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 #include <stdbool.h>
  24 #ifdef HAVE_ERR_H
  25 #include <err.h>
  26 #endif
  27 #include <signal.h>
  28 #include <stdio.h>
  29 #include <stddef.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <stdarg.h>
  33 #include <errno.h>
  34 #ifdef AIO
  35 #include <libaio.h>
  36 #endif
  37 #include <sys/syscall.h>
  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 /* Operation flags */
  46
  47 enum opflags { FL_NONE = 0, FL_SKIPPED = 1, FL_CLOSE_OPEN = 2, FL_KEEP_SIZE = 4 };
  48
  49 /*
  50  *      A log entry is an operation and a bunch of arguments.
  51  */
  52
  53 struct log_entry {
  54         int     operation;
  55         int     nr_args;
  56         int     args[4];
  57         enum opflags flags;
  58 };
  59
  60 #define LOGSIZE 10000
  61
  62 struct log_entry        oplog[LOGSIZE]; /* the log */
  63 int                     logptr = 0;     /* current position in log */
  64 int                     logcount = 0;   /* total ops */
  65
  66 /*
  67  * The operation matrix is complex due to conditional execution of different
  68  * features. Hence when we come to deciding what operation to run, we need to
  69  * be careful in how we select the different operations. The active operations
  70  * are mapped to numbers as follows:
  71  *
  72  *                      lite    !lite   integrity
  73  * READ:                0       0       0
  74  * WRITE:               1       1       1
  75  * MAPREAD:             2       2       2
  76  * MAPWRITE:            3       3       3
  77  * TRUNCATE:            -       4       4
  78  * FALLOCATE:           -       5       5
  79  * PUNCH HOLE:          -       6       6
  80  * ZERO RANGE:          -       7       7
  81  * COLLAPSE RANGE:      -       8       8
  82  * FSYNC:               -       -       9
  83  *
  84  * When mapped read/writes are disabled, they are simply converted to normal
  85  * reads and writes. When fallocate/fpunch calls are disabled, they are
  86  * skipped.
  87  *
  88  * Because of the "lite" version, we also need to have different "maximum
  89  * operation" defines to allow the ops to be selected correctly based on the
  90  * mode being run.
  91  */
  92
  93 enum {
  94         /* common operations */
  95         OP_READ = 0,
  96         OP_WRITE,
  97         OP_MAPREAD,
  98         OP_MAPWRITE,
  99         OP_MAX_LITE,
 100
 101         /* !lite operations */
 102         OP_TRUNCATE = OP_MAX_LITE,
 103         OP_FALLOCATE,
 104         OP_PUNCH_HOLE,
 105         OP_ZERO_RANGE,
 106         OP_COLLAPSE_RANGE,
 107         OP_INSERT_RANGE,
 108         OP_CLONE_RANGE,
 109         OP_DEDUPE_RANGE,
 110         OP_COPY_RANGE,
 111         OP_MAX_FULL,
 112
 113         /* integrity operations */
 114         OP_FSYNC = OP_MAX_FULL,
 115         OP_MAX_INTEGRITY,
 116 };
 117
 118 #undef PAGE_SIZE
 119 #define PAGE_SIZE       getpagesize()
 120 #undef PAGE_MASK
 121 #define PAGE_MASK       (PAGE_SIZE - 1)
 122
 123 char    *original_buf;                  /* a pointer to the original data */
 124 char    *good_buf;                      /* a pointer to the correct data */
 125 char    *temp_buf;                      /* a pointer to the current data */
 126 char    *fname;                         /* name of our test file */
 127 char    *bname;                         /* basename of our test file */
 128 char    *logdev;                        /* -i flag */
 129 char    *logid;                         /* -j flag */
 130 char    dname[1024];                    /* -P flag */
 131 char    goodfile[PATH_MAX];
 132 int     dirpath = 0;                    /* -P flag */
 133 int     fd;                             /* fd for our test file */
 134
 135 blksize_t       block_size = 0;
 136 off_t           file_size = 0;
 137 off_t           biggest = 0;
 138 unsigned long   testcalls = 0;          /* calls to function "test" */
 139
 140 unsigned long   simulatedopcount = 0;   /* -b flag */
 141 int     closeprob = 0;                  /* -c flag */
 142 int     debug = 0;                      /* -d flag */
 143 unsigned long   debugstart = 0;         /* -D flag */
 144 char    filldata = 0;                   /* -g flag */
 145 int     flush = 0;                      /* -f flag */
 146 int     do_fsync = 0;                   /* -y flag */
 147 unsigned long   maxfilelen = 256 * 1024;        /* -l flag */
 148 int     sizechecks = 1;                 /* -n flag disables them */
 149 int     maxoplen = 64 * 1024;           /* -o flag */
 150 int     quiet = 0;                      /* -q flag */
 151 unsigned long progressinterval = 0;     /* -p flag */
 152 int     readbdy = 1;                    /* -r flag */
 153 int     style = 0;                      /* -s flag */
 154 int     prealloc = 0;                   /* -x flag */
 155 int     truncbdy = 1;                   /* -t flag */
 156 int     writebdy = 1;                   /* -w flag */
 157 long    monitorstart = -1;              /* -m flag */
 158 long    monitorend = -1;                /* -m flag */
 159 int     lite = 0;                       /* -L flag */
 160 long    numops = -1;                    /* -N flag */
 161 int     randomoplen = 1;                /* -O flag disables it */
 162 int     seed = 1;                       /* -S flag */
 163 int     mapped_writes = 1;              /* -W flag disables */
 164 int     fallocate_calls = 1;            /* -F flag disables */
 165 int     keep_size_calls = 1;            /* -K flag disables */
 166 int     punch_hole_calls = 1;           /* -H flag disables */
 167 int     zero_range_calls = 1;           /* -z flag disables */
 168 int     collapse_range_calls = 1;       /* -C flag disables */
 169 int     insert_range_calls = 1;         /* -I flag disables */
 170 int     mapped_reads = 1;               /* -R flag disables it */
 171 int     check_file = 0;                 /* -X flag enables */
 172 int     clone_range_calls = 1;          /* -J flag disables */
 173 int     dedupe_range_calls = 1;         /* -B flag disables */
 174 int     copy_range_calls = 1;           /* -E flag disables */
 175 int     integrity = 0;                  /* -i flag */
 176 int     fsxgoodfd = 0;
 177 int     o_direct;                       /* -Z */
 178 int     aio = 0;
 179 int     mark_nr = 0;
 180
 181 int page_size;
 182 int page_mask;
 183 int mmap_mask;
 184 #ifdef AIO
 185 int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset);
 186 #define READ 0
 187 #define WRITE 1
 188 #define fsxread(a,b,c,d)        aio_rw(READ, a,b,c,d)
 189 #define fsxwrite(a,b,c,d)       aio_rw(WRITE, a,b,c,d)
 190 #else
 191 #define fsxread(a,b,c,d)        read(a,b,c)
 192 #define fsxwrite(a,b,c,d)       write(a,b,c)
 193 #endif
 194
 195 const char *replayops = NULL;
 196 const char *recordops = NULL;
 197 FILE *  fsxlogf = NULL;
 198 FILE *  replayopsf = NULL;
 199 char opsfile[PATH_MAX];
 200 int badoff = -1;
 201 int closeopen = 0;
 202
 203 static void *round_ptr_up(void *ptr, unsigned long align, unsigned long offset)
 204 {
 205         unsigned long ret = (unsigned long)ptr;
 206
 207         ret = ((ret + align - 1) & ~(align - 1));
 208         ret += offset;
 209         return (void *)ret;
 210 }
 211
 212 void
 213 vwarnc(int code, const char *fmt, va_list ap)
 214 {
 215         if (logid)
 216                 fprintf(stderr, "%s: ", logid);
 217         fprintf(stderr, "fsx: ");
 218         if (fmt != NULL) {
 219                 vfprintf(stderr, fmt, ap);
 220                 fprintf(stderr, ": ");
 221         }
 222         fprintf(stderr, "%s\n", strerror(code));
 223 }
 224
 225 void
 226 warn(const char * fmt, ...)  {
 227         va_list ap;
 228         va_start(ap, fmt);
 229         vwarnc(errno, fmt, ap);
 230         va_end(ap);
 231 }
 232
 233 void
 234 prt(const char *fmt, ...)
 235 {
 236         va_list args;
 237
 238         if (logid)
 239                 fprintf(stdout, "%s: ", logid);
 240         va_start(args, fmt);
 241         vfprintf(stdout, fmt, args);
 242         va_end(args);
 243         if (fsxlogf) {
 244                 va_start(args, fmt);
 245                 vfprintf(fsxlogf, fmt, args);
 246                 va_end(args);
 247         }
 248 }
 249
 250 void
 251 prterr(const char *prefix)
 252 {
 253         prt("%s%s%s\n", prefix, prefix ? ": " : "", strerror(errno));
 254 }
 255
 256
 257 static const char *op_names[] = {
 258         [OP_READ] = "read",
 259         [OP_WRITE] = "write",
 260         [OP_MAPREAD] = "mapread",
 261         [OP_MAPWRITE] = "mapwrite",
 262         [OP_TRUNCATE] = "truncate",
 263         [OP_FALLOCATE] = "fallocate",
 264         [OP_PUNCH_HOLE] = "punch_hole",
 265         [OP_ZERO_RANGE] = "zero_range",
 266         [OP_COLLAPSE_RANGE] = "collapse_range",
 267         [OP_INSERT_RANGE] = "insert_range",
 268         [OP_CLONE_RANGE] = "clone_range",
 269         [OP_DEDUPE_RANGE] = "dedupe_range",
 270         [OP_COPY_RANGE] = "copy_range",
 271         [OP_FSYNC] = "fsync",
 272 };
 273
 274 static const char *op_name(int operation)
 275 {
 276         if (operation >= 0 &&
 277             operation < sizeof(op_names) / sizeof(op_names[0]))
 278                 return op_names[operation];
 279         return NULL;
 280 }
 281
 282 static int op_code(const char *name)
 283 {
 284         int i;
 285
 286         for (i = 0; i < sizeof(op_names) / sizeof(op_names[0]); i++)
 287                 if (op_names[i] && strcmp(name, op_names[i]) == 0)
 288                         return i;
 289         return -1;
 290 }
 291
 292 void
 293 log5(int operation, int arg0, int arg1, int arg2, enum opflags flags)
 294 {
 295         struct log_entry *le;
 296
 297         le = &oplog[logptr];
 298         le->operation = operation;
 299         if (closeopen)
 300                 flags |= FL_CLOSE_OPEN;
 301         le->args[0] = arg0;
 302         le->args[1] = arg1;
 303         le->args[2] = arg2;
 304         le->args[3] = file_size;
 305         le->nr_args = 4;
 306         le->flags = flags;
 307         logptr++;
 308         logcount++;
 309         if (logptr >= LOGSIZE)
 310                 logptr = 0;
 311 }
 312
 313 void
 314 log4(int operation, int arg0, int arg1, enum opflags flags)
 315 {
 316         struct log_entry *le;
 317
 318         le = &oplog[logptr];
 319         le->operation = operation;
 320         if (closeopen)
 321                 flags |= FL_CLOSE_OPEN;
 322         le->args[0] = arg0;
 323         le->args[1] = arg1;
 324         le->args[2] = file_size;
 325         le->nr_args = 3;
 326         le->flags = flags;
 327         logptr++;
 328         logcount++;
 329         if (logptr >= LOGSIZE)
 330                 logptr = 0;
 331 }
 332
 333 void
 334 logdump(void)
 335 {
 336         FILE    *logopsf;
 337         int     i, count, down;
 338         struct log_entry        *lp;
 339
 340         prt("LOG DUMP (%d total operations):\n", logcount);
 341
 342         logopsf = fopen(opsfile, "w");
 343         if (!logopsf)
 344                 prterr(opsfile);
 345
 346         if (logcount < LOGSIZE) {
 347                 i = 0;
 348                 count = logcount;
 349         } else {
 350                 i = logptr;
 351                 count = LOGSIZE;
 352         }
 353         for ( ; count > 0; count--) {
 354                 bool overlap, overlap2;
 355                 int opnum;
 356
 357                 opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
 358                 prt("%d(%3d mod 256): ", opnum, opnum%256);
 359                 lp = &oplog[i];
 360
 361                 overlap = badoff >= lp->args[0] &&
 362                           badoff < lp->args[0] + lp->args[1];
 363
 364                 if (lp->flags & FL_SKIPPED) {
 365                         prt("SKIPPED (no operation)");
 366                         goto skipped;
 367                 }
 368
 369                 switch (lp->operation) {
 370                 case OP_MAPREAD:
 371                         prt("MAPREAD  0x%x thru 0x%x\t(0x%x bytes)",
 372                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 373                             lp->args[1]);
 374                         if (overlap)
 375                                 prt("\t***RRRR***");
 376                         break;
 377                 case OP_MAPWRITE:
 378                         prt("MAPWRITE 0x%x thru 0x%x\t(0x%x bytes)",
 379                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 380                             lp->args[1]);
 381                         if (overlap)
 382                                 prt("\t******WWWW");
 383                         break;
 384                 case OP_READ:
 385                         prt("READ     0x%x thru 0x%x\t(0x%x bytes)",
 386                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 387                             lp->args[1]);
 388                         if (overlap)
 389                                 prt("\t***RRRR***");
 390                         break;
 391                 case OP_WRITE:
 392                         prt("WRITE    0x%x thru 0x%x\t(0x%x bytes)",
 393                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 394                             lp->args[1]);
 395                         if (lp->args[0] > lp->args[2])
 396                                 prt(" HOLE");
 397                         else if (lp->args[0] + lp->args[1] > lp->args[2])
 398                                 prt(" EXTEND");
 399                         overlap = (badoff >= lp->args[0] ||
 400                                    badoff >=lp->args[2]) &&
 401                                   badoff < lp->args[0] + lp->args[1];
 402                         if (overlap)
 403                                 prt("\t***WWWW");
 404                         break;
 405                 case OP_TRUNCATE:
 406                         down = lp->args[1] < lp->args[2];
 407                         prt("TRUNCATE %s\tfrom 0x%x to 0x%x",
 408                             down ? "DOWN" : "UP", lp->args[2], lp->args[1]);
 409                         overlap = badoff >= lp->args[1 + !down] &&
 410                                   badoff < lp->args[1 + !!down];
 411                         if (overlap)
 412                                 prt("\t******WWWW");
 413                         break;
 414                 case OP_FALLOCATE:
 415                         /* 0: offset 1: length 2: where alloced */
 416                         prt("FALLOC   0x%x thru 0x%x\t(0x%x bytes) ",
 417                                 lp->args[0], lp->args[0] + lp->args[1],
 418                                 lp->args[1]);
 419                         if (lp->args[0] + lp->args[1] <= lp->args[2])
 420                                 prt("INTERIOR");
 421                         else if (lp->flags & FL_KEEP_SIZE)
 422                                 prt("PAST_EOF");
 423                         else
 424                                 prt("EXTENDING");
 425                         if (overlap)
 426                                 prt("\t******FFFF");
 427                         break;
 428                 case OP_PUNCH_HOLE:
 429                         prt("PUNCH    0x%x thru 0x%x\t(0x%x bytes)",
 430                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 431                             lp->args[1]);
 432                         if (overlap)
 433                                 prt("\t******PPPP");
 434                         break;
 435                 case OP_ZERO_RANGE:
 436                         prt("ZERO     0x%x thru 0x%x\t(0x%x bytes)",
 437                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 438                             lp->args[1]);
 439                         if (overlap)
 440                                 prt("\t******ZZZZ");
 441                         break;
 442                 case OP_COLLAPSE_RANGE:
 443                         prt("COLLAPSE 0x%x thru 0x%x\t(0x%x bytes)",
 444                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 445                             lp->args[1]);
 446                         if (overlap)
 447                                 prt("\t******CCCC");
 448                         break;
 449                 case OP_INSERT_RANGE:
 450                         prt("INSERT 0x%x thru 0x%x\t(0x%x bytes)",
 451                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 452                             lp->args[1]);
 453                         if (overlap)
 454                                 prt("\t******IIII");
 455                         break;
 456                 case OP_CLONE_RANGE:
 457                         prt("CLONE 0x%x thru 0x%x\t(0x%x bytes) to 0x%x thru 0x%x",
 458                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 459                             lp->args[1],
 460                             lp->args[2], lp->args[2] + lp->args[1] - 1);
 461                         overlap2 = badoff >= lp->args[2] &&
 462                                   badoff < lp->args[2] + lp->args[1];
 463                         if (overlap && overlap2)
 464                                 prt("\tJJJJ**JJJJ");
 465                         else if (overlap)
 466                                 prt("\tJJJJ******");
 467                         else if (overlap2)
 468                                 prt("\t******JJJJ");
 469                         break;
 470                 case OP_DEDUPE_RANGE:
 471                         prt("DEDUPE 0x%x thru 0x%x\t(0x%x bytes) to 0x%x thru 0x%x",
 472                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 473                             lp->args[1],
 474                             lp->args[2], lp->args[2] + lp->args[1] - 1);
 475                         overlap2 = badoff >= lp->args[2] &&
 476                                   badoff < lp->args[2] + lp->args[1];
 477                         if (overlap && overlap2)
 478                                 prt("\tBBBB**BBBB");
 479                         else if (overlap)
 480                                 prt("\tBBBB******");
 481                         else if (overlap2)
 482                                 prt("\t******BBBB");
 483                         break;
 484                 case OP_COPY_RANGE:
 485                         prt("COPY 0x%x thru 0x%x\t(0x%x bytes) to 0x%x thru 0x%x",
 486                             lp->args[0], lp->args[0] + lp->args[1] - 1,
 487                             lp->args[1],
 488                             lp->args[2], lp->args[2] + lp->args[1] - 1);
 489                         overlap2 = badoff >= lp->args[2] &&
 490                                   badoff < lp->args[2] + lp->args[1];
 491                         if (overlap && overlap2)
 492                                 prt("\tEEEE**EEEE");
 493                         else if (overlap)
 494                                 prt("\tEEEE******");
 495                         else if (overlap2)
 496                                 prt("\t******EEEE");
 497                         break;
 498                 case OP_FSYNC:
 499                         prt("FSYNC");
 500                         break;
 501                 default:
 502                         prt("BOGUS LOG ENTRY (operation code = %d)!",
 503                             lp->operation);
 504                         continue;
 505                 }
 506
 507             skipped:
 508                 if (lp->flags & FL_CLOSE_OPEN)
 509                         prt("\n\t\tCLOSE/OPEN");
 510                 prt("\n");
 511                 i++;
 512                 if (i == LOGSIZE)
 513                         i = 0;
 514
 515                 if (logopsf) {
 516                         int j;
 517
 518                         if (lp->flags & FL_SKIPPED)
 519                                 fprintf(logopsf, "skip ");
 520                         fprintf(logopsf, "%s", op_name(lp->operation));
 521                         for (j = 0; j < lp->nr_args; j++)
 522                                 fprintf(logopsf, " 0x%x", lp->args[j]);
 523                         if (lp->flags & FL_KEEP_SIZE)
 524                                 fprintf(logopsf, " keep_size");
 525                         if (lp->flags & FL_CLOSE_OPEN)
 526                                 fprintf(logopsf, " close_open");
 527                         if (overlap)
 528                                 fprintf(logopsf, " *");
 529                         fprintf(logopsf, "\n");
 530                 }
 531         }
 532
 533         if (logopsf) {
 534                 if (fclose(logopsf) != 0)
 535                         prterr(opsfile);
 536                 else
 537                         prt("Log of operations saved to \"%s\"; "
 538                             "replay with --replay-ops\n",
 539                             opsfile);
 540         }
 541 }
 542
 543
 544 void
 545 save_buffer(char *buffer, off_t bufferlength, int fd)
 546 {
 547         off_t ret;
 548         ssize_t byteswritten;
 549
 550         if (fd <= 0 || bufferlength == 0)
 551                 return;
 552
 553         if (bufferlength > SSIZE_MAX) {
 554                 prt("fsx flaw: overflow in save_buffer\n");
 555                 exit(67);
 556         }
 557         if (lite) {
 558                 off_t size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 559                 if (size_by_seek == (off_t)-1)
 560                         prterr("save_buffer: lseek eof");
 561                 else if (bufferlength > size_by_seek) {
 562                         warn("save_buffer: .fsxgood file too short... will save 0x%llx bytes instead of 0x%llx\n", (unsigned long long)size_by_seek,
 563                              (unsigned long long)bufferlength);
 564                         bufferlength = size_by_seek;
 565                 }
 566         }
 567
 568         ret = lseek(fd, (off_t)0, SEEK_SET);
 569         if (ret == (off_t)-1)
 570                 prterr("save_buffer: lseek 0");
 571
 572         byteswritten = write(fd, buffer, (size_t)bufferlength);
 573         if (byteswritten != bufferlength) {
 574                 if (byteswritten == -1)
 575                         prterr("save_buffer write");
 576                 else
 577                         warn("save_buffer: short write, 0x%x bytes instead of 0x%llx\n",
 578                              (unsigned)byteswritten,
 579                              (unsigned long long)bufferlength);
 580         }
 581 }
 582
 583
 584 void
 585 report_failure(int status)
 586 {
 587         logdump();
 588
 589         if (fsxgoodfd) {
 590                 if (good_buf) {
 591                         save_buffer(good_buf, file_size, fsxgoodfd);
 592                         prt("Correct content saved for comparison\n");
 593                         prt("(maybe hexdump \"%s\" vs \"%s\")\n",
 594                             fname, goodfile);
 595                 }
 596                 close(fsxgoodfd);
 597         }
 598         exit(status);
 599 }
 600
 601
 602 #define short_at(cp) ((unsigned short)((*((unsigned char *)(cp)) << 8) | \
 603                                         *(((unsigned char *)(cp)) + 1)))
 604
 605 void
 606 mark_log(void)
 607 {
 608         char command[256];
 609         int ret;
 610
 611         snprintf(command, 256, "dmsetup message %s 0 mark %s.mark%d", logdev,
 612                  bname, mark_nr);
 613         ret = system(command);
 614         if (ret) {
 615                 prterr("dmsetup mark failed");
 616                 exit(211);
 617         }
 618 }
 619
 620 void
 621 dump_fsync_buffer(void)
 622 {
 623         char fname_buffer[PATH_MAX];
 624         int good_fd;
 625
 626         if (!good_buf)
 627                 return;
 628
 629         snprintf(fname_buffer, sizeof(fname_buffer), "%s%s.mark%d", dname,
 630                  bname, mark_nr);
 631         good_fd = open(fname_buffer, O_WRONLY|O_CREAT|O_TRUNC, 0666);
 632         if (good_fd < 0) {
 633                 prterr(fname_buffer);
 634                 exit(212);
 635         }
 636
 637         save_buffer(good_buf, file_size, good_fd);
 638         close(good_fd);
 639         prt("Dumped fsync buffer to %s\n", fname_buffer + dirpath);
 640 }
 641
 642 void
 643 check_buffers(char *buf, unsigned offset, unsigned size)
 644 {
 645         unsigned char c, t;
 646         unsigned i = 0;
 647         unsigned n = 0;
 648         unsigned op = 0;
 649         unsigned bad = 0;
 650
 651         if (memcmp(good_buf + offset, buf, size) != 0) {
 652                 prt("READ BAD DATA: offset = 0x%x, size = 0x%x, fname = %s\n",
 653                     offset, size, fname);
 654                 prt("OFFSET\tGOOD\tBAD\tRANGE\n");
 655                 while (size > 0) {
 656                         c = good_buf[offset];
 657                         t = buf[i];
 658                         if (c != t) {
 659                                 if (n < 16) {
 660                                         bad = short_at(&buf[i]);
 661                                         prt("0x%05x\t0x%04x\t0x%04x", offset,
 662                                             short_at(&good_buf[offset]), bad);
 663                                         op = buf[offset & 1 ? i+1 : i];
 664                                         prt("\t0x%05x\n", n);
 665                                         if (op)
 666                                                 prt("operation# (mod 256) for "
 667                                                   "the bad data may be %u\n",
 668                                                 ((unsigned)op & 0xff));
 669                                         else
 670                                                 prt("operation# (mod 256) for "
 671                                                   "the bad data unknown, check"
 672                                                   " HOLE and EXTEND ops\n");
 673                                 }
 674                                 n++;
 675                                 badoff = offset;
 676                         }
 677                         offset++;
 678                         i++;
 679                         size--;
 680                 }
 681                 report_failure(110);
 682         }
 683 }
 684
 685
 686 void
 687 check_size(void)
 688 {
 689         struct stat     statbuf;
 690         off_t   size_by_seek;
 691
 692         if (fstat(fd, &statbuf)) {
 693                 prterr("check_size: fstat");
 694                 statbuf.st_size = -1;
 695         }
 696         size_by_seek = lseek(fd, (off_t)0, SEEK_END);
 697         if (file_size != statbuf.st_size || file_size != size_by_seek) {
 698                 prt("Size error: expected 0x%llx stat 0x%llx seek 0x%llx\n",
 699                     (unsigned long long)file_size,
 700                     (unsigned long long)statbuf.st_size,
 701                     (unsigned long long)size_by_seek);
 702                 report_failure(120);
 703         }
 704 }
 705
 706
 707 void
 708 check_trunc_hack(void)
 709 {
 710         struct stat statbuf;
 711         off_t offset = file_size + (off_t)100000;
 712
 713         if (ftruncate(fd, file_size))
 714                 goto ftruncate_err;
 715         if (ftruncate(fd, offset))
 716                 goto ftruncate_err;
 717         fstat(fd, &statbuf);
 718         if (statbuf.st_size != offset) {
 719                 prt("no extend on truncate! not posix!\n");
 720                 exit(130);
 721         }
 722         if (ftruncate(fd, file_size)) {
 723 ftruncate_err:
 724                 prterr("check_trunc_hack: ftruncate");
 725                 exit(131);
 726         }
 727 }
 728
 729 void
 730 doflush(unsigned offset, unsigned size)
 731 {
 732         unsigned pg_offset;
 733         unsigned map_size;
 734         char    *p;
 735
 736         if (o_direct == O_DIRECT)
 737                 return;
 738
 739         pg_offset = offset & mmap_mask;
 740         map_size  = pg_offset + size;
 741
 742         if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
 743                               MAP_FILE | MAP_SHARED, fd,
 744                               (off_t)(offset - pg_offset))) == (char *)-1) {
 745                 prterr("doflush: mmap");
 746                 report_failure(202);
 747         }
 748         if (msync(p, map_size, MS_INVALIDATE) != 0) {
 749                 prterr("doflush: msync");
 750                 report_failure(203);
 751         }
 752         if (munmap(p, map_size) != 0) {
 753                 prterr("doflush: munmap");
 754                 report_failure(204);
 755         }
 756 }
 757
 758 void
 759 doread(unsigned offset, unsigned size)
 760 {
 761         off_t ret;
 762         unsigned iret;
 763
 764         offset -= offset % readbdy;
 765         if (o_direct)
 766                 size -= size % readbdy;
 767         if (size == 0) {
 768                 if (!quiet && testcalls > simulatedopcount && !o_direct)
 769                         prt("skipping zero size read\n");
 770                 log4(OP_READ, offset, size, FL_SKIPPED);
 771                 return;
 772         }
 773         if (size + offset > file_size) {
 774                 if (!quiet && testcalls > simulatedopcount)
 775                         prt("skipping seek/read past end of file\n");
 776                 log4(OP_READ, offset, size, FL_SKIPPED);
 777                 return;
 778         }
 779
 780         log4(OP_READ, offset, size, FL_NONE);
 781
 782         if (testcalls <= simulatedopcount)
 783                 return;
 784
 785         if (!quiet &&
 786                 ((progressinterval && testcalls % progressinterval == 0)  ||
 787                 (debug &&
 788                        (monitorstart == -1 ||
 789                         (offset + size > monitorstart &&
 790                         (monitorend == -1 || offset <= monitorend))))))
 791                 prt("%lu read\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 792                     offset, offset + size - 1, size);
 793         ret = lseek(fd, (off_t)offset, SEEK_SET);
 794         if (ret == (off_t)-1) {
 795                 prterr("doread: lseek");
 796                 report_failure(140);
 797         }
 798         iret = fsxread(fd, temp_buf, size, offset);
 799         if (iret != size) {
 800                 if (iret == -1)
 801                         prterr("doread: read");
 802                 else
 803                         prt("short read: 0x%x bytes instead of 0x%x\n",
 804                             iret, size);
 805                 report_failure(141);
 806         }
 807         check_buffers(temp_buf, offset, size);
 808 }
 809
 810 void
 811 check_eofpage(char *s, unsigned offset, char *p, int size)
 812 {
 813         unsigned long last_page, should_be_zero;
 814
 815         if (offset + size <= (file_size & ~page_mask))
 816                 return;
 817         /*
 818          * we landed in the last page of the file
 819          * test to make sure the VM system provided 0's
 820          * beyond the true end of the file mapping
 821          * (as required by mmap def in 1996 posix 1003.1)
 822          */
 823         last_page = ((unsigned long)p + (offset & page_mask) + size) & ~page_mask;
 824
 825         for (should_be_zero = last_page + (file_size & page_mask);
 826              should_be_zero < last_page + page_size;
 827              should_be_zero++)
 828                 if (*(char *)should_be_zero) {
 829                         prt("Mapped %s: non-zero data past EOF (0x%llx) page offset 0x%x is 0x%04x\n",
 830                             s, file_size - 1, should_be_zero & page_mask,
 831                             short_at(should_be_zero));
 832                         report_failure(205);
 833                 }
 834 }
 835
 836 void
 837 check_contents(void)
 838 {
 839         static char *check_buf;
 840         unsigned offset = 0;
 841         unsigned size = file_size;
 842         unsigned map_offset;
 843         unsigned map_size;
 844         char *p;
 845         off_t ret;
 846         unsigned iret;
 847
 848         if (!check_buf) {
 849                 check_buf = (char *) malloc(maxfilelen + writebdy);
 850                 assert(check_buf != NULL);
 851                 check_buf = round_ptr_up(check_buf, writebdy, 0);
 852                 memset(check_buf, '\0', maxfilelen);
 853         }
 854
 855         if (o_direct)
 856                 size -= size % readbdy;
 857         if (size == 0)
 858                 return;
 859
 860         ret = lseek(fd, (off_t)offset, SEEK_SET);
 861         if (ret == (off_t)-1) {
 862                 prterr("doread: lseek");
 863                 report_failure(140);
 864         }
 865
 866         iret = fsxread(fd, check_buf, size, offset);
 867         if (iret != size) {
 868                 if (iret == -1)
 869                         prterr("check_contents: read");
 870                 else
 871                         prt("short check read: 0x%x bytes instead of 0x%x\n",
 872                             iret, size);
 873                 report_failure(141);
 874         }
 875         check_buffers(check_buf, offset, size);
 876
 877         /* Map eof page, check it */
 878         map_offset = size - (size & PAGE_MASK);
 879         if (map_offset == size)
 880                 map_offset -= PAGE_SIZE;
 881         map_size  = size - map_offset;
 882
 883         p = mmap(0, map_size, PROT_READ, MAP_SHARED, fd, map_offset);
 884         if (p == MAP_FAILED) {
 885                 prterr("check_contents: mmap");
 886                 report_failure(190);
 887         }
 888         check_eofpage("check_contents", map_offset, p, map_size);
 889
 890         if (munmap(p, map_size) != 0) {
 891                 prterr("check_contents: munmap");
 892                 report_failure(191);
 893         }
 894 }
 895
 896 void
 897 domapread(unsigned offset, unsigned size)
 898 {
 899         unsigned pg_offset;
 900         unsigned map_size;
 901         char    *p;
 902
 903         offset -= offset % readbdy;
 904         if (size == 0) {
 905                 if (!quiet && testcalls > simulatedopcount)
 906                         prt("skipping zero size read\n");
 907                 log4(OP_MAPREAD, offset, size, FL_SKIPPED);
 908                 return;
 909         }
 910         if (size + offset > file_size) {
 911                 if (!quiet && testcalls > simulatedopcount)
 912                         prt("skipping seek/read past end of file\n");
 913                 log4(OP_MAPREAD, offset, size, FL_SKIPPED);
 914                 return;
 915         }
 916
 917         log4(OP_MAPREAD, offset, size, FL_NONE);
 918
 919         if (testcalls <= simulatedopcount)
 920                 return;
 921
 922         if (!quiet &&
 923                 ((progressinterval && testcalls % progressinterval == 0) ||
 924                        (debug &&
 925                        (monitorstart == -1 ||
 926                         (offset + size > monitorstart &&
 927                         (monitorend == -1 || offset <= monitorend))))))
 928                 prt("%lu mapread\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
 929                     offset, offset + size - 1, size);
 930
 931         pg_offset = offset & PAGE_MASK;
 932         map_size  = pg_offset + size;
 933
 934         if ((p = (char *)mmap(0, map_size, PROT_READ, MAP_SHARED, fd,
 935                               (off_t)(offset - pg_offset))) == (char *)-1) {
 936                 prterr("domapread: mmap");
 937                 report_failure(190);
 938         }
 939         memcpy(temp_buf, p + pg_offset, size);
 940
 941         check_eofpage("Read", offset, p, size);
 942
 943         if (munmap(p, map_size) != 0) {
 944                 prterr("domapread: munmap");
 945                 report_failure(191);
 946         }
 947
 948         check_buffers(temp_buf, offset, size);
 949 }
 950
 951
 952 void
 953 gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
 954 {
 955         while (size--) {
 956                 if (filldata) {
 957                         good_buf[offset] = filldata;
 958                 } else {
 959                         good_buf[offset] = testcalls % 256;
 960                         if (offset % 2)
 961                                 good_buf[offset] += original_buf[offset];
 962                 }
 963                 offset++;
 964         }
 965 }
 966
 967
 968 void
 969 dowrite(unsigned offset, unsigned size)
 970 {
 971         off_t ret;
 972         unsigned iret;
 973
 974         offset -= offset % writebdy;
 975         if (o_direct)
 976                 size -= size % writebdy;
 977         if (size == 0) {
 978                 if (!quiet && testcalls > simulatedopcount && !o_direct)
 979                         prt("skipping zero size write\n");
 980                 log4(OP_WRITE, offset, size, FL_SKIPPED);
 981                 return;
 982         }
 983
 984         log4(OP_WRITE, offset, size, FL_NONE);
 985
 986         gendata(original_buf, good_buf, offset, size);
 987         if (file_size < offset + size) {
 988                 if (file_size < offset)
 989                         memset(good_buf + file_size, '\0', offset - file_size);
 990                 file_size = offset + size;
 991                 if (lite) {
 992                         warn("Lite file size bug in fsx!");
 993                         report_failure(149);
 994                 }
 995         }
 996
 997         if (testcalls <= simulatedopcount)
 998                 return;
 999
1000         if (!quiet &&
1001                 ((progressinterval && testcalls % progressinterval == 0) ||
1002                        (debug &&
1003                        (monitorstart == -1 ||
1004                         (offset + size > monitorstart &&
1005                         (monitorend == -1 || offset <= monitorend))))))
1006                 prt("%lu write\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
1007                     offset, offset + size - 1, size);
1008         ret = lseek(fd, (off_t)offset, SEEK_SET);
1009         if (ret == (off_t)-1) {
1010                 prterr("dowrite: lseek");
1011                 report_failure(150);
1012         }
1013         iret = fsxwrite(fd, good_buf + offset, size, offset);
1014         if (iret != size) {
1015                 if (iret == -1)
1016                         prterr("dowrite: write");
1017                 else
1018                         prt("short write: 0x%x bytes instead of 0x%x\n",
1019                             iret, size);
1020                 report_failure(151);
1021         }
1022         if (do_fsync) {
1023                 if (fsync(fd)) {
1024                         prt("fsync() failed: %s\n", strerror(errno));
1025                         report_failure(152);
1026                 }
1027         }
1028         if (flush) {
1029                 doflush(offset, size);
1030         }
1031 }
1032
1033
1034 void
1035 domapwrite(unsigned offset, unsigned size)
1036 {
1037         unsigned pg_offset;
1038         unsigned map_size;
1039         off_t    cur_filesize;
1040         char    *p;
1041
1042         offset -= offset % writebdy;
1043         if (size == 0) {
1044                 if (!quiet && testcalls > simulatedopcount)
1045                         prt("skipping zero size write\n");
1046                 log4(OP_MAPWRITE, offset, size, FL_SKIPPED);
1047                 return;
1048         }
1049         cur_filesize = file_size;
1050
1051         log4(OP_MAPWRITE, offset, size, FL_NONE);
1052
1053         gendata(original_buf, good_buf, offset, size);
1054         if (file_size < offset + size) {
1055                 if (file_size < offset)
1056                         memset(good_buf + file_size, '\0', offset - file_size);
1057                 file_size = offset + size;
1058                 if (lite) {
1059                         warn("Lite file size bug in fsx!");
1060                         report_failure(200);
1061                 }
1062         }
1063
1064         if (testcalls <= simulatedopcount)
1065                 return;
1066
1067         if (!quiet &&
1068                 ((progressinterval && testcalls % progressinterval == 0) ||
1069                        (debug &&
1070                        (monitorstart == -1 ||
1071                         (offset + size > monitorstart &&
1072                         (monitorend == -1 || offset <= monitorend))))))
1073                 prt("%lu mapwrite\t0x%x thru\t0x%x\t(0x%x bytes)\n", testcalls,
1074                     offset, offset + size - 1, size);
1075
1076         if (file_size > cur_filesize) {
1077                 if (ftruncate(fd, file_size) == -1) {
1078                         prterr("domapwrite: ftruncate");
1079                         exit(201);
1080                 }
1081         }
1082         pg_offset = offset & PAGE_MASK;
1083         map_size  = pg_offset + size;
1084
1085         if ((p = (char *)mmap(0, map_size, PROT_READ | PROT_WRITE,
1086                               MAP_FILE | MAP_SHARED, fd,
1087                               (off_t)(offset - pg_offset))) == (char *)-1) {
1088                 prterr("domapwrite: mmap");
1089                 report_failure(202);
1090         }
1091         memcpy(p + pg_offset, good_buf + offset, size);
1092         if (msync(p, map_size, MS_SYNC) != 0) {
1093                 prterr("domapwrite: msync");
1094                 report_failure(203);
1095         }
1096
1097         check_eofpage("Write", offset, p, size);
1098
1099         if (munmap(p, map_size) != 0) {
1100                 prterr("domapwrite: munmap");
1101                 report_failure(204);
1102         }
1103 }
1104
1105
1106 void
1107 dotruncate(unsigned size)
1108 {
1109         int oldsize = file_size;
1110
1111         size -= size % truncbdy;
1112         if (size > biggest) {
1113                 biggest = size;
1114                 if (!quiet && testcalls > simulatedopcount)
1115                         prt("truncating to largest ever: 0x%x\n", size);
1116         }
1117
1118         log4(OP_TRUNCATE, 0, size, FL_NONE);
1119
1120         if (size > file_size)
1121                 memset(good_buf + file_size, '\0', size - file_size);
1122         file_size = size;
1123
1124         if (testcalls <= simulatedopcount)
1125                 return;
1126
1127         if ((progressinterval && testcalls % progressinterval == 0) ||
1128             (debug && (monitorstart == -1 || monitorend == -1 ||
1129                       size <= monitorend)))
1130                 prt("%lu trunc\tfrom 0x%x to 0x%x\n", testcalls, oldsize, size);
1131         if (ftruncate(fd, (off_t)size) == -1) {
1132                 prt("ftruncate1: %x\n", size);
1133                 prterr("dotruncate: ftruncate");
1134                 report_failure(160);
1135         }
1136 }
1137
1138 #ifdef FALLOC_FL_PUNCH_HOLE
1139 void
1140 do_punch_hole(unsigned offset, unsigned length)
1141 {
1142         unsigned end_offset;
1143         int max_offset = 0;
1144         int max_len = 0;
1145         int mode = FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE;
1146
1147         if (length == 0) {
1148                 if (!quiet && testcalls > simulatedopcount)
1149                         prt("skipping zero length punch hole\n");
1150                 log4(OP_PUNCH_HOLE, offset, length, FL_SKIPPED);
1151                 return;
1152         }
1153
1154         if (file_size <= (loff_t)offset) {
1155                 if (!quiet && testcalls > simulatedopcount)
1156                         prt("skipping hole punch off the end of the file\n");
1157                 log4(OP_PUNCH_HOLE, offset, length, FL_SKIPPED);
1158                 return;
1159         }
1160
1161         end_offset = offset + length;
1162
1163         log4(OP_PUNCH_HOLE, offset, length, FL_NONE);
1164
1165         if (testcalls <= simulatedopcount)
1166                 return;
1167
1168         if ((progressinterval && testcalls % progressinterval == 0) ||
1169             (debug && (monitorstart == -1 || monitorend == -1 ||
1170                       end_offset <= monitorend))) {
1171                 prt("%lu punch\tfrom 0x%x to 0x%x, (0x%x bytes)\n", testcalls,
1172                         offset, offset+length, length);
1173         }
1174         if (fallocate(fd, mode, (loff_t)offset, (loff_t)length) == -1) {
1175                 prt("punch hole: 0x%x to 0x%x\n", offset, offset + length);
1176                 prterr("do_punch_hole: fallocate");
1177                 report_failure(161);
1178         }
1179
1180
1181         max_offset = offset < file_size ? offset : file_size;
1182         max_len = max_offset + length <= file_size ? length :
1183                         file_size - max_offset;
1184         memset(good_buf + max_offset, '\0', max_len);
1185 }
1186
1187 #else
1188 void
1189 do_punch_hole(unsigned offset, unsigned length)
1190 {
1191         return;
1192 }
1193 #endif
1194
1195 #ifdef FALLOC_FL_ZERO_RANGE
1196 void
1197 do_zero_range(unsigned offset, unsigned length, int keep_size)
1198 {
1199         unsigned end_offset;
1200         int mode = FALLOC_FL_ZERO_RANGE;
1201
1202         if (length == 0) {
1203                 if (!quiet && testcalls > simulatedopcount)
1204                         prt("skipping zero length zero range\n");
1205                 log4(OP_ZERO_RANGE, offset, length, FL_SKIPPED |
1206                      (keep_size ? FL_KEEP_SIZE : FL_NONE));
1207                 return;
1208         }
1209
1210         end_offset = keep_size ? 0 : offset + length;
1211
1212         if (end_offset > biggest) {
1213                 biggest = end_offset;
1214                 if (!quiet && testcalls > simulatedopcount)
1215                         prt("zero_range to largest ever: 0x%x\n", end_offset);
1216         }
1217
1218         /*
1219          * last arg matches fallocate string array index in logdump:
1220          *      0: allocate past EOF
1221          *      1: extending prealloc
1222          *      2: interior prealloc
1223          */
1224         log4(OP_ZERO_RANGE, offset, length,
1225              keep_size ? FL_KEEP_SIZE : FL_NONE);
1226
1227         if (testcalls <= simulatedopcount)
1228                 return;
1229
1230         if ((progressinterval && testcalls % progressinterval == 0) ||
1231             (debug && (monitorstart == -1 || monitorend == -1 ||
1232                       end_offset <= monitorend))) {
1233                 prt("%lu zero\tfrom 0x%x to 0x%x, (0x%x bytes)\n", testcalls,
1234                         offset, offset+length, length);
1235         }
1236         if (fallocate(fd, mode, (loff_t)offset, (loff_t)length) == -1) {
1237                 prt("zero range: 0x%x to 0x%x\n", offset, offset + length);
1238                 prterr("do_zero_range: fallocate");
1239                 report_failure(161);
1240         }
1241
1242         memset(good_buf + offset, '\0', length);
1243 }
1244
1245 #else
1246 void
1247 do_zero_range(unsigned offset, unsigned length, int keep_size)
1248 {
1249         return;
1250 }
1251 #endif
1252
1253 #ifdef FALLOC_FL_COLLAPSE_RANGE
1254 void
1255 do_collapse_range(unsigned offset, unsigned length)
1256 {
1257         unsigned end_offset;
1258         int mode = FALLOC_FL_COLLAPSE_RANGE;
1259
1260         if (length == 0) {
1261                 if (!quiet && testcalls > simulatedopcount)
1262                         prt("skipping zero length collapse range\n");
1263                 log4(OP_COLLAPSE_RANGE, offset, length, FL_SKIPPED);
1264                 return;
1265         }
1266
1267         end_offset = offset + length;
1268         if ((loff_t)end_offset >= file_size) {
1269                 if (!quiet && testcalls > simulatedopcount)
1270                         prt("skipping collapse range behind EOF\n");
1271                 log4(OP_COLLAPSE_RANGE, offset, length, FL_SKIPPED);
1272                 return;
1273         }
1274
1275         log4(OP_COLLAPSE_RANGE, offset, length, FL_NONE);
1276
1277         if (testcalls <= simulatedopcount)
1278                 return;
1279
1280         if ((progressinterval && testcalls % progressinterval == 0) ||
1281             (debug && (monitorstart == -1 || monitorend == -1 ||
1282                       end_offset <= monitorend))) {
1283                 prt("%lu collapse\tfrom 0x%x to 0x%x, (0x%x bytes)\n", testcalls,
1284                         offset, offset+length, length);
1285         }
1286         if (fallocate(fd, mode, (loff_t)offset, (loff_t)length) == -1) {
1287                 prt("collapse range: 0x%x to 0x%x\n", offset, offset + length);
1288                 prterr("do_collapse_range: fallocate");
1289                 report_failure(161);
1290         }
1291
1292         memmove(good_buf + offset, good_buf + end_offset,
1293                 file_size - end_offset);
1294         file_size -= length;
1295 }
1296
1297 #else
1298 void
1299 do_collapse_range(unsigned offset, unsigned length)
1300 {
1301         return;
1302 }
1303 #endif
1304
1305 #ifdef FALLOC_FL_INSERT_RANGE
1306 void
1307 do_insert_range(unsigned offset, unsigned length)
1308 {
1309         unsigned end_offset;
1310         int mode = FALLOC_FL_INSERT_RANGE;
1311
1312         if (length == 0) {
1313                 if (!quiet && testcalls > simulatedopcount)
1314                         prt("skipping zero length insert range\n");
1315                 log4(OP_INSERT_RANGE, offset, length, FL_SKIPPED);
1316                 return;
1317         }
1318
1319         if ((loff_t)offset >= file_size) {
1320                 if (!quiet && testcalls > simulatedopcount)
1321                         prt("skipping insert range behind EOF\n");
1322                 log4(OP_INSERT_RANGE, offset, length, FL_SKIPPED);
1323                 return;
1324         }
1325
1326         log4(OP_INSERT_RANGE, offset, length, FL_NONE);
1327
1328         if (testcalls <= simulatedopcount)
1329                 return;
1330
1331         end_offset = offset + length;
1332         if ((progressinterval && testcalls % progressinterval == 0) ||
1333             (debug && (monitorstart == -1 || monitorend == -1 ||
1334                       end_offset <= monitorend))) {
1335                 prt("%lu insert\tfrom 0x%x to 0x%x, (0x%x bytes)\n", testcalls,
1336                         offset, offset+length, length);
1337         }
1338         if (fallocate(fd, mode, (loff_t)offset, (loff_t)length) == -1) {
1339                 prt("insert range: 0x%x to 0x%x\n", offset, offset + length);
1340                 prterr("do_insert_range: fallocate");
1341                 report_failure(161);
1342         }
1343
1344         memmove(good_buf + end_offset, good_buf + offset,
1345                 file_size - offset);
1346         memset(good_buf + offset, '\0', length);
1347         file_size += length;
1348 }
1349
1350 #else
1351 void
1352 do_insert_range(unsigned offset, unsigned length)
1353 {
1354         return;
1355 }
1356 #endif
1357
1358 #ifdef FICLONERANGE
1359 int
1360 test_clone_range(void)
1361 {
1362         struct file_clone_range fcr = {
1363                 .src_fd = fd,
1364         };
1365
1366         if (ioctl(fd, FICLONERANGE, &fcr) &&
1367             (errno == EOPNOTSUPP || errno == ENOTTY)) {
1368                 if (!quiet)
1369                         fprintf(stderr,
1370                                 "main: filesystem does not support "
1371                                 "clone range, disabling!\n");
1372                 return 0;
1373         }
1374
1375         return 1;
1376 }
1377
1378 void
1379 do_clone_range(unsigned offset, unsigned length, unsigned dest)
1380 {
1381         struct file_clone_range fcr = {
1382                 .src_fd = fd,
1383                 .src_offset = offset,
1384                 .src_length = length,
1385                 .dest_offset = dest,
1386         };
1387
1388         if (length == 0) {
1389                 if (!quiet && testcalls > simulatedopcount)
1390                         prt("skipping zero length clone range\n");
1391                 log5(OP_CLONE_RANGE, offset, length, dest, FL_SKIPPED);
1392                 return;
1393         }
1394
1395         if ((loff_t)offset >= file_size) {
1396                 if (!quiet && testcalls > simulatedopcount)
1397                         prt("skipping clone range behind EOF\n");
1398                 log5(OP_CLONE_RANGE, offset, length, dest, FL_SKIPPED);
1399                 return;
1400         }
1401
1402         if (dest + length > biggest) {
1403                 biggest = dest + length;
1404                 if (!quiet && testcalls > simulatedopcount)
1405                         prt("cloning to largest ever: 0x%x\n", dest + length);
1406         }
1407
1408         log5(OP_CLONE_RANGE, offset, length, dest, FL_NONE);
1409
1410         if (testcalls <= simulatedopcount)
1411                 return;
1412
1413         if ((progressinterval && testcalls % progressinterval == 0) ||
1414             (debug && (monitorstart == -1 || monitorend == -1 ||
1415                        dest <= monitorstart || dest + length <= monitorend))) {
1416                 prt("%lu clone\tfrom 0x%x to 0x%x, (0x%x bytes) at 0x%x\n",
1417                         testcalls, offset, offset+length, length, dest);
1418         }
1419
1420         if (ioctl(fd, FICLONERANGE, &fcr) == -1) {
1421                 prt("clone range: 0x%x to 0x%x at 0x%x\n", offset,
1422                                 offset + length, dest);
1423                 prterr("do_clone_range: FICLONERANGE");
1424                 report_failure(161);
1425         }
1426
1427         memcpy(good_buf + dest, good_buf + offset, length);
1428         if (dest > file_size)
1429                 memset(good_buf + file_size, '\0', dest - file_size);
1430         if (dest + length > file_size)
1431                 file_size = dest + length;
1432 }
1433
1434 #else
1435 int
1436 test_clone_range(void)
1437 {
1438         return 0;
1439 }
1440
1441 void
1442 do_clone_range(unsigned offset, unsigned length, unsigned dest)
1443 {
1444         return;
1445 }
1446 #endif
1447
1448 #ifdef FIDEDUPERANGE
1449 int
1450 test_dedupe_range(void)
1451 {
1452         struct file_dedupe_range *fdr;
1453         off_t new_len;
1454         int error;
1455         int ret = 1;
1456
1457         /* Alloc memory */
1458         fdr = calloc(sizeof(struct file_dedupe_range_info) +
1459                      sizeof(struct file_dedupe_range), 1);
1460         if (!fdr) {
1461                 prterr("do_dedupe_range: malloc");
1462                 report_failure(161);
1463         }
1464
1465         /* Make sure we have at least two blocks */
1466         new_len = block_size * 2;
1467         if (file_size < new_len && ftruncate(fd, new_len)) {
1468                 warn("main: ftruncate");
1469                 exit(132);
1470         }
1471
1472         /* Try to dedupe them */
1473         fdr->src_length = block_size;
1474         fdr->dest_count = 1;
1475         fdr->info[0].dest_fd = fd;
1476         fdr->info[0].dest_offset = block_size;
1477
1478         if (ioctl(fd, FIDEDUPERANGE, fdr))
1479                 error = errno;
1480         else if (fdr->info[0].status < 0)
1481                 error = -fdr->info[0].status;
1482         else
1483                 error = 0;
1484
1485         /* Older kernels may return EINVAL... */
1486         if (error == EOPNOTSUPP || error == ENOTTY || error == EINVAL) {
1487                 if (!quiet)
1488                         fprintf(stderr,
1489                                 "main: filesystem does not support "
1490                                 "dedupe range, disabling!\n");
1491                 ret = 0;
1492         }
1493
1494         /* Put the file back the way it was. */
1495         if (file_size < new_len && ftruncate(fd, file_size)) {
1496                 warn("main: ftruncate");
1497                 exit(132);
1498         }
1499
1500         free(fdr);
1501         return ret;
1502 }
1503
1504 void
1505 do_dedupe_range(unsigned offset, unsigned length, unsigned dest)
1506 {
1507         struct file_dedupe_range *fdr;
1508
1509         if (length == 0) {
1510                 if (!quiet && testcalls > simulatedopcount)
1511                         prt("skipping zero length dedupe range\n");
1512                 log5(OP_DEDUPE_RANGE, offset, length, dest, FL_SKIPPED);
1513                 return;
1514         }
1515
1516         if ((loff_t)offset >= file_size) {
1517                 if (!quiet && testcalls > simulatedopcount)
1518                         prt("skipping dedupe range behind EOF\n");
1519                 log5(OP_DEDUPE_RANGE, offset, length, dest, FL_SKIPPED);
1520                 return;
1521         }
1522
1523         log5(OP_DEDUPE_RANGE, offset, length, dest, FL_NONE);
1524
1525         if (testcalls <= simulatedopcount)
1526                 return;
1527
1528         if ((progressinterval && testcalls % progressinterval == 0) ||
1529             (debug && (monitorstart == -1 || monitorend == -1 ||
1530                        dest <= monitorstart || dest + length <= monitorend))) {
1531                 prt("%lu dedupe\tfrom 0x%x to 0x%x, (0x%x bytes) at 0x%x\n",
1532                         testcalls, offset, offset+length, length, dest);
1533         }
1534
1535         /* Alloc memory */
1536         fdr = calloc(sizeof(struct file_dedupe_range_info) +
1537                      sizeof(struct file_dedupe_range), 1);
1538         if (!fdr) {
1539                 prterr("do_dedupe_range: malloc");
1540                 report_failure(161);
1541         }
1542
1543         /* Dedupe data blocks */
1544         fdr->src_offset = offset;
1545         fdr->src_length = length;
1546         fdr->dest_count = 1;
1547         fdr->info[0].dest_fd = fd;
1548         fdr->info[0].dest_offset = dest;
1549
1550         if (ioctl(fd, FIDEDUPERANGE, fdr) == -1) {
1551                 prt("dedupe range: 0x%x to 0x%x at 0x%x\n", offset,
1552                                 offset + length, dest);
1553                 prterr("do_dedupe_range(0): FIDEDUPERANGE");
1554                 report_failure(161);
1555         } else if (fdr->info[0].status < 0) {
1556                 errno = -fdr->info[0].status;
1557                 prt("dedupe range: 0x%x to 0x%x at 0x%x\n", offset,
1558                                 offset + length, dest);
1559                 prterr("do_dedupe_range(1): FIDEDUPERANGE");
1560                 report_failure(161);
1561         }
1562
1563         free(fdr);
1564 }
1565
1566 #else
1567 int
1568 test_dedupe_range(void)
1569 {
1570         return 0;
1571 }
1572
1573 void
1574 do_dedupe_range(unsigned offset, unsigned length, unsigned dest)
1575 {
1576         return;
1577 }
1578 #endif
1579
1580 #ifdef HAVE_COPY_FILE_RANGE
1581 int
1582 test_copy_range(void)
1583 {
1584         loff_t o1 = 0, o2 = 1;
1585
1586         if (syscall(__NR_copy_file_range, fd, &o1, fd, &o2, 1, 0) == -1 &&
1587             (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTTY)) {
1588                 if (!quiet)
1589                         fprintf(stderr,
1590                                 "main: filesystem does not support "
1591                                 "copy range, disabling!\n");
1592                 return 0;
1593         }
1594
1595         return 1;
1596 }
1597
1598 void
1599 do_copy_range(unsigned offset, unsigned length, unsigned dest)
1600 {
1601         loff_t o1, o2;
1602         size_t olen;
1603         ssize_t nr;
1604         int tries = 0;
1605
1606         if (length == 0) {
1607                 if (!quiet && testcalls > simulatedopcount)
1608                         prt("skipping zero length copy range\n");
1609                 log5(OP_COPY_RANGE, offset, length, dest, FL_SKIPPED);
1610                 return;
1611         }
1612
1613         if ((loff_t)offset >= file_size) {
1614                 if (!quiet && testcalls > simulatedopcount)
1615                         prt("skipping copy range behind EOF\n");
1616                 log5(OP_COPY_RANGE, offset, length, dest, FL_SKIPPED);
1617                 return;
1618         }
1619
1620         if (dest + length > biggest) {
1621                 biggest = dest + length;
1622                 if (!quiet && testcalls > simulatedopcount)
1623                         prt("copying to largest ever: 0x%x\n", dest + length);
1624         }
1625
1626         log5(OP_COPY_RANGE, offset, length, dest, FL_NONE);
1627
1628         if (testcalls <= simulatedopcount)
1629                 return;
1630
1631         if ((progressinterval && testcalls % progressinterval == 0) ||
1632             (debug && (monitorstart == -1 || monitorend == -1 ||
1633                        dest <= monitorstart || dest + length <= monitorend))) {
1634                 prt("%lu copy\tfrom 0x%x to 0x%x, (0x%x bytes) at 0x%x\n",
1635                         testcalls, offset, offset+length, length, dest);
1636         }
1637
1638         o1 = offset;
1639         o2 = dest;
1640         olen = length;
1641
1642         while (olen > 0) {
1643                 nr = syscall(__NR_copy_file_range, fd, &o1, fd, &o2, olen, 0);
1644                 if (nr < 0) {
1645                         if (errno != EAGAIN || tries++ >= 300)
1646                                 break;
1647                 } else if (nr > olen) {
1648                         prt("copy range: 0x%x to 0x%x at 0x%x\n", offset,
1649                                         offset + length, dest);
1650                         prt("do_copy_range: asked %u, copied %u??\n",
1651                                         nr, olen);
1652                         report_failure(161);
1653                 } else if (nr > 0)
1654                         olen -= nr;
1655         }
1656         if (nr < 0) {
1657                 prt("copy range: 0x%x to 0x%x at 0x%x\n", offset,
1658                                 offset + length, dest);
1659                 prterr("do_copy_range:");
1660                 report_failure(161);
1661         }
1662
1663         memcpy(good_buf + dest, good_buf + offset, length);
1664         if (dest > file_size)
1665                 memset(good_buf + file_size, '\0', dest - file_size);
1666         if (dest + length > file_size)
1667                 file_size = dest + length;
1668 }
1669
1670 #else
1671 int
1672 test_copy_range(void)
1673 {
1674         return 0;
1675 }
1676
1677 void
1678 do_copy_range(unsigned offset, unsigned length, unsigned dest)
1679 {
1680         return;
1681 }
1682 #endif
1683
1684 #ifdef HAVE_LINUX_FALLOC_H
1685 /* fallocate is basically a no-op unless extending, then a lot like a truncate */
1686 void
1687 do_preallocate(unsigned offset, unsigned length, int keep_size)
1688 {
1689         unsigned end_offset;
1690
1691         if (length == 0) {
1692                 if (!quiet && testcalls > simulatedopcount)
1693                         prt("skipping zero length fallocate\n");
1694                 log4(OP_FALLOCATE, offset, length, FL_SKIPPED |
1695                      (keep_size ? FL_KEEP_SIZE : FL_NONE));
1696                 return;
1697         }
1698
1699         end_offset = keep_size ? 0 : offset + length;
1700
1701         if (end_offset > biggest) {
1702                 biggest = end_offset;
1703                 if (!quiet && testcalls > simulatedopcount)
1704                         prt("fallocating to largest ever: 0x%x\n", end_offset);
1705         }
1706
1707         /*
1708          * last arg matches fallocate string array index in logdump:
1709          *      0: allocate past EOF
1710          *      1: extending prealloc
1711          *      2: interior prealloc
1712          */
1713         log4(OP_FALLOCATE, offset, length,
1714              keep_size ? FL_KEEP_SIZE : FL_NONE);
1715
1716         if (end_offset > file_size) {
1717                 memset(good_buf + file_size, '\0', end_offset - file_size);
1718                 file_size = end_offset;
1719         }
1720
1721         if (testcalls <= simulatedopcount)
1722                 return;
1723
1724         if ((progressinterval && testcalls % progressinterval == 0) ||
1725             (debug && (monitorstart == -1 || monitorend == -1 ||
1726                       end_offset <= monitorend)))
1727                 prt("%lu falloc\tfrom 0x%x to 0x%x (0x%x bytes)\n", testcalls,
1728                                 offset, offset + length, length);
1729         if (fallocate(fd, keep_size ? FALLOC_FL_KEEP_SIZE : 0, (loff_t)offset, (loff_t)length) == -1) {
1730                 prt("fallocate: 0x%x to 0x%x\n", offset, offset + length);
1731                 prterr("do_preallocate: fallocate");
1732                 report_failure(161);
1733         }
1734 }
1735 #else
1736 void
1737 do_preallocate(unsigned offset, unsigned length, int keep_size)
1738 {
1739         return;
1740 }
1741 #endif
1742
1743 void
1744 writefileimage()
1745 {
1746         ssize_t iret;
1747
1748         if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) {
1749                 prterr("writefileimage: lseek");
1750                 report_failure(171);
1751         }
1752         iret = write(fd, good_buf, file_size);
1753         if ((off_t)iret != file_size) {
1754                 if (iret == -1)
1755                         prterr("writefileimage: write");
1756                 else
1757                         prt("short write: 0x%x bytes instead of 0x%llx\n",
1758                             iret, (unsigned long long)file_size);
1759                 report_failure(172);
1760         }
1761         if (lite ? 0 : ftruncate(fd, file_size) == -1) {
1762                 prt("ftruncate2: %llx\n", (unsigned long long)file_size);
1763                 prterr("writefileimage: ftruncate");
1764                 report_failure(173);
1765         }
1766 }
1767
1768
1769 void
1770 docloseopen(void)
1771 {
1772         if (testcalls <= simulatedopcount)
1773                 return;
1774
1775         if (debug)
1776                 prt("%lu close/open\n", testcalls);
1777         if (close(fd)) {
1778                 prterr("docloseopen: close");
1779                 report_failure(180);
1780         }
1781         if (system("echo 3 > /proc/sys/vm/drop_caches")) {
1782                 prterr("docloseopen: drop_caches");
1783                 report_failure(181);
1784         }
1785         fd = open(fname, O_RDWR|o_direct, 0);
1786         if (fd < 0) {
1787                 prterr("docloseopen: open");
1788                 report_failure(182);
1789         }
1790 }
1791
1792 void
1793 dofsync(void)
1794 {
1795         int ret;
1796
1797         if (testcalls <= simulatedopcount)
1798                 return;
1799         if (debug)
1800                 prt("%lu fsync\n", testcalls);
1801         log4(OP_FSYNC, 0, 0, 0);
1802         ret = fsync(fd);
1803         if (ret < 0) {
1804                 prterr("dofsync");
1805                 report_failure(210);
1806         }
1807         mark_log();
1808         dump_fsync_buffer();
1809         mark_nr++;
1810 }
1811
1812 #define TRIM_OFF(off, size)                     \
1813 do {                                            \
1814         if (size)                               \
1815                 (off) %= (size);                \
1816         else                                    \
1817                 (off) = 0;                      \
1818 } while (0)
1819
1820 #define TRIM_LEN(off, len, size)                \
1821 do {                                            \
1822         if ((off) + (len) > (size))             \
1823                 (len) = (size) - (off);         \
1824 } while (0)
1825
1826 #define TRIM_OFF_LEN(off, len, size)            \
1827 do {                                            \
1828         TRIM_OFF(off, size);                    \
1829         TRIM_LEN(off, len, size);               \
1830 } while (0)
1831
1832 void
1833 cleanup(int sig)
1834 {
1835         if (sig)
1836                 prt("signal %d\n", sig);
1837         prt("testcalls = %lu\n", testcalls);
1838         exit(sig);
1839 }
1840
1841 static int
1842 op_args_count(int operation)
1843 {
1844         switch (operation) {
1845         case OP_CLONE_RANGE:
1846         case OP_DEDUPE_RANGE:
1847         case OP_COPY_RANGE:
1848                 return 4;
1849         default:
1850                 return 3;
1851         }
1852 }
1853
1854 static int
1855 read_op(struct log_entry *log_entry)
1856 {
1857         char line[256];
1858
1859         memset(log_entry, 0, sizeof(*log_entry));
1860         log_entry->operation = -1;
1861
1862         while (log_entry->operation == -1) {
1863                 char *str;
1864                 int i;
1865
1866                 do {
1867                         if (!fgets(line, sizeof(line), replayopsf)) {
1868                                 if (feof(replayopsf)) {
1869                                         replayopsf = NULL;
1870                                         return 0;
1871                                 }
1872                                 goto fail;
1873                         }
1874                         str = strtok(line, " \t\n");
1875                 } while (!str || str[0] == '#');
1876
1877                 if (strcmp(str, "skip") == 0) {
1878                         log_entry->flags |= FL_SKIPPED;
1879                         str = strtok(NULL, " \t\n");
1880                         if (!str)
1881                                 goto fail;
1882                 }
1883                 log_entry->operation = op_code(str);
1884                 if (log_entry->operation == -1)
1885                         goto fail;
1886                 log_entry->nr_args = op_args_count(log_entry->operation);
1887                 for (i = 0; i < log_entry->nr_args; i++) {
1888                         char *end;
1889
1890                         str = strtok(NULL, " \t\n");
1891                         if (!str)
1892                                 goto fail;
1893                         log_entry->args[i] = strtoul(str, &end, 0);
1894                         if (*end)
1895                                 goto fail;
1896                 }
1897                 while ((str = strtok(NULL, " \t\n"))) {
1898                         if (strcmp(str, "keep_size") == 0)
1899                                 log_entry->flags |= FL_KEEP_SIZE;
1900                         else if (strcmp(str, "close_open") == 0)
1901                                 log_entry->flags |= FL_CLOSE_OPEN;
1902                         else if (strcmp(str, "*") == 0)
1903                                 ;  /* overlap marker; ignore */
1904                         else
1905                                 goto fail;
1906                 }
1907         }
1908         return 1;
1909
1910 fail:
1911         fprintf(stderr, "%s: parse error\n", replayops);
1912         fclose(replayopsf);
1913         replayopsf = NULL;
1914         cleanup(100);  /* doesn't return */
1915         return 0;
1916 }
1917
1918 static inline bool
1919 range_overlaps(
1920         unsigned long   off0,
1921         unsigned long   off1,
1922         unsigned long   size)
1923 {
1924         return llabs((unsigned long long)off1 - off0) < size;
1925 }
1926
1927 int
1928 test(void)
1929 {
1930         unsigned long   offset, offset2;
1931         unsigned long   size;
1932         unsigned long   rv;
1933         unsigned long   op;
1934         int             keep_size = 0;
1935
1936         if (simulatedopcount > 0 && testcalls == simulatedopcount)
1937                 writefileimage();
1938
1939         testcalls++;
1940
1941         if (debugstart > 0 && testcalls >= debugstart)
1942                 debug = 1;
1943
1944         if (!quiet && testcalls < simulatedopcount && testcalls % 100000 == 0)
1945                 prt("%lu...\n", testcalls);
1946
1947         if (replayopsf) {
1948                 struct log_entry log_entry;
1949
1950                 while (read_op(&log_entry)) {
1951                         if (log_entry.flags & FL_SKIPPED) {
1952                                 log4(log_entry.operation,
1953                                      log_entry.args[0], log_entry.args[1],
1954                                      log_entry.flags);
1955                                 continue;
1956                         }
1957
1958                         op = log_entry.operation;
1959                         offset = log_entry.args[0];
1960                         size = log_entry.args[1];
1961                         offset2 = log_entry.args[2];
1962                         closeopen = !!(log_entry.flags & FL_CLOSE_OPEN);
1963                         keep_size = !!(log_entry.flags & FL_KEEP_SIZE);
1964                         goto have_op;
1965                 }
1966                 return 0;
1967         }
1968
1969         rv = random();
1970         if (closeprob)
1971                 closeopen = (rv >> 3) < (1 << 28) / closeprob;
1972
1973         offset = random();
1974         offset2 = 0;
1975         size = maxoplen;
1976         if (randomoplen)
1977                 size = random() % (maxoplen + 1);
1978
1979         /* calculate appropriate op to run */
1980         if (lite)
1981                 op = rv % OP_MAX_LITE;
1982         else if (!integrity)
1983                 op = rv % OP_MAX_FULL;
1984         else
1985                 op = rv % OP_MAX_INTEGRITY;
1986
1987         switch(op) {
1988         case OP_TRUNCATE:
1989                 if (!style)
1990                         size = random() % maxfilelen;
1991                 break;
1992         case OP_FALLOCATE:
1993                 if (fallocate_calls && size && keep_size_calls)
1994                         keep_size = random() % 2;
1995                 break;
1996         case OP_ZERO_RANGE:
1997                 if (zero_range_calls && size && keep_size_calls)
1998                         keep_size = random() % 2;
1999                 break;
2000         case OP_CLONE_RANGE:
2001                 TRIM_OFF_LEN(offset, size, file_size);
2002                 offset = offset & ~(block_size - 1);
2003                 size = size & ~(block_size - 1);
2004                 do {
2005                         offset2 = random();
2006                         TRIM_OFF(offset2, maxfilelen);
2007                         offset2 = offset2 & ~(block_size - 1);
2008                 } while (range_overlaps(offset, offset2, size) ||
2009                          offset2 + size > maxfilelen);
2010                 break;
2011         case OP_DEDUPE_RANGE:
2012                 {
2013                         int tries = 0;
2014
2015                         TRIM_OFF_LEN(offset, size, file_size);
2016                         offset = offset & ~(block_size - 1);
2017                         size = size & ~(block_size - 1);
2018                         do {
2019                                 if (tries++ >= 30) {
2020                                         size = 0;
2021                                         break;
2022                                 }
2023                                 offset2 = random();
2024                                 TRIM_OFF(offset2, file_size);
2025                                 offset2 = offset2 & ~(block_size - 1);
2026                         } while (range_overlaps(offset, offset2, size) ||
2027                                  offset2 + size > file_size);
2028                         break;
2029                 }
2030         case OP_COPY_RANGE:
2031                 TRIM_OFF_LEN(offset, size, file_size);
2032                 offset -= offset % readbdy;
2033                 if (o_direct)
2034                         size -= size % readbdy;
2035                 do {
2036                         offset2 = random();
2037                         TRIM_OFF(offset2, maxfilelen);
2038                         offset2 -= offset2 % writebdy;
2039                 } while (range_overlaps(offset, offset2, size) ||
2040                          offset2 + size > maxfilelen);
2041                 break;
2042         }
2043
2044 have_op:
2045
2046         switch (op) {
2047         case OP_MAPREAD:
2048                 if (!mapped_reads)
2049                         op = OP_READ;
2050                 break;
2051         case OP_MAPWRITE:
2052                 if (!mapped_writes)
2053                         op = OP_WRITE;
2054                 break;
2055         case OP_FALLOCATE:
2056                 if (!fallocate_calls) {
2057                         log4(OP_FALLOCATE, offset, size, FL_SKIPPED);
2058                         goto out;
2059                 }
2060                 break;
2061         case OP_PUNCH_HOLE:
2062                 if (!punch_hole_calls) {
2063                         log4(OP_PUNCH_HOLE, offset, size, FL_SKIPPED);
2064                         goto out;
2065                 }
2066                 break;
2067         case OP_ZERO_RANGE:
2068                 if (!zero_range_calls) {
2069                         log4(OP_ZERO_RANGE, offset, size, FL_SKIPPED);
2070                         goto out;
2071                 }
2072                 break;
2073         case OP_COLLAPSE_RANGE:
2074                 if (!collapse_range_calls) {
2075                         log4(OP_COLLAPSE_RANGE, offset, size, FL_SKIPPED);
2076                         goto out;
2077                 }
2078                 break;
2079         case OP_INSERT_RANGE:
2080                 if (!insert_range_calls) {
2081                         log4(OP_INSERT_RANGE, offset, size, FL_SKIPPED);
2082                         goto out;
2083                 }
2084                 break;
2085         case OP_CLONE_RANGE:
2086                 if (!clone_range_calls) {
2087                         log5(op, offset, size, offset2, FL_SKIPPED);
2088                         goto out;
2089                 }
2090                 break;
2091         case OP_DEDUPE_RANGE:
2092                 if (!dedupe_range_calls) {
2093                         log5(op, offset, size, offset2, FL_SKIPPED);
2094                         goto out;
2095                 }
2096                 break;
2097         case OP_COPY_RANGE:
2098                 if (!copy_range_calls) {
2099                         log5(op, offset, size, offset2, FL_SKIPPED);
2100                         goto out;
2101                 }
2102                 break;
2103         }
2104
2105         switch (op) {
2106         case OP_READ:
2107                 TRIM_OFF_LEN(offset, size, file_size);
2108                 doread(offset, size);
2109                 break;
2110
2111         case OP_WRITE:
2112                 TRIM_OFF_LEN(offset, size, maxfilelen);
2113                 dowrite(offset, size);
2114                 break;
2115
2116         case OP_MAPREAD:
2117                 TRIM_OFF_LEN(offset, size, file_size);
2118                 domapread(offset, size);
2119                 break;
2120
2121         case OP_MAPWRITE:
2122                 TRIM_OFF_LEN(offset, size, maxfilelen);
2123                 domapwrite(offset, size);
2124                 break;
2125
2126         case OP_TRUNCATE:
2127                 dotruncate(size);
2128                 break;
2129
2130         case OP_FALLOCATE:
2131                 TRIM_OFF_LEN(offset, size, maxfilelen);
2132                 do_preallocate(offset, size, keep_size);
2133                 break;
2134
2135         case OP_PUNCH_HOLE:
2136                 TRIM_OFF_LEN(offset, size, file_size);
2137                 do_punch_hole(offset, size);
2138                 break;
2139         case OP_ZERO_RANGE:
2140                 TRIM_OFF_LEN(offset, size, file_size);
2141                 do_zero_range(offset, size, keep_size);
2142                 break;
2143         case OP_COLLAPSE_RANGE:
2144                 TRIM_OFF_LEN(offset, size, file_size - 1);
2145                 offset = offset & ~(block_size - 1);
2146                 size = size & ~(block_size - 1);
2147                 if (size == 0) {
2148                         log4(OP_COLLAPSE_RANGE, offset, size, FL_SKIPPED);
2149                         goto out;
2150                 }
2151                 do_collapse_range(offset, size);
2152                 break;
2153         case OP_INSERT_RANGE:
2154                 TRIM_OFF(offset, file_size);
2155                 TRIM_LEN(file_size, size, maxfilelen);
2156                 offset = offset & ~(block_size - 1);
2157                 size = size & ~(block_size - 1);
2158                 if (size == 0) {
2159                         log4(OP_INSERT_RANGE, offset, size, FL_SKIPPED);
2160                         goto out;
2161                 }
2162                 if (file_size + size > maxfilelen) {
2163                         log4(OP_INSERT_RANGE, offset, size, FL_SKIPPED);
2164                         goto out;
2165                 }
2166
2167                 do_insert_range(offset, size);
2168                 break;
2169         case OP_CLONE_RANGE:
2170                 if (size == 0) {
2171                         log5(OP_CLONE_RANGE, offset, size, offset2, FL_SKIPPED);
2172                         goto out;
2173                 }
2174                 if (offset2 + size > maxfilelen) {
2175                         log5(OP_CLONE_RANGE, offset, size, offset2, FL_SKIPPED);
2176                         goto out;
2177                 }
2178
2179                 do_clone_range(offset, size, offset2);
2180                 break;
2181         case OP_DEDUPE_RANGE:
2182                 if (size == 0) {
2183                         log5(OP_DEDUPE_RANGE, offset, size, offset2, FL_SKIPPED);
2184                         goto out;
2185                 }
2186                 if (offset2 + size > maxfilelen) {
2187                         log5(OP_DEDUPE_RANGE, offset, size, offset2, FL_SKIPPED);
2188                         goto out;
2189                 }
2190
2191                 do_dedupe_range(offset, size, offset2);
2192                 break;
2193         case OP_COPY_RANGE:
2194                 if (size == 0) {
2195                         log5(OP_COPY_RANGE, offset, size, offset2, FL_SKIPPED);
2196                         goto out;
2197                 }
2198                 if (offset2 + size > maxfilelen) {
2199                         log5(OP_COPY_RANGE, offset, size, offset2, FL_SKIPPED);
2200                         goto out;
2201                 }
2202
2203                 do_copy_range(offset, size, offset2);
2204                 break;
2205         case OP_FSYNC:
2206                 dofsync();
2207                 break;
2208         default:
2209                 prterr("test: unknown operation");
2210                 report_failure(42);
2211                 break;
2212         }
2213
2214         if (check_file && testcalls > simulatedopcount)
2215                 check_contents();
2216
2217 out:
2218         if (closeopen)
2219                 docloseopen();
2220         if (sizechecks && testcalls > simulatedopcount)
2221                 check_size();
2222         return 1;
2223 }
2224
2225
2226 void
2227 usage(void)
2228 {
2229         fprintf(stdout, "usage: %s",
2230                 "fsx [-dknqxABEFJLOWZ] [-b opnum] [-c Prob] [-g filldata] [-i logdev] [-j logid] [-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\
2231         -b opnum: beginning operation number (default 1)\n\
2232         -c P: 1 in P chance of file close+open at each op (default infinity)\n\
2233         -d: debug output for all operations\n\
2234         -f flush and invalidate cache after I/O\n\
2235         -g X: write character X instead of random generated data\n\
2236         -i logdev: do integrity testing, logdev is the dm log writes device\n\
2237         -j logid: prefix debug log messsages with this id\n\
2238         -k: do not truncate existing file and use its size as upper bound on file size\n\
2239         -l flen: the upper bound on file size (default 262144)\n\
2240         -m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
2241         -n: no verifications of file size\n\
2242         -o oplen: the upper bound on operation size (default 65536)\n\
2243         -p progressinterval: debug output at specified operation interval\n\
2244         -q: quieter operation\n\
2245         -r readbdy: 4096 would make reads page aligned (default 1)\n\
2246         -s style: 1 gives smaller truncates (default 0)\n\
2247         -t truncbdy: 4096 would make truncates page aligned (default 1)\n\
2248         -w writebdy: 4096 would make writes page aligned (default 1)\n\
2249         -x: preallocate file space before starting, XFS only (default 0)\n\
2250         -y synchronize changes to a file\n"
2251
2252 #ifdef AIO
2253 "       -A: Use the AIO system calls\n"
2254 #endif
2255 "       -D startingop: debug output starting at specified operation\n"
2256 #ifdef HAVE_LINUX_FALLOC_H
2257 "       -F: Do not use fallocate (preallocation) calls\n"
2258 #endif
2259 #ifdef FALLOC_FL_PUNCH_HOLE
2260 "       -H: Do not use punch hole calls\n"
2261 #endif
2262 #ifdef FALLOC_FL_ZERO_RANGE
2263 "       -z: Do not use zero range calls\n"
2264 #endif
2265 #ifdef FALLOC_FL_COLLAPSE_RANGE
2266 "       -C: Do not use collapse range calls\n"
2267 #endif
2268 #ifdef FALLOC_FL_INSERT_RANGE
2269 "       -I: Do not use insert range calls\n"
2270 #endif
2271 #ifdef FICLONERANGE
2272 "       -J: Do not use clone range calls\n"
2273 #endif
2274 #ifdef FIDEDUPERANGE
2275 "       -B: Do not use dedupe range calls\n"
2276 #endif
2277 #ifdef HAVE_COPY_FILE_RANGE
2278 "       -E: Do not use copy range calls\n"
2279 #endif
2280 "       -L: fsxLite - no file creations & no file size changes\n\
2281         -N numops: total # operations to do (default infinity)\n\
2282         -O: use oplen (see -o flag) for every op (default random)\n\
2283         -P: save .fsxlog .fsxops and .fsxgood files in dirpath (default ./)\n\
2284         -S seed: for random # generator (default 1) 0 gets timestamp\n\
2285         -W: mapped write operations DISabled\n\
2286         -X: Read file and compare to good buffer after every operation.\n\
2287         -R: read() system calls only (mapped reads disabled)\n\
2288         -Z: O_DIRECT (use -R, -W, -r and -w too)\n\
2289         --replay-ops opsfile: replay ops from recorded .fsxops file\n\
2290         --record-ops[=opsfile]: dump ops file also on success. optionally specify ops file name\n\
2291         fname: this filename is REQUIRED (no default)\n");
2292         exit(90);
2293 }
2294
2295
2296 int
2297 getnum(char *s, char **e)
2298 {
2299         int ret;
2300
2301         *e = (char *) 0;
2302         ret = strtol(s, e, 0);
2303         if (*e)
2304                 switch (**e) {
2305                 case 'b':
2306                 case 'B':
2307                         ret *= 512;
2308                         *e = *e + 1;
2309                         break;
2310                 case 'k':
2311                 case 'K':
2312                         ret *= 1024;
2313                         *e = *e + 1;
2314                         break;
2315                 case 'm':
2316                 case 'M':
2317                         ret *= 1024*1024;
2318                         *e = *e + 1;
2319                         break;
2320                 case 'w':
2321                 case 'W':
2322                         ret *= 4;
2323                         *e = *e + 1;
2324                         break;
2325                 }
2326         return (ret);
2327 }
2328
2329 #ifdef AIO
2330
2331 #define QSZ     1024
2332 io_context_t    io_ctx;
2333 struct iocb     iocb;
2334
2335 int aio_setup()
2336 {
2337         int ret;
2338         ret = io_queue_init(QSZ, &io_ctx);
2339         if (ret != 0) {
2340                 fprintf(stderr, "aio_setup: io_queue_init failed: %s\n",
2341                         strerror(ret));
2342                 return(-1);
2343         }
2344         return(0);
2345 }
2346
2347 int
2348 __aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
2349 {
2350         struct io_event event;
2351         static struct timespec ts;
2352         struct iocb *iocbs[] = { &iocb };
2353         int ret;
2354         long res;
2355
2356         if (rw == READ) {
2357                 io_prep_pread(&iocb, fd, buf, len, offset);
2358         } else {
2359                 io_prep_pwrite(&iocb, fd, buf, len, offset);
2360         }
2361
2362         ts.tv_sec = 30;
2363         ts.tv_nsec = 0;
2364         ret = io_submit(io_ctx, 1, iocbs);
2365         if (ret != 1) {
2366                 fprintf(stderr, "errcode=%d\n", ret);
2367                 fprintf(stderr, "aio_rw: io_submit failed: %s\n",
2368                                 strerror(ret));
2369                 goto out_error;
2370         }
2371
2372         ret = io_getevents(io_ctx, 1, 1, &event, &ts);
2373         if (ret != 1) {
2374                 if (ret == 0)
2375                         fprintf(stderr, "aio_rw: no events available\n");
2376                 else {
2377                         fprintf(stderr, "errcode=%d\n", -ret);
2378                         fprintf(stderr, "aio_rw: io_getevents failed: %s\n",
2379                                         strerror(-ret));
2380                 }
2381                 goto out_error;
2382         }
2383         if (len != event.res) {
2384                 /*
2385                  * The b0rked libaio defines event.res as unsigned.
2386                  * However the kernel strucuture has it signed,
2387                  * and it's used to pass negated error value.
2388                  * Till the library is fixed use the temp var.
2389                  */
2390                 res = (long)event.res;
2391                 if (res >= 0)
2392                         fprintf(stderr, "bad io length: %lu instead of %u\n",
2393                                         res, len);
2394                 else {
2395                         fprintf(stderr, "errcode=%ld\n", -res);
2396                         fprintf(stderr, "aio_rw: async io failed: %s\n",
2397                                         strerror(-res));
2398                         ret = res;
2399                         goto out_error;
2400                 }
2401
2402         }
2403         return event.res;
2404
2405 out_error:
2406         /*
2407          * The caller expects error return in traditional libc
2408          * convention, i.e. -1 and the errno set to error.
2409          */
2410         errno = -ret;
2411         return -1;
2412 }
2413
2414 int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
2415 {
2416         int ret;
2417
2418         if (aio) {
2419                 ret = __aio_rw(rw, fd, buf, len, offset);
2420         } else {
2421                 if (rw == READ)
2422                         ret = read(fd, buf, len);
2423                 else
2424                         ret = write(fd, buf, len);
2425         }
2426         return ret;
2427 }
2428
2429 #endif
2430
2431 #define test_fallocate(mode) __test_fallocate(mode, #mode)
2432
2433 int
2434 __test_fallocate(int mode, const char *mode_str)
2435 {
2436 #ifdef HAVE_LINUX_FALLOC_H
2437         int ret = 0;
2438         if (!lite) {
2439                 if (fallocate(fd, mode, file_size, 1) &&
2440                     (errno == ENOSYS || errno == EOPNOTSUPP)) {
2441                         if(!quiet)
2442                                 fprintf(stderr,
2443                                         "main: filesystem does not support "
2444                                         "fallocate mode %s, disabling!\n",
2445                                         mode_str);
2446                 } else {
2447                         ret = 1;
2448                         if (ftruncate(fd, file_size)) {
2449                                 warn("main: ftruncate");
2450                                 exit(132);
2451                         }
2452                 }
2453         }
2454         return ret;
2455 #endif
2456 }
2457
2458 static struct option longopts[] = {
2459         {"replay-ops", required_argument, 0, 256},
2460         {"record-ops", optional_argument, 0, 255},
2461         { }
2462 };
2463
2464 int
2465 main(int argc, char **argv)
2466 {
2467         int     i, style, ch;
2468         char    *endp, *tmp;
2469         char logfile[PATH_MAX];
2470         struct stat statbuf;
2471         int o_flags = O_RDWR|O_CREAT|O_TRUNC;
2472
2473         logfile[0] = 0;
2474         dname[0] = 0;
2475
2476         page_size = getpagesize();
2477         page_mask = page_size - 1;
2478         mmap_mask = page_mask;
2479
2480
2481         setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
2482
2483         while ((ch = getopt_long(argc, argv,
2484                                  "b:c:dfg:i:j:kl:m:no:p:qr:s:t:w:xyABD:EFJKHzCILN:OP:RS:WXZ",
2485                                  longopts, NULL)) != EOF)
2486                 switch (ch) {
2487                 case 'b':
2488                         simulatedopcount = getnum(optarg, &endp);
2489                         if (!quiet)
2490                                 prt("Will begin at operation %ld\n", simulatedopcount);
2491                         if (simulatedopcount == 0)
2492                                 usage();
2493                         simulatedopcount -= 1;
2494                         break;
2495                 case 'c':
2496                         closeprob = getnum(optarg, &endp);
2497                         if (!quiet)
2498                                 prt("Chance of close/open is 1 in %d\n", closeprob);
2499                         if (closeprob <= 0)
2500                                 usage();
2501                         break;
2502                 case 'd':
2503                         debug = 1;
2504                         break;
2505                 case 'f':
2506                         flush = 1;
2507                         break;
2508                 case 'g':
2509                         filldata = *optarg;
2510                         break;
2511                 case 'i':
2512                         integrity = 1;
2513                         logdev = strdup(optarg);
2514                         if (!logdev) {
2515                                 prterr("strdup");
2516                                 exit(101);
2517                         }
2518                         break;
2519                 case 'j':
2520                         logid = strdup(optarg);
2521                         if (!logid) {
2522                                 prterr("strdup");
2523                                 exit(101);
2524                         }
2525                         break;
2526                 case 'k':
2527                         o_flags &= ~O_TRUNC;
2528                         break;
2529                 case 'l':
2530                         maxfilelen = getnum(optarg, &endp);
2531                         if (maxfilelen <= 0)
2532                                 usage();
2533                         break;
2534                 case 'm':
2535                         monitorstart = getnum(optarg, &endp);
2536                         if (monitorstart < 0)
2537                                 usage();
2538                         if (!endp || *endp++ != ':')
2539                                 usage();
2540                         monitorend = getnum(endp, &endp);
2541                         if (monitorend < 0)
2542                                 usage();
2543                         if (monitorend == 0)
2544                                 monitorend = -1; /* aka infinity */
2545                         debug = 1;
2546                 case 'n':
2547                         sizechecks = 0;
2548                         break;
2549                 case 'o':
2550                         maxoplen = getnum(optarg, &endp);
2551                         if (maxoplen <= 0)
2552                                 usage();
2553                         break;
2554                 case 'p':
2555                         progressinterval = getnum(optarg, &endp);
2556                         if (progressinterval == 0)
2557                                 usage();
2558                         break;
2559                 case 'q':
2560                         quiet = 1;
2561                         break;
2562                 case 'r':
2563                         readbdy = getnum(optarg, &endp);
2564                         if (readbdy <= 0)
2565                                 usage();
2566                         break;
2567                 case 's':
2568                         style = getnum(optarg, &endp);
2569                         if (style < 0 || style > 1)
2570                                 usage();
2571                         break;
2572                 case 't':
2573                         truncbdy = getnum(optarg, &endp);
2574                         if (truncbdy <= 0)
2575                                 usage();
2576                         break;
2577                 case 'w':
2578                         writebdy = getnum(optarg, &endp);
2579                         if (writebdy <= 0)
2580                                 usage();
2581                         break;
2582                 case 'x':
2583                         prealloc = 1;
2584                         break;
2585                 case 'y':
2586                         do_fsync = 1;
2587                         break;
2588                 case 'A':
2589                         aio = 1;
2590                         break;
2591                 case 'D':
2592                         debugstart = getnum(optarg, &endp);
2593                         if (debugstart < 1)
2594                                 usage();
2595                         break;
2596                 case 'F':
2597                         fallocate_calls = 0;
2598                         break;
2599                 case 'K':
2600                         keep_size_calls = 0;
2601                         break;
2602                 case 'H':
2603                         punch_hole_calls = 0;
2604                         break;
2605                 case 'z':
2606                         zero_range_calls = 0;
2607                         break;
2608                 case 'C':
2609                         collapse_range_calls = 0;
2610                         break;
2611                 case 'I':
2612                         insert_range_calls = 0;
2613                         break;
2614                 case 'J':
2615                         clone_range_calls = 0;
2616                         break;
2617                 case 'B':
2618                         dedupe_range_calls = 0;
2619                         break;
2620                 case 'E':
2621                         copy_range_calls = 0;
2622                         break;
2623                 case 'L':
2624                         lite = 1;
2625                         o_flags &= ~(O_CREAT|O_TRUNC);
2626                         break;
2627                 case 'N':
2628                         numops = getnum(optarg, &endp);
2629                         if (numops < 0)
2630                                 usage();
2631                         break;
2632                 case 'O':
2633                         randomoplen = 0;
2634                         break;
2635                 case 'P':
2636                         strncpy(dname, optarg, sizeof(dname));
2637                         strcat(dname, "/");
2638                         dirpath = strlen(dname);
2639                         break;
2640                 case 'R':
2641                         mapped_reads = 0;
2642                         break;
2643                 case 'S':
2644                         seed = getnum(optarg, &endp);
2645                         if (seed == 0) {
2646                                 seed = time(0) % 10000;
2647                                 seed += (int)getpid();
2648                         }
2649                         if (seed < 0)
2650                                 usage();
2651                         break;
2652                 case 'W':
2653                         mapped_writes = 0;
2654                         if (!quiet)
2655                                 prt("mapped writes DISABLED\n");
2656                         break;
2657                 case 'X':
2658                         check_file = 1;
2659                         break;
2660                 case 'Z':
2661                         o_direct = O_DIRECT;
2662                         o_flags |= O_DIRECT;
2663                         break;
2664                 case 255:  /* --record-ops */
2665                         if (optarg)
2666                                 strncpy(opsfile, optarg, sizeof(opsfile));
2667                         recordops = opsfile;
2668                         break;
2669                 case 256:  /* --replay-ops */
2670                         replayops = optarg;
2671                         break;
2672                 default:
2673                         usage();
2674                         /* NOTREACHED */
2675                 }
2676         argc -= optind;
2677         argv += optind;
2678         if (argc != 1)
2679                 usage();
2680
2681         if (integrity && !dirpath) {
2682                 fprintf(stderr, "option -i <logdev> requires -P <dirpath>\n");
2683                 usage();
2684         }
2685
2686         fname = argv[0];
2687         tmp = strdup(fname);
2688         if (!tmp) {
2689                 prterr("strdup");
2690                 exit(101);
2691         }
2692         bname = basename(tmp);
2693
2694         signal(SIGHUP,  cleanup);
2695         signal(SIGINT,  cleanup);
2696         signal(SIGPIPE, cleanup);
2697         signal(SIGALRM, cleanup);
2698         signal(SIGTERM, cleanup);
2699         signal(SIGXCPU, cleanup);
2700         signal(SIGXFSZ, cleanup);
2701         signal(SIGVTALRM,       cleanup);
2702         signal(SIGUSR1, cleanup);
2703         signal(SIGUSR2, cleanup);
2704
2705         if (!quiet && seed)
2706                 prt("Seed set to %d\n", seed);
2707         srandom(seed);
2708         fd = open(fname, o_flags, 0666);
2709         if (fd < 0) {
2710                 prterr(fname);
2711                 exit(91);
2712         }
2713         if (fstat(fd, &statbuf)) {
2714                 prterr("check_size: fstat");
2715                 exit(91);
2716         }
2717         block_size = statbuf.st_blksize;
2718 #ifdef XFS
2719         if (prealloc) {
2720                 xfs_flock64_t   resv = { 0 };
2721 #ifdef HAVE_XFS_PLATFORM_DEFS_H
2722                 if (!platform_test_xfs_fd(fd)) {
2723                         prterr(fname);
2724                         fprintf(stderr, "main: cannot prealloc, non XFS\n");
2725                         exit(96);
2726                 }
2727 #endif
2728                 resv.l_len = maxfilelen;
2729                 if ((xfsctl(fname, fd, XFS_IOC_RESVSP, &resv)) < 0) {
2730                         prterr(fname);
2731                         exit(97);
2732                 }
2733         }
2734 #endif
2735
2736         if (dirpath) {
2737                 snprintf(goodfile, sizeof(goodfile), "%s%s.fsxgood", dname, bname);
2738                 snprintf(logfile, sizeof(logfile), "%s%s.fsxlog", dname, bname);
2739                 if (!*opsfile)
2740                         snprintf(opsfile, sizeof(opsfile), "%s%s.fsxops", dname, bname);
2741         } else {
2742                 snprintf(goodfile, sizeof(goodfile), "%s.fsxgood", fname);
2743                 snprintf(logfile, sizeof(logfile), "%s.fsxlog", fname);
2744                 if (!*opsfile)
2745                         snprintf(opsfile, sizeof(opsfile), "%s.fsxops", fname);
2746         }
2747         fsxgoodfd = open(goodfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
2748         if (fsxgoodfd < 0) {
2749                 prterr(goodfile);
2750                 exit(92);
2751         }
2752         fsxlogf = fopen(logfile, "w");
2753         if (fsxlogf == NULL) {
2754                 prterr(logfile);
2755                 exit(93);
2756         }
2757         unlink(opsfile);
2758
2759         if (replayops) {
2760                 replayopsf = fopen(replayops, "r");
2761                 if (!replayopsf) {
2762                         prterr(replayops);
2763                         exit(93);
2764                 }
2765         }
2766
2767 #ifdef AIO
2768         if (aio)
2769                 aio_setup();
2770 #endif
2771
2772         if (!(o_flags & O_TRUNC)) {
2773                 off_t ret;
2774                 file_size = maxfilelen = biggest = lseek(fd, (off_t)0, SEEK_END);
2775                 if (file_size == (off_t)-1) {
2776                         prterr(fname);
2777                         warn("main: lseek eof");
2778                         exit(94);
2779                 }
2780                 ret = lseek(fd, (off_t)0, SEEK_SET);
2781                 if (ret == (off_t)-1) {
2782                         prterr(fname);
2783                         warn("main: lseek 0");
2784                         exit(95);
2785                 }
2786         }
2787         original_buf = (char *) malloc(maxfilelen);
2788         for (i = 0; i < maxfilelen; i++)
2789                 original_buf[i] = random() % 256;
2790         good_buf = (char *) malloc(maxfilelen + writebdy);
2791         good_buf = round_ptr_up(good_buf, writebdy, 0);
2792         memset(good_buf, '\0', maxfilelen);
2793         temp_buf = (char *) malloc(maxoplen + readbdy);
2794         temp_buf = round_ptr_up(temp_buf, readbdy, 0);
2795         memset(temp_buf, '\0', maxoplen);
2796         if (lite) {     /* zero entire existing file */
2797                 ssize_t written;
2798
2799                 written = write(fd, good_buf, (size_t)maxfilelen);
2800                 if (written != maxfilelen) {
2801                         if (written == -1) {
2802                                 prterr(fname);
2803                                 warn("main: error on write");
2804                         } else
2805                                 warn("main: short write, 0x%x bytes instead "
2806                                         "of 0x%lx\n",
2807                                         (unsigned)written,
2808                                         maxfilelen);
2809                         exit(98);
2810                 }
2811         } else {
2812                 ssize_t ret, len = file_size;
2813                 off_t off = 0;
2814
2815                 while (len > 0) {
2816                         ret = read(fd, good_buf + off, len);
2817                         if (ret == -1) {
2818                                 prterr(fname);
2819                                 warn("main: error on read");
2820                                 exit(98);
2821                         }
2822                         len -= ret;
2823                         off += ret;
2824                 }
2825
2826                 check_trunc_hack();
2827         }
2828
2829         if (fallocate_calls)
2830                 fallocate_calls = test_fallocate(0);
2831         if (keep_size_calls)
2832                 keep_size_calls = test_fallocate(FALLOC_FL_KEEP_SIZE);
2833         if (punch_hole_calls)
2834                 punch_hole_calls = test_fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE);
2835         if (zero_range_calls)
2836                 zero_range_calls = test_fallocate(FALLOC_FL_ZERO_RANGE);
2837         if (collapse_range_calls)
2838                 collapse_range_calls = test_fallocate(FALLOC_FL_COLLAPSE_RANGE);
2839         if (insert_range_calls)
2840                 insert_range_calls = test_fallocate(FALLOC_FL_INSERT_RANGE);
2841         if (clone_range_calls)
2842                 clone_range_calls = test_clone_range();
2843         if (dedupe_range_calls)
2844                 dedupe_range_calls = test_dedupe_range();
2845         if (copy_range_calls)
2846                 copy_range_calls = test_copy_range();
2847
2848         while (numops == -1 || numops--)
2849                 if (!test())
2850                         break;
2851
2852         free(tmp);
2853         if (close(fd)) {
2854                 prterr("close");
2855                 report_failure(99);
2856         }
2857         prt("All %lu operations completed A-OK!\n", testcalls);
2858         if (recordops)
2859                 logdump();
2860
2861         exit(0);
2862         return 0;
2863 }