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_BD)
 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_BD) {
 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                 /*
 502                  * racy, need the __f->lock locked
 503                  */
 504                 f->lock = __f->lock;
 505                 from_hash = 1;
 506         } else {
 507                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 508                 from_hash = 0;
 509         }
 510
 511 #ifdef WIN32
 512         flags |= _O_BINARY;
 513 #endif
 514
 515         f->fd = open(f->file_name, flags, 0600);
 516         return from_hash;
 517 }
 518
 519 static int file_close_shadow_fds(struct thread_data *td)
 520 {
 521         struct fio_file *f;
 522         int num_closed = 0;
 523         unsigned int i;
 524
 525         for_each_file(td, f, i) {
 526                 if (f->shadow_fd == -1)
 527                         continue;
 528
 529                 close(f->shadow_fd);
 530                 f->shadow_fd = -1;
 531                 num_closed++;
 532         }
 533
 534         return num_closed;
 535 }
 536
 537 int generic_open_file(struct thread_data *td, struct fio_file *f)
 538 {
 539         int is_std = 0;
 540         int flags = 0;
 541         int from_hash = 0;
 542
 543         dprint(FD_FILE, "fd open %s\n", f->file_name);
 544
 545         if (!strcmp(f->file_name, "-")) {
 546                 if (td_rw(td)) {
 547                         log_err("fio: can't read/write to stdin/out\n");
 548                         return 1;
 549                 }
 550                 is_std = 1;
 551
 552                 /*
 553                  * move output logging to stderr, if we are writing to stdout
 554                  */
 555                 if (td_write(td))
 556                         f_out = stderr;
 557         }
 558
 559         if (td_trim(td))
 560                 goto skip_flags;
 561         if (td->o.odirect)
 562                 flags |= OS_O_DIRECT;
 563         if (td->o.oatomic) {
 564                 if (!FIO_O_ATOMIC) {
 565                         td_verror(td, EINVAL, "OS does not support atomic IO");
 566                         return 1;
 567                 }
 568                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
 569         }
 570         if (td->o.sync_io)
 571                 flags |= O_SYNC;
 572         if (td->o.create_on_open && td->o.allow_create)
 573                 flags |= O_CREAT;
 574 skip_flags:
 575         if (f->filetype != FIO_TYPE_FILE)
 576                 flags |= FIO_O_NOATIME;
 577
 578 open_again:
 579         if (td_write(td)) {
 580                 if (!read_only)
 581                         flags |= O_RDWR;
 582
 583                 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
 584                         flags |= O_CREAT;
 585
 586                 if (is_std)
 587                         f->fd = dup(STDOUT_FILENO);
 588                 else
 589                         from_hash = file_lookup_open(f, flags);
 590         } else if (td_read(td)) {
 591                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 592                         flags |= O_RDWR;
 593                 else
 594                         flags |= O_RDONLY;
 595
 596                 if (is_std)
 597                         f->fd = dup(STDIN_FILENO);
 598                 else
 599                         from_hash = file_lookup_open(f, flags);
 600         } else { //td trim
 601                 flags |= O_RDWR;
 602                 from_hash = file_lookup_open(f, flags);
 603         }
 604
 605         if (f->fd == -1) {
 606                 char buf[FIO_VERROR_SIZE];
 607                 int __e = errno;
 608
 609                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 610                         flags &= ~FIO_O_NOATIME;
 611                         goto open_again;
 612                 }
 613                 if (__e == EMFILE && file_close_shadow_fds(td))
 614                         goto open_again;
 615
 616                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
 617
 618                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
 619                         log_err("fio: looks like your file system does not " \
 620                                 "support direct=1/buffered=0\n");
 621                 }
 622
 623                 td_verror(td, __e, buf);
 624                 return 1;
 625         }
 626
 627         if (!from_hash && f->fd != -1) {
 628                 if (add_file_hash(f)) {
 629                         int fio_unused ret;
 630
 631                         /*
 632                          * Stash away descriptor for later close. This is to
 633                          * work-around a "feature" on Linux, where a close of
 634                          * an fd that has been opened for write will trigger
 635                          * udev to call blkid to check partitions, fs id, etc.
 636                          * That pollutes the device cache, which can slow down
 637                          * unbuffered accesses.
 638                          */
 639                         if (f->shadow_fd == -1)
 640                                 f->shadow_fd = f->fd;
 641                         else {
 642                                 /*
 643                                  * OK to ignore, we haven't done anything
 644                                  * with it
 645                                  */
 646                                 ret = generic_close_file(td, f);
 647                         }
 648                         goto open_again;
 649                 }
 650         }
 651
 652         return 0;
 653 }
 654
 655 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 656 {
 657         return get_file_size(td, f);
 658 }
 659
 660 /*
 661  * open/close all files, so that ->real_file_size gets set
 662  */
 663 static int get_file_sizes(struct thread_data *td)
 664 {
 665         struct fio_file *f;
 666         unsigned int i;
 667         int err = 0;
 668
 669         for_each_file(td, f, i) {
 670                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 671                                                                 f->file_name);
 672
 673                 if (td_io_get_file_size(td, f)) {
 674                         if (td->error != ENOENT) {
 675                                 log_err("%s\n", td->verror);
 676                                 err = 1;
 677                                 break;
 678                         }
 679                         clear_error(td);
 680                 }
 681
 682                 if (f->real_file_size == -1ULL && td->o.size)
 683                         f->real_file_size = td->o.size / td->o.nr_files;
 684         }
 685
 686         return err;
 687 }
 688
 689 struct fio_mount {
 690         struct flist_head list;
 691         const char *base;
 692         char __base[256];
 693         unsigned int key;
 694 };
 695
 696 /*
 697  * Get free number of bytes for each file on each unique mount.
 698  */
 699 static unsigned long long get_fs_free_counts(struct thread_data *td)
 700 {
 701         struct flist_head *n, *tmp;
 702         unsigned long long ret = 0;
 703         struct fio_mount *fm;
 704         FLIST_HEAD(list);
 705         struct fio_file *f;
 706         unsigned int i;
 707
 708         for_each_file(td, f, i) {
 709                 struct stat sb;
 710                 char buf[256];
 711
 712                 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
 713                         if (f->real_file_size != -1ULL)
 714                                 ret += f->real_file_size;
 715                         continue;
 716                 } else if (f->filetype != FIO_TYPE_FILE)
 717                         continue;
 718
 719                 buf[255] = '\0';
 720                 strncpy(buf, f->file_name, 255);
 721
 722                 if (stat(buf, &sb) < 0) {
 723                         if (errno != ENOENT)
 724                                 break;
 725                         strcpy(buf, ".");
 726                         if (stat(buf, &sb) < 0)
 727                                 break;
 728                 }
 729
 730                 fm = NULL;
 731                 flist_for_each(n, &list) {
 732                         fm = flist_entry(n, struct fio_mount, list);
 733                         if (fm->key == sb.st_dev)
 734                                 break;
 735
 736                         fm = NULL;
 737                 }
 738
 739                 if (fm)
 740                         continue;
 741
 742                 fm = calloc(1, sizeof(*fm));
 743                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
 744                 fm->base = basename(fm->__base);
 745                 fm->key = sb.st_dev;
 746                 flist_add(&fm->list, &list);
 747         }
 748
 749         flist_for_each_safe(n, tmp, &list) {
 750                 unsigned long long sz;
 751
 752                 fm = flist_entry(n, struct fio_mount, list);
 753                 flist_del(&fm->list);
 754
 755                 sz = get_fs_free_size(fm->base);
 756                 if (sz && sz != -1ULL)
 757                         ret += sz;
 758
 759                 free(fm);
 760         }
 761
 762         return ret;
 763 }
 764
 765 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 766 {
 767         struct thread_options *o = &td->o;
 768
 769         if (o->file_append && f->filetype == FIO_TYPE_FILE)
 770                 return f->real_file_size;
 771
 772         return td->o.start_offset +
 773                 td->subjob_number * td->o.offset_increment;
 774 }
 775
 776 /*
 777  * Open the files and setup files sizes, creating files if necessary.
 778  */
 779 int setup_files(struct thread_data *td)
 780 {
 781         unsigned long long total_size, extend_size;
 782         struct thread_options *o = &td->o;
 783         struct fio_file *f;
 784         unsigned int i, nr_fs_extra = 0;
 785         int err = 0, need_extend;
 786         int old_state;
 787         const unsigned int bs = td_min_bs(td);
 788         uint64_t fs = 0;
 789
 790         dprint(FD_FILE, "setup files\n");
 791
 792         old_state = td_bump_runstate(td, TD_SETTING_UP);
 793
 794         if (o->read_iolog_file)
 795                 goto done;
 796
 797         /*
 798          * if ioengine defines a setup() method, it's responsible for
 799          * opening the files and setting f->real_file_size to indicate
 800          * the valid range for that file.
 801          */
 802         if (td->io_ops->setup)
 803                 err = td->io_ops->setup(td);
 804         else
 805                 err = get_file_sizes(td);
 806
 807         if (err)
 808                 goto err_out;
 809
 810         /*
 811          * check sizes. if the files/devices do not exist and the size
 812          * isn't passed to fio, abort.
 813          */
 814         total_size = 0;
 815         for_each_file(td, f, i) {
 816                 f->fileno = i;
 817                 if (f->real_file_size == -1ULL)
 818                         total_size = -1ULL;
 819                 else
 820                         total_size += f->real_file_size;
 821         }
 822
 823         if (o->fill_device)
 824                 td->fill_device_size = get_fs_free_counts(td);
 825
 826         /*
 827          * device/file sizes are zero and no size given, punt
 828          */
 829         if ((!total_size || total_size == -1ULL) && !o->size &&
 830             !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
 831             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
 832                 log_err("%s: you need to specify size=\n", o->name);
 833                 td_verror(td, EINVAL, "total_file_size");
 834                 goto err_out;
 835         }
 836
 837         /*
 838          * Calculate per-file size and potential extra size for the
 839          * first files, if needed.
 840          */
 841         if (!o->file_size_low && o->nr_files) {
 842                 uint64_t all_fs;
 843
 844                 fs = o->size / o->nr_files;
 845                 all_fs = fs * o->nr_files;
 846
 847                 if (all_fs < o->size)
 848                         nr_fs_extra = (o->size - all_fs) / bs;
 849         }
 850
 851         /*
 852          * now file sizes are known, so we can set ->io_size. if size= is
 853          * not given, ->io_size is just equal to ->real_file_size. if size
 854          * is given, ->io_size is size / nr_files.
 855          */
 856         extend_size = total_size = 0;
 857         need_extend = 0;
 858         for_each_file(td, f, i) {
 859                 f->file_offset = get_start_offset(td, f);
 860
 861                 if (!o->file_size_low) {
 862                         /*
 863                          * no file size range given, file size is equal to
 864                          * total size divided by number of files. If that is
 865                          * zero, set it to the real file size. If the size
 866                          * doesn't divide nicely with the min blocksize,
 867                          * make the first files bigger.
 868                          */
 869                         f->io_size = fs;
 870                         if (nr_fs_extra) {
 871                                 nr_fs_extra--;
 872                                 f->io_size += bs;
 873                         }
 874
 875                         if (!f->io_size)
 876                                 f->io_size = f->real_file_size - f->file_offset;
 877                 } else if (f->real_file_size < o->file_size_low ||
 878                            f->real_file_size > o->file_size_high) {
 879                         if (f->file_offset > o->file_size_low)
 880                                 goto err_offset;
 881                         /*
 882                          * file size given. if it's fixed, use that. if it's a
 883                          * range, generate a random size in-between.
 884                          */
 885                         if (o->file_size_low == o->file_size_high)
 886                                 f->io_size = o->file_size_low - f->file_offset;
 887                         else {
 888                                 f->io_size = get_rand_file_size(td)
 889                                                 - f->file_offset;
 890                         }
 891                 } else
 892                         f->io_size = f->real_file_size - f->file_offset;
 893
 894                 if (f->io_size == -1ULL)
 895                         total_size = -1ULL;
 896                 else {
 897                         if (o->size_percent) {
 898                                 f->io_size = (f->io_size * o->size_percent) / 100;
 899                                 f->io_size -= (f->io_size % td_min_bs(td));
 900                         }
 901                         total_size += f->io_size;
 902                 }
 903
 904                 if (f->filetype == FIO_TYPE_FILE &&
 905                     (f->io_size + f->file_offset) > f->real_file_size &&
 906                     !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
 907                         if (!o->create_on_open) {
 908                                 need_extend++;
 909                                 extend_size += (f->io_size + f->file_offset);
 910                         } else
 911                                 f->real_file_size = f->io_size + f->file_offset;
 912                         fio_file_set_extend(f);
 913                 }
 914         }
 915
 916         if (td->o.block_error_hist) {
 917                 int len;
 918
 919                 assert(td->o.nr_files == 1);    /* checked in fixup_options */
 920                 f = td->files[0];
 921                 len = f->io_size / td->o.bs[DDIR_TRIM];
 922                 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
 923                         log_err("fio: cannot calculate block histogram with "
 924                                 "%d trim blocks, maximum %d\n",
 925                                 len, MAX_NR_BLOCK_INFOS);
 926                         td_verror(td, EINVAL, "block_error_hist");
 927                         goto err_out;
 928                 }
 929
 930                 td->ts.nr_block_infos = len;
 931                 for (i = 0; i < len; i++)
 932                         td->ts.block_infos[i] =
 933                                 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
 934         } else
 935                 td->ts.nr_block_infos = 0;
 936
 937         if (!o->size || (total_size && o->size > total_size))
 938                 o->size = total_size;
 939
 940         if (o->size < td_min_bs(td)) {
 941                 log_err("fio: blocksize too large for data set\n");
 942                 goto err_out;
 943         }
 944
 945         /*
 946          * See if we need to extend some files
 947          */
 948         if (need_extend) {
 949                 temp_stall_ts = 1;
 950                 if (output_format & FIO_OUTPUT_NORMAL)
 951                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 952                                  " %lluMB)\n", o->name, need_extend,
 953                                         extend_size >> 20);
 954
 955                 for_each_file(td, f, i) {
 956                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 957
 958                         if (!fio_file_extend(f))
 959                                 continue;
 960
 961                         assert(f->filetype == FIO_TYPE_FILE);
 962                         fio_file_clear_extend(f);
 963                         if (!o->fill_device) {
 964                                 old_len = f->real_file_size;
 965                                 extend_len = f->io_size + f->file_offset -
 966                                                 old_len;
 967                         }
 968                         f->real_file_size = (f->io_size + f->file_offset);
 969                         err = extend_file(td, f);
 970                         if (err)
 971                                 break;
 972
 973                         err = __file_invalidate_cache(td, f, old_len,
 974                                                                 extend_len);
 975
 976                         /*
 977                          * Shut up static checker
 978                          */
 979                         if (f->fd != -1)
 980                                 close(f->fd);
 981
 982                         f->fd = -1;
 983                         if (err)
 984                                 break;
 985                 }
 986                 temp_stall_ts = 0;
 987         }
 988
 989         if (err)
 990                 goto err_out;
 991
 992         if (!o->zone_size)
 993                 o->zone_size = o->size;
 994
 995         /*
 996          * iolog already set the total io size, if we read back
 997          * stored entries.
 998          */
 999         if (!o->read_iolog_file) {
1000                 if (o->io_limit)
1001                         td->total_io_size = o->io_limit * o->loops;
1002                 else
1003                         td->total_io_size = o->size * o->loops;
1004         }
1005
1006 done:
1007         if (o->create_only)
1008                 td->done = 1;
1009
1010         td_restore_runstate(td, old_state);
1011         return 0;
1012 err_offset:
1013         log_err("%s: you need to specify valid offset=\n", o->name);
1014 err_out:
1015         td_restore_runstate(td, old_state);
1016         return 1;
1017 }
1018
1019 int pre_read_files(struct thread_data *td)
1020 {
1021         struct fio_file *f;
1022         unsigned int i;
1023
1024         dprint(FD_FILE, "pre_read files\n");
1025
1026         for_each_file(td, f, i) {
1027                 pre_read_file(td, f);
1028         }
1029
1030         return 1;
1031 }
1032
1033 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1034 {
1035         unsigned int range_size, seed;
1036         unsigned long nranges;
1037         uint64_t fsize;
1038
1039         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1040         fsize = min(f->real_file_size, f->io_size);
1041
1042         nranges = (fsize + range_size - 1) / range_size;
1043
1044         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1045         if (!td->o.rand_repeatable)
1046                 seed = td->rand_seeds[4];
1047
1048         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1049                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1050         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1051                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1052         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1053                 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1054
1055         return 1;
1056 }
1057
1058 static int init_rand_distribution(struct thread_data *td)
1059 {
1060         struct fio_file *f;
1061         unsigned int i;
1062         int state;
1063
1064         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1065                 return 0;
1066
1067         state = td_bump_runstate(td, TD_SETTING_UP);
1068
1069         for_each_file(td, f, i)
1070                 __init_rand_distribution(td, f);
1071
1072         td_restore_runstate(td, state);
1073
1074         return 1;
1075 }
1076
1077 /*
1078  * Check if the number of blocks exceeds the randomness capability of
1079  * the selected generator. Tausworthe is 32-bit, the others are fullly
1080  * 64-bit capable.
1081  */
1082 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1083                                  uint64_t blocks)
1084 {
1085         if (blocks <= FRAND32_MAX)
1086                 return 0;
1087         if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1088                 return 0;
1089
1090         /*
1091          * If the user hasn't specified a random generator, switch
1092          * to tausworthe64 with informational warning. If the user did
1093          * specify one, just warn.
1094          */
1095         log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1096                         f->file_name);
1097
1098         if (!fio_option_is_set(&td->o, random_generator)) {
1099                 log_info("fio: Switching to tausworthe64. Use the "
1100                          "random_generator= option to get rid of this "
1101                          " warning.\n");
1102                 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1103                 return 0;
1104         }
1105
1106         /*
1107          * Just make this information to avoid breaking scripts.
1108          */
1109         log_info("fio: Use the random_generator= option to switch to lfsr or "
1110                          "tausworthe64.\n");
1111         return 0;
1112 }
1113
1114 int init_random_map(struct thread_data *td)
1115 {
1116         unsigned long long blocks;
1117         struct fio_file *f;
1118         unsigned int i;
1119
1120         if (init_rand_distribution(td))
1121                 return 0;
1122         if (!td_random(td))
1123                 return 0;
1124
1125         for_each_file(td, f, i) {
1126                 uint64_t fsize = min(f->real_file_size, f->io_size);
1127
1128                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1129
1130                 if (check_rand_gen_limits(td, f, blocks))
1131                         return 1;
1132
1133                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1134                         unsigned long seed;
1135
1136                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1137
1138                         if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1139                                 fio_file_set_lfsr(f);
1140                                 continue;
1141                         }
1142                 } else if (!td->o.norandommap) {
1143                         f->io_axmap = axmap_new(blocks);
1144                         if (f->io_axmap) {
1145                                 fio_file_set_axmap(f);
1146                                 continue;
1147                         }
1148                 } else if (td->o.norandommap)
1149                         continue;
1150
1151                 if (!td->o.softrandommap) {
1152                         log_err("fio: failed allocating random map. If running"
1153                                 " a large number of jobs, try the 'norandommap'"
1154                                 " option or set 'softrandommap'. Or give"
1155                                 " a larger --alloc-size to fio.\n");
1156                         return 1;
1157                 }
1158
1159                 log_info("fio: file %s failed allocating random map. Running "
1160                          "job without.\n", f->file_name);
1161         }
1162
1163         return 0;
1164 }
1165
1166 void close_files(struct thread_data *td)
1167 {
1168         struct fio_file *f;
1169         unsigned int i;
1170
1171         for_each_file(td, f, i) {
1172                 if (fio_file_open(f))
1173                         td_io_close_file(td, f);
1174         }
1175 }
1176
1177 void close_and_free_files(struct thread_data *td)
1178 {
1179         struct fio_file *f;
1180         unsigned int i;
1181
1182         dprint(FD_FILE, "close files\n");
1183
1184         for_each_file(td, f, i) {
1185                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1186                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1187                         td_io_unlink_file(td, f);
1188                 }
1189
1190                 if (fio_file_open(f))
1191                         td_io_close_file(td, f);
1192
1193                 remove_file_hash(f);
1194
1195                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1196                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1197                         td_io_unlink_file(td, f);
1198                 }
1199
1200                 sfree(f->file_name);
1201                 f->file_name = NULL;
1202                 if (fio_file_axmap(f)) {
1203                         axmap_free(f->io_axmap);
1204                         f->io_axmap = NULL;
1205                 }
1206                 sfree(f);
1207         }
1208
1209         td->o.filename = NULL;
1210         free(td->files);
1211         free(td->file_locks);
1212         td->files_index = 0;
1213         td->files = NULL;
1214         td->file_locks = NULL;
1215         td->o.file_lock_mode = FILE_LOCK_NONE;
1216         td->o.nr_files = 0;
1217 }
1218
1219 static void get_file_type(struct fio_file *f)
1220 {
1221         struct stat sb;
1222
1223         if (!strcmp(f->file_name, "-"))
1224                 f->filetype = FIO_TYPE_PIPE;
1225         else
1226                 f->filetype = FIO_TYPE_FILE;
1227
1228 #ifdef WIN32
1229         /* \\.\ is the device namespace in Windows, where every file is
1230          * a block device */
1231         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1232                 f->filetype = FIO_TYPE_BD;
1233 #endif
1234
1235         if (!stat(f->file_name, &sb)) {
1236                 if (S_ISBLK(sb.st_mode))
1237                         f->filetype = FIO_TYPE_BD;
1238                 else if (S_ISCHR(sb.st_mode))
1239                         f->filetype = FIO_TYPE_CHAR;
1240                 else if (S_ISFIFO(sb.st_mode))
1241                         f->filetype = FIO_TYPE_PIPE;
1242         }
1243 }
1244
1245 static int __is_already_allocated(const char *fname)
1246 {
1247         struct flist_head *entry;
1248         char *filename;
1249
1250         if (flist_empty(&filename_list))
1251                 return 0;
1252
1253         flist_for_each(entry, &filename_list) {
1254                 filename = flist_entry(entry, struct file_name, list)->filename;
1255
1256                 if (strcmp(filename, fname) == 0)
1257                         return 1;
1258         }
1259
1260         return 0;
1261 }
1262
1263 static int is_already_allocated(const char *fname)
1264 {
1265         int ret;
1266
1267         fio_file_hash_lock();
1268         ret = __is_already_allocated(fname);
1269         fio_file_hash_unlock();
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)) {
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
1294 static void free_already_allocated(void)
1295 {
1296         struct flist_head *entry, *tmp;
1297         struct file_name *fn;
1298
1299         if (flist_empty(&filename_list))
1300                 return;
1301
1302         fio_file_hash_lock();
1303         flist_for_each_safe(entry, tmp, &filename_list) {
1304                 fn = flist_entry(entry, struct file_name, list);
1305                 free(fn->filename);
1306                 flist_del(&fn->list);
1307                 free(fn);
1308         }
1309
1310         fio_file_hash_unlock();
1311 }
1312
1313 static struct fio_file *alloc_new_file(struct thread_data *td)
1314 {
1315         struct fio_file *f;
1316
1317         f = smalloc(sizeof(*f));
1318         if (!f) {
1319                 log_err("fio: smalloc OOM\n");
1320                 assert(0);
1321                 return NULL;
1322         }
1323
1324         f->fd = -1;
1325         f->shadow_fd = -1;
1326         fio_file_reset(td, f);
1327         return f;
1328 }
1329
1330 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1331 {
1332         int cur_files = td->files_index;
1333         char file_name[PATH_MAX];
1334         struct fio_file *f;
1335         int len = 0;
1336
1337         dprint(FD_FILE, "add file %s\n", fname);
1338
1339         if (td->o.directory)
1340                 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1341                                         td->o.unique_filename);
1342
1343         sprintf(file_name + len, "%s", fname);
1344
1345         /* clean cloned siblings using existing files */
1346         if (numjob && is_already_allocated(file_name))
1347                 return 0;
1348
1349         f = alloc_new_file(td);
1350
1351         if (td->files_size <= td->files_index) {
1352                 unsigned int new_size = td->o.nr_files + 1;
1353
1354                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1355
1356                 td->files = realloc(td->files, new_size * sizeof(f));
1357                 if (td->files == NULL) {
1358                         log_err("fio: realloc OOM\n");
1359                         assert(0);
1360                 }
1361                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1362                         td->file_locks = realloc(td->file_locks, new_size);
1363                         if (!td->file_locks) {
1364                                 log_err("fio: realloc OOM\n");
1365                                 assert(0);
1366                         }
1367                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1368                 }
1369                 td->files_size = new_size;
1370         }
1371         td->files[cur_files] = f;
1372         f->fileno = cur_files;
1373
1374         /*
1375          * init function, io engine may not be loaded yet
1376          */
1377         if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1378                 f->real_file_size = -1ULL;
1379
1380         f->file_name = smalloc_strdup(file_name);
1381         if (!f->file_name) {
1382                 log_err("fio: smalloc OOM\n");
1383                 assert(0);
1384         }
1385
1386         get_file_type(f);
1387
1388         switch (td->o.file_lock_mode) {
1389         case FILE_LOCK_NONE:
1390                 break;
1391         case FILE_LOCK_READWRITE:
1392                 f->rwlock = fio_rwlock_init();
1393                 break;
1394         case FILE_LOCK_EXCLUSIVE:
1395                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1396                 break;
1397         default:
1398                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1399                 assert(0);
1400         }
1401
1402         td->files_index++;
1403         if (f->filetype == FIO_TYPE_FILE)
1404                 td->nr_normal_files++;
1405
1406         set_already_allocated(file_name);
1407
1408         if (inc)
1409                 td->o.nr_files++;
1410
1411         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1412                                                         cur_files);
1413
1414         return cur_files;
1415 }
1416
1417 int add_file_exclusive(struct thread_data *td, const char *fname)
1418 {
1419         struct fio_file *f;
1420         unsigned int i;
1421
1422         for_each_file(td, f, i) {
1423                 if (!strcmp(f->file_name, fname))
1424                         return i;
1425         }
1426
1427         return add_file(td, fname, 0, 1);
1428 }
1429
1430 void get_file(struct fio_file *f)
1431 {
1432         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1433         assert(fio_file_open(f));
1434         f->references++;
1435 }
1436
1437 int put_file(struct thread_data *td, struct fio_file *f)
1438 {
1439         int f_ret = 0, ret = 0;
1440
1441         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1442
1443         if (!fio_file_open(f)) {
1444                 assert(f->fd == -1);
1445                 return 0;
1446         }
1447
1448         assert(f->references);
1449         if (--f->references)
1450                 return 0;
1451
1452         if (should_fsync(td) && td->o.fsync_on_close) {
1453                 f_ret = fsync(f->fd);
1454                 if (f_ret < 0)
1455                         f_ret = errno;
1456         }
1457
1458         if (td->io_ops->close_file)
1459                 ret = td->io_ops->close_file(td, f);
1460
1461         if (!ret)
1462                 ret = f_ret;
1463
1464         td->nr_open_files--;
1465         fio_file_clear_open(f);
1466         assert(f->fd == -1);
1467         return ret;
1468 }
1469
1470 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1471 {
1472         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1473                 return;
1474
1475         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1476                 if (ddir == DDIR_READ)
1477                         fio_rwlock_read(f->rwlock);
1478                 else
1479                         fio_rwlock_write(f->rwlock);
1480         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1481                 fio_mutex_down(f->lock);
1482
1483         td->file_locks[f->fileno] = td->o.file_lock_mode;
1484 }
1485
1486 void unlock_file(struct thread_data *td, struct fio_file *f)
1487 {
1488         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1489                 return;
1490
1491         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1492                 fio_rwlock_unlock(f->rwlock);
1493         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1494                 fio_mutex_up(f->lock);
1495
1496         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1497 }
1498
1499 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1500 {
1501         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1502                 return;
1503         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1504                 unlock_file(td, f);
1505 }
1506
1507 static int recurse_dir(struct thread_data *td, const char *dirname)
1508 {
1509         struct dirent *dir;
1510         int ret = 0;
1511         DIR *D;
1512
1513         D = opendir(dirname);
1514         if (!D) {
1515                 char buf[FIO_VERROR_SIZE];
1516
1517                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1518                 td_verror(td, errno, buf);
1519                 return 1;
1520         }
1521
1522         while ((dir = readdir(D)) != NULL) {
1523                 char full_path[PATH_MAX];
1524                 struct stat sb;
1525
1526                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1527                         continue;
1528
1529                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1530
1531                 if (lstat(full_path, &sb) == -1) {
1532                         if (errno != ENOENT) {
1533                                 td_verror(td, errno, "stat");
1534                                 ret = 1;
1535                                 break;
1536                         }
1537                 }
1538
1539                 if (S_ISREG(sb.st_mode)) {
1540                         add_file(td, full_path, 0, 1);
1541                         continue;
1542                 }
1543                 if (!S_ISDIR(sb.st_mode))
1544                         continue;
1545
1546                 ret = recurse_dir(td, full_path);
1547                 if (ret)
1548                         break;
1549         }
1550
1551         closedir(D);
1552         return ret;
1553 }
1554
1555 int add_dir_files(struct thread_data *td, const char *path)
1556 {
1557         int ret = recurse_dir(td, path);
1558
1559         if (!ret)
1560                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1561
1562         return ret;
1563 }
1564
1565 void dup_files(struct thread_data *td, struct thread_data *org)
1566 {
1567         struct fio_file *f;
1568         unsigned int i;
1569
1570         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1571
1572         if (!org->files)
1573                 return;
1574
1575         td->files = malloc(org->files_index * sizeof(f));
1576
1577         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1578                 td->file_locks = malloc(org->files_index);
1579
1580         for_each_file(org, f, i) {
1581                 struct fio_file *__f;
1582
1583                 __f = alloc_new_file(td);
1584
1585                 if (f->file_name) {
1586                         __f->file_name = smalloc_strdup(f->file_name);
1587                         if (!__f->file_name) {
1588                                 log_err("fio: smalloc OOM\n");
1589                                 assert(0);
1590                         }
1591
1592                         __f->filetype = f->filetype;
1593                 }
1594
1595                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1596                         __f->lock = f->lock;
1597                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1598                         __f->rwlock = f->rwlock;
1599
1600                 td->files[i] = __f;
1601         }
1602 }
1603
1604 /*
1605  * Returns the index that matches the filename, or -1 if not there
1606  */
1607 int get_fileno(struct thread_data *td, const char *fname)
1608 {
1609         struct fio_file *f;
1610         unsigned int i;
1611
1612         for_each_file(td, f, i)
1613                 if (!strcmp(f->file_name, fname))
1614                         return i;
1615
1616         return -1;
1617 }
1618
1619 /*
1620  * For log usage, where we add/open/close files automatically
1621  */
1622 void free_release_files(struct thread_data *td)
1623 {
1624         close_files(td);
1625         td->o.nr_files = 0;
1626         td->o.open_files = 0;
1627         td->files_index = 0;
1628         td->nr_normal_files = 0;
1629 }
1630
1631 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1632 {
1633         int i;
1634
1635         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1636                 f->last_pos[i] = f->file_offset;
1637                 f->last_start[i] = -1ULL;
1638         }
1639
1640         if (fio_file_axmap(f))
1641                 axmap_reset(f->io_axmap);
1642         else if (fio_file_lfsr(f))
1643                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1644 }
1645
1646 int fio_files_done(struct thread_data *td)
1647 {
1648         struct fio_file *f;
1649         unsigned int i;
1650
1651         for_each_file(td, f, i)
1652                 if (!fio_file_done(f))
1653                         return 0;
1654
1655         return 1;
1656 }
1657
1658 /* free memory used in initialization phase only */
1659 void filesetup_mem_free(void)
1660 {
1661         free_already_allocated();
1662 }