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 #ifdef FIO_HAVE_FALLOCATE
  68         if (td->o.fallocate && !td->o.fill_device) {
  69                 dprint(FD_FILE, "fallocate file %s size %llu\n", f->file_name,
  70                                                         f->real_file_size);
  71
  72                 r = posix_fallocate(f->fd, 0, f->real_file_size);
  73                 if (r < 0) {
  74                         log_err("fio: posix_fallocate fails: %s\n",
  75                                         strerror(-r));
  76                 }
  77         }
  78 #endif
  79
  80         if (!new_layout)
  81                 goto done;
  82
  83         /*
  84          * The size will be -1ULL when fill_device is used, so don't truncate
  85          * or fallocate this file, just write it
  86          */
  87         if (!td->o.fill_device) {
  88                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
  89                                                         f->real_file_size);
  90                 if (ftruncate(f->fd, f->real_file_size) == -1) {
  91                         td_verror(td, errno, "ftruncate");
  92                         goto err;
  93                 }
  94         }
  95
  96         b = malloc(td->o.max_bs[DDIR_WRITE]);
  97         memset(b, 0, td->o.max_bs[DDIR_WRITE]);
  98
  99         left = f->real_file_size;
 100         while (left && !td->terminate) {
 101                 bs = td->o.max_bs[DDIR_WRITE];
 102                 if (bs > left)
 103                         bs = left;
 104
 105                 r = write(f->fd, b, bs);
 106
 107                 if (r > 0) {
 108                         left -= r;
 109                         continue;
 110                 } else {
 111                         if (r < 0) {
 112                                 int __e = errno;
 113
 114                                 if (__e == ENOSPC) {
 115                                         if (td->o.fill_device)
 116                                                 break;
 117                                         log_info("fio: ENOSPC on laying out "
 118                                                  "file, stopping\n");
 119                                         break;
 120                                 }
 121                                 td_verror(td, errno, "write");
 122                         } else
 123                                 td_verror(td, EIO, "write");
 124
 125                         break;
 126                 }
 127         }
 128
 129         if (td->terminate) {
 130                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 131                 unlink(f->file_name);
 132         } else if (td->o.create_fsync) {
 133                 if (fsync(f->fd) < 0) {
 134                         td_verror(td, errno, "fsync");
 135                         goto err;
 136                 }
 137         }
 138         if (td->o.fill_device && !td_write(td)) {
 139                 fio_file_clear_size_known(f);
 140                 if (td_io_get_file_size(td, f))
 141                         goto err;
 142                 if (f->io_size > f->real_file_size)
 143                         f->io_size = f->real_file_size;
 144         }
 145
 146         free(b);
 147 done:
 148         return 0;
 149 err:
 150         close(f->fd);
 151         f->fd = -1;
 152         return 1;
 153 }
 154
 155 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 156 {
 157         int r, did_open = 0, old_runstate;
 158         unsigned long long left;
 159         unsigned int bs;
 160         char *b;
 161
 162         if (td->io_ops->flags & FIO_PIPEIO)
 163                 return 0;
 164
 165         if (!fio_file_open(f)) {
 166                 if (td->io_ops->open_file(td, f)) {
 167                         log_err("fio: cannot pre-read, failed to open file\n");
 168                         return 1;
 169                 }
 170                 did_open = 1;
 171         }
 172
 173         old_runstate = td->runstate;
 174         td_set_runstate(td, TD_PRE_READING);
 175
 176         bs = td->o.max_bs[DDIR_READ];
 177         b = malloc(bs);
 178         memset(b, 0, bs);
 179
 180         lseek(f->fd, f->file_offset, SEEK_SET);
 181         left = f->io_size;
 182
 183         while (left && !td->terminate) {
 184                 if (bs > left)
 185                         bs = left;
 186
 187                 r = read(f->fd, b, bs);
 188
 189                 if (r == (int) bs) {
 190                         left -= bs;
 191                         continue;
 192                 } else {
 193                         td_verror(td, EIO, "pre_read");
 194                         break;
 195                 }
 196         }
 197
 198         td_set_runstate(td, old_runstate);
 199
 200         if (did_open)
 201                 td->io_ops->close_file(td, f);
 202         free(b);
 203         return 0;
 204 }
 205
 206 static unsigned long long get_rand_file_size(struct thread_data *td)
 207 {
 208         unsigned long long ret, sized;
 209         long r;
 210
 211         r = os_random_long(&td->file_size_state);
 212         sized = td->o.file_size_high - td->o.file_size_low;
 213         ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
 214         ret += td->o.file_size_low;
 215         ret -= (ret % td->o.rw_min_bs);
 216         return ret;
 217 }
 218
 219 static int file_size(struct thread_data *td, struct fio_file *f)
 220 {
 221         struct stat st;
 222
 223         if (stat(f->file_name, &st) == -1) {
 224                 td_verror(td, errno, "fstat");
 225                 return 1;
 226         }
 227
 228         f->real_file_size = st.st_size;
 229         return 0;
 230 }
 231
 232 static int bdev_size(struct thread_data *td, struct fio_file *f)
 233 {
 234         unsigned long long bytes;
 235         int r;
 236
 237         if (td->io_ops->open_file(td, f)) {
 238                 log_err("fio: failed opening blockdev %s for size check\n",
 239                         f->file_name);
 240                 return 1;
 241         }
 242
 243         r = blockdev_size(f->fd, &bytes);
 244         if (r) {
 245                 td_verror(td, r, "blockdev_size");
 246                 goto err;
 247         }
 248
 249         if (!bytes) {
 250                 log_err("%s: zero sized block device?\n", f->file_name);
 251                 goto err;
 252         }
 253
 254         f->real_file_size = bytes;
 255         td->io_ops->close_file(td, f);
 256         return 0;
 257 err:
 258         td->io_ops->close_file(td, f);
 259         return 1;
 260 }
 261
 262 static int get_file_size(struct thread_data *td, struct fio_file *f)
 263 {
 264         int ret = 0;
 265
 266         if (fio_file_size_known(f))
 267                 return 0;
 268
 269         if (f->filetype == FIO_TYPE_FILE)
 270                 ret = file_size(td, f);
 271         else if (f->filetype == FIO_TYPE_BD)
 272                 ret = bdev_size(td, f);
 273         else
 274                 f->real_file_size = -1;
 275
 276         if (ret)
 277                 return ret;
 278
 279         if (f->file_offset > f->real_file_size) {
 280                 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
 281                                         f->file_offset, f->real_file_size);
 282                 return 1;
 283         }
 284
 285         fio_file_set_size_known(f);
 286         return 0;
 287 }
 288
 289 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 290                                    unsigned long long off,
 291                                    unsigned long long len)
 292 {
 293         int ret = 0;
 294
 295         if (len == -1ULL)
 296                 len = f->io_size;
 297         if (off == -1ULL)
 298                 off = f->file_offset;
 299
 300         if (len == -1ULL || off == -1ULL)
 301                 return 0;
 302
 303         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 304                                                                 len);
 305
 306         /*
 307          * FIXME: add blockdev flushing too
 308          */
 309         if (f->mmap_ptr) {
 310                 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
 311 #ifdef FIO_MADV_FREE
 312                 (void) madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
 313 #endif
 314         } else if (f->filetype == FIO_TYPE_FILE) {
 315                 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 316         } else if (f->filetype == FIO_TYPE_BD) {
 317                 ret = blockdev_invalidate_cache(f->fd);
 318                 if (ret < 0 && errno == EACCES && geteuid()) {
 319                         if (!root_warn) {
 320                                 log_err("fio: only root may flush block "
 321                                         "devices. Cache flush bypassed!\n");
 322                                 root_warn = 1;
 323                         }
 324                         ret = 0;
 325                 }
 326         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 327                 ret = 0;
 328
 329         if (ret < 0) {
 330                 td_verror(td, errno, "invalidate_cache");
 331                 return 1;
 332         } else if (ret > 0) {
 333                 td_verror(td, ret, "invalidate_cache");
 334                 return 1;
 335         }
 336
 337         return ret;
 338
 339 }
 340
 341 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 342 {
 343         if (!fio_file_open(f))
 344                 return 0;
 345
 346         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 347 }
 348
 349 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 350 {
 351         int ret = 0;
 352
 353         dprint(FD_FILE, "fd close %s\n", f->file_name);
 354
 355         remove_file_hash(f);
 356
 357         if (close(f->fd) < 0)
 358                 ret = errno;
 359
 360         f->fd = -1;
 361         return ret;
 362 }
 363
 364 static int file_lookup_open(struct fio_file *f, int flags)
 365 {
 366         struct fio_file *__f;
 367         int from_hash;
 368
 369         __f = lookup_file_hash(f->file_name);
 370         if (__f) {
 371                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 372                 /*
 373                  * racy, need the __f->lock locked
 374                  */
 375                 f->lock = __f->lock;
 376                 f->lock_owner = __f->lock_owner;
 377                 f->lock_batch = __f->lock_batch;
 378                 f->lock_ddir = __f->lock_ddir;
 379                 from_hash = 1;
 380         } else {
 381                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 382                 from_hash = 0;
 383         }
 384
 385         f->fd = open(f->file_name, flags, 0600);
 386         return from_hash;
 387 }
 388
 389 int generic_open_file(struct thread_data *td, struct fio_file *f)
 390 {
 391         int is_std = 0;
 392         int flags = 0;
 393         int from_hash = 0;
 394
 395         dprint(FD_FILE, "fd open %s\n", f->file_name);
 396
 397         if (!strcmp(f->file_name, "-")) {
 398                 if (td_rw(td)) {
 399                         log_err("fio: can't read/write to stdin/out\n");
 400                         return 1;
 401                 }
 402                 is_std = 1;
 403
 404                 /*
 405                  * move output logging to stderr, if we are writing to stdout
 406                  */
 407                 if (td_write(td))
 408                         f_out = stderr;
 409         }
 410
 411         if (td->o.odirect)
 412                 flags |= OS_O_DIRECT;
 413         if (td->o.sync_io)
 414                 flags |= O_SYNC;
 415         if (f->filetype != FIO_TYPE_FILE)
 416                 flags |= FIO_O_NOATIME;
 417         if (td->o.create_on_open)
 418                 flags |= O_CREAT;
 419
 420 open_again:
 421         if (td_write(td)) {
 422                 if (!read_only)
 423                         flags |= O_RDWR;
 424
 425                 if (f->filetype == FIO_TYPE_FILE)
 426                         flags |= O_CREAT;
 427
 428                 if (is_std)
 429                         f->fd = dup(STDOUT_FILENO);
 430                 else
 431                         from_hash = file_lookup_open(f, flags);
 432         } else {
 433                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 434                         flags |= O_RDWR;
 435                 else
 436                         flags |= O_RDONLY;
 437
 438                 if (is_std)
 439                         f->fd = dup(STDIN_FILENO);
 440                 else
 441                         from_hash = file_lookup_open(f, flags);
 442         }
 443
 444         if (f->fd == -1) {
 445                 char buf[FIO_VERROR_SIZE];
 446                 int __e = errno;
 447
 448                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 449                         flags &= ~FIO_O_NOATIME;
 450                         goto open_again;
 451                 }
 452
 453                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 454
 455                 td_verror(td, __e, buf);
 456         }
 457
 458         if (!from_hash && f->fd != -1) {
 459                 if (add_file_hash(f)) {
 460                         int ret;
 461
 462                         /*
 463                          * OK to ignore, we haven't done anything with it
 464                          */
 465                         ret = generic_close_file(td, f);
 466                         goto open_again;
 467                 }
 468         }
 469
 470         return 0;
 471 }
 472
 473 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 474 {
 475         return get_file_size(td, f);
 476 }
 477
 478 /*
 479  * open/close all files, so that ->real_file_size gets set
 480  */
 481 static int get_file_sizes(struct thread_data *td)
 482 {
 483         struct fio_file *f;
 484         unsigned int i;
 485         int err = 0;
 486
 487         for_each_file(td, f, i) {
 488                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 489                                                                 f->file_name);
 490
 491                 if (td_io_get_file_size(td, f)) {
 492                         if (td->error != ENOENT) {
 493                                 log_err("%s\n", td->verror);
 494                                 err = 1;
 495                         }
 496                         clear_error(td);
 497                 }
 498
 499                 if (f->real_file_size == -1ULL && td->o.size)
 500                         f->real_file_size = td->o.size / td->o.nr_files;
 501         }
 502
 503         return err;
 504 }
 505
 506 /*
 507  * Open the files and setup files sizes, creating files if necessary.
 508  */
 509 int setup_files(struct thread_data *td)
 510 {
 511         unsigned long long total_size, extend_size;
 512         struct fio_file *f;
 513         unsigned int i;
 514         int err = 0, need_extend;
 515
 516         dprint(FD_FILE, "setup files\n");
 517
 518         if (td->o.read_iolog_file)
 519                 return 0;
 520
 521         /*
 522          * if ioengine defines a setup() method, it's responsible for
 523          * opening the files and setting f->real_file_size to indicate
 524          * the valid range for that file.
 525          */
 526         if (td->io_ops->setup)
 527                 err = td->io_ops->setup(td);
 528         else
 529                 err = get_file_sizes(td);
 530
 531         if (err)
 532                 return err;
 533
 534         /*
 535          * check sizes. if the files/devices do not exist and the size
 536          * isn't passed to fio, abort.
 537          */
 538         total_size = 0;
 539         for_each_file(td, f, i) {
 540                 if (f->real_file_size == -1ULL)
 541                         total_size = -1ULL;
 542                 else
 543                         total_size += f->real_file_size;
 544         }
 545
 546         /*
 547          * device/file sizes are zero and no size given, punt
 548          */
 549         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 550             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 551                 log_err("%s: you need to specify size=\n", td->o.name);
 552                 td_verror(td, EINVAL, "total_file_size");
 553                 return 1;
 554         }
 555
 556         /*
 557          * now file sizes are known, so we can set ->io_size. if size= is
 558          * not given, ->io_size is just equal to ->real_file_size. if size
 559          * is given, ->io_size is size / nr_files.
 560          */
 561         extend_size = total_size = 0;
 562         need_extend = 0;
 563         for_each_file(td, f, i) {
 564                 f->file_offset = td->o.start_offset;
 565
 566                 if (!td->o.file_size_low) {
 567                         /*
 568                          * no file size range given, file size is equal to
 569                          * total size divided by number of files. if that is
 570                          * zero, set it to the real file size.
 571                          */
 572                         f->io_size = td->o.size / td->o.nr_files;
 573                         if (!f->io_size)
 574                                 f->io_size = f->real_file_size - f->file_offset;
 575                 } else if (f->real_file_size < td->o.file_size_low ||
 576                            f->real_file_size > td->o.file_size_high) {
 577                         if (f->file_offset > td->o.file_size_low)
 578                                 goto err_offset;
 579                         /*
 580                          * file size given. if it's fixed, use that. if it's a
 581                          * range, generate a random size in-between.
 582                          */
 583                         if (td->o.file_size_low == td->o.file_size_high) {
 584                                 f->io_size = td->o.file_size_low
 585                                                 - f->file_offset;
 586                         } else {
 587                                 f->io_size = get_rand_file_size(td)
 588                                                 - f->file_offset;
 589                         }
 590                 } else
 591                         f->io_size = f->real_file_size - f->file_offset;
 592
 593                 if (f->io_size == -1ULL)
 594                         total_size = -1ULL;
 595                 else
 596                         total_size += f->io_size;
 597
 598                 if (f->filetype == FIO_TYPE_FILE &&
 599                     (f->io_size + f->file_offset) > f->real_file_size &&
 600                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 601                         if (!td->o.create_on_open) {
 602                                 need_extend++;
 603                                 extend_size += (f->io_size + f->file_offset);
 604                         } else
 605                                 f->real_file_size = f->io_size + f->file_offset;
 606                         fio_file_set_extend(f);
 607                 }
 608         }
 609
 610         if (!td->o.size || td->o.size > total_size)
 611                 td->o.size = total_size;
 612
 613         /*
 614          * See if we need to extend some files
 615          */
 616         if (need_extend) {
 617                 temp_stall_ts = 1;
 618                 if (!terse_output)
 619                         log_info("%s: Laying out IO file(s) (%u file(s) /"
 620                                  " %LuMB)\n", td->o.name, need_extend,
 621                                         extend_size >> 20);
 622
 623                 for_each_file(td, f, i) {
 624                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
 625
 626                         if (!fio_file_extend(f))
 627                                 continue;
 628
 629                         assert(f->filetype == FIO_TYPE_FILE);
 630                         fio_file_clear_extend(f);
 631                         if (!td->o.fill_device) {
 632                                 old_len = f->real_file_size;
 633                                 extend_len = f->io_size + f->file_offset -
 634                                                 old_len;
 635                         }
 636                         f->real_file_size = (f->io_size + f->file_offset);
 637                         err = extend_file(td, f);
 638                         if (err)
 639                                 break;
 640
 641                         err = __file_invalidate_cache(td, f, old_len,
 642                                                                 extend_len);
 643                         close(f->fd);
 644                         f->fd = -1;
 645                         if (err)
 646                                 break;
 647                 }
 648                 temp_stall_ts = 0;
 649         }
 650
 651         if (err)
 652                 return err;
 653
 654         if (!td->o.zone_size)
 655                 td->o.zone_size = td->o.size;
 656
 657         /*
 658          * iolog already set the total io size, if we read back
 659          * stored entries.
 660          */
 661         if (!td->o.read_iolog_file)
 662                 td->total_io_size = td->o.size * td->o.loops;
 663         return 0;
 664 err_offset:
 665         log_err("%s: you need to specify valid offset=\n", td->o.name);
 666         return 1;
 667 }
 668
 669 int pre_read_files(struct thread_data *td)
 670 {
 671         struct fio_file *f;
 672         unsigned int i;
 673
 674         dprint(FD_FILE, "pre_read files\n");
 675
 676         for_each_file(td, f, i) {
 677                 pre_read_file(td, f);
 678         }
 679
 680         return 1;
 681 }
 682
 683 int init_random_map(struct thread_data *td)
 684 {
 685         unsigned long long blocks, num_maps;
 686         struct fio_file *f;
 687         unsigned int i;
 688
 689         if (td->o.norandommap || !td_random(td))
 690                 return 0;
 691
 692         for_each_file(td, f, i) {
 693                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
 694                                 (unsigned long long) td->o.rw_min_bs;
 695                 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
 696                                 (unsigned long long) BLOCKS_PER_MAP;
 697                 f->file_map = smalloc(num_maps * sizeof(int));
 698                 if (f->file_map) {
 699                         f->num_maps = num_maps;
 700                         continue;
 701                 }
 702                 if (!td->o.softrandommap) {
 703                         log_err("fio: failed allocating random map. If running"
 704                                 " a large number of jobs, try the 'norandommap'"
 705                                 " option or set 'softrandommap'. Or give"
 706                                 " a larger --alloc-size to fio.\n");
 707                         return 1;
 708                 }
 709
 710                 log_info("fio: file %s failed allocating random map. Running "
 711                          "job without.\n", f->file_name);
 712                 f->num_maps = 0;
 713         }
 714
 715         return 0;
 716 }
 717
 718 void close_files(struct thread_data *td)
 719 {
 720         struct fio_file *f;
 721         unsigned int i;
 722
 723         for_each_file(td, f, i) {
 724                 if (fio_file_open(f))
 725                         td_io_close_file(td, f);
 726         }
 727 }
 728
 729 void close_and_free_files(struct thread_data *td)
 730 {
 731         struct fio_file *f;
 732         unsigned int i;
 733
 734         dprint(FD_FILE, "close files\n");
 735
 736         for_each_file(td, f, i) {
 737                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
 738                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
 739                         unlink(f->file_name);
 740                 }
 741
 742                 if (fio_file_open(f))
 743                         td_io_close_file(td, f);
 744
 745                 remove_file_hash(f);
 746
 747                 sfree(f->file_name);
 748                 f->file_name = NULL;
 749
 750                 if (f->file_map) {
 751                         sfree(f->file_map);
 752                         f->file_map = NULL;
 753                 }
 754                 sfree(f);
 755         }
 756
 757         td->o.filename = NULL;
 758         free(td->files);
 759         td->files_index = 0;
 760         td->files = NULL;
 761         td->o.nr_files = 0;
 762 }
 763
 764 static void get_file_type(struct fio_file *f)
 765 {
 766         struct stat sb;
 767
 768         if (!strcmp(f->file_name, "-"))
 769                 f->filetype = FIO_TYPE_PIPE;
 770         else
 771                 f->filetype = FIO_TYPE_FILE;
 772
 773         if (!stat(f->file_name, &sb)) {
 774                 if (S_ISBLK(sb.st_mode))
 775                         f->filetype = FIO_TYPE_BD;
 776                 else if (S_ISCHR(sb.st_mode))
 777                         f->filetype = FIO_TYPE_CHAR;
 778                 else if (S_ISFIFO(sb.st_mode))
 779                         f->filetype = FIO_TYPE_PIPE;
 780         }
 781 }
 782
 783 int add_file(struct thread_data *td, const char *fname)
 784 {
 785         int cur_files = td->files_index;
 786         char file_name[PATH_MAX];
 787         struct fio_file *f;
 788         int len = 0;
 789
 790         dprint(FD_FILE, "add file %s\n", fname);
 791
 792         f = smalloc(sizeof(*f));
 793         if (!f) {
 794                 log_err("fio: smalloc OOM\n");
 795                 assert(0);
 796         }
 797
 798         f->fd = -1;
 799
 800         if (td->files_size <= td->files_index) {
 801                 int new_size = td->o.nr_files + 1;
 802
 803                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
 804
 805                 td->files = realloc(td->files, new_size * sizeof(f));
 806                 td->files_size = new_size;
 807         }
 808         td->files[cur_files] = f;
 809
 810         /*
 811          * init function, io engine may not be loaded yet
 812          */
 813         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 814                 f->real_file_size = -1ULL;
 815
 816         if (td->o.directory)
 817                 len = sprintf(file_name, "%s/", td->o.directory);
 818
 819         sprintf(file_name + len, "%s", fname);
 820         f->file_name = smalloc_strdup(file_name);
 821         if (!f->file_name) {
 822                 log_err("fio: smalloc OOM\n");
 823                 assert(0);
 824         }
 825
 826         get_file_type(f);
 827
 828         switch (td->o.file_lock_mode) {
 829         case FILE_LOCK_NONE:
 830                 break;
 831         case FILE_LOCK_READWRITE:
 832                 f->lock = fio_mutex_rw_init();
 833                 break;
 834         case FILE_LOCK_EXCLUSIVE:
 835                 f->lock = fio_mutex_init(1);
 836                 break;
 837         default:
 838                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 839                 assert(0);
 840         }
 841
 842         td->files_index++;
 843         if (f->filetype == FIO_TYPE_FILE)
 844                 td->nr_normal_files++;
 845
 846         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
 847                                                         cur_files);
 848
 849         return cur_files;
 850 }
 851
 852 void get_file(struct fio_file *f)
 853 {
 854         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 855         assert(fio_file_open(f));
 856         f->references++;
 857 }
 858
 859 int put_file(struct thread_data *td, struct fio_file *f)
 860 {
 861         int f_ret = 0, ret = 0;
 862
 863         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 864
 865         if (!fio_file_open(f)) {
 866                 assert(f->fd == -1);
 867                 return 0;
 868         }
 869
 870         assert(f->references);
 871         if (--f->references)
 872                 return 0;
 873
 874         if (should_fsync(td) && td->o.fsync_on_close)
 875                 f_ret = fsync(f->fd);
 876
 877         if (td->io_ops->close_file)
 878                 ret = td->io_ops->close_file(td, f);
 879
 880         if (!ret)
 881                 ret = f_ret;
 882
 883         td->nr_open_files--;
 884         fio_file_clear_open(f);
 885         assert(f->fd == -1);
 886         return ret;
 887 }
 888
 889 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 890 {
 891         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 892                 return;
 893
 894         if (f->lock_owner == td && f->lock_batch--)
 895                 return;
 896
 897         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 898                 if (ddir == DDIR_READ)
 899                         fio_mutex_down_read(f->lock);
 900                 else
 901                         fio_mutex_down_write(f->lock);
 902         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 903                 fio_mutex_down(f->lock);
 904
 905         f->lock_owner = td;
 906         f->lock_batch = td->o.lockfile_batch;
 907         f->lock_ddir = ddir;
 908 }
 909
 910 void unlock_file(struct thread_data *td, struct fio_file *f)
 911 {
 912         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 913                 return;
 914         if (f->lock_batch)
 915                 return;
 916
 917         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 918                 const int is_read = f->lock_ddir == DDIR_READ;
 919                 int val = fio_mutex_getval(f->lock);
 920
 921                 if ((is_read && val == 1) || (!is_read && val == -1))
 922                         f->lock_owner = NULL;
 923
 924                 if (is_read)
 925                         fio_mutex_up_read(f->lock);
 926                 else
 927                         fio_mutex_up_write(f->lock);
 928         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 929                 int val = fio_mutex_getval(f->lock);
 930
 931                 if (val == 0)
 932                         f->lock_owner = NULL;
 933
 934                 fio_mutex_up(f->lock);
 935         }
 936 }
 937
 938 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 939 {
 940         if (f->lock_owner != td)
 941                 return;
 942
 943         f->lock_batch = 0;
 944         unlock_file(td, f);
 945 }
 946
 947 static int recurse_dir(struct thread_data *td, const char *dirname)
 948 {
 949         struct dirent *dir;
 950         int ret = 0;
 951         DIR *D;
 952
 953         D = opendir(dirname);
 954         if (!D) {
 955                 char buf[FIO_VERROR_SIZE];
 956
 957                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 958                 td_verror(td, errno, buf);
 959                 return 1;
 960         }
 961
 962         while ((dir = readdir(D)) != NULL) {
 963                 char full_path[PATH_MAX];
 964                 struct stat sb;
 965
 966                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 967                         continue;
 968
 969                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 970
 971                 if (lstat(full_path, &sb) == -1) {
 972                         if (errno != ENOENT) {
 973                                 td_verror(td, errno, "stat");
 974                                 return 1;
 975                         }
 976                 }
 977
 978                 if (S_ISREG(sb.st_mode)) {
 979                         add_file(td, full_path);
 980                         td->o.nr_files++;
 981                         continue;
 982                 }
 983                 if (!S_ISDIR(sb.st_mode))
 984                         continue;
 985
 986                 ret = recurse_dir(td, full_path);
 987                 if (ret)
 988                         break;
 989         }
 990
 991         closedir(D);
 992         return ret;
 993 }
 994
 995 int add_dir_files(struct thread_data *td, const char *path)
 996 {
 997         int ret = recurse_dir(td, path);
 998
 999         if (!ret)
1000                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1001
1002         return ret;
1003 }
1004
1005 void dup_files(struct thread_data *td, struct thread_data *org)
1006 {
1007         struct fio_file *f;
1008         unsigned int i;
1009
1010         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1011
1012         if (!org->files)
1013                 return;
1014
1015         td->files = malloc(org->files_index * sizeof(f));
1016
1017         for_each_file(org, f, i) {
1018                 struct fio_file *__f;
1019
1020                 __f = smalloc(sizeof(*__f));
1021                 if (!__f) {
1022                         log_err("fio: smalloc OOM\n");
1023                         assert(0);
1024                 }
1025                 __f->fd = -1;
1026
1027                 if (f->file_name) {
1028                         __f->file_name = smalloc_strdup(f->file_name);
1029                         if (!__f->file_name) {
1030                                 log_err("fio: smalloc OOM\n");
1031                                 assert(0);
1032                         }
1033
1034                         __f->filetype = f->filetype;
1035                 }
1036
1037                 td->files[i] = __f;
1038         }
1039 }
1040
1041 /*
1042  * Returns the index that matches the filename, or -1 if not there
1043  */
1044 int get_fileno(struct thread_data *td, const char *fname)
1045 {
1046         struct fio_file *f;
1047         unsigned int i;
1048
1049         for_each_file(td, f, i)
1050                 if (!strcmp(f->file_name, fname))
1051                         return i;
1052
1053         return -1;
1054 }
1055
1056 /*
1057  * For log usage, where we add/open/close files automatically
1058  */
1059 void free_release_files(struct thread_data *td)
1060 {
1061         close_files(td);
1062         td->files_index = 0;
1063         td->nr_normal_files = 0;
1064 }