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_ioengine_flagged(td, 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                 int ret;
  62
  63                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
  64
  65                 ret = td_io_unlink_file(td, f);
  66                 if (ret != 0 && ret != ENOENT) {
  67                         td_verror(td, errno, "unlink");
  68                         return 1;
  69                 }
  70         }
  71
  72         flags = O_WRONLY;
  73         if (td->o.allow_create)
  74                 flags |= O_CREAT;
  75         if (new_layout)
  76                 flags |= O_TRUNC;
  77
  78 #ifdef WIN32
  79         flags |= _O_BINARY;
  80 #endif
  81
  82         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  83         f->fd = open(f->file_name, flags, 0644);
  84         if (f->fd < 0) {
  85                 int err = errno;
  86
  87                 if (err == ENOENT && !td->o.allow_create)
  88                         log_err("fio: file creation disallowed by "
  89                                         "allow_file_create=0\n");
  90                 else
  91                         td_verror(td, err, "open");
  92                 return 1;
  93         }
  94
  95 #ifdef CONFIG_POSIX_FALLOCATE
  96         if (!td->o.fill_device) {
  97                 switch (td->o.fallocate_mode) {
  98                 case FIO_FALLOCATE_NONE:
  99                         break;
 100                 case FIO_FALLOCATE_POSIX:
 101                         dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
 102                                  f->file_name,
 103                                  (unsigned long long) f->real_file_size);
 104
 105                         r = posix_fallocate(f->fd, 0, f->real_file_size);
 106                         if (r > 0) {
 107                                 log_err("fio: posix_fallocate fails: %s\n",
 108                                                 strerror(r));
 109                         }
 110                         break;
 111 #ifdef CONFIG_LINUX_FALLOCATE
 112                 case FIO_FALLOCATE_KEEP_SIZE:
 113                         dprint(FD_FILE,
 114                                 "fallocate(FALLOC_FL_KEEP_SIZE) "
 115                                 "file %s size %llu\n", f->file_name,
 116                                 (unsigned long long) f->real_file_size);
 117
 118                         r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
 119                                         f->real_file_size);
 120                         if (r != 0)
 121                                 td_verror(td, errno, "fallocate");
 122
 123                         break;
 124 #endif /* CONFIG_LINUX_FALLOCATE */
 125                 default:
 126                         log_err("fio: unknown fallocate mode: %d\n",
 127                                 td->o.fallocate_mode);
 128                         assert(0);
 129                 }
 130         }
 131 #endif /* CONFIG_POSIX_FALLOCATE */
 132
 133         if (!new_layout)
 134                 goto done;
 135
 136         /*
 137          * The size will be -1ULL when fill_device is used, so don't truncate
 138          * or fallocate this file, just write it
 139          */
 140         if (!td->o.fill_device) {
 141                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
 142                                         (unsigned long long) f->real_file_size);
 143                 if (ftruncate(f->fd, f->real_file_size) == -1) {
 144                         if (errno != EFBIG) {
 145                                 td_verror(td, errno, "ftruncate");
 146                                 goto err;
 147                         }
 148                 }
 149         }
 150
 151         b = malloc(td->o.max_bs[DDIR_WRITE]);
 152
 153         left = f->real_file_size;
 154         while (left && !td->terminate) {
 155                 bs = td->o.max_bs[DDIR_WRITE];
 156                 if (bs > left)
 157                         bs = left;
 158
 159                 fill_io_buffer(td, b, bs, bs);
 160
 161                 r = write(f->fd, b, bs);
 162
 163                 if (r > 0) {
 164                         left -= r;
 165                         continue;
 166                 } else {
 167                         if (r < 0) {
 168                                 int __e = errno;
 169
 170                                 if (__e == ENOSPC) {
 171                                         if (td->o.fill_device)
 172                                                 break;
 173                                         log_info("fio: ENOSPC on laying out "
 174                                                  "file, stopping\n");
 175                                         break;
 176                                 }
 177                                 td_verror(td, errno, "write");
 178                         } else
 179                                 td_verror(td, EIO, "write");
 180
 181                         break;
 182                 }
 183         }
 184
 185         if (td->terminate) {
 186                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 187                 td_io_unlink_file(td, f);
 188         } else if (td->o.create_fsync) {
 189                 if (fsync(f->fd) < 0) {
 190                         td_verror(td, errno, "fsync");
 191                         goto err;
 192                 }
 193         }
 194         if (td->o.fill_device && !td_write(td)) {
 195                 fio_file_clear_size_known(f);
 196                 if (td_io_get_file_size(td, f))
 197                         goto err;
 198                 if (f->io_size > f->real_file_size)
 199                         f->io_size = f->real_file_size;
 200         }
 201
 202         free(b);
 203 done:
 204         return 0;
 205 err:
 206         close(f->fd);
 207         f->fd = -1;
 208         if (b)
 209                 free(b);
 210         return 1;
 211 }
 212
 213 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 214 {
 215         int ret = 0, r, did_open = 0, old_runstate;
 216         unsigned long long left;
 217         unsigned int bs;
 218         char *b;
 219
 220         if (td_ioengine_flagged(td, FIO_PIPEIO))
 221                 return 0;
 222
 223         if (!fio_file_open(f)) {
 224                 if (td->io_ops->open_file(td, f)) {
 225                         log_err("fio: cannot pre-read, failed to open file\n");
 226                         return 1;
 227                 }
 228                 did_open = 1;
 229         }
 230
 231         old_runstate = td_bump_runstate(td, TD_PRE_READING);
 232
 233         bs = td->o.max_bs[DDIR_READ];
 234         b = malloc(bs);
 235         memset(b, 0, bs);
 236
 237         if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
 238                 td_verror(td, errno, "lseek");
 239                 log_err("fio: failed to lseek pre-read file\n");
 240                 ret = 1;
 241                 goto error;
 242         }
 243
 244         left = f->io_size;
 245
 246         while (left && !td->terminate) {
 247                 if (bs > left)
 248                         bs = left;
 249
 250                 r = read(f->fd, b, bs);
 251
 252                 if (r == (int) bs) {
 253                         left -= bs;
 254                         continue;
 255                 } else {
 256                         td_verror(td, EIO, "pre_read");
 257                         break;
 258                 }
 259         }
 260
 261 error:
 262         td_restore_runstate(td, old_runstate);
 263
 264         if (did_open)
 265                 td->io_ops->close_file(td, f);
 266
 267         free(b);
 268         return ret;
 269 }
 270
 271 unsigned long long get_rand_file_size(struct thread_data *td)
 272 {
 273         unsigned long long ret, sized;
 274         uint64_t frand_max;
 275         unsigned long r;
 276
 277         frand_max = rand_max(&td->file_size_state);
 278         r = __rand(&td->file_size_state);
 279         sized = td->o.file_size_high - td->o.file_size_low;
 280         ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
 281         ret += td->o.file_size_low;
 282         ret -= (ret % td->o.rw_min_bs);
 283         return ret;
 284 }
 285
 286 static int file_size(struct thread_data *td, struct fio_file *f)
 287 {
 288         struct stat st;
 289
 290         if (stat(f->file_name, &st) == -1) {
 291                 td_verror(td, errno, "fstat");
 292                 return 1;
 293         }
 294
 295         f->real_file_size = st.st_size;
 296         return 0;
 297 }
 298
 299 static int bdev_size(struct thread_data *td, struct fio_file *f)
 300 {
 301         unsigned long long bytes = 0;
 302         int r;
 303
 304         if (td->io_ops->open_file(td, f)) {
 305                 log_err("fio: failed opening blockdev %s for size check\n",
 306                         f->file_name);
 307                 return 1;
 308         }
 309
 310         r = blockdev_size(f, &bytes);
 311         if (r) {
 312                 td_verror(td, r, "blockdev_size");
 313                 goto err;
 314         }
 315
 316         if (!bytes) {
 317                 log_err("%s: zero sized block device?\n", f->file_name);
 318                 goto err;
 319         }
 320
 321         f->real_file_size = bytes;
 322         td->io_ops->close_file(td, f);
 323         return 0;
 324 err:
 325         td->io_ops->close_file(td, f);
 326         return 1;
 327 }
 328
 329 static int char_size(struct thread_data *td, struct fio_file *f)
 330 {
 331 #ifdef FIO_HAVE_CHARDEV_SIZE
 332         unsigned long long bytes = 0;
 333         int r;
 334
 335         if (td->io_ops->open_file(td, f)) {
 336                 log_err("fio: failed opening chardev %s for size check\n",
 337                         f->file_name);
 338                 return 1;
 339         }
 340
 341         r = chardev_size(f, &bytes);
 342         if (r) {
 343                 td_verror(td, r, "chardev_size");
 344                 goto err;
 345         }
 346
 347         if (!bytes) {
 348                 log_err("%s: zero sized char device?\n", f->file_name);
 349                 goto err;
 350         }
 351
 352         f->real_file_size = bytes;
 353         td->io_ops->close_file(td, f);
 354         return 0;
 355 err:
 356         td->io_ops->close_file(td, f);
 357         return 1;
 358 #else
 359         f->real_file_size = -1ULL;
 360         return 0;
 361 #endif
 362 }
 363
 364 static int get_file_size(struct thread_data *td, struct fio_file *f)
 365 {
 366         int ret = 0;
 367
 368         if (fio_file_size_known(f))
 369                 return 0;
 370
 371         if (f->filetype == FIO_TYPE_FILE)
 372                 ret = file_size(td, f);
 373         else if (f->filetype == FIO_TYPE_BLOCK)
 374                 ret = bdev_size(td, f);
 375         else if (f->filetype == FIO_TYPE_CHAR)
 376                 ret = char_size(td, f);
 377         else
 378                 f->real_file_size = -1;
 379
 380         if (ret)
 381                 return ret;
 382
 383         if (f->file_offset > f->real_file_size) {
 384                 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
 385                                         (unsigned long long) f->file_offset,
 386                                         (unsigned long long) f->real_file_size);
 387                 return 1;
 388         }
 389
 390         fio_file_set_size_known(f);
 391         return 0;
 392 }
 393
 394 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 395                                    unsigned long long off,
 396                                    unsigned long long len)
 397 {
 398         int errval = 0, ret = 0;
 399
 400 #ifdef CONFIG_ESX
 401         return 0;
 402 #endif
 403
 404         if (len == -1ULL)
 405                 len = f->io_size;
 406         if (off == -1ULL)
 407                 off = f->file_offset;
 408
 409         if (len == -1ULL || off == -1ULL)
 410                 return 0;
 411
 412         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 413                                                                 len);
 414
 415         if (td->io_ops->invalidate) {
 416                 ret = td->io_ops->invalidate(td, f);
 417                 if (ret < 0)
 418                         errval = ret;
 419         } else if (f->filetype == FIO_TYPE_FILE) {
 420                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 421                 if (ret)
 422                         errval = ret;
 423         } else if (f->filetype == FIO_TYPE_BLOCK) {
 424                 int retry_count = 0;
 425
 426                 ret = blockdev_invalidate_cache(f);
 427                 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
 428                         /*
 429                          * Linux multipath devices reject ioctl while
 430                          * the maps are being updated. That window can
 431                          * last tens of milliseconds; we'll try up to
 432                          * a quarter of a second.
 433                          */
 434                         usleep(10000);
 435                         ret = blockdev_invalidate_cache(f);
 436                 }
 437                 if (ret < 0 && errno == EACCES && geteuid()) {
 438                         if (!root_warn) {
 439                                 log_err("fio: only root may flush block "
 440                                         "devices. Cache flush bypassed!\n");
 441                                 root_warn = 1;
 442                         }
 443                         ret = 0;
 444                 }
 445                 if (ret < 0)
 446                         errval = errno;
 447         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 448                 ret = 0;
 449
 450         /*
 451          * Cache flushing isn't a fatal condition, and we know it will
 452          * happen on some platforms where we don't have the proper
 453          * function to flush eg block device caches. So just warn and
 454          * continue on our way.
 455          */
 456         if (errval)
 457                 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
 458
 459         return 0;
 460
 461 }
 462
 463 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 464 {
 465         if (!fio_file_open(f))
 466                 return 0;
 467
 468         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 469 }
 470
 471 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 472 {
 473         int ret = 0;
 474
 475         dprint(FD_FILE, "fd close %s\n", f->file_name);
 476
 477         remove_file_hash(f);
 478
 479         if (close(f->fd) < 0)
 480                 ret = errno;
 481
 482         f->fd = -1;
 483
 484         if (f->shadow_fd != -1) {
 485                 close(f->shadow_fd);
 486                 f->shadow_fd = -1;
 487         }
 488
 489         f->engine_data = 0;
 490         return ret;
 491 }
 492
 493 int file_lookup_open(struct fio_file *f, int flags)
 494 {
 495         struct fio_file *__f;
 496         int from_hash;
 497
 498         __f = lookup_file_hash(f->file_name);
 499         if (__f) {
 500                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 501                 f->lock = __f->lock;
 502                 from_hash = 1;
 503         } else {
 504                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 505                 from_hash = 0;
 506         }
 507
 508 #ifdef WIN32
 509         flags |= _O_BINARY;
 510 #endif
 511
 512         f->fd = open(f->file_name, flags, 0600);
 513         return from_hash;
 514 }
 515
 516 static int file_close_shadow_fds(struct thread_data *td)
 517 {
 518         struct fio_file *f;
 519         int num_closed = 0;
 520         unsigned int i;
 521
 522         for_each_file(td, f, i) {
 523                 if (f->shadow_fd == -1)
 524                         continue;
 525
 526                 close(f->shadow_fd);
 527                 f->shadow_fd = -1;
 528                 num_closed++;
 529         }
 530
 531         return num_closed;
 532 }
 533
 534 int generic_open_file(struct thread_data *td, struct fio_file *f)
 535 {
 536         int is_std = 0;
 537         int flags = 0;
 538         int from_hash = 0;
 539
 540         dprint(FD_FILE, "fd open %s\n", f->file_name);
 541
 542         if (!strcmp(f->file_name, "-")) {
 543                 if (td_rw(td)) {
 544                         log_err("fio: can't read/write to stdin/out\n");
 545                         return 1;
 546                 }
 547                 is_std = 1;
 548
 549                 /*
 550                  * move output logging to stderr, if we are writing to stdout
 551                  */
 552                 if (td_write(td))
 553                         f_out = stderr;
 554         }
 555
 556         if (td_trim(td))
 557                 goto skip_flags;
 558         if (td->o.odirect)
 559                 flags |= OS_O_DIRECT;
 560         if (td->o.oatomic) {
 561                 if (!FIO_O_ATOMIC) {
 562                         td_verror(td, EINVAL, "OS does not support atomic IO");
 563                         return 1;
 564                 }
 565                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
 566         }
 567         if (td->o.sync_io)
 568                 flags |= O_SYNC;
 569         if (td->o.create_on_open && td->o.allow_create)
 570                 flags |= O_CREAT;
 571 skip_flags:
 572         if (f->filetype != FIO_TYPE_FILE)
 573                 flags |= FIO_O_NOATIME;
 574
 575 open_again:
 576         if (td_write(td)) {
 577                 if (!read_only)
 578                         flags |= O_RDWR;
 579
 580                 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
 581                         flags |= O_CREAT;
 582
 583                 if (is_std)
 584                         f->fd = dup(STDOUT_FILENO);
 585                 else
 586                         from_hash = file_lookup_open(f, flags);
 587         } else if (td_read(td)) {
 588                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 589                         flags |= O_RDWR;
 590                 else
 591                         flags |= O_RDONLY;
 592
 593                 if (is_std)
 594                         f->fd = dup(STDIN_FILENO);
 595                 else
 596                         from_hash = file_lookup_open(f, flags);
 597         } else { //td trim
 598                 flags |= O_RDWR;
 599                 from_hash = file_lookup_open(f, flags);
 600         }
 601
 602         if (f->fd == -1) {
 603                 char buf[FIO_VERROR_SIZE];
 604                 int __e = errno;
 605
 606                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 607                         flags &= ~FIO_O_NOATIME;
 608                         goto open_again;
 609                 }
 610                 if (__e == EMFILE && file_close_shadow_fds(td))
 611                         goto open_again;
 612
 613                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
 614
 615                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
 616                         log_err("fio: looks like your file system does not " \
 617                                 "support direct=1/buffered=0\n");
 618                 }
 619
 620                 td_verror(td, __e, buf);
 621                 return 1;
 622         }
 623
 624         if (!from_hash && f->fd != -1) {
 625                 if (add_file_hash(f)) {
 626                         int fio_unused ret;
 627
 628                         /*
 629                          * Stash away descriptor for later close. This is to
 630                          * work-around a "feature" on Linux, where a close of
 631                          * an fd that has been opened for write will trigger
 632                          * udev to call blkid to check partitions, fs id, etc.
 633                          * That pollutes the device cache, which can slow down
 634                          * unbuffered accesses.
 635                          */
 636                         if (f->shadow_fd == -1)
 637                                 f->shadow_fd = f->fd;
 638                         else {
 639                                 /*
 640                                  * OK to ignore, we haven't done anything
 641                                  * with it
 642                                  */
 643                                 ret = generic_close_file(td, f);
 644                         }
 645                         goto open_again;
 646                 }
 647         }
 648
 649         return 0;
 650 }
 651
 652 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 653 {
 654         return get_file_size(td, f);
 655 }
 656
 657 /*
 658  * open/close all files, so that ->real_file_size gets set
 659  */
 660 static int get_file_sizes(struct thread_data *td)
 661 {
 662         struct fio_file *f;
 663         unsigned int i;
 664         int err = 0;
 665
 666         for_each_file(td, f, i) {
 667                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 668                                                                 f->file_name);
 669
 670                 if (td_io_get_file_size(td, f)) {
 671                         if (td->error != ENOENT) {
 672                                 log_err("%s\n", td->verror);
 673                                 err = 1;
 674                                 break;
 675                         }
 676                         clear_error(td);
 677                 }
 678
 679                 if (f->real_file_size == -1ULL && td->o.size)
 680                         f->real_file_size = td->o.size / td->o.nr_files;
 681         }
 682
 683         return err;
 684 }
 685
 686 struct fio_mount {
 687         struct flist_head list;
 688         const char *base;
 689         char __base[256];
 690         unsigned int key;
 691 };
 692
 693 /*
 694  * Get free number of bytes for each file on each unique mount.
 695  */
 696 static unsigned long long get_fs_free_counts(struct thread_data *td)
 697 {
 698         struct flist_head *n, *tmp;
 699         unsigned long long ret = 0;
 700         struct fio_mount *fm;
 701         FLIST_HEAD(list);
 702         struct fio_file *f;
 703         unsigned int i;
 704
 705         for_each_file(td, f, i) {
 706                 struct stat sb;
 707                 char buf[256];
 708
 709                 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
 710                         if (f->real_file_size != -1ULL)
 711                                 ret += f->real_file_size;
 712                         continue;
 713                 } else if (f->filetype != FIO_TYPE_FILE)
 714                         continue;
 715
 716                 buf[255] = '\0';
 717                 strncpy(buf, f->file_name, 255);
 718
 719                 if (stat(buf, &sb) < 0) {
 720                         if (errno != ENOENT)
 721                                 break;
 722                         strcpy(buf, ".");
 723                         if (stat(buf, &sb) < 0)
 724                                 break;
 725                 }
 726
 727                 fm = NULL;
 728                 flist_for_each(n, &list) {
 729                         fm = flist_entry(n, struct fio_mount, list);
 730                         if (fm->key == sb.st_dev)
 731                                 break;
 732
 733                         fm = NULL;
 734                 }
 735
 736                 if (fm)
 737                         continue;
 738
 739                 fm = calloc(1, sizeof(*fm));
 740                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
 741                 fm->base = basename(fm->__base);
 742                 fm->key = sb.st_dev;
 743                 flist_add(&fm->list, &list);
 744         }
 745
 746         flist_for_each_safe(n, tmp, &list) {
 747                 unsigned long long sz;
 748
 749                 fm = flist_entry(n, struct fio_mount, list);
 750                 flist_del(&fm->list);
 751
 752                 sz = get_fs_free_size(fm->base);
 753                 if (sz && sz != -1ULL)
 754                         ret += sz;
 755
 756                 free(fm);
 757         }
 758
 759         return ret;
 760 }
 761
 762 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 763 {
 764         struct thread_options *o = &td->o;
 765
 766         if (o->file_append && f->filetype == FIO_TYPE_FILE)
 767                 return f->real_file_size;
 768
 769         return td->o.start_offset +
 770                 td->subjob_number * td->o.offset_increment;
 771 }
 772
 773 /*
 774  * Open the files and setup files sizes, creating files if necessary.
 775  */
 776 int setup_files(struct thread_data *td)
 777 {
 778         unsigned long long total_size, extend_size;
 779         struct thread_options *o = &td->o;
 780         struct fio_file *f;
 781         unsigned int i, nr_fs_extra = 0;
 782         int err = 0, need_extend;
 783         int old_state;
 784         const unsigned int bs = td_min_bs(td);
 785         uint64_t fs = 0;
 786
 787         dprint(FD_FILE, "setup files\n");
 788
 789         old_state = td_bump_runstate(td, TD_SETTING_UP);
 790
 791         if (o->read_iolog_file)
 792                 goto done;
 793
 794         /*
 795          * if ioengine defines a setup() method, it's responsible for
 796          * opening the files and setting f->real_file_size to indicate
 797          * the valid range for that file.
 798          */
 799         if (td->io_ops->setup)
 800                 err = td->io_ops->setup(td);
 801         else
 802                 err = get_file_sizes(td);
 803
 804         if (err)
 805                 goto err_out;
 806
 807         /*
 808          * check sizes. if the files/devices do not exist and the size
 809          * isn't passed to fio, abort.
 810          */
 811         total_size = 0;
 812         for_each_file(td, f, i) {
 813                 f->fileno = i;
 814                 if (f->real_file_size == -1ULL)
 815                         total_size = -1ULL;
 816                 else
 817                         total_size += f->real_file_size;
 818         }
 819
 820         if (o->fill_device)
 821                 td->fill_device_size = get_fs_free_counts(td);
 822
 823         /*
 824          * device/file sizes are zero and no size given, punt
 825          */
 826         if ((!total_size || total_size == -1ULL) && !o->size &&
 827             !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
 828             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
 829                 log_err("%s: you need to specify size=\n", o->name);
 830                 td_verror(td, EINVAL, "total_file_size");
 831                 goto err_out;
 832         }
 833
 834         /*
 835          * Calculate per-file size and potential extra size for the
 836          * first files, if needed.
 837          */
 838         if (!o->file_size_low && o->nr_files) {
 839                 uint64_t all_fs;
 840
 841                 fs = o->size / o->nr_files;
 842                 all_fs = fs * o->nr_files;
 843
 844                 if (all_fs < o->size)
 845                         nr_fs_extra = (o->size - all_fs) / bs;
 846         }
 847
 848         /*
 849          * now file sizes are known, so we can set ->io_size. if size= is
 850          * not given, ->io_size is just equal to ->real_file_size. if size
 851          * is given, ->io_size is size / nr_files.
 852          */
 853         extend_size = total_size = 0;
 854         need_extend = 0;
 855         for_each_file(td, f, i) {
 856                 f->file_offset = get_start_offset(td, f);
 857
 858                 if (!o->file_size_low) {
 859                         /*
 860                          * no file size range given, file size is equal to
 861                          * total size divided by number of files. If that is
 862                          * zero, set it to the real file size. If the size
 863                          * doesn't divide nicely with the min blocksize,
 864                          * make the first files bigger.
 865                          */
 866                         f->io_size = fs;
 867                         if (nr_fs_extra) {
 868                                 nr_fs_extra--;
 869                                 f->io_size += bs;
 870                         }
 871
 872                         if (!f->io_size)
 873                                 f->io_size = f->real_file_size - f->file_offset;
 874                 } else if (f->real_file_size < o->file_size_low ||
 875                            f->real_file_size > o->file_size_high) {
 876                         if (f->file_offset > o->file_size_low)
 877                                 goto err_offset;
 878                         /*
 879                          * file size given. if it's fixed, use that. if it's a
 880                          * range, generate a random size in-between.
 881                          */
 882                         if (o->file_size_low == o->file_size_high)
 883                                 f->io_size = o->file_size_low - f->file_offset;
 884                         else {
 885                                 f->io_size = get_rand_file_size(td)
 886                                                 - f->file_offset;
 887                         }
 888                 } else
 889                         f->io_size = f->real_file_size - f->file_offset;
 890
 891                 if (f->io_size == -1ULL)
 892                         total_size = -1ULL;
 893                 else {
 894                         if (o->size_percent) {
 895                                 f->io_size = (f->io_size * o->size_percent) / 100;
 896                                 f->io_size -= (f->io_size % td_min_bs(td));
 897                         }
 898                         total_size += f->io_size;
 899                 }
 900
 901                 if (f->filetype == FIO_TYPE_FILE &&
 902                     (f->io_size + f->file_offset) > f->real_file_size &&
 903                     !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
 904                         if (!o->create_on_open) {
 905                                 need_extend++;
 906                                 extend_size += (f->io_size + f->file_offset);
 907                         } else
 908                                 f->real_file_size = f->io_size + f->file_offset;
 909                         fio_file_set_extend(f);
 910                 }
 911         }
 912
 913         if (td->o.block_error_hist) {
 914                 int len;
 915
 916                 assert(td->o.nr_files == 1);    /* checked in fixup_options */
 917                 f = td->files[0];
 918                 len = f->io_size / td->o.bs[DDIR_TRIM];
 919                 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
 920                         log_err("fio: cannot calculate block histogram with "
 921                                 "%d trim blocks, maximum %d\n",
 922                                 len, MAX_NR_BLOCK_INFOS);
 923                         td_verror(td, EINVAL, "block_error_hist");
 924                         goto err_out;
 925                 }
 926
 927                 td->ts.nr_block_infos = len;
 928                 for (i = 0; i < len; i++)
 929                         td->ts.block_infos[i] =
 930                                 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
 931         } else
 932                 td->ts.nr_block_infos = 0;
 933
 934         if (!o->size || (total_size && o->size > total_size))
 935                 o->size = total_size;
 936
 937         if (o->size < td_min_bs(td)) {
 938                 log_err("fio: blocksize too large for data set\n");
 939                 goto err_out;
 940         }
 941
 942         /*
 943          * See if we need to extend some files
 944          */
 945         if (need_extend) {
 946                 temp_stall_ts = 1;
 947                 if (output_format & FIO_OUTPUT_NORMAL)
 948                         log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
 949                                  o->name, need_extend, extend_size >> 20);
 950
 951                 for_each_file(td, f, i) {
 952                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 953
 954                         if (!fio_file_extend(f))
 955                                 continue;
 956
 957                         assert(f->filetype == FIO_TYPE_FILE);
 958                         fio_file_clear_extend(f);
 959                         if (!o->fill_device) {
 960                                 old_len = f->real_file_size;
 961                                 extend_len = f->io_size + f->file_offset -
 962                                                 old_len;
 963                         }
 964                         f->real_file_size = (f->io_size + f->file_offset);
 965                         err = extend_file(td, f);
 966                         if (err)
 967                                 break;
 968
 969                         err = __file_invalidate_cache(td, f, old_len,
 970                                                                 extend_len);
 971
 972                         /*
 973                          * Shut up static checker
 974                          */
 975                         if (f->fd != -1)
 976                                 close(f->fd);
 977
 978                         f->fd = -1;
 979                         if (err)
 980                                 break;
 981                 }
 982                 temp_stall_ts = 0;
 983         }
 984
 985         if (err)
 986                 goto err_out;
 987
 988         if (!o->zone_size)
 989                 o->zone_size = o->size;
 990
 991         /*
 992          * iolog already set the total io size, if we read back
 993          * stored entries.
 994          */
 995         if (!o->read_iolog_file) {
 996                 if (o->io_size)
 997                         td->total_io_size = o->io_size * o->loops;
 998                 else
 999                         td->total_io_size = o->size * o->loops;
1000         }
1001
1002 done:
1003         if (o->create_only)
1004                 td->done = 1;
1005
1006         td_restore_runstate(td, old_state);
1007         return 0;
1008 err_offset:
1009         log_err("%s: you need to specify valid offset=\n", o->name);
1010 err_out:
1011         td_restore_runstate(td, old_state);
1012         return 1;
1013 }
1014
1015 int pre_read_files(struct thread_data *td)
1016 {
1017         struct fio_file *f;
1018         unsigned int i;
1019
1020         dprint(FD_FILE, "pre_read files\n");
1021
1022         for_each_file(td, f, i) {
1023                 pre_read_file(td, f);
1024         }
1025
1026         return 1;
1027 }
1028
1029 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1030 {
1031         unsigned int range_size, seed;
1032         unsigned long nranges;
1033         uint64_t fsize;
1034
1035         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1036         fsize = min(f->real_file_size, f->io_size);
1037
1038         nranges = (fsize + range_size - 1) / range_size;
1039
1040         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1041         if (!td->o.rand_repeatable)
1042                 seed = td->rand_seeds[4];
1043
1044         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1045                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1046         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1047                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1048         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1049                 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1050
1051         return 1;
1052 }
1053
1054 static int init_rand_distribution(struct thread_data *td)
1055 {
1056         struct fio_file *f;
1057         unsigned int i;
1058         int state;
1059
1060         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1061                 return 0;
1062
1063         state = td_bump_runstate(td, TD_SETTING_UP);
1064
1065         for_each_file(td, f, i)
1066                 __init_rand_distribution(td, f);
1067
1068         td_restore_runstate(td, state);
1069
1070         return 1;
1071 }
1072
1073 /*
1074  * Check if the number of blocks exceeds the randomness capability of
1075  * the selected generator. Tausworthe is 32-bit, the others are fullly
1076  * 64-bit capable.
1077  */
1078 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1079                                  uint64_t blocks)
1080 {
1081         if (blocks <= FRAND32_MAX)
1082                 return 0;
1083         if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1084                 return 0;
1085
1086         /*
1087          * If the user hasn't specified a random generator, switch
1088          * to tausworthe64 with informational warning. If the user did
1089          * specify one, just warn.
1090          */
1091         log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1092                         f->file_name);
1093
1094         if (!fio_option_is_set(&td->o, random_generator)) {
1095                 log_info("fio: Switching to tausworthe64. Use the "
1096                          "random_generator= option to get rid of this "
1097                          "warning.\n");
1098                 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1099                 return 0;
1100         }
1101
1102         /*
1103          * Just make this information to avoid breaking scripts.
1104          */
1105         log_info("fio: Use the random_generator= option to switch to lfsr or "
1106                          "tausworthe64.\n");
1107         return 0;
1108 }
1109
1110 int init_random_map(struct thread_data *td)
1111 {
1112         unsigned long long blocks;
1113         struct fio_file *f;
1114         unsigned int i;
1115
1116         if (init_rand_distribution(td))
1117                 return 0;
1118         if (!td_random(td))
1119                 return 0;
1120
1121         for_each_file(td, f, i) {
1122                 uint64_t fsize = min(f->real_file_size, f->io_size);
1123
1124                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1125
1126                 if (check_rand_gen_limits(td, f, blocks))
1127                         return 1;
1128
1129                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1130                         unsigned long seed;
1131
1132                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1133
1134                         if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1135                                 fio_file_set_lfsr(f);
1136                                 continue;
1137                         }
1138                 } else if (!td->o.norandommap) {
1139                         f->io_axmap = axmap_new(blocks);
1140                         if (f->io_axmap) {
1141                                 fio_file_set_axmap(f);
1142                                 continue;
1143                         }
1144                 } else if (td->o.norandommap)
1145                         continue;
1146
1147                 if (!td->o.softrandommap) {
1148                         log_err("fio: failed allocating random map. If running"
1149                                 " a large number of jobs, try the 'norandommap'"
1150                                 " option or set 'softrandommap'. Or give"
1151                                 " a larger --alloc-size to fio.\n");
1152                         return 1;
1153                 }
1154
1155                 log_info("fio: file %s failed allocating random map. Running "
1156                          "job without.\n", f->file_name);
1157         }
1158
1159         return 0;
1160 }
1161
1162 void close_files(struct thread_data *td)
1163 {
1164         struct fio_file *f;
1165         unsigned int i;
1166
1167         for_each_file(td, f, i) {
1168                 if (fio_file_open(f))
1169                         td_io_close_file(td, f);
1170         }
1171 }
1172
1173 void close_and_free_files(struct thread_data *td)
1174 {
1175         struct fio_file *f;
1176         unsigned int i;
1177
1178         dprint(FD_FILE, "close files\n");
1179
1180         for_each_file(td, f, i) {
1181                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1182                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1183                         td_io_unlink_file(td, f);
1184                 }
1185
1186                 if (fio_file_open(f))
1187                         td_io_close_file(td, f);
1188
1189                 remove_file_hash(f);
1190
1191                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1192                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1193                         td_io_unlink_file(td, f);
1194                 }
1195
1196                 sfree(f->file_name);
1197                 f->file_name = NULL;
1198                 if (fio_file_axmap(f)) {
1199                         axmap_free(f->io_axmap);
1200                         f->io_axmap = NULL;
1201                 }
1202                 sfree(f);
1203         }
1204
1205         td->o.filename = NULL;
1206         free(td->files);
1207         free(td->file_locks);
1208         td->files_index = 0;
1209         td->files = NULL;
1210         td->file_locks = NULL;
1211         td->o.file_lock_mode = FILE_LOCK_NONE;
1212         td->o.nr_files = 0;
1213 }
1214
1215 static void get_file_type(struct fio_file *f)
1216 {
1217         struct stat sb;
1218
1219         if (!strcmp(f->file_name, "-"))
1220                 f->filetype = FIO_TYPE_PIPE;
1221         else
1222                 f->filetype = FIO_TYPE_FILE;
1223
1224 #ifdef WIN32
1225         /* \\.\ is the device namespace in Windows, where every file is
1226          * a block device */
1227         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1228                 f->filetype = FIO_TYPE_BLOCK;
1229 #endif
1230
1231         if (!stat(f->file_name, &sb)) {
1232                 if (S_ISBLK(sb.st_mode))
1233                         f->filetype = FIO_TYPE_BLOCK;
1234                 else if (S_ISCHR(sb.st_mode))
1235                         f->filetype = FIO_TYPE_CHAR;
1236                 else if (S_ISFIFO(sb.st_mode))
1237                         f->filetype = FIO_TYPE_PIPE;
1238         }
1239 }
1240
1241 static bool __is_already_allocated(const char *fname, bool set)
1242 {
1243         struct flist_head *entry;
1244         bool ret;
1245
1246         ret = file_bloom_exists(fname, set);
1247         if (!ret)
1248                 return ret;
1249
1250         flist_for_each(entry, &filename_list) {
1251                 struct file_name *fn;
1252
1253                 fn = flist_entry(entry, struct file_name, list);
1254
1255                 if (!strcmp(fn->filename, fname))
1256                         return true;
1257         }
1258
1259         return false;
1260 }
1261
1262 static bool is_already_allocated(const char *fname)
1263 {
1264         bool ret;
1265
1266         fio_file_hash_lock();
1267         ret = __is_already_allocated(fname, false);
1268         fio_file_hash_unlock();
1269
1270         return ret;
1271 }
1272
1273 static void set_already_allocated(const char *fname)
1274 {
1275         struct file_name *fn;
1276
1277         fn = malloc(sizeof(struct file_name));
1278         fn->filename = strdup(fname);
1279
1280         fio_file_hash_lock();
1281         if (!__is_already_allocated(fname, true)) {
1282                 flist_add_tail(&fn->list, &filename_list);
1283                 fn = NULL;
1284         }
1285         fio_file_hash_unlock();
1286
1287         if (fn) {
1288                 free(fn->filename);
1289                 free(fn);
1290         }
1291 }
1292
1293 static void free_already_allocated(void)
1294 {
1295         struct flist_head *entry, *tmp;
1296         struct file_name *fn;
1297
1298         if (flist_empty(&filename_list))
1299                 return;
1300
1301         fio_file_hash_lock();
1302         flist_for_each_safe(entry, tmp, &filename_list) {
1303                 fn = flist_entry(entry, struct file_name, list);
1304                 free(fn->filename);
1305                 flist_del(&fn->list);
1306                 free(fn);
1307         }
1308
1309         fio_file_hash_unlock();
1310 }
1311
1312 static struct fio_file *alloc_new_file(struct thread_data *td)
1313 {
1314         struct fio_file *f;
1315
1316         f = smalloc(sizeof(*f));
1317         if (!f) {
1318                 assert(0);
1319                 return NULL;
1320         }
1321
1322         f->fd = -1;
1323         f->shadow_fd = -1;
1324         fio_file_reset(td, f);
1325         return f;
1326 }
1327
1328 bool exists_and_not_regfile(const char *filename)
1329 {
1330         struct stat sb;
1331
1332         if (lstat(filename, &sb) == -1)
1333                 return false;
1334
1335 #ifndef WIN32 /* NOT Windows */
1336         if (S_ISREG(sb.st_mode))
1337                 return false;
1338 #else
1339         /* \\.\ is the device namespace in Windows, where every file
1340          * is a device node */
1341         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1342                 return false;
1343 #endif
1344
1345         return true;
1346 }
1347
1348 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1349 {
1350         int cur_files = td->files_index;
1351         char file_name[PATH_MAX];
1352         struct fio_file *f;
1353         int len = 0;
1354
1355         dprint(FD_FILE, "add file %s\n", fname);
1356
1357         if (td->o.directory)
1358                 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1359                                         td->o.unique_filename);
1360
1361         sprintf(file_name + len, "%s", fname);
1362
1363         /* clean cloned siblings using existing files */
1364         if (numjob && is_already_allocated(file_name) &&
1365             !exists_and_not_regfile(fname))
1366                 return 0;
1367
1368         f = alloc_new_file(td);
1369
1370         if (td->files_size <= td->files_index) {
1371                 unsigned int new_size = td->o.nr_files + 1;
1372
1373                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1374
1375                 td->files = realloc(td->files, new_size * sizeof(f));
1376                 if (td->files == NULL) {
1377                         log_err("fio: realloc OOM\n");
1378                         assert(0);
1379                 }
1380                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1381                         td->file_locks = realloc(td->file_locks, new_size);
1382                         if (!td->file_locks) {
1383                                 log_err("fio: realloc OOM\n");
1384                                 assert(0);
1385                         }
1386                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1387                 }
1388                 td->files_size = new_size;
1389         }
1390         td->files[cur_files] = f;
1391         f->fileno = cur_files;
1392
1393         /*
1394          * init function, io engine may not be loaded yet
1395          */
1396         if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1397                 f->real_file_size = -1ULL;
1398
1399         f->file_name = smalloc_strdup(file_name);
1400         if (!f->file_name)
1401                 assert(0);
1402
1403         get_file_type(f);
1404
1405         switch (td->o.file_lock_mode) {
1406         case FILE_LOCK_NONE:
1407                 break;
1408         case FILE_LOCK_READWRITE:
1409                 f->rwlock = fio_rwlock_init();
1410                 break;
1411         case FILE_LOCK_EXCLUSIVE:
1412                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1413                 break;
1414         default:
1415                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1416                 assert(0);
1417         }
1418
1419         td->files_index++;
1420         if (f->filetype == FIO_TYPE_FILE)
1421                 td->nr_normal_files++;
1422
1423         set_already_allocated(file_name);
1424
1425         if (inc)
1426                 td->o.nr_files++;
1427
1428         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1429                                                         cur_files);
1430
1431         return cur_files;
1432 }
1433
1434 int add_file_exclusive(struct thread_data *td, const char *fname)
1435 {
1436         struct fio_file *f;
1437         unsigned int i;
1438
1439         for_each_file(td, f, i) {
1440                 if (!strcmp(f->file_name, fname))
1441                         return i;
1442         }
1443
1444         return add_file(td, fname, 0, 1);
1445 }
1446
1447 void get_file(struct fio_file *f)
1448 {
1449         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1450         assert(fio_file_open(f));
1451         f->references++;
1452 }
1453
1454 int put_file(struct thread_data *td, struct fio_file *f)
1455 {
1456         int f_ret = 0, ret = 0;
1457
1458         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1459
1460         if (!fio_file_open(f)) {
1461                 assert(f->fd == -1);
1462                 return 0;
1463         }
1464
1465         assert(f->references);
1466         if (--f->references)
1467                 return 0;
1468
1469         if (should_fsync(td) && td->o.fsync_on_close) {
1470                 f_ret = fsync(f->fd);
1471                 if (f_ret < 0)
1472                         f_ret = errno;
1473         }
1474
1475         if (td->io_ops->close_file)
1476                 ret = td->io_ops->close_file(td, f);
1477
1478         if (!ret)
1479                 ret = f_ret;
1480
1481         td->nr_open_files--;
1482         fio_file_clear_open(f);
1483         assert(f->fd == -1);
1484         return ret;
1485 }
1486
1487 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1488 {
1489         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1490                 return;
1491
1492         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1493                 if (ddir == DDIR_READ)
1494                         fio_rwlock_read(f->rwlock);
1495                 else
1496                         fio_rwlock_write(f->rwlock);
1497         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1498                 fio_mutex_down(f->lock);
1499
1500         td->file_locks[f->fileno] = td->o.file_lock_mode;
1501 }
1502
1503 void unlock_file(struct thread_data *td, struct fio_file *f)
1504 {
1505         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1506                 return;
1507
1508         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1509                 fio_rwlock_unlock(f->rwlock);
1510         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1511                 fio_mutex_up(f->lock);
1512
1513         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1514 }
1515
1516 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1517 {
1518         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1519                 return;
1520         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1521                 unlock_file(td, f);
1522 }
1523
1524 static int recurse_dir(struct thread_data *td, const char *dirname)
1525 {
1526         struct dirent *dir;
1527         int ret = 0;
1528         DIR *D;
1529
1530         D = opendir(dirname);
1531         if (!D) {
1532                 char buf[FIO_VERROR_SIZE];
1533
1534                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1535                 td_verror(td, errno, buf);
1536                 return 1;
1537         }
1538
1539         while ((dir = readdir(D)) != NULL) {
1540                 char full_path[PATH_MAX];
1541                 struct stat sb;
1542
1543                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1544                         continue;
1545
1546                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1547
1548                 if (lstat(full_path, &sb) == -1) {
1549                         if (errno != ENOENT) {
1550                                 td_verror(td, errno, "stat");
1551                                 ret = 1;
1552                                 break;
1553                         }
1554                 }
1555
1556                 if (S_ISREG(sb.st_mode)) {
1557                         add_file(td, full_path, 0, 1);
1558                         continue;
1559                 }
1560                 if (!S_ISDIR(sb.st_mode))
1561                         continue;
1562
1563                 ret = recurse_dir(td, full_path);
1564                 if (ret)
1565                         break;
1566         }
1567
1568         closedir(D);
1569         return ret;
1570 }
1571
1572 int add_dir_files(struct thread_data *td, const char *path)
1573 {
1574         int ret = recurse_dir(td, path);
1575
1576         if (!ret)
1577                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1578
1579         return ret;
1580 }
1581
1582 void dup_files(struct thread_data *td, struct thread_data *org)
1583 {
1584         struct fio_file *f;
1585         unsigned int i;
1586
1587         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1588
1589         if (!org->files)
1590                 return;
1591
1592         td->files = malloc(org->files_index * sizeof(f));
1593
1594         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1595                 td->file_locks = malloc(org->files_index);
1596
1597         for_each_file(org, f, i) {
1598                 struct fio_file *__f;
1599
1600                 __f = alloc_new_file(td);
1601
1602                 if (f->file_name) {
1603                         __f->file_name = smalloc_strdup(f->file_name);
1604                         if (!__f->file_name)
1605                                 assert(0);
1606
1607                         __f->filetype = f->filetype;
1608                 }
1609
1610                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1611                         __f->lock = f->lock;
1612                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1613                         __f->rwlock = f->rwlock;
1614
1615                 td->files[i] = __f;
1616         }
1617 }
1618
1619 /*
1620  * Returns the index that matches the filename, or -1 if not there
1621  */
1622 int get_fileno(struct thread_data *td, const char *fname)
1623 {
1624         struct fio_file *f;
1625         unsigned int i;
1626
1627         for_each_file(td, f, i)
1628                 if (!strcmp(f->file_name, fname))
1629                         return i;
1630
1631         return -1;
1632 }
1633
1634 /*
1635  * For log usage, where we add/open/close files automatically
1636  */
1637 void free_release_files(struct thread_data *td)
1638 {
1639         close_files(td);
1640         td->o.nr_files = 0;
1641         td->o.open_files = 0;
1642         td->files_index = 0;
1643         td->nr_normal_files = 0;
1644 }
1645
1646 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1647 {
1648         int i;
1649
1650         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1651                 f->last_pos[i] = f->file_offset;
1652                 f->last_start[i] = -1ULL;
1653         }
1654
1655         if (fio_file_axmap(f))
1656                 axmap_reset(f->io_axmap);
1657         else if (fio_file_lfsr(f))
1658                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1659 }
1660
1661 bool fio_files_done(struct thread_data *td)
1662 {
1663         struct fio_file *f;
1664         unsigned int i;
1665
1666         for_each_file(td, f, i)
1667                 if (!fio_file_done(f))
1668                         return false;
1669
1670         return true;
1671 }
1672
1673 /* free memory used in initialization phase only */
1674 void filesetup_mem_free(void)
1675 {
1676         free_already_allocated();
1677 }