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