lustre/tests/fsx.c

   1 /*
   2  * Copyright (c) 1998-2001 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  *
  22  *      File:   fsx.c
  23  *      Author: Avadis Tevanian, Jr.
  24  *
  25  *      File system exerciser.
  26  *
  27  *      Rewrite and enhancements 1998-2001 Conrad Minshall -- conrad@mac.com
  28  *
  29  *      Various features from Joe Sokol, Pat Dirks, and Clark Warner.
  30  *
  31  *      Small changes to work under Linux -- davej@suse.de
  32  *
  33  *      Sundry porting patches from Guy Harris 12/2001
  34  * $FreeBSD: src/tools/regression/fsx/fsx.c,v 1.1 2001/12/20 04:15:57 jkh Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #if defined(_UWIN) || defined(__linux__)
  40 # include <sys/param.h>
  41 # include <limits.h>
  42 # include <time.h>
  43 # include <strings.h>
  44 # include <sys/time.h>
  45 #endif
  46 #include <fcntl.h>
  47 #include <sys/mman.h>
  48 #ifndef MAP_FILE
  49 # define MAP_FILE 0
  50 #endif
  51 #include <limits.h>
  52 #include <signal.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include <unistd.h>
  57 #include <stdarg.h>
  58 #include <errno.h>
  59
  60 #define NUMPRINTCOLUMNS 32      /* # columns of data to print on each line */
  61
  62 /*
  63  *      A log entry is an operation and a bunch of arguments.
  64  */
  65
  66 struct log_entry {
  67         int     operation;
  68         struct timeval tv;
  69         int     args[3];
  70 };
  71
  72 #define LOGSIZE 100000
  73
  74 struct log_entry        oplog[LOGSIZE]; /* the log */
  75 int                     logptr = 0;     /* current position in log */
  76 int                     logcount = 0;   /* total ops */
  77
  78 /*
  79  *      Define operations
  80  */
  81
  82 #define OP_READ         1
  83 #define OP_WRITE        2
  84 #define OP_TRUNCATE     3
  85 #define OP_CLOSEOPEN    4
  86 #define OP_MAPREAD      5
  87 #define OP_MAPWRITE     6
  88 #define OP_SKIPPED      7
  89
  90 int page_size;
  91 int page_mask;
  92
  93 char    *original_buf;                  /* a pointer to the original data */
  94 char    *good_buf;                      /* a pointer to the correct data */
  95 char    *temp_buf;                      /* a pointer to the current data */
  96 char    *fname;                         /* name of our test file */
  97 char    logfile[1024];                  /* name of our log file */
  98 char    goodfile[1024];                 /* name of our test file */
  99
 100 off_t           file_size = 0;
 101 off_t           biggest = 0;
 102 char            state[256];
 103 unsigned long   testcalls = 0;          /* calls to function "test" */
 104
 105 unsigned long   simulatedopcount = 0;   /* -b flag */
 106 int     closeprob = 0;                  /* -c flag */
 107 int     debug = 0;                      /* -d flag */
 108 unsigned long   debugstart = 0;         /* -D flag */
 109 unsigned long   maxfilelen = 256 * 1024;        /* -l flag */
 110 int     sizechecks = 1;                 /* -n flag disables them */
 111 int     maxoplen = 64 * 1024;           /* -o flag */
 112 int     quiet = 0;                      /* -q flag */
 113 unsigned long progressinterval = 0;     /* -p flag */
 114 int     readbdy = 1;                    /* -r flag */
 115 int     style = 0;                      /* -s flag */
 116 int     truncbdy = 1;                   /* -t flag */
 117 int     writebdy = 1;                   /* -w flag */
 118 long    monitorstart = -1;              /* -m flag */
 119 long    monitorend = -1;                /* -m flag */
 120 int     lite = 0;                       /* -L flag */
 121 long    numops = -1;                    /* -N flag */
 122 int     randomoplen = 1;                /* -O flag disables it */
 123 int     seed = 1;                       /* -S flag */
 124 int     mapped_writes = 1;              /* -W flag disables */
 125 int     mapped_reads = 1;               /* -R flag disables it */
 126 int     fsxgoodfd = 0;
 127 FILE *  fsxlogf = NULL;
 128 int badoff = -1;
 129
 130
 131 void
 132 vwarnc(code, fmt, ap)
 133         int code;
 134         const char *fmt;
 135         va_list ap;
 136 {
 137         fprintf(stderr, "fsx: ");
 138         if (fmt != NULL) {
 139                 vfprintf(stderr, fmt, ap);
 140                 fprintf(stderr, ": ");
 141         }
 142         fprintf(stderr, "%s\n", strerror(code));
 143 }
 144
 145
 146 void
 147 warn(const char * fmt, ...)
 148 {
 149         va_list ap;
 150         va_start(ap, fmt);
 151         vwarnc(errno, fmt, ap);
 152         va_end(ap);
 153 }
 154
 155
 156 void
 157 __attribute__((format(printf, 1, 2)))
 158 prt(char *fmt, ...)
 159 {
 160         va_list args;
 161
 162         va_start(args, fmt);
 163         vfprintf(stdout, fmt, args);
 164         va_end(args);
 165
 166         if (fsxlogf) {
 167                 va_start(args, fmt);
 168                 vfprintf(fsxlogf, fmt, args);
 169                 va_end(args);
 170         }
 171 }
 172
 173 void
 174 prterr(char *prefix)
 175 {
 176         prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
 177 }
 178
 179
 180 void
 181 log4(int operation, int arg0, int arg1, int arg2, struct timeval *tv)
 182 {
 183         struct log_entry *le;
 184
 185         le = &oplog[logptr];
 186         le->tv = *tv;
 187         le->operation = operation;
 188         le->args[0] = arg0;
 189         le->args[1] = arg1;
 190         le->args[2] = arg2;
 191         logptr++;
 192         logcount++;
 193         if (logptr >= LOGSIZE)
 194                 logptr = 0;
 195 }
 196
 197
 198 void
 199 logdump(void)
 200 {
 201         int     i, count, down;
 202         struct log_entry        *lp;
 203
 204         prt("LOG DUMP (%d total operations):\n", logcount);
 205         if (logcount < LOGSIZE) {
 206                 i = 0;
 207                 count = logcount;
 208         } else {
 209                 i = logptr;
 210                 count = LOGSIZE;
 211         }
 212         for ( ; count > 0; count--) {
 213                 int opnum;
 214
 215                 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
 216                 lp = &oplog[i];
 217                 prt("%d: %lu.%06lu ", opnum,
 218                     lp->tv.tv_sec, lp->tv.tv_usec);
 219
 220                 switch (lp->operation) {
 221                 case OP_MAPREAD:
 222                         prt("MAPREAD  0x%x thru 0x%x (0x%x bytes)",
 223                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 224                             lp->args[1]);
 225                         if (badoff >= lp->args[0] && badoff <
 226                                                      lp->args[0] + lp->args[1])
 227                                 prt("\t***RRRR***");
 228                         break;
 229                 case OP_MAPWRITE:
 230                         prt("MAPWRITE 0x%x thru 0x%x (0x%x bytes)",
 231                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 232                             lp->args[1]);
 233                         if (badoff >= lp->args[0] && badoff <
 234                                                      lp->args[0] + lp->args[1])
 235                                 prt("\t******WWWW");
 236                         break;
 237                 case OP_READ:
 238                         prt("READ     0x%x thru 0x%x (0x%x bytes)",
 239                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 240                             lp->args[1]);
 241                         if (badoff >= lp->args[0] &&
 242                             badoff < lp->args[0] + lp->args[1])
 243                                 prt("\t***RRRR***");
 244                         break;
 245                 case OP_WRITE:
 246                         prt("WRITE    0x%x thru 0x%x (0x%x bytes)",
 247                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 248                             lp->args[1]);
 249                         if (lp->args[0] > lp->args[2])
 250                                 prt(" HOLE");
 251                         else if (lp->args[0] + lp->args[1] > lp->args[2])
 252                                 prt(" EXTEND");
 253                         if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
 254                             badoff < lp->args[0] + lp->args[1])
 255                                 prt("\t***WWWW");
 256                         break;
 257                 case OP_TRUNCATE:
 258                         down = lp->args[0] < lp->args[1];
 259                         prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
 260                             down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
 261                         if (badoff >= lp->args[!down] &&
 262                             badoff < lp->args[!!down])
 263                                 prt("\t******WWWW");
 264                         break;
 265                 case OP_CLOSEOPEN:
 266                         prt("CLOSE/OPEN");
 267                         break;
 268                 case OP_SKIPPED:
 269                         prt("SKIPPED (no operation)");
 270                         break;
 271                 default:
 272                         prt("BOGUS LOG ENTRY (operation code = %d)!",
 273                             lp->operation);
 274                 }
 275                 prt("\n");
 276                 i++;
 277                 if (i == LOGSIZE)
 278                         i = 0;
 279         }
 280 }
 281
 282
 283 void
 284 save_buffer(char *buffer, off_t bufferlength, int fd)
 285 {
 286         off_t ret;
 287         ssize_t byteswritten;
 288
 289         if (fd <= 0 || bufferlength == 0)
 290                 return;
 291
 292         if (bufferlength > SSIZE_MAX) {
 293                 prt("fsx flaw: overflow in save_buffer\n");
 294                 exit(67);
 295         }
 296         if (lite) {
 297                 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 298                 if (size_by_seek == (off_t)-1)
 299                         prterr("save_buffer: lseek eof");
 300                 else if (bufferlength > size_by_seek) {
 301                         warn("save_buffer: .fsxgood file too short... will"
 302                                 "save 0x%llx bytes instead of 0x%llx\n",
 303                                 (unsigned long long)size_by_seek,
 304                                 (unsigned long long)bufferlength);
 305                         bufferlength = size_by_seek;
 306                 }
 307         }
 308
 309         ret = lseek(fd, (off_t)0, SEEK_SET);
 310         if (ret == (off_t)-1)
 311                 prterr("save_buffer: lseek 0");
 312
 313         byteswritten = write(fd, buffer, (size_t)bufferlength);
 314         if (byteswritten != bufferlength) {
 315                 if (byteswritten == -1)
 316                         prterr("save_buffer write");
 317                 else
 318                         warn("save_buffer: short write, 0x%x bytes instead"
 319                                 "of 0x%llx\n",
 320                              (unsigned)byteswritten,
 321                              (unsigned long long)bufferlength);
 322         }
 323 }
 324
 325
 326 void
 327 report_failure(int status)
 328 {
 329         logdump();
 330
 331         if (fsxgoodfd) {
 332                 if (good_buf) {
 333                         save_buffer(good_buf, file_size, fsxgoodfd);
 334                         prt("Correct content saved for comparison\n");
 335                         prt("(maybe hexdump \"%s\" vs \"%s\")\n",
 336                             fname, goodfile);
 337                 }
 338                 close(fsxgoodfd);
 339         }
 340         exit(status);
 341 }
 342
 343
 344 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
 345                                         *(((unsigned char *)(cp)) + 1)))
 346
 347 void
 348 check_buffers(unsigned offset, unsigned size)
 349 {
 350         unsigned char c, t;
 351         unsigned i = 0;
 352         unsigned n = 0;
 353         unsigned op = 0;
 354         unsigned bad = 0;
 355
 356         if (memcmp(good_buf + offset, temp_buf, size) != 0) {
 357                 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
 358                     offset, size);
 359                 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
 360                 while (size > 0) {
 361                         c = good_buf[offset];
 362                         t = temp_buf[i];
 363                         if (c != t) {
 364                                 if (n == 0) {
 365                                         bad = short_at(&temp_buf[i]);
 366                                         prt("%#07x\t%#06x\t%#06x", offset,
 367                                             short_at(&good_buf[offset]), bad);
 368                                         op = temp_buf[offset & 1 ? i+1 : i];
 369                                 }
 370                                 n++;
 371                                 badoff = offset;
 372                         }
 373                         offset++;
 374                         i++;
 375                         size--;
 376                 }
 377                 if (n) {
 378                         prt("\t%#7x\n", n);
 379                         if (bad)
 380                                 prt("operation# (mod 256) for the bad data"
 381                                         "may be %u\n", ((unsigned)op & 0xff));
 382                         else
 383                                 prt("operation# (mod 256) for the bad data"
 384                                         "unknown, check HOLE and EXTEND ops\n");
 385                 } else
 386                         prt("????????????????\n");
 387                 report_failure(110);
 388         }
 389 }
 390
 391 struct test_file {
 392         char *path;
 393         int fd;
 394 } *test_files = NULL;
 395
 396 int num_test_files = 0;
 397 enum fd_iteration_policy {
 398         FD_SINGLE,
 399         FD_ROTATE,
 400         FD_RANDOM,
 401 };
 402 int fd_policy = FD_RANDOM;
 403 int fd_last = 0;
 404
 405 struct test_file *
 406 get_tf(void)
 407 {
 408         unsigned index = 0;
 409
 410         switch (fd_policy) {
 411                 case FD_ROTATE:
 412                         index = fd_last++;
 413                         break;
 414                 case FD_RANDOM:
 415                         index = random();
 416                         break;
 417                 case FD_SINGLE:
 418                         index = 0;
 419                         break;
 420                 default:
 421                         prt("unknown policy");
 422                         exit(1);
 423                         break;
 424         }
 425         return &test_files[ index % num_test_files ];
 426 }
 427
 428 void
 429 assign_fd_policy(char *policy)
 430 {
 431         if (!strcmp(policy, "random"))
 432                 fd_policy = FD_RANDOM;
 433         else if (!strcmp(policy, "rotate"))
 434                 fd_policy = FD_ROTATE;
 435         else {
 436                 prt("unknown -I policy: '%s'\n", policy);
 437                 exit(1);
 438         }
 439 }
 440
 441 int
 442 get_fd(void)
 443 {
 444         struct test_file *tf = get_tf();
 445         return tf->fd;
 446 }
 447
 448 static const char *my_basename(const char *path)
 449 {
 450         char *c = strrchr(path, '/');
 451
 452         return c ? c++ : path;
 453 }
 454
 455 void
 456 open_test_files(char **argv, int argc)
 457 {
 458         struct test_file *tf;
 459         int i;
 460
 461         num_test_files = argc;
 462         if (num_test_files == 1)
 463                 fd_policy = FD_SINGLE;
 464
 465         test_files = calloc(num_test_files, sizeof(*test_files));
 466         if (test_files == NULL) {
 467                 prterr("reallocating space for test files");
 468                 exit(1);
 469         }
 470
 471         for (i = 0, tf = test_files; i < num_test_files; i++, tf++) {
 472
 473                 tf->path = argv[i];
 474                 tf->fd = open(tf->path, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC),
 475                                 0666);
 476                 if (tf->fd < 0) {
 477                         prterr(tf->path);
 478                         exit(91);
 479                 }
 480         }
 481
 482         if (quiet || fd_policy == FD_SINGLE)
 483                 return;
 484
 485         for (i = 0, tf = test_files; i < num_test_files; i++, tf++)
 486                 prt("fd %d: %s\n", i, tf->path);
 487 }
 488
 489 void
 490 close_test_files(void)
 491 {
 492         int i;
 493         struct test_file *tf;
 494
 495         for (i = 0, tf = test_files; i < num_test_files; i++, tf++) {
 496                 if (close(tf->fd)) {
 497                         prterr("close");
 498                         report_failure(99);
 499                 }
 500         }
 501 }
 502
 503
 504 void
 505 check_size(void)
 506 {
 507         struct stat     statbuf;
 508         off_t   size_by_seek;
 509         int fd = get_fd();
 510
 511         if (fstat(fd, &statbuf)) {
 512                 prterr("check_size: fstat");
 513                 statbuf.st_size = -1;
 514         }
 515         size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 516         if (file_size != statbuf.st_size || file_size != size_by_seek) {
 517                 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
 518                     (unsigned long long)file_size,
 519                     (unsigned long long)statbuf.st_size,
 520                     (unsigned long long)size_by_seek);
 521                 report_failure(120);
 522         }
 523 }
 524
 525
 526 void
 527 check_trunc_hack(void)
 528 {
 529         struct stat statbuf;
 530         int fd = get_fd();
 531
 532         /* should not ignore ftruncate(2)'s return value */
 533         if (ftruncate(fd, (off_t)0) < 0) {
 534                 prterr("trunc_hack: ftruncate(0)");
 535                 exit(1);
 536         }
 537         if (ftruncate(fd, (off_t)100000) < 0) {
 538                 prterr("trunc_hack: ftruncate(100000)");
 539                 exit(1);
 540         }
 541         if (fstat(fd, &statbuf)) {
 542                 prterr("trunc_hack: fstat");
 543                 statbuf.st_size = -1;
 544         }
 545         if (statbuf.st_size != (off_t)100000) {
 546                 prt("no extend on truncate! not posix!\n");
 547                 exit(130);
 548         }
 549         if (ftruncate(fd, 0) < 0) {
 550                 prterr("trunc_hack: ftruncate(0) (2nd call)");
 551                 exit(1);
 552         }
 553 }
 554
 555 static char *tf_buf = NULL;
 556 static int max_tf_len = 0;
 557
 558 void
 559 alloc_tf_buf(void)
 560 {
 561         char dummy = '\0';
 562         int highest = num_test_files - 1;
 563         int len;
 564
 565         len = snprintf(&dummy, 0, "%u ", highest);
 566         if (len < 1) {
 567                 prterr("finding max tf_buf");
 568                 exit(1);
 569         }
 570         len++;
 571         tf_buf = malloc(len);
 572         if (tf_buf == NULL) {
 573                 prterr("allocating tf_buf");
 574                 exit(1);
 575         }
 576         max_tf_len = snprintf(tf_buf, len, "%u ", highest);
 577         if (max_tf_len < 1) {
 578                 prterr("fiding max_tv_len\n");
 579                 exit(1);
 580         }
 581         if (max_tf_len != len - 1) {
 582                 warn("snprintf() gave %d instead of %d?\n",
 583                                 max_tf_len, len - 1);
 584                 exit(1);
 585         }
 586 }
 587
 588 char *
 589 fill_tf_buf(struct test_file *tf)
 590 {
 591         if (tf_buf == NULL)
 592                 alloc_tf_buf();
 593
 594         sprintf(tf_buf,"%lu ", (unsigned long)(tf - test_files));
 595         return tf_buf;
 596 }
 597
 598 void
 599 output_line(struct test_file *tf, int op, unsigned offset,
 600                 unsigned size, struct timeval *tv)
 601 {
 602         char *tf_num = "";
 603
 604         char *ops[] = {
 605                 [OP_READ] = "read",
 606                 [OP_WRITE] = "write",
 607                 [OP_TRUNCATE] = "trunc from",
 608                 [OP_MAPREAD] = "mapread",
 609                 [OP_MAPWRITE] = "mapwrite",
 610         };
 611
 612         if (fd_policy != FD_SINGLE)
 613                 tf_num = fill_tf_buf(tf);
 614
 615         /* W. */
 616         if (!(!quiet && ((progressinterval &&
 617                         testcalls % progressinterval == 0) ||
 618                        (debug &&
 619                         (monitorstart == -1 ||
 620                          (offset + size > monitorstart &&
 621                           (monitorend == -1 || offset <= monitorend)))))))
 622                 return;
 623
 624         prt("%06lu %lu.%06lu %.*s%-10s %#08x %s %#08x\t(0x%x bytes)\n",
 625                 testcalls, tv->tv_sec, tv->tv_usec, max_tf_len,
 626                 tf_num, ops[op],
 627                 offset, op == OP_TRUNCATE ? " to " : "thru",
 628                 offset + size - 1, size);
 629 }
 630
 631 void
 632 doread(unsigned offset, unsigned size)
 633 {
 634         struct timeval t;
 635         off_t ret;
 636         unsigned iret;
 637         struct test_file *tf = get_tf();
 638         int fd = tf->fd;
 639
 640         offset -= offset % readbdy;
 641         gettimeofday(&t, NULL);
 642         if (size == 0) {
 643                 if (!quiet && testcalls > simulatedopcount)
 644                         prt("skipping zero size read\n");
 645                 log4(OP_SKIPPED, OP_READ, offset, size, &t);
 646                 return;
 647         }
 648         if (size + offset > file_size) {
 649                 if (!quiet && testcalls > simulatedopcount)
 650                         prt("skipping seek/read past end of file\n");
 651                 log4(OP_SKIPPED, OP_READ, offset, size, &t);
 652                 return;
 653         }
 654
 655         log4(OP_READ, offset, size, 0, &t);
 656
 657         if (testcalls <= simulatedopcount)
 658                 return;
 659
 660         output_line(tf, OP_READ, offset, size, &t);
 661
 662         ret = lseek(fd, (off_t)offset, SEEK_SET);
 663         if (ret == (off_t)-1) {
 664                 prterr("doread: lseek");
 665                 report_failure(140);
 666         }
 667         iret = read(fd, temp_buf, size);
 668         if (!quiet && (debug > 1 &&
 669                         (monitorstart == -1 ||
 670                          (offset + size > monitorstart &&
 671                           (monitorend == -1 || offset <= monitorend))))) {
 672                 gettimeofday(&t, NULL);
 673                 prt("       %lu.%06lu read done\n", t.tv_sec, t.tv_usec);
 674         }
 675         if (iret != size) {
 676                 if (iret == -1)
 677                         prterr("doread: read");
 678                 else
 679                         prt("short read: 0x%x bytes instead of 0x%x\n",
 680                             iret, size);
 681                 report_failure(141);
 682         }
 683         check_buffers(offset, size);
 684 }
 685
 686
 687 void
 688 domapread(unsigned offset, unsigned size)
 689 {
 690         struct timeval t;
 691         unsigned pg_offset;
 692         unsigned map_size;
 693         char    *p;
 694         struct test_file *tf = get_tf();
 695         int fd = tf->fd;
 696
 697         offset -= offset % readbdy;
 698         gettimeofday(&t, NULL);
 699         if (size == 0) {
 700                 if (!quiet && testcalls > simulatedopcount)
 701                         prt("skipping zero size read\n");
 702                 log4(OP_SKIPPED, OP_MAPREAD, offset, size, &t);
 703                 return;
 704         }
 705         if (size + offset > file_size) {
 706                 if (!quiet && testcalls > simulatedopcount)
 707                         prt("skipping seek/read past end of file\n");
 708                 log4(OP_SKIPPED, OP_MAPREAD, offset, size, &t);
 709                 return;
 710         }
 711
 712         log4(OP_MAPREAD, offset, size, 0, &t);
 713
 714         if (testcalls <= simulatedopcount)
 715                 return;
 716
 717         output_line(tf, OP_MAPREAD, offset, size, &t);
 718
 719         pg_offset = offset & page_mask;
 720         map_size  = pg_offset + size;
 721
 722         if ((p = mmap(0, map_size, PROT_READ, MAP_FILE | MAP_SHARED, fd,
 723                       (off_t)(offset - pg_offset))) == MAP_FAILED) {
 724                 prterr("domapread: mmap");
 725                 report_failure(190);
 726         }
 727         if (!quiet && (debug > 1 &&
 728                         (monitorstart == -1 ||
 729                          (offset + size > monitorstart &&
 730                           (monitorend == -1 || offset <= monitorend))))) {
 731                 gettimeofday(&t, NULL);
 732                 prt("       %lu.%06lu mmap done\n", t.tv_sec, t.tv_usec);
 733         }
 734         memcpy(temp_buf, p + pg_offset, size);
 735         if (!quiet && (debug > 1 &&
 736                         (monitorstart == -1 ||
 737                          (offset + size > monitorstart &&
 738                           (monitorend == -1 || offset <= monitorend))))) {
 739                 gettimeofday(&t, NULL);
 740                 prt("       %lu.%06lu memcpy done\n", t.tv_sec, t.tv_usec);
 741         }
 742         if (munmap(p, map_size) != 0) {
 743                 prterr("domapread: munmap");
 744                 report_failure(191);
 745         }
 746         if (!quiet && (debug > 1 &&
 747                         (monitorstart == -1 ||
 748                          (offset + size > monitorstart &&
 749                           (monitorend == -1 || offset <= monitorend))))) {
 750                 gettimeofday(&t, NULL);
 751                 prt("       %lu.%06lu munmap done\n", t.tv_sec, t.tv_usec);
 752         }
 753
 754         check_buffers(offset, size);
 755 }
 756
 757
 758 void
 759 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
 760 {
 761         while (size--) {
 762                 good_buf[offset] = testcalls % 256;
 763                 if (offset % 2)
 764                         good_buf[offset] += original_buf[offset];
 765                 offset++;
 766         }
 767 }
 768
 769
 770 void
 771 dowrite(unsigned offset, unsigned size)
 772 {
 773         struct timeval t;
 774         off_t ret;
 775         unsigned iret;
 776         struct test_file *tf = get_tf();
 777         int fd = tf->fd;
 778
 779         offset -= offset % writebdy;
 780         gettimeofday(&t, NULL);
 781         if (size == 0) {
 782                 if (!quiet && testcalls > simulatedopcount)
 783                         prt("skipping zero size write\n");
 784                 log4(OP_SKIPPED, OP_WRITE, offset, size, &t);
 785                 return;
 786         }
 787
 788         log4(OP_WRITE, offset, size, file_size, &t);
 789
 790         gendata(original_buf, good_buf, offset, size);
 791         if (file_size < offset + size) {
 792                 if (file_size < offset)
 793                         memset(good_buf + file_size, '\0', offset - file_size);
 794                 file_size = offset + size;
 795                 if (lite) {
 796                         warn("Lite file size bug in fsx!");
 797                         report_failure(149);
 798                 }
 799         }
 800
 801         if (testcalls <= simulatedopcount)
 802                 return;
 803
 804         output_line(tf, OP_WRITE, offset, size, &t);
 805
 806         ret = lseek(fd, (off_t)offset, SEEK_SET);
 807         if (ret == (off_t)-1) {
 808                 prterr("dowrite: lseek");
 809                 report_failure(150);
 810         }
 811         iret = write(fd, good_buf + offset, size);
 812         if (!quiet && (debug > 1 &&
 813                         (monitorstart == -1 ||
 814                          (offset + size > monitorstart &&
 815                           (monitorend == -1 || offset <= monitorend))))) {
 816                 gettimeofday(&t, NULL);
 817                 prt("       %lu.%06lu write done\n", t.tv_sec, t.tv_usec);
 818         }
 819         if (iret != size) {
 820                 if (iret == -1)
 821                         prterr("dowrite: write");
 822                 else
 823                         prt("short write: 0x%x bytes instead of 0x%x\n",
 824                             iret, size);
 825                 report_failure(151);
 826         }
 827 }
 828
 829
 830 void
 831 domapwrite(unsigned offset, unsigned size)
 832 {
 833         struct timeval t;
 834         unsigned pg_offset;
 835         unsigned map_size;
 836         off_t    cur_filesize;
 837         char    *p;
 838         struct test_file *tf = get_tf();
 839         int fd = tf->fd;
 840
 841         offset -= offset % writebdy;
 842         gettimeofday(&t, NULL);
 843         if (size == 0) {
 844                 if (!quiet && testcalls > simulatedopcount)
 845                         prt("skipping zero size write\n");
 846                 log4(OP_SKIPPED, OP_MAPWRITE, offset, size, &t);
 847                 return;
 848         }
 849         cur_filesize = file_size;
 850
 851         log4(OP_MAPWRITE, offset, size, 0, &t);
 852
 853         gendata(original_buf, good_buf, offset, size);
 854         if (file_size < offset + size) {
 855                 if (file_size < offset)
 856                         memset(good_buf + file_size, '\0', offset - file_size);
 857                 file_size = offset + size;
 858                 if (lite) {
 859                         warn("Lite file size bug in fsx!");
 860                         report_failure(200);
 861                 }
 862         }
 863
 864         if (testcalls <= simulatedopcount)
 865                 return;
 866
 867         output_line(tf, OP_MAPWRITE, offset, size, &t);
 868
 869         if (file_size > cur_filesize) {
 870                 if (ftruncate(fd, file_size) == -1) {
 871                         prterr("domapwrite: ftruncate");
 872                         exit(201);
 873                 }
 874                 if (!quiet && (debug > 1 &&
 875                                (monitorstart == -1 ||
 876                                 (offset + size > monitorstart &&
 877                                  (monitorend == -1 || offset <= monitorend))))) {
 878                         gettimeofday(&t, NULL);
 879                         prt("       %lu.%06lu truncate done\n", t.tv_sec, t.tv_usec);
 880         }
 881         }
 882         pg_offset = offset & page_mask;
 883         map_size  = pg_offset + size;
 884
 885         if ((p = mmap(0, map_size, PROT_READ | PROT_WRITE, MAP_FILE|MAP_SHARED,
 886                       fd, (off_t)(offset - pg_offset))) == MAP_FAILED) {
 887                 prterr("domapwrite: mmap");
 888                 report_failure(202);
 889         }
 890         if (!quiet && (debug > 1 &&
 891                         (monitorstart == -1 ||
 892                          (offset + size > monitorstart &&
 893                           (monitorend == -1 || offset <= monitorend))))) {
 894                 gettimeofday(&t, NULL);
 895                 prt("       %lu.%06lu mmap done\n", t.tv_sec, t.tv_usec);
 896         }
 897         memcpy(p + pg_offset, good_buf + offset, size);
 898         if (!quiet && (debug > 1 &&
 899                         (monitorstart == -1 ||
 900                          (offset + size > monitorstart &&
 901                           (monitorend == -1 || offset <= monitorend))))) {
 902                 gettimeofday(&t, NULL);
 903                 prt("       %lu.%06lu memcpy done\n", t.tv_sec, t.tv_usec);
 904         }
 905         if (msync(p, map_size, 0) != 0) {
 906                 prterr("domapwrite: msync");
 907                 report_failure(203);
 908         }
 909         if (!quiet && (debug > 1 &&
 910                         (monitorstart == -1 ||
 911                          (offset + size > monitorstart &&
 912                           (monitorend == -1 || offset <= monitorend))))) {
 913                 gettimeofday(&t, NULL);
 914                 prt("       %lu.%06lu msync done\n", t.tv_sec, t.tv_usec);
 915         }
 916         if (munmap(p, map_size) != 0) {
 917                 prterr("domapwrite: munmap");
 918                 report_failure(204);
 919         }
 920         if (!quiet && (debug > 1 &&
 921                         (monitorstart == -1 ||
 922                          (offset + size > monitorstart &&
 923                           (monitorend == -1 || offset <= monitorend))))) {
 924                 gettimeofday(&t, NULL);
 925                 prt("       %lu.%06lu munmap done\n", t.tv_sec, t.tv_usec);
 926         }
 927 }
 928
 929
 930 void
 931 dotruncate(unsigned size)
 932 {
 933         struct timeval t;
 934         int oldsize = file_size;
 935         struct test_file *tf = get_tf();
 936         int fd = tf->fd;
 937
 938         size -= size % truncbdy;
 939         gettimeofday(&t, NULL);
 940         if (size > biggest) {
 941                 biggest = size;
 942                 if (!quiet && testcalls > simulatedopcount)
 943                         prt("truncating to largest ever: 0x%x\n", size);
 944         }
 945
 946         log4(OP_TRUNCATE, size, (unsigned)file_size, 0, &t);
 947
 948         if (size > file_size)
 949                 memset(good_buf + file_size, '\0', size - file_size);
 950         file_size = size;
 951
 952         if (testcalls <= simulatedopcount)
 953                 return;
 954
 955         output_line(tf, OP_TRUNCATE, oldsize, size, &t);
 956
 957         if (ftruncate(fd, (off_t)size) == -1) {
 958                 prt("ftruncate1: %x\n", size);
 959                 prterr("dotruncate: ftruncate");
 960                 report_failure(160);
 961         }
 962         if (!quiet && debug > 1) {
 963                 gettimeofday(&t, NULL);
 964                 prt("       %lu.%06lu trunc done\n", t.tv_sec, t.tv_usec);
 965         }
 966 }
 967
 968
 969 void
 970 writefileimage()
 971 {
 972         ssize_t iret;
 973         int fd = get_fd();
 974
 975         if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
 976                 prterr("writefileimage: lseek");
 977                 report_failure(171);
 978         }
 979         iret = write(fd, good_buf, file_size);
 980         if ((off_t)iret != file_size) {
 981                 if (iret == -1)
 982                         prterr("writefileimage: write");
 983                 else
 984                         prt("short write: 0x%lx bytes instead of 0x%llx\n",
 985                             (unsigned long)iret,
 986                             (unsigned long long)file_size);
 987                 report_failure(172);
 988         }
 989         if (lite ? 0 : ftruncate(fd, file_size) == -1) {
 990                 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
 991                 prterr("writefileimage: ftruncate");
 992                 report_failure(173);
 993         }
 994 }
 995
 996
 997 void
 998 docloseopen(void)
 999 {
1000         struct timeval t;
1001         struct test_file *tf = get_tf();
1002
1003         if (testcalls <= simulatedopcount)
1004                 return;
1005
1006         gettimeofday(&t, NULL);
1007         log4(OP_CLOSEOPEN, file_size, (unsigned)file_size, 0, &t);
1008
1009         if (debug)
1010                 prt("%06lu %lu.%06lu close/open\n", testcalls, t.tv_sec,
1011                     t.tv_usec);
1012         if (close(tf->fd)) {
1013                 prterr("docloseopen: close");
1014                 report_failure(180);
1015         }
1016         if (!quiet && debug > 1) {
1017                 gettimeofday(&t, NULL);
1018                 prt("       %lu.%06lu close done\n", t.tv_sec, t.tv_usec);
1019         }
1020         tf->fd = open(tf->path, O_RDWR, 0);
1021         if (tf->fd < 0) {
1022                 prterr("docloseopen: open");
1023                 report_failure(181);
1024         }
1025         if (!quiet && debug > 1) {
1026                 gettimeofday(&t, NULL);
1027                 prt("       %lu.%06lu open done\n", t.tv_sec, t.tv_usec);
1028         }
1029 }
1030
1031
1032 void
1033 test(void)
1034 {
1035         unsigned long   offset;
1036         unsigned long   size = maxoplen;
1037         unsigned long   rv = random();
1038         unsigned long   op = rv % (3 + !lite + mapped_writes);
1039
1040         /* turn off the map read if necessary */
1041
1042         if (op == 2 && !mapped_reads)
1043             op = 0;
1044
1045         if (simulatedopcount > 0 && testcalls == simulatedopcount)
1046                 writefileimage();
1047
1048         testcalls++;
1049
1050         if (debugstart > 0 && testcalls >= debugstart)
1051                 debug = 1;
1052
1053         if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
1054                 prt("%lu...\n", testcalls);
1055
1056         /*
1057          * READ:        op = 0
1058          * WRITE:       op = 1
1059          * MAPREAD:     op = 2
1060          * TRUNCATE:    op = 3
1061          * MAPWRITE:    op = 3 or 4
1062          */
1063         if (lite ? 0 : op == 3 && (style & 1) == 0) /* vanilla truncate? */
1064                 dotruncate(random() % maxfilelen);
1065         else {
1066                 if (randomoplen)
1067                         size = random() % (maxoplen+1);
1068                 if (lite ? 0 : op == 3)
1069                         dotruncate(size);
1070                 else {
1071                         offset = random();
1072                         if (op == 1 || op == (lite ? 3 : 4)) {
1073                                 offset %= maxfilelen;
1074                                 if (offset + size > maxfilelen)
1075                                         size = maxfilelen - offset;
1076                                 if (op != 1)
1077                                         domapwrite(offset, size);
1078                                 else
1079                                         dowrite(offset, size);
1080                         } else {
1081                                 if (file_size)
1082                                         offset %= file_size;
1083                                 else
1084                                         offset = 0;
1085                                 if (offset + size > file_size)
1086                                         size = file_size - offset;
1087                                 if (op != 0)
1088                                         domapread(offset, size);
1089                                 else
1090                                         doread(offset, size);
1091                         }
1092                 }
1093         }
1094         if (sizechecks && testcalls > simulatedopcount)
1095                 check_size();
1096         if (closeprob && (rv >> 3) < (1 << 28) / closeprob)
1097                 docloseopen();
1098 }
1099
1100
1101 void
1102 cleanup(sig)
1103         int     sig;
1104 {
1105         if (sig)
1106                 prt("signal %d\n", sig);
1107         prt("testcalls = %lu\n", testcalls);
1108         exit(sig);
1109 }
1110
1111
1112 void
1113 usage(void)
1114 {
1115         fprintf(stdout, "usage: %s",
1116                 "fsx [-dnqLOW] [-b opnum] [-c Prob] [-l flen] [-m "
1117 "start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t "
1118 "truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] "
1119 "[ -I random|rotate ] fname [additional paths to fname..]\n"
1120 "       -b opnum: beginning operation number (default 1)\n"
1121 "       -c P: 1 in P chance of file close+open at each op (default infinity)\n"
1122 "       -d: debug output for all operations [-d -d = more debugging]\n"
1123 "       -l flen: the upper bound on file size (default 262144)\n"
1124 "       -m startop:endop: monitor (print debug output) specified byte rang"
1125 "(default 0:infinity)\n"
1126 "       -n: no verifications of file size\n"
1127 "       -o oplen: the upper bound on operation size (default 65536)\n"
1128 "       -p progressinterval: debug output at specified operation interval\n"
1129 "       -q: quieter operation\n"
1130 "       -r readbdy: 4096 would make reads page aligned (default 1)\n"
1131 "       -s style: 1 gives smaller truncates (default 0)\n"
1132 "       -t truncbdy: 4096 would make truncates page aligned (default 1)\n"
1133 "       -w writebdy: 4096 would make writes page aligned (default 1)\n"
1134 "       -D startingop: debug output starting at specified operation\n"
1135 "       -L: fsxLite - no file creations & no file size changes\n"
1136 "       -N numops: total # operations to do (default infinity)\n"
1137 "       -O: use oplen (see -o flag) for every op (default random)\n"
1138 "       -P: save .fsxlog and .fsxgood files in dirpath (default ./)\n"
1139 "       -S seed: for random # generator (default 1) 0 gets timestamp\n"
1140 "       -W: mapped write operations DISabled\n"
1141 "        -R: read() system calls only (mapped reads disabled)\n"
1142 "       -I: When multiple paths to the file are given each operation uses"
1143 "           a different path.  Iterate through them in order with 'rotate'"
1144 "           or chose then at 'random'.  (defaults to random)\n"
1145 "       fname: this filename is REQUIRED (no default)\n");
1146         exit(90);
1147 }
1148
1149
1150 int
1151 getnum(char *s, char **e)
1152 {
1153         int ret = -1;
1154
1155         *e = (char *) 0;
1156         ret = strtol(s, e, 0);
1157         if (*e)
1158                 switch (**e) {
1159                 case 'b':
1160                 case 'B':
1161                         ret *= 512;
1162                         *e = *e + 1;
1163                         break;
1164                 case 'k':
1165                 case 'K':
1166                         ret *= 1024;
1167                         *e = *e + 1;
1168                         break;
1169                 case 'm':
1170                 case 'M':
1171                         ret *= 1024*1024;
1172                         *e = *e + 1;
1173                         break;
1174                 case 'w':
1175                 case 'W':
1176                         ret *= 4;
1177                         *e = *e + 1;
1178                         break;
1179                 }
1180         return (ret);
1181 }
1182
1183 int
1184 main(int argc, char **argv)
1185 {
1186         int     i, style, ch;
1187         char    *endp;
1188         int  dirpath = 0;
1189
1190         goodfile[0] = 0;
1191         logfile[0] = 0;
1192
1193         page_size = getpagesize();
1194         page_mask = page_size - 1;
1195
1196         setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
1197
1198         while ((ch = getopt(argc, argv,
1199                                 "b:c:dl:m:no:p:qr:s:t:w:D:I:LN:OP:RS:W"))
1200                != EOF)
1201                 switch (ch) {
1202                 case 'b':
1203                         simulatedopcount = getnum(optarg, &endp);
1204                         if (!quiet)
1205                                 fprintf(stdout, "Will begin at operation"
1206                                         "%ld\n",
1207                                         simulatedopcount);
1208                         if (simulatedopcount == 0)
1209                                 usage();
1210                         simulatedopcount -= 1;
1211                         break;
1212                 case 'c':
1213                         closeprob = getnum(optarg, &endp);
1214                         if (!quiet)
1215                                 fprintf(stdout,
1216                                         "Chance of close/open is 1 in %d\n",
1217                                         closeprob);
1218                         if (closeprob <= 0)
1219                                 usage();
1220                         break;
1221                 case 'd':
1222                         debug++;
1223                         break;
1224                 case 'l':
1225                         maxfilelen = getnum(optarg, &endp);
1226                         if (maxfilelen <= 0)
1227                                 usage();
1228                         break;
1229                 case 'm':
1230                         monitorstart = getnum(optarg, &endp);
1231                         if (monitorstart < 0)
1232                                 usage();
1233                         if (!endp || *endp++ != ':')
1234                                 usage();
1235                         monitorend = getnum(endp, &endp);
1236                         if (monitorend < 0)
1237                                 usage();
1238                         if (monitorend == 0)
1239                                 monitorend = -1; /* aka infinity */
1240                         debug = 1;
1241                 case 'n':
1242                         sizechecks = 0;
1243                         break;
1244                 case 'o':
1245                         maxoplen = getnum(optarg, &endp);
1246                         if (maxoplen <= 0)
1247                                 usage();
1248                         break;
1249                 case 'p':
1250                         progressinterval = getnum(optarg, &endp);
1251                         if (progressinterval < 0)
1252                                 usage();
1253                         break;
1254                 case 'q':
1255                         quiet = 1;
1256                         break;
1257                 case 'r':
1258                         readbdy = getnum(optarg, &endp);
1259                         if (readbdy <= 0)
1260                                 usage();
1261                         break;
1262                 case 's':
1263                         style = getnum(optarg, &endp);
1264                         if (style < 0 || style > 1)
1265                                 usage();
1266                         break;
1267                 case 't':
1268                         truncbdy = getnum(optarg, &endp);
1269                         if (truncbdy <= 0)
1270                                 usage();
1271                         break;
1272                 case 'w':
1273                         writebdy = getnum(optarg, &endp);
1274                         if (writebdy <= 0)
1275                                 usage();
1276                         break;
1277                 case 'D':
1278                         debugstart = getnum(optarg, &endp);
1279                         if (debugstart < 1)
1280                                 usage();
1281                         break;
1282                 case 'I':
1283                         assign_fd_policy(optarg);
1284                         break;
1285                 case 'L':
1286                         lite = 1;
1287                         break;
1288                 case 'N':
1289                         numops = getnum(optarg, &endp);
1290                         if (numops < 0)
1291                                 usage();
1292                         break;
1293                 case 'O':
1294                         randomoplen = 0;
1295                         break;
1296                 case 'P':
1297                         strncpy(goodfile, optarg, sizeof(goodfile));
1298                         strcat(goodfile, "/");
1299                         strncpy(logfile, optarg, sizeof(logfile));
1300                         strcat(logfile, "/");
1301                         dirpath = 1;
1302                         break;
1303                 case 'R':
1304                         mapped_reads = 0;
1305                         break;
1306                 case 'S':
1307                         seed = getnum(optarg, &endp);
1308                         if (seed == 0)
1309                                 seed = time(0) % 10000;
1310                         if (!quiet)
1311                                 fprintf(stdout, "Seed set to %d\n", seed);
1312                         if (seed < 0)
1313                                 usage();
1314                         break;
1315                 case 'W':
1316                         mapped_writes = 0;
1317                         if (!quiet)
1318                                 fprintf(stdout, "mapped writes DISABLED\n");
1319                         break;
1320
1321                 default:
1322                         usage();
1323                         /* NOTREACHED */
1324                 }
1325         argc -= optind;
1326         argv += optind;
1327         if (argc < 1)
1328                 usage();
1329         fname = argv[0];
1330
1331         signal(SIGHUP,  cleanup);
1332         signal(SIGINT,  cleanup);
1333         signal(SIGPIPE, cleanup);
1334         signal(SIGALRM, cleanup);
1335         signal(SIGTERM, cleanup);
1336         signal(SIGXCPU, cleanup);
1337         signal(SIGXFSZ, cleanup);
1338         signal(SIGVTALRM,       cleanup);
1339         signal(SIGUSR1, cleanup);
1340         signal(SIGUSR2, cleanup);
1341
1342         initstate(seed, state, 256);
1343         setstate(state);
1344
1345         open_test_files(argv, argc);
1346
1347         strncat(goodfile, dirpath ? my_basename(fname) : fname, 256);
1348         strcat (goodfile, ".fsxgood");
1349         fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1350         if (fsxgoodfd < 0) {
1351                 prterr(goodfile);
1352                 exit(92);
1353         }
1354         strncat(logfile, dirpath ? my_basename(fname) : fname, 256);
1355         strcat (logfile, ".fsxlog");
1356         fsxlogf = fopen(logfile, "w");
1357         if (fsxlogf == NULL) {
1358                 prterr(logfile);
1359                 exit(93);
1360         }
1361         if (lite) {
1362                 off_t ret;
1363                 int fd = get_fd();
1364                 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
1365                 if (file_size == (off_t)-1) {
1366                         prterr(fname);
1367                         warn("main: lseek eof");
1368                         exit(94);
1369                 }
1370                 ret = lseek(fd, (off_t)0, SEEK_SET);
1371                 if (ret == (off_t)-1) {
1372                         prterr(fname);
1373                         warn("main: lseek 0");
1374                         exit(95);
1375                 }
1376         }
1377         original_buf = (char *) malloc(maxfilelen);
1378         for (i = 0; i < maxfilelen; i++)
1379                 original_buf[i] = random() % 256;
1380         good_buf = (char *) malloc(maxfilelen);
1381         memset(good_buf, '\0', maxfilelen);
1382         temp_buf = (char *) malloc(maxoplen);
1383         memset(temp_buf, '\0', maxoplen);
1384         if (lite) {     /* zero entire existing file */
1385                 ssize_t written;
1386                 int fd = get_fd();
1387
1388                 written = write(fd, good_buf, (size_t)maxfilelen);
1389                 if (written != maxfilelen) {
1390                         if (written == -1) {
1391                                 prterr(fname);
1392                                 warn("main: error on write");
1393                         } else
1394                                 warn("main: short write, 0x%x bytes instead"
1395                                         "of 0x%x\n",
1396                                      (unsigned)written, maxfilelen);
1397                         exit(98);
1398                 }
1399         } else
1400                 check_trunc_hack();
1401
1402         while (numops == -1 || numops--)
1403                 test();
1404
1405         close_test_files();
1406         prt("All operations completed A-OK!\n");
1407
1408         exit(0);
1409         return 0;
1410 }