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