

	if (t1 < t2)
		return -1;
	else if (t1 == t2)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}

/* sort by average user and system time */
static int
cmp_avgusrsys(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;
	double t1, t2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	t1 = c1.ci_utime + c1.ci_stime;
	t1 /= (double) (c1.ci_calls ? c1.ci_calls : 1);

	t2 = c2.ci_utime + c2.ci_stime;
	t2 /= (double) (c2.ci_calls ? c2.ci_calls : 1);

	if (t1 < t2)
		return -1;
	else if (t1 == t2)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}

/* sort by total number of disk I/O operations */
static int
cmp_dkio(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	if (c1.ci_io < c2.ci_io)
		return -1;
	else if (c1.ci_io == c2.ci_io)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}

/* sort by average number of disk I/O operations */
static int
cmp_avgdkio(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;
	double n1, n2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	n1 = (double) c1.ci_io / (double) (c1.ci_calls ? c1.ci_calls : 1);
	n2 = (double) c2.ci_io / (double) (c2.ci_calls ? c2.ci_calls : 1);

	if (n1 < n2)
		return -1;
	else if (n1 == n2)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}

/* sort by the cpu-storage integral */
static int
cmp_cpumem(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	if (c1.ci_mem < c2.ci_mem)
		return -1;
	else if (c1.ci_mem == c2.ci_mem)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}

/* sort by the cpu-time average memory usage */
static int
cmp_avgcpumem(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;
	u_quad_t t1, t2;
	double n1, n2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	t1 = c1.ci_utime + c1.ci_stime;
	t2 = c2.ci_utime + c2.ci_stime;

	n1 = (double) c1.ci_mem / (double) (t1 ? t1 : 1);
	n2 = (double) c2.ci_mem / (double) (t2 ? t2 : 1);

	if (n1 < n2)
		return -1;
	else if (n1 == n2)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}

/* sort by the number of invocations */
static int
cmp_calls(d1, d2)
	const DBT *d1, *d2;
{
	struct cmdinfo c1, c2;

	memcpy(&c1, d1->data, sizeof(c1));
	memcpy(&c2, d2->data, sizeof(c2));

	if (c1.ci_calls < c2.ci_calls)
		return -1;
	else if (c1.ci_calls == c2.ci_calls)
		return (cmp_comm(c1.ci_comm, c2.ci_comm));
	else
		return 1;
}
OpenPOWER on IntegriCloud