usr.sbin/sa/main.c

   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 #if 0
  32 #ifndef lint
  33 static const char copyright[] =
  34 "@(#) Copyright (c) 1994 Christopher G. Demetriou\n\
  35  All rights reserved.\n";
  36 #endif
  37 #endif
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 /*
  42  * sa:  system accounting
  43  */
  44
  45 #include <sys/types.h>
  46 #include <sys/acct.h>
  47 #include <ctype.h>
  48 #include <err.h>
  49 #include <errno.h>
  50 #include <fcntl.h>
  51 #include <signal.h>
  52 #include <stdint.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include <unistd.h>
  57 #include "extern.h"
  58 #include "pathnames.h"
  59
  60 static FILE     *acct_load(const char *, int);
  61 static int       cmp_comm(const char *, const char *);
  62 static int       cmp_usrsys(const DBT *, const DBT *);
  63 static int       cmp_avgusrsys(const DBT *, const DBT *);
  64 static int       cmp_dkio(const DBT *, const DBT *);
  65 static int       cmp_avgdkio(const DBT *, const DBT *);
  66 static int       cmp_cpumem(const DBT *, const DBT *);
  67 static int       cmp_avgcpumem(const DBT *, const DBT *);
  68 static int       cmp_calls(const DBT *, const DBT *);
  69 static void      usage(void);
  70
  71 int aflag, bflag, cflag, dflag, Dflag, fflag, iflag, jflag, kflag;
  72 int Kflag, lflag, mflag, qflag, rflag, sflag, tflag, uflag, vflag;
  73 u_quad_t cutoff = 1;
  74 const char *pdb_file = _PATH_SAVACCT;
  75 const char *usrdb_file = _PATH_USRACCT;
  76
  77 static char     *dfltargv[] = { NULL };
  78 static int      dfltargc = (sizeof dfltargv/sizeof(char *));
  79
  80 /* default to comparing by sum of user + system time */
  81 cmpf_t   sa_cmp = cmp_usrsys;
  82
  83 int
  84 main(int argc, char **argv)
  85 {
  86         FILE *f;
  87         char pathacct[] = _PATH_ACCT;
  88         int ch, error = 0;
  89
  90         dfltargv[0] = pathacct;
  91
  92         while ((ch = getopt(argc, argv, "abcdDfijkKlmnP:qrstuU:v:")) != -1)
  93                 switch (ch) {
  94                         case 'a':
  95                                 /* print all commands */
  96                                 aflag = 1;
  97                                 break;
  98                         case 'b':
  99                                 /* sort by per-call user/system time average */
 100                                 bflag = 1;
 101                                 sa_cmp = cmp_avgusrsys;
 102                                 break;
 103                         case 'c':
 104                                 /* print percentage total time */
 105                                 cflag = 1;
 106                                 break;
 107                         case 'd':
 108                                 /* sort by averge number of disk I/O ops */
 109                                 dflag = 1;
 110                                 sa_cmp = cmp_avgdkio;
 111                                 break;
 112                         case 'D':
 113                                 /* print and sort by total disk I/O ops */
 114                                 Dflag = 1;
 115                                 sa_cmp = cmp_dkio;
 116                                 break;
 117                         case 'f':
 118                                 /* force no interactive threshold comprison */
 119                                 fflag = 1;
 120                                 break;
 121                         case 'i':
 122                                 /* do not read in summary file */
 123                                 iflag = 1;
 124                                 break;
 125                         case 'j':
 126                                 /* instead of total minutes, give sec/call */
 127                                 jflag = 1;
 128                                 break;
 129                         case 'k':
 130                                 /* sort by cpu-time average memory usage */
 131                                 kflag = 1;
 132                                 sa_cmp = cmp_avgcpumem;
 133                                 break;
 134                         case 'K':
 135                                 /* print and sort by cpu-storage integral */
 136                                 sa_cmp = cmp_cpumem;
 137                                 Kflag = 1;
 138                                 break;
 139                         case 'l':
 140                                 /* separate system and user time */
 141                                 lflag = 1;
 142                                 break;
 143                         case 'm':
 144                                 /* print procs and time per-user */
 145                                 mflag = 1;
 146                                 break;
 147                         case 'n':
 148                                 /* sort by number of calls */
 149                                 sa_cmp = cmp_calls;
 150                                 break;
 151                         case 'P':
 152                                 /* specify program database summary file */
 153                                 pdb_file = optarg;
 154                                 break;
 155                         case 'q':
 156                                 /* quiet; error messages only */
 157                                 qflag = 1;
 158                                 break;
 159                         case 'r':
 160                                 /* reverse order of sort */
 161                                 rflag = 1;
 162                                 break;
 163                         case 's':
 164                                 /* merge accounting file into summaries */
 165                                 sflag = 1;
 166                                 break;
 167                         case 't':
 168                                 /* report ratio of user and system times */
 169                                 tflag = 1;
 170                                 break;
 171                         case 'u':
 172                                 /* first, print uid and command name */
 173                                 uflag = 1;
 174                                 break;
 175                         case 'U':
 176                                 /* specify user database summary file */
 177                                 usrdb_file = optarg;
 178                                 break;
 179                         case 'v':
 180                                 /* cull junk */
 181                                 vflag = 1;
 182                                 cutoff = atoi(optarg);
 183                                 break;
 184                         case '?':
 185                         default:
 186                                 usage();
 187                 }
 188
 189         argc -= optind;
 190         argv += optind;
 191
 192         /* various argument checking */
 193         if (fflag && !vflag)
 194                 errx(1, "only one of -f requires -v");
 195         if (fflag && aflag)
 196                 errx(1, "only one of -a and -v may be specified");
 197         /* XXX need more argument checking */
 198
 199         if (!uflag) {
 200                 /* initialize tables */
 201                 if ((sflag || (!mflag && !qflag)) && pacct_init() != 0)
 202                         errx(1, "process accounting initialization failed");
 203                 if ((sflag || (mflag && !qflag)) && usracct_init() != 0)
 204                         errx(1, "user accounting initialization failed");
 205         }
 206
 207         if (argc == 0) {
 208                 argc = dfltargc;
 209                 argv = dfltargv;
 210         }
 211
 212         /* for each file specified */
 213         for (; argc > 0; argc--, argv++) {
 214                 /*
 215                  * load the accounting data from the file.
 216                  * if it fails, go on to the next file.
 217                  */
 218                 f = acct_load(argv[0], sflag);
 219                 if (f == NULL)
 220                         continue;
 221
 222                 if (!uflag && sflag) {
 223 #ifndef DEBUG
 224                         sigset_t nmask, omask;
 225                         int unmask = 1;
 226
 227                         /*
 228                          * block most signals so we aren't interrupted during
 229                          * the update.
 230                          */
 231                         if (sigfillset(&nmask) == -1) {
 232                                 warn("sigfillset");
 233                                 unmask = 0;
 234                                 error = 1;
 235                         }
 236                         if (unmask &&
 237                             (sigprocmask(SIG_BLOCK, &nmask, &omask) == -1)) {
 238                                 warn("couldn't set signal mask");
 239                                 unmask = 0;
 240                                 error = 1;
 241                         }
 242 #endif /* DEBUG */
 243
 244                         /*
 245                          * truncate the accounting data file ASAP, to avoid
 246                          * losing data.  don't worry about errors in updating
 247                          * the saved stats; better to underbill than overbill,
 248                          * but we want every accounting record intact.
 249                          */
 250                         if (ftruncate(fileno(f), 0) == -1) {
 251                                 warn("couldn't truncate %s", *argv);
 252                                 error = 1;
 253                         }
 254
 255                         /*
 256                          * update saved user and process accounting data.
 257                          * note errors for later.
 258                          */
 259                         if (pacct_update() != 0 || usracct_update() != 0)
 260                                 error = 1;
 261
 262 #ifndef DEBUG
 263                         /*
 264                          * restore signals
 265                          */
 266                         if (unmask &&
 267                             (sigprocmask(SIG_SETMASK, &omask, NULL) == -1)) {
 268                                 warn("couldn't restore signal mask");
 269                                 error = 1;
 270                         }
 271 #endif /* DEBUG */
 272                 }
 273
 274                 /*
 275                  * close the opened accounting file
 276                  */
 277                 if (fclose(f) == EOF) {
 278                         warn("fclose %s", *argv);
 279                         error = 1;
 280                 }
 281         }
 282
 283         if (!uflag && !qflag) {
 284                 /* print any results we may have obtained. */
 285                 if (!mflag)
 286                         pacct_print();
 287                 else
 288                         usracct_print();
 289         }
 290
 291         if (!uflag) {
 292                 /* finally, deallocate databases */
 293                 if (sflag || (!mflag && !qflag))
 294                         pacct_destroy();
 295                 if (sflag || (mflag && !qflag))
 296                         usracct_destroy();
 297         }
 298
 299         exit(error);
 300 }
 301
 302 static void
 303 usage(void)
 304 {
 305         (void)fprintf(stderr,
 306                 "usage: sa [-abcdDfijkKlmnqrstu] [-P file] [-U file] [-v cutoff] [file ...]\n");
 307         exit(1);
 308 }
 309
 310 static FILE *
 311 acct_load(const char *pn, int wr)
 312 {
 313         struct acctv2 ac;
 314         struct cmdinfo ci;
 315         ssize_t rv;
 316         FILE *f;
 317         int i;
 318
 319         /*
 320          * open the file
 321          */
 322         f = fopen(pn, wr ? "r+" : "r");
 323         if (f == NULL) {
 324                 warn("open %s %s", pn, wr ? "for read/write" : "read-only");
 325                 return (NULL);
 326         }
 327
 328         /*
 329          * read all we can; don't stat and open because more processes
 330          * could exit, and we'd miss them
 331          */
 332         while (1) {
 333                 /* get one accounting entry and punt if there's an error */
 334                 rv = readrec_forward(f, &ac);
 335                 if (rv != 1) {
 336                         if (rv == EOF)
 337                                 warn("error reading %s", pn);
 338                         break;
 339                 }
 340
 341                 /* decode it */
 342                 ci.ci_calls = 1;
 343                 for (i = 0; i < (int)sizeof ac.ac_comm && ac.ac_comm[i] != '\0';
 344                     i++) {
 345                         char c = ac.ac_comm[i];
 346
 347                         if (!isascii(c) || iscntrl(c)) {
 348                                 ci.ci_comm[i] = '?';
 349                                 ci.ci_flags |= CI_UNPRINTABLE;
 350                         } else
 351                                 ci.ci_comm[i] = c;
 352                 }
 353                 if (ac.ac_flagx & AFORK)
 354                         ci.ci_comm[i++] = '*';
 355                 ci.ci_comm[i++] = '\0';
 356                 ci.ci_etime = ac.ac_etime;
 357                 ci.ci_utime = ac.ac_utime;
 358                 ci.ci_stime = ac.ac_stime;
 359                 ci.ci_uid = ac.ac_uid;
 360                 ci.ci_mem = ac.ac_mem;
 361                 ci.ci_io = ac.ac_io;
 362
 363                 if (!uflag) {
 364                         /* and enter it into the usracct and pacct databases */
 365                         if (sflag || (!mflag && !qflag))
 366                                 pacct_add(&ci);
 367                         if (sflag || (mflag && !qflag))
 368                                 usracct_add(&ci);
 369                 } else if (!qflag)
 370                         printf("%6u %12.3lf cpu %12.0lfk mem %12.0lf io %s\n",
 371                             ci.ci_uid,
 372                             (ci.ci_utime + ci.ci_stime) / 1000000,
 373                             ci.ci_mem, ci.ci_io,
 374                             ci.ci_comm);
 375         }
 376
 377         /* Finally, return the file stream for possible truncation. */
 378         return (f);
 379 }
 380
 381 /* sort commands, doing the right thing in terms of reversals */
 382 static int
 383 cmp_comm(const char *s1, const char *s2)
 384 {
 385         int rv;
 386
 387         rv = strcmp(s1, s2);
 388         if (rv == 0)
 389                 rv = -1;
 390         return (rflag ? rv : -rv);
 391 }
 392
 393 /* sort by total user and system time */
 394 static int
 395 cmp_usrsys(const DBT *d1, const DBT *d2)
 396 {
 397         struct cmdinfo c1, c2;
 398         double t1, t2;
 399
 400         memcpy(&c1, d1->data, sizeof(c1));
 401         memcpy(&c2, d2->data, sizeof(c2));
 402
 403         t1 = c1.ci_utime + c1.ci_stime;
 404         t2 = c2.ci_utime + c2.ci_stime;
 405
 406         if (t1 < t2)
 407                 return -1;
 408         else if (t1 == t2)
 409                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 410         else
 411                 return 1;
 412 }
 413
 414 /* sort by average user and system time */
 415 static int
 416 cmp_avgusrsys(const DBT *d1, const DBT *d2)
 417 {
 418         struct cmdinfo c1, c2;
 419         double t1, t2;
 420
 421         memcpy(&c1, d1->data, sizeof(c1));
 422         memcpy(&c2, d2->data, sizeof(c2));
 423
 424         t1 = c1.ci_utime + c1.ci_stime;
 425         t1 /= (double) (c1.ci_calls ? c1.ci_calls : 1);
 426
 427         t2 = c2.ci_utime + c2.ci_stime;
 428         t2 /= (double) (c2.ci_calls ? c2.ci_calls : 1);
 429
 430         if (t1 < t2)
 431                 return -1;
 432         else if (t1 == t2)
 433                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 434         else
 435                 return 1;
 436 }
 437
 438 /* sort by total number of disk I/O operations */
 439 static int
 440 cmp_dkio(const DBT *d1, const DBT *d2)
 441 {
 442         struct cmdinfo c1, c2;
 443
 444         memcpy(&c1, d1->data, sizeof(c1));
 445         memcpy(&c2, d2->data, sizeof(c2));
 446
 447         if (c1.ci_io < c2.ci_io)
 448                 return -1;
 449         else if (c1.ci_io == c2.ci_io)
 450                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 451         else
 452                 return 1;
 453 }
 454
 455 /* sort by average number of disk I/O operations */
 456 static int
 457 cmp_avgdkio(const DBT *d1, const DBT *d2)
 458 {
 459         struct cmdinfo c1, c2;
 460         double n1, n2;
 461
 462         memcpy(&c1, d1->data, sizeof(c1));
 463         memcpy(&c2, d2->data, sizeof(c2));
 464
 465         n1 = c1.ci_io / (double) (c1.ci_calls ? c1.ci_calls : 1);
 466         n2 = c2.ci_io / (double) (c2.ci_calls ? c2.ci_calls : 1);
 467
 468         if (n1 < n2)
 469                 return -1;
 470         else if (n1 == n2)
 471                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 472         else
 473                 return 1;
 474 }
 475
 476 /* sort by the cpu-storage integral */
 477 static int
 478 cmp_cpumem(const DBT *d1, const DBT *d2)
 479 {
 480         struct cmdinfo c1, c2;
 481
 482         memcpy(&c1, d1->data, sizeof(c1));
 483         memcpy(&c2, d2->data, sizeof(c2));
 484
 485         if (c1.ci_mem < c2.ci_mem)
 486                 return -1;
 487         else if (c1.ci_mem == c2.ci_mem)
 488                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 489         else
 490                 return 1;
 491 }
 492
 493 /* sort by the cpu-time average memory usage */
 494 static int
 495 cmp_avgcpumem(const DBT *d1, const DBT *d2)
 496 {
 497         struct cmdinfo c1, c2;
 498         double t1, t2;
 499         double n1, n2;
 500
 501         memcpy(&c1, d1->data, sizeof(c1));
 502         memcpy(&c2, d2->data, sizeof(c2));
 503
 504         t1 = c1.ci_utime + c1.ci_stime;
 505         t2 = c2.ci_utime + c2.ci_stime;
 506
 507         n1 = c1.ci_mem / (t1 ? t1 : 1);
 508         n2 = c2.ci_mem / (t2 ? t2 : 1);
 509
 510         if (n1 < n2)
 511                 return -1;
 512         else if (n1 == n2)
 513                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 514         else
 515                 return 1;
 516 }
 517
 518 /* sort by the number of invocations */
 519 static int
 520 cmp_calls(const DBT *d1, const DBT *d2)
 521 {
 522         struct cmdinfo c1, c2;
 523
 524         memcpy(&c1, d1->data, sizeof(c1));
 525         memcpy(&c2, d2->data, sizeof(c2));
 526
 527         if (c1.ci_calls < c2.ci_calls)
 528                 return -1;
 529         else if (c1.ci_calls == c2.ci_calls)
 530                 return (cmp_comm(c1.ci_comm, c2.ci_comm));
 531         else
 532                 return 1;
 533 }