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 #ifdef CONFIG_ESX
 394         return 0;
 395 #endif
 396
 397         if (len == -1ULL)
 398                 len = f->io_size;
 399         if (off == -1ULL)
 400                 off = f->file_offset;
 401
 402         if (len == -1ULL || off == -1ULL)
 403                 return 0;
 404
 405         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 406                                                                 len);
 407
 408         if (td->io_ops->invalidate)
 409                 ret = td->io_ops->invalidate(td, f);
 410         else if (f->mmap_ptr) {
 411                 ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
 412 #ifdef FIO_MADV_FREE
 413                 if (f->filetype == FIO_TYPE_BD)
 414                         (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
 415 #endif
 416         } else if (f->filetype == FIO_TYPE_FILE) {
 417                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 418         } else if (f->filetype == FIO_TYPE_BD) {
 419                 ret = blockdev_invalidate_cache(f);
 420                 if (ret < 0 && errno == EACCES && geteuid()) {
 421                         if (!root_warn) {
 422                                 log_err("fio: only root may flush block "
 423                                         "devices. Cache flush bypassed!\n");
 424                                 root_warn = 1;
 425                         }
 426                         ret = 0;
 427                 }
 428         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 429                 ret = 0;
 430
 431         /*
 432          * Cache flushing isn't a fatal condition, and we know it will
 433          * happen on some platforms where we don't have the proper
 434          * function to flush eg block device caches. So just warn and
 435          * continue on our way.
 436          */
 437         if (ret) {
 438                 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
 439                 ret = 0;
 440         }
 441
 442         return 0;
 443
 444 }
 445
 446 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 447 {
 448         if (!fio_file_open(f))
 449                 return 0;
 450
 451         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 452 }
 453
 454 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 455 {
 456         int ret = 0;
 457
 458         dprint(FD_FILE, "fd close %s\n", f->file_name);
 459
 460         remove_file_hash(f);
 461
 462         if (close(f->fd) < 0)
 463                 ret = errno;
 464
 465         f->fd = -1;
 466
 467         if (f->shadow_fd != -1) {
 468                 close(f->shadow_fd);
 469                 f->shadow_fd = -1;
 470         }
 471
 472         f->engine_data = 0;
 473         return ret;
 474 }
 475
 476 int file_lookup_open(struct fio_file *f, int flags)
 477 {
 478         struct fio_file *__f;
 479         int from_hash;
 480
 481         __f = lookup_file_hash(f->file_name);
 482         if (__f) {
 483                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 484                 /*
 485                  * racy, need the __f->lock locked
 486                  */
 487                 f->lock = __f->lock;
 488                 from_hash = 1;
 489         } else {
 490                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 491                 from_hash = 0;
 492         }
 493
 494 #ifdef WIN32
 495         flags |= _O_BINARY;
 496 #endif
 497
 498         f->fd = open(f->file_name, flags, 0600);
 499         return from_hash;
 500 }
 501
 502 static int file_close_shadow_fds(struct thread_data *td)
 503 {
 504         struct fio_file *f;
 505         int num_closed = 0;
 506         unsigned int i;
 507
 508         for_each_file(td, f, i) {
 509                 if (f->shadow_fd == -1)
 510                         continue;
 511
 512                 close(f->shadow_fd);
 513                 f->shadow_fd = -1;
 514                 num_closed++;
 515         }
 516
 517         return num_closed;
 518 }
 519
 520 int generic_open_file(struct thread_data *td, struct fio_file *f)
 521 {
 522         int is_std = 0;
 523         int flags = 0;
 524         int from_hash = 0;
 525
 526         dprint(FD_FILE, "fd open %s\n", f->file_name);
 527
 528         if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
 529                 log_err("fio: trim only applies to block device\n");
 530                 return 1;
 531         }
 532
 533         if (!strcmp(f->file_name, "-")) {
 534                 if (td_rw(td)) {
 535                         log_err("fio: can't read/write to stdin/out\n");
 536                         return 1;
 537                 }
 538                 is_std = 1;
 539
 540                 /*
 541                  * move output logging to stderr, if we are writing to stdout
 542                  */
 543                 if (td_write(td))
 544                         f_out = stderr;
 545         }
 546
 547         if (td_trim(td))
 548                 goto skip_flags;
 549         if (td->o.odirect)
 550                 flags |= OS_O_DIRECT;
 551         if (td->o.oatomic) {
 552                 if (!FIO_O_ATOMIC) {
 553                         td_verror(td, EINVAL, "OS does not support atomic IO");
 554                         return 1;
 555                 }
 556                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
 557         }
 558         if (td->o.sync_io)
 559                 flags |= O_SYNC;
 560         if (td->o.create_on_open)
 561                 flags |= O_CREAT;
 562 skip_flags:
 563         if (f->filetype != FIO_TYPE_FILE)
 564                 flags |= FIO_O_NOATIME;
 565
 566 open_again:
 567         if (td_write(td)) {
 568                 if (!read_only)
 569                         flags |= O_RDWR;
 570
 571                 if (f->filetype == FIO_TYPE_FILE)
 572                         flags |= O_CREAT;
 573
 574                 if (is_std)
 575                         f->fd = dup(STDOUT_FILENO);
 576                 else
 577                         from_hash = file_lookup_open(f, flags);
 578         } else if (td_read(td)) {
 579                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 580                         flags |= O_RDWR;
 581                 else
 582                         flags |= O_RDONLY;
 583
 584                 if (is_std)
 585                         f->fd = dup(STDIN_FILENO);
 586                 else
 587                         from_hash = file_lookup_open(f, flags);
 588         } else { //td trim
 589                 flags |= O_RDWR;
 590                 from_hash = file_lookup_open(f, flags);
 591         }
 592
 593         if (f->fd == -1) {
 594                 char buf[FIO_VERROR_SIZE];
 595                 int __e = errno;
 596
 597                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 598                         flags &= ~FIO_O_NOATIME;
 599                         goto open_again;
 600                 }
 601                 if (__e == EMFILE && file_close_shadow_fds(td))
 602                         goto open_again;
 603
 604                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
 605
 606                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
 607                         log_err("fio: looks like your file system does not " \
 608                                 "support direct=1/buffered=0\n");
 609                 }
 610
 611                 td_verror(td, __e, buf);
 612                 return 1;
 613         }
 614
 615         if (!from_hash && f->fd != -1) {
 616                 if (add_file_hash(f)) {
 617                         int fio_unused ret;
 618
 619                         /*
 620                          * Stash away descriptor for later close. This is to
 621                          * work-around a "feature" on Linux, where a close of
 622                          * an fd that has been opened for write will trigger
 623                          * udev to call blkid to check partitions, fs id, etc.
 624                          * That pollutes the device cache, which can slow down
 625                          * unbuffered accesses.
 626                          */
 627                         if (f->shadow_fd == -1)
 628                                 f->shadow_fd = f->fd;
 629                         else {
 630                                 /*
 631                                  * OK to ignore, we haven't done anything
 632                                  * with it
 633                                  */
 634                                 ret = generic_close_file(td, f);
 635                         }
 636                         goto open_again;
 637                 }
 638         }
 639
 640         return 0;
 641 }
 642
 643 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 644 {
 645         return get_file_size(td, f);
 646 }
 647
 648 /*
 649  * open/close all files, so that ->real_file_size gets set
 650  */
 651 static int get_file_sizes(struct thread_data *td)
 652 {
 653         struct fio_file *f;
 654         unsigned int i;
 655         int err = 0;
 656
 657         for_each_file(td, f, i) {
 658                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 659                                                                 f->file_name);
 660
 661                 if (td_io_get_file_size(td, f)) {
 662                         if (td->error != ENOENT) {
 663                                 log_err("%s\n", td->verror);
 664                                 err = 1;
 665                                 break;
 666                         }
 667                         clear_error(td);
 668                 }
 669
 670                 if (f->real_file_size == -1ULL && td->o.size)
 671                         f->real_file_size = td->o.size / td->o.nr_files;
 672         }
 673
 674         return err;
 675 }
 676
 677 struct fio_mount {
 678         struct flist_head list;
 679         const char *base;
 680         char __base[256];
 681         unsigned int key;
 682 };
 683
 684 /*
 685  * Get free number of bytes for each file on each unique mount.
 686  */
 687 static unsigned long long get_fs_free_counts(struct thread_data *td)
 688 {
 689         struct flist_head *n, *tmp;
 690         unsigned long long ret = 0;
 691         struct fio_mount *fm;
 692         FLIST_HEAD(list);
 693         struct fio_file *f;
 694         unsigned int i;
 695
 696         for_each_file(td, f, i) {
 697                 struct stat sb;
 698                 char buf[256];
 699
 700                 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
 701                         if (f->real_file_size != -1ULL)
 702                                 ret += f->real_file_size;
 703                         continue;
 704                 } else if (f->filetype != FIO_TYPE_FILE)
 705                         continue;
 706
 707                 buf[255] = '\0';
 708                 strncpy(buf, f->file_name, 255);
 709
 710                 if (stat(buf, &sb) < 0) {
 711                         if (errno != ENOENT)
 712                                 break;
 713                         strcpy(buf, ".");
 714                         if (stat(buf, &sb) < 0)
 715                                 break;
 716                 }
 717
 718                 fm = NULL;
 719                 flist_for_each(n, &list) {
 720                         fm = flist_entry(n, struct fio_mount, list);
 721                         if (fm->key == sb.st_dev)
 722                                 break;
 723
 724                         fm = NULL;
 725                 }
 726
 727                 if (fm)
 728                         continue;
 729
 730                 fm = calloc(1, sizeof(*fm));
 731                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
 732                 fm->base = basename(fm->__base);
 733                 fm->key = sb.st_dev;
 734                 flist_add(&fm->list, &list);
 735         }
 736
 737         flist_for_each_safe(n, tmp, &list) {
 738                 unsigned long long sz;
 739
 740                 fm = flist_entry(n, struct fio_mount, list);
 741                 flist_del(&fm->list);
 742
 743                 sz = get_fs_size(fm->base);
 744                 if (sz && sz != -1ULL)
 745                         ret += sz;
 746
 747                 free(fm);
 748         }
 749
 750         return ret;
 751 }
 752
 753 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 754 {
 755         struct thread_options *o = &td->o;
 756
 757         if (o->file_append && f->filetype == FIO_TYPE_FILE)
 758                 return f->real_file_size;
 759
 760         return td->o.start_offset +
 761                 td->subjob_number * td->o.offset_increment;
 762 }
 763
 764 /*
 765  * Open the files and setup files sizes, creating files if necessary.
 766  */
 767 int setup_files(struct thread_data *td)
 768 {
 769         unsigned long long total_size, extend_size;
 770         struct thread_options *o = &td->o;
 771         struct fio_file *f;
 772         unsigned int i, nr_fs_extra = 0;
 773         int err = 0, need_extend;
 774         int old_state;
 775         const unsigned int bs = td_min_bs(td);
 776         uint64_t fs = 0;
 777
 778         dprint(FD_FILE, "setup files\n");
 779
 780         old_state = td_bump_runstate(td, TD_SETTING_UP);
 781
 782         if (o->read_iolog_file)
 783                 goto done;
 784
 785         /*
 786          * if ioengine defines a setup() method, it's responsible for
 787          * opening the files and setting f->real_file_size to indicate
 788          * the valid range for that file.
 789          */
 790         if (td->io_ops->setup)
 791                 err = td->io_ops->setup(td);
 792         else
 793                 err = get_file_sizes(td);
 794
 795         if (err)
 796                 goto err_out;
 797
 798         /*
 799          * check sizes. if the files/devices do not exist and the size
 800          * isn't passed to fio, abort.
 801          */
 802         total_size = 0;
 803         for_each_file(td, f, i) {
 804                 if (f->real_file_size == -1ULL)
 805                         total_size = -1ULL;
 806                 else
 807                         total_size += f->real_file_size;
 808         }
 809
 810         if (o->fill_device)
 811                 td->fill_device_size = get_fs_free_counts(td);
 812
 813         /*
 814          * device/file sizes are zero and no size given, punt
 815          */
 816         if ((!total_size || total_size == -1ULL) && !o->size &&
 817             !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
 818             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
 819                 log_err("%s: you need to specify size=\n", o->name);
 820                 td_verror(td, EINVAL, "total_file_size");
 821                 goto err_out;
 822         }
 823
 824         /*
 825          * Calculate per-file size and potential extra size for the
 826          * first files, if needed.
 827          */
 828         if (!o->file_size_low && o->nr_files) {
 829                 uint64_t all_fs;
 830
 831                 fs = o->size / o->nr_files;
 832                 all_fs = fs * o->nr_files;
 833
 834                 if (all_fs < o->size)
 835                         nr_fs_extra = (o->size - all_fs) / bs;
 836         }
 837
 838         /*
 839          * now file sizes are known, so we can set ->io_size. if size= is
 840          * not given, ->io_size is just equal to ->real_file_size. if size
 841          * is given, ->io_size is size / nr_files.
 842          */
 843         extend_size = total_size = 0;
 844         need_extend = 0;
 845         for_each_file(td, f, i) {
 846                 f->file_offset = get_start_offset(td, f);
 847
 848                 if (!o->file_size_low) {
 849                         /*
 850                          * no file size range given, file size is equal to
 851                          * total size divided by number of files. If that is
 852                          * zero, set it to the real file size. If the size
 853                          * doesn't divide nicely with the min blocksize,
 854                          * make the first files bigger.
 855                          */
 856                         f->io_size = fs;
 857                         if (nr_fs_extra) {
 858                                 nr_fs_extra--;
 859                                 f->io_size += bs;
 860                         }
 861
 862                         if (!f->io_size)
 863                                 f->io_size = f->real_file_size - f->file_offset;
 864                 } else if (f->real_file_size < o->file_size_low ||
 865                            f->real_file_size > o->file_size_high) {
 866                         if (f->file_offset > o->file_size_low)
 867                                 goto err_offset;
 868                         /*
 869                          * file size given. if it's fixed, use that. if it's a
 870                          * range, generate a random size in-between.
 871                          */
 872                         if (o->file_size_low == o->file_size_high)
 873                                 f->io_size = o->file_size_low - f->file_offset;
 874                         else {
 875                                 f->io_size = get_rand_file_size(td)
 876                                                 - f->file_offset;
 877                         }
 878                 } else
 879                         f->io_size = f->real_file_size - f->file_offset;
 880
 881                 if (f->io_size == -1ULL)
 882                         total_size = -1ULL;
 883                 else {
 884                         if (o->size_percent)
 885                                 f->io_size = (f->io_size * o->size_percent) / 100;
 886                         total_size += f->io_size;
 887                 }
 888
 889                 if (f->filetype == FIO_TYPE_FILE &&
 890                     (f->io_size + f->file_offset) > f->real_file_size &&
 891                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 892                         if (!o->create_on_open) {
 893                                 need_extend++;
 894                                 extend_size += (f->io_size + f->file_offset);
 895                         } else
 896                                 f->real_file_size = f->io_size + f->file_offset;
 897                         fio_file_set_extend(f);
 898                 }
 899         }
 900
 901         if (!o->size || o->size > total_size)
 902                 o->size = total_size;
 903
 904         if (o->size < td_min_bs(td)) {
 905                 log_err("fio: blocksize too large for data set\n");
 906                 goto err_out;
 907         }
 908
 909         /*
 910          * See if we need to extend some files
 911          */
 912         if (need_extend) {
 913                 temp_stall_ts = 1;
 914                 if (output_format == FIO_OUTPUT_NORMAL)
 915                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 916                                  " %lluMB)\n", o->name, need_extend,
 917                                         extend_size >> 20);
 918
 919                 for_each_file(td, f, i) {
 920                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 921
 922                         if (!fio_file_extend(f))
 923                                 continue;
 924
 925                         assert(f->filetype == FIO_TYPE_FILE);
 926                         fio_file_clear_extend(f);
 927                         if (!o->fill_device) {
 928                                 old_len = f->real_file_size;
 929                                 extend_len = f->io_size + f->file_offset -
 930                                                 old_len;
 931                         }
 932                         f->real_file_size = (f->io_size + f->file_offset);
 933                         err = extend_file(td, f);
 934                         if (err)
 935                                 break;
 936
 937                         err = __file_invalidate_cache(td, f, old_len,
 938                                                                 extend_len);
 939
 940                         /*
 941                          * Shut up static checker
 942                          */
 943                         if (f->fd != -1)
 944                                 close(f->fd);
 945
 946                         f->fd = -1;
 947                         if (err)
 948                                 break;
 949                 }
 950                 temp_stall_ts = 0;
 951         }
 952
 953         if (err)
 954                 goto err_out;
 955
 956         if (!o->zone_size)
 957                 o->zone_size = o->size;
 958
 959         /*
 960          * iolog already set the total io size, if we read back
 961          * stored entries.
 962          */
 963         if (!o->read_iolog_file) {
 964                 if (o->io_limit)
 965                         td->total_io_size = o->io_limit * o->loops;
 966                 else
 967                         td->total_io_size = o->size * o->loops;
 968         }
 969
 970 done:
 971         if (o->create_only)
 972                 td->done = 1;
 973
 974         td_restore_runstate(td, old_state);
 975         return 0;
 976 err_offset:
 977         log_err("%s: you need to specify valid offset=\n", o->name);
 978 err_out:
 979         td_restore_runstate(td, old_state);
 980         return 1;
 981 }
 982
 983 int pre_read_files(struct thread_data *td)
 984 {
 985         struct fio_file *f;
 986         unsigned int i;
 987
 988         dprint(FD_FILE, "pre_read files\n");
 989
 990         for_each_file(td, f, i) {
 991                 pre_read_file(td, f);
 992         }
 993
 994         return 1;
 995 }
 996
 997 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
 998 {
 999         unsigned int range_size, seed;
1000         unsigned long nranges;
1001         uint64_t file_size;
1002
1003         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1004         file_size = min(f->real_file_size, f->io_size);
1005
1006         nranges = (file_size + range_size - 1) / range_size;
1007
1008         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1009         if (!td->o.rand_repeatable)
1010                 seed = td->rand_seeds[4];
1011
1012         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1013                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1014         else
1015                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1016
1017         return 1;
1018 }
1019
1020 static int init_rand_distribution(struct thread_data *td)
1021 {
1022         struct fio_file *f;
1023         unsigned int i;
1024         int state;
1025
1026         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1027                 return 0;
1028
1029         state = td_bump_runstate(td, TD_SETTING_UP);
1030
1031         for_each_file(td, f, i)
1032                 __init_rand_distribution(td, f);
1033
1034         td_restore_runstate(td, state);
1035
1036         return 1;
1037 }
1038
1039 int init_random_map(struct thread_data *td)
1040 {
1041         unsigned long long blocks;
1042         struct fio_file *f;
1043         unsigned int i;
1044
1045         if (init_rand_distribution(td))
1046                 return 0;
1047         if (!td_random(td))
1048                 return 0;
1049
1050         for_each_file(td, f, i) {
1051                 uint64_t file_size = min(f->real_file_size, f->io_size);
1052
1053                 blocks = file_size / (unsigned long long) td->o.rw_min_bs;
1054
1055                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1056                         unsigned long seed;
1057
1058                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1059
1060                         if (!lfsr_init(&f->lfsr, blocks, seed, 0))
1061                                 continue;
1062                 } else if (!td->o.norandommap) {
1063                         f->io_axmap = axmap_new(blocks);
1064                         if (f->io_axmap)
1065                                 continue;
1066                 } else if (td->o.norandommap)
1067                         continue;
1068
1069                 if (!td->o.softrandommap) {
1070                         log_err("fio: failed allocating random map. If running"
1071                                 " a large number of jobs, try the 'norandommap'"
1072                                 " option or set 'softrandommap'. Or give"
1073                                 " a larger --alloc-size to fio.\n");
1074                         return 1;
1075                 }
1076
1077                 log_info("fio: file %s failed allocating random map. Running "
1078                          "job without.\n", f->file_name);
1079         }
1080
1081         return 0;
1082 }
1083
1084 void close_files(struct thread_data *td)
1085 {
1086         struct fio_file *f;
1087         unsigned int i;
1088
1089         for_each_file(td, f, i) {
1090                 if (fio_file_open(f))
1091                         td_io_close_file(td, f);
1092         }
1093 }
1094
1095 void close_and_free_files(struct thread_data *td)
1096 {
1097         struct fio_file *f;
1098         unsigned int i;
1099
1100         dprint(FD_FILE, "close files\n");
1101
1102         for_each_file(td, f, i) {
1103                 if (fio_file_open(f))
1104                         td_io_close_file(td, f);
1105
1106                 remove_file_hash(f);
1107
1108                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1109                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1110                         unlink(f->file_name);
1111                 }
1112
1113                 sfree(f->file_name);
1114                 f->file_name = NULL;
1115                 axmap_free(f->io_axmap);
1116                 f->io_axmap = NULL;
1117                 sfree(f);
1118         }
1119
1120         td->o.filename = NULL;
1121         free(td->files);
1122         free(td->file_locks);
1123         td->files_index = 0;
1124         td->files = NULL;
1125         td->file_locks = NULL;
1126         td->o.file_lock_mode = FILE_LOCK_NONE;
1127         td->o.nr_files = 0;
1128 }
1129
1130 static void get_file_type(struct fio_file *f)
1131 {
1132         struct stat sb;
1133
1134         if (!strcmp(f->file_name, "-"))
1135                 f->filetype = FIO_TYPE_PIPE;
1136         else
1137                 f->filetype = FIO_TYPE_FILE;
1138
1139         /* \\.\ is the device namespace in Windows, where every file is
1140          * a block device */
1141         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1142                 f->filetype = FIO_TYPE_BD;
1143
1144         if (!stat(f->file_name, &sb)) {
1145                 if (S_ISBLK(sb.st_mode))
1146                         f->filetype = FIO_TYPE_BD;
1147                 else if (S_ISCHR(sb.st_mode))
1148                         f->filetype = FIO_TYPE_CHAR;
1149                 else if (S_ISFIFO(sb.st_mode))
1150                         f->filetype = FIO_TYPE_PIPE;
1151         }
1152 }
1153
1154 static int __is_already_allocated(const char *fname)
1155 {
1156         struct flist_head *entry;
1157         char *filename;
1158
1159         if (flist_empty(&filename_list))
1160                 return 0;
1161
1162         flist_for_each(entry, &filename_list) {
1163                 filename = flist_entry(entry, struct file_name, list)->filename;
1164
1165                 if (strcmp(filename, fname) == 0)
1166                         return 1;
1167         }
1168
1169         return 0;
1170 }
1171
1172 static int is_already_allocated(const char *fname)
1173 {
1174         int ret;
1175
1176         fio_file_hash_lock();
1177         ret = __is_already_allocated(fname);
1178         fio_file_hash_unlock();
1179         return ret;
1180 }
1181
1182 static void set_already_allocated(const char *fname)
1183 {
1184         struct file_name *fn;
1185
1186         fn = malloc(sizeof(struct file_name));
1187         fn->filename = strdup(fname);
1188
1189         fio_file_hash_lock();
1190         if (!__is_already_allocated(fname)) {
1191                 flist_add_tail(&fn->list, &filename_list);
1192                 fn = NULL;
1193         }
1194         fio_file_hash_unlock();
1195
1196         if (fn) {
1197                 free(fn->filename);
1198                 free(fn);
1199         }
1200 }
1201
1202
1203 static void free_already_allocated(void)
1204 {
1205         struct flist_head *entry, *tmp;
1206         struct file_name *fn;
1207
1208         if (flist_empty(&filename_list))
1209                 return;
1210
1211         fio_file_hash_lock();
1212         flist_for_each_safe(entry, tmp, &filename_list) {
1213                 fn = flist_entry(entry, struct file_name, list);
1214                 free(fn->filename);
1215                 flist_del(&fn->list);
1216                 free(fn);
1217         }
1218
1219         fio_file_hash_unlock();
1220 }
1221
1222 static struct fio_file *alloc_new_file(struct thread_data *td)
1223 {
1224         struct fio_file *f;
1225
1226         f = smalloc(sizeof(*f));
1227         if (!f) {
1228                 log_err("fio: smalloc OOM\n");
1229                 assert(0);
1230                 return NULL;
1231         }
1232
1233         f->fd = -1;
1234         f->shadow_fd = -1;
1235         fio_file_reset(td, f);
1236         return f;
1237 }
1238
1239 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1240 {
1241         int cur_files = td->files_index;
1242         char file_name[PATH_MAX];
1243         struct fio_file *f;
1244         int len = 0;
1245
1246         dprint(FD_FILE, "add file %s\n", fname);
1247
1248         if (td->o.directory)
1249                 len = set_name_idx(file_name, td->o.directory, numjob);
1250
1251         sprintf(file_name + len, "%s", fname);
1252
1253         /* clean cloned siblings using existing files */
1254         if (numjob && is_already_allocated(file_name))
1255                 return 0;
1256
1257         f = alloc_new_file(td);
1258
1259         if (td->files_size <= td->files_index) {
1260                 unsigned int new_size = td->o.nr_files + 1;
1261
1262                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1263
1264                 td->files = realloc(td->files, new_size * sizeof(f));
1265                 if (td->files == NULL) {
1266                         log_err("fio: realloc OOM\n");
1267                         assert(0);
1268                 }
1269                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1270                         td->file_locks = realloc(td->file_locks, new_size);
1271                         if (!td->file_locks) {
1272                                 log_err("fio: realloc OOM\n");
1273                                 assert(0);
1274                         }
1275                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1276                 }
1277                 td->files_size = new_size;
1278         }
1279         td->files[cur_files] = f;
1280         f->fileno = cur_files;
1281
1282         /*
1283          * init function, io engine may not be loaded yet
1284          */
1285         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1286                 f->real_file_size = -1ULL;
1287
1288         f->file_name = smalloc_strdup(file_name);
1289         if (!f->file_name) {
1290                 log_err("fio: smalloc OOM\n");
1291                 assert(0);
1292         }
1293
1294         get_file_type(f);
1295
1296         switch (td->o.file_lock_mode) {
1297         case FILE_LOCK_NONE:
1298                 break;
1299         case FILE_LOCK_READWRITE:
1300                 f->rwlock = fio_rwlock_init();
1301                 break;
1302         case FILE_LOCK_EXCLUSIVE:
1303                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1304                 break;
1305         default:
1306                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1307                 assert(0);
1308         }
1309
1310         td->files_index++;
1311         if (f->filetype == FIO_TYPE_FILE)
1312                 td->nr_normal_files++;
1313
1314         set_already_allocated(file_name);
1315
1316         if (inc)
1317                 td->o.nr_files++;
1318
1319         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1320                                                         cur_files);
1321
1322         return cur_files;
1323 }
1324
1325 int add_file_exclusive(struct thread_data *td, const char *fname)
1326 {
1327         struct fio_file *f;
1328         unsigned int i;
1329
1330         for_each_file(td, f, i) {
1331                 if (!strcmp(f->file_name, fname))
1332                         return i;
1333         }
1334
1335         return add_file(td, fname, 0, 1);
1336 }
1337
1338 void get_file(struct fio_file *f)
1339 {
1340         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1341         assert(fio_file_open(f));
1342         f->references++;
1343 }
1344
1345 int put_file(struct thread_data *td, struct fio_file *f)
1346 {
1347         int f_ret = 0, ret = 0;
1348
1349         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1350
1351         if (!fio_file_open(f)) {
1352                 assert(f->fd == -1);
1353                 return 0;
1354         }
1355
1356         assert(f->references);
1357         if (--f->references)
1358                 return 0;
1359
1360         if (should_fsync(td) && td->o.fsync_on_close) {
1361                 f_ret = fsync(f->fd);
1362                 if (f_ret < 0)
1363                         f_ret = errno;
1364         }
1365
1366         if (td->io_ops->close_file)
1367                 ret = td->io_ops->close_file(td, f);
1368
1369         if (!ret)
1370                 ret = f_ret;
1371
1372         td->nr_open_files--;
1373         fio_file_clear_open(f);
1374         assert(f->fd == -1);
1375         return ret;
1376 }
1377
1378 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1379 {
1380         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1381                 return;
1382
1383         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1384                 if (ddir == DDIR_READ)
1385                         fio_rwlock_read(f->rwlock);
1386                 else
1387                         fio_rwlock_write(f->rwlock);
1388         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1389                 fio_mutex_down(f->lock);
1390
1391         td->file_locks[f->fileno] = td->o.file_lock_mode;
1392 }
1393
1394 void unlock_file(struct thread_data *td, struct fio_file *f)
1395 {
1396         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1397                 return;
1398
1399         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1400                 fio_rwlock_unlock(f->rwlock);
1401         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1402                 fio_mutex_up(f->lock);
1403
1404         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1405 }
1406
1407 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1408 {
1409         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1410                 return;
1411         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1412                 unlock_file(td, f);
1413 }
1414
1415 static int recurse_dir(struct thread_data *td, const char *dirname)
1416 {
1417         struct dirent *dir;
1418         int ret = 0;
1419         DIR *D;
1420
1421         D = opendir(dirname);
1422         if (!D) {
1423                 char buf[FIO_VERROR_SIZE];
1424
1425                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1426                 td_verror(td, errno, buf);
1427                 return 1;
1428         }
1429
1430         while ((dir = readdir(D)) != NULL) {
1431                 char full_path[PATH_MAX];
1432                 struct stat sb;
1433
1434                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1435                         continue;
1436
1437                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1438
1439                 if (lstat(full_path, &sb) == -1) {
1440                         if (errno != ENOENT) {
1441                                 td_verror(td, errno, "stat");
1442                                 ret = 1;
1443                                 break;
1444                         }
1445                 }
1446
1447                 if (S_ISREG(sb.st_mode)) {
1448                         add_file(td, full_path, 0, 1);
1449                         continue;
1450                 }
1451                 if (!S_ISDIR(sb.st_mode))
1452                         continue;
1453
1454                 ret = recurse_dir(td, full_path);
1455                 if (ret)
1456                         break;
1457         }
1458
1459         closedir(D);
1460         return ret;
1461 }
1462
1463 int add_dir_files(struct thread_data *td, const char *path)
1464 {
1465         int ret = recurse_dir(td, path);
1466
1467         if (!ret)
1468                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1469
1470         return ret;
1471 }
1472
1473 void dup_files(struct thread_data *td, struct thread_data *org)
1474 {
1475         struct fio_file *f;
1476         unsigned int i;
1477
1478         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1479
1480         if (!org->files)
1481                 return;
1482
1483         td->files = malloc(org->files_index * sizeof(f));
1484
1485         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1486                 td->file_locks = malloc(org->files_index);
1487
1488         for_each_file(org, f, i) {
1489                 struct fio_file *__f;
1490
1491                 __f = alloc_new_file(td);
1492
1493                 if (f->file_name) {
1494                         __f->file_name = smalloc_strdup(f->file_name);
1495                         if (!__f->file_name) {
1496                                 log_err("fio: smalloc OOM\n");
1497                                 assert(0);
1498                         }
1499
1500                         __f->filetype = f->filetype;
1501                 }
1502
1503                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1504                         __f->lock = f->lock;
1505                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1506                         __f->rwlock = f->rwlock;
1507
1508                 td->files[i] = __f;
1509         }
1510 }
1511
1512 /*
1513  * Returns the index that matches the filename, or -1 if not there
1514  */
1515 int get_fileno(struct thread_data *td, const char *fname)
1516 {
1517         struct fio_file *f;
1518         unsigned int i;
1519
1520         for_each_file(td, f, i)
1521                 if (!strcmp(f->file_name, fname))
1522                         return i;
1523
1524         return -1;
1525 }
1526
1527 /*
1528  * For log usage, where we add/open/close files automatically
1529  */
1530 void free_release_files(struct thread_data *td)
1531 {
1532         close_files(td);
1533         td->o.nr_files = 0;
1534         td->o.open_files = 0;
1535         td->files_index = 0;
1536         td->nr_normal_files = 0;
1537 }
1538
1539 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1540 {
1541         f->last_pos = f->file_offset;
1542         f->last_start = -1ULL;
1543         if (f->io_axmap)
1544                 axmap_reset(f->io_axmap);
1545         if (td->o.random_generator == FIO_RAND_GEN_LFSR)
1546                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1547 }
1548
1549 int fio_files_done(struct thread_data *td)
1550 {
1551         struct fio_file *f;
1552         unsigned int i;
1553
1554         for_each_file(td, f, i)
1555                 if (!fio_file_done(f))
1556                         return 0;
1557
1558         return 1;
1559 }
1560
1561 /* free memory used in initialization phase only */
1562 void filesetup_mem_free(void)
1563 {
1564         free_already_allocated();
1565 }