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