filesetup.c

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