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 #endif
  45 #include <fcntl.h>
  46 #include <sys/mman.h>
  47 #ifndef MAP_FILE
  48 # define MAP_FILE 0
  49 #endif
  50 #include <limits.h>
  51 #include <signal.h>
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55 #include <unistd.h>
  56 #include <stdarg.h>
  57 #include <errno.h>
  58
  59 #define NUMPRINTCOLUMNS 32      /* # columns of data to print on each line */
  60
  61 /*
  62  *      A log entry is an operation and a bunch of arguments.
  63  */
  64
  65 struct log_entry {
  66         int     operation;
  67         int     args[3];
  68 };
  69
  70 #define LOGSIZE 1000
  71
  72 struct log_entry        oplog[LOGSIZE]; /* the log */
  73 int                     logptr = 0;     /* current position in log */
  74 int                     logcount = 0;   /* total ops */
  75
  76 /*
  77  *      Define operations
  78  */
  79
  80 #define OP_READ         1
  81 #define OP_WRITE        2
  82 #define OP_TRUNCATE     3
  83 #define OP_CLOSEOPEN    4
  84 #define OP_MAPREAD      5
  85 #define OP_MAPWRITE     6
  86 #define OP_SKIPPED      7
  87
  88 int page_size;
  89 int page_mask;
  90
  91 char    *original_buf;                  /* a pointer to the original data */
  92 char    *good_buf;                      /* a pointer to the correct data */
  93 char    *temp_buf;                      /* a pointer to the current data */
  94 char    *fname;                         /* name of our test file */
  95 int     fd;                             /* fd for our test file */
  96
  97 off_t           file_size = 0;
  98 off_t           biggest = 0;
  99 char            state[256];
 100 unsigned long   testcalls = 0;          /* calls to function "test" */
 101
 102 unsigned long   simulatedopcount = 0;   /* -b flag */
 103 int     closeprob = 0;                  /* -c flag */
 104 int     debug = 0;                      /* -d flag */
 105 unsigned long   debugstart = 0;         /* -D flag */
 106 unsigned long   maxfilelen = 256 * 1024;        /* -l flag */
 107 int     sizechecks = 1;                 /* -n flag disables them */
 108 int     maxoplen = 64 * 1024;           /* -o flag */
 109 int     quiet = 0;                      /* -q flag */
 110 unsigned long progressinterval = 0;     /* -p flag */
 111 int     readbdy = 1;                    /* -r flag */
 112 int     style = 0;                      /* -s flag */
 113 int     truncbdy = 1;                   /* -t flag */
 114 int     writebdy = 1;                   /* -w flag */
 115 long    monitorstart = -1;              /* -m flag */
 116 long    monitorend = -1;                /* -m flag */
 117 int     lite = 0;                       /* -L flag */
 118 long    numops = -1;                    /* -N flag */
 119 int     randomoplen = 1;                /* -O flag disables it */
 120 int     seed = 1;                       /* -S flag */
 121 int     mapped_writes = 1;              /* -W flag disables */
 122 int     mapped_reads = 1;               /* -R flag disables it */
 123 int     fsxgoodfd = 0;
 124 FILE *  fsxlogf = NULL;
 125 int badoff = -1;
 126 int closeopen = 0;
 127
 128
 129 void
 130 vwarnc(code, fmt, ap)
 131         int code;
 132         const char *fmt;
 133         va_list ap;
 134 {
 135         fprintf(stderr, "fsx: ");
 136         if (fmt != NULL) {
 137                 vfprintf(stderr, fmt, ap);
 138                 fprintf(stderr, ": ");
 139         }
 140         fprintf(stderr, "%s\n", strerror(code));
 141 }
 142
 143
 144 void
 145 warn(const char * fmt, ...)
 146 {
 147         va_list ap;
 148         va_start(ap, fmt);
 149         vwarnc(errno, fmt, ap);
 150         va_end(ap);
 151 }
 152
 153
 154 void
 155 prt(char *fmt, ...)
 156 {
 157         va_list args;
 158
 159         va_start(args, fmt);
 160         vfprintf(stdout, fmt, args);
 161         if (fsxlogf)
 162                 vfprintf(fsxlogf, fmt, args);
 163         va_end(args);
 164 }
 165
 166 void
 167 prterr(char *prefix)
 168 {
 169         prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
 170 }
 171
 172
 173 void
 174 log4(int operation, int arg0, int arg1, int arg2)
 175 {
 176         struct log_entry *le;
 177
 178         le = &oplog[logptr];
 179         le->operation = operation;
 180         if (closeopen)
 181                 le->operation = ~ le->operation;
 182         le->args[0] = arg0;
 183         le->args[1] = arg1;
 184         le->args[2] = arg2;
 185         logptr++;
 186         logcount++;
 187         if (logptr >= LOGSIZE)
 188                 logptr = 0;
 189 }
 190
 191
 192 void
 193 logdump(void)
 194 {
 195         int     i, count, down;
 196         struct log_entry        *lp;
 197
 198         prt("LOG DUMP (%d total operations):\n", logcount);
 199         if (logcount < LOGSIZE) {
 200                 i = 0;
 201                 count = logcount;
 202         } else {
 203                 i = logptr;
 204                 count = LOGSIZE;
 205         }
 206         for ( ; count > 0; count--) {
 207                 int opnum;
 208
 209                 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
 210                 prt("%d(%d mod 256): ", opnum, opnum%256);
 211                 lp = &oplog[i];
 212                 if ((closeopen = lp->operation < 0))
 213                         lp->operation = ~ lp->operation;
 214
 215                 switch (lp->operation) {
 216                 case OP_MAPREAD:
 217                         prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
 218                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 219                             lp->args[1]);
 220                         if (badoff >= lp->args[0] && badoff <
 221                                                      lp->args[0] + lp->args[1])
 222                                 prt("\t***RRRR***");
 223                         break;
 224                 case OP_MAPWRITE:
 225                         prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
 226                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 227                             lp->args[1]);
 228                         if (badoff >= lp->args[0] && badoff <
 229                                                      lp->args[0] + lp->args[1])
 230                                 prt("\t******WWWW");
 231                         break;
 232                 case OP_READ:
 233                         prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
 234                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 235                             lp->args[1]);
 236                         if (badoff >= lp->args[0] &&
 237                             badoff < lp->args[0] + lp->args[1])
 238                                 prt("\t***RRRR***");
 239                         break;
 240                 case OP_WRITE:
 241                         prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
 242                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 243                             lp->args[1]);
 244                         if (lp->args[0] > lp->args[2])
 245                                 prt(" HOLE");
 246                         else if (lp->args[0] + lp->args[1] > lp->args[2])
 247                                 prt(" EXTEND");
 248                         if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
 249                             badoff < lp->args[0] + lp->args[1])
 250                                 prt("\t***WWWW");
 251                         break;
 252                 case OP_TRUNCATE:
 253                         down = lp->args[0] < lp->args[1];
 254                         prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
 255                             down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
 256                         if (badoff >= lp->args[!down] &&
 257                             badoff < lp->args[!!down])
 258                                 prt("\t******WWWW");
 259                         break;
 260                 case OP_SKIPPED:
 261                         prt("SKIPPED (no operation)");
 262                         break;
 263                 default:
 264                         prt("BOGUS LOG ENTRY (operation code = %d)!",
 265                             lp->operation);
 266                 }
 267                 if (closeopen)
 268                         prt("\n\t\tCLOSE/OPEN");
 269                 prt("\n");
 270                 i++;
 271                 if (i == LOGSIZE)
 272                         i = 0;
 273         }
 274 }
 275
 276
 277 void
 278 save_buffer(char *buffer, off_t bufferlength, int fd)
 279 {
 280         off_t ret;
 281         ssize_t byteswritten;
 282
 283         if (fd <= 0 || bufferlength == 0)
 284                 return;
 285
 286         if (bufferlength > SSIZE_MAX) {
 287                 prt("fsx flaw: overflow in save_buffer\n");
 288                 exit(67);
 289         }
 290         if (lite) {
 291                 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 292                 if (size_by_seek == (off_t)-1)
 293                         prterr("save_buffer: lseek eof");
 294                 else if (bufferlength > size_by_seek) {
 295                         warn("save_buffer: .fsxgood file too short... will
 296 save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
 297                              (unsigned long long)bufferlength);
 298                         bufferlength = size_by_seek;
 299                 }
 300         }
 301
 302         ret = lseek(fd, (off_t)0, SEEK_SET);
 303         if (ret == (off_t)-1)
 304                 prterr("save_buffer: lseek 0");
 305
 306         byteswritten = write(fd, buffer, (size_t)bufferlength);
 307         if (byteswritten != bufferlength) {
 308                 if (byteswritten == -1)
 309                         prterr("save_buffer write");
 310                 else
 311                         warn("save_buffer: short write, 0x%x bytes instead
 312 of 0x%llx\n",
 313                              (unsigned)byteswritten,
 314                              (unsigned long long)bufferlength);
 315         }
 316 }
 317
 318
 319 void
 320 report_failure(int status)
 321 {
 322         logdump();
 323
 324         if (fsxgoodfd) {
 325                 if (good_buf) {
 326                         save_buffer(good_buf, file_size, fsxgoodfd);
 327                         prt("Correct content saved for comparison\n");
 328                         prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
 329                             fname, fname);
 330                 }
 331                 close(fsxgoodfd);
 332         }
 333         exit(status);
 334 }
 335
 336
 337 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
 338                                         *(((unsigned char *)(cp)) + 1)))
 339
 340 void
 341 check_buffers(unsigned offset, unsigned size)
 342 {
 343         unsigned char c, t;
 344         unsigned i = 0;
 345         unsigned n = 0;
 346         unsigned op = 0;
 347         unsigned bad = 0;
 348
 349         if (memcmp(good_buf + offset, temp_buf, size) != 0) {
 350                 prt("READ BAD DATA: offset = 0x%x, size = 0x%x\n",
 351                     offset, size);
 352                 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
 353                 while (size > 0) {
 354                         c = good_buf[offset];
 355                         t = temp_buf[i];
 356                         if (c != t) {
 357                                 if (n == 0) {
 358                                         bad = short_at(&temp_buf[i]);
 359                                         prt("0x%5x\t0x%04x\t0x%04x", offset,
 360                                             short_at(&good_buf[offset]), bad);
 361                                         op = temp_buf[offset & 1 ? i+1 : i];
 362                                 }
 363                                 n++;
 364                                 badoff = offset;
 365                         }
 366                         offset++;
 367                         i++;
 368                         size--;
 369                 }
 370                 if (n) {
 371                         prt("\t0x%5x\n", n);
 372                         if (bad)
 373                                 prt("operation# (mod 256) for the bad data
 374 may be %u\n", ((unsigned)op & 0xff));
 375                         else
 376                                 prt("operation# (mod 256) for the bad data
 377 unknown, check HOLE and EXTEND ops\n");
 378                 } else
 379                         prt("????????????????\n");
 380                 report_failure(110);
 381         }
 382 }
 383
 384
 385 void
 386 check_size(void)
 387 {
 388         struct stat     statbuf;
 389         off_t   size_by_seek;
 390
 391         if (fstat(fd, &statbuf)) {
 392                 prterr("check_size: fstat");
 393                 statbuf.st_size = -1;
 394         }
 395         size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 396         if (file_size != statbuf.st_size || file_size != size_by_seek) {
 397                 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
 398                     (unsigned long long)file_size,
 399                     (unsigned long long)statbuf.st_size,
 400                     (unsigned long long)size_by_seek);
 401                 report_failure(120);
 402         }
 403 }
 404
 405
 406 void
 407 check_trunc_hack(void)
 408 {
 409         struct stat statbuf;
 410
 411         ftruncate(fd, (off_t)0);
 412         ftruncate(fd, (off_t)100000);
 413         fstat(fd, &statbuf);
 414         if (statbuf.st_size != (off_t)100000) {
 415                 prt("no extend on truncate! not posix!\n");
 416                 exit(130);
 417         }
 418         ftruncate(fd, 0);
 419 }
 420
 421
 422 void
 423 doread(unsigned offset, unsigned size)
 424 {
 425         off_t ret;
 426         unsigned iret;
 427
 428         offset -= offset % readbdy;
 429         if (size == 0) {
 430                 if (!quiet && testcalls > simulatedopcount)
 431                         prt("skipping zero size read\n");
 432                 log4(OP_SKIPPED, OP_READ, offset, size);
 433                 return;
 434         }
 435         if (size + offset > file_size) {
 436                 if (!quiet && testcalls > simulatedopcount)
 437                         prt("skipping seek/read past end of file\n");
 438                 log4(OP_SKIPPED, OP_READ, offset, size);
 439                 return;
 440         }
 441
 442         log4(OP_READ, offset, size, 0);
 443
 444         if (testcalls <= simulatedopcount)
 445                 return;
 446
 447         if (!quiet && ((progressinterval &&
 448                         testcalls % progressinterval == 0) ||
 449                        (debug &&
 450                         (monitorstart == -1 ||
 451                          (offset + size > monitorstart &&
 452                           (monitorend == -1 || offset <= monitorend))))))
 453                 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 454                     offset, offset + size - 1, size);
 455         ret = lseek(fd, (off_t)offset, SEEK_SET);
 456         if (ret == (off_t)-1) {
 457                 prterr("doread: lseek");
 458                 report_failure(140);
 459         }
 460         iret = read(fd, temp_buf, size);
 461         if (iret != size) {
 462                 if (iret == -1)
 463                         prterr("doread: read");
 464                 else
 465                         prt("short read: 0x%x bytes instead of 0x%x\n",
 466                             iret, size);
 467                 report_failure(141);
 468         }
 469         check_buffers(offset, size);
 470 }
 471
 472
 473 void
 474 domapread(unsigned offset, unsigned size)
 475 {
 476         unsigned pg_offset;
 477         unsigned map_size;
 478         char    *p;
 479
 480         offset -= offset % readbdy;
 481         if (size == 0) {
 482                 if (!quiet && testcalls > simulatedopcount)
 483                         prt("skipping zero size read\n");
 484                 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
 485                 return;
 486         }
 487         if (size + offset > file_size) {
 488                 if (!quiet && testcalls > simulatedopcount)
 489                         prt("skipping seek/read past end of file\n");
 490                 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
 491                 return;
 492         }
 493
 494         log4(OP_MAPREAD, offset, size, 0);
 495
 496         if (testcalls <= simulatedopcount)
 497                 return;
 498
 499         if (!quiet && ((progressinterval &&
 500                         testcalls % progressinterval == 0) ||
 501                        (debug &&
 502                         (monitorstart == -1 ||
 503                          (offset + size > monitorstart &&
 504                           (monitorend == -1 || offset <= monitorend))))))
 505                 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 506                     offset, offset + size - 1, size);
 507
 508         pg_offset = offset & page_mask;
 509         map_size  = pg_offset + size;
 510
 511         if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_FILE |
 512 MAP_SHARED, fd,
 513                               (off_t)(offset - pg_offset))) == (char *)-1) {
 514                 prterr("domapread: mmap");
 515                 report_failure(190);
 516         }
 517         memcpy(temp_buf, p + pg_offset, size);
 518         if (munmap(p, map_size) != 0) {
 519                 prterr("domapread: munmap");
 520                 report_failure(191);
 521         }
 522
 523         check_buffers(offset, size);
 524 }
 525
 526
 527 void
 528 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
 529 {
 530         while (size--) {
 531                 good_buf[offset] = testcalls % 256;
 532                 if (offset % 2)
 533                         good_buf[offset] += original_buf[offset];
 534                 offset++;
 535         }
 536 }
 537
 538
 539 void
 540 dowrite(unsigned offset, unsigned size)
 541 {
 542         off_t ret;
 543         unsigned iret;
 544
 545         offset -= offset % writebdy;
 546         if (size == 0) {
 547                 if (!quiet && testcalls > simulatedopcount)
 548                         prt("skipping zero size write\n");
 549                 log4(OP_SKIPPED, OP_WRITE, offset, size);
 550                 return;
 551         }
 552
 553         log4(OP_WRITE, offset, size, file_size);
 554
 555         gendata(original_buf, good_buf, offset, size);
 556         if (file_size < offset + size) {
 557                 if (file_size < offset)
 558                         memset(good_buf + file_size, '\0', offset - file_size);
 559                 file_size = offset + size;
 560                 if (lite) {
 561                         warn("Lite file size bug in fsx!");
 562                         report_failure(149);
 563                 }
 564         }
 565
 566         if (testcalls <= simulatedopcount)
 567                 return;
 568
 569         if (!quiet && ((progressinterval &&
 570                         testcalls % progressinterval == 0) ||
 571                        (debug &&
 572                         (monitorstart == -1 ||
 573                          (offset + size > monitorstart &&
 574                           (monitorend == -1 || offset <= monitorend))))))
 575                 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 576                     offset, offset + size - 1, size);
 577         ret = lseek(fd, (off_t)offset, SEEK_SET);
 578         if (ret == (off_t)-1) {
 579                 prterr("dowrite: lseek");
 580                 report_failure(150);
 581         }
 582         iret = write(fd, good_buf + offset, size);
 583         if (iret != size) {
 584                 if (iret == -1)
 585                         prterr("dowrite: write");
 586                 else
 587                         prt("short write: 0x%x bytes instead of 0x%x\n",
 588                             iret, size);
 589                 report_failure(151);
 590         }
 591 }
 592
 593
 594 void
 595 domapwrite(unsigned offset, unsigned size)
 596 {
 597         unsigned pg_offset;
 598         unsigned map_size;
 599         off_t    cur_filesize;
 600         char    *p;
 601
 602         offset -= offset % writebdy;
 603         if (size == 0) {
 604                 if (!quiet && testcalls > simulatedopcount)
 605                         prt("skipping zero size write\n");
 606                 log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
 607                 return;
 608         }
 609         cur_filesize = file_size;
 610
 611         log4(OP_MAPWRITE, offset, size, 0);
 612
 613         gendata(original_buf, good_buf, offset, size);
 614         if (file_size < offset + size) {
 615                 if (file_size < offset)
 616                         memset(good_buf + file_size, '\0', offset - file_size);
 617                 file_size = offset + size;
 618                 if (lite) {
 619                         warn("Lite file size bug in fsx!");
 620                         report_failure(200);
 621                 }
 622         }
 623
 624         if (testcalls <= simulatedopcount)
 625                 return;
 626
 627         if (!quiet && ((progressinterval &&
 628                         testcalls % progressinterval == 0) ||
 629                        (debug &&
 630                         (monitorstart == -1 ||
 631                          (offset + size > monitorstart &&
 632                           (monitorend == -1 || offset <= monitorend))))))
 633                 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 634                     offset, offset + size - 1, size);
 635
 636         if (file_size > cur_filesize) {
 637                 if (ftruncate(fd, file_size) == -1) {
 638                         prterr("domapwrite: ftruncate");
 639                         exit(201);
 640                 }
 641         }
 642         pg_offset = offset & page_mask;
 643         map_size  = pg_offset + size;
 644
 645         if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
 646                               MAP_FILE | MAP_SHARED, fd,
 647                               (off_t)(offset - pg_offset))) == (char *)-1) {
 648                 prterr("domapwrite: mmap");
 649                 report_failure(202);
 650         }
 651         memcpy(p + pg_offset, good_buf + offset, size);
 652         if (msync(p, map_size, 0) != 0) {
 653                 prterr("domapwrite: msync");
 654                 report_failure(203);
 655         }
 656         if (munmap(p, map_size) != 0) {
 657                 prterr("domapwrite: munmap");
 658                 report_failure(204);
 659         }
 660 }
 661
 662
 663 void
 664 dotruncate(unsigned size)
 665 {
 666         int oldsize = file_size;
 667
 668         size -= size % truncbdy;
 669         if (size > biggest) {
 670                 biggest = size;
 671                 if (!quiet && testcalls > simulatedopcount)
 672                         prt("truncating to largest ever: 0x%x\n", size);
 673         }
 674
 675         log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
 676
 677         if (size > file_size)
 678                 memset(good_buf + file_size, '\0', size - file_size);
 679         file_size = size;
 680
 681         if (testcalls <= simulatedopcount)
 682                 return;
 683
 684         if ((progressinterval && testcalls % progressinterval == 0) ||
 685             (debug && (monitorstart == -1 || monitorend == -1 ||
 686                        size <= monitorend)))
 687                 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize,
 688 size);
 689         if (ftruncate(fd, (off_t)size) == -1) {
 690                 prt("ftruncate1: %x\n", size);
 691                 prterr("dotruncate: ftruncate");
 692                 report_failure(160);
 693         }
 694 }
 695
 696
 697 void
 698 writefileimage()
 699 {
 700         ssize_t iret;
 701
 702         if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
 703                 prterr("writefileimage: lseek");
 704                 report_failure(171);
 705         }
 706         iret = write(fd, good_buf, file_size);
 707         if ((off_t)iret != file_size) {
 708                 if (iret == -1)
 709                         prterr("writefileimage: write");
 710                 else
 711                         prt("short write: 0x%x bytes instead of 0x%llx\n",
 712                             iret, (unsigned long long)file_size);
 713                 report_failure(172);
 714         }
 715         if (lite ? 0 : ftruncate(fd, file_size) == -1) {
 716                 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
 717                 prterr("writefileimage: ftruncate");
 718                 report_failure(173);
 719         }
 720 }
 721
 722
 723 void
 724 docloseopen(void)
 725 {
 726         if (testcalls <= simulatedopcount)
 727                 return;
 728
 729         if (debug)
 730                 prt("%lu close/open\n", testcalls);
 731         if (close(fd)) {
 732                 prterr("docloseopen: close");
 733                 report_failure(180);
 734         }
 735         fd = open(fname, O_RDWR, 0);
 736         if (fd < 0) {
 737                 prterr("docloseopen: open");
 738                 report_failure(181);
 739         }
 740 }
 741
 742
 743 void
 744 test(void)
 745 {
 746         unsigned long   offset;
 747         unsigned long   size = maxoplen;
 748         unsigned long   rv = random();
 749         unsigned long   op = rv % (3 + !lite + mapped_writes);
 750
 751         /* turn off the map read if necessary */
 752
 753         if (op == 2 && !mapped_reads)
 754             op = 0;
 755
 756         if (simulatedopcount > 0 && testcalls == simulatedopcount)
 757                 writefileimage();
 758
 759         testcalls++;
 760
 761         if (closeprob)
 762                 closeopen = (rv >> 3) < (1 << 28) / closeprob;
 763
 764         if (debugstart > 0 && testcalls >= debugstart)
 765                 debug = 1;
 766
 767         if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
 768                 prt("%lu...\n", testcalls);
 769
 770         /*
 771          * READ:        op = 0
 772          * WRITE:       op = 1
 773          * MAPREAD:     op = 2
 774          * TRUNCATE:    op = 3
 775          * MAPWRITE:    op = 3 or 4
 776          */
 777         if (lite ? 0 : op == 3 && (style & 1) == 0) /* vanilla truncate? */
 778                 dotruncate(random() % maxfilelen);
 779         else {
 780                 if (randomoplen)
 781                         size = random() % (maxoplen+1);
 782                 if (lite ? 0 : op == 3)
 783                         dotruncate(size);
 784                 else {
 785                         offset = random();
 786                         if (op == 1 || op == (lite ? 3 : 4)) {
 787                                 offset %= maxfilelen;
 788                                 if (offset + size > maxfilelen)
 789                                         size = maxfilelen - offset;
 790                                 if (op != 1)
 791                                         domapwrite(offset, size);
 792                                 else
 793                                         dowrite(offset, size);
 794                         } else {
 795                                 if (file_size)
 796                                         offset %= file_size;
 797                                 else
 798                                         offset = 0;
 799                                 if (offset + size > file_size)
 800                                         size = file_size - offset;
 801                                 if (op != 0)
 802                                         domapread(offset, size);
 803                                 else
 804                                         doread(offset, size);
 805                         }
 806                 }
 807         }
 808         if (sizechecks && testcalls > simulatedopcount)
 809                 check_size();
 810         if (closeopen)
 811                 docloseopen();
 812 }
 813
 814
 815 void
 816 cleanup(sig)
 817         int     sig;
 818 {
 819         if (sig)
 820                 prt("signal %d\n", sig);
 821         prt("testcalls = %lu\n", testcalls);
 822         exit(sig);
 823 }
 824
 825
 826 void
 827 usage(void)
 828 {
 829         fprintf(stdout, "usage: %s",
 830                 "fsx [-dnqLOW] [-b opnum] [-c Prob] [-l flen] [-m
 831 start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t
 832 truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed]
 833 fname\n\
 834         -b opnum: beginning operation number (default 1)\n\
 835         -c P: 1 in P chance of file close+open at each op (default infinity)\n\
 836         -d: debug output for all operations\n\
 837         -l flen: the upper bound on file size (default 262144)\n\
 838         -m startop:endop: monitor (print debug output) specified byte range
 839 (default 0:infinity)\n\
 840         -n: no verifications of file size\n\
 841         -o oplen: the upper bound on operation size (default 65536)\n\
 842         -p progressinterval: debug output at specified operation interval\n\
 843         -q: quieter operation\n\
 844         -r readbdy: 4096 would make reads page aligned (default 1)\n\
 845         -s style: 1 gives smaller truncates (default 0)\n\
 846         -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
 847         -w writebdy: 4096 would make writes page aligned (default 1)\n\
 848         -D startingop: debug output starting at specified operation\n\
 849         -L: fsxLite - no file creations & no file size changes\n\
 850         -N numops: total # operations to do (default infinity)\n\
 851         -O: use oplen (see -o flag) for every op (default random)\n\
 852         -P: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
 853         -S seed: for random # generator (default 1) 0 gets timestamp\n\
 854         -W: mapped write operations DISabled\n\
 855         -R: read() system calls only (mapped reads disabled)\n\
 856         fname: this filename is REQUIRED (no default)\n");
 857         exit(90);
 858 }
 859
 860
 861 int
 862 getnum(char *s, char **e)
 863 {
 864         int ret = -1;
 865
 866         *e = (char *) 0;
 867         ret = strtol(s, e, 0);
 868         if (*e)
 869                 switch (**e) {
 870                 case 'b':
 871                 case 'B':
 872                         ret *= 512;
 873                         *e = *e + 1;
 874                         break;
 875                 case 'k':
 876                 case 'K':
 877                         ret *= 1024;
 878                         *e = *e + 1;
 879                         break;
 880                 case 'm':
 881                 case 'M':
 882                         ret *= 1024*1024;
 883                         *e = *e + 1;
 884                         break;
 885                 case 'w':
 886                 case 'W':
 887                         ret *= 4;
 888                         *e = *e + 1;
 889                         break;
 890                 }
 891         return (ret);
 892 }
 893
 894
 895 int
 896 main(int argc, char **argv)
 897 {
 898         int     i, style, ch;
 899         char    *endp;
 900         char goodfile[1024];
 901         char logfile[1024];
 902
 903         goodfile[0] = 0;
 904         logfile[0] = 0;
 905
 906         page_size = getpagesize();
 907         page_mask = page_size - 1;
 908
 909         setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
 910
 911         while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:D:LN:OP:RS:W"))
 912                != EOF)
 913                 switch (ch) {
 914                 case 'b':
 915                         simulatedopcount = getnum(optarg, &endp);
 916                         if (!quiet)
 917                                 fprintf(stdout, "Will begin at operation
 918 %ld\n",
 919                                         simulatedopcount);
 920                         if (simulatedopcount == 0)
 921                                 usage();
 922                         simulatedopcount -= 1;
 923                         break;
 924                 case 'c':
 925                         closeprob = getnum(optarg, &endp);
 926                         if (!quiet)
 927                                 fprintf(stdout,
 928                                         "Chance of close/open is 1 in %d\n",
 929                                         closeprob);
 930                         if (closeprob <= 0)
 931                                 usage();
 932                         break;
 933                 case 'd':
 934                         debug = 1;
 935                         break;
 936                 case 'l':
 937                         maxfilelen = getnum(optarg, &endp);
 938                         if (maxfilelen <= 0)
 939                                 usage();
 940                         break;
 941                 case 'm':
 942                         monitorstart = getnum(optarg, &endp);
 943                         if (monitorstart < 0)
 944                                 usage();
 945                         if (!endp || *endp++ != ':')
 946                                 usage();
 947                         monitorend = getnum(endp, &endp);
 948                         if (monitorend < 0)
 949                                 usage();
 950                         if (monitorend == 0)
 951                                 monitorend = -1; /* aka infinity */
 952                         debug = 1;
 953                 case 'n':
 954                         sizechecks = 0;
 955                         break;
 956                 case 'o':
 957                         maxoplen = getnum(optarg, &endp);
 958                         if (maxoplen <= 0)
 959                                 usage();
 960                         break;
 961                 case 'p':
 962                         progressinterval = getnum(optarg, &endp);
 963                         if (progressinterval < 0)
 964                                 usage();
 965                         break;
 966                 case 'q':
 967                         quiet = 1;
 968                         break;
 969                 case 'r':
 970                         readbdy = getnum(optarg, &endp);
 971                         if (readbdy <= 0)
 972                                 usage();
 973                         break;
 974                 case 's':
 975                         style = getnum(optarg, &endp);
 976                         if (style < 0 || style > 1)
 977                                 usage();
 978                         break;
 979                 case 't':
 980                         truncbdy = getnum(optarg, &endp);
 981                         if (truncbdy <= 0)
 982                                 usage();
 983                         break;
 984                 case 'w':
 985                         writebdy = getnum(optarg, &endp);
 986                         if (writebdy <= 0)
 987                                 usage();
 988                         break;
 989                 case 'D':
 990                         debugstart = getnum(optarg, &endp);
 991                         if (debugstart < 1)
 992                                 usage();
 993                         break;
 994                 case 'L':
 995                         lite = 1;
 996                         break;
 997                 case 'N':
 998                         numops = getnum(optarg, &endp);
 999                         if (numops < 0)
1000                                 usage();
1001                         break;
1002                 case 'O':
1003                         randomoplen = 0;
1004                         break;
1005                 case 'P':
1006                         strncpy(goodfile, optarg, sizeof(goodfile));
1007                         strcat(goodfile, "/");
1008                         strncpy(logfile, optarg, sizeof(logfile));
1009                         strcat(logfile, "/");
1010                         break;
1011                 case 'R':
1012                         mapped_reads = 0;
1013                         break;
1014                 case 'S':
1015                         seed = getnum(optarg, &endp);
1016                         if (seed == 0)
1017                                 seed = time(0) % 10000;
1018                         if (!quiet)
1019                                 fprintf(stdout, "Seed set to %d\n", seed);
1020                         if (seed < 0)
1021                                 usage();
1022                         break;
1023                 case 'W':
1024                         mapped_writes = 0;
1025                         if (!quiet)
1026                                 fprintf(stdout, "mapped writes DISABLED\n");
1027                         break;
1028
1029                 default:
1030                         usage();
1031                         /* NOTREACHED */
1032                 }
1033         argc -= optind;
1034         argv += optind;
1035         if (argc != 1)
1036                 usage();
1037         fname = argv[0];
1038
1039         signal(SIGHUP,  cleanup);
1040         signal(SIGINT,  cleanup);
1041         signal(SIGPIPE, cleanup);
1042         signal(SIGALRM, cleanup);
1043         signal(SIGTERM, cleanup);
1044         signal(SIGXCPU, cleanup);
1045         signal(SIGXFSZ, cleanup);
1046         signal(SIGVTALRM,       cleanup);
1047         signal(SIGUSR1, cleanup);
1048         signal(SIGUSR2, cleanup);
1049
1050         initstate(seed, state, 256);
1051         setstate(state);
1052         fd = open(fname, O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC), 0666);
1053         if (fd < 0) {
1054                 prterr(fname);
1055                 exit(91);
1056         }
1057         strncat(goodfile, fname, 256);
1058         strcat (goodfile, ".fsxgood");
1059         fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1060         if (fsxgoodfd < 0) {
1061                 prterr(goodfile);
1062                 exit(92);
1063         }
1064         strncat(logfile, fname, 256);
1065         strcat (logfile, ".fsxlog");
1066         fsxlogf = fopen(logfile, "w");
1067         if (fsxlogf == NULL) {
1068                 prterr(logfile);
1069                 exit(93);
1070         }
1071         if (lite) {
1072                 off_t ret;
1073                 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
1074                 if (file_size == (off_t)-1) {
1075                         prterr(fname);
1076                         warn("main: lseek eof");
1077                         exit(94);
1078                 }
1079                 ret = lseek(fd, (off_t)0, SEEK_SET);
1080                 if (ret == (off_t)-1) {
1081                         prterr(fname);
1082                         warn("main: lseek 0");
1083                         exit(95);
1084                 }
1085         }
1086         original_buf = (char *) malloc(maxfilelen);
1087         for (i = 0; i < maxfilelen; i++)
1088                 original_buf[i] = random() % 256;
1089         good_buf = (char *) malloc(maxfilelen);
1090         memset(good_buf, '\0', maxfilelen);
1091         temp_buf = (char *) malloc(maxoplen);
1092         memset(temp_buf, '\0', maxoplen);
1093         if (lite) {     /* zero entire existing file */
1094                 ssize_t written;
1095
1096                 written = write(fd, good_buf, (size_t)maxfilelen);
1097                 if (written != maxfilelen) {
1098                         if (written == -1) {
1099                                 prterr(fname);
1100                                 warn("main: error on write");
1101                         } else
1102                                 warn("main: short write, 0x%x bytes instead
1103 of 0x%x\n",
1104                                      (unsigned)written, maxfilelen);
1105                         exit(98);
1106                 }
1107         } else
1108                 check_trunc_hack();
1109
1110         while (numops == -1 || numops--)
1111                 test();
1112
1113         if (close(fd)) {
1114                 prterr("close");
1115                 report_failure(99);
1116         }
1117         prt("All operations completed A-OK!\n");
1118
1119         exit(0);
1120         return 0;
1121 }