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