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 inline void clear_error(struct thread_data *td)
  17 {
  18         td->error = 0;
  19         td->verror[0] = '\0';
  20 }
  21
  22 /*
  23  * Leaves f->fd open on success, caller must close
  24  */
  25 static int extend_file(struct thread_data *td, struct fio_file *f)
  26 {
  27         int r, new_layout = 0, unlink_file = 0, flags;
  28         unsigned long long left;
  29         unsigned int bs;
  30         char *b;
  31
  32         if (read_only) {
  33                 log_err("fio: refusing extend of file due to read-only\n");
  34                 return 0;
  35         }
  36
  37         /*
  38          * check if we need to lay the file out complete again. fio
  39          * does that for operations involving reads, or for writes
  40          * where overwrite is set
  41          */
  42         if (td_read(td) || (td_write(td) && td->o.overwrite) ||
  43             (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
  44                 new_layout = 1;
  45         if (td_write(td) && !td->o.overwrite)
  46                 unlink_file = 1;
  47
  48         if (unlink_file || new_layout) {
  49                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
  50                 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
  51                         td_verror(td, errno, "unlink");
  52                         return 1;
  53                 }
  54         }
  55
  56         flags = O_WRONLY | O_CREAT;
  57         if (new_layout)
  58                 flags |= O_TRUNC;
  59
  60         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  61         f->fd = open(f->file_name, flags, 0644);
  62         if (f->fd < 0) {
  63                 td_verror(td, errno, "open");
  64                 return 1;
  65         }
  66
  67         if (!new_layout)
  68                 goto done;
  69
  70         /*
  71          * The size will be -1ULL when fill_device is used, so don't truncate
  72          * or fallocate this file, just write it
  73          */
  74         if (!td->o.fill_device) {
  75                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
  76                                                         f->real_file_size);
  77                 if (ftruncate(f->fd, f->real_file_size) == -1) {
  78                         td_verror(td, errno, "ftruncate");
  79                         goto err;
  80                 }
  81
  82 #ifdef FIO_HAVE_FALLOCATE
  83                 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
  84                                                         f->real_file_size);
  85                 r = posix_fallocate(f->fd, 0, f->real_file_size);
  86                 if (r < 0) {
  87                         log_err("fio: posix_fallocate fails: %s\n",
  88                                         strerror(-r));
  89                 }
  90 #endif
  91         }
  92
  93         b = malloc(td->o.max_bs[DDIR_WRITE]);
  94         memset(b, 0, td->o.max_bs[DDIR_WRITE]);
  95
  96         left = f->real_file_size;
  97         while (left && !td->terminate) {
  98                 bs = td->o.max_bs[DDIR_WRITE];
  99                 if (bs > left)
 100                         bs = left;
 101
 102                 r = write(f->fd, b, bs);
 103
 104                 if (r > 0) {
 105                         left -= r;
 106                         continue;
 107                 } else {
 108                         if (r < 0) {
 109                                 int __e = errno;
 110
 111                                 if (__e == ENOSPC) {
 112                                         if (td->o.fill_device)
 113                                                 break;
 114                                         log_info("fio: ENOSPC on laying out "
 115                                                  "file, stopping\n");
 116                                         break;
 117                                 }
 118                                 td_verror(td, errno, "write");
 119                         } else
 120                                 td_verror(td, EIO, "write");
 121
 122                         break;
 123                 }
 124         }
 125
 126         if (td->terminate) {
 127                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 128                 unlink(f->file_name);
 129         } else if (td->o.create_fsync) {
 130                 if (fsync(f->fd) < 0) {
 131                         td_verror(td, errno, "fsync");
 132                         goto err;
 133                 }
 134         }
 135         if (td->o.fill_device && !td_write(td)) {
 136                 fio_file_clear_size_known(f);
 137                 if (td_io_get_file_size(td, f))
 138                         goto err;
 139                 if (f->io_size > f->real_file_size)
 140                         f->io_size = f->real_file_size;
 141         }
 142
 143         free(b);
 144 done:
 145         return 0;
 146 err:
 147         close(f->fd);
 148         f->fd = -1;
 149         return 1;
 150 }
 151
 152 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 153 {
 154         int r, did_open = 0, old_runstate;
 155         unsigned long long left;
 156         unsigned int bs;
 157         char *b;
 158
 159         if (td->io_ops->flags & FIO_PIPEIO)
 160                 return 0;
 161
 162         if (!fio_file_open(f)) {
 163                 if (td->io_ops->open_file(td, f)) {
 164                         log_err("fio: cannot pre-read, failed to open file\n");
 165                         return 1;
 166                 }
 167                 did_open = 1;
 168         }
 169
 170         old_runstate = td->runstate;
 171         td_set_runstate(td, TD_PRE_READING);
 172
 173         bs = td->o.max_bs[DDIR_READ];
 174         b = malloc(bs);
 175         memset(b, 0, bs);
 176
 177         lseek(f->fd, f->file_offset, SEEK_SET);
 178         left = f->io_size;
 179
 180         while (left && !td->terminate) {
 181                 if (bs > left)
 182                         bs = left;
 183
 184                 r = read(f->fd, b, bs);
 185
 186                 if (r == (int) bs) {
 187                         left -= bs;
 188                         continue;
 189                 } else {
 190                         td_verror(td, EIO, "pre_read");
 191                         break;
 192                 }
 193         }
 194
 195         td_set_runstate(td, old_runstate);
 196
 197         if (did_open)
 198                 td->io_ops->close_file(td, f);
 199         free(b);
 200         return 0;
 201 }
 202
 203 static unsigned long long get_rand_file_size(struct thread_data *td)
 204 {
 205         unsigned long long ret, sized;
 206         long r;
 207
 208         r = os_random_long(&td->file_size_state);
 209         sized = td->o.file_size_high - td->o.file_size_low;
 210         ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
 211         ret += td->o.file_size_low;
 212         ret -= (ret % td->o.rw_min_bs);
 213         return ret;
 214 }
 215
 216 static int file_size(struct thread_data *td, struct fio_file *f)
 217 {
 218         struct stat st;
 219
 220         if (stat(f->file_name, &st) == -1) {
 221                 td_verror(td, errno, "fstat");
 222                 return 1;
 223         }
 224
 225         f->real_file_size = st.st_size;
 226         return 0;
 227 }
 228
 229 static int bdev_size(struct thread_data *td, struct fio_file *f)
 230 {
 231         unsigned long long bytes;
 232         int r;
 233
 234         if (td->io_ops->open_file(td, f)) {
 235                 log_err("fio: failed opening blockdev %s for size check\n",
 236                         f->file_name);
 237                 return 1;
 238         }
 239
 240         r = blockdev_size(f->fd, &bytes);
 241         if (r) {
 242                 td_verror(td, r, "blockdev_size");
 243                 goto err;
 244         }
 245
 246         if (!bytes) {
 247                 log_err("%s: zero sized block device?\n", f->file_name);
 248                 goto err;
 249         }
 250
 251         f->real_file_size = bytes;
 252         td->io_ops->close_file(td, f);
 253         return 0;
 254 err:
 255         td->io_ops->close_file(td, f);
 256         return 1;
 257 }
 258
 259 static int get_file_size(struct thread_data *td, struct fio_file *f)
 260 {
 261         int ret = 0;
 262
 263         if (fio_file_size_known(f))
 264                 return 0;
 265
 266         if (f->filetype == FIO_TYPE_FILE)
 267                 ret = file_size(td, f);
 268         else if (f->filetype == FIO_TYPE_BD)
 269                 ret = bdev_size(td, f);
 270         else
 271                 f->real_file_size = -1;
 272
 273         if (ret)
 274                 return ret;
 275
 276         if (f->file_offset > f->real_file_size) {
 277                 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
 278                                         f->file_offset, f->real_file_size);
 279                 return 1;
 280         }
 281
 282         fio_file_set_size_known(f);
 283         return 0;
 284 }
 285
 286 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 287                                    unsigned long long off,
 288                                    unsigned long long len)
 289 {
 290         int ret = 0;
 291
 292         if (len == -1ULL)
 293                 len = f->io_size;
 294         if (off == -1ULL)
 295                 off = f->file_offset;
 296
 297         if (len == -1ULL || off == -1ULL)
 298                 return 0;
 299
 300         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 301                                                                 len);
 302
 303         /*
 304          * FIXME: add blockdev flushing too
 305          */
 306         if (f->mmap_ptr)
 307                 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
 308         else if (f->filetype == FIO_TYPE_FILE) {
 309                 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 310         } else if (f->filetype == FIO_TYPE_BD) {
 311                 ret = blockdev_invalidate_cache(f->fd);
 312                 if (ret < 0 && errno == EACCES && geteuid()) {
 313                         if (!root_warn) {
 314                                 log_err("fio: only root may flush block "
 315                                         "devices. Cache flush bypassed!\n");
 316                                 root_warn = 1;
 317                         }
 318                         ret = 0;
 319                 }
 320         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 321                 ret = 0;
 322
 323         if (ret < 0) {
 324                 td_verror(td, errno, "invalidate_cache");
 325                 return 1;
 326         } else if (ret > 0) {
 327                 td_verror(td, ret, "invalidate_cache");
 328                 return 1;
 329         }
 330
 331         return ret;
 332
 333 }
 334
 335 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 336 {
 337         if (!fio_file_open(f))
 338                 return 0;
 339
 340         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 341 }
 342
 343 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 344 {
 345         int ret = 0;
 346
 347         dprint(FD_FILE, "fd close %s\n", f->file_name);
 348
 349         remove_file_hash(f);
 350
 351         if (close(f->fd) < 0)
 352                 ret = errno;
 353
 354         f->fd = -1;
 355         return ret;
 356 }
 357
 358 static int file_lookup_open(struct fio_file *f, int flags)
 359 {
 360         struct fio_file *__f;
 361         int from_hash;
 362
 363         __f = lookup_file_hash(f->file_name);
 364         if (__f) {
 365                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 366                 /*
 367                  * racy, need the __f->lock locked
 368                  */
 369                 f->lock = __f->lock;
 370                 f->lock_owner = __f->lock_owner;
 371                 f->lock_batch = __f->lock_batch;
 372                 f->lock_ddir = __f->lock_ddir;
 373                 from_hash = 1;
 374         } else {
 375                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 376                 from_hash = 0;
 377         }
 378
 379         f->fd = open(f->file_name, flags, 0600);
 380         return from_hash;
 381 }
 382
 383 int generic_open_file(struct thread_data *td, struct fio_file *f)
 384 {
 385         int is_std = 0;
 386         int flags = 0;
 387         int from_hash = 0;
 388
 389         dprint(FD_FILE, "fd open %s\n", f->file_name);
 390
 391         if (!strcmp(f->file_name, "-")) {
 392                 if (td_rw(td)) {
 393                         log_err("fio: can't read/write to stdin/out\n");
 394                         return 1;
 395                 }
 396                 is_std = 1;
 397
 398                 /*
 399                  * move output logging to stderr, if we are writing to stdout
 400                  */
 401                 if (td_write(td))
 402                         f_out = stderr;
 403         }
 404
 405         if (td->o.odirect)
 406                 flags |= OS_O_DIRECT;
 407         if (td->o.sync_io)
 408                 flags |= O_SYNC;
 409         if (f->filetype != FIO_TYPE_FILE)
 410                 flags |= FIO_O_NOATIME;
 411         if (td->o.create_on_open)
 412                 flags |= O_CREAT;
 413
 414 open_again:
 415         if (td_write(td)) {
 416                 if (!read_only)
 417                         flags |= O_RDWR;
 418
 419                 if (f->filetype == FIO_TYPE_FILE)
 420                         flags |= O_CREAT;
 421
 422                 if (is_std)
 423                         f->fd = dup(STDOUT_FILENO);
 424                 else
 425                         from_hash = file_lookup_open(f, flags);
 426         } else {
 427                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 428                         flags |= O_RDWR;
 429                 else
 430                         flags |= O_RDONLY;
 431
 432                 if (is_std)
 433                         f->fd = dup(STDIN_FILENO);
 434                 else
 435                         from_hash = file_lookup_open(f, flags);
 436         }
 437
 438         if (f->fd == -1) {
 439                 char buf[FIO_VERROR_SIZE];
 440                 int __e = errno;
 441
 442                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 443                         flags &= ~FIO_O_NOATIME;
 444                         goto open_again;
 445                 }
 446
 447                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 448
 449                 td_verror(td, __e, buf);
 450         }
 451
 452         if (!from_hash && f->fd != -1) {
 453                 if (add_file_hash(f)) {
 454                         int ret;
 455
 456                         /*
 457                          * OK to ignore, we haven't done anything with it
 458                          */
 459                         ret = generic_close_file(td, f);
 460                         goto open_again;
 461                 }
 462         }
 463
 464         return 0;
 465 }
 466
 467 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 468 {
 469         return get_file_size(td, f);
 470 }
 471
 472 /*
 473  * open/close all files, so that ->real_file_size gets set
 474  */
 475 static int get_file_sizes(struct thread_data *td)
 476 {
 477         struct fio_file *f;
 478         unsigned int i;
 479         int err = 0;
 480
 481         for_each_file(td, f, i) {
 482                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 483                                                                 f->file_name);
 484
 485                 if (td_io_get_file_size(td, f)) {
 486                         if (td->error != ENOENT) {
 487                                 log_err("%s\n", td->verror);
 488                                 err = 1;
 489                         }
 490                         clear_error(td);
 491                 }
 492
 493                 if (f->real_file_size == -1ULL && td->o.size)
 494                         f->real_file_size = td->o.size / td->o.nr_files;
 495         }
 496
 497         return err;
 498 }
 499
 500 /*
 501  * Open the files and setup files sizes, creating files if necessary.
 502  */
 503 int setup_files(struct thread_data *td)
 504 {
 505         unsigned long long total_size, extend_size;
 506         struct fio_file *f;
 507         unsigned int i;
 508         int err = 0, need_extend;
 509
 510         dprint(FD_FILE, "setup files\n");
 511
 512         if (td->o.read_iolog_file)
 513                 return 0;
 514
 515         /*
 516          * if ioengine defines a setup() method, it's responsible for
 517          * opening the files and setting f->real_file_size to indicate
 518          * the valid range for that file.
 519          */
 520         if (td->io_ops->setup)
 521                 err = td->io_ops->setup(td);
 522         else
 523                 err = get_file_sizes(td);
 524
 525         if (err)
 526                 return err;
 527
 528         /*
 529          * check sizes. if the files/devices do not exist and the size
 530          * isn't passed to fio, abort.
 531          */
 532         total_size = 0;
 533         for_each_file(td, f, i) {
 534                 if (f->real_file_size == -1ULL)
 535                         total_size = -1ULL;
 536                 else
 537                         total_size += f->real_file_size;
 538         }
 539
 540         /*
 541          * device/file sizes are zero and no size given, punt
 542          */
 543         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 544             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 545                 log_err("%s: you need to specify size=\n", td->o.name);
 546                 td_verror(td, EINVAL, "total_file_size");
 547                 return 1;
 548         }
 549
 550         /*
 551          * now file sizes are known, so we can set ->io_size. if size= is
 552          * not given, ->io_size is just equal to ->real_file_size. if size
 553          * is given, ->io_size is size / nr_files.
 554          */
 555         extend_size = total_size = 0;
 556         need_extend = 0;
 557         for_each_file(td, f, i) {
 558                 f->file_offset = td->o.start_offset;
 559
 560                 if (!td->o.file_size_low) {
 561                         /*
 562                          * no file size range given, file size is equal to
 563                          * total size divided by number of files. if that is
 564                          * zero, set it to the real file size.
 565                          */
 566                         f->io_size = td->o.size / td->o.nr_files;
 567                         if (!f->io_size)
 568                                 f->io_size = f->real_file_size - f->file_offset;
 569                 } else if (f->real_file_size < td->o.file_size_low ||
 570                            f->real_file_size > td->o.file_size_high) {
 571                         if (f->file_offset > td->o.file_size_low)
 572                                 goto err_offset;
 573                         /*
 574                          * file size given. if it's fixed, use that. if it's a
 575                          * range, generate a random size in-between.
 576                          */
 577                         if (td->o.file_size_low == td->o.file_size_high) {
 578                                 f->io_size = td->o.file_size_low
 579                                                 - f->file_offset;
 580                         } else {
 581                                 f->io_size = get_rand_file_size(td)
 582                                                 - f->file_offset;
 583                         }
 584                 } else
 585                         f->io_size = f->real_file_size - f->file_offset;
 586
 587                 if (f->io_size == -1ULL)
 588                         total_size = -1ULL;
 589                 else
 590                         total_size += f->io_size;
 591
 592                 if (f->filetype == FIO_TYPE_FILE &&
 593                     (f->io_size + f->file_offset) > f->real_file_size &&
 594                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 595                         if (!td->o.create_on_open) {
 596                                 need_extend++;
 597                                 extend_size += (f->io_size + f->file_offset);
 598                         } else
 599                                 f->real_file_size = f->io_size + f->file_offset;
 600                         fio_file_set_extend(f);
 601                 }
 602         }
 603
 604         if (!td->o.size || td->o.size > total_size)
 605                 td->o.size = total_size;
 606
 607         /*
 608          * See if we need to extend some files
 609          */
 610         if (need_extend) {
 611                 temp_stall_ts = 1;
 612                 if (!terse_output)
 613                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 614                                  " %LuMB)\n", td->o.name, need_extend,
 615                                         extend_size >> 20);
 616
 617                 for_each_file(td, f, i) {
 618                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 619
 620                         if (!fio_file_extend(f))
 621                                 continue;
 622
 623                         assert(f->filetype == FIO_TYPE_FILE);
 624                         fio_file_clear_extend(f);
 625                         if (!td->o.fill_device) {
 626                                 old_len = f->real_file_size;
 627                                 extend_len = f->io_size + f->file_offset - old_len;
 628                         }
 629                         f->real_file_size = (f->io_size + f->file_offset);
 630                         err = extend_file(td, f);
 631                         if (err)
 632                                 break;
 633
 634                         err = __file_invalidate_cache(td, f, old_len,
 635                                                                 extend_len);
 636                         close(f->fd);
 637                         f->fd = -1;
 638                         if (err)
 639                                 break;
 640                 }
 641                 temp_stall_ts = 0;
 642         }
 643
 644         if (err)
 645                 return err;
 646
 647         if (!td->o.zone_size)
 648                 td->o.zone_size = td->o.size;
 649
 650         /*
 651          * iolog already set the total io size, if we read back
 652          * stored entries.
 653          */
 654         if (!td->o.read_iolog_file)
 655                 td->total_io_size = td->o.size * td->o.loops;
 656         return 0;
 657 err_offset:
 658         log_err("%s: you need to specify valid offset=\n", td->o.name);
 659         return 1;
 660 }
 661
 662 int pre_read_files(struct thread_data *td)
 663 {
 664         struct fio_file *f;
 665         unsigned int i;
 666
 667         dprint(FD_FILE, "pre_read files\n");
 668
 669         for_each_file(td, f, i) {
 670                 pre_read_file(td, f);
 671         }
 672
 673         return 1;
 674 }
 675
 676 int init_random_map(struct thread_data *td)
 677 {
 678         unsigned long long blocks, num_maps;
 679         struct fio_file *f;
 680         unsigned int i;
 681
 682         if (td->o.norandommap || !td_random(td))
 683                 return 0;
 684
 685         for_each_file(td, f, i) {
 686                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
 687                                 (unsigned long long) td->o.rw_min_bs;
 688                 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
 689                                 (unsigned long long) BLOCKS_PER_MAP;
 690                 f->file_map = smalloc(num_maps * sizeof(int));
 691                 if (f->file_map) {
 692                         f->num_maps = num_maps;
 693                         continue;
 694                 }
 695                 if (!td->o.softrandommap) {
 696                         log_err("fio: failed allocating random map. If running"
 697                                 " a large number of jobs, try the 'norandommap'"
 698                                 " option or set 'softrandommap'. Or give"
 699                                 " a larger --alloc-size to fio.\n");
 700                         return 1;
 701                 }
 702
 703                 log_info("fio: file %s failed allocating random map. Running "
 704                          "job without.\n", f->file_name);
 705                 f->num_maps = 0;
 706         }
 707
 708         return 0;
 709 }
 710
 711 void close_files(struct thread_data *td)
 712 {
 713         struct fio_file *f;
 714         unsigned int i;
 715
 716         for_each_file(td, f, i) {
 717                 if (fio_file_open(f))
 718                         td_io_close_file(td, f);
 719         }
 720 }
 721
 722 void close_and_free_files(struct thread_data *td)
 723 {
 724         struct fio_file *f;
 725         unsigned int i;
 726
 727         dprint(FD_FILE, "close files\n");
 728
 729         for_each_file(td, f, i) {
 730                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
 731                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
 732                         unlink(f->file_name);
 733                 }
 734
 735                 if (fio_file_open(f))
 736                         td_io_close_file(td, f);
 737
 738                 remove_file_hash(f);
 739
 740                 sfree(f->file_name);
 741                 f->file_name = NULL;
 742
 743                 if (f->file_map) {
 744                         sfree(f->file_map);
 745                         f->file_map = NULL;
 746                 }
 747                 sfree(f);
 748         }
 749
 750         td->o.filename = NULL;
 751         free(td->files);
 752         td->files_index = 0;
 753         td->files = NULL;
 754         td->o.nr_files = 0;
 755 }
 756
 757 static void get_file_type(struct fio_file *f)
 758 {
 759         struct stat sb;
 760
 761         if (!strcmp(f->file_name, "-"))
 762                 f->filetype = FIO_TYPE_PIPE;
 763         else
 764                 f->filetype = FIO_TYPE_FILE;
 765
 766         if (!lstat(f->file_name, &sb)) {
 767                 if (S_ISBLK(sb.st_mode))
 768                         f->filetype = FIO_TYPE_BD;
 769                 else if (S_ISCHR(sb.st_mode))
 770                         f->filetype = FIO_TYPE_CHAR;
 771                 else if (S_ISFIFO(sb.st_mode))
 772                         f->filetype = FIO_TYPE_PIPE;
 773         }
 774 }
 775
 776 int add_file(struct thread_data *td, const char *fname)
 777 {
 778         int cur_files = td->files_index;
 779         char file_name[PATH_MAX];
 780         struct fio_file *f;
 781         int len = 0;
 782
 783         dprint(FD_FILE, "add file %s\n", fname);
 784
 785         f = smalloc(sizeof(*f));
 786         if (!f) {
 787                 log_err("fio: smalloc OOM\n");
 788                 assert(0);
 789         }
 790
 791         f->fd = -1;
 792
 793         if (td->files_size <= td->files_index) {
 794                 int new_size = td->o.nr_files + 1;
 795
 796                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
 797
 798                 td->files = realloc(td->files, new_size * sizeof(f));
 799                 td->files_size = new_size;
 800         }
 801         td->files[cur_files] = f;
 802
 803         /*
 804          * init function, io engine may not be loaded yet
 805          */
 806         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 807                 f->real_file_size = -1ULL;
 808
 809         if (td->o.directory)
 810                 len = sprintf(file_name, "%s/", td->o.directory);
 811
 812         sprintf(file_name + len, "%s", fname);
 813         f->file_name = smalloc_strdup(file_name);
 814         if (!f->file_name) {
 815                 log_err("fio: smalloc OOM\n");
 816                 assert(0);
 817         }
 818
 819         get_file_type(f);
 820
 821         switch (td->o.file_lock_mode) {
 822         case FILE_LOCK_NONE:
 823                 break;
 824         case FILE_LOCK_READWRITE:
 825                 f->lock = fio_mutex_rw_init();
 826                 break;
 827         case FILE_LOCK_EXCLUSIVE:
 828                 f->lock = fio_mutex_init(1);
 829                 break;
 830         default:
 831                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 832                 assert(0);
 833         }
 834
 835         td->files_index++;
 836         if (f->filetype == FIO_TYPE_FILE)
 837                 td->nr_normal_files++;
 838
 839         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
 840                                                         cur_files);
 841
 842         return cur_files;
 843 }
 844
 845 void get_file(struct fio_file *f)
 846 {
 847         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 848         assert(fio_file_open(f));
 849         f->references++;
 850 }
 851
 852 int put_file(struct thread_data *td, struct fio_file *f)
 853 {
 854         int f_ret = 0, ret = 0;
 855
 856         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 857
 858         if (!fio_file_open(f)) {
 859                 assert(f->fd == -1);
 860                 return 0;
 861         }
 862
 863         assert(f->references);
 864         if (--f->references)
 865                 return 0;
 866
 867         if (should_fsync(td) && td->o.fsync_on_close)
 868                 f_ret = fsync(f->fd);
 869
 870         if (td->io_ops->close_file)
 871                 ret = td->io_ops->close_file(td, f);
 872
 873         if (!ret)
 874                 ret = f_ret;
 875
 876         td->nr_open_files--;
 877         fio_file_clear_open(f);
 878         assert(f->fd == -1);
 879         return ret;
 880 }
 881
 882 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 883 {
 884         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 885                 return;
 886
 887         if (f->lock_owner == td && f->lock_batch--)
 888                 return;
 889
 890         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 891                 if (ddir == DDIR_READ)
 892                         fio_mutex_down_read(f->lock);
 893                 else
 894                         fio_mutex_down_write(f->lock);
 895         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 896                 fio_mutex_down(f->lock);
 897
 898         f->lock_owner = td;
 899         f->lock_batch = td->o.lockfile_batch;
 900         f->lock_ddir = ddir;
 901 }
 902
 903 void unlock_file(struct thread_data *td, struct fio_file *f)
 904 {
 905         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 906                 return;
 907         if (f->lock_batch)
 908                 return;
 909
 910         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 911                 const int is_read = f->lock_ddir == DDIR_READ;
 912                 int val = fio_mutex_getval(f->lock);
 913
 914                 if ((is_read && val == 1) || (!is_read && val == -1))
 915                         f->lock_owner = NULL;
 916
 917                 if (is_read)
 918                         fio_mutex_up_read(f->lock);
 919                 else
 920                         fio_mutex_up_write(f->lock);
 921         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 922                 int val = fio_mutex_getval(f->lock);
 923
 924                 if (val == 0)
 925                         f->lock_owner = NULL;
 926
 927                 fio_mutex_up(f->lock);
 928         }
 929 }
 930
 931 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 932 {
 933         if (f->lock_owner != td)
 934                 return;
 935
 936         f->lock_batch = 0;
 937         unlock_file(td, f);
 938 }
 939
 940 static int recurse_dir(struct thread_data *td, const char *dirname)
 941 {
 942         struct dirent *dir;
 943         int ret = 0;
 944         DIR *D;
 945
 946         D = opendir(dirname);
 947         if (!D) {
 948                 char buf[FIO_VERROR_SIZE];
 949
 950                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 951                 td_verror(td, errno, buf);
 952                 return 1;
 953         }
 954
 955         while ((dir = readdir(D)) != NULL) {
 956                 char full_path[PATH_MAX];
 957                 struct stat sb;
 958
 959                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 960                         continue;
 961
 962                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 963
 964                 if (lstat(full_path, &sb) == -1) {
 965                         if (errno != ENOENT) {
 966                                 td_verror(td, errno, "stat");
 967                                 return 1;
 968                         }
 969                 }
 970
 971                 if (S_ISREG(sb.st_mode)) {
 972                         add_file(td, full_path);
 973                         td->o.nr_files++;
 974                         continue;
 975                 }
 976                 if (!S_ISDIR(sb.st_mode))
 977                         continue;
 978
 979                 ret = recurse_dir(td, full_path);
 980                 if (ret)
 981                         break;
 982         }
 983
 984         closedir(D);
 985         return ret;
 986 }
 987
 988 int add_dir_files(struct thread_data *td, const char *path)
 989 {
 990         int ret = recurse_dir(td, path);
 991
 992         if (!ret)
 993                 log_info("fio: opendir added %d files\n", td->o.nr_files);
 994
 995         return ret;
 996 }
 997
 998 void dup_files(struct thread_data *td, struct thread_data *org)
 999 {
1000         struct fio_file *f;
1001         unsigned int i;
1002
1003         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1004
1005         if (!org->files)
1006                 return;
1007
1008         td->files = malloc(org->files_index * sizeof(f));
1009
1010         for_each_file(org, f, i) {
1011                 struct fio_file *__f;
1012
1013                 __f = smalloc(sizeof(*__f));
1014                 if (!__f) {
1015                         log_err("fio: smalloc OOM\n");
1016                         assert(0);
1017                 }
1018                 __f->fd = -1;
1019
1020                 if (f->file_name) {
1021                         __f->file_name = smalloc_strdup(f->file_name);
1022                         if (!__f->file_name) {
1023                                 log_err("fio: smalloc OOM\n");
1024                                 assert(0);
1025                         }
1026
1027                         __f->filetype = f->filetype;
1028                 }
1029
1030                 td->files[i] = __f;
1031         }
1032 }
1033
1034 /*
1035  * Returns the index that matches the filename, or -1 if not there
1036  */
1037 int get_fileno(struct thread_data *td, const char *fname)
1038 {
1039         struct fio_file *f;
1040         unsigned int i;
1041
1042         for_each_file(td, f, i)
1043                 if (!strcmp(f->file_name, fname))
1044                         return i;
1045
1046         return -1;
1047 }
1048
1049 /*
1050  * For log usage, where we add/open/close files automatically
1051  */
1052 void free_release_files(struct thread_data *td)
1053 {
1054         close_files(td);
1055         td->files_index = 0;
1056         td->nr_normal_files = 0;
1057 }