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  *      Checks for mmap last-page zero fill.
  14  */
  15
  16 #include "global.h"
  17
  18 #include <limits.h>
  19 #include <time.h>
  20 #include <strings.h>
  21 #include <sys/file.h>
  22 #include <sys/mman.h>
  23 #ifdef HAVE_ERR_H
  24 #include <err.h>
  25 #endif
  26 #include <signal.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <stdarg.h>
  31 #include <errno.h>
  32 #ifdef AIO
  33 #include <libaio.h>
  34 #endif
  35 #ifdef FALLOCATE
  36 #include <linux/falloc.h>
  37 #endif
  38
  39 #ifndef MAP_FILE
  40 # define MAP_FILE 0
  41 #endif
  42
  43 #define NUMPRINTCOLUMNS 32      /* # columns of data to print on each line */
  44
  45 /*
  46  *      A log entry is an operation and a bunch of arguments.
  47  */
  48
  49 struct log_entry {
  50         int     operation;
  51         int     args[3];
  52 };
  53
  54 #define LOGSIZE 1000
  55
  56 struct log_entry        oplog[LOGSIZE]; /* the log */
  57 int                     logptr = 0;     /* current position in log */
  58 int                     logcount = 0;   /* total ops */
  59
  60 /*
  61  *      Define operations
  62  */
  63
  64 #define OP_READ         1
  65 #define OP_WRITE        2
  66 #define OP_TRUNCATE     3
  67 #define OP_CLOSEOPEN    4
  68 #define OP_MAPREAD      5
  69 #define OP_MAPWRITE     6
  70 #define OP_SKIPPED      7
  71 #define OP_FALLOCATE    8
  72 #define OP_PUNCH_HOLE   9
  73
  74 #undef PAGE_SIZE
  75 #define PAGE_SIZE       getpagesize()
  76 #undef PAGE_MASK
  77 #define PAGE_MASK       (PAGE_SIZE - 1)
  78
  79 char    *original_buf;                  /* a pointer to the original data */
  80 char    *good_buf;                      /* a pointer to the correct data */
  81 char    *temp_buf;                      /* a pointer to the current data */
  82 char    *fname;                         /* name of our test file */
  83 int     fd;                             /* fd for our test file */
  84
  85 off_t           file_size = 0;
  86 off_t           biggest = 0;
  87 char            state[256];
  88 unsigned long   testcalls = 0;          /* calls to function "test" */
  89
  90 unsigned long   simulatedopcount = 0;   /* -b flag */
  91 int     closeprob = 0;                  /* -c flag */
  92 int     debug = 0;                      /* -d flag */
  93 unsigned long   debugstart = 0;         /* -D flag */
  94 int     flush = 0;                      /* -f flag */
  95 int     do_fsync = 0;                   /* -y flag */
  96 unsigned long   maxfilelen = 256 * 1024;        /* -l flag */
  97 int     sizechecks = 1;                 /* -n flag disables them */
  98 int     maxoplen = 64 * 1024;           /* -o flag */
  99 int     quiet = 0;                      /* -q flag */
 100 unsigned long progressinterval = 0;     /* -p flag */
 101 int     readbdy = 1;                    /* -r flag */
 102 int     style = 0;                      /* -s flag */
 103 int     prealloc = 0;                   /* -x flag */
 104 int     truncbdy = 1;                   /* -t flag */
 105 int     writebdy = 1;                   /* -w flag */
 106 long    monitorstart = -1;              /* -m flag */
 107 long    monitorend = -1;                /* -m flag */
 108 int     lite = 0;                       /* -L flag */
 109 long    numops = -1;                    /* -N flag */
 110 int     randomoplen = 1;                /* -O flag disables it */
 111 int     seed = 1;                       /* -S flag */
 112 int     mapped_writes = 1;              /* -W flag disables */
 113 int     fallocate_calls = 1;            /* -F flag disables */
 114 int     punch_hole_calls = 1;           /* -H flag disables */
 115 int     mapped_reads = 1;               /* -R flag disables it */
 116 int     fsxgoodfd = 0;
 117 int     o_direct;                       /* -Z */
 118 int     aio = 0;
 119
 120 int page_size;
 121 int page_mask;
 122 int mmap_mask;
 123 #ifdef AIO
 124 int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset);
 125 #define READ 0
 126 #define WRITE 1
 127 #define fsxread(a,b,c,d)        aio_rw(READ, a,b,c,d)
 128 #define fsxwrite(a,b,c,d)       aio_rw(WRITE, a,b,c,d)
 129 #else
 130 #define fsxread(a,b,c,d)        read(a,b,c)
 131 #define fsxwrite(a,b,c,d)       write(a,b,c)
 132 #endif
 133
 134 FILE *  fsxlogf = NULL;
 135 int badoff = -1;
 136 int closeopen = 0;
 137
 138 static void *round_up(void *ptr, unsigned long align, unsigned long offset)
 139 {
 140         unsigned long ret = (unsigned long)ptr;
 141
 142         ret = ((ret + align - 1) & ~(align - 1));
 143         ret += offset;
 144         return (void *)ret;
 145 }
 146
 147 void
 148 vwarnc(int code, const char *fmt, va_list ap) {
 149   fprintf(stderr, "fsx: ");
 150   if (fmt != NULL) {
 151         vfprintf(stderr, fmt, ap);
 152         fprintf(stderr, ": ");
 153   }
 154   fprintf(stderr, "%s\n", strerror(code));
 155 }
 156
 157 void
 158 warn(const char * fmt, ...)  {
 159         va_list ap;
 160         va_start(ap, fmt);
 161         vwarnc(errno, fmt, ap);
 162         va_end(ap);
 163 }
 164
 165 #define BUF_SIZE 1024
 166
 167 void
 168 prt(char *fmt, ...)
 169 {
 170         va_list args;
 171         char buffer[BUF_SIZE];
 172
 173         va_start(args, fmt);
 174         vsnprintf(buffer, BUF_SIZE, fmt, args);
 175         va_end(args);
 176         fprintf(stdout, buffer);
 177         if (fsxlogf)
 178                 fprintf(fsxlogf, buffer);
 179 }
 180
 181 void
 182 prterr(char *prefix)
 183 {
 184         prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
 185 }
 186
 187
 188 void
 189 log4(int operation, int arg0, int arg1, int arg2)
 190 {
 191         struct log_entry *le;
 192
 193         le = &oplog[logptr];
 194         le->operation = operation;
 195         if (closeopen)
 196                 le->operation = ~ le->operation;
 197         le->args[0] = arg0;
 198         le->args[1] = arg1;
 199         le->args[2] = arg2;
 200         logptr++;
 201         logcount++;
 202         if (logptr >= LOGSIZE)
 203                 logptr = 0;
 204 }
 205
 206
 207 void
 208 logdump(void)
 209 {
 210         int     i, count, down;
 211         struct log_entry        *lp;
 212         char *falloc_type[3] = {"PAST_EOF", "EXTENDING", "INTERIOR"};
 213
 214         prt("LOG DUMP (%d total operations):\n", logcount);
 215         if (logcount < LOGSIZE) {
 216                 i = 0;
 217                 count = logcount;
 218         } else {
 219                 i = logptr;
 220                 count = LOGSIZE;
 221         }
 222         for ( ; count > 0; count--) {
 223                 int opnum;
 224
 225                 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
 226                 prt("%d(%d mod 256): ", opnum, opnum%256);
 227                 lp = &oplog[i];
 228                 if ((closeopen = lp->operation < 0))
 229                         lp->operation = ~ lp->operation;
 230
 231                 switch (lp->operation) {
 232                 case OP_MAPREAD:
 233                         prt("MAPREAD\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] && badoff <
 237                                                      lp->args[0] + lp->args[1])
 238                                 prt("\t***RRRR***");
 239                         break;
 240                 case OP_MAPWRITE:
 241                         prt("MAPWRITE 0x%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 (badoff >= lp->args[0] && badoff <
 245                                                      lp->args[0] + lp->args[1])
 246                                 prt("\t******WWWW");
 247                         break;
 248                 case OP_READ:
 249                         prt("READ\t0x%x thru 0x%x\t(0x%x bytes)",
 250                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 251                             lp->args[1]);
 252                         if (badoff >= lp->args[0] &&
 253                             badoff < lp->args[0] + lp->args[1])
 254                                 prt("\t***RRRR***");
 255                         break;
 256                 case OP_WRITE:
 257                         prt("WRITE\t0x%x thru 0x%x\t(0x%x bytes)",
 258                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 259                             lp->args[1]);
 260                         if (lp->args[0] > lp->args[2])
 261                                 prt(" HOLE");
 262                         else if (lp->args[0] + lp->args[1] > lp->args[2])
 263                                 prt(" EXTEND");
 264                         if ((badoff >= lp->args[0] || badoff >=lp->args[2]) &&
 265                             badoff < lp->args[0] + lp->args[1])
 266                                 prt("\t***WWWW");
 267                         break;
 268                 case OP_TRUNCATE:
 269                         down = lp->args[0] < lp->args[1];
 270                         prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
 271                             down ? "DOWN" : "UP", lp->args[1], lp->args[0]);
 272                         if (badoff >= lp->args[!down] &&
 273                             badoff < lp->args[!!down])
 274                                 prt("\t******WWWW");
 275                         break;
 276                 case OP_FALLOCATE:
 277                         /* 0: offset 1: length 2: where alloced */
 278                         prt("FALLOCATE %s\tfrom 0x%x to 0x%x",
 279                             falloc_type[lp->args[2]], lp->args[0], lp->args[0] + lp->args[1]);
 280                         if (badoff >= lp->args[0] &&
 281                             badoff < lp->args[0] + lp->args[1])
 282                                 prt("\t******FFFF");
 283                         break;
 284                 case OP_PUNCH_HOLE:
 285                         prt("PUNCH HOLE\t0x%x thru 0x%x\t(0x%x bytes)",
 286                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 287                             lp->args[1]);
 288                         if (badoff >= lp->args[0] && badoff <
 289                                                      lp->args[0] + lp->args[1])
 290                                 prt("\t******PPPP");
 291                         break;
 292                 case OP_SKIPPED:
 293                         prt("SKIPPED (no operation)");
 294                         break;
 295                 default:
 296                         prt("BOGUS LOG ENTRY (operation code = %d)!",
 297                             lp->operation);
 298                 }
 299                 if (closeopen)
 300                         prt("\n\t\tCLOSE/OPEN");
 301                 prt("\n");
 302                 i++;
 303                 if (i == LOGSIZE)
 304                         i = 0;
 305         }
 306 }
 307
 308
 309 void
 310 save_buffer(char *buffer, off_t bufferlength, int fd)
 311 {
 312         off_t ret;
 313         ssize_t byteswritten;
 314
 315         if (fd <= 0 || bufferlength == 0)
 316                 return;
 317
 318         if (bufferlength > SSIZE_MAX) {
 319                 prt("fsx flaw: overflow in save_buffer\n");
 320                 exit(67);
 321         }
 322         if (lite) {
 323                 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 324                 if (size_by_seek == (off_t)-1)
 325                         prterr("save_buffer: lseek eof");
 326                 else if (bufferlength > size_by_seek) {
 327                         warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
 328                              (unsigned long long)bufferlength);
 329                         bufferlength = size_by_seek;
 330                 }
 331         }
 332
 333         ret = lseek(fd, (off_t)0, SEEK_SET);
 334         if (ret == (off_t)-1)
 335                 prterr("save_buffer: lseek 0");
 336
 337         byteswritten = write(fd, buffer, (size_t)bufferlength);
 338         if (byteswritten != bufferlength) {
 339                 if (byteswritten == -1)
 340                         prterr("save_buffer write");
 341                 else
 342                         warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
 343                              (unsigned)byteswritten,
 344                              (unsigned long long)bufferlength);
 345         }
 346 }
 347
 348
 349 void
 350 report_failure(int status)
 351 {
 352         logdump();
 353
 354         if (fsxgoodfd) {
 355                 if (good_buf) {
 356                         save_buffer(good_buf, file_size, fsxgoodfd);
 357                         prt("Correct content saved for comparison\n");
 358                         prt("(maybe hexdump \"%s\" vs \"%s.fsxgood\")\n",
 359                             fname, fname);
 360                 }
 361                 close(fsxgoodfd);
 362         }
 363         exit(status);
 364 }
 365
 366
 367 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
 368                                         *(((unsigned char *)(cp)) + 1)))
 369
 370 void
 371 check_buffers(unsigned offset, unsigned size)
 372 {
 373         unsigned char c, t;
 374         unsigned i = 0;
 375         unsigned n = 0;
 376         unsigned op = 0;
 377         unsigned bad = 0;
 378
 379         if (memcmp(good_buf + offset, temp_buf, size) != 0) {
 380                 prt("READ BAD DATA: offset = 0x%x, size = 0x%x, fname = %s\n",
 381                     offset, size, fname);
 382                 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
 383                 while (size > 0) {
 384                         c = good_buf[offset];
 385                         t = temp_buf[i];
 386                         if (c != t) {
 387                                 if (n < 16) {
 388                                         bad = short_at(&temp_buf[i]);
 389                                         prt("0x%5x\t0x%04x\t0x%04x", offset,
 390                                             short_at(&good_buf[offset]), bad);
 391                                         op = temp_buf[offset & 1 ? i+1 : i];
 392                                         prt("\t0x%5x\n", n);
 393                                         if (op)
 394                                                 prt("operation# (mod 256) for "
 395                                                   "the bad data may be %u\n",
 396                                                 ((unsigned)op & 0xff));
 397                                         else
 398                                                 prt("operation# (mod 256) for "
 399                                                   "the bad data unknown, check"
 400                                                   " HOLE and EXTEND ops\n");
 401                                 }
 402                                 n++;
 403                                 badoff = offset;
 404                         }
 405                         offset++;
 406                         i++;
 407                         size--;
 408                 }
 409                 report_failure(110);
 410         }
 411 }
 412
 413
 414 void
 415 check_size(void)
 416 {
 417         struct stat     statbuf;
 418         off_t   size_by_seek;
 419
 420         if (fstat(fd, &statbuf)) {
 421                 prterr("check_size: fstat");
 422                 statbuf.st_size = -1;
 423         }
 424         size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 425         if (file_size != statbuf.st_size || file_size != size_by_seek) {
 426                 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
 427                     (unsigned long long)file_size,
 428                     (unsigned long long)statbuf.st_size,
 429                     (unsigned long long)size_by_seek);
 430                 report_failure(120);
 431         }
 432 }
 433
 434
 435 void
 436 check_trunc_hack(void)
 437 {
 438         struct stat statbuf;
 439
 440         ftruncate(fd, (off_t)0);
 441         ftruncate(fd, (off_t)100000);
 442         fstat(fd, &statbuf);
 443         if (statbuf.st_size != (off_t)100000) {
 444                 prt("no extend on truncate! not posix!\n");
 445                 exit(130);
 446         }
 447         ftruncate(fd, 0);
 448 }
 449
 450 void
 451 doflush(unsigned offset, unsigned size)
 452 {
 453         unsigned pg_offset;
 454         unsigned map_size;
 455         char    *p;
 456
 457         if (o_direct == O_DIRECT)
 458                 return;
 459
 460         pg_offset = offset & mmap_mask;
 461         map_size  = pg_offset + size;
 462
 463         if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
 464                               MAP_FILE | MAP_SHARED, fd,
 465                               (off_t)(offset - pg_offset))) == (char *)-1) {
 466                 prterr("doflush: mmap");
 467                 report_failure(202);
 468         }
 469         if (msync(p, map_size, MS_INVALIDATE) != 0) {
 470                 prterr("doflush: msync");
 471                 report_failure(203);
 472         }
 473         if (munmap(p, map_size) != 0) {
 474                 prterr("doflush: munmap");
 475                 report_failure(204);
 476         }
 477 }
 478
 479 void
 480 doread(unsigned offset, unsigned size)
 481 {
 482         off_t ret;
 483         unsigned iret;
 484
 485         offset -= offset % readbdy;
 486         if (o_direct)
 487                 size -= size % readbdy;
 488         if (size == 0) {
 489                 if (!quiet && testcalls > simulatedopcount && !o_direct)
 490                         prt("skipping zero size read\n");
 491                 log4(OP_SKIPPED, OP_READ, offset, size);
 492                 return;
 493         }
 494         if (size + offset > file_size) {
 495                 if (!quiet && testcalls > simulatedopcount)
 496                         prt("skipping seek/read past end of file\n");
 497                 log4(OP_SKIPPED, OP_READ, offset, size);
 498                 return;
 499         }
 500
 501         log4(OP_READ, offset, size, 0);
 502
 503         if (testcalls <= simulatedopcount)
 504                 return;
 505
 506         if (!quiet &&
 507                 ((progressinterval && testcalls % progressinterval == 0)  ||
 508                 (debug &&
 509                        (monitorstart == -1 ||
 510                         (offset + size > monitorstart &&
 511                         (monitorend == -1 || offset <= monitorend))))))
 512                 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 513                     offset, offset + size - 1, size);
 514         ret = lseek(fd, (off_t)offset, SEEK_SET);
 515         if (ret == (off_t)-1) {
 516                 prterr("doread: lseek");
 517                 report_failure(140);
 518         }
 519         iret = fsxread(fd, temp_buf, size, offset);
 520         if (iret != size) {
 521                 if (iret == -1)
 522                         prterr("doread: read");
 523                 else
 524                         prt("short read: 0x%x bytes instead of 0x%x\n",
 525                             iret, size);
 526                 report_failure(141);
 527         }
 528         check_buffers(offset, size);
 529 }
 530
 531
 532 void
 533 check_eofpage(char *s, unsigned offset, char *p, int size)
 534 {
 535         unsigned long last_page, should_be_zero;
 536
 537         if (offset + size <= (file_size & ~page_mask))
 538                 return;
 539         /*
 540          * we landed in the last page of the file
 541          * test to make sure the VM system provided 0's
 542          * beyond the true end of the file mapping
 543          * (as required by mmap def in 1996 posix 1003.1)
 544          */
 545         last_page = ((unsigned long)p + (offset & page_mask) + size) & ~page_mask;
 546
 547         for (should_be_zero = last_page + (file_size & page_mask);
 548              should_be_zero < last_page + page_size;
 549              should_be_zero++)
 550                 if (*(char *)should_be_zero) {
 551                         prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n",
 552                             s, file_size - 1, should_be_zero & page_mask,
 553                             short_at(should_be_zero));
 554                         report_failure(205);
 555                 }
 556 }
 557
 558
 559 void
 560 domapread(unsigned offset, unsigned size)
 561 {
 562         unsigned pg_offset;
 563         unsigned map_size;
 564         char    *p;
 565
 566         offset -= offset % readbdy;
 567         if (size == 0) {
 568                 if (!quiet && testcalls > simulatedopcount)
 569                         prt("skipping zero size read\n");
 570                 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
 571                 return;
 572         }
 573         if (size + offset > file_size) {
 574                 if (!quiet && testcalls > simulatedopcount)
 575                         prt("skipping seek/read past end of file\n");
 576                 log4(OP_SKIPPED, OP_MAPREAD, offset, size);
 577                 return;
 578         }
 579
 580         log4(OP_MAPREAD, offset, size, 0);
 581
 582         if (testcalls <= simulatedopcount)
 583                 return;
 584
 585         if (!quiet &&
 586                 ((progressinterval && testcalls % progressinterval == 0) ||
 587                        (debug &&
 588                        (monitorstart == -1 ||
 589                         (offset + size > monitorstart &&
 590                         (monitorend == -1 || offset <= monitorend))))))
 591                 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 592                     offset, offset + size - 1, size);
 593
 594         pg_offset = offset & PAGE_MASK;
 595         map_size  = pg_offset + size;
 596
 597         if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_SHARED, fd,
 598                               (off_t)(offset - pg_offset))) == (char *)-1) {
 599                 prterr("domapread: mmap");
 600                 report_failure(190);
 601         }
 602         memcpy(temp_buf, p + pg_offset, size);
 603
 604         check_eofpage("Read", offset, p, size);
 605
 606         if (munmap(p, map_size) != 0) {
 607                 prterr("domapread: munmap");
 608                 report_failure(191);
 609         }
 610
 611         check_buffers(offset, size);
 612 }
 613
 614
 615 void
 616 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
 617 {
 618         while (size--) {
 619                 good_buf[offset] = testcalls % 256;
 620                 if (offset % 2)
 621                         good_buf[offset] += original_buf[offset];
 622                 offset++;
 623         }
 624 }
 625
 626
 627 void
 628 dowrite(unsigned offset, unsigned size)
 629 {
 630         off_t ret;
 631         unsigned iret;
 632
 633         offset -= offset % writebdy;
 634         if (o_direct)
 635                 size -= size % writebdy;
 636         if (size == 0) {
 637                 if (!quiet && testcalls > simulatedopcount && !o_direct)
 638                         prt("skipping zero size write\n");
 639                 log4(OP_SKIPPED, OP_WRITE, offset, size);
 640                 return;
 641         }
 642
 643         log4(OP_WRITE, offset, size, file_size);
 644
 645         gendata(original_buf, good_buf, offset, size);
 646         if (file_size < offset + size) {
 647                 if (file_size < offset)
 648                         memset(good_buf + file_size, '\0', offset - file_size);
 649                 file_size = offset + size;
 650                 if (lite) {
 651                         warn("Lite file size bug in fsx!");
 652                         report_failure(149);
 653                 }
 654         }
 655
 656         if (testcalls <= simulatedopcount)
 657                 return;
 658
 659         if (!quiet &&
 660                 ((progressinterval && testcalls % progressinterval == 0) ||
 661                        (debug &&
 662                        (monitorstart == -1 ||
 663                         (offset + size > monitorstart &&
 664                         (monitorend == -1 || offset <= monitorend))))))
 665                 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 666                     offset, offset + size - 1, size);
 667         ret = lseek(fd, (off_t)offset, SEEK_SET);
 668         if (ret == (off_t)-1) {
 669                 prterr("dowrite: lseek");
 670                 report_failure(150);
 671         }
 672         iret = fsxwrite(fd, good_buf + offset, size, offset);
 673         if (iret != size) {
 674                 if (iret == -1)
 675                         prterr("dowrite: write");
 676                 else
 677                         prt("short write: 0x%x bytes instead of 0x%x\n",
 678                             iret, size);
 679                 report_failure(151);
 680         }
 681         if (do_fsync) {
 682                 if (fsync(fd)) {
 683                         prt("fsync() failed: %s\n", strerror(errno));
 684                         report_failure(152);
 685                 }
 686         }
 687         if (flush) {
 688                 doflush(offset, size);
 689         }
 690 }
 691
 692
 693 void
 694 domapwrite(unsigned offset, unsigned size)
 695 {
 696         unsigned pg_offset;
 697         unsigned map_size;
 698         off_t    cur_filesize;
 699         char    *p;
 700
 701         offset -= offset % writebdy;
 702         if (size == 0) {
 703                 if (!quiet && testcalls > simulatedopcount)
 704                         prt("skipping zero size write\n");
 705                 log4(OP_SKIPPED, OP_MAPWRITE, offset, size);
 706                 return;
 707         }
 708         cur_filesize = file_size;
 709
 710         log4(OP_MAPWRITE, offset, size, 0);
 711
 712         gendata(original_buf, good_buf, offset, size);
 713         if (file_size < offset + size) {
 714                 if (file_size < offset)
 715                         memset(good_buf + file_size, '\0', offset - file_size);
 716                 file_size = offset + size;
 717                 if (lite) {
 718                         warn("Lite file size bug in fsx!");
 719                         report_failure(200);
 720                 }
 721         }
 722
 723         if (testcalls <= simulatedopcount)
 724                 return;
 725
 726         if (!quiet &&
 727                 ((progressinterval && testcalls % progressinterval == 0) ||
 728                        (debug &&
 729                        (monitorstart == -1 ||
 730                         (offset + size > monitorstart &&
 731                         (monitorend == -1 || offset <= monitorend))))))
 732                 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 733                     offset, offset + size - 1, size);
 734
 735         if (file_size > cur_filesize) {
 736                 if (ftruncate(fd, file_size) == -1) {
 737                         prterr("domapwrite: ftruncate");
 738                         exit(201);
 739                 }
 740         }
 741         pg_offset = offset & PAGE_MASK;
 742         map_size  = pg_offset + size;
 743
 744         if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
 745                               MAP_FILE | MAP_SHARED, fd,
 746                               (off_t)(offset - pg_offset))) == (char *)-1) {
 747                 prterr("domapwrite: mmap");
 748                 report_failure(202);
 749         }
 750         memcpy(p + pg_offset, good_buf + offset, size);
 751         if (msync(p, map_size, 0) != 0) {
 752                 prterr("domapwrite: msync");
 753                 report_failure(203);
 754         }
 755
 756         check_eofpage("Write", offset, p, size);
 757
 758         if (munmap(p, map_size) != 0) {
 759                 prterr("domapwrite: munmap");
 760                 report_failure(204);
 761         }
 762 }
 763
 764
 765 void
 766 dotruncate(unsigned size)
 767 {
 768         int oldsize = file_size;
 769
 770         size -= size % truncbdy;
 771         if (size > biggest) {
 772                 biggest = size;
 773                 if (!quiet && testcalls > simulatedopcount)
 774                         prt("truncating to largest ever: 0x%x\n", size);
 775         }
 776
 777         log4(OP_TRUNCATE, size, (unsigned)file_size, 0);
 778
 779         if (size > file_size)
 780                 memset(good_buf + file_size, '\0', size - file_size);
 781         file_size = size;
 782
 783         if (testcalls <= simulatedopcount)
 784                 return;
 785
 786         if ((progressinterval && testcalls % progressinterval == 0) ||
 787             (debug && (monitorstart == -1 || monitorend == -1 ||
 788                       size <= monitorend)))
 789                 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
 790         if (ftruncate(fd, (off_t)size) == -1) {
 791                 prt("ftruncate1: %x\n", size);
 792                 prterr("dotruncate: ftruncate");
 793                 report_failure(160);
 794         }
 795 }
 796
 797 #ifdef FALLOC_FL_PUNCH_HOLE
 798 void
 799 do_punch_hole(unsigned offset, unsigned length)
 800 {
 801         unsigned end_offset;
 802         int max_offset = 0;
 803         int max_len = 0;
 804         int mode = FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE;
 805
 806         if (length == 0) {
 807                 if (!quiet && testcalls > simulatedopcount)
 808                         prt("skipping zero length punch hole\n");
 809                         log4(OP_SKIPPED, OP_PUNCH_HOLE, offset, length);
 810                 return;
 811         }
 812
 813         if (file_size <= (loff_t)offset) {
 814                 if (!quiet && testcalls > simulatedopcount)
 815                         prt("skipping hole punch off the end of the file\n");
 816                         log4(OP_SKIPPED, OP_PUNCH_HOLE, offset, length);
 817                 return;
 818         }
 819
 820         end_offset = offset + length;
 821
 822         log4(OP_PUNCH_HOLE, offset, length, 0);
 823
 824         if (testcalls <= simulatedopcount)
 825                 return;
 826
 827         if ((progressinterval && testcalls % progressinterval == 0) ||
 828             (debug && (monitorstart == -1 || monitorend == -1 ||
 829                       end_offset <= monitorend))) {
 830                 prt("%lu punch\tfrom 0x%x to 0x%x, (0x%x bytes)\n", testcalls,
 831                         offset, offset+length, length);
 832         }
 833         if (fallocate(fd, mode, (loff_t)offset, (loff_t)length) == -1) {
 834                 prt("%punch hole: %x to %x\n", offset, length);
 835                 prterr("do_punch_hole: fallocate");
 836                 report_failure(161);
 837         }
 838
 839
 840         max_offset = offset < file_size ? offset : file_size;
 841         max_len = max_offset + length <= file_size ? length :
 842                         file_size - max_offset;
 843         memset(good_buf + max_offset, '\0', max_len);
 844 }
 845
 846 #else
 847 void
 848 do_punch_hole(unsigned offset, unsigned length)
 849 {
 850         return;
 851 }
 852 #endif
 853
 854 #ifdef FALLOCATE
 855 /* fallocate is basically a no-op unless extending, then a lot like a truncate */
 856 void
 857 do_preallocate(unsigned offset, unsigned length)
 858 {
 859         unsigned end_offset;
 860         int keep_size;
 861
 862         if (length == 0) {
 863                 if (!quiet && testcalls > simulatedopcount)
 864                         prt("skipping zero length fallocate\n");
 865                 log4(OP_SKIPPED, OP_FALLOCATE, offset, length);
 866                 return;
 867         }
 868
 869         keep_size = random() % 2;
 870
 871         end_offset = keep_size ? 0 : offset + length;
 872
 873         if (end_offset > biggest) {
 874                 biggest = end_offset;
 875                 if (!quiet && testcalls > simulatedopcount)
 876                         prt("fallocating to largest ever: 0x%x\n", end_offset);
 877         }
 878
 879         /*
 880          * last arg:
 881          *      1: allocate past EOF
 882          *      2: extending prealloc
 883          *      3: interior prealloc
 884          */
 885         log4(OP_FALLOCATE, offset, length, (end_offset > file_size) ? (keep_size ? 1 : 2) : 3);
 886
 887         if (end_offset > file_size) {
 888                 memset(good_buf + file_size, '\0', end_offset - file_size);
 889                 file_size = end_offset;
 890         }
 891
 892         if (testcalls <= simulatedopcount)
 893                 return;
 894
 895         if ((progressinterval && testcalls % progressinterval == 0) ||
 896             (debug && (monitorstart == -1 || monitorend == -1 ||
 897                       end_offset <= monitorend)))
 898                 prt("%lu falloc\tfrom 0x%x to 0x%x\n", testcalls, offset, length);
 899         if (fallocate(fd, keep_size ? FALLOC_FL_KEEP_SIZE : 0, (loff_t)offset, (loff_t)length) == -1) {
 900                 prt("fallocate: %x to %x\n", offset, length);
 901                 prterr("do_preallocate: fallocate");
 902                 report_failure(161);
 903         }
 904 }
 905 #else
 906 void
 907 do_preallocate(unsigned offset, unsigned length)
 908 {
 909         return;
 910 }
 911 #endif
 912
 913 void
 914 writefileimage()
 915 {
 916         ssize_t iret;
 917
 918         if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
 919                 prterr("writefileimage: lseek");
 920                 report_failure(171);
 921         }
 922         iret = write(fd, good_buf, file_size);
 923         if ((off_t)iret != file_size) {
 924                 if (iret == -1)
 925                         prterr("writefileimage: write");
 926                 else
 927                         prt("short write: 0x%x bytes instead of 0x%llx\n",
 928                             iret, (unsigned long long)file_size);
 929                 report_failure(172);
 930         }
 931         if (lite ? 0 : ftruncate(fd, file_size) == -1) {
 932                 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
 933                 prterr("writefileimage: ftruncate");
 934                 report_failure(173);
 935         }
 936 }
 937
 938
 939 void
 940 docloseopen(void)
 941 {
 942         if (testcalls <= simulatedopcount)
 943                 return;
 944
 945         if (debug)
 946                 prt("%lu close/open\n", testcalls);
 947         if (close(fd)) {
 948                 prterr("docloseopen: close");
 949                 report_failure(180);
 950         }
 951         fd = open(fname, O_RDWR|o_direct, 0);
 952         if (fd < 0) {
 953                 prterr("docloseopen: open");
 954                 report_failure(181);
 955         }
 956 }
 957
 958
 959 void
 960 test(void)
 961 {
 962         unsigned long   offset;
 963         unsigned long   size = maxoplen;
 964         unsigned long   rv = random();
 965         unsigned long   op = rv % (3 + !lite + mapped_writes + fallocate_calls + punch_hole_calls);
 966         /* turn off the map read if necessary */
 967
 968         if (op == 2 && !mapped_reads)
 969             op = 0;
 970
 971         if (simulatedopcount > 0 && testcalls == simulatedopcount)
 972                 writefileimage();
 973
 974         testcalls++;
 975
 976         if (closeprob)
 977                 closeopen = (rv >> 3) < (1 << 28) / closeprob;
 978
 979         if (debugstart > 0 && testcalls >= debugstart)
 980                 debug = 1;
 981
 982         if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
 983                 prt("%lu...\n", testcalls);
 984
 985         /*
 986          *                 lite  !lite
 987          * READ:        op = 0     0
 988          * WRITE:       op = 1     1
 989          * MAPREAD:     op = 2     2
 990          * TRUNCATE:    op = -     3
 991          * MAPWRITE:    op = 3     4
 992          * FALLOCATE:   op = -     5
 993          * PUNCH HOLE:  op = -     6
 994          */
 995         if (lite ? 0 : op == 3 && (style & 1) == 0) /* vanilla truncate? */
 996                 dotruncate(random() % maxfilelen);
 997         else {
 998                 if (randomoplen)
 999                         size = random() % (maxoplen+1);
1000
1001                 if (lite ? 0 : op == 3) {
1002                         /* truncate */
1003                         dotruncate(size);
1004                 } else {
1005                         offset = random();
1006                         if (op == 5) {
1007                                 /* fallocate */
1008                                 offset %= maxfilelen;
1009                                 if (offset + size > maxfilelen)
1010                                         size = maxfilelen - offset;
1011                                 do_preallocate(offset, size);
1012                         } else if (op == 6) {
1013                                 offset %= maxfilelen;
1014                                 if (offset + size > maxfilelen)
1015                                         size = maxfilelen - offset;
1016                                 do_punch_hole(offset, size);
1017                         } else if (op == 1 || op == (lite ? 3 : 4)) {
1018                                 /* write / mapwrite */
1019                                 offset %= maxfilelen;
1020                                 if (offset + size > maxfilelen)
1021                                         size = maxfilelen - offset;
1022                                 if (op != 1)
1023                                         domapwrite(offset, size);
1024                                 else
1025                                         dowrite(offset, size);
1026                         } else {
1027                                 /* read / mapread */
1028                                 if (file_size)
1029                                         offset %= file_size;
1030                                 else
1031                                         offset = 0;
1032                                 if (offset + size > file_size)
1033                                         size = file_size - offset;
1034                                 if (op != 0)
1035                                         domapread(offset, size);
1036                                 else
1037                                         doread(offset, size);
1038                         }
1039                 }
1040         }
1041         if (sizechecks && testcalls > simulatedopcount)
1042                 check_size();
1043         if (closeopen)
1044                 docloseopen();
1045 }
1046
1047
1048 void
1049 cleanup(sig)
1050         int     sig;
1051 {
1052         if (sig)
1053                 prt("signal %d\n", sig);
1054         prt("testcalls = %lu\n", testcalls);
1055         exit(sig);
1056 }
1057
1058
1059 void
1060 usage(void)
1061 {
1062         fprintf(stdout, "usage: %s",
1063                 "fsx [-dnqxAFLOWZ] [-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\
1064         -b opnum: beginning operation number (default 1)\n\
1065         -c P: 1 in P chance of file close+open at each op (default infinity)\n\
1066         -d: debug output for all operations\n\
1067         -f flush and invalidate cache after I/O\n\
1068         -l flen: the upper bound on file size (default 262144)\n\
1069         -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
1070         -n: no verifications of file size\n\
1071         -o oplen: the upper bound on operation size (default 65536)\n\
1072         -p progressinterval: debug output at specified operation interval\n\
1073         -q: quieter operation\n\
1074         -r readbdy: 4096 would make reads page aligned (default 1)\n\
1075         -s style: 1 gives smaller truncates (default 0)\n\
1076         -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
1077         -w writebdy: 4096 would make writes page aligned (default 1)\n\
1078         -x: preallocate file space before starting, XFS only (default 0)\n\
1079         -y synchronize changes to a file\n"
1080
1081 #ifdef AIO
1082 "       -A: Use the AIO system calls\n"
1083 #endif
1084 "       -D startingop: debug output starting at specified operation\n"
1085 #ifdef FALLOCATE
1086 "       -F: Do not use fallocate (preallocation) calls\n"
1087 #endif
1088 #ifdef FALLOC_FL_PUNCH_HOLE
1089 "       -H: Do not use punch hole calls\n"
1090 #endif
1091 "       -L: fsxLite - no file creations & no file size changes\n\
1092         -N numops: total # operations to do (default infinity)\n\
1093         -O: use oplen (see -o flag) for every op (default random)\n\
1094         -P: save .fsxlog and .fsxgood files in dirpath (default ./)\n\
1095         -S seed: for random # generator (default 1) 0 gets timestamp\n\
1096         -W: mapped write operations DISabled\n\
1097         -R: read() system calls only (mapped reads disabled)\n\
1098         -Z: O_DIRECT (use -R, -W, -r and -w too)\n\
1099         fname: this filename is REQUIRED (no default)\n");
1100         exit(90);
1101 }
1102
1103
1104 int
1105 getnum(char *s, char **e)
1106 {
1107         int ret;
1108
1109         *e = (char *) 0;
1110         ret = strtol(s, e, 0);
1111         if (*e)
1112                 switch (**e) {
1113                 case 'b':
1114                 case 'B':
1115                         ret *= 512;
1116                         *e = *e + 1;
1117                         break;
1118                 case 'k':
1119                 case 'K':
1120                         ret *= 1024;
1121                         *e = *e + 1;
1122                         break;
1123                 case 'm':
1124                 case 'M':
1125                         ret *= 1024*1024;
1126                         *e = *e + 1;
1127                         break;
1128                 case 'w':
1129                 case 'W':
1130                         ret *= 4;
1131                         *e = *e + 1;
1132                         break;
1133                 }
1134         return (ret);
1135 }
1136
1137 #ifdef AIO
1138
1139 #define QSZ     1024
1140 io_context_t    io_ctx;
1141 struct iocb     iocb;
1142
1143 int aio_setup()
1144 {
1145         int ret;
1146         ret = io_queue_init(QSZ, &io_ctx);
1147         if (ret != 0) {
1148                 fprintf(stderr, "aio_setup: io_queue_init failed: %s\n",
1149                         strerror(ret));
1150                 return(-1);
1151         }
1152         return(0);
1153 }
1154
1155 int
1156 __aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
1157 {
1158         struct io_event event;
1159         static struct timespec ts;
1160         struct iocb *iocbs[] = { &iocb };
1161         int ret;
1162         long res;
1163
1164         if (rw == READ) {
1165                 io_prep_pread(&iocb, fd, buf, len, offset);
1166         } else {
1167                 io_prep_pwrite(&iocb, fd, buf, len, offset);
1168         }
1169
1170         ts.tv_sec = 30;
1171         ts.tv_nsec = 0;
1172         ret = io_submit(io_ctx, 1, iocbs);
1173         if (ret != 1) {
1174                 fprintf(stderr, "errcode=%d\n", ret);
1175                 fprintf(stderr, "aio_rw: io_submit failed: %s\n",
1176                                 strerror(ret));
1177                 goto out_error;
1178         }
1179
1180         ret = io_getevents(io_ctx, 1, 1, &event, &ts);
1181         if (ret != 1) {
1182                 if (ret == 0)
1183                         fprintf(stderr, "aio_rw: no events available\n");
1184                 else {
1185                         fprintf(stderr, "errcode=%d\n", -ret);
1186                         fprintf(stderr, "aio_rw: io_getevents failed: %s\n",
1187                                         strerror(-ret));
1188                 }
1189                 goto out_error;
1190         }
1191         if (len != event.res) {
1192                 /*
1193                  * The b0rked libaio defines event.res as unsigned.
1194                  * However the kernel strucuture has it signed,
1195                  * and it's used to pass negated error value.
1196                  * Till the library is fixed use the temp var.
1197                  */
1198                 res = (long)event.res;
1199                 if (res >= 0)
1200                         fprintf(stderr, "bad io length: %lu instead of %u\n",
1201                                         res, len);
1202                 else {
1203                         fprintf(stderr, "errcode=%ld\n", -res);
1204                         fprintf(stderr, "aio_rw: async io failed: %s\n",
1205                                         strerror(-res));
1206                         ret = res;
1207                         goto out_error;
1208                 }
1209
1210         }
1211         return event.res;
1212
1213 out_error:
1214         /*
1215          * The caller expects error return in traditional libc
1216          * convention, i.e. -1 and the errno set to error.
1217          */
1218         errno = -ret;
1219         return -1;
1220 }
1221
1222 int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
1223 {
1224         int ret;
1225
1226         if (aio) {
1227                 ret = __aio_rw(rw, fd, buf, len, offset);
1228         } else {
1229                 if (rw == READ)
1230                         ret = read(fd, buf, len);
1231                 else
1232                         ret = write(fd, buf, len);
1233         }
1234         return ret;
1235 }
1236
1237 #endif
1238
1239 void
1240 test_fallocate()
1241 {
1242 #ifdef FALLOCATE
1243         if (!lite && fallocate_calls) {
1244                 if (fallocate(fd, 0, 0, 1) && errno == EOPNOTSUPP) {
1245                         if(!quiet)
1246                                 prt("fsx: main: filesystem does not support fallocate, disabling\n");
1247                         fallocate_calls = 0;
1248                 } else {
1249                         ftruncate(fd, 0);
1250                 }
1251         }
1252 #else /* ! FALLOCATE */
1253         fallocate_calls = 0;
1254 #endif
1255
1256 }
1257
1258 void
1259 test_punch_hole()
1260 {
1261 #ifdef FALLOC_FL_PUNCH_HOLE
1262         if (!lite && punch_hole_calls) {
1263                 if (fallocate(fd, 0, 0,
1264                         FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE) &&
1265                         errno == EOPNOTSUPP) {
1266
1267                         warn("main: filesystem does not support fallocate punch hole, disabling");
1268                         punch_hole_calls = 0;
1269                 }
1270         }
1271 #else /* ! PUNCH HOLE */
1272         punch_hole_calls = 0;
1273 #endif
1274 }
1275
1276 int
1277 main(int argc, char **argv)
1278 {
1279         int     i, style, ch;
1280         char    *endp;
1281         char goodfile[1024];
1282         char logfile[1024];
1283
1284         goodfile[0] = 0;
1285         logfile[0] = 0;
1286
1287         page_size = getpagesize();
1288         page_mask = page_size - 1;
1289         mmap_mask = page_mask;
1290
1291
1292         setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
1293
1294         while ((ch = getopt(argc, argv, "b:c:dfl:m:no:p:qr:s:t:w:xyAD:FHLN:OP:RS:WZ"))
1295                != EOF)
1296                 switch (ch) {
1297                 case 'b':
1298                         simulatedopcount = getnum(optarg, &endp);
1299                         if (!quiet)
1300                                 fprintf(stdout, "Will begin at operation %ld\n",
1301                                         simulatedopcount);
1302                         if (simulatedopcount == 0)
1303                                 usage();
1304                         simulatedopcount -= 1;
1305                         break;
1306                 case 'c':
1307                         closeprob = getnum(optarg, &endp);
1308                         if (!quiet)
1309                                 fprintf(stdout,
1310                                         "Chance of close/open is 1 in %d\n",
1311                                         closeprob);
1312                         if (closeprob <= 0)
1313                                 usage();
1314                         break;
1315                 case 'd':
1316                         debug = 1;
1317                         break;
1318                 case 'f':
1319                         flush = 1;
1320                         break;
1321                 case 'l':
1322                         maxfilelen = getnum(optarg, &endp);
1323                         if (maxfilelen <= 0)
1324                                 usage();
1325                         break;
1326                 case 'm':
1327                         monitorstart = getnum(optarg, &endp);
1328                         if (monitorstart < 0)
1329                                 usage();
1330                         if (!endp || *endp++ != ':')
1331                                 usage();
1332                         monitorend = getnum(endp, &endp);
1333                         if (monitorend < 0)
1334                                 usage();
1335                         if (monitorend == 0)
1336                                 monitorend = -1; /* aka infinity */
1337                         debug = 1;
1338                 case 'n':
1339                         sizechecks = 0;
1340                         break;
1341                 case 'o':
1342                         maxoplen = getnum(optarg, &endp);
1343                         if (maxoplen <= 0)
1344                                 usage();
1345                         break;
1346                 case 'p':
1347                         progressinterval = getnum(optarg, &endp);
1348                         if (progressinterval == 0)
1349                                 usage();
1350                         break;
1351                 case 'q':
1352                         quiet = 1;
1353                         break;
1354                 case 'r':
1355                         readbdy = getnum(optarg, &endp);
1356                         if (readbdy <= 0)
1357                                 usage();
1358                         break;
1359                 case 's':
1360                         style = getnum(optarg, &endp);
1361                         if (style < 0 || style > 1)
1362                                 usage();
1363                         break;
1364                 case 't':
1365                         truncbdy = getnum(optarg, &endp);
1366                         if (truncbdy <= 0)
1367                                 usage();
1368                         break;
1369                 case 'w':
1370                         writebdy = getnum(optarg, &endp);
1371                         if (writebdy <= 0)
1372                                 usage();
1373                         break;
1374                 case 'x':
1375                         prealloc = 1;
1376                         break;
1377                 case 'y':
1378                         do_fsync = 1;
1379                         break;
1380                 case 'A':
1381                         aio = 1;
1382                         break;
1383                 case 'D':
1384                         debugstart = getnum(optarg, &endp);
1385                         if (debugstart < 1)
1386                                 usage();
1387                         break;
1388                 case 'F':
1389                         fallocate_calls = 0;
1390                         break;
1391                 case 'H':
1392                         punch_hole_calls = 0;
1393                         break;
1394                 case 'L':
1395                         lite = 1;
1396                         break;
1397                 case 'N':
1398                         numops = getnum(optarg, &endp);
1399                         if (numops < 0)
1400                                 usage();
1401                         break;
1402                 case 'O':
1403                         randomoplen = 0;
1404                         break;
1405                 case 'P':
1406                         strncpy(goodfile, optarg, sizeof(goodfile));
1407                         strcat(goodfile, "/");
1408                         strncpy(logfile, optarg, sizeof(logfile));
1409                         strcat(logfile, "/");
1410                         break;
1411                 case 'R':
1412                         mapped_reads = 0;
1413                         break;
1414                 case 'S':
1415                         seed = getnum(optarg, &endp);
1416                         if (seed == 0)
1417                                 seed = time(0) % 10000;
1418                         if (!quiet)
1419                                 fprintf(stdout, "Seed set to %d\n", seed);
1420                         if (seed < 0)
1421                                 usage();
1422                         break;
1423                 case 'W':
1424                         mapped_writes = 0;
1425                         if (!quiet)
1426                                 fprintf(stdout, "mapped writes DISABLED\n");
1427                         break;
1428                 case 'Z':
1429                         o_direct = O_DIRECT;
1430                         break;
1431                 default:
1432                         usage();
1433                         /* NOTREACHED */
1434                 }
1435         argc -= optind;
1436         argv += optind;
1437         if (argc != 1)
1438                 usage();
1439         fname = argv[0];
1440
1441         signal(SIGHUP,  cleanup);
1442         signal(SIGINT,  cleanup);
1443         signal(SIGPIPE, cleanup);
1444         signal(SIGALRM, cleanup);
1445         signal(SIGTERM, cleanup);
1446         signal(SIGXCPU, cleanup);
1447         signal(SIGXFSZ, cleanup);
1448         signal(SIGVTALRM,       cleanup);
1449         signal(SIGUSR1, cleanup);
1450         signal(SIGUSR2, cleanup);
1451
1452         initstate(seed, state, 256);
1453         setstate(state);
1454         fd = open(fname,
1455                 O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC)|o_direct, 0666);
1456         if (fd < 0) {
1457                 prterr(fname);
1458                 exit(91);
1459         }
1460 #ifdef XFS
1461         if (prealloc) {
1462                 xfs_flock64_t   resv = { 0 };
1463 #ifdef HAVE_XFS_PLATFORM_DEFS_H
1464                 if (!platform_test_xfs_fd(fd)) {
1465                         prterr(fname);
1466                         fprintf(stderr, "main: cannot prealloc, non XFS\n");
1467                         exit(96);
1468                 }
1469 #endif
1470                 resv.l_len = maxfilelen;
1471                 if ((xfsctl(fname, fd, XFS_IOC_RESVSP, &resv)) < 0) {
1472                         prterr(fname);
1473                         exit(97);
1474                 }
1475         }
1476 #endif
1477         strncat(goodfile, fname, 256);
1478         strcat (goodfile, ".fsxgood");
1479         fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
1480         if (fsxgoodfd < 0) {
1481                 prterr(goodfile);
1482                 exit(92);
1483         }
1484         strncat(logfile, fname, 256);
1485         strcat (logfile, ".fsxlog");
1486         fsxlogf = fopen(logfile, "w");
1487         if (fsxlogf == NULL) {
1488                 prterr(logfile);
1489                 exit(93);
1490         }
1491
1492 #ifdef AIO
1493         if (aio)
1494                 aio_setup();
1495 #endif
1496
1497         if (lite) {
1498                 off_t ret;
1499                 file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
1500                 if (file_size == (off_t)-1) {
1501                         prterr(fname);
1502                         warn("main: lseek eof");
1503                         exit(94);
1504                 }
1505                 ret = lseek(fd, (off_t)0, SEEK_SET);
1506                 if (ret == (off_t)-1) {
1507                         prterr(fname);
1508                         warn("main: lseek 0");
1509                         exit(95);
1510                 }
1511         }
1512         original_buf = (char *) malloc(maxfilelen);
1513         for (i = 0; i < maxfilelen; i++)
1514                 original_buf[i] = random() % 256;
1515         good_buf = (char *) malloc(maxfilelen + writebdy);
1516         good_buf = round_up(good_buf, writebdy, 0);
1517         memset(good_buf, '\0', maxfilelen);
1518         temp_buf = (char *) malloc(maxoplen + readbdy);
1519         temp_buf = round_up(temp_buf, readbdy, 0);
1520         memset(temp_buf, '\0', maxoplen);
1521         if (lite) {     /* zero entire existing file */
1522                 ssize_t written;
1523
1524                 written = write(fd, good_buf, (size_t)maxfilelen);
1525                 if (written != maxfilelen) {
1526                         if (written == -1) {
1527                                 prterr(fname);
1528                                 warn("main: error on write");
1529                         } else
1530                                 warn("main: short write, 0x%x bytes instead "
1531                                         "of 0x%lx\n",
1532                                         (unsigned)written,
1533                                         maxfilelen);
1534                         exit(98);
1535                 }
1536         } else
1537                 check_trunc_hack();
1538
1539         test_fallocate();
1540         test_punch_hole();
1541
1542         while (numops == -1 || numops--)
1543                 test();
1544
1545         if (close(fd)) {
1546                 prterr("close");
1547                 report_failure(99);
1548         }
1549         prt("All operations completed A-OK!\n");
1550
1551         exit(0);
1552         return 0;
1553 }