filesetup.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <string.h>
   4 #include <assert.h>
   5 #include <dirent.h>
   6 #include <libgen.h>
   7 #include <sys/stat.h>
   8 #include <sys/mman.h>
   9 #include <sys/types.h>
  10
  11 #include "fio.h"
  12 #include "smalloc.h"
  13 #include "filehash.h"
  14 #include "options.h"
  15 #include "os/os.h"
  16 #include "hash.h"
  17 #include "lib/axmap.h"
  18
  19 #ifdef CONFIG_LINUX_FALLOCATE
  20 #include <linux/falloc.h>
  21 #endif
  22
  23 static int root_warn;
  24
  25 static FLIST_HEAD(filename_list);
  26
  27 /*
  28  * List entry for filename_list
  29  */
  30 struct file_name {
  31         struct flist_head list;
  32         char *filename;
  33 };
  34
  35 static inline void clear_error(struct thread_data *td)
  36 {
  37         td->error = 0;
  38         td->verror[0] = '\0';
  39 }
  40
  41 /*
  42  * Leaves f->fd open on success, caller must close
  43  */
  44 static int extend_file(struct thread_data *td, struct fio_file *f)
  45 {
  46         int r, new_layout = 0, unlink_file = 0, flags;
  47         unsigned long long left;
  48         unsigned int bs;
  49         char *b = NULL;
  50
  51         if (read_only) {
  52                 log_err("fio: refusing extend of file due to read-only\n");
  53                 return 0;
  54         }
  55
  56         /*
  57          * check if we need to lay the file out complete again. fio
  58          * does that for operations involving reads, or for writes
  59          * where overwrite is set
  60          */
  61         if (td_read(td) ||
  62            (td_write(td) && td->o.overwrite && !td->o.file_append) ||
  63             (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
  64                 new_layout = 1;
  65         if (td_write(td) && !td->o.overwrite && !td->o.file_append)
  66                 unlink_file = 1;
  67
  68         if (unlink_file || new_layout) {
  69                 int ret;
  70
  71                 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
  72
  73                 ret = td_io_unlink_file(td, f);
  74                 if (ret != 0 && ret != ENOENT) {
  75                         td_verror(td, errno, "unlink");
  76                         return 1;
  77                 }
  78         }
  79
  80         flags = O_WRONLY;
  81         if (td->o.allow_create)
  82                 flags |= O_CREAT;
  83         if (new_layout)
  84                 flags |= O_TRUNC;
  85
  86 #ifdef WIN32
  87         flags |= _O_BINARY;
  88 #endif
  89
  90         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  91         f->fd = open(f->file_name, flags, 0644);
  92         if (f->fd < 0) {
  93                 int err = errno;
  94
  95                 if (err == ENOENT && !td->o.allow_create)
  96                         log_err("fio: file creation disallowed by "
  97                                         "allow_file_create=0\n");
  98                 else
  99                         td_verror(td, err, "open");
 100                 return 1;
 101         }
 102
 103 #ifdef CONFIG_POSIX_FALLOCATE
 104         if (!td->o.fill_device) {
 105                 switch (td->o.fallocate_mode) {
 106                 case FIO_FALLOCATE_NONE:
 107                         break;
 108                 case FIO_FALLOCATE_POSIX:
 109                         dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
 110                                  f->file_name,
 111                                  (unsigned long long) f->real_file_size);
 112
 113                         r = posix_fallocate(f->fd, 0, f->real_file_size);
 114                         if (r > 0) {
 115                                 log_err("fio: posix_fallocate fails: %s\n",
 116                                                 strerror(r));
 117                         }
 118                         break;
 119 #ifdef CONFIG_LINUX_FALLOCATE
 120                 case FIO_FALLOCATE_KEEP_SIZE:
 121                         dprint(FD_FILE,
 122                                 "fallocate(FALLOC_FL_KEEP_SIZE) "
 123                                 "file %s size %llu\n", f->file_name,
 124                                 (unsigned long long) f->real_file_size);
 125
 126                         r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
 127                                         f->real_file_size);
 128                         if (r != 0)
 129                                 td_verror(td, errno, "fallocate");
 130
 131                         break;
 132 #endif /* CONFIG_LINUX_FALLOCATE */
 133                 default:
 134                         log_err("fio: unknown fallocate mode: %d\n",
 135                                 td->o.fallocate_mode);
 136                         assert(0);
 137                 }
 138         }
 139 #endif /* CONFIG_POSIX_FALLOCATE */
 140
 141         /*
 142          * If our jobs don't require regular files initially, we're done.
 143          */
 144         if (!new_layout)
 145                 goto done;
 146
 147         /*
 148          * The size will be -1ULL when fill_device is used, so don't truncate
 149          * or fallocate this file, just write it
 150          */
 151         if (!td->o.fill_device) {
 152                 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
 153                                         (unsigned long long) f->real_file_size);
 154                 if (ftruncate(f->fd, f->real_file_size) == -1) {
 155                         if (errno != EFBIG) {
 156                                 td_verror(td, errno, "ftruncate");
 157                                 goto err;
 158                         }
 159                 }
 160         }
 161
 162         b = malloc(td->o.max_bs[DDIR_WRITE]);
 163
 164         left = f->real_file_size;
 165         while (left && !td->terminate) {
 166                 bs = td->o.max_bs[DDIR_WRITE];
 167                 if (bs > left)
 168                         bs = left;
 169
 170                 fill_io_buffer(td, b, bs, bs);
 171
 172                 r = write(f->fd, b, bs);
 173
 174                 if (r > 0) {
 175                         left -= r;
 176                         continue;
 177                 } else {
 178                         if (r < 0) {
 179                                 int __e = errno;
 180
 181                                 if (__e == ENOSPC) {
 182                                         if (td->o.fill_device)
 183                                                 break;
 184                                         log_info("fio: ENOSPC on laying out "
 185                                                  "file, stopping\n");
 186                                         break;
 187                                 }
 188                                 td_verror(td, errno, "write");
 189                         } else
 190                                 td_verror(td, EIO, "write");
 191
 192                         break;
 193                 }
 194         }
 195
 196         if (td->terminate) {
 197                 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
 198                 td_io_unlink_file(td, f);
 199         } else if (td->o.create_fsync) {
 200                 if (fsync(f->fd) < 0) {
 201                         td_verror(td, errno, "fsync");
 202                         goto err;
 203                 }
 204         }
 205         if (td->o.fill_device && !td_write(td)) {
 206                 fio_file_clear_size_known(f);
 207                 if (td_io_get_file_size(td, f))
 208                         goto err;
 209                 if (f->io_size > f->real_file_size)
 210                         f->io_size = f->real_file_size;
 211         }
 212
 213         free(b);
 214 done:
 215         return 0;
 216 err:
 217         close(f->fd);
 218         f->fd = -1;
 219         if (b)
 220                 free(b);
 221         return 1;
 222 }
 223
 224 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 225 {
 226         int ret = 0, r, did_open = 0, old_runstate;
 227         unsigned long long left;
 228         unsigned int bs;
 229         char *b;
 230
 231         if (td_ioengine_flagged(td, FIO_PIPEIO))
 232                 return 0;
 233
 234         if (!fio_file_open(f)) {
 235                 if (td->io_ops->open_file(td, f)) {
 236                         log_err("fio: cannot pre-read, failed to open file\n");
 237                         return 1;
 238                 }
 239                 did_open = 1;
 240         }
 241
 242         old_runstate = td_bump_runstate(td, TD_PRE_READING);
 243
 244         bs = td->o.max_bs[DDIR_READ];
 245         b = malloc(bs);
 246         memset(b, 0, bs);
 247
 248         if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
 249                 td_verror(td, errno, "lseek");
 250                 log_err("fio: failed to lseek pre-read file\n");
 251                 ret = 1;
 252                 goto error;
 253         }
 254
 255         left = f->io_size;
 256
 257         while (left && !td->terminate) {
 258                 if (bs > left)
 259                         bs = left;
 260
 261                 r = read(f->fd, b, bs);
 262
 263                 if (r == (int) bs) {
 264                         left -= bs;
 265                         continue;
 266                 } else {
 267                         td_verror(td, EIO, "pre_read");
 268                         break;
 269                 }
 270         }
 271
 272 error:
 273         td_restore_runstate(td, old_runstate);
 274
 275         if (did_open)
 276                 td->io_ops->close_file(td, f);
 277
 278         free(b);
 279         return ret;
 280 }
 281
 282 unsigned long long get_rand_file_size(struct thread_data *td)
 283 {
 284         unsigned long long ret, sized;
 285         uint64_t frand_max;
 286         unsigned long r;
 287
 288         frand_max = rand_max(&td->file_size_state);
 289         r = __rand(&td->file_size_state);
 290         sized = td->o.file_size_high - td->o.file_size_low;
 291         ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
 292         ret += td->o.file_size_low;
 293         ret -= (ret % td->o.rw_min_bs);
 294         return ret;
 295 }
 296
 297 static int file_size(struct thread_data *td, struct fio_file *f)
 298 {
 299         struct stat st;
 300
 301         if (stat(f->file_name, &st) == -1) {
 302                 td_verror(td, errno, "fstat");
 303                 return 1;
 304         }
 305
 306         f->real_file_size = st.st_size;
 307         return 0;
 308 }
 309
 310 static int bdev_size(struct thread_data *td, struct fio_file *f)
 311 {
 312         unsigned long long bytes = 0;
 313         int r;
 314
 315         if (td->io_ops->open_file(td, f)) {
 316                 log_err("fio: failed opening blockdev %s for size check\n",
 317                         f->file_name);
 318                 return 1;
 319         }
 320
 321         r = blockdev_size(f, &bytes);
 322         if (r) {
 323                 td_verror(td, r, "blockdev_size");
 324                 goto err;
 325         }
 326
 327         if (!bytes) {
 328                 log_err("%s: zero sized block device?\n", f->file_name);
 329                 goto err;
 330         }
 331
 332         f->real_file_size = bytes;
 333         td->io_ops->close_file(td, f);
 334         return 0;
 335 err:
 336         td->io_ops->close_file(td, f);
 337         return 1;
 338 }
 339
 340 static int char_size(struct thread_data *td, struct fio_file *f)
 341 {
 342 #ifdef FIO_HAVE_CHARDEV_SIZE
 343         unsigned long long bytes = 0;
 344         int r;
 345
 346         if (td->io_ops->open_file(td, f)) {
 347                 log_err("fio: failed opening chardev %s for size check\n",
 348                         f->file_name);
 349                 return 1;
 350         }
 351
 352         r = chardev_size(f, &bytes);
 353         if (r) {
 354                 td_verror(td, r, "chardev_size");
 355                 goto err;
 356         }
 357
 358         if (!bytes) {
 359                 log_err("%s: zero sized char device?\n", f->file_name);
 360                 goto err;
 361         }
 362
 363         f->real_file_size = bytes;
 364         td->io_ops->close_file(td, f);
 365         return 0;
 366 err:
 367         td->io_ops->close_file(td, f);
 368         return 1;
 369 #else
 370         f->real_file_size = -1ULL;
 371         return 0;
 372 #endif
 373 }
 374
 375 static int get_file_size(struct thread_data *td, struct fio_file *f)
 376 {
 377         int ret = 0;
 378
 379         if (fio_file_size_known(f))
 380                 return 0;
 381
 382         if (f->filetype == FIO_TYPE_FILE)
 383                 ret = file_size(td, f);
 384         else if (f->filetype == FIO_TYPE_BLOCK)
 385                 ret = bdev_size(td, f);
 386         else if (f->filetype == FIO_TYPE_CHAR)
 387                 ret = char_size(td, f);
 388         else
 389                 f->real_file_size = -1ULL;
 390
 391         /*
 392          * Leave ->real_file_size with 0 since it could be expectation
 393          * of initial setup for regular files.
 394          */
 395         if (ret)
 396                 return ret;
 397
 398         /*
 399          * If ->real_file_size is -1, a conditional for the message
 400          * "offset extends end" is always true, but it makes no sense,
 401          * so just return the same value here.
 402          */
 403         if (f->real_file_size == -1ULL) {
 404                 log_info("%s: failed to get file size of %s\n", td->o.name,
 405                                         f->file_name);
 406                 return 1;
 407         }
 408
 409         if (td->o.start_offset && f->file_offset == 0)
 410                 dprint(FD_FILE, "offset of file %s not initialized yet\n",
 411                                         f->file_name);
 412         /*
 413          * ->file_offset normally hasn't been initialized yet, so this
 414          * is basically always false.
 415          */
 416         if (f->file_offset > f->real_file_size) {
 417                 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
 418                                         (unsigned long long) f->file_offset,
 419                                         (unsigned long long) f->real_file_size);
 420                 return 1;
 421         }
 422
 423         fio_file_set_size_known(f);
 424         return 0;
 425 }
 426
 427 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 428                                    unsigned long long off,
 429                                    unsigned long long len)
 430 {
 431         int errval = 0, ret = 0;
 432
 433 #ifdef CONFIG_ESX
 434         return 0;
 435 #endif
 436
 437         if (len == -1ULL)
 438                 len = f->io_size;
 439         if (off == -1ULL)
 440                 off = f->file_offset;
 441
 442         if (len == -1ULL || off == -1ULL)
 443                 return 0;
 444
 445         if (td->io_ops->invalidate) {
 446                 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
 447                         f->file_name);
 448                 ret = td->io_ops->invalidate(td, f);
 449                 if (ret < 0)
 450                         errval = -ret;
 451         } else if (f->filetype == FIO_TYPE_FILE) {
 452                 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
 453                         f->file_name, off, len);
 454                 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 455                 if (ret)
 456                         errval = ret;
 457         } else if (f->filetype == FIO_TYPE_BLOCK) {
 458                 int retry_count = 0;
 459
 460                 dprint(FD_IO, "drop page cache %s\n", f->file_name);
 461                 ret = blockdev_invalidate_cache(f);
 462                 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
 463                         /*
 464                          * Linux multipath devices reject ioctl while
 465                          * the maps are being updated. That window can
 466                          * last tens of milliseconds; we'll try up to
 467                          * a quarter of a second.
 468                          */
 469                         usleep(10000);
 470                         ret = blockdev_invalidate_cache(f);
 471                 }
 472                 if (ret < 0 && errno == EACCES && geteuid()) {
 473                         if (!root_warn) {
 474                                 log_err("fio: only root may flush block "
 475                                         "devices. Cache flush bypassed!\n");
 476                                 root_warn = 1;
 477                         }
 478                         ret = 0;
 479                 }
 480                 if (ret < 0)
 481                         errval = errno;
 482                 else if (ret) /* probably not supported */
 483                         errval = ret;
 484         } else if (f->filetype == FIO_TYPE_CHAR ||
 485                    f->filetype == FIO_TYPE_PIPE) {
 486                 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
 487                 ret = 0;
 488         }
 489
 490         /*
 491          * Cache flushing isn't a fatal condition, and we know it will
 492          * happen on some platforms where we don't have the proper
 493          * function to flush eg block device caches. So just warn and
 494          * continue on our way.
 495          */
 496         if (errval)
 497                 log_info("fio: cache invalidation of %s failed: %s\n",
 498                          f->file_name, strerror(errval));
 499
 500         return 0;
 501
 502 }
 503
 504 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 505 {
 506         if (!fio_file_open(f))
 507                 return 0;
 508
 509         return __file_invalidate_cache(td, f, -1ULL, -1ULL);
 510 }
 511
 512 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 513 {
 514         int ret = 0;
 515
 516         dprint(FD_FILE, "fd close %s\n", f->file_name);
 517
 518         remove_file_hash(f);
 519
 520         if (close(f->fd) < 0)
 521                 ret = errno;
 522
 523         f->fd = -1;
 524
 525         if (f->shadow_fd != -1) {
 526                 close(f->shadow_fd);
 527                 f->shadow_fd = -1;
 528         }
 529
 530         f->engine_pos = 0;
 531         return ret;
 532 }
 533
 534 int file_lookup_open(struct fio_file *f, int flags)
 535 {
 536         struct fio_file *__f;
 537         int from_hash;
 538
 539         __f = lookup_file_hash(f->file_name);
 540         if (__f) {
 541                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 542                 f->lock = __f->lock;
 543                 from_hash = 1;
 544         } else {
 545                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 546                 from_hash = 0;
 547         }
 548
 549 #ifdef WIN32
 550         flags |= _O_BINARY;
 551 #endif
 552
 553         f->fd = open(f->file_name, flags, 0600);
 554         return from_hash;
 555 }
 556
 557 static int file_close_shadow_fds(struct thread_data *td)
 558 {
 559         struct fio_file *f;
 560         int num_closed = 0;
 561         unsigned int i;
 562
 563         for_each_file(td, f, i) {
 564                 if (f->shadow_fd == -1)
 565                         continue;
 566
 567                 close(f->shadow_fd);
 568                 f->shadow_fd = -1;
 569                 num_closed++;
 570         }
 571
 572         return num_closed;
 573 }
 574
 575 int generic_open_file(struct thread_data *td, struct fio_file *f)
 576 {
 577         int is_std = 0;
 578         int flags = 0;
 579         int from_hash = 0;
 580
 581         dprint(FD_FILE, "fd open %s\n", f->file_name);
 582
 583         if (!strcmp(f->file_name, "-")) {
 584                 if (td_rw(td)) {
 585                         log_err("fio: can't read/write to stdin/out\n");
 586                         return 1;
 587                 }
 588                 is_std = 1;
 589
 590                 /*
 591                  * move output logging to stderr, if we are writing to stdout
 592                  */
 593                 if (td_write(td))
 594                         f_out = stderr;
 595         }
 596
 597         if (td_trim(td))
 598                 goto skip_flags;
 599         if (td->o.odirect)
 600                 flags |= OS_O_DIRECT;
 601         if (td->o.oatomic) {
 602                 if (!FIO_O_ATOMIC) {
 603                         td_verror(td, EINVAL, "OS does not support atomic IO");
 604                         return 1;
 605                 }
 606                 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
 607         }
 608         if (td->o.sync_io)
 609                 flags |= O_SYNC;
 610         if (td->o.create_on_open && td->o.allow_create)
 611                 flags |= O_CREAT;
 612 skip_flags:
 613         if (f->filetype != FIO_TYPE_FILE)
 614                 flags |= FIO_O_NOATIME;
 615
 616 open_again:
 617         if (td_write(td)) {
 618                 if (!read_only)
 619                         flags |= O_RDWR;
 620
 621                 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
 622                         flags |= O_CREAT;
 623
 624                 if (is_std)
 625                         f->fd = dup(STDOUT_FILENO);
 626                 else
 627                         from_hash = file_lookup_open(f, flags);
 628         } else if (td_read(td)) {
 629                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 630                         flags |= O_RDWR;
 631                 else
 632                         flags |= O_RDONLY;
 633
 634                 if (is_std)
 635                         f->fd = dup(STDIN_FILENO);
 636                 else
 637                         from_hash = file_lookup_open(f, flags);
 638         } else if (td_trim(td)) {
 639                 assert(!td_rw(td)); /* should have matched above */
 640                 flags |= O_RDWR;
 641                 from_hash = file_lookup_open(f, flags);
 642         }
 643
 644         if (f->fd == -1) {
 645                 char buf[FIO_VERROR_SIZE];
 646                 int __e = errno;
 647
 648                 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
 649                         flags &= ~FIO_O_NOATIME;
 650                         goto open_again;
 651                 }
 652                 if (__e == EMFILE && file_close_shadow_fds(td))
 653                         goto open_again;
 654
 655                 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
 656
 657                 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
 658                         log_err("fio: looks like your file system does not " \
 659                                 "support direct=1/buffered=0\n");
 660                 }
 661
 662                 td_verror(td, __e, buf);
 663                 return 1;
 664         }
 665
 666         if (!from_hash && f->fd != -1) {
 667                 if (add_file_hash(f)) {
 668                         int fio_unused ret;
 669
 670                         /*
 671                          * Stash away descriptor for later close. This is to
 672                          * work-around a "feature" on Linux, where a close of
 673                          * an fd that has been opened for write will trigger
 674                          * udev to call blkid to check partitions, fs id, etc.
 675                          * That pollutes the device cache, which can slow down
 676                          * unbuffered accesses.
 677                          */
 678                         if (f->shadow_fd == -1)
 679                                 f->shadow_fd = f->fd;
 680                         else {
 681                                 /*
 682                                  * OK to ignore, we haven't done anything
 683                                  * with it
 684                                  */
 685                                 ret = generic_close_file(td, f);
 686                         }
 687                         goto open_again;
 688                 }
 689         }
 690
 691         return 0;
 692 }
 693
 694 /*
 695  * This function i.e. get_file_size() is the default .get_file_size
 696  * implementation of majority of I/O engines.
 697  */
 698 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
 699 {
 700         return get_file_size(td, f);
 701 }
 702
 703 /*
 704  * open/close all files, so that ->real_file_size gets set
 705  */
 706 static int get_file_sizes(struct thread_data *td)
 707 {
 708         struct fio_file *f;
 709         unsigned int i;
 710         int err = 0;
 711
 712         for_each_file(td, f, i) {
 713                 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
 714                                                                 f->file_name);
 715
 716                 if (td_io_get_file_size(td, f)) {
 717                         if (td->error != ENOENT) {
 718                                 log_err("%s\n", td->verror);
 719                                 err = 1;
 720                                 break;
 721                         }
 722                         clear_error(td);
 723                 }
 724
 725                 /*
 726                  * There are corner cases where we end up with -1 for
 727                  * ->real_file_size due to unsupported file type, etc.
 728                  * We then just set to size option value divided by number
 729                  * of files, similar to the way file ->io_size is set.
 730                  * stat(2) failure doesn't set ->real_file_size to -1.
 731                  */
 732                 if (f->real_file_size == -1ULL && td->o.size)
 733                         f->real_file_size = td->o.size / td->o.nr_files;
 734         }
 735
 736         return err;
 737 }
 738
 739 struct fio_mount {
 740         struct flist_head list;
 741         const char *base;
 742         char __base[256];
 743         unsigned int key;
 744 };
 745
 746 /*
 747  * Get free number of bytes for each file on each unique mount.
 748  */
 749 static unsigned long long get_fs_free_counts(struct thread_data *td)
 750 {
 751         struct flist_head *n, *tmp;
 752         unsigned long long ret = 0;
 753         struct fio_mount *fm;
 754         FLIST_HEAD(list);
 755         struct fio_file *f;
 756         unsigned int i;
 757
 758         for_each_file(td, f, i) {
 759                 struct stat sb;
 760                 char buf[256];
 761
 762                 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
 763                         if (f->real_file_size != -1ULL)
 764                                 ret += f->real_file_size;
 765                         continue;
 766                 } else if (f->filetype != FIO_TYPE_FILE)
 767                         continue;
 768
 769                 buf[255] = '\0';
 770                 strncpy(buf, f->file_name, 255);
 771
 772                 if (stat(buf, &sb) < 0) {
 773                         if (errno != ENOENT)
 774                                 break;
 775                         strcpy(buf, ".");
 776                         if (stat(buf, &sb) < 0)
 777                                 break;
 778                 }
 779
 780                 fm = NULL;
 781                 flist_for_each(n, &list) {
 782                         fm = flist_entry(n, struct fio_mount, list);
 783                         if (fm->key == sb.st_dev)
 784                                 break;
 785
 786                         fm = NULL;
 787                 }
 788
 789                 if (fm)
 790                         continue;
 791
 792                 fm = calloc(1, sizeof(*fm));
 793                 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
 794                 fm->base = basename(fm->__base);
 795                 fm->key = sb.st_dev;
 796                 flist_add(&fm->list, &list);
 797         }
 798
 799         flist_for_each_safe(n, tmp, &list) {
 800                 unsigned long long sz;
 801
 802                 fm = flist_entry(n, struct fio_mount, list);
 803                 flist_del(&fm->list);
 804
 805                 sz = get_fs_free_size(fm->base);
 806                 if (sz && sz != -1ULL)
 807                         ret += sz;
 808
 809                 free(fm);
 810         }
 811
 812         return ret;
 813 }
 814
 815 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 816 {
 817         struct thread_options *o = &td->o;
 818
 819         if (o->file_append && f->filetype == FIO_TYPE_FILE)
 820                 return f->real_file_size;
 821
 822         return td->o.start_offset +
 823                 td->subjob_number * td->o.offset_increment;
 824 }
 825
 826 /*
 827  * Open the files and setup files sizes, creating files if necessary.
 828  */
 829 int setup_files(struct thread_data *td)
 830 {
 831         unsigned long long total_size, extend_size;
 832         struct thread_options *o = &td->o;
 833         struct fio_file *f;
 834         unsigned int i, nr_fs_extra = 0;
 835         int err = 0, need_extend;
 836         int old_state;
 837         const unsigned int bs = td_min_bs(td);
 838         uint64_t fs = 0;
 839
 840         dprint(FD_FILE, "setup files\n");
 841
 842         old_state = td_bump_runstate(td, TD_SETTING_UP);
 843
 844         if (o->read_iolog_file)
 845                 goto done;
 846
 847         /*
 848          * Find out physical size of files or devices for this thread,
 849          * before we determine I/O size and range of our targets.
 850          * If ioengine defines a setup() method, it's responsible for
 851          * opening the files and setting f->real_file_size to indicate
 852          * the valid range for that file.
 853          */
 854         if (td->io_ops->setup)
 855                 err = td->io_ops->setup(td);
 856         else
 857                 err = get_file_sizes(td);
 858
 859         if (err)
 860                 goto err_out;
 861
 862         /*
 863          * check sizes. if the files/devices do not exist and the size
 864          * isn't passed to fio, abort.
 865          */
 866         total_size = 0;
 867         for_each_file(td, f, i) {
 868                 f->fileno = i;
 869                 if (f->real_file_size == -1ULL)
 870                         total_size = -1ULL;
 871                 else
 872                         total_size += f->real_file_size;
 873         }
 874
 875         if (o->fill_device)
 876                 td->fill_device_size = get_fs_free_counts(td);
 877
 878         /*
 879          * device/file sizes are zero and no size given, punt
 880          */
 881         if ((!total_size || total_size == -1ULL) && !o->size &&
 882             !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
 883             !(o->nr_files && (o->file_size_low || o->file_size_high))) {
 884                 log_err("%s: you need to specify size=\n", o->name);
 885                 td_verror(td, EINVAL, "total_file_size");
 886                 goto err_out;
 887         }
 888
 889         /*
 890          * Calculate per-file size and potential extra size for the
 891          * first files, if needed (i.e. if we don't have a fixed size).
 892          */
 893         if (!o->file_size_low && o->nr_files) {
 894                 uint64_t all_fs;
 895
 896                 fs = o->size / o->nr_files;
 897                 all_fs = fs * o->nr_files;
 898
 899                 if (all_fs < o->size)
 900                         nr_fs_extra = (o->size - all_fs) / bs;
 901         }
 902
 903         /*
 904          * now file sizes are known, so we can set ->io_size. if size= is
 905          * not given, ->io_size is just equal to ->real_file_size. if size
 906          * is given, ->io_size is size / nr_files.
 907          */
 908         extend_size = total_size = 0;
 909         need_extend = 0;
 910         for_each_file(td, f, i) {
 911                 f->file_offset = get_start_offset(td, f);
 912
 913                 /*
 914                  * Update ->io_size depending on options specified.
 915                  * ->file_size_low being 0 means filesize option isn't set.
 916                  * Non zero ->file_size_low equals ->file_size_high means
 917                  * filesize option is set in a fixed size format.
 918                  * Non zero ->file_size_low not equals ->file_size_high means
 919                  * filesize option is set in a range format.
 920                  */
 921                 if (!o->file_size_low) {
 922                         /*
 923                          * no file size or range given, file size is equal to
 924                          * total size divided by number of files. If the size
 925                          * doesn't divide nicely with the min blocksize,
 926                          * make the first files bigger.
 927                          */
 928                         f->io_size = fs;
 929                         if (nr_fs_extra) {
 930                                 nr_fs_extra--;
 931                                 f->io_size += bs;
 932                         }
 933
 934                         /*
 935                          * We normally don't come here for regular files, but
 936                          * if the result is 0 for a regular file, set it to the
 937                          * real file size. This could be size of the existing
 938                          * one if it already exists, but otherwise will be set
 939                          * to 0. A new file won't be created because
 940                          * ->io_size + ->file_offset equals ->real_file_size.
 941                          */
 942                         if (!f->io_size) {
 943                                 if (f->file_offset > f->real_file_size)
 944                                         goto err_offset;
 945                                 f->io_size = f->real_file_size - f->file_offset;
 946                                 if (!f->io_size)
 947                                         log_info("fio: file %s may be ignored\n",
 948                                                 f->file_name);
 949                         }
 950                 } else if (f->real_file_size < o->file_size_low ||
 951                            f->real_file_size > o->file_size_high) {
 952                         if (f->file_offset > o->file_size_low)
 953                                 goto err_offset;
 954                         /*
 955                          * file size given. if it's fixed, use that. if it's a
 956                          * range, generate a random size in-between.
 957                          */
 958                         if (o->file_size_low == o->file_size_high)
 959                                 f->io_size = o->file_size_low - f->file_offset;
 960                         else {
 961                                 f->io_size = get_rand_file_size(td)
 962                                                 - f->file_offset;
 963                         }
 964                 } else
 965                         f->io_size = f->real_file_size - f->file_offset;
 966
 967                 if (f->io_size == -1ULL)
 968                         total_size = -1ULL;
 969                 else {
 970                         if (o->size_percent) {
 971                                 f->io_size = (f->io_size * o->size_percent) / 100;
 972                                 f->io_size -= (f->io_size % td_min_bs(td));
 973                         }
 974                         total_size += f->io_size;
 975                 }
 976
 977                 if (f->filetype == FIO_TYPE_FILE &&
 978                     (f->io_size + f->file_offset) > f->real_file_size &&
 979                     !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
 980                         if (!o->create_on_open) {
 981                                 need_extend++;
 982                                 extend_size += (f->io_size + f->file_offset);
 983                                 fio_file_set_extend(f);
 984                         } else
 985                                 f->real_file_size = f->io_size + f->file_offset;
 986                 }
 987         }
 988
 989         if (td->o.block_error_hist) {
 990                 int len;
 991
 992                 assert(td->o.nr_files == 1);    /* checked in fixup_options */
 993                 f = td->files[0];
 994                 len = f->io_size / td->o.bs[DDIR_TRIM];
 995                 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
 996                         log_err("fio: cannot calculate block histogram with "
 997                                 "%d trim blocks, maximum %d\n",
 998                                 len, MAX_NR_BLOCK_INFOS);
 999                         td_verror(td, EINVAL, "block_error_hist");
1000                         goto err_out;
1001                 }
1002
1003                 td->ts.nr_block_infos = len;
1004                 for (i = 0; i < len; i++)
1005                         td->ts.block_infos[i] =
1006                                 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1007         } else
1008                 td->ts.nr_block_infos = 0;
1009
1010         if (!o->size || (total_size && o->size > total_size))
1011                 o->size = total_size;
1012
1013         if (o->size < td_min_bs(td)) {
1014                 log_err("fio: blocksize too large for data set\n");
1015                 goto err_out;
1016         }
1017
1018         /*
1019          * See if we need to extend some files, typically needed when our
1020          * target regular files don't exist yet, but our jobs require them
1021          * initially due to read I/Os.
1022          */
1023         if (need_extend) {
1024                 temp_stall_ts = 1;
1025                 if (output_format & FIO_OUTPUT_NORMAL) {
1026                         log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1027                                  o->name,
1028                                  need_extend > 1 ? "s" : "",
1029                                  need_extend,
1030                                  need_extend > 1 ? "s" : "",
1031                                  need_extend > 1 ? "total " : "",
1032                                  extend_size >> 20);
1033                 }
1034
1035                 for_each_file(td, f, i) {
1036                         unsigned long long old_len = -1ULL, extend_len = -1ULL;
1037
1038                         if (!fio_file_extend(f))
1039                                 continue;
1040
1041                         assert(f->filetype == FIO_TYPE_FILE);
1042                         fio_file_clear_extend(f);
1043                         if (!o->fill_device) {
1044                                 old_len = f->real_file_size;
1045                                 extend_len = f->io_size + f->file_offset -
1046                                                 old_len;
1047                         }
1048                         f->real_file_size = (f->io_size + f->file_offset);
1049                         err = extend_file(td, f);
1050                         if (err)
1051                                 break;
1052
1053                         err = __file_invalidate_cache(td, f, old_len,
1054                                                                 extend_len);
1055
1056                         /*
1057                          * Shut up static checker
1058                          */
1059                         if (f->fd != -1)
1060                                 close(f->fd);
1061
1062                         f->fd = -1;
1063                         if (err)
1064                                 break;
1065                 }
1066                 temp_stall_ts = 0;
1067         }
1068
1069         if (err)
1070                 goto err_out;
1071
1072         if (!o->zone_size)
1073                 o->zone_size = o->size;
1074
1075         /*
1076          * iolog already set the total io size, if we read back
1077          * stored entries.
1078          */
1079         if (!o->read_iolog_file) {
1080                 if (o->io_size)
1081                         td->total_io_size = o->io_size * o->loops;
1082                 else
1083                         td->total_io_size = o->size * o->loops;
1084         }
1085
1086 done:
1087         if (o->create_only)
1088                 td->done = 1;
1089
1090         td_restore_runstate(td, old_state);
1091         return 0;
1092 err_offset:
1093         log_err("%s: you need to specify valid offset=\n", o->name);
1094 err_out:
1095         td_restore_runstate(td, old_state);
1096         return 1;
1097 }
1098
1099 int pre_read_files(struct thread_data *td)
1100 {
1101         struct fio_file *f;
1102         unsigned int i;
1103
1104         dprint(FD_FILE, "pre_read files\n");
1105
1106         for_each_file(td, f, i) {
1107                 pre_read_file(td, f);
1108         }
1109
1110         return 1;
1111 }
1112
1113 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1114 {
1115         unsigned int range_size, seed;
1116         unsigned long nranges;
1117         uint64_t fsize;
1118
1119         range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1120         fsize = min(f->real_file_size, f->io_size);
1121
1122         nranges = (fsize + range_size - 1) / range_size;
1123
1124         seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1125         if (!td->o.rand_repeatable)
1126                 seed = td->rand_seeds[4];
1127
1128         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1129                 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1130         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1131                 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1132         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1133                 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1134
1135         return 1;
1136 }
1137
1138 static int init_rand_distribution(struct thread_data *td)
1139 {
1140         struct fio_file *f;
1141         unsigned int i;
1142         int state;
1143
1144         if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1145                 return 0;
1146
1147         state = td_bump_runstate(td, TD_SETTING_UP);
1148
1149         for_each_file(td, f, i)
1150                 __init_rand_distribution(td, f);
1151
1152         td_restore_runstate(td, state);
1153
1154         return 1;
1155 }
1156
1157 /*
1158  * Check if the number of blocks exceeds the randomness capability of
1159  * the selected generator. Tausworthe is 32-bit, the others are fullly
1160  * 64-bit capable.
1161  */
1162 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1163                                  uint64_t blocks)
1164 {
1165         if (blocks <= FRAND32_MAX)
1166                 return 0;
1167         if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1168                 return 0;
1169
1170         /*
1171          * If the user hasn't specified a random generator, switch
1172          * to tausworthe64 with informational warning. If the user did
1173          * specify one, just warn.
1174          */
1175         log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1176                         f->file_name);
1177
1178         if (!fio_option_is_set(&td->o, random_generator)) {
1179                 log_info("fio: Switching to tausworthe64. Use the "
1180                          "random_generator= option to get rid of this "
1181                          "warning.\n");
1182                 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1183                 return 0;
1184         }
1185
1186         /*
1187          * Just make this information to avoid breaking scripts.
1188          */
1189         log_info("fio: Use the random_generator= option to switch to lfsr or "
1190                          "tausworthe64.\n");
1191         return 0;
1192 }
1193
1194 int init_random_map(struct thread_data *td)
1195 {
1196         unsigned long long blocks;
1197         struct fio_file *f;
1198         unsigned int i;
1199
1200         if (init_rand_distribution(td))
1201                 return 0;
1202         if (!td_random(td))
1203                 return 0;
1204
1205         for_each_file(td, f, i) {
1206                 uint64_t fsize = min(f->real_file_size, f->io_size);
1207
1208                 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1209
1210                 if (check_rand_gen_limits(td, f, blocks))
1211                         return 1;
1212
1213                 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1214                         unsigned long seed;
1215
1216                         seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1217
1218                         if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1219                                 fio_file_set_lfsr(f);
1220                                 continue;
1221                         }
1222                 } else if (!td->o.norandommap) {
1223                         f->io_axmap = axmap_new(blocks);
1224                         if (f->io_axmap) {
1225                                 fio_file_set_axmap(f);
1226                                 continue;
1227                         }
1228                 } else if (td->o.norandommap)
1229                         continue;
1230
1231                 if (!td->o.softrandommap) {
1232                         log_err("fio: failed allocating random map. If running"
1233                                 " a large number of jobs, try the 'norandommap'"
1234                                 " option or set 'softrandommap'. Or give"
1235                                 " a larger --alloc-size to fio.\n");
1236                         return 1;
1237                 }
1238
1239                 log_info("fio: file %s failed allocating random map. Running "
1240                          "job without.\n", f->file_name);
1241         }
1242
1243         return 0;
1244 }
1245
1246 void close_files(struct thread_data *td)
1247 {
1248         struct fio_file *f;
1249         unsigned int i;
1250
1251         for_each_file(td, f, i) {
1252                 if (fio_file_open(f))
1253                         td_io_close_file(td, f);
1254         }
1255 }
1256
1257 void close_and_free_files(struct thread_data *td)
1258 {
1259         struct fio_file *f;
1260         unsigned int i;
1261
1262         dprint(FD_FILE, "close files\n");
1263
1264         for_each_file(td, f, i) {
1265                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1266                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1267                         td_io_unlink_file(td, f);
1268                 }
1269
1270                 if (fio_file_open(f))
1271                         td_io_close_file(td, f);
1272
1273                 remove_file_hash(f);
1274
1275                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1276                         dprint(FD_FILE, "free unlink %s\n", f->file_name);
1277                         td_io_unlink_file(td, f);
1278                 }
1279
1280                 sfree(f->file_name);
1281                 f->file_name = NULL;
1282                 if (fio_file_axmap(f)) {
1283                         axmap_free(f->io_axmap);
1284                         f->io_axmap = NULL;
1285                 }
1286                 sfree(f);
1287         }
1288
1289         td->o.filename = NULL;
1290         free(td->files);
1291         free(td->file_locks);
1292         td->files_index = 0;
1293         td->files = NULL;
1294         td->file_locks = NULL;
1295         td->o.file_lock_mode = FILE_LOCK_NONE;
1296         td->o.nr_files = 0;
1297 }
1298
1299 static void get_file_type(struct fio_file *f)
1300 {
1301         struct stat sb;
1302
1303         if (!strcmp(f->file_name, "-"))
1304                 f->filetype = FIO_TYPE_PIPE;
1305         else
1306                 f->filetype = FIO_TYPE_FILE;
1307
1308 #ifdef WIN32
1309         /* \\.\ is the device namespace in Windows, where every file is
1310          * a block device */
1311         if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1312                 f->filetype = FIO_TYPE_BLOCK;
1313 #endif
1314
1315         if (!stat(f->file_name, &sb)) {
1316                 if (S_ISBLK(sb.st_mode))
1317                         f->filetype = FIO_TYPE_BLOCK;
1318                 else if (S_ISCHR(sb.st_mode))
1319                         f->filetype = FIO_TYPE_CHAR;
1320                 else if (S_ISFIFO(sb.st_mode))
1321                         f->filetype = FIO_TYPE_PIPE;
1322         }
1323 }
1324
1325 static bool __is_already_allocated(const char *fname, bool set)
1326 {
1327         struct flist_head *entry;
1328         bool ret;
1329
1330         ret = file_bloom_exists(fname, set);
1331         if (!ret)
1332                 return ret;
1333
1334         flist_for_each(entry, &filename_list) {
1335                 struct file_name *fn;
1336
1337                 fn = flist_entry(entry, struct file_name, list);
1338
1339                 if (!strcmp(fn->filename, fname))
1340                         return true;
1341         }
1342
1343         return false;
1344 }
1345
1346 static bool is_already_allocated(const char *fname)
1347 {
1348         bool ret;
1349
1350         fio_file_hash_lock();
1351         ret = __is_already_allocated(fname, false);
1352         fio_file_hash_unlock();
1353
1354         return ret;
1355 }
1356
1357 static void set_already_allocated(const char *fname)
1358 {
1359         struct file_name *fn;
1360
1361         fn = malloc(sizeof(struct file_name));
1362         fn->filename = strdup(fname);
1363
1364         fio_file_hash_lock();
1365         if (!__is_already_allocated(fname, true)) {
1366                 flist_add_tail(&fn->list, &filename_list);
1367                 fn = NULL;
1368         }
1369         fio_file_hash_unlock();
1370
1371         if (fn) {
1372                 free(fn->filename);
1373                 free(fn);
1374         }
1375 }
1376
1377 static void free_already_allocated(void)
1378 {
1379         struct flist_head *entry, *tmp;
1380         struct file_name *fn;
1381
1382         if (flist_empty(&filename_list))
1383                 return;
1384
1385         fio_file_hash_lock();
1386         flist_for_each_safe(entry, tmp, &filename_list) {
1387                 fn = flist_entry(entry, struct file_name, list);
1388                 free(fn->filename);
1389                 flist_del(&fn->list);
1390                 free(fn);
1391         }
1392
1393         fio_file_hash_unlock();
1394 }
1395
1396 static struct fio_file *alloc_new_file(struct thread_data *td)
1397 {
1398         struct fio_file *f;
1399
1400         f = smalloc(sizeof(*f));
1401         if (!f) {
1402                 assert(0);
1403                 return NULL;
1404         }
1405
1406         f->fd = -1;
1407         f->shadow_fd = -1;
1408         fio_file_reset(td, f);
1409         return f;
1410 }
1411
1412 bool exists_and_not_regfile(const char *filename)
1413 {
1414         struct stat sb;
1415
1416         if (lstat(filename, &sb) == -1)
1417                 return false;
1418
1419 #ifndef WIN32 /* NOT Windows */
1420         if (S_ISREG(sb.st_mode))
1421                 return false;
1422 #else
1423         /* \\.\ is the device namespace in Windows, where every file
1424          * is a device node */
1425         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1426                 return false;
1427 #endif
1428
1429         return true;
1430 }
1431
1432 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1433 {
1434         int cur_files = td->files_index;
1435         char file_name[PATH_MAX];
1436         struct fio_file *f;
1437         int len = 0;
1438
1439         dprint(FD_FILE, "add file %s\n", fname);
1440
1441         if (td->o.directory)
1442                 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1443                                         td->o.unique_filename);
1444
1445         sprintf(file_name + len, "%s", fname);
1446
1447         /* clean cloned siblings using existing files */
1448         if (numjob && is_already_allocated(file_name) &&
1449             !exists_and_not_regfile(fname))
1450                 return 0;
1451
1452         f = alloc_new_file(td);
1453
1454         if (td->files_size <= td->files_index) {
1455                 unsigned int new_size = td->o.nr_files + 1;
1456
1457                 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1458
1459                 td->files = realloc(td->files, new_size * sizeof(f));
1460                 if (td->files == NULL) {
1461                         log_err("fio: realloc OOM\n");
1462                         assert(0);
1463                 }
1464                 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1465                         td->file_locks = realloc(td->file_locks, new_size);
1466                         if (!td->file_locks) {
1467                                 log_err("fio: realloc OOM\n");
1468                                 assert(0);
1469                         }
1470                         td->file_locks[cur_files] = FILE_LOCK_NONE;
1471                 }
1472                 td->files_size = new_size;
1473         }
1474         td->files[cur_files] = f;
1475         f->fileno = cur_files;
1476
1477         /*
1478          * init function, io engine may not be loaded yet
1479          */
1480         if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1481                 f->real_file_size = -1ULL;
1482
1483         f->file_name = smalloc_strdup(file_name);
1484         if (!f->file_name)
1485                 assert(0);
1486
1487         get_file_type(f);
1488
1489         switch (td->o.file_lock_mode) {
1490         case FILE_LOCK_NONE:
1491                 break;
1492         case FILE_LOCK_READWRITE:
1493                 f->rwlock = fio_rwlock_init();
1494                 break;
1495         case FILE_LOCK_EXCLUSIVE:
1496                 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1497                 break;
1498         default:
1499                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1500                 assert(0);
1501         }
1502
1503         td->files_index++;
1504         if (f->filetype == FIO_TYPE_FILE)
1505                 td->nr_normal_files++;
1506
1507         set_already_allocated(file_name);
1508
1509         if (inc)
1510                 td->o.nr_files++;
1511
1512         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1513                                                         cur_files);
1514
1515         return cur_files;
1516 }
1517
1518 int add_file_exclusive(struct thread_data *td, const char *fname)
1519 {
1520         struct fio_file *f;
1521         unsigned int i;
1522
1523         for_each_file(td, f, i) {
1524                 if (!strcmp(f->file_name, fname))
1525                         return i;
1526         }
1527
1528         return add_file(td, fname, 0, 1);
1529 }
1530
1531 void get_file(struct fio_file *f)
1532 {
1533         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1534         assert(fio_file_open(f));
1535         f->references++;
1536 }
1537
1538 int put_file(struct thread_data *td, struct fio_file *f)
1539 {
1540         int f_ret = 0, ret = 0;
1541
1542         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1543
1544         if (!fio_file_open(f)) {
1545                 assert(f->fd == -1);
1546                 return 0;
1547         }
1548
1549         assert(f->references);
1550         if (--f->references)
1551                 return 0;
1552
1553         if (should_fsync(td) && td->o.fsync_on_close) {
1554                 f_ret = fsync(f->fd);
1555                 if (f_ret < 0)
1556                         f_ret = errno;
1557         }
1558
1559         if (td->io_ops->close_file)
1560                 ret = td->io_ops->close_file(td, f);
1561
1562         if (!ret)
1563                 ret = f_ret;
1564
1565         td->nr_open_files--;
1566         fio_file_clear_open(f);
1567         assert(f->fd == -1);
1568         return ret;
1569 }
1570
1571 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1572 {
1573         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1574                 return;
1575
1576         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1577                 if (ddir == DDIR_READ)
1578                         fio_rwlock_read(f->rwlock);
1579                 else
1580                         fio_rwlock_write(f->rwlock);
1581         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1582                 fio_mutex_down(f->lock);
1583
1584         td->file_locks[f->fileno] = td->o.file_lock_mode;
1585 }
1586
1587 void unlock_file(struct thread_data *td, struct fio_file *f)
1588 {
1589         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1590                 return;
1591
1592         if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1593                 fio_rwlock_unlock(f->rwlock);
1594         else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1595                 fio_mutex_up(f->lock);
1596
1597         td->file_locks[f->fileno] = FILE_LOCK_NONE;
1598 }
1599
1600 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1601 {
1602         if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1603                 return;
1604         if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1605                 unlock_file(td, f);
1606 }
1607
1608 static int recurse_dir(struct thread_data *td, const char *dirname)
1609 {
1610         struct dirent *dir;
1611         int ret = 0;
1612         DIR *D;
1613
1614         D = opendir(dirname);
1615         if (!D) {
1616                 char buf[FIO_VERROR_SIZE];
1617
1618                 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1619                 td_verror(td, errno, buf);
1620                 return 1;
1621         }
1622
1623         while ((dir = readdir(D)) != NULL) {
1624                 char full_path[PATH_MAX];
1625                 struct stat sb;
1626
1627                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1628                         continue;
1629
1630                 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1631
1632                 if (lstat(full_path, &sb) == -1) {
1633                         if (errno != ENOENT) {
1634                                 td_verror(td, errno, "stat");
1635                                 ret = 1;
1636                                 break;
1637                         }
1638                 }
1639
1640                 if (S_ISREG(sb.st_mode)) {
1641                         add_file(td, full_path, 0, 1);
1642                         continue;
1643                 }
1644                 if (!S_ISDIR(sb.st_mode))
1645                         continue;
1646
1647                 ret = recurse_dir(td, full_path);
1648                 if (ret)
1649                         break;
1650         }
1651
1652         closedir(D);
1653         return ret;
1654 }
1655
1656 int add_dir_files(struct thread_data *td, const char *path)
1657 {
1658         int ret = recurse_dir(td, path);
1659
1660         if (!ret)
1661                 log_info("fio: opendir added %d files\n", td->o.nr_files);
1662
1663         return ret;
1664 }
1665
1666 void dup_files(struct thread_data *td, struct thread_data *org)
1667 {
1668         struct fio_file *f;
1669         unsigned int i;
1670
1671         dprint(FD_FILE, "dup files: %d\n", org->files_index);
1672
1673         if (!org->files)
1674                 return;
1675
1676         td->files = malloc(org->files_index * sizeof(f));
1677
1678         if (td->o.file_lock_mode != FILE_LOCK_NONE)
1679                 td->file_locks = malloc(org->files_index);
1680
1681         for_each_file(org, f, i) {
1682                 struct fio_file *__f;
1683
1684                 __f = alloc_new_file(td);
1685
1686                 if (f->file_name) {
1687                         __f->file_name = smalloc_strdup(f->file_name);
1688                         if (!__f->file_name)
1689                                 assert(0);
1690
1691                         __f->filetype = f->filetype;
1692                 }
1693
1694                 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1695                         __f->lock = f->lock;
1696                 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1697                         __f->rwlock = f->rwlock;
1698
1699                 td->files[i] = __f;
1700         }
1701 }
1702
1703 /*
1704  * Returns the index that matches the filename, or -1 if not there
1705  */
1706 int get_fileno(struct thread_data *td, const char *fname)
1707 {
1708         struct fio_file *f;
1709         unsigned int i;
1710
1711         for_each_file(td, f, i)
1712                 if (!strcmp(f->file_name, fname))
1713                         return i;
1714
1715         return -1;
1716 }
1717
1718 /*
1719  * For log usage, where we add/open/close files automatically
1720  */
1721 void free_release_files(struct thread_data *td)
1722 {
1723         close_files(td);
1724         td->o.nr_files = 0;
1725         td->o.open_files = 0;
1726         td->files_index = 0;
1727         td->nr_normal_files = 0;
1728 }
1729
1730 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1731 {
1732         int i;
1733
1734         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1735                 f->last_pos[i] = f->file_offset;
1736                 f->last_start[i] = -1ULL;
1737         }
1738
1739         if (fio_file_axmap(f))
1740                 axmap_reset(f->io_axmap);
1741         else if (fio_file_lfsr(f))
1742                 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1743 }
1744
1745 bool fio_files_done(struct thread_data *td)
1746 {
1747         struct fio_file *f;
1748         unsigned int i;
1749
1750         for_each_file(td, f, i)
1751                 if (!fio_file_done(f))
1752                         return false;
1753
1754         return true;
1755 }
1756
1757 /* free memory used in initialization phase only */
1758 void filesetup_mem_free(void)
1759 {
1760         free_already_allocated();
1761 }