main.c revision 1.7
1 /* 2 * Copyright (c) 1994 Christopher G. Demetriou 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Christopher G. Demetriou. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 #ifndef lint 33 __COPYRIGHT("@(#) Copyright (c) 1994 Christopher G. Demetriou\n\ 34 All rights reserved.\n"); 35 36 __RCSID("$NetBSD: main.c,v 1.7 1997/10/18 03:57:25 lukem Exp $"); 37 #endif 38 39 /* 40 * sa: system accounting 41 */ 42 43 #include <sys/types.h> 44 #include <sys/acct.h> 45 #include <ctype.h> 46 #include <err.h> 47 #include <fcntl.h> 48 #include <signal.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 #include "extern.h" 54 #include "pathnames.h" 55 56 static int acct_load __P((char *, int)); 57 static u_quad_t decode_comp_t __P((comp_t)); 58 static int cmp_comm __P((const char *, const char *)); 59 static int cmp_usrsys __P((const DBT *, const DBT *)); 60 static int cmp_avgusrsys __P((const DBT *, const DBT *)); 61 static int cmp_dkio __P((const DBT *, const DBT *)); 62 static int cmp_avgdkio __P((const DBT *, const DBT *)); 63 static int cmp_cpumem __P((const DBT *, const DBT *)); 64 static int cmp_avgcpumem __P((const DBT *, const DBT *)); 65 static int cmp_calls __P((const DBT *, const DBT *)); 66 67 int aflag, bflag, cflag, dflag, Dflag, fflag, iflag, jflag, kflag; 68 int Kflag, lflag, mflag, qflag, rflag, sflag, tflag, uflag, vflag; 69 int cutoff = 1; 70 71 static char *dfltargv[] = { _PATH_ACCT }; 72 static int dfltargc = (sizeof(dfltargv)/sizeof(char *)); 73 74 /* default to comparing by sum of user + system time */ 75 cmpf_t sa_cmp = cmp_usrsys; 76 77 int 78 main(argc, argv) 79 int argc; 80 char **argv; 81 { 82 int ch; 83 int error; 84 85 error = 0; 86 while ((ch = getopt(argc, argv, "abcdDfijkKlmnqrstuv:")) != -1) 87 switch (ch) { 88 case 'a': 89 /* print all commands */ 90 aflag = 1; 91 break; 92 case 'b': 93 /* sort by per-call user/system time average */ 94 bflag = 1; 95 sa_cmp = cmp_avgusrsys; 96 break; 97 case 'c': 98 /* print percentage total time */ 99 cflag = 1; 100 break; 101 case 'd': 102 /* sort by averge number of disk I/O ops */ 103 dflag = 1; 104 sa_cmp = cmp_avgdkio; 105 break; 106 case 'D': 107 /* print and sort by total disk I/O ops */ 108 Dflag = 1; 109 sa_cmp = cmp_dkio; 110 break; 111 case 'f': 112 /* force no interactive threshold comprison */ 113 fflag = 1; 114 break; 115 case 'i': 116 /* do not read in summary file */ 117 iflag = 1; 118 break; 119 case 'j': 120 /* instead of total minutes, give sec/call */ 121 jflag = 1; 122 break; 123 case 'k': 124 /* sort by cpu-time average memory usage */ 125 kflag = 1; 126 sa_cmp = cmp_avgcpumem; 127 break; 128 case 'K': 129 /* print and sort by cpu-storage integral */ 130 sa_cmp = cmp_cpumem; 131 Kflag = 1; 132 break; 133 case 'l': 134 /* seperate system and user time */ 135 lflag = 1; 136 break; 137 case 'm': 138 /* print procs and time per-user */ 139 mflag = 1; 140 break; 141 case 'n': 142 /* sort by number of calls */ 143 sa_cmp = cmp_calls; 144 break; 145 case 'q': 146 /* quiet; error messages only */ 147 qflag = 1; 148 break; 149 case 'r': 150 /* reverse order of sort */ 151 rflag = 1; 152 break; 153 case 's': 154 /* merge accounting file into summaries */ 155 sflag = 1; 156 break; 157 case 't': 158 /* report ratio of user and system times */ 159 tflag = 1; 160 break; 161 case 'u': 162 /* first, print uid and command name */ 163 uflag = 1; 164 break; 165 case 'v': 166 /* cull junk */ 167 vflag = 1; 168 cutoff = atoi(optarg); 169 break; 170 case '?': 171 default: 172 (void)fprintf(stderr, 173 "usage: sa [-abcdDfijkKlmnqrstu] [-v cutoff] [file ...]\n"); 174 exit(1); 175 } 176 177 argc -= optind; 178 argv += optind; 179 180 /* various argument checking */ 181 if (fflag && !vflag) 182 errx(1, "only one of -f requires -v"); 183 if (fflag && aflag) 184 errx(1, "only one of -a and -v may be specified"); 185 /* XXX need more argument checking */ 186 187 if (!uflag) { 188 /* initialize tables */ 189 if ((sflag || (!mflag && !qflag)) && pacct_init() != 0) 190 errx(1, "process accounting initialization failed"); 191 if ((sflag || (mflag && !qflag)) && usracct_init() != 0) 192 errx(1, "user accounting initialization failed"); 193 } 194 195 if (argc == 0) { 196 argc = dfltargc; 197 argv = dfltargv; 198 } 199 200 /* for each file specified */ 201 for (; argc > 0; argc--, argv++) { 202 int fd; 203 204 /* 205 * load the accounting data from the file. 206 * if it fails, go on to the next file. 207 */ 208 fd = acct_load(argv[0], sflag); 209 if (fd < 0) 210 continue; 211 212 if (!uflag && sflag) { 213 #ifndef DEBUG 214 sigset_t nmask, omask; 215 int unmask = 1; 216 217 /* 218 * block most signals so we aren't interrupted during 219 * the update. 220 */ 221 if (sigfillset(&nmask) == -1) { 222 warn("sigfillset"); 223 unmask = 0; 224 error = 1; 225 } 226 if (unmask && 227 (sigprocmask(SIG_BLOCK, &nmask, &omask) == -1)) { 228 warn("couldn't set signal mask "); 229 unmask = 0; 230 error = 1; 231 } 232 #endif /* DEBUG */ 233 234 /* 235 * truncate the accounting data file ASAP, to avoid 236 * losing data. don't worry about errors in updating 237 * the saved stats; better to underbill than overbill, 238 * but we want every accounting record intact. 239 */ 240 if (ftruncate(fd, 0) == -1) { 241 warn("couldn't truncate %s", *argv); 242 error = 1; 243 } 244 245 /* 246 * update saved user and process accounting data. 247 * note errors for later. 248 */ 249 if (pacct_update() != 0 || usracct_update() != 0) 250 error = 1; 251 252 #ifndef DEBUG 253 /* 254 * restore signals 255 */ 256 if (unmask && 257 (sigprocmask(SIG_SETMASK, &omask, NULL) == -1)) { 258 warn("couldn't restore signal mask"); 259 error = 1; 260 } 261 #endif /* DEBUG */ 262 } 263 264 /* 265 * close the opened accounting file 266 */ 267 if (close(fd) == -1) { 268 warn("close %s", *argv); 269 error = 1; 270 } 271 } 272 273 if (!uflag && !qflag) { 274 /* print any results we may have obtained. */ 275 if (!mflag) 276 pacct_print(); 277 else 278 usracct_print(); 279 } 280 281 if (!uflag) { 282 /* finally, deallocate databases */ 283 if (sflag || (!mflag && !qflag)) 284 pacct_destroy(); 285 if (sflag || (mflag && !qflag)) 286 usracct_destroy(); 287 } 288 289 exit(error); 290 } 291 292 static int 293 acct_load(pn, wr) 294 char *pn; 295 int wr; 296 { 297 struct acct ac; 298 struct cmdinfo ci; 299 ssize_t rv; 300 int fd, i; 301 302 /* 303 * open the file 304 */ 305 fd = open(pn, wr ? O_RDWR : O_RDONLY, 0); 306 if (fd == -1) { 307 warn("open %s %s", pn, wr ? "for read/write" : "read-only"); 308 return (-1); 309 } 310 311 /* 312 * read all we can; don't stat and open because more processes 313 * could exit, and we'd miss them 314 */ 315 while (1) { 316 /* get one accounting entry and punt if there's an error */ 317 rv = read(fd, &ac, sizeof(struct acct)); 318 if (rv == -1) 319 warn("error reading %s", pn); 320 else if (rv > 0 && rv < sizeof(struct acct)) 321 warnx("short read of accounting data in %s", pn); 322 if (rv != sizeof(struct acct)) 323 break; 324 325 /* decode it */ 326 ci.ci_calls = 1; 327 for (i = 0; i < sizeof(ac.ac_comm) && ac.ac_comm[i] != '\0'; 328 i++) { 329 char c = ac.ac_comm[i]; 330 331 if (!isascii(c) || iscntrl(c)) { 332 ci.ci_comm[i] = '?'; 333 ci.ci_flags |= CI_UNPRINTABLE; 334 } else 335 ci.ci_comm[i] = c; 336 } 337 if (ac.ac_flag & AFORK) 338 ci.ci_comm[i++] = '*'; 339 ci.ci_comm[i++] = '\0'; 340 ci.ci_etime = decode_comp_t(ac.ac_etime); 341 ci.ci_utime = decode_comp_t(ac.ac_utime); 342 ci.ci_stime = decode_comp_t(ac.ac_stime); 343 ci.ci_uid = ac.ac_uid; 344 ci.ci_mem = ac.ac_mem; 345 ci.ci_io = decode_comp_t(ac.ac_io) / AHZ; 346 347 if (!uflag) { 348 /* and enter it into the usracct and pacct databases */ 349 if (sflag || (!mflag && !qflag)) 350 pacct_add(&ci); 351 if (sflag || (mflag && !qflag)) 352 usracct_add(&ci); 353 } else if (!qflag) 354 printf("%6u %12.2f cpu %12quk mem %12qu io %s\n", 355 ci.ci_uid, 356 (ci.ci_utime + ci.ci_stime) / (double) AHZ, 357 ci.ci_mem, ci.ci_io, ci.ci_comm); 358 } 359 360 /* finally, return the file descriptor for possible truncation */ 361 return (fd); 362 } 363 364 static u_quad_t 365 decode_comp_t(comp) 366 comp_t comp; 367 { 368 u_quad_t rv; 369 370 /* 371 * for more info on the comp_t format, see: 372 * /usr/src/sys/kern/kern_acct.c 373 * /usr/src/sys/sys/acct.h 374 * /usr/src/usr.bin/lastcomm/lastcomm.c 375 */ 376 rv = comp & 0x1fff; /* 13 bit fraction */ 377 comp >>= 13; /* 3 bit base-8 exponent */ 378 while (comp--) 379 rv <<= 3; 380 381 return (rv); 382 } 383 384 /* sort commands, doing the right thing in terms of reversals */ 385 static int 386 cmp_comm(s1, s2) 387 const char *s1, *s2; 388 { 389 int rv; 390 391 rv = strcmp(s1, s2); 392 if (rv == 0) 393 rv = -1; 394 return (rflag ? rv : -rv); 395 } 396 397 /* sort by total user and system time */ 398 static int 399 cmp_usrsys(d1, d2) 400 const DBT *d1, *d2; 401 { 402 struct cmdinfo c1, c2; 403 u_quad_t t1, t2; 404 405 memcpy(&c1, d1->data, sizeof(c1)); 406 memcpy(&c2, d2->data, sizeof(c2)); 407 408 t1 = c1.ci_utime + c1.ci_stime; 409 t2 = c2.ci_utime + c2.ci_stime; 410 411 if (t1 < t2) 412 return -1; 413 else if (t1 == t2) 414 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 415 else 416 return 1; 417 } 418 419 /* sort by average user and system time */ 420 static int 421 cmp_avgusrsys(d1, d2) 422 const DBT *d1, *d2; 423 { 424 struct cmdinfo c1, c2; 425 double t1, t2; 426 427 memcpy(&c1, d1->data, sizeof(c1)); 428 memcpy(&c2, d2->data, sizeof(c2)); 429 430 t1 = c1.ci_utime + c1.ci_stime; 431 t1 /= (double) (c1.ci_calls ? c1.ci_calls : 1); 432 433 t2 = c2.ci_utime + c2.ci_stime; 434 t2 /= (double) (c2.ci_calls ? c2.ci_calls : 1); 435 436 if (t1 < t2) 437 return -1; 438 else if (t1 == t2) 439 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 440 else 441 return 1; 442 } 443 444 /* sort by total number of disk I/O operations */ 445 static int 446 cmp_dkio(d1, d2) 447 const DBT *d1, *d2; 448 { 449 struct cmdinfo c1, c2; 450 451 memcpy(&c1, d1->data, sizeof(c1)); 452 memcpy(&c2, d2->data, sizeof(c2)); 453 454 if (c1.ci_io < c2.ci_io) 455 return -1; 456 else if (c1.ci_io == c2.ci_io) 457 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 458 else 459 return 1; 460 } 461 462 /* sort by average number of disk I/O operations */ 463 static int 464 cmp_avgdkio(d1, d2) 465 const DBT *d1, *d2; 466 { 467 struct cmdinfo c1, c2; 468 double n1, n2; 469 470 memcpy(&c1, d1->data, sizeof(c1)); 471 memcpy(&c2, d2->data, sizeof(c2)); 472 473 n1 = (double) c1.ci_io / (double) (c1.ci_calls ? c1.ci_calls : 1); 474 n2 = (double) c2.ci_io / (double) (c2.ci_calls ? c2.ci_calls : 1); 475 476 if (n1 < n2) 477 return -1; 478 else if (n1 == n2) 479 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 480 else 481 return 1; 482 } 483 484 /* sort by the cpu-storage integral */ 485 static int 486 cmp_cpumem(d1, d2) 487 const DBT *d1, *d2; 488 { 489 struct cmdinfo c1, c2; 490 491 memcpy(&c1, d1->data, sizeof(c1)); 492 memcpy(&c2, d2->data, sizeof(c2)); 493 494 if (c1.ci_mem < c2.ci_mem) 495 return -1; 496 else if (c1.ci_mem == c2.ci_mem) 497 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 498 else 499 return 1; 500 } 501 502 /* sort by the cpu-time average memory usage */ 503 static int 504 cmp_avgcpumem(d1, d2) 505 const DBT *d1, *d2; 506 { 507 struct cmdinfo c1, c2; 508 u_quad_t t1, t2; 509 double n1, n2; 510 511 memcpy(&c1, d1->data, sizeof(c1)); 512 memcpy(&c2, d2->data, sizeof(c2)); 513 514 t1 = c1.ci_utime + c1.ci_stime; 515 t2 = c2.ci_utime + c2.ci_stime; 516 517 n1 = (double) c1.ci_mem / (double) (t1 ? t1 : 1); 518 n2 = (double) c2.ci_mem / (double) (t2 ? t2 : 1); 519 520 if (n1 < n2) 521 return -1; 522 else if (n1 == n2) 523 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 524 else 525 return 1; 526 } 527 528 /* sort by the number of invocations */ 529 static int 530 cmp_calls(d1, d2) 531 const DBT *d1, *d2; 532 { 533 struct cmdinfo c1, c2; 534 535 memcpy(&c1, d1->data, sizeof(c1)); 536 memcpy(&c2, d2->data, sizeof(c2)); 537 538 if (c1.ci_calls < c2.ci_calls) 539 return -1; 540 else if (c1.ci_calls == c2.ci_calls) 541 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 542 else 543 return 1; 544 } 545
Indexes created Tue Sep 23 21:09:50 GMT 2025