filesetup.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <string.h>
   4 #include <assert.h>
   5 #include <dirent.h>
   6 #include <sys/stat.h>
   7 #include <sys/mman.h>
   8 #include <sys/types.h>
   9
  10 #include "fio.h"
  11 #include "smalloc.h"
  12 #include "filehash.h"
  13
  14 static int root_warn;
  15
  16 static int extend_file(struct thread_data *td, struct fio_file *f)
  17 {
  18         int r, new_layout = 0, unlink_file = 0, flags;
  19         unsigned long long left;
  20         unsigned int bs;
  21         char *b;
  22
  23         if (read_only) {
  24                 log_err("fio: refusing extend of file due to read-only\n");
  25                 return 0;
  26         }
  27
  28         /*
  29          * check if we need to lay the file out complete again. fio
  30          * does that for operations involving reads, or for writes
  31          * where overwrite is set
  32          */
  33         if (td_read(td) || (td_write(td) && td->o.overwrite))
  34                 new_layout = 1;
  35         if (td_write(td) && !td->o.overwrite)
  36                 unlink_file = 1;
  37
  38         if (unlink_file || new_layout) {
  39                 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
  40                         td_verror(td, errno, "unlink");
  41                         return 1;
  42                 }
  43         }
  44
  45         flags = O_WRONLY | O_CREAT;
  46         if (new_layout)
  47                 flags |= O_TRUNC;
  48
  49         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  50         f->fd = open(f->file_name, flags, 0644);
  51         if (f->fd < 0) {
  52                 td_verror(td, errno, "open");
  53                 return 1;
  54         }
  55
  56         if (!new_layout)
  57                 goto done;
  58
  59         dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
  60                                                         f->real_file_size);
  61         if (ftruncate(f->fd, f->real_file_size) == -1) {
  62                 td_verror(td, errno, "ftruncate");
  63                 goto err;
  64         }
  65
  66         dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
  67                                                         f->real_file_size);
  68         if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
  69                 td_verror(td, errno, "posix_fallocate");
  70                 goto err;
  71         }
  72
  73         b = malloc(td->o.max_bs[DDIR_WRITE]);
  74         memset(b, 0, td->o.max_bs[DDIR_WRITE]);
  75
  76         left = f->real_file_size;
  77         while (left && !td->terminate) {
  78                 bs = td->o.max_bs[DDIR_WRITE];
  79                 if (bs > left)
  80                         bs = left;
  81
  82                 r = write(f->fd, b, bs);
  83
  84                 if (r == (int) bs) {
  85                         left -= bs;
  86                         continue;
  87                 } else {
  88                         if (r < 0)
  89                                 td_verror(td, errno, "write");
  90                         else
  91                                 td_verror(td, EIO, "write");
  92
  93                         break;
  94                 }
  95         }
  96
  97         if (td->terminate)
  98                 unlink(f->file_name);
  99         else if (td->o.create_fsync) {
 100                 if (fsync(f->fd) < 0) {
 101                         td_verror(td, errno, "fsync");
 102                         goto err;
 103                 }
 104         }
 105
 106         free(b);
 107 done:
 108         close(f->fd);
 109         f->fd = -1;
 110         return 0;
 111 err:
 112         close(f->fd);
 113         f->fd = -1;
 114         return 1;
 115 }
 116
 117 static unsigned long long get_rand_file_size(struct thread_data *td)
 118 {
 119         unsigned long long ret;
 120         long r;
 121
 122         r = os_random_long(&td->file_size_state);
 123         ret = td->o.file_size_low + (unsigned long long) ((double) (td->o.file_size_high - td->o.file_size_low) * (r / (RAND_MAX + 1.0)));
 124         ret -= (ret % td->o.rw_min_bs);
 125         return ret;
 126 }
 127
 128 static int file_size(struct thread_data *td, struct fio_file *f)
 129 {
 130         struct stat st;
 131
 132         if (fstat(f->fd, &st) == -1) {
 133                 td_verror(td, errno, "fstat");
 134                 return 1;
 135         }
 136
 137         f->real_file_size = st.st_size;
 138         return 0;
 139 }
 140
 141 static int bdev_size(struct thread_data *td, struct fio_file *f)
 142 {
 143         unsigned long long bytes;
 144         int r;
 145
 146         r = blockdev_size(f->fd, &bytes);
 147         if (r) {
 148                 td_verror(td, r, "blockdev_size");
 149                 return 1;
 150         }
 151
 152         f->real_file_size = bytes;
 153         return 0;
 154 }
 155
 156 static int get_file_size(struct thread_data *td, struct fio_file *f)
 157 {
 158         int ret = 0;
 159
 160         if (f->flags & FIO_SIZE_KNOWN)
 161                 return 0;
 162
 163         if (f->filetype == FIO_TYPE_FILE)
 164                 ret = file_size(td, f);
 165         else if (f->filetype == FIO_TYPE_BD)
 166                 ret = bdev_size(td, f);
 167         else
 168                 f->real_file_size = -1;
 169
 170         if (ret)
 171                 return ret;
 172
 173         if (f->file_offset > f->real_file_size) {
 174                 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
 175                 return 1;
 176         }
 177
 178         f->flags |= FIO_SIZE_KNOWN;
 179         return 0;
 180 }
 181
 182 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 183 {
 184         int ret = 0;
 185
 186         dprint(FD_IO, "invalidate cache (%d)\n", td->o.odirect);
 187
 188         if (td->o.odirect)
 189                 return 0;
 190
 191         /*
 192          * FIXME: add blockdev flushing too
 193          */
 194         if (f->mmap)
 195                 ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
 196         else if (f->filetype == FIO_TYPE_FILE)
 197                 ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
 198         else if (f->filetype == FIO_TYPE_BD) {
 199                 ret = blockdev_invalidate_cache(f->fd);
 200                 if (ret < 0 && errno == EACCES && geteuid()) {
 201                         if (!root_warn) {
 202                                 log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
 203                                 root_warn = 1;
 204                         }
 205                         ret = 0;
 206                 }
 207         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 208                 ret = 0;
 209
 210         if (ret < 0) {
 211                 td_verror(td, errno, "invalidate_cache");
 212                 return 1;
 213         }
 214
 215         return ret;
 216 }
 217
 218 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 219 {
 220         int ret = 0;
 221
 222         dprint(FD_FILE, "fd close %s\n", f->file_name);
 223
 224         remove_file_hash(f);
 225
 226         if (close(f->fd) < 0)
 227                 ret = errno;
 228
 229         f->fd = -1;
 230         return ret;
 231 }
 232
 233 static int file_lookup_open(struct fio_file *f, int flags)
 234 {
 235         struct fio_file *__f;
 236         int from_hash;
 237
 238         __f = lookup_file_hash(f->file_name);
 239         if (__f) {
 240                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 241                 /*
 242                  * racy, need the __f->lock locked
 243                  */
 244                 f->lock = __f->lock;
 245                 f->lock_owner = __f->lock_owner;
 246                 f->lock_batch = __f->lock_batch;
 247                 f->lock_ddir = __f->lock_ddir;
 248                 f->fd = dup(__f->fd);
 249                 f->references++;
 250                 from_hash = 1;
 251         } else {
 252                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 253                 f->fd = open(f->file_name, flags, 0600);
 254                 from_hash = 0;
 255         }
 256
 257         return from_hash;
 258 }
 259
 260 int generic_open_file(struct thread_data *td, struct fio_file *f)
 261 {
 262         int is_std = 0;
 263         int flags = 0;
 264         int from_hash = 0;
 265
 266         dprint(FD_FILE, "fd open %s\n", f->file_name);
 267
 268         if (!strcmp(f->file_name, "-")) {
 269                 if (td_rw(td)) {
 270                         log_err("fio: can't read/write to stdin/out\n");
 271                         return 1;
 272                 }
 273                 is_std = 1;
 274
 275                 /*
 276                  * move output logging to stderr, if we are writing to stdout
 277                  */
 278                 if (td_write(td))
 279                         f_out = stderr;
 280         }
 281
 282         if (td->o.odirect)
 283                 flags |= OS_O_DIRECT;
 284         if (td->o.sync_io)
 285                 flags |= O_SYNC;
 286         if (f->filetype != FIO_TYPE_FILE)
 287                 flags |= O_NOATIME;
 288
 289 open_again:
 290         if (td_write(td)) {
 291                 assert(!read_only);
 292
 293                 flags |= O_RDWR;
 294
 295                 if (f->filetype == FIO_TYPE_FILE)
 296                         flags |= O_CREAT;
 297
 298                 if (is_std)
 299                         f->fd = dup(STDOUT_FILENO);
 300                 else
 301                         from_hash = file_lookup_open(f, flags);
 302         } else {
 303                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 304                         flags |= O_RDWR;
 305                 else
 306                         flags |= O_RDONLY;
 307
 308                 if (is_std)
 309                         f->fd = dup(STDIN_FILENO);
 310                 else
 311                         from_hash = file_lookup_open(f, flags);
 312         }
 313
 314         if (f->fd == -1) {
 315                 char buf[FIO_VERROR_SIZE];
 316                 int __e = errno;
 317
 318                 if (errno == EPERM && (flags & O_NOATIME)) {
 319                         flags &= ~O_NOATIME;
 320                         goto open_again;
 321                 }
 322
 323                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 324
 325                 td_verror(td, __e, buf);
 326         }
 327
 328         if (get_file_size(td, f))
 329                 goto err;
 330
 331         if (!from_hash && f->fd != -1) {
 332                 if (add_file_hash(f)) {
 333                         int ret;
 334
 335                         /*
 336                          * OK to ignore, we haven't done anything with it
 337                          */
 338                         ret = generic_close_file(td, f);
 339                         goto open_again;
 340                 }
 341         }
 342
 343         return 0;
 344 err:
 345         close(f->fd);
 346         return 1;
 347 }
 348
 349 int open_files(struct thread_data *td)
 350 {
 351         struct fio_file *f;
 352         unsigned int i;
 353         int err = 0;
 354
 355         dprint(FD_FILE, "open files\n");
 356
 357         for_each_file(td, f, i) {
 358                 err = td_io_open_file(td, f);
 359                 if (err) {
 360                         if (td->error == EMFILE) {
 361                                 log_err("fio: limited open files to: %d\n", td->nr_open_files);
 362                                 td->o.open_files = td->nr_open_files;
 363                                 err = 0;
 364                                 clear_error(td);
 365                         }
 366                         break;
 367                 }
 368
 369                 if (td->o.open_files == td->nr_open_files)
 370                         break;
 371         }
 372
 373         if (!err)
 374                 return 0;
 375
 376         for_each_file(td, f, i)
 377                 td_io_close_file(td, f);
 378
 379         return err;
 380 }
 381
 382 /*
 383  * open/close all files, so that ->real_file_size gets set
 384  */
 385 static int get_file_sizes(struct thread_data *td)
 386 {
 387         struct fio_file *f;
 388         unsigned int i;
 389         int err = 0;
 390
 391         for_each_file(td, f, i) {
 392                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i, f->file_name);
 393
 394                 if (td->io_ops->open_file(td, f)) {
 395                         if (td->error != ENOENT) {
 396                                 log_err("%s\n", td->verror);
 397                                 err = 1;
 398                         }
 399                         clear_error(td);
 400                 } else {
 401                         if (td->io_ops->close_file)
 402                                 td->io_ops->close_file(td, f);
 403                 }
 404
 405                 if (f->real_file_size == -1ULL && td->o.size)
 406                         f->real_file_size = td->o.size / td->o.nr_files;
 407         }
 408
 409         return err;
 410 }
 411
 412 /*
 413  * Open the files and setup files sizes, creating files if necessary.
 414  */
 415 int setup_files(struct thread_data *td)
 416 {
 417         unsigned long long total_size, extend_size;
 418         struct fio_file *f;
 419         unsigned int i;
 420         int err = 0, need_extend;
 421
 422         dprint(FD_FILE, "setup files\n");
 423
 424         /*
 425          * if ioengine defines a setup() method, it's responsible for
 426          * opening the files and setting f->real_file_size to indicate
 427          * the valid range for that file.
 428          */
 429         if (td->io_ops->setup)
 430                 err = td->io_ops->setup(td);
 431         else
 432                 err = get_file_sizes(td);
 433
 434         if (err)
 435                 return err;
 436
 437         /*
 438          * check sizes. if the files/devices do not exist and the size
 439          * isn't passed to fio, abort.
 440          */
 441         total_size = 0;
 442         for_each_file(td, f, i) {
 443                 if (f->real_file_size == -1ULL)
 444                         total_size = -1ULL;
 445                 else
 446                         total_size += f->real_file_size;
 447         }
 448
 449         /*
 450          * device/file sizes are zero and no size given, punt
 451          */
 452         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 453             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 454                 log_err("%s: you need to specify size=\n", td->o.name);
 455                 td_verror(td, EINVAL, "total_file_size");
 456                 return 1;
 457         }
 458
 459         /*
 460          * now file sizes are known, so we can set ->io_size. if size= is
 461          * not given, ->io_size is just equal to ->real_file_size. if size
 462          * is given, ->io_size is size / nr_files.
 463          */
 464         extend_size = total_size = 0;
 465         need_extend = 0;
 466         for_each_file(td, f, i) {
 467                 f->file_offset = td->o.start_offset;
 468
 469                 if (!td->o.file_size_low) {
 470                         /*
 471                          * no file size range given, file size is equal to
 472                          * total size divided by number of files. if that is
 473                          * zero, set it to the real file size.
 474                          */
 475                         f->io_size = td->o.size / td->o.nr_files;
 476                         if (!f->io_size)
 477                                 f->io_size = f->real_file_size - f->file_offset;
 478                 } else if (f->real_file_size < td->o.file_size_low ||
 479                            f->real_file_size > td->o.file_size_high) {
 480                         if (f->file_offset > td->o.file_size_low)
 481                                 goto err_offset;
 482                         /*
 483                          * file size given. if it's fixed, use that. if it's a
 484                          * range, generate a random size in-between.
 485                          */
 486                         if (td->o.file_size_low == td->o.file_size_high)
 487                                 f->io_size = td->o.file_size_low - f->file_offset;
 488                         else
 489                                 f->io_size = get_rand_file_size(td) - f->file_offset;
 490                 } else
 491                         f->io_size = f->real_file_size - f->file_offset;
 492
 493                 if (f->io_size == -1ULL)
 494                         total_size = -1ULL;
 495                 else
 496                         total_size += f->io_size;
 497
 498                 if (f->filetype == FIO_TYPE_FILE &&
 499                     (f->io_size + f->file_offset) > f->real_file_size &&
 500                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 501                         need_extend++;
 502                         extend_size += (f->io_size + f->file_offset);
 503                         f->flags |= FIO_FILE_EXTEND;
 504                 }
 505         }
 506
 507         if (!td->o.size || td->o.size > total_size)
 508                 td->o.size = total_size;
 509
 510         /*
 511          * See if we need to extend some files
 512          */
 513         if (need_extend) {
 514                 temp_stall_ts = 1;
 515                 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
 516                         td->o.name, need_extend, extend_size >> 20);
 517
 518                 for_each_file(td, f, i) {
 519                         if (!(f->flags & FIO_FILE_EXTEND))
 520                                 continue;
 521
 522                         assert(f->filetype == FIO_TYPE_FILE);
 523                         f->flags &= ~FIO_FILE_EXTEND;
 524                         f->real_file_size = (f->io_size + f->file_offset);
 525                         err = extend_file(td, f);
 526                         if (err)
 527                                 break;
 528                 }
 529                 temp_stall_ts = 0;
 530         }
 531
 532         if (err)
 533                 return err;
 534
 535         if (!td->o.zone_size)
 536                 td->o.zone_size = td->o.size;
 537
 538         /*
 539          * iolog already set the total io size, if we read back
 540          * stored entries.
 541          */
 542         if (!td->o.read_iolog_file)
 543                 td->total_io_size = td->o.size * td->o.loops;
 544         return 0;
 545 err_offset:
 546         log_err("%s: you need to specify valid offset=\n", td->o.name);
 547         return 1;
 548 }
 549
 550 int init_random_map(struct thread_data *td)
 551 {
 552         unsigned long long blocks, num_maps;
 553         struct fio_file *f;
 554         unsigned int i;
 555
 556         if (td->o.norandommap || !td_random(td))
 557                 return 0;
 558
 559         for_each_file(td, f, i) {
 560                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) / (unsigned long long) td->o.rw_min_bs;
 561                 num_maps = (blocks + BLOCKS_PER_MAP-1)/ (unsigned long long) BLOCKS_PER_MAP;
 562                 f->file_map = smalloc(num_maps * sizeof(long));
 563                 if (!f->file_map) {
 564                         log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
 565                         return 1;
 566                 }
 567                 f->num_maps = num_maps;
 568         }
 569
 570         return 0;
 571 }
 572
 573 void close_files(struct thread_data *td)
 574 {
 575         struct fio_file *f;
 576         unsigned int i;
 577
 578         for_each_file(td, f, i)
 579                 td_io_close_file(td, f);
 580 }
 581
 582 void close_and_free_files(struct thread_data *td)
 583 {
 584         struct fio_file *f;
 585         unsigned int i;
 586
 587         dprint(FD_FILE, "close files\n");
 588
 589         for_each_file(td, f, i) {
 590                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
 591                         unlink(f->file_name);
 592
 593                 td_io_close_file(td, f);
 594
 595                 sfree(f->file_name);
 596                 f->file_name = NULL;
 597
 598                 if (f->file_map) {
 599                         sfree(f->file_map);
 600                         f->file_map = NULL;
 601                 }
 602                 sfree(f);
 603         }
 604
 605         td->o.filename = NULL;
 606         free(td->files);
 607         td->files_index = 0;
 608         td->files = NULL;
 609         td->o.nr_files = 0;
 610 }
 611
 612 static void get_file_type(struct fio_file *f)
 613 {
 614         struct stat sb;
 615
 616         if (!strcmp(f->file_name, "-"))
 617                 f->filetype = FIO_TYPE_PIPE;
 618         else
 619                 f->filetype = FIO_TYPE_FILE;
 620
 621         if (!lstat(f->file_name, &sb)) {
 622                 if (S_ISBLK(sb.st_mode))
 623                         f->filetype = FIO_TYPE_BD;
 624                 else if (S_ISCHR(sb.st_mode))
 625                         f->filetype = FIO_TYPE_CHAR;
 626                 else if (S_ISFIFO(sb.st_mode))
 627                         f->filetype = FIO_TYPE_PIPE;
 628         }
 629 }
 630
 631 int add_file(struct thread_data *td, const char *fname)
 632 {
 633         int cur_files = td->files_index;
 634         char file_name[PATH_MAX];
 635         struct fio_file *f;
 636         int len = 0;
 637
 638         dprint(FD_FILE, "add file %s\n", fname);
 639
 640         f = smalloc(sizeof(*f));
 641         f->fd = -1;
 642
 643         dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
 644
 645         td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
 646         td->files[cur_files] = f;
 647
 648         /*
 649          * init function, io engine may not be loaded yet
 650          */
 651         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 652                 f->real_file_size = -1ULL;
 653
 654         if (td->o.directory)
 655                 len = sprintf(file_name, "%s/", td->o.directory);
 656
 657         sprintf(file_name + len, "%s", fname);
 658         f->file_name = smalloc_strdup(file_name);
 659
 660         get_file_type(f);
 661
 662         switch (td->o.file_lock_mode) {
 663         case FILE_LOCK_NONE:
 664                 break;
 665         case FILE_LOCK_READWRITE:
 666                 f->lock = fio_mutex_rw_init();
 667                 break;
 668         case FILE_LOCK_EXCLUSIVE:
 669                 f->lock = fio_mutex_init(1);
 670                 break;
 671         default:
 672                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 673                 assert(0);
 674         }
 675
 676         td->files_index++;
 677         if (f->filetype == FIO_TYPE_FILE)
 678                 td->nr_normal_files++;
 679
 680         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name, cur_files);
 681
 682         return cur_files;
 683 }
 684
 685 void get_file(struct fio_file *f)
 686 {
 687         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 688         assert(f->flags & FIO_FILE_OPEN);
 689         f->references++;
 690 }
 691
 692 int put_file(struct thread_data *td, struct fio_file *f)
 693 {
 694         int f_ret = 0, ret = 0;
 695
 696         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 697
 698         if (!(f->flags & FIO_FILE_OPEN))
 699                 return 0;
 700
 701         assert(f->references);
 702         if (--f->references)
 703                 return 0;
 704
 705         if (should_fsync(td) && td->o.fsync_on_close)
 706                 f_ret = fsync(f->fd);
 707
 708         if (td->io_ops->close_file)
 709                 ret = td->io_ops->close_file(td, f);
 710
 711         if (!ret)
 712                 ret = !f_ret;
 713
 714         td->nr_open_files--;
 715         f->flags &= ~FIO_FILE_OPEN;
 716         return ret;
 717 }
 718
 719 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 720 {
 721         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 722                 return;
 723
 724         if (f->lock_owner == td && f->lock_batch--)
 725                 return;
 726
 727         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 728                 if (ddir == DDIR_READ)
 729                         fio_mutex_down_read(f->lock);
 730                 else
 731                         fio_mutex_down_write(f->lock);
 732         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 733                 fio_mutex_down(f->lock);
 734
 735         f->lock_owner = td;
 736         f->lock_batch = td->o.lockfile_batch;
 737         f->lock_ddir = ddir;
 738 }
 739
 740 void unlock_file(struct thread_data *td, struct fio_file *f)
 741 {
 742         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 743                 return;
 744         if (f->lock_batch)
 745                 return;
 746
 747         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 748                 const int is_read = f->lock_ddir == DDIR_READ;
 749                 int val = fio_mutex_getval(f->lock);
 750
 751                 if ((is_read && val == 1) || (!is_read && val == -1))
 752                         f->lock_owner = NULL;
 753
 754                 if (is_read)
 755                         fio_mutex_up_read(f->lock);
 756                 else
 757                         fio_mutex_up_write(f->lock);
 758         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 759                 int val = fio_mutex_getval(f->lock);
 760
 761                 if (val == 0)
 762                         f->lock_owner = NULL;
 763
 764                 fio_mutex_up(f->lock);
 765         }
 766 }
 767
 768 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 769 {
 770         if (f->lock_owner != td)
 771                 return;
 772
 773         f->lock_batch = 0;
 774         unlock_file(td, f);
 775 }
 776
 777 static int recurse_dir(struct thread_data *td, const char *dirname)
 778 {
 779         struct dirent *dir;
 780         int ret = 0;
 781         DIR *D;
 782
 783         D = opendir(dirname);
 784         if (!D) {
 785                 char buf[FIO_VERROR_SIZE];
 786
 787                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 788                 td_verror(td, errno, buf);
 789                 return 1;
 790         }
 791
 792         while ((dir = readdir(D)) != NULL) {
 793                 char full_path[PATH_MAX];
 794                 struct stat sb;
 795
 796                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 797                         continue;
 798
 799                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 800
 801                 if (lstat(full_path, &sb) == -1) {
 802                         if (errno != ENOENT) {
 803                                 td_verror(td, errno, "stat");
 804                                 return 1;
 805                         }
 806                 }
 807
 808                 if (S_ISREG(sb.st_mode)) {
 809                         add_file(td, full_path);
 810                         td->o.nr_files++;
 811                         continue;
 812                 }
 813                 if (!S_ISDIR(sb.st_mode))
 814                         continue;
 815
 816                 if ((ret = recurse_dir(td, full_path)) != 0)
 817                         break;
 818         }
 819
 820         closedir(D);
 821         return ret;
 822 }
 823
 824 int add_dir_files(struct thread_data *td, const char *path)
 825 {
 826         int ret = recurse_dir(td, path);
 827
 828         if (!ret)
 829                 log_info("fio: opendir added %d files\n", td->o.nr_files);
 830
 831         return ret;
 832 }
 833
 834 void dup_files(struct thread_data *td, struct thread_data *org)
 835 {
 836         struct fio_file *f;
 837         unsigned int i;
 838
 839         dprint(FD_FILE, "dup files: %d\n", org->files_index);
 840
 841         if (!org->files)
 842                 return;
 843
 844         td->files = malloc(org->files_index * sizeof(f));
 845
 846         for_each_file(org, f, i) {
 847                 struct fio_file *__f;
 848
 849                 __f = smalloc(sizeof(*__f));
 850
 851                 if (f->file_name)
 852                         __f->file_name = smalloc_strdup(f->file_name);
 853
 854                 td->files[i] = __f;
 855         }
 856 }
 857
 858 /*
 859  * Returns the index that matches the filename, or -1 if not there
 860  */
 861 int get_fileno(struct thread_data *td, const char *fname)
 862 {
 863         struct fio_file *f;
 864         unsigned int i;
 865
 866         for_each_file(td, f, i)
 867                 if (!strcmp(f->file_name, fname))
 868                         return i;
 869
 870         return -1;
 871 }
 872
 873 /*
 874  * For log usage, where we add/open/close files automatically
 875  */
 876 void free_release_files(struct thread_data *td)
 877 {
 878         close_files(td);
 879         td->files_index = 0;
 880         td->nr_normal_files = 0;
 881 }