ltp/fsx.c

   1 /*
   2  *      Copyright (C) 1991, NeXT Computer, Inc.  All Rights Reserverd.
   3  *
   4  *      File:   fsx.c
   5  *      Author: Avadis Tevanian, Jr.
   6  *
   7  *      File system exerciser.
   8  *
   9  *      Rewritten 8/98 by Conrad Minshall.
  10  *
  11  *      Small changes to work under Linux -- davej.
  12  */
  13
  14 #include "global.h"
  15
  16 #include <limits.h>
  17 #include <time.h>
  18 #include <strings.h>
  19 #include <sys/file.h>
  20 #include <sys/mman.h>
  21 #ifdef HAVE_ERR_H
  22 #include <err.h>
  23 #endif
  24 #include <signal.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29 #include <errno.h>
  30 #ifdef AIO
  31 #include <libaio.h>
  32 #endif
  33
  34 #ifndef MAP_FILE
  35 # define MAP_FILE 0
  36 #endif
  37
  38 #define NUMPRINTCOLUMNS 32      /* # columns of data to print on each line */
  39
  40 /*
  41  *      A log entry is an operation and a bunch of arguments.
  42  */
  43
  44 struct log_entry {
  45         int     operation;
  46         int     args[3];
  47 };
  48
  49 #define LOGSIZE 1000
  50
  51 struct log_entry        oplog[LOGSIZE]; /* the log */
  52 int                     logptr = 0;     /* current position in log */
  53 int                     logcount = 0;   /* total ops */
  54
  55 /*
  56  *      Define operations
  57  */
  58
  59 #define OP_READ         1
  60 #define OP_WRITE        2
  61 #define OP_TRUNCATE     3
  62 #define OP_CLOSEOPEN    4
  63 #define OP_MAPREAD      5
  64 #define OP_MAPWRITE     6
  65 #define OP_SKIPPED      7
  66
  67 #undef PAGE_SIZE
  68 #define PAGE_SIZE       getpagesize()
  69 #undef PAGE_MASK
  70 #define PAGE_MASK       (PAGE_SIZE - 1)
  71
  72 char    *original_buf;                  /* a pointer to the original data */
  73 char    *good_buf;                      /* a pointer to the correct data */
  74 char    *temp_buf;                      /* a pointer to the current data */
  75 char    *fname;                         /* name of our test file */
  76 int     fd;                             /* fd for our test file */
  77
  78 off_t           file_size = 0;
  79 off_t           biggest = 0;
  80 char            state[256];
  81 unsigned long   testcalls = 0;          /* calls to function "test" */
  82
  83 unsigned long   simulatedopcount = 0;   /* -b flag */
  84 int     closeprob = 0;                  /* -c flag */
  85 int     debug = 0;                      /* -d flag */
  86 unsigned long   debugstart = 0;         /* -D flag */
  87 int     do_fsync = 0;                   /* -f flag */
  88 unsigned long   maxfilelen = 256 * 1024;        /* -l flag */
  89 int     sizechecks = 1;                 /* -n flag disables them */
  90 int     maxoplen = 64 * 1024;           /* -o flag */
  91 int     quiet = 0;                      /* -q flag */
  92 unsigned long progressinterval = 0;     /* -p flag */
  93 int     readbdy = 1;                    /* -r flag */
  94 int     style = 0;                      /* -s flag */
  95 int     prealloc = 0;                   /* -x flag */
  96 int     truncbdy = 1;                   /* -t flag */
  97 int     writebdy = 1;                   /* -w flag */
  98 long    monitorstart = -1;              /* -m flag */
  99 long    monitorend = -1;                /* -m flag */
 100 int     lite = 0;                       /* -L flag */
 101 long    numops = -1;                    /* -N flag */
 102 int     randomoplen = 1;                /* -O flag disables it */
 103 int     seed = 1;                       /* -S flag */
 104 int     mapped_writes = 1;              /* -W flag disables */
 105 int     mapped_reads = 1;               /* -R flag disables it */
 106 int     fsxgoodfd = 0;
 107 int     o_direct;                       /* -Z */
 108 int     aio = 0;
 109
 110 #ifdef AIO
 111 int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset);
 112 #define READ 0
 113 #define WRITE 1
 114 #define fsxread(a,b,c,d)        aio_rw(READ, a,b,c,d)
 115 #define fsxwrite(a,b,c,d)       aio_rw(WRITE, a,b,c,d)
 116 #else
 117 #define fsxread(a,b,c,d)        read(a,b,c)
 118 #define fsxwrite(a,b,c,d)       write(a,b,c)
 119 #endif
 120
 121 FILE *  fsxlogf = NULL;
 122 int badoff = -1;
 123 int closeopen = 0;
 124
 125 static void *round_up(void *ptr, unsigned long align, unsigned long offset)
 126 {
 127         unsigned long ret = (unsigned long)ptr;
 128
 129         ret = ((ret + align - 1) & ~(align - 1));
 130         ret += offset;
 131         return (void *)ret;
 132 }
 133
 134 void
 135 vwarnc(int code, const char *fmt, va_list ap) {
 136   fprintf(stderr, "fsx: ");
 137   if (fmt != NULL) {
 138         vfprintf(stderr, fmt, ap);
 139         fprintf(stderr, ": ");
 140   }
 141   fprintf(stderr, "%s\n", strerror(code));
 142 }
 143
 144 void
 145 warn(const char * fmt, ...)  {
 146         va_list ap;
 147         va_start(ap, fmt);
 148         vwarnc(errno, fmt, ap);
 149         va_end(ap);
 150 }
 151
 152 void
 153 prt(char *fmt, ...)
 154 {
 155         va_list args;
 156
 157         va_start(args, fmt);
 158         vfprintf(stdout, fmt, args);
 159         if (fsxlogf)
 160                 vfprintf(fsxlogf, fmt, args);
 161         va_end(args);
 162 }
 163
 164 void
 165 prterr(char *prefix)
 166 {
 167         prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
 168 }
 169
 170
 171 void
 172 log4(int operation, int arg0, int arg1, int arg2)
 173 {
 174         struct log_entry *le;
 175
 176         le = &oplog[logptr];
 177         le->operation = operation;
 178         if (closeopen)
 179                 le->operation = ~ le->operation;
 180         le->args[0] = arg0;
 181         le->args[1] = arg1;
 182         le->args[2] = arg2;
 183         logptr++;
 184         logcount++;
 185         if (logptr >= LOGSIZE)
 186                 logptr = 0;
 187 }
 188
 189
 190 void
 191 logdump(void)
 192 {
 193         int     i, count, down;
 194         struct log_entry        *lp;
 195
 196         prt("LOG DUMP (%d total operations):\n", logcount);
 197         if (logcount < LOGSIZE) {
 198                 i = 0;
 199                 count = logcount;
 200         } else {
 201                 i = logptr;
 202                 count = LOGSIZE;
 203         }
 204         for ( ; count > 0; count--) {
 205                 int opnum;
 206
 207                 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
 208                 prt("%d(%d mod 256): ", opnum, opnum%256);
 209                 lp = &oplog[i];
 210                 if ((closeopen = lp->operation < 0))
 211                         lp->operation = ~ lp->operation;
 212
 213                 switch (lp->operation) {
 214                 case OP_MAPREAD:
 215                         prt("MAPREAD\t0x%x thru 0x%x\t(0x%x bytes)",
 216                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 217                             lp->args[1]);
 218                         if (badoff >= lp->args[0] && badoff <
 219                                                      lp->args[0] + lp->args[1])
 220                                 prt("\t***RRRR***");
 221                         break;
 222                 case OP_MAPWRITE:
 223                         prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
 224                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 225                             lp->args[1]);
 226                         if (badoff >= lp->args[0] && badoff <
 227                                                      lp->args[0] + lp->args[1])
 228                                 prt("\t******WWWW");
 229                         break;
 230                 case OP_READ:
 231                         prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
 232                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 233                             lp->args[1]);
 234                         if (badoff >= lp->args[0] &&
 235                             badoff < lp->args[0] + lp->args[1])
 236                                 prt("\t***RRRR***");
 237                         break;
 238                 case OP_WRITE:
 239                         prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
 240                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 241                             lp->args[1]);
 242                         if (lp->args[0] > lp->args[2])
 243                                 prt(" HOLE");
 244                         else if (lp->args[0] + lp->args[1] > lp->args[2])
 245                                 prt(" EXTEND");
 246                         if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
 247                             badoff < lp->args[0] + lp->args[1])
 248                                 prt("\t***WWWW");
 249                         break;
 250                 case OP_TRUNCATE:
 251                         down = lp->args[0] < lp->args[1];
 252                         prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
 253                             down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
 254                         if (badoff >= lp->args[!down] &&
 255                             badoff < lp->args[!!down])
 256                                 prt("\t******WWWW");
 257                         break;
 258                 case OP_SKIPPED:
 259                         prt("SKIPPED (no operation)");
 260                         break;
 261                 default:
 262                         prt("BOGUS LOG ENTRY (operation code = %d)!",
 263                             lp->operation);
 264                 }
 265                 if (closeopen)
 266                         prt("\n\t\tCLOSE/OPEN");
 267                 prt("\n");
 268                 i++;
 269                 if (i == LOGSIZE)
 270                         i = 0;
 271         }
 272 }
 273
 274
 275 void
 276 save_buffer(char *buffer, off_t bufferlength, int fd)
 277 {
 278         off_t ret;
 279         ssize_t byteswritten;
 280
 281         if (fd <= 0 || bufferlength == 0)
 282                 return;
 283
 284         if (bufferlength > SSIZE_MAX) {
 285                 prt("fsx flaw: overflow in save_buffer\n");
 286                 exit(67);
 287         }
 288         if (lite) {
 289                 off_t size_by_seek = lseek(fd, (off_t)0, L_XTND);
 290                 if (size_by_seek == (off_t)-1)
 291                         prterr("save_buffer: lseek eof");
 292                 else if (bufferlength > size_by_seek) {
 293                         warn("save_buffer: .fsxgood file too short... will save 0x%qx bytes instead of 0x%qx\n", (unsigned long long)size_by_seek,
 294                              (unsigned long long)bufferlength);
 295                         bufferlength = size_by_seek;
 296                 }
 297         }
 298
 299         ret = lseek(fd, (off_t)0, SEEK_SET);
 300         if (ret == (off_t)-1)
 301                 prterr("save_buffer: lseek 0");
 302
 303         byteswritten = write(fd, buffer, (size_t)bufferlength);
 304         if (byteswritten != bufferlength) {
 305                 if (byteswritten == -1)
 306                         prterr("save_buffer write");
 307                 else
 308                         warn("save_buffer: short write, 0x%x bytes instead of 0x%qx\n",
 309                              (unsigned)byteswritten,
 310                              (unsigned long long)bufferlength);
 311         }
 312 }
 313
 314
 315 void
 316 report_failure(int status)
 317 {
 318         logdump();
 319
 320         if (fsxgoodfd) {
 321                 if (good_buf) {
 322                         save_buffer(good_buf, file_size, fsxgoodfd);
 323                         prt("Correct content saved for comparison\n");
 324                         prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
 325                             fname, fname);
 326                 }
 327                 close(fsxgoodfd);
 328         }
 329         exit(status);
 330 }
 331
 332
 333 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
 334                                         *(((unsigned char *)(cp)) + 1)))
 335
 336 void
 337 check_buffers(unsigned offset, unsigned size)
 338 {
 339         unsigned char c, t;
 340         unsigned i = 0;
 341         unsigned n = 0;
 342         unsigned op = 0;
 343         unsigned bad = 0;
 344
 345         if (bcmp(good_buf + offset, temp_buf, size) != 0) {
 346                 prt("READ BAD DATA: offset = 0x%x, size = 0x%x, fname = %s\n",
 347                     offset, size, fname);
 348                 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
 349                 while (size > 0) {
 350                         c = good_buf[offset];
 351                         t = temp_buf[i];
 352                         if (c != t) {
 353                                 if (n < 16) {
 354                                         bad = short_at(&temp_buf[i]);
 355                                         prt("0x%5x\t0x%04x\t0x%04x", offset,
 356                                             short_at(&good_buf[offset]), bad);
 357                                         op = temp_buf[offset & 1 ? i+1 : i];
 358                                         prt("\t0x%5x\n", n);
 359                                         if (op)
 360                                                 prt("operation# (mod 256) for "
 361                                                   "the bad data may be %u\n",
 362                                                 ((unsigned)op & 0xff));
 363                                         else
 364                                                 prt("operation# (mod 256) for "
 365                                                   "the bad data unknown, check"
 366                                                   " HOLE and EXTEND ops\n");
 367                                 }
 368                                 n++;
 369                                 badoff = offset;
 370                         }
 371                         offset++;
 372                         i++;
 373                         size--;
 374                 }
 375                 report_failure(110);
 376         }
 377 }
 378
 379
 380 void
 381 check_size(void)
 382 {
 383         struct stat     statbuf;
 384         off_t   size_by_seek;
 385
 386         if (fstat(fd, &statbuf)) {
 387                 prterr("check_size: fstat");
 388                 statbuf.st_size = -1;
 389         }
 390         size_by_seek = lseek(fd, (off_t)0, L_XTND);
 391         if (file_size != statbuf.st_size || file_size != size_by_seek) {
 392                 prt("Size error: expected 0x%qx stat 0x%qx seek 0x%qx\n",
 393                     (unsigned long long)file_size,
 394                     (unsigned long long)statbuf.st_size,
 395                     (unsigned long long)size_by_seek);
 396                 report_failure(120);
 397         }
 398 }
 399
 400
 401 void
 402 check_trunc_hack(void)
 403 {
 404         struct stat statbuf;
 405
 406         ftruncate(fd, (off_t)0);
 407         ftruncate(fd, (off_t)100000);
 408         fstat(fd, &statbuf);
 409         if (statbuf.st_size != (off_t)100000) {
 410                 prt("no extend on truncate! not posix!\n");
 411                 exit(130);
 412         }
 413         ftruncate(fd, 0);
 414 }
 415
 416
 417 void
 418 doread(unsigned offset, unsigned size)
 419 {
 420         off_t ret;
 421         unsigned iret;
 422
 423         offset -= offset % readbdy;
 424         if (o_direct)
 425                 size -= size % readbdy;
 426         if (size == 0) {
 427                 if (!quiet && testcalls > simulatedopcount && !o_direct)
 428                         prt("skipping zero size read\n");
 429                 log4(OP_SKIPPED, OP_READ, offset, size);
 430                 return;
 431         }
 432         if (size + offset > file_size) {
 433                 if (!quiet && testcalls > simulatedopcount)
 434                         prt("skipping seek/read past end of file\n");
 435                 log4(OP_SKIPPED, OP_READ, offset, size);
 436                 return;
 437         }
 438
 439         log4(OP_READ, offset, size, 0);
 440
 441         if (testcalls <= simulatedopcount)
 442                 return;
 443
 444         if (!quiet &&
 445                 ((progressinterval && testcalls % progressinterval == 0)  ||
 446                 (debug &&
 447                        (monitorstart == -1 ||
 448                         (offset + size > monitorstart &&
 449                         (monitorend == -1 || offset <= monitorend))))))
 450                 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 451                     offset, offset + size - 1, size);
 452         ret = lseek(fd, (off_t)offset, SEEK_SET);
 453         if (ret == (off_t)-1) {
 454                 prterr("doread: lseek");
 455                 report_failure(140);
 456         }
 457         iret = fsxread(fd, temp_buf, size, offset);
 458         if (iret != size) {
 459                 if (iret == -1)
 460                         prterr("doread: read");
 461                 else
 462                         prt("short read: 0x%x bytes instead of 0x%x\n",
 463                             iret, size);
 464                 report_failure(141);
 465         }
 466         check_buffers(offset, size);
 467 }
 468
 469
 470 void
 471 domapread(unsigned offset, unsigned size)
 472 {
 473         unsigned pg_offset;
 474         unsigned map_size;
 475         char    *p;
 476
 477         offset -= offset % readbdy;
 478         if (size == 0) {
 479                 if (!quiet && testcalls > simulatedopcount)
 480                         prt("skipping zero size read\n");
 481                 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
 482                 return;
 483         }
 484         if (size + offset > file_size) {
 485                 if (!quiet && testcalls > simulatedopcount)
 486                         prt("skipping seek/read past end of file\n");
 487                 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
 488                 return;
 489         }
 490
 491         log4(OP_MAPREAD, offset, size, 0);
 492
 493         if (testcalls <= simulatedopcount)
 494                 return;
 495
 496         if (!quiet &&
 497                 ((progressinterval && testcalls % progressinterval == 0) ||
 498                        (debug &&
 499                        (monitorstart == -1 ||
 500                         (offset + size > monitorstart &&
 501                         (monitorend == -1 || offset <= monitorend))))))
 502                 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 503                     offset, offset + size - 1, size);
 504
 505         pg_offset = offset & PAGE_MASK;
 506         map_size  = pg_offset + size;
 507
 508         if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_SHARED, fd,
 509                               (off_t)(offset - pg_offset))) == (char *)-1) {
 510                 prterr("domapread: mmap");
 511                 report_failure(190);
 512         }
 513         memcpy(temp_buf, p + pg_offset, size);
 514         if (munmap(p, map_size) != 0) {
 515                 prterr("domapread: munmap");
 516                 report_failure(191);
 517         }
 518
 519         check_buffers(offset, size);
 520 }
 521
 522
 523 void
 524 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
 525 {
 526         while (size--) {
 527                 good_buf[offset] = testcalls % 256;
 528                 if (offset % 2)
 529                         good_buf[offset] += original_buf[offset];
 530                 offset++;
 531         }
 532 }
 533
 534
 535 void
 536 dowrite(unsigned offset, unsigned size)
 537 {
 538         off_t ret;
 539         unsigned iret;
 540
 541         offset -= offset % writebdy;
 542         if (o_direct)
 543                 size -= size % writebdy;
 544         if (size == 0) {
 545                 if (!quiet && testcalls > simulatedopcount && !o_direct)
 546                         prt("skipping zero size write\n");
 547                 log4(OP_SKIPPED, OP_WRITE, offset, size);
 548                 return;
 549         }
 550
 551         log4(OP_WRITE, offset, size, file_size);
 552
 553         gendata(original_buf, good_buf, offset, size);
 554         if (file_size < offset + size) {
 555                 if (file_size < offset)
 556                         bzero(good_buf + file_size, offset - file_size);
 557                 file_size = offset + size;
 558                 if (lite) {
 559                         warn("Lite file size bug in fsx!");
 560                         report_failure(149);
 561                 }
 562         }
 563
 564         if (testcalls <= simulatedopcount)
 565                 return;
 566
 567         if (!quiet &&
 568                 ((progressinterval && testcalls % progressinterval == 0) ||
 569                        (debug &&
 570                        (monitorstart == -1 ||
 571                         (offset + size > monitorstart &&
 572                         (monitorend == -1 || offset <= monitorend))))))
 573                 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 574                     offset, offset + size - 1, size);
 575         ret = lseek(fd, (off_t)offset, SEEK_SET);
 576         if (ret == (off_t)-1) {
 577                 prterr("dowrite: lseek");
 578                 report_failure(150);
 579         }
 580         iret = fsxwrite(fd, good_buf + offset, size, offset);
 581         if (iret != size) {
 582                 if (iret == -1)
 583                         prterr("dowrite: write");
 584                 else
 585                         prt("short write: 0x%x bytes instead of 0x%x\n",
 586                             iret, size);
 587                 report_failure(151);
 588         }
 589         if (do_fsync) {
 590                 if (fsync(fd)) {
 591                         prt("fsync() failed: %s\n", strerror(errno));
 592                         report_failure(152);
 593                 }
 594         }
 595 }
 596
 597
 598 void
 599 domapwrite(unsigned offset, unsigned size)
 600 {
 601         unsigned pg_offset;
 602         unsigned map_size;
 603         off_t    cur_filesize;
 604         char    *p;
 605
 606         offset -= offset % writebdy;
 607         if (size == 0) {
 608                 if (!quiet && testcalls > simulatedopcount)
 609                         prt("skipping zero size write\n");
 610                 log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
 611                 return;
 612         }
 613         cur_filesize = file_size;
 614
 615         log4(OP_MAPWRITE, offset, size, 0);
 616
 617         gendata(original_buf, good_buf, offset, size);
 618         if (file_size < offset + size) {
 619                 if (file_size < offset)
 620                         bzero(good_buf + file_size, offset - file_size);
 621                 file_size = offset + size;
 622                 if (lite) {
 623                         warn("Lite file size bug in fsx!");
 624                         report_failure(200);
 625                 }
 626         }
 627
 628         if (testcalls <= simulatedopcount)
 629                 return;
 630
 631         if (!quiet &&
 632                 ((progressinterval && testcalls % progressinterval == 0) ||
 633                        (debug &&
 634                        (monitorstart == -1 ||
 635                         (offset + size > monitorstart &&
 636                         (monitorend == -1 || offset <= monitorend))))))
 637                 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 638                     offset, offset + size - 1, size);
 639
 640         if (file_size > cur_filesize) {
 641                 if (ftruncate(fd, file_size) == -1) {
 642                         prterr("domapwrite: ftruncate");
 643                         exit(201);
 644                 }
 645         }
 646         pg_offset = offset & PAGE_MASK;
 647         map_size  = pg_offset + size;
 648
 649         if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
 650                               MAP_FILE | MAP_SHARED, fd,
 651                               (off_t)(offset - pg_offset))) == (char *)-1) {
 652                 prterr("domapwrite: mmap");
 653                 report_failure(202);
 654         }
 655         memcpy(p + pg_offset, good_buf + offset, size);
 656         if (msync(p, map_size, 0) != 0) {
 657                 prterr("domapwrite: msync");
 658                 report_failure(203);
 659         }
 660         if (munmap(p, map_size) != 0) {
 661                 prterr("domapwrite: munmap");
 662                 report_failure(204);
 663         }
 664 }
 665
 666
 667 void
 668 dotruncate(unsigned size)
 669 {
 670         int oldsize = file_size;
 671
 672         size -= size % truncbdy;
 673         if (size > biggest) {
 674                 biggest = size;
 675                 if (!quiet && testcalls > simulatedopcount)
 676                         prt("truncating to largest ever: 0x%x\n", size);
 677         }
 678
 679         log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
 680
 681         if (size > file_size)
 682                 bzero(good_buf + file_size, size - file_size);
 683         file_size = size;
 684
 685         if (testcalls <= simulatedopcount)
 686                 return;
 687
 688         if ((progressinterval && testcalls % progressinterval == 0) ||
 689             (debug && (monitorstart == -1 || monitorend == -1 ||
 690                       size <= monitorend)))
 691                 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
 692         if (ftruncate(fd, (off_t)size) == -1) {
 693                 prt("ftruncate1: %x\n", size);
 694                 prterr("dotruncate: ftruncate");
 695                 report_failure(160);
 696         }
 697 }
 698
 699
 700 void
 701 writefileimage()
 702 {
 703         ssize_t iret;
 704
 705         if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
 706                 prterr("writefileimage: lseek");
 707                 report_failure(171);
 708         }
 709         iret = write(fd, good_buf, file_size);
 710         if ((off_t)iret != file_size) {
 711                 if (iret == -1)
 712                         prterr("writefileimage: write");
 713                 else
 714                         prt("short write: 0x%x bytes instead of 0x%qx\n",
 715                             iret, (unsigned long long)file_size);
 716                 report_failure(172);
 717         }
 718         if (lite ? 0 : ftruncate(fd, file_size) == -1) {
 719                 prt("ftruncate2: %qx\n", (unsigned long long)file_size);
 720                 prterr("writefileimage: ftruncate");
 721                 report_failure(173);
 722         }
 723 }
 724
 725
 726 void
 727 docloseopen(void)
 728 {
 729         if (testcalls <= simulatedopcount)
 730                 return;
 731
 732         if (debug)
 733                 prt("%lu close/open\n", testcalls);
 734         if (close(fd)) {
 735                 prterr("docloseopen: close");
 736                 report_failure(180);
 737         }
 738         fd = open(fname, O_RDWR|o_direct, 0);
 739         if (fd < 0) {
 740                 prterr("docloseopen: open");
 741                 report_failure(181);
 742         }
 743 }
 744
 745
 746 void
 747 test(void)
 748 {
 749         unsigned long   offset;
 750         unsigned long   size = maxoplen;
 751         unsigned long   rv = random();
 752         unsigned long   op = rv % (3 + !lite + mapped_writes);
 753
 754         /* turn off the map read if necessary */
 755
 756         if (op == 2 && !mapped_reads)
 757             op = 0;
 758
 759         if (simulatedopcount > 0 && testcalls == simulatedopcount)
 760                 writefileimage();
 761
 762         testcalls++;
 763
 764         if (closeprob)
 765                 closeopen = (rv >> 3) < (1 << 28) / closeprob;
 766
 767         if (debugstart > 0 && testcalls >= debugstart)
 768                 debug = 1;
 769
 770         if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
 771                 prt("%lu...\n", testcalls);
 772
 773         /*
 774          * READ:        op = 0
 775          * WRITE:       op = 1
 776          * MAPREAD:     op = 2
 777          * TRUNCATE:    op = 3
 778          * MAPWRITE:    op = 3 or 4
 779          */
 780         if (lite ? 0 : op == 3 && (style & 1) == 0) /* vanilla truncate? */
 781                 dotruncate(random() % maxfilelen);
 782         else {
 783                 if (randomoplen)
 784                         size = random() % (maxoplen+1);
 785                 if (lite ? 0 : op == 3)
 786                         dotruncate(size);
 787                 else {
 788                         offset = random();
 789                         if (op == 1 || op == (lite ? 3 : 4)) {
 790                                 offset %= maxfilelen;
 791                                 if (offset + size > maxfilelen)
 792                                         size = maxfilelen - offset;
 793                                 if (op != 1)
 794                                         domapwrite(offset, size);
 795                                 else
 796                                         dowrite(offset, size);
 797                         } else {
 798                                 if (file_size)
 799                                         offset %= file_size;
 800                                 else
 801                                         offset = 0;
 802                                 if (offset + size > file_size)
 803                                         size = file_size - offset;
 804                                 if (op != 0)
 805                                         domapread(offset, size);
 806                                 else
 807                                         doread(offset, size);
 808                         }
 809                 }
 810         }
 811         if (sizechecks && testcalls > simulatedopcount)
 812                 check_size();
 813         if (closeopen)
 814                 docloseopen();
 815 }
 816
 817
 818 void
 819 cleanup(sig)
 820         int     sig;
 821 {
 822         if (sig)
 823                 prt("signal %d\n", sig);
 824         prt("testcalls = %lu\n", testcalls);
 825         exit(sig);
 826 }
 827
 828
 829 void
 830 usage(void)
 831 {
 832         fprintf(stdout, "usage: %s",
 833                 "fsx [-dnqxALOWZ] [-b opnum] [-c Prob] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] 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 (default 0:infinity)\n\
 839         -n: no verifications of file size\n\
 840         -o oplen: the upper bound on operation size (default 65536)\n\
 841         -p progressinterval: debug output at specified operation interval\n\
 842         -q: quieter operation\n\
 843         -r readbdy: 4096 would make reads page aligned (default 1)\n\
 844         -s style: 1 gives smaller truncates (default 0)\n\
 845         -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
 846         -w writebdy: 4096 would make writes page aligned (default 1)\n\
 847         -x: preallocate file space before starting, XFS only (default 0)\n"
 848 #ifdef AIO
 849         "-A: Use the AIO system calls\n"
 850 #endif
 851         "-D startingop: debug output starting at specified operation\n\
 852         -L: fsxLite - no file creations & no file size changes\n\
 853         -N numops: total # operations to do (default infinity)\n\
 854         -O: use oplen (see -o flag) for every op (default random)\n\
 855         -P: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
 856         -S seed: for random # generator (default 1) 0 gets timestamp\n\
 857         -W: mapped write operations DISabled\n\
 858         -R: read() system calls only (mapped reads disabled)\n\
 859         -Z: O_DIRECT (use -R, -W, -r and -w too)\n\
 860         fname: this filename is REQUIRED (no default)\n");
 861         exit(90);
 862 }
 863
 864
 865 int
 866 getnum(char *s, char **e)
 867 {
 868         int ret;
 869
 870         *e = (char *) 0;
 871         ret = strtol(s, e, 0);
 872         if (*e)
 873                 switch (**e) {
 874                 case 'b':
 875                 case 'B':
 876                         ret *= 512;
 877                         *e = *e + 1;
 878                         break;
 879                 case 'k':
 880                 case 'K':
 881                         ret *= 1024;
 882                         *e = *e + 1;
 883                         break;
 884                 case 'm':
 885                 case 'M':
 886                         ret *= 1024*1024;
 887                         *e = *e + 1;
 888                         break;
 889                 case 'w':
 890                 case 'W':
 891                         ret *= 4;
 892                         *e = *e + 1;
 893                         break;
 894                 }
 895         return (ret);
 896 }
 897
 898 #ifdef AIO
 899
 900 #define QSZ     1024
 901 io_context_t    io_ctx;
 902 struct iocb     iocb;
 903
 904 int aio_setup()
 905 {
 906         int ret;
 907         ret = io_queue_init(QSZ, &io_ctx);
 908         if (ret != 0) {
 909                 fprintf(stderr, "aio_setup: io_queue_init failed: %s\n",
 910                         strerror(ret));
 911                 return(-1);
 912         }
 913         return(0);
 914 }
 915
 916 int
 917 __aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
 918 {
 919         struct io_event event;
 920         static struct timespec ts;
 921         struct iocb *iocbs[] = { &iocb };
 922         int ret;
 923
 924         if (rw == READ) {
 925                 io_prep_pread(&iocb, fd, buf, len, offset);
 926         } else {
 927                 io_prep_pwrite(&iocb, fd, buf, len, offset);
 928         }
 929
 930         ts.tv_sec = 30;
 931         ts.tv_nsec = 0;
 932         ret = io_submit(io_ctx, 1, iocbs);
 933         if (ret != 1) {
 934                 fprintf(stderr, "errcode=%d\n", ret);
 935                 fprintf(stderr, "aio_rw: io_submit failed: %s\n",
 936                                 strerror(ret));
 937                 return(-1);
 938         }
 939
 940         ret = io_getevents(io_ctx, 1, 1, &event, &ts);
 941         if (ret != 1) {
 942                 fprintf(stderr, "errcode=%d\n", ret);
 943                 fprintf(stderr, "aio_rw: io_getevents failed: %s\n",
 944                                  strerror(ret));
 945                 return -1;
 946         }
 947         if (len != event.res) {
 948                 fprintf(stderr, "bad read length: %lu instead of %u\n",
 949                                 event.res, len);
 950         }
 951         return event.res;
 952 }
 953
 954 int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
 955 {
 956         int ret;
 957
 958         if (aio) {
 959                 ret = __aio_rw(rw, fd, buf, len, offset);
 960         } else {
 961                 if (rw == READ)
 962                         ret = read(fd, buf, len);
 963                 else
 964                         ret = write(fd, buf, len);
 965         }
 966         return ret;
 967 }
 968
 969 #endif
 970
 971 int
 972 main(int argc, char **argv)
 973 {
 974         int     i, style, ch;
 975         char    *endp;
 976         char goodfile[1024];
 977         char logfile[1024];
 978
 979         goodfile[0] = 0;
 980         logfile[0] = 0;
 981
 982         setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
 983
 984         while ((ch = getopt(argc, argv, "b:c:dl:m:no:p:qr:s:t:w:xAD:LN:OP:RS:WZ"))
 985                != EOF)
 986                 switch (ch) {
 987                 case 'b':
 988                         simulatedopcount = getnum(optarg, &endp);
 989                         if (!quiet)
 990                                 fprintf(stdout, "Will begin at operation %ld\n",
 991                                         simulatedopcount);
 992                         if (simulatedopcount == 0)
 993                                 usage();
 994                         simulatedopcount -= 1;
 995                         break;
 996                 case 'c':
 997                         closeprob = getnum(optarg, &endp);
 998                         if (!quiet)
 999                                 fprintf(stdout,
1000                                         "Chance of close/open is 1 in %d\n",
1001                                         closeprob);
1002                         if (closeprob <= 0)
1003                                 usage();
1004                         break;
1005                 case 'd':
1006                         debug = 1;
1007                         break;
1008                 case 'f':
1009                         do_fsync = 1;
1010                         break;
1011                 case 'l':
1012                         maxfilelen = getnum(optarg, &endp);
1013                         if (maxfilelen <= 0)
1014                                 usage();
1015                         break;
1016                 case 'm':
1017                         monitorstart = getnum(optarg, &endp);
1018                         if (monitorstart < 0)
1019                                 usage();
1020                         if (!endp || *endp++ != ':')
1021                                 usage();
1022                         monitorend = getnum(endp, &endp);
1023                         if (monitorend < 0)
1024                                 usage();
1025                         if (monitorend == 0)
1026                                 monitorend = -1; /* aka infinity */
1027                         debug = 1;
1028                 case 'n':
1029                         sizechecks = 0;
1030                         break;
1031                 case 'o':
1032                         maxoplen = getnum(optarg, &endp);
1033                         if (maxoplen <= 0)
1034                                 usage();
1035                         break;
1036                 case 'p':
1037                         progressinterval = getnum(optarg, &endp);
1038                         if (progressinterval == 0)
1039                                 usage();
1040                         break;
1041                 case 'q':
1042                         quiet = 1;
1043                         break;
1044                 case 'r':
1045                         readbdy = getnum(optarg, &endp);
1046                         if (readbdy <= 0)
1047                                 usage();
1048                         break;
1049                 case 's':
1050                         style = getnum(optarg, &endp);
1051                         if (style < 0 || style > 1)
1052                                 usage();
1053                         break;
1054                 case 't':
1055                         truncbdy = getnum(optarg, &endp);
1056                         if (truncbdy <= 0)
1057                                 usage();
1058                         break;
1059                 case 'w':
1060                         writebdy = getnum(optarg, &endp);
1061                         if (writebdy <= 0)
1062                                 usage();
1063                         break;
1064                 case 'x':
1065                         prealloc = 1;
1066                         break;
1067                 case 'A':
1068                         aio = 1;
1069                         break;
1070                 case 'D':
1071                         debugstart = getnum(optarg, &endp);
1072                         if (debugstart < 1)
1073                                 usage();
1074                         break;
1075                 case 'L':
1076                         lite = 1;
1077                         break;
1078                 case 'N':
1079                         numops = getnum(optarg, &endp);
1080                         if (numops < 0)
1081                                 usage();
1082                         break;
1083                 case 'O':
1084                         randomoplen = 0;
1085                         break;
1086                 case 'P':
1087                         strncpy(goodfile, optarg, sizeof(goodfile));
1088                         strcat(goodfile, "/");
1089                         strncpy(logfile, optarg, sizeof(logfile));
1090                         strcat(logfile, "/");
1091                         break;
1092                 case 'R':
1093                         mapped_reads = 0;
1094                         break;
1095                 case 'S':
1096                         seed = getnum(optarg, &endp);
1097                         if (seed == 0)
1098                                 seed = time(0) % 10000;
1099                         if (!quiet)
1100                                 fprintf(stdout, "Seed set to %d\n", seed);
1101                         if (seed < 0)
1102                                 usage();
1103                         break;
1104                 case 'W':
1105                         mapped_writes = 0;
1106                         if (!quiet)
1107                                 fprintf(stdout, "mapped writes DISABLED\n");
1108                         break;
1109                 case 'Z':
1110                         o_direct = O_DIRECT;
1111                         break;
1112                 default:
1113                         usage();
1114                         /* NOTREACHED */
1115                 }
1116         argc -= optind;
1117         argv += optind;
1118         if (argc != 1)
1119                 usage();
1120         fname = argv[0];
1121
1122         signal(SIGHUP,  cleanup);
1123         signal(SIGINT,  cleanup);
1124         signal(SIGPIPE, cleanup);
1125         signal(SIGALRM, cleanup);
1126         signal(SIGTERM, cleanup);
1127         signal(SIGXCPU, cleanup);
1128         signal(SIGXFSZ, cleanup);
1129         signal(SIGVTALRM,       cleanup);
1130         signal(SIGUSR1, cleanup);
1131         signal(SIGUSR2, cleanup);
1132
1133         initstate(seed, state, 256);
1134         setstate(state);
1135         fd = open(fname,
1136                 O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC)|o_direct, 0666);
1137         if (fd < 0) {
1138                 prterr(fname);
1139                 exit(91);
1140         }
1141 #ifdef XFS
1142         if (prealloc) {
1143                 xfs_flock64_t   resv = { 0 };
1144 #ifdef HAVE_XFS_PLATFORM_DEFS_H
1145                 if (!platform_test_xfs_fd(fd)) {
1146                         prterr(fname);
1147                         fprintf(stderr, "main: cannot prealloc, non XFS\n");
1148                         exit(96);
1149                 }
1150 #endif
1151                 resv.l_len = maxfilelen;
1152                 if ((xfsctl(fname, fd, XFS_IOC_RESVSP, &resv)) < 0) {
1153                         prterr(fname);
1154                         exit(97);
1155                 }
1156         }
1157 #endif
1158         strncat(goodfile, fname, 256);
1159         strcat (goodfile, ".fsxgood");
1160         fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1161         if (fsxgoodfd < 0) {
1162                 prterr(goodfile);
1163                 exit(92);
1164         }
1165         strncat(logfile, fname, 256);
1166         strcat (logfile, ".fsxlog");
1167         fsxlogf = fopen(logfile, "w");
1168         if (fsxlogf == NULL) {
1169                 prterr(logfile);
1170                 exit(93);
1171         }
1172
1173 #ifdef AIO
1174         if (aio)
1175                 aio_setup();
1176 #endif
1177
1178         if (lite) {
1179                 off_t ret;
1180                 file_size = maxfilelen = lseek(fd, (off_t)0, L_XTND);
1181                 if (file_size == (off_t)-1) {
1182                         prterr(fname);
1183                         warn("main: lseek eof");
1184                         exit(94);
1185                 }
1186                 ret = lseek(fd, (off_t)0, SEEK_SET);
1187                 if (ret == (off_t)-1) {
1188                         prterr(fname);
1189                         warn("main: lseek 0");
1190                         exit(95);
1191                 }
1192         }
1193         original_buf = (char *) malloc(maxfilelen);
1194         for (i = 0; i < maxfilelen; i++)
1195                 original_buf[i] = random() % 256;
1196         good_buf = (char *) malloc(maxfilelen + writebdy);
1197         good_buf = round_up(good_buf, writebdy, 0);
1198         bzero(good_buf, maxfilelen);
1199         temp_buf = (char *) malloc(maxoplen + readbdy);
1200         temp_buf = round_up(temp_buf, readbdy, 0);
1201         bzero(temp_buf, maxoplen);
1202         if (lite) {     /* zero entire existing file */
1203                 ssize_t written;
1204
1205                 written = write(fd, good_buf, (size_t)maxfilelen);
1206                 if (written != maxfilelen) {
1207                         if (written == -1) {
1208                                 prterr(fname);
1209                                 warn("main: error on write");
1210                         } else
1211                                 warn("main: short write, 0x%x bytes instead "
1212                                         "of 0x%lx\n",
1213                                         (unsigned)written,
1214                                         maxfilelen);
1215                         exit(98);
1216                 }
1217         } else
1218                 check_trunc_hack();
1219
1220         while (numops == -1 || numops--)
1221                 test();
1222
1223         if (close(fd)) {
1224                 prterr("close");
1225                 report_failure(99);
1226         }
1227         prt("All operations completed A-OK!\n");
1228
1229         exit(0);
1230         return 0;
1231 }