main.c revision 1.4
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 #ifndef LINT 32 static char copright[] = 33 "@(#) Copyright (c) 1994 Christopher G. Demetriou\n\ 34 All rights reserved.\n"; 35 36 static char rcsid[] = "$Id: main.c,v 1.4 1995/03/22 15:56:29 mycroft 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 <unistd.h> 52 #include "extern.h" 53 #include "pathnames.h" 54 55 static int acct_load __P((char *, int)); 56 static u_quad_t decode_comp_t __P((comp_t)); 57 static int cmp_comm __P((const char *, const char *)); 58 static int cmp_usrsys __P((const DBT *, const DBT *)); 59 static int cmp_avgusrsys __P((const DBT *, const DBT *)); 60 static int cmp_dkio __P((const DBT *, const DBT *)); 61 static int cmp_avgdkio __P((const DBT *, const DBT *)); 62 static int cmp_cpumem __P((const DBT *, const DBT *)); 63 static int cmp_avgcpumem __P((const DBT *, const DBT *)); 64 static int cmp_calls __P((const DBT *, const DBT *)); 65 66 int aflag, bflag, cflag, dflag, Dflag, fflag, iflag, jflag, kflag; 67 int Kflag, lflag, mflag, qflag, rflag, sflag, tflag, uflag, vflag; 68 int cutoff = 1; 69 70 static char *dfltargv[] = { _PATH_ACCT }; 71 static int dfltargc = (sizeof(dfltargv)/sizeof(char *)); 72 73 /* default to comparing by sum of user + system time */ 74 cmpf_t sa_cmp = cmp_usrsys; 75 76 int 77 main(argc, argv) 78 int argc; 79 char **argv; 80 { 81 char ch; 82 int error; 83 84 while ((ch = getopt(argc, argv, "abcdDfijkKlmnqrstuv:")) != -1) 85 switch (ch) { 86 case 'a': 87 /* print all commands */ 88 aflag = 1; 89 break; 90 case 'b': 91 /* sort by per-call user/system time average */ 92 bflag = 1; 93 sa_cmp = cmp_avgusrsys; 94 break; 95 case 'c': 96 /* print percentage total time */ 97 cflag = 1; 98 break; 99 case 'd': 100 /* sort by averge number of disk I/O ops */ 101 dflag = 1; 102 sa_cmp = cmp_avgdkio; 103 break; 104 case 'D': 105 /* print and sort by total disk I/O ops */ 106 Dflag = 1; 107 sa_cmp = cmp_dkio; 108 break; 109 case 'f': 110 /* force no interactive threshold comprison */ 111 fflag = 1; 112 break; 113 case 'i': 114 /* do not read in summary file */ 115 iflag = 1; 116 break; 117 case 'j': 118 /* instead of total minutes, give sec/call */ 119 jflag = 1; 120 break; 121 case 'k': 122 /* sort by cpu-time average memory usage */ 123 kflag = 1; 124 sa_cmp = cmp_avgcpumem; 125 break; 126 case 'K': 127 /* print and sort by cpu-storage integral */ 128 sa_cmp = cmp_cpumem; 129 Kflag = 1; 130 break; 131 case 'l': 132 /* seperate system and user time */ 133 lflag = 1; 134 break; 135 case 'm': 136 /* print procs and time per-user */ 137 mflag = 1; 138 break; 139 case 'n': 140 /* sort by number of calls */ 141 sa_cmp = cmp_calls; 142 break; 143 case 'q': 144 /* quiet; error messages only */ 145 qflag = 1; 146 break; 147 case 'r': 148 /* reverse order of sort */ 149 rflag = 1; 150 break; 151 case 's': 152 /* merge accounting file into summaries */ 153 sflag = 1; 154 break; 155 case 't': 156 /* report ratio of user and system times */ 157 tflag = 1; 158 break; 159 case 'u': 160 /* first, print uid and command name */ 161 uflag = 1; 162 break; 163 case 'v': 164 /* cull junk */ 165 vflag = 1; 166 cutoff = atoi(optarg); 167 break; 168 case '?': 169 default: 170 (void)fprintf(stderr, 171 "usage: sa [-abcdDfijkKlmnqrstu] [-v cutoff] [file ...]\n"); 172 exit(1); 173 } 174 175 argc -= optind; 176 argv += optind; 177 178 /* various argument checking */ 179 if (fflag && !vflag) 180 errx(1, "only one of -f requires -v"); 181 if (fflag && aflag) 182 errx(1, "only one of -a and -v may be specified"); 183 /* XXX need more argument checking */ 184 185 if (!uflag) { 186 /* initialize tables */ 187 if ((sflag || (!mflag && !qflag)) && pacct_init() != 0) 188 errx(1, "process accounting initialization failed"); 189 if ((sflag || (mflag && !qflag)) && usracct_init() != 0) 190 errx(1, "user accounting initialization failed"); 191 } 192 193 if (argc == 0) { 194 argc = dfltargc; 195 argv = dfltargv; 196 } 197 198 /* for each file specified */ 199 for (; argc > 0; argc--, argv++) { 200 int fd; 201 202 /* 203 * load the accounting data from the file. 204 * if it fails, go on to the next file. 205 */ 206 fd = acct_load(argv[0], sflag); 207 if (fd < 0) 208 continue; 209 210 if (!uflag && sflag) { 211 #ifndef DEBUG 212 sigset_t nmask, omask; 213 int unmask = 1; 214 215 /* 216 * block most signals so we aren't interrupted during 217 * the update. 218 */ 219 if (sigfillset(&nmask) == -1) { 220 warn("sigfillset"); 221 unmask = 0; 222 error = 1; 223 } 224 if (unmask && 225 (sigprocmask(SIG_BLOCK, &nmask, &omask) == -1)) { 226 warn("couldn't set signal mask "); 227 unmask = 0; 228 error = 1; 229 } 230 #endif /* DEBUG */ 231 232 /* 233 * truncate the accounting data file ASAP, to avoid 234 * losing data. don't worry about errors in updating 235 * the saved stats; better to underbill than overbill, 236 * but we want every accounting record intact. 237 */ 238 if (ftruncate(fd, 0) == -1) { 239 warn("couldn't truncate %s", argv); 240 error = 1; 241 } 242 243 /* 244 * update saved user and process accounting data. 245 * note errors for later. 246 */ 247 if (pacct_update() != 0 || usracct_update() != 0) 248 error = 1; 249 250 #ifndef DEBUG 251 /* 252 * restore signals 253 */ 254 if (unmask && 255 (sigprocmask(SIG_SETMASK, &omask, NULL) == -1)) { 256 warn("couldn't restore signal mask"); 257 error = 1; 258 } 259 #endif /* DEBUG */ 260 } 261 262 /* 263 * close the opened accounting file 264 */ 265 if (close(fd) == -1) { 266 warn("close %s", argv); 267 error = 1; 268 } 269 } 270 271 if (!uflag && !qflag) { 272 /* print any results we may have obtained. */ 273 if (!mflag) 274 pacct_print(); 275 else 276 usracct_print(); 277 } 278 279 if (!uflag) { 280 /* finally, deallocate databases */ 281 if (sflag || (!mflag && !qflag)) 282 pacct_destroy(); 283 if (sflag || (mflag && !qflag)) 284 usracct_destroy(); 285 } 286 287 exit(error); 288 } 289 290 static int 291 acct_load(pn, wr) 292 char *pn; 293 int wr; 294 { 295 struct acct ac; 296 struct cmdinfo ci; 297 ssize_t rv; 298 int fd, i; 299 300 /* 301 * open the file 302 */ 303 fd = open(pn, wr ? O_RDWR : O_RDONLY, 0); 304 if (fd == -1) { 305 warn("open %s %s", pn, wr ? "for read/write" : "read-only"); 306 return (-1); 307 } 308 309 /* 310 * read all we can; don't stat and open because more processes 311 * could exit, and we'd miss them 312 */ 313 while (1) { 314 /* get one accounting entry and punt if there's an error */ 315 rv = read(fd, &ac, sizeof(struct acct)); 316 if (rv == -1) 317 warn("error reading %s", pn); 318 else if (rv > 0 && rv < sizeof(struct acct)) 319 warnx("short read of accounting data in %s", pn); 320 if (rv != sizeof(struct acct)) 321 break; 322 323 /* decode it */ 324 ci.ci_calls = 1; 325 for (i = 0; i < sizeof(ac.ac_comm) && ac.ac_comm[i] != '\0'; 326 i++) { 327 char c = ac.ac_comm[i]; 328 329 if (!isascii(c) || iscntrl(c)) { 330 ci.ci_comm[i] = '?'; 331 ci.ci_flags |= CI_UNPRINTABLE; 332 } else 333 ci.ci_comm[i] = c; 334 } 335 if (ac.ac_flag & AFORK) 336 ci.ci_comm[i++] = '*'; 337 ci.ci_comm[i++] = '\0'; 338 ci.ci_etime = decode_comp_t(ac.ac_etime); 339 ci.ci_utime = decode_comp_t(ac.ac_utime); 340 ci.ci_stime = decode_comp_t(ac.ac_stime); 341 ci.ci_uid = ac.ac_uid; 342 ci.ci_mem = ac.ac_mem; 343 ci.ci_io = decode_comp_t(ac.ac_io) / AHZ; 344 345 if (!uflag) { 346 /* and enter it into the usracct and pacct databases */ 347 if (sflag || (!mflag && !qflag)) 348 pacct_add(&ci); 349 if (sflag || (mflag && !qflag)) 350 usracct_add(&ci); 351 } else if (!qflag) 352 printf("%6u %12.2lf cpu %12quk mem %12qu io %s\n", 353 ci.ci_uid, 354 (ci.ci_utime + ci.ci_stime) / (double) AHZ, 355 ci.ci_mem, ci.ci_io, ci.ci_comm); 356 } 357 358 /* finally, return the file descriptor for possible truncation */ 359 return (fd); 360 } 361 362 static u_quad_t 363 decode_comp_t(comp) 364 comp_t comp; 365 { 366 u_quad_t rv; 367 368 /* 369 * for more info on the comp_t format, see: 370 * /usr/src/sys/kern/kern_acct.c 371 * /usr/src/sys/sys/acct.h 372 * /usr/src/usr.bin/lastcomm/lastcomm.c 373 */ 374 rv = comp & 0x1fff; /* 13 bit fraction */ 375 comp >>= 13; /* 3 bit base-8 exponent */ 376 while (comp--) 377 rv <<= 3; 378 379 return (rv); 380 } 381 382 /* sort commands, doing the right thing in terms of reversals */ 383 static int 384 cmp_comm(s1, s2) 385 const char *s1, *s2; 386 { 387 int rv; 388 389 rv = strcmp(s1, s2); 390 if (rv == 0) 391 rv = -1; 392 return (rflag ? rv : -rv); 393 } 394 395 /* sort by total user and system time */ 396 static int 397 cmp_usrsys(d1, d2) 398 const DBT *d1, *d2; 399 { 400 struct cmdinfo c1, c2; 401 u_quad_t t1, t2; 402 403 memcpy(&c1, d1->data, sizeof(c1)); 404 memcpy(&c2, d2->data, sizeof(c2)); 405 406 t1 = c1.ci_utime + c1.ci_stime; 407 t2 = c2.ci_utime + c2.ci_stime; 408 409 if (t1 < t2) 410 return -1; 411 else if (t1 == t2) 412 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 413 else 414 return 1; 415 } 416 417 /* sort by average user and system time */ 418 static int 419 cmp_avgusrsys(d1, d2) 420 const DBT *d1, *d2; 421 { 422 struct cmdinfo c1, c2; 423 double t1, t2; 424 425 memcpy(&c1, d1->data, sizeof(c1)); 426 memcpy(&c2, d2->data, sizeof(c2)); 427 428 t1 = c1.ci_utime + c1.ci_stime; 429 t1 /= (double) (c1.ci_calls ? c1.ci_calls : 1); 430 431 t2 = c2.ci_utime + c2.ci_stime; 432 t2 /= (double) (c2.ci_calls ? c2.ci_calls : 1); 433 434 if (t1 < t2) 435 return -1; 436 else if (t1 == t2) 437 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 438 else 439 return 1; 440 } 441 442 /* sort by total number of disk I/O operations */ 443 static int 444 cmp_dkio(d1, d2) 445 const DBT *d1, *d2; 446 { 447 struct cmdinfo c1, c2; 448 449 memcpy(&c1, d1->data, sizeof(c1)); 450 memcpy(&c2, d2->data, sizeof(c2)); 451 452 if (c1.ci_io < c2.ci_io) 453 return -1; 454 else if (c1.ci_io == c2.ci_io) 455 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 456 else 457 return 1; 458 } 459 460 /* sort by average number of disk I/O operations */ 461 static int 462 cmp_avgdkio(d1, d2) 463 const DBT *d1, *d2; 464 { 465 struct cmdinfo c1, c2; 466 double n1, n2; 467 468 memcpy(&c1, d1->data, sizeof(c1)); 469 memcpy(&c2, d2->data, sizeof(c2)); 470 471 n1 = (double) c1.ci_io / (double) (c1.ci_calls ? c1.ci_calls : 1); 472 n2 = (double) c2.ci_io / (double) (c2.ci_calls ? c2.ci_calls : 1); 473 474 if (n1 < n2) 475 return -1; 476 else if (n1 == n2) 477 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 478 else 479 return 1; 480 } 481 482 /* sort by the cpu-storage integral */ 483 static int 484 cmp_cpumem(d1, d2) 485 const DBT *d1, *d2; 486 { 487 struct cmdinfo c1, c2; 488 489 memcpy(&c1, d1->data, sizeof(c1)); 490 memcpy(&c2, d2->data, sizeof(c2)); 491 492 if (c1.ci_mem < c2.ci_mem) 493 return -1; 494 else if (c1.ci_mem == c2.ci_mem) 495 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 496 else 497 return 1; 498 } 499 500 /* sort by the cpu-time average memory usage */ 501 static int 502 cmp_avgcpumem(d1, d2) 503 const DBT *d1, *d2; 504 { 505 struct cmdinfo c1, c2; 506 u_quad_t t1, t2; 507 double n1, n2; 508 509 memcpy(&c1, d1->data, sizeof(c1)); 510 memcpy(&c2, d2->data, sizeof(c2)); 511 512 t1 = c1.ci_utime + c1.ci_stime; 513 t2 = c2.ci_utime + c2.ci_stime; 514 515 n1 = (double) c1.ci_mem / (double) (t1 ? t1 : 1); 516 n2 = (double) c2.ci_mem / (double) (t2 ? t2 : 1); 517 518 if (n1 < n2) 519 return -1; 520 else if (n1 == n2) 521 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 522 else 523 return 1; 524 } 525 526 /* sort by the number of invocations */ 527 static int 528 cmp_calls(d1, d2) 529 const DBT *d1, *d2; 530 { 531 struct cmdinfo c1, c2; 532 533 memcpy(&c1, d1->data, sizeof(c1)); 534 memcpy(&c2, d2->data, sizeof(c2)); 535 536 if (c1.ci_calls < c2.ci_calls) 537 return -1; 538 else if (c1.ci_calls == c2.ci_calls) 539 return (cmp_comm(c1.ci_comm, c2.ci_comm)); 540 else 541 return 1; 542 } 543
Indexes created Tue Sep 23 07:09:52 GMT 2025