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