filesetup.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <string.h>
   4 #include <assert.h>
   5 #include <dirent.h>
   6 #include <sys/stat.h>
   7 #include <sys/mman.h>
   8 #include <sys/types.h>
   9
  10 #include "fio.h"
  11 #include "smalloc.h"
  12 #include "filehash.h"
  13
  14 static int root_warn;
  15
  16 static int extend_file(struct thread_data *td, struct fio_file *f)
  17 {
  18         int r, new_layout = 0, unlink_file = 0, flags;
  19         unsigned long long left;
  20         unsigned int bs;
  21         char *b;
  22
  23         if (read_only) {
  24                 log_err("fio: refusing extend of file due to read-only\n");
  25                 return 0;
  26         }
  27
  28         /*
  29          * check if we need to lay the file out complete again. fio
  30          * does that for operations involving reads, or for writes
  31          * where overwrite is set
  32          */
  33         if (td_read(td) || (td_write(td) && td->o.overwrite))
  34                 new_layout = 1;
  35         if (td_write(td) && !td->o.overwrite)
  36                 unlink_file = 1;
  37
  38         if (unlink_file || new_layout) {
  39                 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
  40                         td_verror(td, errno, "unlink");
  41                         return 1;
  42                 }
  43         }
  44
  45         flags = O_WRONLY | O_CREAT;
  46         if (new_layout)
  47                 flags |= O_TRUNC;
  48
  49         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  50         f->fd = open(f->file_name, flags, 0644);
  51         if (f->fd < 0) {
  52                 td_verror(td, errno, "open");
  53                 return 1;
  54         }
  55
  56         if (!new_layout)
  57                 goto done;
  58
  59         dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
  60                                                         f->real_file_size);
  61         if (ftruncate(f->fd, f->real_file_size) == -1) {
  62                 td_verror(td, errno, "ftruncate");
  63                 goto err;
  64         }
  65
  66         dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
  67                                                         f->real_file_size);
  68         if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
  69                 td_verror(td, errno, "posix_fallocate");
  70                 goto err;
  71         }
  72
  73         b = malloc(td->o.max_bs[DDIR_WRITE]);
  74         memset(b, 0, td->o.max_bs[DDIR_WRITE]);
  75
  76         left = f->real_file_size;
  77         while (left && !td->terminate) {
  78                 bs = td->o.max_bs[DDIR_WRITE];
  79                 if (bs > left)
  80                         bs = left;
  81
  82                 r = write(f->fd, b, bs);
  83
  84                 if (r == (int) bs) {
  85                         left -= bs;
  86                         continue;
  87                 } else {
  88                         if (r < 0)
  89                                 td_verror(td, errno, "write");
  90                         else
  91                                 td_verror(td, EIO, "write");
  92
  93                         break;
  94                 }
  95         }
  96
  97         if (td->terminate)
  98                 unlink(f->file_name);
  99         else if (td->o.create_fsync) {
 100                 if (fsync(f->fd) < 0) {
 101                         td_verror(td, errno, "fsync");
 102                         goto err;
 103                 }
 104         }
 105
 106         free(b);
 107 done:
 108         close(f->fd);
 109         f->fd = -1;
 110         return 0;
 111 err:
 112         close(f->fd);
 113         f->fd = -1;
 114         return 1;
 115 }
 116
 117 static unsigned long long get_rand_file_size(struct thread_data *td)
 118 {
 119         unsigned long long ret, size_d;
 120         long r;
 121
 122         r = os_random_long(&td->file_size_state);
 123         size_d = td->o.file_size_high - td->o.file_size_low;
 124         ret = (unsigned long long) ((double) size_d * (r / (RAND_MAX + 1.0)));
 125         ret += td->o.file_size_low;
 126         ret -= (ret % td->o.rw_min_bs);
 127         return ret;
 128 }
 129
 130 static int file_size(struct thread_data *td, struct fio_file *f)
 131 {
 132         struct stat st;
 133
 134         if (fstat(f->fd, &st) == -1) {
 135                 td_verror(td, errno, "fstat");
 136                 return 1;
 137         }
 138
 139         f->real_file_size = st.st_size;
 140         return 0;
 141 }
 142
 143 static int bdev_size(struct thread_data *td, struct fio_file *f)
 144 {
 145         unsigned long long bytes;
 146         int r;
 147
 148         r = blockdev_size(f->fd, &bytes);
 149         if (r) {
 150                 td_verror(td, r, "blockdev_size");
 151                 return 1;
 152         }
 153
 154         f->real_file_size = bytes;
 155         return 0;
 156 }
 157
 158 static int get_file_size(struct thread_data *td, struct fio_file *f)
 159 {
 160         int ret = 0;
 161
 162         if (f->flags & FIO_SIZE_KNOWN)
 163                 return 0;
 164
 165         if (f->filetype == FIO_TYPE_FILE)
 166                 ret = file_size(td, f);
 167         else if (f->filetype == FIO_TYPE_BD)
 168                 ret = bdev_size(td, f);
 169         else
 170                 f->real_file_size = -1;
 171
 172         if (ret)
 173                 return ret;
 174
 175         if (f->file_offset > f->real_file_size) {
 176                 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
 177                                         f->file_offset, f->real_file_size);
 178                 return 1;
 179         }
 180
 181         f->flags |= FIO_SIZE_KNOWN;
 182         return 0;
 183 }
 184
 185 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 186 {
 187         int ret = 0;
 188
 189         dprint(FD_IO, "invalidate cache (%d)\n", td->o.odirect);
 190
 191         if (td->o.odirect)
 192                 return 0;
 193
 194         /*
 195          * FIXME: add blockdev flushing too
 196          */
 197         if (f->mmap)
 198                 ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
 199         else if (f->filetype == FIO_TYPE_FILE) {
 200                 ret = fadvise(f->fd, f->file_offset, f->io_size,
 201                                                 POSIX_FADV_DONTNEED);
 202         } else if (f->filetype == FIO_TYPE_BD) {
 203                 ret = blockdev_invalidate_cache(f->fd);
 204                 if (ret < 0 && errno == EACCES && geteuid()) {
 205                         if (!root_warn) {
 206                                 log_err("fio: only root may flush block "
 207                                         "devices. Cache flush bypassed!\n");
 208                                 root_warn = 1;
 209                         }
 210                         ret = 0;
 211                 }
 212         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 213                 ret = 0;
 214
 215         if (ret < 0) {
 216                 td_verror(td, errno, "invalidate_cache");
 217                 return 1;
 218         }
 219
 220         return ret;
 221 }
 222
 223 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 224 {
 225         int ret = 0;
 226
 227         dprint(FD_FILE, "fd close %s\n", f->file_name);
 228
 229         remove_file_hash(f);
 230
 231         if (close(f->fd) < 0)
 232                 ret = errno;
 233
 234         f->fd = -1;
 235         return ret;
 236 }
 237
 238 static int file_lookup_open(struct fio_file *f, int flags)
 239 {
 240         struct fio_file *__f;
 241         int from_hash;
 242
 243         __f = lookup_file_hash(f->file_name);
 244         if (__f) {
 245                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 246                 /*
 247                  * racy, need the __f->lock locked
 248                  */
 249                 f->lock = __f->lock;
 250                 f->lock_owner = __f->lock_owner;
 251                 f->lock_batch = __f->lock_batch;
 252                 f->lock_ddir = __f->lock_ddir;
 253                 from_hash = 1;
 254         } else {
 255                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 256                 from_hash = 0;
 257         }
 258
 259         f->fd = open(f->file_name, flags, 0600);
 260         return from_hash;
 261 }
 262
 263 int generic_open_file(struct thread_data *td, struct fio_file *f)
 264 {
 265         int is_std = 0;
 266         int flags = 0;
 267         int from_hash = 0;
 268
 269         dprint(FD_FILE, "fd open %s\n", f->file_name);
 270
 271         if (!strcmp(f->file_name, "-")) {
 272                 if (td_rw(td)) {
 273                         log_err("fio: can't read/write to stdin/out\n");
 274                         return 1;
 275                 }
 276                 is_std = 1;
 277
 278                 /*
 279                  * move output logging to stderr, if we are writing to stdout
 280                  */
 281                 if (td_write(td))
 282                         f_out = stderr;
 283         }
 284
 285         if (td->o.odirect)
 286                 flags |= OS_O_DIRECT;
 287         if (td->o.sync_io)
 288                 flags |= O_SYNC;
 289         if (f->filetype != FIO_TYPE_FILE)
 290                 flags |= O_NOATIME;
 291
 292 open_again:
 293         if (td_write(td)) {
 294                 assert(!read_only);
 295
 296                 flags |= O_RDWR;
 297
 298                 if (f->filetype == FIO_TYPE_FILE)
 299                         flags |= O_CREAT;
 300
 301                 if (is_std)
 302                         f->fd = dup(STDOUT_FILENO);
 303                 else
 304                         from_hash = file_lookup_open(f, flags);
 305         } else {
 306                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 307                         flags |= O_RDWR;
 308                 else
 309                         flags |= O_RDONLY;
 310
 311                 if (is_std)
 312                         f->fd = dup(STDIN_FILENO);
 313                 else
 314                         from_hash = file_lookup_open(f, flags);
 315         }
 316
 317         if (f->fd == -1) {
 318                 char buf[FIO_VERROR_SIZE];
 319                 int __e = errno;
 320
 321                 if (errno == EPERM && (flags & O_NOATIME)) {
 322                         flags &= ~O_NOATIME;
 323                         goto open_again;
 324                 }
 325
 326                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 327
 328                 td_verror(td, __e, buf);
 329         }
 330
 331         if (get_file_size(td, f))
 332                 goto err;
 333
 334         if (!from_hash && f->fd != -1) {
 335                 if (add_file_hash(f)) {
 336                         int ret;
 337
 338                         /*
 339                          * OK to ignore, we haven't done anything with it
 340                          */
 341                         ret = generic_close_file(td, f);
 342                         goto open_again;
 343                 }
 344         }
 345
 346         return 0;
 347 err:
 348         close(f->fd);
 349         return 1;
 350 }
 351
 352 int open_files(struct thread_data *td)
 353 {
 354         struct fio_file *f;
 355         unsigned int i;
 356         int err = 0;
 357
 358         dprint(FD_FILE, "open files\n");
 359
 360         for_each_file(td, f, i) {
 361                 err = td_io_open_file(td, f);
 362                 if (err) {
 363                         if (td->error == EMFILE) {
 364                                 log_err("fio: limited open files to: %d\n",
 365                                                         td->nr_open_files);
 366                                 td->o.open_files = td->nr_open_files;
 367                                 err = 0;
 368                                 clear_error(td);
 369                         }
 370                         break;
 371                 }
 372
 373                 if (td->o.open_files == td->nr_open_files)
 374                         break;
 375         }
 376
 377         if (!err)
 378                 return 0;
 379
 380         for_each_file(td, f, i)
 381                 td_io_close_file(td, f);
 382
 383         return err;
 384 }
 385
 386 /*
 387  * open/close all files, so that ->real_file_size gets set
 388  */
 389 static int get_file_sizes(struct thread_data *td)
 390 {
 391         struct fio_file *f;
 392         unsigned int i;
 393         int err = 0;
 394
 395         for_each_file(td, f, i) {
 396                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 397                                                                 f->file_name);
 398
 399                 if (td->io_ops->open_file(td, f)) {
 400                         if (td->error != ENOENT) {
 401                                 log_err("%s\n", td->verror);
 402                                 err = 1;
 403                         }
 404                         clear_error(td);
 405                 } else {
 406                         if (td->io_ops->close_file)
 407                                 td->io_ops->close_file(td, f);
 408                 }
 409
 410                 if (f->real_file_size == -1ULL && td->o.size)
 411                         f->real_file_size = td->o.size / td->o.nr_files;
 412         }
 413
 414         return err;
 415 }
 416
 417 /*
 418  * Open the files and setup files sizes, creating files if necessary.
 419  */
 420 int setup_files(struct thread_data *td)
 421 {
 422         unsigned long long total_size, extend_size;
 423         struct fio_file *f;
 424         unsigned int i;
 425         int err = 0, need_extend;
 426
 427         dprint(FD_FILE, "setup files\n");
 428
 429         /*
 430          * if ioengine defines a setup() method, it's responsible for
 431          * opening the files and setting f->real_file_size to indicate
 432          * the valid range for that file.
 433          */
 434         if (td->io_ops->setup)
 435                 err = td->io_ops->setup(td);
 436         else
 437                 err = get_file_sizes(td);
 438
 439         if (err)
 440                 return err;
 441
 442         /*
 443          * check sizes. if the files/devices do not exist and the size
 444          * isn't passed to fio, abort.
 445          */
 446         total_size = 0;
 447         for_each_file(td, f, i) {
 448                 if (f->real_file_size == -1ULL)
 449                         total_size = -1ULL;
 450                 else
 451                         total_size += f->real_file_size;
 452         }
 453
 454         /*
 455          * device/file sizes are zero and no size given, punt
 456          */
 457         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 458             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 459                 log_err("%s: you need to specify size=\n", td->o.name);
 460                 td_verror(td, EINVAL, "total_file_size");
 461                 return 1;
 462         }
 463
 464         /*
 465          * now file sizes are known, so we can set ->io_size. if size= is
 466          * not given, ->io_size is just equal to ->real_file_size. if size
 467          * is given, ->io_size is size / nr_files.
 468          */
 469         extend_size = total_size = 0;
 470         need_extend = 0;
 471         for_each_file(td, f, i) {
 472                 f->file_offset = td->o.start_offset;
 473
 474                 if (!td->o.file_size_low) {
 475                         /*
 476                          * no file size range given, file size is equal to
 477                          * total size divided by number of files. if that is
 478                          * zero, set it to the real file size.
 479                          */
 480                         f->io_size = td->o.size / td->o.nr_files;
 481                         if (!f->io_size)
 482                                 f->io_size = f->real_file_size - f->file_offset;
 483                 } else if (f->real_file_size < td->o.file_size_low ||
 484                            f->real_file_size > td->o.file_size_high) {
 485                         if (f->file_offset > td->o.file_size_low)
 486                                 goto err_offset;
 487                         /*
 488                          * file size given. if it's fixed, use that. if it's a
 489                          * range, generate a random size in-between.
 490                          */
 491                         if (td->o.file_size_low == td->o.file_size_high) {
 492                                 f->io_size = td->o.file_size_low
 493                                                 - f->file_offset;
 494                         } else {
 495                                 f->io_size = get_rand_file_size(td)
 496                                                 - f->file_offset;
 497                         }
 498                 } else
 499                         f->io_size = f->real_file_size - f->file_offset;
 500
 501                 if (f->io_size == -1ULL)
 502                         total_size = -1ULL;
 503                 else
 504                         total_size += f->io_size;
 505
 506                 if (f->filetype == FIO_TYPE_FILE &&
 507                     (f->io_size + f->file_offset) > f->real_file_size &&
 508                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 509                         need_extend++;
 510                         extend_size += (f->io_size + f->file_offset);
 511                         f->flags |= FIO_FILE_EXTEND;
 512                 }
 513         }
 514
 515         if (!td->o.size || td->o.size > total_size)
 516                 td->o.size = total_size;
 517
 518         /*
 519          * See if we need to extend some files
 520          */
 521         if (need_extend) {
 522                 temp_stall_ts = 1;
 523                 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
 524                         td->o.name, need_extend, extend_size >> 20);
 525
 526                 for_each_file(td, f, i) {
 527                         if (!(f->flags & FIO_FILE_EXTEND))
 528                                 continue;
 529
 530                         assert(f->filetype == FIO_TYPE_FILE);
 531                         f->flags &= ~FIO_FILE_EXTEND;
 532                         f->real_file_size = (f->io_size + f->file_offset);
 533                         err = extend_file(td, f);
 534                         if (err)
 535                                 break;
 536                 }
 537                 temp_stall_ts = 0;
 538         }
 539
 540         if (err)
 541                 return err;
 542
 543         if (!td->o.zone_size)
 544                 td->o.zone_size = td->o.size;
 545
 546         /*
 547          * iolog already set the total io size, if we read back
 548          * stored entries.
 549          */
 550         if (!td->o.read_iolog_file)
 551                 td->total_io_size = td->o.size * td->o.loops;
 552         return 0;
 553 err_offset:
 554         log_err("%s: you need to specify valid offset=\n", td->o.name);
 555         return 1;
 556 }
 557
 558 int init_random_map(struct thread_data *td)
 559 {
 560         unsigned long long blocks, num_maps;
 561         struct fio_file *f;
 562         unsigned int i;
 563
 564         if (td->o.norandommap || !td_random(td))
 565                 return 0;
 566
 567         for_each_file(td, f, i) {
 568                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
 569                                 (unsigned long long) td->o.rw_min_bs;
 570                 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
 571                                 (unsigned long long) BLOCKS_PER_MAP;
 572                 f->file_map = smalloc(num_maps * sizeof(long));
 573                 if (!f->file_map) {
 574                         log_err("fio: failed allocating random map. If running"
 575                                 " a large number of jobs, try the 'norandommap'"
 576                                 " option\n");
 577                         return 1;
 578                 }
 579                 f->num_maps = num_maps;
 580         }
 581
 582         return 0;
 583 }
 584
 585 void close_files(struct thread_data *td)
 586 {
 587         struct fio_file *f;
 588         unsigned int i;
 589
 590         for_each_file(td, f, i)
 591                 td_io_close_file(td, f);
 592 }
 593
 594 void close_and_free_files(struct thread_data *td)
 595 {
 596         struct fio_file *f;
 597         unsigned int i;
 598
 599         dprint(FD_FILE, "close files\n");
 600
 601         for_each_file(td, f, i) {
 602                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
 603                         unlink(f->file_name);
 604
 605                 td_io_close_file(td, f);
 606
 607                 sfree(f->file_name);
 608                 f->file_name = NULL;
 609
 610                 if (f->file_map) {
 611                         sfree(f->file_map);
 612                         f->file_map = NULL;
 613                 }
 614                 sfree(f);
 615         }
 616
 617         td->o.filename = NULL;
 618         free(td->files);
 619         td->files_index = 0;
 620         td->files = NULL;
 621         td->o.nr_files = 0;
 622 }
 623
 624 static void get_file_type(struct fio_file *f)
 625 {
 626         struct stat sb;
 627
 628         if (!strcmp(f->file_name, "-"))
 629                 f->filetype = FIO_TYPE_PIPE;
 630         else
 631                 f->filetype = FIO_TYPE_FILE;
 632
 633         if (!lstat(f->file_name, &sb)) {
 634                 if (S_ISBLK(sb.st_mode))
 635                         f->filetype = FIO_TYPE_BD;
 636                 else if (S_ISCHR(sb.st_mode))
 637                         f->filetype = FIO_TYPE_CHAR;
 638                 else if (S_ISFIFO(sb.st_mode))
 639                         f->filetype = FIO_TYPE_PIPE;
 640         }
 641 }
 642
 643 int add_file(struct thread_data *td, const char *fname)
 644 {
 645         int cur_files = td->files_index;
 646         char file_name[PATH_MAX];
 647         struct fio_file *f;
 648         int len = 0;
 649
 650         dprint(FD_FILE, "add file %s\n", fname);
 651
 652         f = smalloc(sizeof(*f));
 653         f->fd = -1;
 654
 655         dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
 656
 657         td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
 658         td->files[cur_files] = f;
 659
 660         /*
 661          * init function, io engine may not be loaded yet
 662          */
 663         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 664                 f->real_file_size = -1ULL;
 665
 666         if (td->o.directory)
 667                 len = sprintf(file_name, "%s/", td->o.directory);
 668
 669         sprintf(file_name + len, "%s", fname);
 670         f->file_name = smalloc_strdup(file_name);
 671
 672         get_file_type(f);
 673
 674         switch (td->o.file_lock_mode) {
 675         case FILE_LOCK_NONE:
 676                 break;
 677         case FILE_LOCK_READWRITE:
 678                 f->lock = fio_mutex_rw_init();
 679                 break;
 680         case FILE_LOCK_EXCLUSIVE:
 681                 f->lock = fio_mutex_init(1);
 682                 break;
 683         default:
 684                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 685                 assert(0);
 686         }
 687
 688         td->files_index++;
 689         if (f->filetype == FIO_TYPE_FILE)
 690                 td->nr_normal_files++;
 691
 692         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
 693                                                         cur_files);
 694
 695         return cur_files;
 696 }
 697
 698 void get_file(struct fio_file *f)
 699 {
 700         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 701         assert(f->flags & FIO_FILE_OPEN);
 702         f->references++;
 703 }
 704
 705 int put_file(struct thread_data *td, struct fio_file *f)
 706 {
 707         int f_ret = 0, ret = 0;
 708
 709         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 710
 711         if (!(f->flags & FIO_FILE_OPEN))
 712                 return 0;
 713
 714         assert(f->references);
 715         if (--f->references)
 716                 return 0;
 717
 718         if (should_fsync(td) && td->o.fsync_on_close)
 719                 f_ret = fsync(f->fd);
 720
 721         if (td->io_ops->close_file)
 722                 ret = td->io_ops->close_file(td, f);
 723
 724         if (!ret)
 725                 ret = !f_ret;
 726
 727         td->nr_open_files--;
 728         f->flags &= ~FIO_FILE_OPEN;
 729         return ret;
 730 }
 731
 732 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 733 {
 734         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 735                 return;
 736
 737         if (f->lock_owner == td && f->lock_batch--)
 738                 return;
 739
 740         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 741                 if (ddir == DDIR_READ)
 742                         fio_mutex_down_read(f->lock);
 743                 else
 744                         fio_mutex_down_write(f->lock);
 745         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 746                 fio_mutex_down(f->lock);
 747
 748         f->lock_owner = td;
 749         f->lock_batch = td->o.lockfile_batch;
 750         f->lock_ddir = ddir;
 751 }
 752
 753 void unlock_file(struct thread_data *td, struct fio_file *f)
 754 {
 755         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 756                 return;
 757         if (f->lock_batch)
 758                 return;
 759
 760         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 761                 const int is_read = f->lock_ddir == DDIR_READ;
 762                 int val = fio_mutex_getval(f->lock);
 763
 764                 if ((is_read && val == 1) || (!is_read && val == -1))
 765                         f->lock_owner = NULL;
 766
 767                 if (is_read)
 768                         fio_mutex_up_read(f->lock);
 769                 else
 770                         fio_mutex_up_write(f->lock);
 771         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 772                 int val = fio_mutex_getval(f->lock);
 773
 774                 if (val == 0)
 775                         f->lock_owner = NULL;
 776
 777                 fio_mutex_up(f->lock);
 778         }
 779 }
 780
 781 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 782 {
 783         if (f->lock_owner != td)
 784                 return;
 785
 786         f->lock_batch = 0;
 787         unlock_file(td, f);
 788 }
 789
 790 static int recurse_dir(struct thread_data *td, const char *dirname)
 791 {
 792         struct dirent *dir;
 793         int ret = 0;
 794         DIR *D;
 795
 796         D = opendir(dirname);
 797         if (!D) {
 798                 char buf[FIO_VERROR_SIZE];
 799
 800                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 801                 td_verror(td, errno, buf);
 802                 return 1;
 803         }
 804
 805         while ((dir = readdir(D)) != NULL) {
 806                 char full_path[PATH_MAX];
 807                 struct stat sb;
 808
 809                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 810                         continue;
 811
 812                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 813
 814                 if (lstat(full_path, &sb) == -1) {
 815                         if (errno != ENOENT) {
 816                                 td_verror(td, errno, "stat");
 817                                 return 1;
 818                         }
 819                 }
 820
 821                 if (S_ISREG(sb.st_mode)) {
 822                         add_file(td, full_path);
 823                         td->o.nr_files++;
 824                         continue;
 825                 }
 826                 if (!S_ISDIR(sb.st_mode))
 827                         continue;
 828
 829                 ret = recurse_dir(td, full_path);
 830                 if (ret)
 831                         break;
 832         }
 833
 834         closedir(D);
 835         return ret;
 836 }
 837
 838 int add_dir_files(struct thread_data *td, const char *path)
 839 {
 840         int ret = recurse_dir(td, path);
 841
 842         if (!ret)
 843                 log_info("fio: opendir added %d files\n", td->o.nr_files);
 844
 845         return ret;
 846 }
 847
 848 void dup_files(struct thread_data *td, struct thread_data *org)
 849 {
 850         struct fio_file *f;
 851         unsigned int i;
 852
 853         dprint(FD_FILE, "dup files: %d\n", org->files_index);
 854
 855         if (!org->files)
 856                 return;
 857
 858         td->files = malloc(org->files_index * sizeof(f));
 859
 860         for_each_file(org, f, i) {
 861                 struct fio_file *__f;
 862
 863                 __f = smalloc(sizeof(*__f));
 864
 865                 if (f->file_name)
 866                         __f->file_name = smalloc_strdup(f->file_name);
 867
 868                 td->files[i] = __f;
 869         }
 870 }
 871
 872 /*
 873  * Returns the index that matches the filename, or -1 if not there
 874  */
 875 int get_fileno(struct thread_data *td, const char *fname)
 876 {
 877         struct fio_file *f;
 878         unsigned int i;
 879
 880         for_each_file(td, f, i)
 881                 if (!strcmp(f->file_name, fname))
 882                         return i;
 883
 884         return -1;
 885 }
 886
 887 /*
 888  * For log usage, where we add/open/close files automatically
 889  */
 890 void free_release_files(struct thread_data *td)
 891 {
 892         close_files(td);
 893         td->files_index = 0;
 894         td->nr_normal_files = 0;
 895 }