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