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                 from_hash = 1;
 249         } else {
 250                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 251                 from_hash = 0;
 252         }
 253
 254         f->fd = open(f->file_name, flags, 0600);
 255         return from_hash;
 256 }
 257
 258 int generic_open_file(struct thread_data *td, struct fio_file *f)
 259 {
 260         int is_std = 0;
 261         int flags = 0;
 262         int from_hash = 0;
 263
 264         dprint(FD_FILE, "fd open %s\n", f->file_name);
 265
 266         if (!strcmp(f->file_name, "-")) {
 267                 if (td_rw(td)) {
 268                         log_err("fio: can't read/write to stdin/out\n");
 269                         return 1;
 270                 }
 271                 is_std = 1;
 272
 273                 /*
 274                  * move output logging to stderr, if we are writing to stdout
 275                  */
 276                 if (td_write(td))
 277                         f_out = stderr;
 278         }
 279
 280         if (td->o.odirect)
 281                 flags |= OS_O_DIRECT;
 282         if (td->o.sync_io)
 283                 flags |= O_SYNC;
 284         if (f->filetype != FIO_TYPE_FILE)
 285                 flags |= O_NOATIME;
 286
 287 open_again:
 288         if (td_write(td)) {
 289                 assert(!read_only);
 290
 291                 flags |= O_RDWR;
 292
 293                 if (f->filetype == FIO_TYPE_FILE)
 294                         flags |= O_CREAT;
 295
 296                 if (is_std)
 297                         f->fd = dup(STDOUT_FILENO);
 298                 else
 299                         from_hash = file_lookup_open(f, flags);
 300         } else {
 301                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 302                         flags |= O_RDWR;
 303                 else
 304                         flags |= O_RDONLY;
 305
 306                 if (is_std)
 307                         f->fd = dup(STDIN_FILENO);
 308                 else
 309                         from_hash = file_lookup_open(f, flags);
 310         }
 311
 312         if (f->fd == -1) {
 313                 char buf[FIO_VERROR_SIZE];
 314                 int __e = errno;
 315
 316                 if (errno == EPERM && (flags & O_NOATIME)) {
 317                         flags &= ~O_NOATIME;
 318                         goto open_again;
 319                 }
 320
 321                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 322
 323                 td_verror(td, __e, buf);
 324         }
 325
 326         if (get_file_size(td, f))
 327                 goto err;
 328
 329         if (!from_hash && f->fd != -1) {
 330                 if (add_file_hash(f)) {
 331                         int ret;
 332
 333                         /*
 334                          * OK to ignore, we haven't done anything with it
 335                          */
 336                         ret = generic_close_file(td, f);
 337                         goto open_again;
 338                 }
 339         }
 340
 341         return 0;
 342 err:
 343         close(f->fd);
 344         return 1;
 345 }
 346
 347 int open_files(struct thread_data *td)
 348 {
 349         struct fio_file *f;
 350         unsigned int i;
 351         int err = 0;
 352
 353         dprint(FD_FILE, "open files\n");
 354
 355         for_each_file(td, f, i) {
 356                 err = td_io_open_file(td, f);
 357                 if (err) {
 358                         if (td->error == EMFILE) {
 359                                 log_err("fio: limited open files to: %d\n", td->nr_open_files);
 360                                 td->o.open_files = td->nr_open_files;
 361                                 err = 0;
 362                                 clear_error(td);
 363                         }
 364                         break;
 365                 }
 366
 367                 if (td->o.open_files == td->nr_open_files)
 368                         break;
 369         }
 370
 371         if (!err)
 372                 return 0;
 373
 374         for_each_file(td, f, i)
 375                 td_io_close_file(td, f);
 376
 377         return err;
 378 }
 379
 380 /*
 381  * open/close all files, so that ->real_file_size gets set
 382  */
 383 static int get_file_sizes(struct thread_data *td)
 384 {
 385         struct fio_file *f;
 386         unsigned int i;
 387         int err = 0;
 388
 389         for_each_file(td, f, i) {
 390                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i, f->file_name);
 391
 392                 if (td->io_ops->open_file(td, f)) {
 393                         if (td->error != ENOENT) {
 394                                 log_err("%s\n", td->verror);
 395                                 err = 1;
 396                         }
 397                         clear_error(td);
 398                 } else {
 399                         if (td->io_ops->close_file)
 400                                 td->io_ops->close_file(td, f);
 401                 }
 402
 403                 if (f->real_file_size == -1ULL && td->o.size)
 404                         f->real_file_size = td->o.size / td->o.nr_files;
 405         }
 406
 407         return err;
 408 }
 409
 410 /*
 411  * Open the files and setup files sizes, creating files if necessary.
 412  */
 413 int setup_files(struct thread_data *td)
 414 {
 415         unsigned long long total_size, extend_size;
 416         struct fio_file *f;
 417         unsigned int i;
 418         int err = 0, need_extend;
 419
 420         dprint(FD_FILE, "setup files\n");
 421
 422         /*
 423          * if ioengine defines a setup() method, it's responsible for
 424          * opening the files and setting f->real_file_size to indicate
 425          * the valid range for that file.
 426          */
 427         if (td->io_ops->setup)
 428                 err = td->io_ops->setup(td);
 429         else
 430                 err = get_file_sizes(td);
 431
 432         if (err)
 433                 return err;
 434
 435         /*
 436          * check sizes. if the files/devices do not exist and the size
 437          * isn't passed to fio, abort.
 438          */
 439         total_size = 0;
 440         for_each_file(td, f, i) {
 441                 if (f->real_file_size == -1ULL)
 442                         total_size = -1ULL;
 443                 else
 444                         total_size += f->real_file_size;
 445         }
 446
 447         /*
 448          * device/file sizes are zero and no size given, punt
 449          */
 450         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 451             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 452                 log_err("%s: you need to specify size=\n", td->o.name);
 453                 td_verror(td, EINVAL, "total_file_size");
 454                 return 1;
 455         }
 456
 457         /*
 458          * now file sizes are known, so we can set ->io_size. if size= is
 459          * not given, ->io_size is just equal to ->real_file_size. if size
 460          * is given, ->io_size is size / nr_files.
 461          */
 462         extend_size = total_size = 0;
 463         need_extend = 0;
 464         for_each_file(td, f, i) {
 465                 f->file_offset = td->o.start_offset;
 466
 467                 if (!td->o.file_size_low) {
 468                         /*
 469                          * no file size range given, file size is equal to
 470                          * total size divided by number of files. if that is
 471                          * zero, set it to the real file size.
 472                          */
 473                         f->io_size = td->o.size / td->o.nr_files;
 474                         if (!f->io_size)
 475                                 f->io_size = f->real_file_size - f->file_offset;
 476                 } else if (f->real_file_size < td->o.file_size_low ||
 477                            f->real_file_size > td->o.file_size_high) {
 478                         if (f->file_offset > td->o.file_size_low)
 479                                 goto err_offset;
 480                         /*
 481                          * file size given. if it's fixed, use that. if it's a
 482                          * range, generate a random size in-between.
 483                          */
 484                         if (td->o.file_size_low == td->o.file_size_high)
 485                                 f->io_size = td->o.file_size_low - f->file_offset;
 486                         else
 487                                 f->io_size = get_rand_file_size(td) - f->file_offset;
 488                 } else
 489                         f->io_size = f->real_file_size - f->file_offset;
 490
 491                 if (f->io_size == -1ULL)
 492                         total_size = -1ULL;
 493                 else
 494                         total_size += f->io_size;
 495
 496                 if (f->filetype == FIO_TYPE_FILE &&
 497                     (f->io_size + f->file_offset) > f->real_file_size &&
 498                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 499                         need_extend++;
 500                         extend_size += (f->io_size + f->file_offset);
 501                         f->flags |= FIO_FILE_EXTEND;
 502                 }
 503         }
 504
 505         if (!td->o.size || td->o.size > total_size)
 506                 td->o.size = total_size;
 507
 508         /*
 509          * See if we need to extend some files
 510          */
 511         if (need_extend) {
 512                 temp_stall_ts = 1;
 513                 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
 514                         td->o.name, need_extend, extend_size >> 20);
 515
 516                 for_each_file(td, f, i) {
 517                         if (!(f->flags & FIO_FILE_EXTEND))
 518                                 continue;
 519
 520                         assert(f->filetype == FIO_TYPE_FILE);
 521                         f->flags &= ~FIO_FILE_EXTEND;
 522                         f->real_file_size = (f->io_size + f->file_offset);
 523                         err = extend_file(td, f);
 524                         if (err)
 525                                 break;
 526                 }
 527                 temp_stall_ts = 0;
 528         }
 529
 530         if (err)
 531                 return err;
 532
 533         if (!td->o.zone_size)
 534                 td->o.zone_size = td->o.size;
 535
 536         /*
 537          * iolog already set the total io size, if we read back
 538          * stored entries.
 539          */
 540         if (!td->o.read_iolog_file)
 541                 td->total_io_size = td->o.size * td->o.loops;
 542         return 0;
 543 err_offset:
 544         log_err("%s: you need to specify valid offset=\n", td->o.name);
 545         return 1;
 546 }
 547
 548 int init_random_map(struct thread_data *td)
 549 {
 550         unsigned long long blocks, num_maps;
 551         struct fio_file *f;
 552         unsigned int i;
 553
 554         if (td->o.norandommap || !td_random(td))
 555                 return 0;
 556
 557         for_each_file(td, f, i) {
 558                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) / (unsigned long long) td->o.rw_min_bs;
 559                 num_maps = (blocks + BLOCKS_PER_MAP-1)/ (unsigned long long) BLOCKS_PER_MAP;
 560                 f->file_map = smalloc(num_maps * sizeof(long));
 561                 if (!f->file_map) {
 562                         log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
 563                         return 1;
 564                 }
 565                 f->num_maps = num_maps;
 566         }
 567
 568         return 0;
 569 }
 570
 571 void close_files(struct thread_data *td)
 572 {
 573         struct fio_file *f;
 574         unsigned int i;
 575
 576         for_each_file(td, f, i)
 577                 td_io_close_file(td, f);
 578 }
 579
 580 void close_and_free_files(struct thread_data *td)
 581 {
 582         struct fio_file *f;
 583         unsigned int i;
 584
 585         dprint(FD_FILE, "close files\n");
 586
 587         for_each_file(td, f, i) {
 588                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
 589                         unlink(f->file_name);
 590
 591                 td_io_close_file(td, f);
 592
 593                 sfree(f->file_name);
 594                 f->file_name = NULL;
 595
 596                 if (f->file_map) {
 597                         sfree(f->file_map);
 598                         f->file_map = NULL;
 599                 }
 600                 sfree(f);
 601         }
 602
 603         td->o.filename = NULL;
 604         free(td->files);
 605         td->files_index = 0;
 606         td->files = NULL;
 607         td->o.nr_files = 0;
 608 }
 609
 610 static void get_file_type(struct fio_file *f)
 611 {
 612         struct stat sb;
 613
 614         if (!strcmp(f->file_name, "-"))
 615                 f->filetype = FIO_TYPE_PIPE;
 616         else
 617                 f->filetype = FIO_TYPE_FILE;
 618
 619         if (!lstat(f->file_name, &sb)) {
 620                 if (S_ISBLK(sb.st_mode))
 621                         f->filetype = FIO_TYPE_BD;
 622                 else if (S_ISCHR(sb.st_mode))
 623                         f->filetype = FIO_TYPE_CHAR;
 624                 else if (S_ISFIFO(sb.st_mode))
 625                         f->filetype = FIO_TYPE_PIPE;
 626         }
 627 }
 628
 629 int add_file(struct thread_data *td, const char *fname)
 630 {
 631         int cur_files = td->files_index;
 632         char file_name[PATH_MAX];
 633         struct fio_file *f;
 634         int len = 0;
 635
 636         dprint(FD_FILE, "add file %s\n", fname);
 637
 638         f = smalloc(sizeof(*f));
 639         f->fd = -1;
 640
 641         dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
 642
 643         td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
 644         td->files[cur_files] = f;
 645
 646         /*
 647          * init function, io engine may not be loaded yet
 648          */
 649         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 650                 f->real_file_size = -1ULL;
 651
 652         if (td->o.directory)
 653                 len = sprintf(file_name, "%s/", td->o.directory);
 654
 655         sprintf(file_name + len, "%s", fname);
 656         f->file_name = smalloc_strdup(file_name);
 657
 658         get_file_type(f);
 659
 660         switch (td->o.file_lock_mode) {
 661         case FILE_LOCK_NONE:
 662                 break;
 663         case FILE_LOCK_READWRITE:
 664                 f->lock = fio_mutex_rw_init();
 665                 break;
 666         case FILE_LOCK_EXCLUSIVE:
 667                 f->lock = fio_mutex_init(1);
 668                 break;
 669         default:
 670                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 671                 assert(0);
 672         }
 673
 674         td->files_index++;
 675         if (f->filetype == FIO_TYPE_FILE)
 676                 td->nr_normal_files++;
 677
 678         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name, cur_files);
 679
 680         return cur_files;
 681 }
 682
 683 void get_file(struct fio_file *f)
 684 {
 685         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 686         assert(f->flags & FIO_FILE_OPEN);
 687         f->references++;
 688 }
 689
 690 int put_file(struct thread_data *td, struct fio_file *f)
 691 {
 692         int f_ret = 0, ret = 0;
 693
 694         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 695
 696         if (!(f->flags & FIO_FILE_OPEN))
 697                 return 0;
 698
 699         assert(f->references);
 700         if (--f->references)
 701                 return 0;
 702
 703         if (should_fsync(td) && td->o.fsync_on_close)
 704                 f_ret = fsync(f->fd);
 705
 706         if (td->io_ops->close_file)
 707                 ret = td->io_ops->close_file(td, f);
 708
 709         if (!ret)
 710                 ret = !f_ret;
 711
 712         td->nr_open_files--;
 713         f->flags &= ~FIO_FILE_OPEN;
 714         return ret;
 715 }
 716
 717 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 718 {
 719         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 720                 return;
 721
 722         if (f->lock_owner == td && f->lock_batch--)
 723                 return;
 724
 725         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 726                 if (ddir == DDIR_READ)
 727                         fio_mutex_down_read(f->lock);
 728                 else
 729                         fio_mutex_down_write(f->lock);
 730         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 731                 fio_mutex_down(f->lock);
 732
 733         f->lock_owner = td;
 734         f->lock_batch = td->o.lockfile_batch;
 735         f->lock_ddir = ddir;
 736 }
 737
 738 void unlock_file(struct thread_data *td, struct fio_file *f)
 739 {
 740         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 741                 return;
 742         if (f->lock_batch)
 743                 return;
 744
 745         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 746                 const int is_read = f->lock_ddir == DDIR_READ;
 747                 int val = fio_mutex_getval(f->lock);
 748
 749                 if ((is_read && val == 1) || (!is_read && val == -1))
 750                         f->lock_owner = NULL;
 751
 752                 if (is_read)
 753                         fio_mutex_up_read(f->lock);
 754                 else
 755                         fio_mutex_up_write(f->lock);
 756         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 757                 int val = fio_mutex_getval(f->lock);
 758
 759                 if (val == 0)
 760                         f->lock_owner = NULL;
 761
 762                 fio_mutex_up(f->lock);
 763         }
 764 }
 765
 766 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 767 {
 768         if (f->lock_owner != td)
 769                 return;
 770
 771         f->lock_batch = 0;
 772         unlock_file(td, f);
 773 }
 774
 775 static int recurse_dir(struct thread_data *td, const char *dirname)
 776 {
 777         struct dirent *dir;
 778         int ret = 0;
 779         DIR *D;
 780
 781         D = opendir(dirname);
 782         if (!D) {
 783                 char buf[FIO_VERROR_SIZE];
 784
 785                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 786                 td_verror(td, errno, buf);
 787                 return 1;
 788         }
 789
 790         while ((dir = readdir(D)) != NULL) {
 791                 char full_path[PATH_MAX];
 792                 struct stat sb;
 793
 794                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 795                         continue;
 796
 797                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 798
 799                 if (lstat(full_path, &sb) == -1) {
 800                         if (errno != ENOENT) {
 801                                 td_verror(td, errno, "stat");
 802                                 return 1;
 803                         }
 804                 }
 805
 806                 if (S_ISREG(sb.st_mode)) {
 807                         add_file(td, full_path);
 808                         td->o.nr_files++;
 809                         continue;
 810                 }
 811                 if (!S_ISDIR(sb.st_mode))
 812                         continue;
 813
 814                 if ((ret = recurse_dir(td, full_path)) != 0)
 815                         break;
 816         }
 817
 818         closedir(D);
 819         return ret;
 820 }
 821
 822 int add_dir_files(struct thread_data *td, const char *path)
 823 {
 824         int ret = recurse_dir(td, path);
 825
 826         if (!ret)
 827                 log_info("fio: opendir added %d files\n", td->o.nr_files);
 828
 829         return ret;
 830 }
 831
 832 void dup_files(struct thread_data *td, struct thread_data *org)
 833 {
 834         struct fio_file *f;
 835         unsigned int i;
 836
 837         dprint(FD_FILE, "dup files: %d\n", org->files_index);
 838
 839         if (!org->files)
 840                 return;
 841
 842         td->files = malloc(org->files_index * sizeof(f));
 843
 844         for_each_file(org, f, i) {
 845                 struct fio_file *__f;
 846
 847                 __f = smalloc(sizeof(*__f));
 848
 849                 if (f->file_name)
 850                         __f->file_name = smalloc_strdup(f->file_name);
 851
 852                 td->files[i] = __f;
 853         }
 854 }
 855
 856 /*
 857  * Returns the index that matches the filename, or -1 if not there
 858  */
 859 int get_fileno(struct thread_data *td, const char *fname)
 860 {
 861         struct fio_file *f;
 862         unsigned int i;
 863
 864         for_each_file(td, f, i)
 865                 if (!strcmp(f->file_name, fname))
 866                         return i;
 867
 868         return -1;
 869 }
 870
 871 /*
 872  * For log usage, where we add/open/close files automatically
 873  */
 874 void free_release_files(struct thread_data *td)
 875 {
 876         close_files(td);
 877         td->files_index = 0;
 878         td->nr_normal_files = 0;
 879 }