filesetup.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <string.h>
   4 #include <assert.h>
   5 #include <dirent.h>
   6 #include <libgen.h>
   7 #include <sys/stat.h>
   8 #include <sys/mman.h>
   9 #include <sys/types.h>
  10
  11 #include "fio.h"
  12 #include "smalloc.h"
  13 #include "filehash.h"
  14 #include "options.h"
  15 #include "os/os.h"
  16 #include "hash.h"
  17 #include "lib/axmap.h"
  18
  19 #ifdef CONFIG_LINUX_FALLOCATE
  20 #include <linux/falloc.h>
  21 #endif
  22
  23 static int root_warn;
  24
  25 static FLIST_HEAD(filename_list);
  26
  27 static inline void clear_error(struct thread_data *td)
  28 {
  29         td->error = 0;
  30         td->verror[0] = '\0';
  31 }
  32
  33 /*
  34  * Leaves f->fd open on success, caller must close
  35  */
  36 static int extend_file(struct thread_data *td, struct fio_file *f)
  37 {
  38         int r, new_layout = 0, unlink_file = 0, flags;
  39         unsigned long long left;
  40         unsigned int bs;
  41         char *b = NULL;
  42
  43         if (read_only) {
  44                 log_err("fio: refusing extend of file due to read-only\n");
  45                 return 0;
  46         }
  47
  48         /*
  49          * check if we need to lay the file out complete again. fio
  50          * does that for operations involving reads, or for writes
  51          * where overwrite is set
  52          */
  53         if (td_read(td) ||
  54            (td_write(td) && td->o.overwrite && !td->o.file_append) ||
  55             (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
  56                 new_layout = 1;
  57         if (td_write(td) && !td->o.overwrite && !td->o.file_append)
  58                 unlink_file = 1;
  59
  60         if (unlink_file || new_layout) {
  61                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
  62                 if ((td_io_unlink_file(td, f) < 0) && (errno != ENOENT)) {
  63                         td_verror(td, errno, "unlink");
  64                         return 1;
  65                 }
  66         }
  67
  68         flags = O_WRONLY;
  69         if (td->o.allow_create)
  70                 flags |= O_CREAT;
  71         if (new_layout)
  72                 flags |= O_TRUNC;
  73
  74 #ifdef WIN32
  75         flags |= _O_BINARY;
  76 #endif
  77
  78         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  79         f->fd = open(f->file_name, flags, 0644);
  80         if (f->fd < 0) {
  81                 int err = errno;
  82
  83                 if (err == ENOENT && !td->o.allow_create)
  84                         log_err("fio: file creation disallowed by "
  85                                         "allow_file_create=0\n");
  86                 else
  87                         td_verror(td, err, "open");
  88                 return 1;
  89         }
  90
  91 #ifdef CONFIG_POSIX_FALLOCATE
  92         if (!td->o.fill_device) {
  93                 switch (td->o.fallocate_mode) {
  94                 case FIO_FALLOCATE_NONE:
  95                         break;
  96                 case FIO_FALLOCATE_POSIX:
  97                         dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
  98                                  f->file_name,
  99                                  (unsigned long long) f->real_file_size);
 100
 101                         r = posix_fallocate(f->fd, 0, f->real_file_size);
 102                         if (r > 0) {
 103                                 log_err("fio: posix_fallocate fails: %s\n",
 104                                                 strerror(r));
 105                         }
 106                         break;
 107 #ifdef CONFIG_LINUX_FALLOCATE
 108                 case FIO_FALLOCATE_KEEP_SIZE:
 109                         dprint(FD_FILE,
 110                                 "fallocate(FALLOC_FL_KEEP_SIZE) "
 111                                 "file %s size %llu\n", f->file_name,
 112                                 (unsigned long long) f->real_file_size);
 113
 114                         r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
 115                                         f->real_file_size);
 116                         if (r != 0)
 117                                 td_verror(td, errno, "fallocate");
 118
 119                         break;
 120 #endif /* CONFIG_LINUX_FALLOCATE */
 121                 default:
 122                         log_err("fio: unknown fallocate mode: %d\n",
 123                                 td->o.fallocate_mode);
 124                         assert(0);
 125                 }
 126         }
 127 #endif /* CONFIG_POSIX_FALLOCATE */
 128
 129         if (!new_layout)
 130                 goto done;
 131
 132         /*
 133          * The size will be -1ULL when fill_device is used, so don't truncate
 134          * or fallocate this file, just write it
 135          */
 136         if (!td->o.fill_device) {
 137                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
 138                                         (unsigned long long) f->real_file_size);
 139                 if (ftruncate(f->fd, f->real_file_size) == -1) {
 140                         if (errno != EFBIG) {
 141                                 td_verror(td, errno, "ftruncate");
 142                                 goto err;
 143                         }
 144                 }
 145         }
 146
 147         b = malloc(td->o.max_bs[DDIR_WRITE]);
 148
 149         left = f->real_file_size;
 150         while (left && !td->terminate) {
 151                 bs = td->o.max_bs[DDIR_WRITE];
 152                 if (bs > left)
 153                         bs = left;
 154
 155                 fill_io_buffer(td, b, bs, bs);
 156
 157                 r = write(f->fd, b, bs);
 158
 159                 if (r > 0) {
 160                         left -= r;
 161                         continue;
 162                 } else {
 163                         if (r < 0) {
 164                                 int __e = errno;
 165
 166                                 if (__e == ENOSPC) {
 167                                         if (td->o.fill_device)
 168                                                 break;
 169                                         log_info("fio: ENOSPC on laying out "
 170                                                  "file, stopping\n");
 171                                         break;
 172                                 }
 173                                 td_verror(td, errno, "write");
 174                         } else
 175                                 td_verror(td, EIO, "write");
 176
 177                         break;
 178                 }
 179         }
 180
 181         if (td->terminate) {
 182                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 183                 td_io_unlink_file(td, f);
 184         } else if (td->o.create_fsync) {
 185                 if (fsync(f->fd) < 0) {
 186                         td_verror(td, errno, "fsync");
 187                         goto err;
 188                 }
 189         }
 190         if (td->o.fill_device && !td_write(td)) {
 191                 fio_file_clear_size_known(f);
 192                 if (td_io_get_file_size(td, f))
 193                         goto err;
 194                 if (f->io_size > f->real_file_size)
 195                         f->io_size = f->real_file_size;
 196         }
 197
 198         free(b);
 199 done:
 200         return 0;
 201 err:
 202         close(f->fd);
 203         f->fd = -1;
 204         if (b)
 205                 free(b);
 206         return 1;
 207 }
 208
 209 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 210 {
 211         int ret = 0, r, did_open = 0, old_runstate;
 212         unsigned long long left;
 213         unsigned int bs;
 214         char *b;
 215
 216         if (td->io_ops->flags & FIO_PIPEIO)
 217                 return 0;
 218
 219         if (!fio_file_open(f)) {
 220                 if (td->io_ops->open_file(td, f)) {
 221                         log_err("fio: cannot pre-read, failed to open file\n");
 222                         return 1;
 223                 }
 224                 did_open = 1;
 225         }
 226
 227         old_runstate = td_bump_runstate(td, TD_PRE_READING);
 228
 229         bs = td->o.max_bs[DDIR_READ];
 230         b = malloc(bs);
 231         memset(b, 0, bs);
 232
 233         if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
 234                 td_verror(td, errno, "lseek");
 235                 log_err("fio: failed to lseek pre-read file\n");
 236                 ret = 1;
 237                 goto error;
 238         }
 239
 240         left = f->io_size;
 241
 242         while (left && !td->terminate) {
 243                 if (bs > left)
 244                         bs = left;
 245
 246                 r = read(f->fd, b, bs);
 247
 248                 if (r == (int) bs) {
 249                         left -= bs;
 250                         continue;
 251                 } else {
 252                         td_verror(td, EIO, "pre_read");
 253                         break;
 254                 }
 255         }
 256
 257 error:
 258         td_restore_runstate(td, old_runstate);
 259
 260         if (did_open)
 261                 td->io_ops->close_file(td, f);
 262
 263         free(b);
 264         return ret;
 265 }
 266
 267 static unsigned long long get_rand_file_size(struct thread_data *td)
 268 {
 269         unsigned long long ret, sized;
 270         uint64_t frand_max;
 271         unsigned long r;
 272
 273         frand_max = rand_max(&td->file_size_state);
 274         r = __rand(&td->file_size_state);
 275         sized = td->o.file_size_high - td->o.file_size_low;
 276         ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
 277         ret += td->o.file_size_low;
 278         ret -= (ret % td->o.rw_min_bs);
 279         return ret;
 280 }
 281
 282 static int file_size(struct thread_data *td, struct fio_file *f)
 283 {
 284         struct stat st;
 285
 286         if (stat(f->file_name, &st) == -1) {
 287                 td_verror(td, errno, "fstat");
 288                 return 1;
 289         }
 290
 291         f->real_file_size = st.st_size;
 292         return 0;
 293 }
 294
 295 static int bdev_size(struct thread_data *td, struct fio_file *f)
 296 {
 297         unsigned long long bytes = 0;
 298         int r;
 299
 300         if (td->io_ops->open_file(td, f)) {
 301                 log_err("fio: failed opening blockdev %s for size check\n",
 302                         f->file_name);
 303                 return 1;
 304         }
 305
 306         r = blockdev_size(f, &bytes);
 307         if (r) {
 308                 td_verror(td, r, "blockdev_size");
 309                 goto err;
 310         }
 311
 312         if (!bytes) {
 313                 log_err("%s: zero sized block device?\n", f->file_name);
 314                 goto err;
 315         }
 316
 317         f->real_file_size = bytes;
 318         td->io_ops->close_file(td, f);
 319         return 0;
 320 err:
 321         td->io_ops->close_file(td, f);
 322         return 1;
 323 }
 324
 325 static int char_size(struct thread_data *td, struct fio_file *f)
 326 {
 327 #ifdef FIO_HAVE_CHARDEV_SIZE
 328         unsigned long long bytes = 0;
 329         int r;
 330
 331         if (td->io_ops->open_file(td, f)) {
 332                 log_err("fio: failed opening blockdev %s for size check\n",
 333                         f->file_name);
 334                 return 1;
 335         }
 336
 337         r = chardev_size(f, &bytes);
 338         if (r) {
 339                 td_verror(td, r, "chardev_size");
 340                 goto err;
 341         }
 342
 343         if (!bytes) {
 344                 log_err("%s: zero sized char device?\n", f->file_name);
 345                 goto err;
 346         }
 347
 348         f->real_file_size = bytes;
 349         td->io_ops->close_file(td, f);
 350         return 0;
 351 err:
 352         td->io_ops->close_file(td, f);
 353         return 1;
 354 #else
 355         f->real_file_size = -1ULL;
 356         return 0;
 357 #endif
 358 }
 359
 360 static int get_file_size(struct thread_data *td, struct fio_file *f)
 361 {
 362         int ret = 0;
 363
 364         if (fio_file_size_known(f))
 365                 return 0;
 366
 367         if (f->filetype == FIO_TYPE_FILE)
 368                 ret = file_size(td, f);
 369         else if (f->filetype == FIO_TYPE_BD)
 370                 ret = bdev_size(td, f);
 371         else if (f->filetype == FIO_TYPE_CHAR)
 372                 ret = char_size(td, f);
 373         else
 374                 f->real_file_size = -1;
 375
 376         if (ret)
 377                 return ret;
 378
 379         if (f->file_offset > f->real_file_size) {
 380                 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
 381                                         (unsigned long long) f->file_offset,
 382                                         (unsigned long long) f->real_file_size);
 383                 return 1;
 384         }
 385
 386         fio_file_set_size_known(f);
 387         return 0;
 388 }
 389
 390 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 391                                    unsigned long long off,
 392                                    unsigned long long len)
 393 {
 394         int ret = 0;
 395
 396 #ifdef CONFIG_ESX
 397         return 0;
 398 #endif
 399
 400         if (len == -1ULL)
 401                 len = f->io_size;
 402         if (off == -1ULL)
 403                 off = f->file_offset;
 404
 405         if (len == -1ULL || off == -1ULL)
 406                 return 0;
 407
 408         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 409                                                                 len);
 410
 411         if (td->io_ops->invalidate)
 412                 ret = td->io_ops->invalidate(td, f);
 413         else if (f->filetype == FIO_TYPE_FILE)
 414                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 415         else if (f->filetype == FIO_TYPE_BD) {
 416                 int retry_count = 0;
 417
 418                 ret = blockdev_invalidate_cache(f);
 419                 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
 420                         /*
 421                          * Linux multipath devices reject ioctl while
 422                          * the maps are being updated. That window can
 423                          * last tens of milliseconds; we'll try up to
 424                          * a quarter of a second.
 425                          */
 426                         usleep(10000);
 427                         ret = blockdev_invalidate_cache(f);
 428                 }
 429                 if (ret < 0 && errno == EACCES && geteuid()) {
 430                         if (!root_warn) {
 431                                 log_err("fio: only root may flush block "
 432                                         "devices. Cache flush bypassed!\n");
 433                                 root_warn = 1;
 434                         }
 435                         ret = 0;
 436                 }
 437         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 438                 ret = 0;
 439
 440         /*
 441          * Cache flushing isn't a fatal condition, and we know it will
 442          * happen on some platforms where we don't have the proper
 443          * function to flush eg block device caches. So just warn and
 444          * continue on our way.
 445          */
 446         if (ret) {
 447                 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
 448                 ret = 0;
 449         }
 450
 451         return 0;
 452
 453 }
 454
 455 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 456 {
 457         if (!fio_file_open(f))
 458                 return 0;
 459
 460         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 461 }
 462
 463 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 464 {
 465         int ret = 0;
 466
 467         dprint(FD_FILE, "fd close %s\n", f->file_name);
 468
 469         remove_file_hash(f);
 470
 471         if (close(f->fd) < 0)
 472                 ret = errno;
 473
 474         f->fd = -1;
 475
 476         if (f->shadow_fd != -1) {
 477                 close(f->shadow_fd);
 478                 f->shadow_fd = -1;
 479         }
 480
 481         f->engine_data = 0;
 482         return ret;
 483 }
 484
 485 int file_lookup_open(struct fio_file *f, int flags)
 486 {
 487         struct fio_file *__f;
 488         int from_hash;
 489
 490         __f = lookup_file_hash(f->file_name);
 491         if (__f) {
 492                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 493                 /*
 494                  * racy, need the __f->lock locked
 495                  */
 496                 f->lock = __f->lock;
 497                 from_hash = 1;
 498         } else {
 499                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 500                 from_hash = 0;
 501         }
 502
 503 #ifdef WIN32
 504         flags |= _O_BINARY;
 505 #endif
 506
 507         f->fd = open(f->file_name, flags, 0600);
 508         return from_hash;
 509 }
 510
 511 static int file_close_shadow_fds(struct thread_data *td)
 512 {
 513         struct fio_file *f;
 514         int num_closed = 0;
 515         unsigned int i;
 516
 517         for_each_file(td, f, i) {
 518                 if (f->shadow_fd == -1)
 519                         continue;
 520
 521                 close(f->shadow_fd);
 522                 f->shadow_fd = -1;
 523                 num_closed++;
 524         }
 525
 526         return num_closed;
 527 }
 528
 529 int generic_open_file(struct thread_data *td, struct fio_file *f)
 530 {
 531         int is_std = 0;
 532         int flags = 0;
 533         int from_hash = 0;
 534
 535         dprint(FD_FILE, "fd open %s\n", f->file_name);
 536
 537         if (!strcmp(f->file_name, "-")) {
 538                 if (td_rw(td)) {
 539                         log_err("fio: can't read/write to stdin/out\n");
 540                         return 1;
 541                 }
 542                 is_std = 1;
 543
 544                 /*
 545                  * move output logging to stderr, if we are writing to stdout
 546                  */
 547                 if (td_write(td))
 548                         f_out = stderr;
 549         }
 550
 551         if (td_trim(td))
 552                 goto skip_flags;
 553         if (td->o.odirect)
 554                 flags |= OS_O_DIRECT;
 555         if (td->o.oatomic) {
 556                 if (!FIO_O_ATOMIC) {
 557                         td_verror(td, EINVAL, "OS does not support atomic IO");
 558                         return 1;
 559                 }
 560                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
 561         }
 562         if (td->o.sync_io)
 563                 flags |= O_SYNC;
 564         if (td->o.create_on_open && td->o.allow_create)
 565                 flags |= O_CREAT;
 566 skip_flags:
 567         if (f->filetype != FIO_TYPE_FILE)
 568                 flags |= FIO_O_NOATIME;
 569
 570 open_again:
 571         if (td_write(td)) {
 572                 if (!read_only)
 573                         flags |= O_RDWR;
 574
 575                 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
 576                         flags |= O_CREAT;
 577
 578                 if (is_std)
 579                         f->fd = dup(STDOUT_FILENO);
 580                 else
 581                         from_hash = file_lookup_open(f, flags);
 582         } else if (td_read(td)) {
 583                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 584                         flags |= O_RDWR;
 585                 else
 586                         flags |= O_RDONLY;
 587
 588                 if (is_std)
 589                         f->fd = dup(STDIN_FILENO);
 590                 else
 591                         from_hash = file_lookup_open(f, flags);
 592         } else { //td trim
 593                 flags |= O_RDWR;
 594                 from_hash = file_lookup_open(f, flags);
 595         }
 596
 597         if (f->fd == -1) {
 598                 char buf[FIO_VERROR_SIZE];
 599                 int __e = errno;
 600
 601                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 602                         flags &= ~FIO_O_NOATIME;
 603                         goto open_again;
 604                 }
 605                 if (__e == EMFILE && file_close_shadow_fds(td))
 606                         goto open_again;
 607
 608                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
 609
 610                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
 611                         log_err("fio: looks like your file system does not " \
 612                                 "support direct=1/buffered=0\n");
 613                 }
 614
 615                 td_verror(td, __e, buf);
 616                 return 1;
 617         }
 618
 619         if (!from_hash && f->fd != -1) {
 620                 if (add_file_hash(f)) {
 621                         int fio_unused ret;
 622
 623                         /*
 624                          * Stash away descriptor for later close. This is to
 625                          * work-around a "feature" on Linux, where a close of
 626                          * an fd that has been opened for write will trigger
 627                          * udev to call blkid to check partitions, fs id, etc.
 628                          * That pollutes the device cache, which can slow down
 629                          * unbuffered accesses.
 630                          */
 631                         if (f->shadow_fd == -1)
 632                                 f->shadow_fd = f->fd;
 633                         else {
 634                                 /*
 635                                  * OK to ignore, we haven't done anything
 636                                  * with it
 637                                  */
 638                                 ret = generic_close_file(td, f);
 639                         }
 640                         goto open_again;
 641                 }
 642         }
 643
 644         return 0;
 645 }
 646
 647 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 648 {
 649         return get_file_size(td, f);
 650 }
 651
 652 /*
 653  * open/close all files, so that ->real_file_size gets set
 654  */
 655 static int get_file_sizes(struct thread_data *td)
 656 {
 657         struct fio_file *f;
 658         unsigned int i;
 659         int err = 0;
 660
 661         for_each_file(td, f, i) {
 662                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 663                                                                 f->file_name);
 664
 665                 if (td_io_get_file_size(td, f)) {
 666                         if (td->error != ENOENT) {
 667                                 log_err("%s\n", td->verror);
 668                                 err = 1;
 669                                 break;
 670                         }
 671                         clear_error(td);
 672                 }
 673
 674                 if (f->real_file_size == -1ULL && td->o.size)
 675                         f->real_file_size = td->o.size / td->o.nr_files;
 676         }
 677
 678         return err;
 679 }
 680
 681 struct fio_mount {
 682         struct flist_head list;
 683         const char *base;
 684         char __base[256];
 685         unsigned int key;
 686 };
 687
 688 /*
 689  * Get free number of bytes for each file on each unique mount.
 690  */
 691 static unsigned long long get_fs_free_counts(struct thread_data *td)
 692 {
 693         struct flist_head *n, *tmp;
 694         unsigned long long ret = 0;
 695         struct fio_mount *fm;
 696         FLIST_HEAD(list);
 697         struct fio_file *f;
 698         unsigned int i;
 699
 700         for_each_file(td, f, i) {
 701                 struct stat sb;
 702                 char buf[256];
 703
 704                 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
 705                         if (f->real_file_size != -1ULL)
 706                                 ret += f->real_file_size;
 707                         continue;
 708                 } else if (f->filetype != FIO_TYPE_FILE)
 709                         continue;
 710
 711                 buf[255] = '\0';
 712                 strncpy(buf, f->file_name, 255);
 713
 714                 if (stat(buf, &sb) < 0) {
 715                         if (errno != ENOENT)
 716                                 break;
 717                         strcpy(buf, ".");
 718                         if (stat(buf, &sb) < 0)
 719                                 break;
 720                 }
 721
 722                 fm = NULL;
 723                 flist_for_each(n, &list) {
 724                         fm = flist_entry(n, struct fio_mount, list);
 725                         if (fm->key == sb.st_dev)
 726                                 break;
 727
 728                         fm = NULL;
 729                 }
 730
 731                 if (fm)
 732                         continue;
 733
 734                 fm = calloc(1, sizeof(*fm));
 735                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
 736                 fm->base = basename(fm->__base);
 737                 fm->key = sb.st_dev;
 738                 flist_add(&fm->list, &list);
 739         }
 740
 741         flist_for_each_safe(n, tmp, &list) {
 742                 unsigned long long sz;
 743
 744                 fm = flist_entry(n, struct fio_mount, list);
 745                 flist_del(&fm->list);
 746
 747                 sz = get_fs_free_size(fm->base);
 748                 if (sz && sz != -1ULL)
 749                         ret += sz;
 750
 751                 free(fm);
 752         }
 753
 754         return ret;
 755 }
 756
 757 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 758 {
 759         struct thread_options *o = &td->o;
 760
 761         if (o->file_append && f->filetype == FIO_TYPE_FILE)
 762                 return f->real_file_size;
 763
 764         return td->o.start_offset +
 765                 td->subjob_number * td->o.offset_increment;
 766 }
 767
 768 /*
 769  * Open the files and setup files sizes, creating files if necessary.
 770  */
 771 int setup_files(struct thread_data *td)
 772 {
 773         unsigned long long total_size, extend_size;
 774         struct thread_options *o = &td->o;
 775         struct fio_file *f;
 776         unsigned int i, nr_fs_extra = 0;
 777         int err = 0, need_extend;
 778         int old_state;
 779         const unsigned int bs = td_min_bs(td);
 780         uint64_t fs = 0;
 781
 782         dprint(FD_FILE, "setup files\n");
 783
 784         old_state = td_bump_runstate(td, TD_SETTING_UP);
 785
 786         if (o->read_iolog_file)
 787                 goto done;
 788
 789         /*
 790          * if ioengine defines a setup() method, it's responsible for
 791          * opening the files and setting f->real_file_size to indicate
 792          * the valid range for that file.
 793          */
 794         if (td->io_ops->setup)
 795                 err = td->io_ops->setup(td);
 796         else
 797                 err = get_file_sizes(td);
 798
 799         if (err)
 800                 goto err_out;
 801
 802         /*
 803          * check sizes. if the files/devices do not exist and the size
 804          * isn't passed to fio, abort.
 805          */
 806         total_size = 0;
 807         for_each_file(td, f, i) {
 808                 if (f->real_file_size == -1ULL)
 809                         total_size = -1ULL;
 810                 else
 811                         total_size += f->real_file_size;
 812         }
 813
 814         if (o->fill_device)
 815                 td->fill_device_size = get_fs_free_counts(td);
 816
 817         /*
 818          * device/file sizes are zero and no size given, punt
 819          */
 820         if ((!total_size || total_size == -1ULL) && !o->size &&
 821             !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
 822             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
 823                 log_err("%s: you need to specify size=\n", o->name);
 824                 td_verror(td, EINVAL, "total_file_size");
 825                 goto err_out;
 826         }
 827
 828         /*
 829          * Calculate per-file size and potential extra size for the
 830          * first files, if needed.
 831          */
 832         if (!o->file_size_low && o->nr_files) {
 833                 uint64_t all_fs;
 834
 835                 fs = o->size / o->nr_files;
 836                 all_fs = fs * o->nr_files;
 837
 838                 if (all_fs < o->size)
 839                         nr_fs_extra = (o->size - all_fs) / bs;
 840         }
 841
 842         /*
 843          * now file sizes are known, so we can set ->io_size. if size= is
 844          * not given, ->io_size is just equal to ->real_file_size. if size
 845          * is given, ->io_size is size / nr_files.
 846          */
 847         extend_size = total_size = 0;
 848         need_extend = 0;
 849         for_each_file(td, f, i) {
 850                 f->file_offset = get_start_offset(td, f);
 851
 852                 if (!o->file_size_low) {
 853                         /*
 854                          * no file size range given, file size is equal to
 855                          * total size divided by number of files. If that is
 856                          * zero, set it to the real file size. If the size
 857                          * doesn't divide nicely with the min blocksize,
 858                          * make the first files bigger.
 859                          */
 860                         f->io_size = fs;
 861                         if (nr_fs_extra) {
 862                                 nr_fs_extra--;
 863                                 f->io_size += bs;
 864                         }
 865
 866                         if (!f->io_size)
 867                                 f->io_size = f->real_file_size - f->file_offset;
 868                 } else if (f->real_file_size < o->file_size_low ||
 869                            f->real_file_size > o->file_size_high) {
 870                         if (f->file_offset > o->file_size_low)
 871                                 goto err_offset;
 872                         /*
 873                          * file size given. if it's fixed, use that. if it's a
 874                          * range, generate a random size in-between.
 875                          */
 876                         if (o->file_size_low == o->file_size_high)
 877                                 f->io_size = o->file_size_low - f->file_offset;
 878                         else {
 879                                 f->io_size = get_rand_file_size(td)
 880                                                 - f->file_offset;
 881                         }
 882                 } else
 883                         f->io_size = f->real_file_size - f->file_offset;
 884
 885                 if (f->io_size == -1ULL)
 886                         total_size = -1ULL;
 887                 else {
 888                         if (o->size_percent)
 889                                 f->io_size = (f->io_size * o->size_percent) / 100;
 890                         total_size += f->io_size;
 891                 }
 892
 893                 if (f->filetype == FIO_TYPE_FILE &&
 894                     (f->io_size + f->file_offset) > f->real_file_size &&
 895                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 896                         if (!o->create_on_open) {
 897                                 need_extend++;
 898                                 extend_size += (f->io_size + f->file_offset);
 899                         } else
 900                                 f->real_file_size = f->io_size + f->file_offset;
 901                         fio_file_set_extend(f);
 902                 }
 903         }
 904
 905         if (td->o.block_error_hist) {
 906                 int len;
 907
 908                 assert(td->o.nr_files == 1);    /* checked in fixup_options */
 909                 f = td->files[0];
 910                 len = f->io_size / td->o.bs[DDIR_TRIM];
 911                 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
 912                         log_err("fio: cannot calculate block histogram with "
 913                                 "%d trim blocks, maximum %d\n",
 914                                 len, MAX_NR_BLOCK_INFOS);
 915                         td_verror(td, EINVAL, "block_error_hist");
 916                         goto err_out;
 917                 }
 918
 919                 td->ts.nr_block_infos = len;
 920                 for (i = 0; i < len; i++)
 921                         td->ts.block_infos[i] =
 922                                 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
 923         } else
 924                 td->ts.nr_block_infos = 0;
 925
 926         if (!o->size || (total_size && o->size > total_size))
 927                 o->size = total_size;
 928
 929         if (o->size < td_min_bs(td)) {
 930                 log_err("fio: blocksize too large for data set\n");
 931                 goto err_out;
 932         }
 933
 934         /*
 935          * See if we need to extend some files
 936          */
 937         if (need_extend) {
 938                 temp_stall_ts = 1;
 939                 if (output_format & FIO_OUTPUT_NORMAL)
 940                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 941                                  " %lluMB)\n", o->name, need_extend,
 942                                         extend_size >> 20);
 943
 944                 for_each_file(td, f, i) {
 945                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 946
 947                         if (!fio_file_extend(f))
 948                                 continue;
 949
 950                         assert(f->filetype == FIO_TYPE_FILE);
 951                         fio_file_clear_extend(f);
 952                         if (!o->fill_device) {
 953                                 old_len = f->real_file_size;
 954                                 extend_len = f->io_size + f->file_offset -
 955                                                 old_len;
 956                         }
 957                         f->real_file_size = (f->io_size + f->file_offset);
 958                         err = extend_file(td, f);
 959                         if (err)
 960                                 break;
 961
 962                         err = __file_invalidate_cache(td, f, old_len,
 963                                                                 extend_len);
 964
 965                         /*
 966                          * Shut up static checker
 967                          */
 968                         if (f->fd != -1)
 969                                 close(f->fd);
 970
 971                         f->fd = -1;
 972                         if (err)
 973                                 break;
 974                 }
 975                 temp_stall_ts = 0;
 976         }
 977
 978         if (err)
 979                 goto err_out;
 980
 981         if (!o->zone_size)
 982                 o->zone_size = o->size;
 983
 984         /*
 985          * iolog already set the total io size, if we read back
 986          * stored entries.
 987          */
 988         if (!o->read_iolog_file) {
 989                 if (o->io_limit)
 990                         td->total_io_size = o->io_limit * o->loops;
 991                 else
 992                         td->total_io_size = o->size * o->loops;
 993         }
 994
 995 done:
 996         if (o->create_only)
 997                 td->done = 1;
 998
 999         td_restore_runstate(td, old_state);
1000         return 0;
1001 err_offset:
1002         log_err("%s: you need to specify valid offset=\n", o->name);
1003 err_out:
1004         td_restore_runstate(td, old_state);
1005         return 1;
1006 }
1007
1008 int pre_read_files(struct thread_data *td)
1009 {
1010         struct fio_file *f;
1011         unsigned int i;
1012
1013         dprint(FD_FILE, "pre_read files\n");
1014
1015         for_each_file(td, f, i) {
1016                 pre_read_file(td, f);
1017         }
1018
1019         return 1;
1020 }
1021
1022 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1023 {
1024         unsigned int range_size, seed;
1025         unsigned long nranges;
1026         uint64_t fsize;
1027
1028         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1029         fsize = min(f->real_file_size, f->io_size);
1030
1031         nranges = (fsize + range_size - 1) / range_size;
1032
1033         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1034         if (!td->o.rand_repeatable)
1035                 seed = td->rand_seeds[4];
1036
1037         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1038                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1039         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1040                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1041         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1042                 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1043
1044         return 1;
1045 }
1046
1047 static int init_rand_distribution(struct thread_data *td)
1048 {
1049         struct fio_file *f;
1050         unsigned int i;
1051         int state;
1052
1053         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1054                 return 0;
1055
1056         state = td_bump_runstate(td, TD_SETTING_UP);
1057
1058         for_each_file(td, f, i)
1059                 __init_rand_distribution(td, f);
1060
1061         td_restore_runstate(td, state);
1062
1063         return 1;
1064 }
1065
1066 /*
1067  * Check if the number of blocks exceeds the randomness capability of
1068  * the selected generator. Tausworthe is 32-bit, the others are fullly
1069  * 64-bit capable.
1070  */
1071 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1072                                  uint64_t blocks)
1073 {
1074         if (blocks <= FRAND32_MAX)
1075                 return 0;
1076         if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1077                 return 0;
1078
1079         /*
1080          * If the user hasn't specified a random generator, switch
1081          * to tausworthe64 with informational warning. If the user did
1082          * specify one, just warn.
1083          */
1084         log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1085                         f->file_name);
1086
1087         if (!fio_option_is_set(&td->o, random_generator)) {
1088                 log_info("fio: Switching to tausworthe64. Use the "
1089                          "random_generator= option to get rid of this "
1090                          " warning.\n");
1091                 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1092                 return 0;
1093         }
1094
1095         /*
1096          * Just make this information to avoid breaking scripts.
1097          */
1098         log_info("fio: Use the random_generator= option to switch to lfsr or "
1099                          "tausworthe64.\n");
1100         return 0;
1101 }
1102
1103 int init_random_map(struct thread_data *td)
1104 {
1105         unsigned long long blocks;
1106         struct fio_file *f;
1107         unsigned int i;
1108
1109         if (init_rand_distribution(td))
1110                 return 0;
1111         if (!td_random(td))
1112                 return 0;
1113
1114         for_each_file(td, f, i) {
1115                 uint64_t fsize = min(f->real_file_size, f->io_size);
1116
1117                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1118
1119                 if (check_rand_gen_limits(td, f, blocks))
1120                         return 1;
1121
1122                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1123                         unsigned long seed;
1124
1125                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1126
1127                         if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1128                                 fio_file_set_lfsr(f);
1129                                 continue;
1130                         }
1131                 } else if (!td->o.norandommap) {
1132                         f->io_axmap = axmap_new(blocks);
1133                         if (f->io_axmap) {
1134                                 fio_file_set_axmap(f);
1135                                 continue;
1136                         }
1137                 } else if (td->o.norandommap)
1138                         continue;
1139
1140                 if (!td->o.softrandommap) {
1141                         log_err("fio: failed allocating random map. If running"
1142                                 " a large number of jobs, try the 'norandommap'"
1143                                 " option or set 'softrandommap'. Or give"
1144                                 " a larger --alloc-size to fio.\n");
1145                         return 1;
1146                 }
1147
1148                 log_info("fio: file %s failed allocating random map. Running "
1149                          "job without.\n", f->file_name);
1150         }
1151
1152         return 0;
1153 }
1154
1155 void close_files(struct thread_data *td)
1156 {
1157         struct fio_file *f;
1158         unsigned int i;
1159
1160         for_each_file(td, f, i) {
1161                 if (fio_file_open(f))
1162                         td_io_close_file(td, f);
1163         }
1164 }
1165
1166 void close_and_free_files(struct thread_data *td)
1167 {
1168         struct fio_file *f;
1169         unsigned int i;
1170
1171         dprint(FD_FILE, "close files\n");
1172
1173         for_each_file(td, f, i) {
1174                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1175                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1176                         td_io_unlink_file(td, f);
1177                 }
1178
1179                 if (fio_file_open(f))
1180                         td_io_close_file(td, f);
1181
1182                 remove_file_hash(f);
1183
1184                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1185                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1186                         td_io_unlink_file(td, f);
1187                 }
1188
1189                 sfree(f->file_name);
1190                 f->file_name = NULL;
1191                 if (fio_file_axmap(f)) {
1192                         axmap_free(f->io_axmap);
1193                         f->io_axmap = NULL;
1194                 }
1195                 sfree(f);
1196         }
1197
1198         td->o.filename = NULL;
1199         free(td->files);
1200         free(td->file_locks);
1201         td->files_index = 0;
1202         td->files = NULL;
1203         td->file_locks = NULL;
1204         td->o.file_lock_mode = FILE_LOCK_NONE;
1205         td->o.nr_files = 0;
1206 }
1207
1208 static void get_file_type(struct fio_file *f)
1209 {
1210         struct stat sb;
1211
1212         if (!strcmp(f->file_name, "-"))
1213                 f->filetype = FIO_TYPE_PIPE;
1214         else
1215                 f->filetype = FIO_TYPE_FILE;
1216
1217         /* \\.\ is the device namespace in Windows, where every file is
1218          * a block device */
1219         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1220                 f->filetype = FIO_TYPE_BD;
1221
1222         if (!stat(f->file_name, &sb)) {
1223                 if (S_ISBLK(sb.st_mode))
1224                         f->filetype = FIO_TYPE_BD;
1225                 else if (S_ISCHR(sb.st_mode))
1226                         f->filetype = FIO_TYPE_CHAR;
1227                 else if (S_ISFIFO(sb.st_mode))
1228                         f->filetype = FIO_TYPE_PIPE;
1229         }
1230 }
1231
1232 static int __is_already_allocated(const char *fname)
1233 {
1234         struct flist_head *entry;
1235         char *filename;
1236
1237         if (flist_empty(&filename_list))
1238                 return 0;
1239
1240         flist_for_each(entry, &filename_list) {
1241                 filename = flist_entry(entry, struct file_name, list)->filename;
1242
1243                 if (strcmp(filename, fname) == 0)
1244                         return 1;
1245         }
1246
1247         return 0;
1248 }
1249
1250 static int is_already_allocated(const char *fname)
1251 {
1252         int ret;
1253
1254         fio_file_hash_lock();
1255         ret = __is_already_allocated(fname);
1256         fio_file_hash_unlock();
1257         return ret;
1258 }
1259
1260 static void set_already_allocated(const char *fname)
1261 {
1262         struct file_name *fn;
1263
1264         fn = malloc(sizeof(struct file_name));
1265         fn->filename = strdup(fname);
1266
1267         fio_file_hash_lock();
1268         if (!__is_already_allocated(fname)) {
1269                 flist_add_tail(&fn->list, &filename_list);
1270                 fn = NULL;
1271         }
1272         fio_file_hash_unlock();
1273
1274         if (fn) {
1275                 free(fn->filename);
1276                 free(fn);
1277         }
1278 }
1279
1280
1281 static void free_already_allocated(void)
1282 {
1283         struct flist_head *entry, *tmp;
1284         struct file_name *fn;
1285
1286         if (flist_empty(&filename_list))
1287                 return;
1288
1289         fio_file_hash_lock();
1290         flist_for_each_safe(entry, tmp, &filename_list) {
1291                 fn = flist_entry(entry, struct file_name, list);
1292                 free(fn->filename);
1293                 flist_del(&fn->list);
1294                 free(fn);
1295         }
1296
1297         fio_file_hash_unlock();
1298 }
1299
1300 static struct fio_file *alloc_new_file(struct thread_data *td)
1301 {
1302         struct fio_file *f;
1303
1304         f = smalloc(sizeof(*f));
1305         if (!f) {
1306                 log_err("fio: smalloc OOM\n");
1307                 assert(0);
1308                 return NULL;
1309         }
1310
1311         f->fd = -1;
1312         f->shadow_fd = -1;
1313         fio_file_reset(td, f);
1314         return f;
1315 }
1316
1317 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1318 {
1319         int cur_files = td->files_index;
1320         char file_name[PATH_MAX];
1321         struct fio_file *f;
1322         int len = 0;
1323
1324         dprint(FD_FILE, "add file %s\n", fname);
1325
1326         if (td->o.directory)
1327                 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob);
1328
1329         sprintf(file_name + len, "%s", fname);
1330
1331         /* clean cloned siblings using existing files */
1332         if (numjob && is_already_allocated(file_name))
1333                 return 0;
1334
1335         f = alloc_new_file(td);
1336
1337         if (td->files_size <= td->files_index) {
1338                 unsigned int new_size = td->o.nr_files + 1;
1339
1340                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1341
1342                 td->files = realloc(td->files, new_size * sizeof(f));
1343                 if (td->files == NULL) {
1344                         log_err("fio: realloc OOM\n");
1345                         assert(0);
1346                 }
1347                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1348                         td->file_locks = realloc(td->file_locks, new_size);
1349                         if (!td->file_locks) {
1350                                 log_err("fio: realloc OOM\n");
1351                                 assert(0);
1352                         }
1353                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1354                 }
1355                 td->files_size = new_size;
1356         }
1357         td->files[cur_files] = f;
1358         f->fileno = cur_files;
1359
1360         /*
1361          * init function, io engine may not be loaded yet
1362          */
1363         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1364                 f->real_file_size = -1ULL;
1365
1366         f->file_name = smalloc_strdup(file_name);
1367         if (!f->file_name) {
1368                 log_err("fio: smalloc OOM\n");
1369                 assert(0);
1370         }
1371
1372         get_file_type(f);
1373
1374         switch (td->o.file_lock_mode) {
1375         case FILE_LOCK_NONE:
1376                 break;
1377         case FILE_LOCK_READWRITE:
1378                 f->rwlock = fio_rwlock_init();
1379                 break;
1380         case FILE_LOCK_EXCLUSIVE:
1381                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1382                 break;
1383         default:
1384                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1385                 assert(0);
1386         }
1387
1388         td->files_index++;
1389         if (f->filetype == FIO_TYPE_FILE)
1390                 td->nr_normal_files++;
1391
1392         set_already_allocated(file_name);
1393
1394         if (inc)
1395                 td->o.nr_files++;
1396
1397         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1398                                                         cur_files);
1399
1400         return cur_files;
1401 }
1402
1403 int add_file_exclusive(struct thread_data *td, const char *fname)
1404 {
1405         struct fio_file *f;
1406         unsigned int i;
1407
1408         for_each_file(td, f, i) {
1409                 if (!strcmp(f->file_name, fname))
1410                         return i;
1411         }
1412
1413         return add_file(td, fname, 0, 1);
1414 }
1415
1416 void get_file(struct fio_file *f)
1417 {
1418         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1419         assert(fio_file_open(f));
1420         f->references++;
1421 }
1422
1423 int put_file(struct thread_data *td, struct fio_file *f)
1424 {
1425         int f_ret = 0, ret = 0;
1426
1427         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1428
1429         if (!fio_file_open(f)) {
1430                 assert(f->fd == -1);
1431                 return 0;
1432         }
1433
1434         assert(f->references);
1435         if (--f->references)
1436                 return 0;
1437
1438         if (should_fsync(td) && td->o.fsync_on_close) {
1439                 f_ret = fsync(f->fd);
1440                 if (f_ret < 0)
1441                         f_ret = errno;
1442         }
1443
1444         if (td->io_ops->close_file)
1445                 ret = td->io_ops->close_file(td, f);
1446
1447         if (!ret)
1448                 ret = f_ret;
1449
1450         td->nr_open_files--;
1451         fio_file_clear_open(f);
1452         assert(f->fd == -1);
1453         return ret;
1454 }
1455
1456 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1457 {
1458         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1459                 return;
1460
1461         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1462                 if (ddir == DDIR_READ)
1463                         fio_rwlock_read(f->rwlock);
1464                 else
1465                         fio_rwlock_write(f->rwlock);
1466         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1467                 fio_mutex_down(f->lock);
1468
1469         td->file_locks[f->fileno] = td->o.file_lock_mode;
1470 }
1471
1472 void unlock_file(struct thread_data *td, struct fio_file *f)
1473 {
1474         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1475                 return;
1476
1477         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1478                 fio_rwlock_unlock(f->rwlock);
1479         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1480                 fio_mutex_up(f->lock);
1481
1482         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1483 }
1484
1485 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1486 {
1487         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1488                 return;
1489         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1490                 unlock_file(td, f);
1491 }
1492
1493 static int recurse_dir(struct thread_data *td, const char *dirname)
1494 {
1495         struct dirent *dir;
1496         int ret = 0;
1497         DIR *D;
1498
1499         D = opendir(dirname);
1500         if (!D) {
1501                 char buf[FIO_VERROR_SIZE];
1502
1503                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1504                 td_verror(td, errno, buf);
1505                 return 1;
1506         }
1507
1508         while ((dir = readdir(D)) != NULL) {
1509                 char full_path[PATH_MAX];
1510                 struct stat sb;
1511
1512                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1513                         continue;
1514
1515                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1516
1517                 if (lstat(full_path, &sb) == -1) {
1518                         if (errno != ENOENT) {
1519                                 td_verror(td, errno, "stat");
1520                                 ret = 1;
1521                                 break;
1522                         }
1523                 }
1524
1525                 if (S_ISREG(sb.st_mode)) {
1526                         add_file(td, full_path, 0, 1);
1527                         continue;
1528                 }
1529                 if (!S_ISDIR(sb.st_mode))
1530                         continue;
1531
1532                 ret = recurse_dir(td, full_path);
1533                 if (ret)
1534                         break;
1535         }
1536
1537         closedir(D);
1538         return ret;
1539 }
1540
1541 int add_dir_files(struct thread_data *td, const char *path)
1542 {
1543         int ret = recurse_dir(td, path);
1544
1545         if (!ret)
1546                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1547
1548         return ret;
1549 }
1550
1551 void dup_files(struct thread_data *td, struct thread_data *org)
1552 {
1553         struct fio_file *f;
1554         unsigned int i;
1555
1556         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1557
1558         if (!org->files)
1559                 return;
1560
1561         td->files = malloc(org->files_index * sizeof(f));
1562
1563         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1564                 td->file_locks = malloc(org->files_index);
1565
1566         for_each_file(org, f, i) {
1567                 struct fio_file *__f;
1568
1569                 __f = alloc_new_file(td);
1570
1571                 if (f->file_name) {
1572                         __f->file_name = smalloc_strdup(f->file_name);
1573                         if (!__f->file_name) {
1574                                 log_err("fio: smalloc OOM\n");
1575                                 assert(0);
1576                         }
1577
1578                         __f->filetype = f->filetype;
1579                 }
1580
1581                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1582                         __f->lock = f->lock;
1583                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1584                         __f->rwlock = f->rwlock;
1585
1586                 td->files[i] = __f;
1587         }
1588 }
1589
1590 /*
1591  * Returns the index that matches the filename, or -1 if not there
1592  */
1593 int get_fileno(struct thread_data *td, const char *fname)
1594 {
1595         struct fio_file *f;
1596         unsigned int i;
1597
1598         for_each_file(td, f, i)
1599                 if (!strcmp(f->file_name, fname))
1600                         return i;
1601
1602         return -1;
1603 }
1604
1605 /*
1606  * For log usage, where we add/open/close files automatically
1607  */
1608 void free_release_files(struct thread_data *td)
1609 {
1610         close_files(td);
1611         td->o.nr_files = 0;
1612         td->o.open_files = 0;
1613         td->files_index = 0;
1614         td->nr_normal_files = 0;
1615 }
1616
1617 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1618 {
1619         int i;
1620
1621         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1622                 f->last_pos[i] = f->file_offset;
1623                 f->last_start[i] = -1ULL;
1624         }
1625
1626         if (fio_file_axmap(f))
1627                 axmap_reset(f->io_axmap);
1628         else if (fio_file_lfsr(f))
1629                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1630 }
1631
1632 int fio_files_done(struct thread_data *td)
1633 {
1634         struct fio_file *f;
1635         unsigned int i;
1636
1637         for_each_file(td, f, i)
1638                 if (!fio_file_done(f))
1639                         return 0;
1640
1641         return 1;
1642 }
1643
1644 /* free memory used in initialization phase only */
1645 void filesetup_mem_free(void)
1646 {
1647         free_already_allocated();
1648 }