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