filesetup.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <string.h>
   4 #include <assert.h>
   5 #include <dirent.h>
   6 #include <libgen.h>
   7 #include <sys/stat.h>
   8 #include <sys/mman.h>
   9 #include <sys/types.h>
  10
  11 #include "fio.h"
  12 #include "smalloc.h"
  13 #include "filehash.h"
  14 #include "options.h"
  15 #include "os/os.h"
  16 #include "hash.h"
  17 #include "lib/axmap.h"
  18
  19 #ifdef CONFIG_LINUX_FALLOCATE
  20 #include <linux/falloc.h>
  21 #endif
  22
  23 static int root_warn;
  24
  25 static FLIST_HEAD(filename_list);
  26
  27 static inline void clear_error(struct thread_data *td)
  28 {
  29         td->error = 0;
  30         td->verror[0] = '\0';
  31 }
  32
  33 /*
  34  * Leaves f->fd open on success, caller must close
  35  */
  36 static int extend_file(struct thread_data *td, struct fio_file *f)
  37 {
  38         int r, new_layout = 0, unlink_file = 0, flags;
  39         unsigned long long left;
  40         unsigned int bs;
  41         char *b = NULL;
  42
  43         if (read_only) {
  44                 log_err("fio: refusing extend of file due to read-only\n");
  45                 return 0;
  46         }
  47
  48         /*
  49          * check if we need to lay the file out complete again. fio
  50          * does that for operations involving reads, or for writes
  51          * where overwrite is set
  52          */
  53         if (td_read(td) ||
  54            (td_write(td) && td->o.overwrite && !td->o.file_append) ||
  55             (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
  56                 new_layout = 1;
  57         if (td_write(td) && !td->o.overwrite && !td->o.file_append)
  58                 unlink_file = 1;
  59
  60         if (unlink_file || new_layout) {
  61                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
  62                 if ((td_io_unlink_file(td, f) < 0) && (errno != ENOENT)) {
  63                         td_verror(td, errno, "unlink");
  64                         return 1;
  65                 }
  66         }
  67
  68         flags = O_WRONLY | O_CREAT;
  69         if (new_layout)
  70                 flags |= O_TRUNC;
  71
  72 #ifdef WIN32
  73         flags |= _O_BINARY;
  74 #endif
  75
  76         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  77         f->fd = open(f->file_name, flags, 0644);
  78         if (f->fd < 0) {
  79                 td_verror(td, errno, "open");
  80                 return 1;
  81         }
  82
  83 #ifdef CONFIG_POSIX_FALLOCATE
  84         if (!td->o.fill_device) {
  85                 switch (td->o.fallocate_mode) {
  86                 case FIO_FALLOCATE_NONE:
  87                         break;
  88                 case FIO_FALLOCATE_POSIX:
  89                         dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
  90                                  f->file_name,
  91                                  (unsigned long long) f->real_file_size);
  92
  93                         r = posix_fallocate(f->fd, 0, f->real_file_size);
  94                         if (r > 0) {
  95                                 log_err("fio: posix_fallocate fails: %s\n",
  96                                                 strerror(r));
  97                         }
  98                         break;
  99 #ifdef CONFIG_LINUX_FALLOCATE
 100                 case FIO_FALLOCATE_KEEP_SIZE:
 101                         dprint(FD_FILE,
 102                                 "fallocate(FALLOC_FL_KEEP_SIZE) "
 103                                 "file %s size %llu\n", f->file_name,
 104                                 (unsigned long long) f->real_file_size);
 105
 106                         r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
 107                                         f->real_file_size);
 108                         if (r != 0)
 109                                 td_verror(td, errno, "fallocate");
 110
 111                         break;
 112 #endif /* CONFIG_LINUX_FALLOCATE */
 113                 default:
 114                         log_err("fio: unknown fallocate mode: %d\n",
 115                                 td->o.fallocate_mode);
 116                         assert(0);
 117                 }
 118         }
 119 #endif /* CONFIG_POSIX_FALLOCATE */
 120
 121         if (!new_layout)
 122                 goto done;
 123
 124         /*
 125          * The size will be -1ULL when fill_device is used, so don't truncate
 126          * or fallocate this file, just write it
 127          */
 128         if (!td->o.fill_device) {
 129                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
 130                                         (unsigned long long) f->real_file_size);
 131                 if (ftruncate(f->fd, f->real_file_size) == -1) {
 132                         if (errno != EFBIG) {
 133                                 td_verror(td, errno, "ftruncate");
 134                                 goto err;
 135                         }
 136                 }
 137         }
 138
 139         b = malloc(td->o.max_bs[DDIR_WRITE]);
 140
 141         left = f->real_file_size;
 142         while (left && !td->terminate) {
 143                 bs = td->o.max_bs[DDIR_WRITE];
 144                 if (bs > left)
 145                         bs = left;
 146
 147                 fill_io_buffer(td, b, bs, bs);
 148
 149                 r = write(f->fd, b, bs);
 150
 151                 if (r > 0) {
 152                         left -= r;
 153                         continue;
 154                 } else {
 155                         if (r < 0) {
 156                                 int __e = errno;
 157
 158                                 if (__e == ENOSPC) {
 159                                         if (td->o.fill_device)
 160                                                 break;
 161                                         log_info("fio: ENOSPC on laying out "
 162                                                  "file, stopping\n");
 163                                         break;
 164                                 }
 165                                 td_verror(td, errno, "write");
 166                         } else
 167                                 td_verror(td, EIO, "write");
 168
 169                         break;
 170                 }
 171         }
 172
 173         if (td->terminate) {
 174                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 175                 td_io_unlink_file(td, f);
 176         } else if (td->o.create_fsync) {
 177                 if (fsync(f->fd) < 0) {
 178                         td_verror(td, errno, "fsync");
 179                         goto err;
 180                 }
 181         }
 182         if (td->o.fill_device && !td_write(td)) {
 183                 fio_file_clear_size_known(f);
 184                 if (td_io_get_file_size(td, f))
 185                         goto err;
 186                 if (f->io_size > f->real_file_size)
 187                         f->io_size = f->real_file_size;
 188         }
 189
 190         free(b);
 191 done:
 192         return 0;
 193 err:
 194         close(f->fd);
 195         f->fd = -1;
 196         if (b)
 197                 free(b);
 198         return 1;
 199 }
 200
 201 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 202 {
 203         int ret = 0, r, did_open = 0, old_runstate;
 204         unsigned long long left;
 205         unsigned int bs;
 206         char *b;
 207
 208         if (td->io_ops->flags & FIO_PIPEIO)
 209                 return 0;
 210
 211         if (!fio_file_open(f)) {
 212                 if (td->io_ops->open_file(td, f)) {
 213                         log_err("fio: cannot pre-read, failed to open file\n");
 214                         return 1;
 215                 }
 216                 did_open = 1;
 217         }
 218
 219         old_runstate = td_bump_runstate(td, TD_PRE_READING);
 220
 221         bs = td->o.max_bs[DDIR_READ];
 222         b = malloc(bs);
 223         memset(b, 0, bs);
 224
 225         if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
 226                 td_verror(td, errno, "lseek");
 227                 log_err("fio: failed to lseek pre-read file\n");
 228                 ret = 1;
 229                 goto error;
 230         }
 231
 232         left = f->io_size;
 233
 234         while (left && !td->terminate) {
 235                 if (bs > left)
 236                         bs = left;
 237
 238                 r = read(f->fd, b, bs);
 239
 240                 if (r == (int) bs) {
 241                         left -= bs;
 242                         continue;
 243                 } else {
 244                         td_verror(td, EIO, "pre_read");
 245                         break;
 246                 }
 247         }
 248
 249 error:
 250         td_restore_runstate(td, old_runstate);
 251
 252         if (did_open)
 253                 td->io_ops->close_file(td, f);
 254
 255         free(b);
 256         return ret;
 257 }
 258
 259 static unsigned long long get_rand_file_size(struct thread_data *td)
 260 {
 261         unsigned long long ret, sized;
 262         unsigned long r;
 263
 264         r = __rand(&td->file_size_state);
 265         sized = td->o.file_size_high - td->o.file_size_low;
 266         ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
 267         ret += td->o.file_size_low;
 268         ret -= (ret % td->o.rw_min_bs);
 269         return ret;
 270 }
 271
 272 static int file_size(struct thread_data *td, struct fio_file *f)
 273 {
 274         struct stat st;
 275
 276         if (stat(f->file_name, &st) == -1) {
 277                 td_verror(td, errno, "fstat");
 278                 return 1;
 279         }
 280
 281         f->real_file_size = st.st_size;
 282         return 0;
 283 }
 284
 285 static int bdev_size(struct thread_data *td, struct fio_file *f)
 286 {
 287         unsigned long long bytes = 0;
 288         int r;
 289
 290         if (td->io_ops->open_file(td, f)) {
 291                 log_err("fio: failed opening blockdev %s for size check\n",
 292                         f->file_name);
 293                 return 1;
 294         }
 295
 296         r = blockdev_size(f, &bytes);
 297         if (r) {
 298                 td_verror(td, r, "blockdev_size");
 299                 goto err;
 300         }
 301
 302         if (!bytes) {
 303                 log_err("%s: zero sized block device?\n", f->file_name);
 304                 goto err;
 305         }
 306
 307         f->real_file_size = bytes;
 308         td->io_ops->close_file(td, f);
 309         return 0;
 310 err:
 311         td->io_ops->close_file(td, f);
 312         return 1;
 313 }
 314
 315 static int char_size(struct thread_data *td, struct fio_file *f)
 316 {
 317 #ifdef FIO_HAVE_CHARDEV_SIZE
 318         unsigned long long bytes = 0;
 319         int r;
 320
 321         if (td->io_ops->open_file(td, f)) {
 322                 log_err("fio: failed opening blockdev %s for size check\n",
 323                         f->file_name);
 324                 return 1;
 325         }
 326
 327         r = chardev_size(f, &bytes);
 328         if (r) {
 329                 td_verror(td, r, "chardev_size");
 330                 goto err;
 331         }
 332
 333         if (!bytes) {
 334                 log_err("%s: zero sized char device?\n", f->file_name);
 335                 goto err;
 336         }
 337
 338         f->real_file_size = bytes;
 339         td->io_ops->close_file(td, f);
 340         return 0;
 341 err:
 342         td->io_ops->close_file(td, f);
 343         return 1;
 344 #else
 345         f->real_file_size = -1ULL;
 346         return 0;
 347 #endif
 348 }
 349
 350 static int get_file_size(struct thread_data *td, struct fio_file *f)
 351 {
 352         int ret = 0;
 353
 354         if (fio_file_size_known(f))
 355                 return 0;
 356
 357         if (f->filetype == FIO_TYPE_FILE)
 358                 ret = file_size(td, f);
 359         else if (f->filetype == FIO_TYPE_BD)
 360                 ret = bdev_size(td, f);
 361         else if (f->filetype == FIO_TYPE_CHAR)
 362                 ret = char_size(td, f);
 363         else
 364                 f->real_file_size = -1;
 365
 366         if (ret)
 367                 return ret;
 368
 369         if (f->file_offset > f->real_file_size) {
 370                 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
 371                                         (unsigned long long) f->file_offset,
 372                                         (unsigned long long) f->real_file_size);
 373                 return 1;
 374         }
 375
 376         fio_file_set_size_known(f);
 377         return 0;
 378 }
 379
 380 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 381                                    unsigned long long off,
 382                                    unsigned long long len)
 383 {
 384         int ret = 0;
 385
 386 #ifdef CONFIG_ESX
 387         return 0;
 388 #endif
 389
 390         if (len == -1ULL)
 391                 len = f->io_size;
 392         if (off == -1ULL)
 393                 off = f->file_offset;
 394
 395         if (len == -1ULL || off == -1ULL)
 396                 return 0;
 397
 398         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 399                                                                 len);
 400
 401         if (td->io_ops->invalidate)
 402                 ret = td->io_ops->invalidate(td, f);
 403         else if (f->mmap_ptr) {
 404                 ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
 405 #ifdef FIO_MADV_FREE
 406                 if (f->filetype == FIO_TYPE_BD)
 407                         (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
 408 #endif
 409         } else if (f->filetype == FIO_TYPE_FILE) {
 410                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 411         } else if (f->filetype == FIO_TYPE_BD) {
 412                 ret = blockdev_invalidate_cache(f);
 413                 if (ret < 0 && errno == EACCES && geteuid()) {
 414                         if (!root_warn) {
 415                                 log_err("fio: only root may flush block "
 416                                         "devices. Cache flush bypassed!\n");
 417                                 root_warn = 1;
 418                         }
 419                         ret = 0;
 420                 }
 421         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 422                 ret = 0;
 423
 424         /*
 425          * Cache flushing isn't a fatal condition, and we know it will
 426          * happen on some platforms where we don't have the proper
 427          * function to flush eg block device caches. So just warn and
 428          * continue on our way.
 429          */
 430         if (ret) {
 431                 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
 432                 ret = 0;
 433         }
 434
 435         return 0;
 436
 437 }
 438
 439 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 440 {
 441         if (!fio_file_open(f))
 442                 return 0;
 443
 444         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 445 }
 446
 447 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 448 {
 449         int ret = 0;
 450
 451         dprint(FD_FILE, "fd close %s\n", f->file_name);
 452
 453         remove_file_hash(f);
 454
 455         if (close(f->fd) < 0)
 456                 ret = errno;
 457
 458         f->fd = -1;
 459
 460         if (f->shadow_fd != -1) {
 461                 close(f->shadow_fd);
 462                 f->shadow_fd = -1;
 463         }
 464
 465         f->engine_data = 0;
 466         return ret;
 467 }
 468
 469 int file_lookup_open(struct fio_file *f, int flags)
 470 {
 471         struct fio_file *__f;
 472         int from_hash;
 473
 474         __f = lookup_file_hash(f->file_name);
 475         if (__f) {
 476                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 477                 /*
 478                  * racy, need the __f->lock locked
 479                  */
 480                 f->lock = __f->lock;
 481                 from_hash = 1;
 482         } else {
 483                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 484                 from_hash = 0;
 485         }
 486
 487 #ifdef WIN32
 488         flags |= _O_BINARY;
 489 #endif
 490
 491         f->fd = open(f->file_name, flags, 0600);
 492         return from_hash;
 493 }
 494
 495 static int file_close_shadow_fds(struct thread_data *td)
 496 {
 497         struct fio_file *f;
 498         int num_closed = 0;
 499         unsigned int i;
 500
 501         for_each_file(td, f, i) {
 502                 if (f->shadow_fd == -1)
 503                         continue;
 504
 505                 close(f->shadow_fd);
 506                 f->shadow_fd = -1;
 507                 num_closed++;
 508         }
 509
 510         return num_closed;
 511 }
 512
 513 int generic_open_file(struct thread_data *td, struct fio_file *f)
 514 {
 515         int is_std = 0;
 516         int flags = 0;
 517         int from_hash = 0;
 518
 519         dprint(FD_FILE, "fd open %s\n", f->file_name);
 520
 521         if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
 522                 log_err("fio: trim only applies to block device\n");
 523                 return 1;
 524         }
 525
 526         if (!strcmp(f->file_name, "-")) {
 527                 if (td_rw(td)) {
 528                         log_err("fio: can't read/write to stdin/out\n");
 529                         return 1;
 530                 }
 531                 is_std = 1;
 532
 533                 /*
 534                  * move output logging to stderr, if we are writing to stdout
 535                  */
 536                 if (td_write(td))
 537                         f_out = stderr;
 538         }
 539
 540         if (td_trim(td))
 541                 goto skip_flags;
 542         if (td->o.odirect)
 543                 flags |= OS_O_DIRECT;
 544         if (td->o.oatomic) {
 545                 if (!FIO_O_ATOMIC) {
 546                         td_verror(td, EINVAL, "OS does not support atomic IO");
 547                         return 1;
 548                 }
 549                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
 550         }
 551         if (td->o.sync_io)
 552                 flags |= O_SYNC;
 553         if (td->o.create_on_open)
 554                 flags |= O_CREAT;
 555 skip_flags:
 556         if (f->filetype != FIO_TYPE_FILE)
 557                 flags |= FIO_O_NOATIME;
 558
 559 open_again:
 560         if (td_write(td)) {
 561                 if (!read_only)
 562                         flags |= O_RDWR;
 563
 564                 if (f->filetype == FIO_TYPE_FILE)
 565                         flags |= O_CREAT;
 566
 567                 if (is_std)
 568                         f->fd = dup(STDOUT_FILENO);
 569                 else
 570                         from_hash = file_lookup_open(f, flags);
 571         } else if (td_read(td)) {
 572                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 573                         flags |= O_RDWR;
 574                 else
 575                         flags |= O_RDONLY;
 576
 577                 if (is_std)
 578                         f->fd = dup(STDIN_FILENO);
 579                 else
 580                         from_hash = file_lookup_open(f, flags);
 581         } else { //td trim
 582                 flags |= O_RDWR;
 583                 from_hash = file_lookup_open(f, flags);
 584         }
 585
 586         if (f->fd == -1) {
 587                 char buf[FIO_VERROR_SIZE];
 588                 int __e = errno;
 589
 590                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 591                         flags &= ~FIO_O_NOATIME;
 592                         goto open_again;
 593                 }
 594                 if (__e == EMFILE && file_close_shadow_fds(td))
 595                         goto open_again;
 596
 597                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
 598
 599                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
 600                         log_err("fio: looks like your file system does not " \
 601                                 "support direct=1/buffered=0\n");
 602                 }
 603
 604                 td_verror(td, __e, buf);
 605                 return 1;
 606         }
 607
 608         if (!from_hash && f->fd != -1) {
 609                 if (add_file_hash(f)) {
 610                         int fio_unused ret;
 611
 612                         /*
 613                          * Stash away descriptor for later close. This is to
 614                          * work-around a "feature" on Linux, where a close of
 615                          * an fd that has been opened for write will trigger
 616                          * udev to call blkid to check partitions, fs id, etc.
 617                          * That pollutes the device cache, which can slow down
 618                          * unbuffered accesses.
 619                          */
 620                         if (f->shadow_fd == -1)
 621                                 f->shadow_fd = f->fd;
 622                         else {
 623                                 /*
 624                                  * OK to ignore, we haven't done anything
 625                                  * with it
 626                                  */
 627                                 ret = generic_close_file(td, f);
 628                         }
 629                         goto open_again;
 630                 }
 631         }
 632
 633         return 0;
 634 }
 635
 636 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 637 {
 638         return get_file_size(td, f);
 639 }
 640
 641 /*
 642  * open/close all files, so that ->real_file_size gets set
 643  */
 644 static int get_file_sizes(struct thread_data *td)
 645 {
 646         struct fio_file *f;
 647         unsigned int i;
 648         int err = 0;
 649
 650         for_each_file(td, f, i) {
 651                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 652                                                                 f->file_name);
 653
 654                 if (td_io_get_file_size(td, f)) {
 655                         if (td->error != ENOENT) {
 656                                 log_err("%s\n", td->verror);
 657                                 err = 1;
 658                                 break;
 659                         }
 660                         clear_error(td);
 661                 }
 662
 663                 if (f->real_file_size == -1ULL && td->o.size)
 664                         f->real_file_size = td->o.size / td->o.nr_files;
 665         }
 666
 667         return err;
 668 }
 669
 670 struct fio_mount {
 671         struct flist_head list;
 672         const char *base;
 673         char __base[256];
 674         unsigned int key;
 675 };
 676
 677 /*
 678  * Get free number of bytes for each file on each unique mount.
 679  */
 680 static unsigned long long get_fs_free_counts(struct thread_data *td)
 681 {
 682         struct flist_head *n, *tmp;
 683         unsigned long long ret = 0;
 684         struct fio_mount *fm;
 685         FLIST_HEAD(list);
 686         struct fio_file *f;
 687         unsigned int i;
 688
 689         for_each_file(td, f, i) {
 690                 struct stat sb;
 691                 char buf[256];
 692
 693                 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
 694                         if (f->real_file_size != -1ULL)
 695                                 ret += f->real_file_size;
 696                         continue;
 697                 } else if (f->filetype != FIO_TYPE_FILE)
 698                         continue;
 699
 700                 buf[255] = '\0';
 701                 strncpy(buf, f->file_name, 255);
 702
 703                 if (stat(buf, &sb) < 0) {
 704                         if (errno != ENOENT)
 705                                 break;
 706                         strcpy(buf, ".");
 707                         if (stat(buf, &sb) < 0)
 708                                 break;
 709                 }
 710
 711                 fm = NULL;
 712                 flist_for_each(n, &list) {
 713                         fm = flist_entry(n, struct fio_mount, list);
 714                         if (fm->key == sb.st_dev)
 715                                 break;
 716
 717                         fm = NULL;
 718                 }
 719
 720                 if (fm)
 721                         continue;
 722
 723                 fm = calloc(1, sizeof(*fm));
 724                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
 725                 fm->base = basename(fm->__base);
 726                 fm->key = sb.st_dev;
 727                 flist_add(&fm->list, &list);
 728         }
 729
 730         flist_for_each_safe(n, tmp, &list) {
 731                 unsigned long long sz;
 732
 733                 fm = flist_entry(n, struct fio_mount, list);
 734                 flist_del(&fm->list);
 735
 736                 sz = get_fs_size(fm->base);
 737                 if (sz && sz != -1ULL)
 738                         ret += sz;
 739
 740                 free(fm);
 741         }
 742
 743         return ret;
 744 }
 745
 746 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 747 {
 748         struct thread_options *o = &td->o;
 749
 750         if (o->file_append && f->filetype == FIO_TYPE_FILE)
 751                 return f->real_file_size;
 752
 753         return td->o.start_offset +
 754                 td->subjob_number * td->o.offset_increment;
 755 }
 756
 757 /*
 758  * Open the files and setup files sizes, creating files if necessary.
 759  */
 760 int setup_files(struct thread_data *td)
 761 {
 762         unsigned long long total_size, extend_size;
 763         struct thread_options *o = &td->o;
 764         struct fio_file *f;
 765         unsigned int i, nr_fs_extra = 0;
 766         int err = 0, need_extend;
 767         int old_state;
 768         const unsigned int bs = td_min_bs(td);
 769         uint64_t fs = 0;
 770
 771         dprint(FD_FILE, "setup files\n");
 772
 773         old_state = td_bump_runstate(td, TD_SETTING_UP);
 774
 775         if (o->read_iolog_file)
 776                 goto done;
 777
 778         /*
 779          * if ioengine defines a setup() method, it's responsible for
 780          * opening the files and setting f->real_file_size to indicate
 781          * the valid range for that file.
 782          */
 783         if (td->io_ops->setup)
 784                 err = td->io_ops->setup(td);
 785         else
 786                 err = get_file_sizes(td);
 787
 788         if (err)
 789                 goto err_out;
 790
 791         /*
 792          * check sizes. if the files/devices do not exist and the size
 793          * isn't passed to fio, abort.
 794          */
 795         total_size = 0;
 796         for_each_file(td, f, i) {
 797                 if (f->real_file_size == -1ULL)
 798                         total_size = -1ULL;
 799                 else
 800                         total_size += f->real_file_size;
 801         }
 802
 803         if (o->fill_device)
 804                 td->fill_device_size = get_fs_free_counts(td);
 805
 806         /*
 807          * device/file sizes are zero and no size given, punt
 808          */
 809         if ((!total_size || total_size == -1ULL) && !o->size &&
 810             !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
 811             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
 812                 log_err("%s: you need to specify size=\n", o->name);
 813                 td_verror(td, EINVAL, "total_file_size");
 814                 goto err_out;
 815         }
 816
 817         /*
 818          * Calculate per-file size and potential extra size for the
 819          * first files, if needed.
 820          */
 821         if (!o->file_size_low && o->nr_files) {
 822                 uint64_t all_fs;
 823
 824                 fs = o->size / o->nr_files;
 825                 all_fs = fs * o->nr_files;
 826
 827                 if (all_fs < o->size)
 828                         nr_fs_extra = (o->size - all_fs) / bs;
 829         }
 830
 831         /*
 832          * now file sizes are known, so we can set ->io_size. if size= is
 833          * not given, ->io_size is just equal to ->real_file_size. if size
 834          * is given, ->io_size is size / nr_files.
 835          */
 836         extend_size = total_size = 0;
 837         need_extend = 0;
 838         for_each_file(td, f, i) {
 839                 f->file_offset = get_start_offset(td, f);
 840
 841                 if (!o->file_size_low) {
 842                         /*
 843                          * no file size range given, file size is equal to
 844                          * total size divided by number of files. If that is
 845                          * zero, set it to the real file size. If the size
 846                          * doesn't divide nicely with the min blocksize,
 847                          * make the first files bigger.
 848                          */
 849                         f->io_size = fs;
 850                         if (nr_fs_extra) {
 851                                 nr_fs_extra--;
 852                                 f->io_size += bs;
 853                         }
 854
 855                         if (!f->io_size)
 856                                 f->io_size = f->real_file_size - f->file_offset;
 857                 } else if (f->real_file_size < o->file_size_low ||
 858                            f->real_file_size > o->file_size_high) {
 859                         if (f->file_offset > o->file_size_low)
 860                                 goto err_offset;
 861                         /*
 862                          * file size given. if it's fixed, use that. if it's a
 863                          * range, generate a random size in-between.
 864                          */
 865                         if (o->file_size_low == o->file_size_high)
 866                                 f->io_size = o->file_size_low - f->file_offset;
 867                         else {
 868                                 f->io_size = get_rand_file_size(td)
 869                                                 - f->file_offset;
 870                         }
 871                 } else
 872                         f->io_size = f->real_file_size - f->file_offset;
 873
 874                 if (f->io_size == -1ULL)
 875                         total_size = -1ULL;
 876                 else {
 877                         if (o->size_percent)
 878                                 f->io_size = (f->io_size * o->size_percent) / 100;
 879                         total_size += f->io_size;
 880                 }
 881
 882                 if (f->filetype == FIO_TYPE_FILE &&
 883                     (f->io_size + f->file_offset) > f->real_file_size &&
 884                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 885                         if (!o->create_on_open) {
 886                                 need_extend++;
 887                                 extend_size += (f->io_size + f->file_offset);
 888                         } else
 889                                 f->real_file_size = f->io_size + f->file_offset;
 890                         fio_file_set_extend(f);
 891                 }
 892         }
 893
 894         if (!o->size || (total_size && o->size > total_size))
 895                 o->size = total_size;
 896
 897         if (o->size < td_min_bs(td)) {
 898                 log_err("fio: blocksize too large for data set\n");
 899                 goto err_out;
 900         }
 901
 902         /*
 903          * See if we need to extend some files
 904          */
 905         if (need_extend) {
 906                 temp_stall_ts = 1;
 907                 if (output_format == FIO_OUTPUT_NORMAL)
 908                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 909                                  " %lluMB)\n", o->name, need_extend,
 910                                         extend_size >> 20);
 911
 912                 for_each_file(td, f, i) {
 913                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 914
 915                         if (!fio_file_extend(f))
 916                                 continue;
 917
 918                         assert(f->filetype == FIO_TYPE_FILE);
 919                         fio_file_clear_extend(f);
 920                         if (!o->fill_device) {
 921                                 old_len = f->real_file_size;
 922                                 extend_len = f->io_size + f->file_offset -
 923                                                 old_len;
 924                         }
 925                         f->real_file_size = (f->io_size + f->file_offset);
 926                         err = extend_file(td, f);
 927                         if (err)
 928                                 break;
 929
 930                         err = __file_invalidate_cache(td, f, old_len,
 931                                                                 extend_len);
 932
 933                         /*
 934                          * Shut up static checker
 935                          */
 936                         if (f->fd != -1)
 937                                 close(f->fd);
 938
 939                         f->fd = -1;
 940                         if (err)
 941                                 break;
 942                 }
 943                 temp_stall_ts = 0;
 944         }
 945
 946         if (err)
 947                 goto err_out;
 948
 949         if (!o->zone_size)
 950                 o->zone_size = o->size;
 951
 952         /*
 953          * iolog already set the total io size, if we read back
 954          * stored entries.
 955          */
 956         if (!o->read_iolog_file) {
 957                 if (o->io_limit)
 958                         td->total_io_size = o->io_limit * o->loops;
 959                 else
 960                         td->total_io_size = o->size * o->loops;
 961         }
 962
 963 done:
 964         if (o->create_only)
 965                 td->done = 1;
 966
 967         td_restore_runstate(td, old_state);
 968         return 0;
 969 err_offset:
 970         log_err("%s: you need to specify valid offset=\n", o->name);
 971 err_out:
 972         td_restore_runstate(td, old_state);
 973         return 1;
 974 }
 975
 976 int pre_read_files(struct thread_data *td)
 977 {
 978         struct fio_file *f;
 979         unsigned int i;
 980
 981         dprint(FD_FILE, "pre_read files\n");
 982
 983         for_each_file(td, f, i) {
 984                 pre_read_file(td, f);
 985         }
 986
 987         return 1;
 988 }
 989
 990 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
 991 {
 992         unsigned int range_size, seed;
 993         unsigned long nranges;
 994         uint64_t fsize;
 995
 996         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
 997         fsize = min(f->real_file_size, f->io_size);
 998
 999         nranges = (fsize + range_size - 1) / range_size;
1000
1001         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1002         if (!td->o.rand_repeatable)
1003                 seed = td->rand_seeds[4];
1004
1005         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1006                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1007         else
1008                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1009
1010         return 1;
1011 }
1012
1013 static int init_rand_distribution(struct thread_data *td)
1014 {
1015         struct fio_file *f;
1016         unsigned int i;
1017         int state;
1018
1019         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1020                 return 0;
1021
1022         state = td_bump_runstate(td, TD_SETTING_UP);
1023
1024         for_each_file(td, f, i)
1025                 __init_rand_distribution(td, f);
1026
1027         td_restore_runstate(td, state);
1028
1029         return 1;
1030 }
1031
1032 int init_random_map(struct thread_data *td)
1033 {
1034         unsigned long long blocks;
1035         struct fio_file *f;
1036         unsigned int i;
1037
1038         if (init_rand_distribution(td))
1039                 return 0;
1040         if (!td_random(td))
1041                 return 0;
1042
1043         for_each_file(td, f, i) {
1044                 uint64_t fsize = min(f->real_file_size, f->io_size);
1045
1046                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1047
1048                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1049                         unsigned long seed;
1050
1051                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1052
1053                         if (!lfsr_init(&f->lfsr, blocks, seed, 0))
1054                                 continue;
1055                 } else if (!td->o.norandommap) {
1056                         f->io_axmap = axmap_new(blocks);
1057                         if (f->io_axmap)
1058                                 continue;
1059                 } else if (td->o.norandommap)
1060                         continue;
1061
1062                 if (!td->o.softrandommap) {
1063                         log_err("fio: failed allocating random map. If running"
1064                                 " a large number of jobs, try the 'norandommap'"
1065                                 " option or set 'softrandommap'. Or give"
1066                                 " a larger --alloc-size to fio.\n");
1067                         return 1;
1068                 }
1069
1070                 log_info("fio: file %s failed allocating random map. Running "
1071                          "job without.\n", f->file_name);
1072         }
1073
1074         return 0;
1075 }
1076
1077 void close_files(struct thread_data *td)
1078 {
1079         struct fio_file *f;
1080         unsigned int i;
1081
1082         for_each_file(td, f, i) {
1083                 if (fio_file_open(f))
1084                         td_io_close_file(td, f);
1085         }
1086 }
1087
1088 void close_and_free_files(struct thread_data *td)
1089 {
1090         struct fio_file *f;
1091         unsigned int i;
1092
1093         dprint(FD_FILE, "close files\n");
1094
1095         for_each_file(td, f, i) {
1096                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1097                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1098                         td_io_unlink_file(td, f);
1099                 }
1100
1101                 if (fio_file_open(f))
1102                         td_io_close_file(td, f);
1103
1104                 remove_file_hash(f);
1105
1106                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1107                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1108                         td_io_unlink_file(td, f);
1109                 }
1110
1111                 sfree(f->file_name);
1112                 f->file_name = NULL;
1113                 axmap_free(f->io_axmap);
1114                 f->io_axmap = NULL;
1115                 sfree(f);
1116         }
1117
1118         td->o.filename = NULL;
1119         free(td->files);
1120         free(td->file_locks);
1121         td->files_index = 0;
1122         td->files = NULL;
1123         td->file_locks = NULL;
1124         td->o.file_lock_mode = FILE_LOCK_NONE;
1125         td->o.nr_files = 0;
1126 }
1127
1128 static void get_file_type(struct fio_file *f)
1129 {
1130         struct stat sb;
1131
1132         if (!strcmp(f->file_name, "-"))
1133                 f->filetype = FIO_TYPE_PIPE;
1134         else
1135                 f->filetype = FIO_TYPE_FILE;
1136
1137         /* \\.\ is the device namespace in Windows, where every file is
1138          * a block device */
1139         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1140                 f->filetype = FIO_TYPE_BD;
1141
1142         if (!stat(f->file_name, &sb)) {
1143                 if (S_ISBLK(sb.st_mode))
1144                         f->filetype = FIO_TYPE_BD;
1145                 else if (S_ISCHR(sb.st_mode))
1146                         f->filetype = FIO_TYPE_CHAR;
1147                 else if (S_ISFIFO(sb.st_mode))
1148                         f->filetype = FIO_TYPE_PIPE;
1149         }
1150 }
1151
1152 static int __is_already_allocated(const char *fname)
1153 {
1154         struct flist_head *entry;
1155         char *filename;
1156
1157         if (flist_empty(&filename_list))
1158                 return 0;
1159
1160         flist_for_each(entry, &filename_list) {
1161                 filename = flist_entry(entry, struct file_name, list)->filename;
1162
1163                 if (strcmp(filename, fname) == 0)
1164                         return 1;
1165         }
1166
1167         return 0;
1168 }
1169
1170 static int is_already_allocated(const char *fname)
1171 {
1172         int ret;
1173
1174         fio_file_hash_lock();
1175         ret = __is_already_allocated(fname);
1176         fio_file_hash_unlock();
1177         return ret;
1178 }
1179
1180 static void set_already_allocated(const char *fname)
1181 {
1182         struct file_name *fn;
1183
1184         fn = malloc(sizeof(struct file_name));
1185         fn->filename = strdup(fname);
1186
1187         fio_file_hash_lock();
1188         if (!__is_already_allocated(fname)) {
1189                 flist_add_tail(&fn->list, &filename_list);
1190                 fn = NULL;
1191         }
1192         fio_file_hash_unlock();
1193
1194         if (fn) {
1195                 free(fn->filename);
1196                 free(fn);
1197         }
1198 }
1199
1200
1201 static void free_already_allocated(void)
1202 {
1203         struct flist_head *entry, *tmp;
1204         struct file_name *fn;
1205
1206         if (flist_empty(&filename_list))
1207                 return;
1208
1209         fio_file_hash_lock();
1210         flist_for_each_safe(entry, tmp, &filename_list) {
1211                 fn = flist_entry(entry, struct file_name, list);
1212                 free(fn->filename);
1213                 flist_del(&fn->list);
1214                 free(fn);
1215         }
1216
1217         fio_file_hash_unlock();
1218 }
1219
1220 static struct fio_file *alloc_new_file(struct thread_data *td)
1221 {
1222         struct fio_file *f;
1223
1224         f = smalloc(sizeof(*f));
1225         if (!f) {
1226                 log_err("fio: smalloc OOM\n");
1227                 assert(0);
1228                 return NULL;
1229         }
1230
1231         f->fd = -1;
1232         f->shadow_fd = -1;
1233         fio_file_reset(td, f);
1234         return f;
1235 }
1236
1237 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1238 {
1239         int cur_files = td->files_index;
1240         char file_name[PATH_MAX];
1241         struct fio_file *f;
1242         int len = 0;
1243
1244         dprint(FD_FILE, "add file %s\n", fname);
1245
1246         if (td->o.directory)
1247                 len = set_name_idx(file_name, td->o.directory, numjob);
1248
1249         sprintf(file_name + len, "%s", fname);
1250
1251         /* clean cloned siblings using existing files */
1252         if (numjob && is_already_allocated(file_name))
1253                 return 0;
1254
1255         f = alloc_new_file(td);
1256
1257         if (td->files_size <= td->files_index) {
1258                 unsigned int new_size = td->o.nr_files + 1;
1259
1260                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1261
1262                 td->files = realloc(td->files, new_size * sizeof(f));
1263                 if (td->files == NULL) {
1264                         log_err("fio: realloc OOM\n");
1265                         assert(0);
1266                 }
1267                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1268                         td->file_locks = realloc(td->file_locks, new_size);
1269                         if (!td->file_locks) {
1270                                 log_err("fio: realloc OOM\n");
1271                                 assert(0);
1272                         }
1273                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1274                 }
1275                 td->files_size = new_size;
1276         }
1277         td->files[cur_files] = f;
1278         f->fileno = cur_files;
1279
1280         /*
1281          * init function, io engine may not be loaded yet
1282          */
1283         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1284                 f->real_file_size = -1ULL;
1285
1286         f->file_name = smalloc_strdup(file_name);
1287         if (!f->file_name) {
1288                 log_err("fio: smalloc OOM\n");
1289                 assert(0);
1290         }
1291
1292         get_file_type(f);
1293
1294         switch (td->o.file_lock_mode) {
1295         case FILE_LOCK_NONE:
1296                 break;
1297         case FILE_LOCK_READWRITE:
1298                 f->rwlock = fio_rwlock_init();
1299                 break;
1300         case FILE_LOCK_EXCLUSIVE:
1301                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1302                 break;
1303         default:
1304                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1305                 assert(0);
1306         }
1307
1308         td->files_index++;
1309         if (f->filetype == FIO_TYPE_FILE)
1310                 td->nr_normal_files++;
1311
1312         set_already_allocated(file_name);
1313
1314         if (inc)
1315                 td->o.nr_files++;
1316
1317         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1318                                                         cur_files);
1319
1320         return cur_files;
1321 }
1322
1323 int add_file_exclusive(struct thread_data *td, const char *fname)
1324 {
1325         struct fio_file *f;
1326         unsigned int i;
1327
1328         for_each_file(td, f, i) {
1329                 if (!strcmp(f->file_name, fname))
1330                         return i;
1331         }
1332
1333         return add_file(td, fname, 0, 1);
1334 }
1335
1336 void get_file(struct fio_file *f)
1337 {
1338         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1339         assert(fio_file_open(f));
1340         f->references++;
1341 }
1342
1343 int put_file(struct thread_data *td, struct fio_file *f)
1344 {
1345         int f_ret = 0, ret = 0;
1346
1347         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1348
1349         if (!fio_file_open(f)) {
1350                 assert(f->fd == -1);
1351                 return 0;
1352         }
1353
1354         assert(f->references);
1355         if (--f->references)
1356                 return 0;
1357
1358         if (should_fsync(td) && td->o.fsync_on_close) {
1359                 f_ret = fsync(f->fd);
1360                 if (f_ret < 0)
1361                         f_ret = errno;
1362         }
1363
1364         if (td->io_ops->close_file)
1365                 ret = td->io_ops->close_file(td, f);
1366
1367         if (!ret)
1368                 ret = f_ret;
1369
1370         td->nr_open_files--;
1371         fio_file_clear_open(f);
1372         assert(f->fd == -1);
1373         return ret;
1374 }
1375
1376 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1377 {
1378         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1379                 return;
1380
1381         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1382                 if (ddir == DDIR_READ)
1383                         fio_rwlock_read(f->rwlock);
1384                 else
1385                         fio_rwlock_write(f->rwlock);
1386         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1387                 fio_mutex_down(f->lock);
1388
1389         td->file_locks[f->fileno] = td->o.file_lock_mode;
1390 }
1391
1392 void unlock_file(struct thread_data *td, struct fio_file *f)
1393 {
1394         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1395                 return;
1396
1397         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1398                 fio_rwlock_unlock(f->rwlock);
1399         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1400                 fio_mutex_up(f->lock);
1401
1402         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1403 }
1404
1405 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1406 {
1407         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1408                 return;
1409         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1410                 unlock_file(td, f);
1411 }
1412
1413 static int recurse_dir(struct thread_data *td, const char *dirname)
1414 {
1415         struct dirent *dir;
1416         int ret = 0;
1417         DIR *D;
1418
1419         D = opendir(dirname);
1420         if (!D) {
1421                 char buf[FIO_VERROR_SIZE];
1422
1423                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1424                 td_verror(td, errno, buf);
1425                 return 1;
1426         }
1427
1428         while ((dir = readdir(D)) != NULL) {
1429                 char full_path[PATH_MAX];
1430                 struct stat sb;
1431
1432                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1433                         continue;
1434
1435                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1436
1437                 if (lstat(full_path, &sb) == -1) {
1438                         if (errno != ENOENT) {
1439                                 td_verror(td, errno, "stat");
1440                                 ret = 1;
1441                                 break;
1442                         }
1443                 }
1444
1445                 if (S_ISREG(sb.st_mode)) {
1446                         add_file(td, full_path, 0, 1);
1447                         continue;
1448                 }
1449                 if (!S_ISDIR(sb.st_mode))
1450                         continue;
1451
1452                 ret = recurse_dir(td, full_path);
1453                 if (ret)
1454                         break;
1455         }
1456
1457         closedir(D);
1458         return ret;
1459 }
1460
1461 int add_dir_files(struct thread_data *td, const char *path)
1462 {
1463         int ret = recurse_dir(td, path);
1464
1465         if (!ret)
1466                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1467
1468         return ret;
1469 }
1470
1471 void dup_files(struct thread_data *td, struct thread_data *org)
1472 {
1473         struct fio_file *f;
1474         unsigned int i;
1475
1476         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1477
1478         if (!org->files)
1479                 return;
1480
1481         td->files = malloc(org->files_index * sizeof(f));
1482
1483         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1484                 td->file_locks = malloc(org->files_index);
1485
1486         for_each_file(org, f, i) {
1487                 struct fio_file *__f;
1488
1489                 __f = alloc_new_file(td);
1490
1491                 if (f->file_name) {
1492                         __f->file_name = smalloc_strdup(f->file_name);
1493                         if (!__f->file_name) {
1494                                 log_err("fio: smalloc OOM\n");
1495                                 assert(0);
1496                         }
1497
1498                         __f->filetype = f->filetype;
1499                 }
1500
1501                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1502                         __f->lock = f->lock;
1503                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1504                         __f->rwlock = f->rwlock;
1505
1506                 td->files[i] = __f;
1507         }
1508 }
1509
1510 /*
1511  * Returns the index that matches the filename, or -1 if not there
1512  */
1513 int get_fileno(struct thread_data *td, const char *fname)
1514 {
1515         struct fio_file *f;
1516         unsigned int i;
1517
1518         for_each_file(td, f, i)
1519                 if (!strcmp(f->file_name, fname))
1520                         return i;
1521
1522         return -1;
1523 }
1524
1525 /*
1526  * For log usage, where we add/open/close files automatically
1527  */
1528 void free_release_files(struct thread_data *td)
1529 {
1530         close_files(td);
1531         td->o.nr_files = 0;
1532         td->o.open_files = 0;
1533         td->files_index = 0;
1534         td->nr_normal_files = 0;
1535 }
1536
1537 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1538 {
1539         f->last_pos = f->file_offset;
1540         f->last_start = -1ULL;
1541         if (f->io_axmap)
1542                 axmap_reset(f->io_axmap);
1543         if (td->o.random_generator == FIO_RAND_GEN_LFSR)
1544                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1545 }
1546
1547 int fio_files_done(struct thread_data *td)
1548 {
1549         struct fio_file *f;
1550         unsigned int i;
1551
1552         for_each_file(td, f, i)
1553                 if (!fio_file_done(f))
1554                         return 0;
1555
1556         return 1;
1557 }
1558
1559 /* free memory used in initialization phase only */
1560 void filesetup_mem_free(void)
1561 {
1562         free_already_allocated();
1563 }