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 /*
  17  * Leaves f->fd open on success, caller must close
  18  */
  19 static int extend_file(struct thread_data *td, struct fio_file *f)
  20 {
  21         int r, new_layout = 0, unlink_file = 0, flags;
  22         unsigned long long left;
  23         unsigned int bs;
  24         char *b;
  25
  26         if (read_only) {
  27                 log_err("fio: refusing extend of file due to read-only\n");
  28                 return 0;
  29         }
  30
  31         /*
  32          * check if we need to lay the file out complete again. fio
  33          * does that for operations involving reads, or for writes
  34          * where overwrite is set
  35          */
  36         if (td_read(td) || (td_write(td) && td->o.overwrite) ||
  37             (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
  38                 new_layout = 1;
  39         if (td_write(td) && !td->o.overwrite)
  40                 unlink_file = 1;
  41
  42         if (unlink_file || new_layout) {
  43                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
  44                 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
  45                         td_verror(td, errno, "unlink");
  46                         return 1;
  47                 }
  48         }
  49
  50         flags = O_WRONLY | O_CREAT;
  51         if (new_layout)
  52                 flags |= O_TRUNC;
  53
  54         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  55         f->fd = open(f->file_name, flags, 0644);
  56         if (f->fd < 0) {
  57                 td_verror(td, errno, "open");
  58                 return 1;
  59         }
  60
  61         if (!new_layout)
  62                 goto done;
  63
  64         dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
  65                                                         f->real_file_size);
  66         if (ftruncate(f->fd, f->real_file_size) == -1) {
  67                 td_verror(td, errno, "ftruncate");
  68                 goto err;
  69         }
  70
  71 #ifdef FIO_HAVE_FALLOCATE
  72         dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
  73                                                         f->real_file_size);
  74         r = posix_fallocate(f->fd, 0, f->real_file_size);
  75         if (r < 0)
  76                 log_err("fio: posix_fallocate fails: %s\n", strerror(-r));
  77 #endif
  78
  79         b = malloc(td->o.max_bs[DDIR_WRITE]);
  80         memset(b, 0, td->o.max_bs[DDIR_WRITE]);
  81
  82         left = f->real_file_size;
  83         while (left && !td->terminate) {
  84                 bs = td->o.max_bs[DDIR_WRITE];
  85                 if (bs > left)
  86                         bs = left;
  87
  88                 r = write(f->fd, b, bs);
  89
  90                 if (r == (int) bs) {
  91                         left -= bs;
  92                         continue;
  93                 } else {
  94                         if (r < 0)
  95                                 td_verror(td, errno, "write");
  96                         else
  97                                 td_verror(td, EIO, "write");
  98
  99                         break;
 100                 }
 101         }
 102
 103         if (td->terminate) {
 104                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 105                 unlink(f->file_name);
 106         } else if (td->o.create_fsync) {
 107                 if (fsync(f->fd) < 0) {
 108                         td_verror(td, errno, "fsync");
 109                         goto err;
 110                 }
 111         }
 112
 113         free(b);
 114 done:
 115         return 0;
 116 err:
 117         close(f->fd);
 118         f->fd = -1;
 119         return 1;
 120 }
 121
 122 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 123 {
 124         int r, did_open = 0, old_runstate;
 125         unsigned long long left;
 126         unsigned int bs;
 127         char *b;
 128
 129         if (!(f->flags & FIO_FILE_OPEN)) {
 130                 if (td->io_ops->open_file(td, f)) {
 131                         log_err("fio: cannot pre-read, failed to open file\n");
 132                         return 1;
 133                 }
 134                 did_open = 1;
 135         }
 136
 137         old_runstate = td->runstate;
 138         td_set_runstate(td, TD_PRE_READING);
 139
 140         bs = td->o.max_bs[DDIR_READ];
 141         b = malloc(bs);
 142         memset(b, 0, bs);
 143
 144         lseek(f->fd, f->file_offset, SEEK_SET);
 145         left = f->io_size;
 146
 147         while (left && !td->terminate) {
 148                 if (bs > left)
 149                         bs = left;
 150
 151                 r = read(f->fd, b, bs);
 152
 153                 if (r == (int) bs) {
 154                         left -= bs;
 155                         continue;
 156                 } else {
 157                         td_verror(td, EIO, "pre_read");
 158                         break;
 159                 }
 160         }
 161
 162         td_set_runstate(td, old_runstate);
 163
 164         if (did_open)
 165                 td->io_ops->close_file(td, f);
 166         free(b);
 167         return 0;
 168 }
 169
 170 static unsigned long long get_rand_file_size(struct thread_data *td)
 171 {
 172         unsigned long long ret, sized;
 173         long r;
 174
 175         r = os_random_long(&td->file_size_state);
 176         sized = td->o.file_size_high - td->o.file_size_low;
 177         ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
 178         ret += td->o.file_size_low;
 179         ret -= (ret % td->o.rw_min_bs);
 180         return ret;
 181 }
 182
 183 static int file_size(struct thread_data *td, struct fio_file *f)
 184 {
 185         struct stat st;
 186
 187         if (stat(f->file_name, &st) == -1) {
 188                 td_verror(td, errno, "fstat");
 189                 return 1;
 190         }
 191
 192         f->real_file_size = st.st_size;
 193         return 0;
 194 }
 195
 196 static int bdev_size(struct thread_data *td, struct fio_file *f)
 197 {
 198         unsigned long long bytes;
 199         int r;
 200
 201         if (td->io_ops->open_file(td, f)) {
 202                 log_err("fio: failed opening blockdev %s for size check\n",
 203                         f->file_name);
 204                 return 1;
 205         }
 206
 207         r = blockdev_size(f->fd, &bytes);
 208         if (r) {
 209                 td_verror(td, r, "blockdev_size");
 210                 goto err;
 211         }
 212
 213         if (!bytes) {
 214                 log_err("%s: zero sized block device?\n", f->file_name);
 215                 goto err;
 216         }
 217
 218         f->real_file_size = bytes;
 219         return 0;
 220 err:
 221         td->io_ops->close_file(td, f);
 222         return 1;
 223 }
 224
 225 static int get_file_size(struct thread_data *td, struct fio_file *f)
 226 {
 227         int ret = 0;
 228
 229         if (f->flags & FIO_SIZE_KNOWN)
 230                 return 0;
 231
 232         if (f->filetype == FIO_TYPE_FILE)
 233                 ret = file_size(td, f);
 234         else if (f->filetype == FIO_TYPE_BD)
 235                 ret = bdev_size(td, f);
 236         else
 237                 f->real_file_size = -1;
 238
 239         if (ret)
 240                 return ret;
 241
 242         if (f->file_offset > f->real_file_size) {
 243                 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
 244                                         f->file_offset, f->real_file_size);
 245                 return 1;
 246         }
 247
 248         f->flags |= FIO_SIZE_KNOWN;
 249         return 0;
 250 }
 251
 252 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 253                                    unsigned long long off,
 254                                    unsigned long long len)
 255 {
 256         int ret = 0;
 257
 258         if (len == -1ULL) {
 259                 len = f->io_size;
 260                 if (len == -1ULL && td->o.fill_device)
 261                         return 0;
 262         }
 263         if (off == -1ULL)
 264                 off = f->file_offset;
 265
 266         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 267                                                                 len);
 268
 269         /*
 270          * FIXME: add blockdev flushing too
 271          */
 272         if (f->mmap_ptr)
 273                 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
 274         else if (f->filetype == FIO_TYPE_FILE) {
 275                 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 276         } else if (f->filetype == FIO_TYPE_BD) {
 277                 ret = blockdev_invalidate_cache(f->fd);
 278                 if (ret < 0 && errno == EACCES && geteuid()) {
 279                         if (!root_warn) {
 280                                 log_err("fio: only root may flush block "
 281                                         "devices. Cache flush bypassed!\n");
 282                                 root_warn = 1;
 283                         }
 284                         ret = 0;
 285                 }
 286         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 287                 ret = 0;
 288
 289         if (ret < 0) {
 290                 td_verror(td, errno, "invalidate_cache");
 291                 return 1;
 292         } else if (ret > 0) {
 293                 td_verror(td, ret, "invalidate_cache");
 294                 return 1;
 295         }
 296
 297         return ret;
 298
 299 }
 300
 301 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 302 {
 303         if (!(f->flags & FIO_FILE_OPEN))
 304                 return 0;
 305
 306         return __file_invalidate_cache(td, f, -1, -1);
 307 }
 308
 309 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 310 {
 311         int ret = 0;
 312
 313         dprint(FD_FILE, "fd close %s\n", f->file_name);
 314
 315         remove_file_hash(f);
 316
 317         if (close(f->fd) < 0)
 318                 ret = errno;
 319
 320         f->fd = -1;
 321         return ret;
 322 }
 323
 324 static int file_lookup_open(struct fio_file *f, int flags)
 325 {
 326         struct fio_file *__f;
 327         int from_hash;
 328
 329         __f = lookup_file_hash(f->file_name);
 330         if (__f) {
 331                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 332                 /*
 333                  * racy, need the __f->lock locked
 334                  */
 335                 f->lock = __f->lock;
 336                 f->lock_owner = __f->lock_owner;
 337                 f->lock_batch = __f->lock_batch;
 338                 f->lock_ddir = __f->lock_ddir;
 339                 from_hash = 1;
 340         } else {
 341                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 342                 from_hash = 0;
 343         }
 344
 345         f->fd = open(f->file_name, flags, 0600);
 346         return from_hash;
 347 }
 348
 349 int generic_open_file(struct thread_data *td, struct fio_file *f)
 350 {
 351         int is_std = 0;
 352         int flags = 0;
 353         int from_hash = 0;
 354
 355         dprint(FD_FILE, "fd open %s\n", f->file_name);
 356
 357         if (!strcmp(f->file_name, "-")) {
 358                 if (td_rw(td)) {
 359                         log_err("fio: can't read/write to stdin/out\n");
 360                         return 1;
 361                 }
 362                 is_std = 1;
 363
 364                 /*
 365                  * move output logging to stderr, if we are writing to stdout
 366                  */
 367                 if (td_write(td))
 368                         f_out = stderr;
 369         }
 370
 371         if (td->o.odirect)
 372                 flags |= OS_O_DIRECT;
 373         if (td->o.sync_io)
 374                 flags |= O_SYNC;
 375         if (f->filetype != FIO_TYPE_FILE)
 376                 flags |= FIO_O_NOATIME;
 377         if (td->o.create_on_open)
 378                 flags |= O_CREAT;
 379
 380 open_again:
 381         if (td_write(td)) {
 382                 if (!read_only)
 383                         flags |= O_RDWR;
 384
 385                 if (f->filetype == FIO_TYPE_FILE)
 386                         flags |= O_CREAT;
 387
 388                 if (is_std)
 389                         f->fd = dup(STDOUT_FILENO);
 390                 else
 391                         from_hash = file_lookup_open(f, flags);
 392         } else {
 393                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 394                         flags |= O_RDWR;
 395                 else
 396                         flags |= O_RDONLY;
 397
 398                 if (is_std)
 399                         f->fd = dup(STDIN_FILENO);
 400                 else
 401                         from_hash = file_lookup_open(f, flags);
 402         }
 403
 404         if (f->fd == -1) {
 405                 char buf[FIO_VERROR_SIZE];
 406                 int __e = errno;
 407
 408                 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
 409                         flags &= ~FIO_O_NOATIME;
 410                         goto open_again;
 411                 }
 412
 413                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 414
 415                 td_verror(td, __e, buf);
 416         }
 417
 418         if (!from_hash && f->fd != -1) {
 419                 if (add_file_hash(f)) {
 420                         int ret;
 421
 422                         /*
 423                          * OK to ignore, we haven't done anything with it
 424                          */
 425                         ret = generic_close_file(td, f);
 426                         goto open_again;
 427                 }
 428         }
 429
 430         return 0;
 431 }
 432
 433 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 434 {
 435         return get_file_size(td, f);
 436 }
 437
 438 /*
 439  * open/close all files, so that ->real_file_size gets set
 440  */
 441 static int get_file_sizes(struct thread_data *td)
 442 {
 443         struct fio_file *f;
 444         unsigned int i;
 445         int err = 0;
 446
 447         for_each_file(td, f, i) {
 448                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 449                                                                 f->file_name);
 450
 451                 if (td_io_get_file_size(td, f)) {
 452                         if (td->error != ENOENT) {
 453                                 log_err("%s\n", td->verror);
 454                                 err = 1;
 455                         }
 456                         clear_error(td);
 457                 }
 458
 459                 if (f->real_file_size == -1ULL && td->o.size)
 460                         f->real_file_size = td->o.size / td->o.nr_files;
 461         }
 462
 463         return err;
 464 }
 465
 466 /*
 467  * Open the files and setup files sizes, creating files if necessary.
 468  */
 469 int setup_files(struct thread_data *td)
 470 {
 471         unsigned long long total_size, extend_size;
 472         struct fio_file *f;
 473         unsigned int i;
 474         int err = 0, need_extend;
 475
 476         dprint(FD_FILE, "setup files\n");
 477
 478         if (td->o.read_iolog_file)
 479                 return 0;
 480
 481         /*
 482          * if ioengine defines a setup() method, it's responsible for
 483          * opening the files and setting f->real_file_size to indicate
 484          * the valid range for that file.
 485          */
 486         if (td->io_ops->setup)
 487                 err = td->io_ops->setup(td);
 488         else
 489                 err = get_file_sizes(td);
 490
 491         if (err)
 492                 return err;
 493
 494         /*
 495          * check sizes. if the files/devices do not exist and the size
 496          * isn't passed to fio, abort.
 497          */
 498         total_size = 0;
 499         for_each_file(td, f, i) {
 500                 if (f->real_file_size == -1ULL)
 501                         total_size = -1ULL;
 502                 else
 503                         total_size += f->real_file_size;
 504         }
 505
 506         /*
 507          * device/file sizes are zero and no size given, punt
 508          */
 509         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 510             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 511                 log_err("%s: you need to specify size=\n", td->o.name);
 512                 td_verror(td, EINVAL, "total_file_size");
 513                 return 1;
 514         }
 515
 516         /*
 517          * now file sizes are known, so we can set ->io_size. if size= is
 518          * not given, ->io_size is just equal to ->real_file_size. if size
 519          * is given, ->io_size is size / nr_files.
 520          */
 521         extend_size = total_size = 0;
 522         need_extend = 0;
 523         for_each_file(td, f, i) {
 524                 f->file_offset = td->o.start_offset;
 525
 526                 if (!td->o.file_size_low) {
 527                         /*
 528                          * no file size range given, file size is equal to
 529                          * total size divided by number of files. if that is
 530                          * zero, set it to the real file size.
 531                          */
 532                         f->io_size = td->o.size / td->o.nr_files;
 533                         if (!f->io_size)
 534                                 f->io_size = f->real_file_size - f->file_offset;
 535                 } else if (f->real_file_size < td->o.file_size_low ||
 536                            f->real_file_size > td->o.file_size_high) {
 537                         if (f->file_offset > td->o.file_size_low)
 538                                 goto err_offset;
 539                         /*
 540                          * file size given. if it's fixed, use that. if it's a
 541                          * range, generate a random size in-between.
 542                          */
 543                         if (td->o.file_size_low == td->o.file_size_high) {
 544                                 f->io_size = td->o.file_size_low
 545                                                 - f->file_offset;
 546                         } else {
 547                                 f->io_size = get_rand_file_size(td)
 548                                                 - f->file_offset;
 549                         }
 550                 } else
 551                         f->io_size = f->real_file_size - f->file_offset;
 552
 553                 if (f->io_size == -1ULL)
 554                         total_size = -1ULL;
 555                 else
 556                         total_size += f->io_size;
 557
 558                 if (f->filetype == FIO_TYPE_FILE &&
 559                     (f->io_size + f->file_offset) > f->real_file_size &&
 560                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 561                         if (!td->o.create_on_open) {
 562                                 need_extend++;
 563                                 extend_size += (f->io_size + f->file_offset);
 564                         } else
 565                                 f->real_file_size = f->io_size + f->file_offset;
 566                         f->flags |= FIO_FILE_EXTEND;
 567                 }
 568         }
 569
 570         if (!td->o.size || td->o.size > total_size)
 571                 td->o.size = total_size;
 572
 573         /*
 574          * See if we need to extend some files
 575          */
 576         if (need_extend) {
 577                 temp_stall_ts = 1;
 578                 if (!terse_output)
 579                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 580                                  " %LuMiB)\n", td->o.name, need_extend,
 581                                         extend_size >> 20);
 582
 583                 for_each_file(td, f, i) {
 584                         unsigned long long old_len, extend_len;
 585
 586                         if (!(f->flags & FIO_FILE_EXTEND))
 587                                 continue;
 588
 589                         assert(f->filetype == FIO_TYPE_FILE);
 590                         f->flags &= ~FIO_FILE_EXTEND;
 591                         old_len = f->real_file_size;
 592                         extend_len = f->io_size + f->file_offset - old_len;
 593                         f->real_file_size = (f->io_size + f->file_offset);
 594                         err = extend_file(td, f);
 595                         if (err)
 596                                 break;
 597
 598                         err = __file_invalidate_cache(td, f, old_len,
 599                                                                 extend_len);
 600                         close(f->fd);
 601                         f->fd = -1;
 602                         if (err)
 603                                 break;
 604                 }
 605                 temp_stall_ts = 0;
 606         }
 607
 608         if (err)
 609                 return err;
 610
 611         if (!td->o.zone_size)
 612                 td->o.zone_size = td->o.size;
 613
 614         /*
 615          * iolog already set the total io size, if we read back
 616          * stored entries.
 617          */
 618         if (!td->o.read_iolog_file)
 619                 td->total_io_size = td->o.size * td->o.loops;
 620         return 0;
 621 err_offset:
 622         log_err("%s: you need to specify valid offset=\n", td->o.name);
 623         return 1;
 624 }
 625
 626 int pre_read_files(struct thread_data *td)
 627 {
 628         struct fio_file *f;
 629         unsigned int i;
 630
 631         dprint(FD_FILE, "pre_read files\n");
 632
 633         for_each_file(td, f, i) {
 634                 pre_read_file(td, f);
 635         }
 636
 637         return 1;
 638 }
 639
 640 int init_random_map(struct thread_data *td)
 641 {
 642         unsigned long long blocks, num_maps;
 643         struct fio_file *f;
 644         unsigned int i;
 645
 646         if (td->o.norandommap || !td_random(td))
 647                 return 0;
 648
 649         for_each_file(td, f, i) {
 650                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
 651                                 (unsigned long long) td->o.rw_min_bs;
 652                 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
 653                                 (unsigned long long) BLOCKS_PER_MAP;
 654                 f->file_map = smalloc(num_maps * sizeof(int));
 655                 if (f->file_map) {
 656                         f->num_maps = num_maps;
 657                         continue;
 658                 }
 659                 if (!td->o.softrandommap) {
 660                         log_err("fio: failed allocating random map. If running"
 661                                 " a large number of jobs, try the 'norandommap'"
 662                                 " option or set 'softrandommap'. Or give"
 663                                 " a larger --alloc-size to fio.\n");
 664                         return 1;
 665                 }
 666
 667                 log_info("fio: file %s failed allocating random map. Running "
 668                          "job without.\n", f->file_name);
 669                 f->num_maps = 0;
 670         }
 671
 672         return 0;
 673 }
 674
 675 void close_files(struct thread_data *td)
 676 {
 677         struct fio_file *f;
 678         unsigned int i;
 679
 680         for_each_file(td, f, i)
 681                 td_io_close_file(td, f);
 682 }
 683
 684 void close_and_free_files(struct thread_data *td)
 685 {
 686         struct fio_file *f;
 687         unsigned int i;
 688
 689         dprint(FD_FILE, "close files\n");
 690
 691         for_each_file(td, f, i) {
 692                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
 693                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
 694                         unlink(f->file_name);
 695                 }
 696
 697                 td_io_close_file(td, f);
 698                 remove_file_hash(f);
 699
 700                 sfree(f->file_name);
 701                 f->file_name = NULL;
 702
 703                 if (f->file_map) {
 704                         sfree(f->file_map);
 705                         f->file_map = NULL;
 706                 }
 707                 sfree(f);
 708         }
 709
 710         td->o.filename = NULL;
 711         free(td->files);
 712         td->files_index = 0;
 713         td->files = NULL;
 714         td->o.nr_files = 0;
 715 }
 716
 717 static void get_file_type(struct fio_file *f)
 718 {
 719         struct stat sb;
 720
 721         if (!strcmp(f->file_name, "-"))
 722                 f->filetype = FIO_TYPE_PIPE;
 723         else
 724                 f->filetype = FIO_TYPE_FILE;
 725
 726         if (!lstat(f->file_name, &sb)) {
 727                 if (S_ISBLK(sb.st_mode))
 728                         f->filetype = FIO_TYPE_BD;
 729                 else if (S_ISCHR(sb.st_mode))
 730                         f->filetype = FIO_TYPE_CHAR;
 731                 else if (S_ISFIFO(sb.st_mode))
 732                         f->filetype = FIO_TYPE_PIPE;
 733         }
 734 }
 735
 736 int add_file(struct thread_data *td, const char *fname)
 737 {
 738         int cur_files = td->files_index;
 739         char file_name[PATH_MAX];
 740         struct fio_file *f;
 741         int len = 0;
 742
 743         dprint(FD_FILE, "add file %s\n", fname);
 744
 745         f = smalloc(sizeof(*f));
 746         if (!f) {
 747                 log_err("fio: smalloc OOM\n");
 748                 assert(0);
 749         }
 750
 751         f->fd = -1;
 752
 753         if (td->files_size <= td->files_index) {
 754                 int new_size = td->o.nr_files + 1;
 755
 756                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
 757
 758                 td->files = realloc(td->files, new_size * sizeof(f));
 759                 td->files_size = new_size;
 760         }
 761         td->files[cur_files] = f;
 762
 763         /*
 764          * init function, io engine may not be loaded yet
 765          */
 766         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 767                 f->real_file_size = -1ULL;
 768
 769         if (td->o.directory)
 770                 len = sprintf(file_name, "%s/", td->o.directory);
 771
 772         sprintf(file_name + len, "%s", fname);
 773         f->file_name = smalloc_strdup(file_name);
 774         if (!f->file_name) {
 775                 log_err("fio: smalloc OOM\n");
 776                 assert(0);
 777         }
 778
 779         get_file_type(f);
 780
 781         switch (td->o.file_lock_mode) {
 782         case FILE_LOCK_NONE:
 783                 break;
 784         case FILE_LOCK_READWRITE:
 785                 f->lock = fio_mutex_rw_init();
 786                 break;
 787         case FILE_LOCK_EXCLUSIVE:
 788                 f->lock = fio_mutex_init(1);
 789                 break;
 790         default:
 791                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 792                 assert(0);
 793         }
 794
 795         td->files_index++;
 796         if (f->filetype == FIO_TYPE_FILE)
 797                 td->nr_normal_files++;
 798
 799         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
 800                                                         cur_files);
 801
 802         return cur_files;
 803 }
 804
 805 void get_file(struct fio_file *f)
 806 {
 807         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 808         assert(f->flags & FIO_FILE_OPEN);
 809         f->references++;
 810 }
 811
 812 int put_file(struct thread_data *td, struct fio_file *f)
 813 {
 814         int f_ret = 0, ret = 0;
 815
 816         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 817
 818         if (!(f->flags & FIO_FILE_OPEN))
 819                 return 0;
 820
 821         assert(f->references);
 822         if (--f->references)
 823                 return 0;
 824
 825         if (should_fsync(td) && td->o.fsync_on_close)
 826                 f_ret = fsync(f->fd);
 827
 828         if (td->io_ops->close_file)
 829                 ret = td->io_ops->close_file(td, f);
 830
 831         if (!ret)
 832                 ret = f_ret;
 833
 834         td->nr_open_files--;
 835         f->flags &= ~FIO_FILE_OPEN;
 836         return ret;
 837 }
 838
 839 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 840 {
 841         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 842                 return;
 843
 844         if (f->lock_owner == td && f->lock_batch--)
 845                 return;
 846
 847         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 848                 if (ddir == DDIR_READ)
 849                         fio_mutex_down_read(f->lock);
 850                 else
 851                         fio_mutex_down_write(f->lock);
 852         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 853                 fio_mutex_down(f->lock);
 854
 855         f->lock_owner = td;
 856         f->lock_batch = td->o.lockfile_batch;
 857         f->lock_ddir = ddir;
 858 }
 859
 860 void unlock_file(struct thread_data *td, struct fio_file *f)
 861 {
 862         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 863                 return;
 864         if (f->lock_batch)
 865                 return;
 866
 867         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 868                 const int is_read = f->lock_ddir == DDIR_READ;
 869                 int val = fio_mutex_getval(f->lock);
 870
 871                 if ((is_read && val == 1) || (!is_read && val == -1))
 872                         f->lock_owner = NULL;
 873
 874                 if (is_read)
 875                         fio_mutex_up_read(f->lock);
 876                 else
 877                         fio_mutex_up_write(f->lock);
 878         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 879                 int val = fio_mutex_getval(f->lock);
 880
 881                 if (val == 0)
 882                         f->lock_owner = NULL;
 883
 884                 fio_mutex_up(f->lock);
 885         }
 886 }
 887
 888 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 889 {
 890         if (f->lock_owner != td)
 891                 return;
 892
 893         f->lock_batch = 0;
 894         unlock_file(td, f);
 895 }
 896
 897 static int recurse_dir(struct thread_data *td, const char *dirname)
 898 {
 899         struct dirent *dir;
 900         int ret = 0;
 901         DIR *D;
 902
 903         D = opendir(dirname);
 904         if (!D) {
 905                 char buf[FIO_VERROR_SIZE];
 906
 907                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 908                 td_verror(td, errno, buf);
 909                 return 1;
 910         }
 911
 912         while ((dir = readdir(D)) != NULL) {
 913                 char full_path[PATH_MAX];
 914                 struct stat sb;
 915
 916                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 917                         continue;
 918
 919                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 920
 921                 if (lstat(full_path, &sb) == -1) {
 922                         if (errno != ENOENT) {
 923                                 td_verror(td, errno, "stat");
 924                                 return 1;
 925                         }
 926                 }
 927
 928                 if (S_ISREG(sb.st_mode)) {
 929                         add_file(td, full_path);
 930                         td->o.nr_files++;
 931                         continue;
 932                 }
 933                 if (!S_ISDIR(sb.st_mode))
 934                         continue;
 935
 936                 ret = recurse_dir(td, full_path);
 937                 if (ret)
 938                         break;
 939         }
 940
 941         closedir(D);
 942         return ret;
 943 }
 944
 945 int add_dir_files(struct thread_data *td, const char *path)
 946 {
 947         int ret = recurse_dir(td, path);
 948
 949         if (!ret)
 950                 log_info("fio: opendir added %d files\n", td->o.nr_files);
 951
 952         return ret;
 953 }
 954
 955 void dup_files(struct thread_data *td, struct thread_data *org)
 956 {
 957         struct fio_file *f;
 958         unsigned int i;
 959
 960         dprint(FD_FILE, "dup files: %d\n", org->files_index);
 961
 962         if (!org->files)
 963                 return;
 964
 965         td->files = malloc(org->files_index * sizeof(f));
 966
 967         for_each_file(org, f, i) {
 968                 struct fio_file *__f;
 969
 970                 __f = smalloc(sizeof(*__f));
 971                 if (!__f) {
 972                         log_err("fio: smalloc OOM\n");
 973                         assert(0);
 974                 }
 975
 976                 if (f->file_name) {
 977                         __f->file_name = smalloc_strdup(f->file_name);
 978                         if (!__f->file_name) {
 979                                 log_err("fio: smalloc OOM\n");
 980                                 assert(0);
 981                         }
 982
 983                         __f->filetype = f->filetype;
 984                 }
 985
 986                 td->files[i] = __f;
 987         }
 988 }
 989
 990 /*
 991  * Returns the index that matches the filename, or -1 if not there
 992  */
 993 int get_fileno(struct thread_data *td, const char *fname)
 994 {
 995         struct fio_file *f;
 996         unsigned int i;
 997
 998         for_each_file(td, f, i)
 999                 if (!strcmp(f->file_name, fname))
1000                         return i;
1001
1002         return -1;
1003 }
1004
1005 /*
1006  * For log usage, where we add/open/close files automatically
1007  */
1008 void free_release_files(struct thread_data *td)
1009 {
1010         close_files(td);
1011         td->files_index = 0;
1012         td->nr_normal_files = 0;
1013 }