filesetup.c

   1 #include <unistd.h>
   2 #include <fcntl.h>
   3 #include <string.h>
   4 #include <assert.h>
   5 #include <dirent.h>
   6 #include <sys/stat.h>
   7 #include <sys/mman.h>
   8 #include <sys/types.h>
   9
  10 #include "fio.h"
  11 #include "smalloc.h"
  12 #include "filehash.h"
  13
  14 static int root_warn;
  15
  16 /*
  17  * Leaves f->fd open on success, caller must close
  18  */
  19 static int extend_file(struct thread_data *td, struct fio_file *f)
  20 {
  21         int r, new_layout = 0, unlink_file = 0, flags;
  22         unsigned long long left;
  23         unsigned int bs;
  24         char *b;
  25
  26         if (read_only) {
  27                 log_err("fio: refusing extend of file due to read-only\n");
  28                 return 0;
  29         }
  30
  31         /*
  32          * check if we need to lay the file out complete again. fio
  33          * does that for operations involving reads, or for writes
  34          * where overwrite is set
  35          */
  36         if (td_read(td) || (td_write(td) && td->o.overwrite))
  37                 new_layout = 1;
  38         if (td_write(td) && !td->o.overwrite)
  39                 unlink_file = 1;
  40
  41         if (unlink_file || new_layout) {
  42                 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
  43                         td_verror(td, errno, "unlink");
  44                         return 1;
  45                 }
  46         }
  47
  48         flags = O_WRONLY | O_CREAT;
  49         if (new_layout)
  50                 flags |= O_TRUNC;
  51
  52         dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
  53         f->fd = open(f->file_name, flags, 0644);
  54         if (f->fd < 0) {
  55                 td_verror(td, errno, "open");
  56                 return 1;
  57         }
  58
  59         if (!new_layout)
  60                 goto done;
  61
  62         dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
  63                                                         f->real_file_size);
  64         if (ftruncate(f->fd, f->real_file_size) == -1) {
  65                 td_verror(td, errno, "ftruncate");
  66                 goto err;
  67         }
  68
  69         dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
  70                                                         f->real_file_size);
  71         if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
  72                 td_verror(td, errno, "posix_fallocate");
  73                 goto err;
  74         }
  75
  76         b = malloc(td->o.max_bs[DDIR_WRITE]);
  77         memset(b, 0, td->o.max_bs[DDIR_WRITE]);
  78
  79         left = f->real_file_size;
  80         while (left && !td->terminate) {
  81                 bs = td->o.max_bs[DDIR_WRITE];
  82                 if (bs > left)
  83                         bs = left;
  84
  85                 r = write(f->fd, b, bs);
  86
  87                 if (r == (int) bs) {
  88                         left -= bs;
  89                         continue;
  90                 } else {
  91                         if (r < 0)
  92                                 td_verror(td, errno, "write");
  93                         else
  94                                 td_verror(td, EIO, "write");
  95
  96                         break;
  97                 }
  98         }
  99
 100         if (td->terminate)
 101                 unlink(f->file_name);
 102         else if (td->o.create_fsync) {
 103                 if (fsync(f->fd) < 0) {
 104                         td_verror(td, errno, "fsync");
 105                         goto err;
 106                 }
 107         }
 108
 109         free(b);
 110 done:
 111         return 0;
 112 err:
 113         close(f->fd);
 114         f->fd = -1;
 115         return 1;
 116 }
 117
 118 static unsigned long long get_rand_file_size(struct thread_data *td)
 119 {
 120         unsigned long long ret, size_d;
 121         long r;
 122
 123         r = os_random_long(&td->file_size_state);
 124         size_d = td->o.file_size_high - td->o.file_size_low;
 125         ret = (unsigned long long) ((double) size_d * (r / (RAND_MAX + 1.0)));
 126         ret += td->o.file_size_low;
 127         ret -= (ret % td->o.rw_min_bs);
 128         return ret;
 129 }
 130
 131 static int file_size(struct thread_data *td, struct fio_file *f)
 132 {
 133         struct stat st;
 134
 135         if (fstat(f->fd, &st) == -1) {
 136                 td_verror(td, errno, "fstat");
 137                 return 1;
 138         }
 139
 140         f->real_file_size = st.st_size;
 141         return 0;
 142 }
 143
 144 static int bdev_size(struct thread_data *td, struct fio_file *f)
 145 {
 146         unsigned long long bytes;
 147         int r;
 148
 149         r = blockdev_size(f->fd, &bytes);
 150         if (r) {
 151                 td_verror(td, r, "blockdev_size");
 152                 return 1;
 153         }
 154
 155         f->real_file_size = bytes;
 156         return 0;
 157 }
 158
 159 static int get_file_size(struct thread_data *td, struct fio_file *f)
 160 {
 161         int ret = 0;
 162
 163         if (f->flags & FIO_SIZE_KNOWN)
 164                 return 0;
 165
 166         if (f->filetype == FIO_TYPE_FILE)
 167                 ret = file_size(td, f);
 168         else if (f->filetype == FIO_TYPE_BD)
 169                 ret = bdev_size(td, f);
 170         else
 171                 f->real_file_size = -1;
 172
 173         if (ret)
 174                 return ret;
 175
 176         if (f->file_offset > f->real_file_size) {
 177                 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
 178                                         f->file_offset, f->real_file_size);
 179                 return 1;
 180         }
 181
 182         f->flags |= FIO_SIZE_KNOWN;
 183         return 0;
 184 }
 185
 186 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
 187                                    unsigned long long off,
 188                                    unsigned long long len)
 189 {
 190         int ret = 0;
 191
 192         if (len == -1ULL)
 193                 len = f->io_size;
 194         if (off == -1ULL)
 195                 off = f->file_offset;
 196
 197         dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
 198                                                                 len);
 199
 200         /*
 201          * FIXME: add blockdev flushing too
 202          */
 203         if (f->mmap)
 204                 ret = madvise(f->mmap, len, MADV_DONTNEED);
 205         else if (f->filetype == FIO_TYPE_FILE) {
 206                 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
 207         } else if (f->filetype == FIO_TYPE_BD) {
 208                 ret = blockdev_invalidate_cache(f->fd);
 209                 if (ret < 0 && errno == EACCES && geteuid()) {
 210                         if (!root_warn) {
 211                                 log_err("fio: only root may flush block "
 212                                         "devices. Cache flush bypassed!\n");
 213                                 root_warn = 1;
 214                         }
 215                         ret = 0;
 216                 }
 217         } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 218                 ret = 0;
 219
 220         if (ret < 0) {
 221                 td_verror(td, errno, "invalidate_cache");
 222                 return 1;
 223         } else if (ret > 0) {
 224                 td_verror(td, ret, "invalidate_cache");
 225                 return 1;
 226         }
 227
 228         return ret;
 229
 230 }
 231
 232 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 233 {
 234         return __file_invalidate_cache(td, f, -1, -1);
 235 }
 236
 237 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 238 {
 239         int ret = 0;
 240
 241         dprint(FD_FILE, "fd close %s\n", f->file_name);
 242
 243         remove_file_hash(f);
 244
 245         if (close(f->fd) < 0)
 246                 ret = errno;
 247
 248         f->fd = -1;
 249         return ret;
 250 }
 251
 252 static int file_lookup_open(struct fio_file *f, int flags)
 253 {
 254         struct fio_file *__f;
 255         int from_hash;
 256
 257         __f = lookup_file_hash(f->file_name);
 258         if (__f) {
 259                 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
 260                 /*
 261                  * racy, need the __f->lock locked
 262                  */
 263                 f->lock = __f->lock;
 264                 f->lock_owner = __f->lock_owner;
 265                 f->lock_batch = __f->lock_batch;
 266                 f->lock_ddir = __f->lock_ddir;
 267                 from_hash = 1;
 268         } else {
 269                 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
 270                 from_hash = 0;
 271         }
 272
 273         f->fd = open(f->file_name, flags, 0600);
 274         return from_hash;
 275 }
 276
 277 int generic_open_file(struct thread_data *td, struct fio_file *f)
 278 {
 279         int is_std = 0;
 280         int flags = 0;
 281         int from_hash = 0;
 282
 283         dprint(FD_FILE, "fd open %s\n", f->file_name);
 284
 285         if (!strcmp(f->file_name, "-")) {
 286                 if (td_rw(td)) {
 287                         log_err("fio: can't read/write to stdin/out\n");
 288                         return 1;
 289                 }
 290                 is_std = 1;
 291
 292                 /*
 293                  * move output logging to stderr, if we are writing to stdout
 294                  */
 295                 if (td_write(td))
 296                         f_out = stderr;
 297         }
 298
 299         if (td->o.odirect)
 300                 flags |= OS_O_DIRECT;
 301         if (td->o.sync_io)
 302                 flags |= O_SYNC;
 303         if (f->filetype != FIO_TYPE_FILE)
 304                 flags |= O_NOATIME;
 305
 306 open_again:
 307         if (td_write(td)) {
 308                 if (!read_only)
 309                         flags |= O_RDWR;
 310
 311                 if (f->filetype == FIO_TYPE_FILE)
 312                         flags |= O_CREAT;
 313
 314                 if (is_std)
 315                         f->fd = dup(STDOUT_FILENO);
 316                 else
 317                         from_hash = file_lookup_open(f, flags);
 318         } else {
 319                 if (f->filetype == FIO_TYPE_CHAR && !read_only)
 320                         flags |= O_RDWR;
 321                 else
 322                         flags |= O_RDONLY;
 323
 324                 if (is_std)
 325                         f->fd = dup(STDIN_FILENO);
 326                 else
 327                         from_hash = file_lookup_open(f, flags);
 328         }
 329
 330         if (f->fd == -1) {
 331                 char buf[FIO_VERROR_SIZE];
 332                 int __e = errno;
 333
 334                 if (errno == EPERM && (flags & O_NOATIME)) {
 335                         flags &= ~O_NOATIME;
 336                         goto open_again;
 337                 }
 338
 339                 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
 340
 341                 td_verror(td, __e, buf);
 342         }
 343
 344         if (get_file_size(td, f))
 345                 goto err;
 346
 347         if (!from_hash && f->fd != -1) {
 348                 if (add_file_hash(f)) {
 349                         int ret;
 350
 351                         /*
 352                          * OK to ignore, we haven't done anything with it
 353                          */
 354                         ret = generic_close_file(td, f);
 355                         goto open_again;
 356                 }
 357         }
 358
 359         return 0;
 360 err:
 361         close(f->fd);
 362         return 1;
 363 }
 364
 365 int open_files(struct thread_data *td)
 366 {
 367         struct fio_file *f;
 368         unsigned int i;
 369         int err = 0;
 370
 371         dprint(FD_FILE, "open files\n");
 372
 373         for_each_file(td, f, i) {
 374                 err = td_io_open_file(td, f);
 375                 if (err) {
 376                         if (td->error == EMFILE) {
 377                                 log_err("fio: limited open files to: %d\n",
 378                                                         td->nr_open_files);
 379                                 td->o.open_files = td->nr_open_files;
 380                                 err = 0;
 381                                 clear_error(td);
 382                         }
 383                         break;
 384                 }
 385
 386                 if (td->o.open_files == td->nr_open_files)
 387                         break;
 388         }
 389
 390         if (!err)
 391                 return 0;
 392
 393         for_each_file(td, f, i)
 394                 td_io_close_file(td, f);
 395
 396         return err;
 397 }
 398
 399 /*
 400  * open/close all files, so that ->real_file_size gets set
 401  */
 402 static int get_file_sizes(struct thread_data *td)
 403 {
 404         struct fio_file *f;
 405         unsigned int i;
 406         int err = 0;
 407
 408         for_each_file(td, f, i) {
 409                 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
 410                                                                 f->file_name);
 411
 412                 if (td->io_ops->open_file(td, f)) {
 413                         if (td->error != ENOENT) {
 414                                 log_err("%s\n", td->verror);
 415                                 err = 1;
 416                         }
 417                         clear_error(td);
 418                 } else {
 419                         if (td->io_ops->close_file)
 420                                 td->io_ops->close_file(td, f);
 421                 }
 422
 423                 if (f->real_file_size == -1ULL && td->o.size)
 424                         f->real_file_size = td->o.size / td->o.nr_files;
 425         }
 426
 427         return err;
 428 }
 429
 430 /*
 431  * Open the files and setup files sizes, creating files if necessary.
 432  */
 433 int setup_files(struct thread_data *td)
 434 {
 435         unsigned long long total_size, extend_size;
 436         struct fio_file *f;
 437         unsigned int i;
 438         int err = 0, need_extend;
 439
 440         dprint(FD_FILE, "setup files\n");
 441
 442         if (td->o.read_iolog_file)
 443                 return 0;
 444
 445         /*
 446          * if ioengine defines a setup() method, it's responsible for
 447          * opening the files and setting f->real_file_size to indicate
 448          * the valid range for that file.
 449          */
 450         if (td->io_ops->setup)
 451                 err = td->io_ops->setup(td);
 452         else
 453                 err = get_file_sizes(td);
 454
 455         if (err)
 456                 return err;
 457
 458         /*
 459          * check sizes. if the files/devices do not exist and the size
 460          * isn't passed to fio, abort.
 461          */
 462         total_size = 0;
 463         for_each_file(td, f, i) {
 464                 if (f->real_file_size == -1ULL)
 465                         total_size = -1ULL;
 466                 else
 467                         total_size += f->real_file_size;
 468         }
 469
 470         /*
 471          * device/file sizes are zero and no size given, punt
 472          */
 473         if ((!total_size || total_size == -1ULL) && !td->o.size &&
 474             !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
 475                 log_err("%s: you need to specify size=\n", td->o.name);
 476                 td_verror(td, EINVAL, "total_file_size");
 477                 return 1;
 478         }
 479
 480         /*
 481          * now file sizes are known, so we can set ->io_size. if size= is
 482          * not given, ->io_size is just equal to ->real_file_size. if size
 483          * is given, ->io_size is size / nr_files.
 484          */
 485         extend_size = total_size = 0;
 486         need_extend = 0;
 487         for_each_file(td, f, i) {
 488                 f->file_offset = td->o.start_offset;
 489
 490                 if (!td->o.file_size_low) {
 491                         /*
 492                          * no file size range given, file size is equal to
 493                          * total size divided by number of files. if that is
 494                          * zero, set it to the real file size.
 495                          */
 496                         f->io_size = td->o.size / td->o.nr_files;
 497                         if (!f->io_size)
 498                                 f->io_size = f->real_file_size - f->file_offset;
 499                 } else if (f->real_file_size < td->o.file_size_low ||
 500                            f->real_file_size > td->o.file_size_high) {
 501                         if (f->file_offset > td->o.file_size_low)
 502                                 goto err_offset;
 503                         /*
 504                          * file size given. if it's fixed, use that. if it's a
 505                          * range, generate a random size in-between.
 506                          */
 507                         if (td->o.file_size_low == td->o.file_size_high) {
 508                                 f->io_size = td->o.file_size_low
 509                                                 - f->file_offset;
 510                         } else {
 511                                 f->io_size = get_rand_file_size(td)
 512                                                 - f->file_offset;
 513                         }
 514                 } else
 515                         f->io_size = f->real_file_size - f->file_offset;
 516
 517                 if (f->io_size == -1ULL)
 518                         total_size = -1ULL;
 519                 else
 520                         total_size += f->io_size;
 521
 522                 if (f->filetype == FIO_TYPE_FILE &&
 523                     (f->io_size + f->file_offset) > f->real_file_size &&
 524                     !(td->io_ops->flags & FIO_DISKLESSIO)) {
 525                         need_extend++;
 526                         extend_size += (f->io_size + f->file_offset);
 527                         f->flags |= FIO_FILE_EXTEND;
 528                 }
 529         }
 530
 531         if (!td->o.size || td->o.size > total_size)
 532                 td->o.size = total_size;
 533
 534         /*
 535          * See if we need to extend some files
 536          */
 537         if (need_extend) {
 538                 temp_stall_ts = 1;
 539                 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
 540                         td->o.name, need_extend, extend_size >> 20);
 541
 542                 for_each_file(td, f, i) {
 543                         unsigned long long old_len, extend_len;
 544
 545                         if (!(f->flags & FIO_FILE_EXTEND))
 546                                 continue;
 547
 548                         assert(f->filetype == FIO_TYPE_FILE);
 549                         f->flags &= ~FIO_FILE_EXTEND;
 550                         old_len = f->real_file_size;
 551                         extend_len = f->io_size + f->file_offset - old_len;
 552                         f->real_file_size = (f->io_size + f->file_offset);
 553                         err = extend_file(td, f);
 554                         if (err)
 555                                 break;
 556
 557                         err = __file_invalidate_cache(td, f, old_len,
 558                                                                 extend_len);
 559                         close(f->fd);
 560                         f->fd = -1;
 561                         if (err)
 562                                 break;
 563                 }
 564                 temp_stall_ts = 0;
 565         }
 566
 567         if (err)
 568                 return err;
 569
 570         if (!td->o.zone_size)
 571                 td->o.zone_size = td->o.size;
 572
 573         /*
 574          * iolog already set the total io size, if we read back
 575          * stored entries.
 576          */
 577         if (!td->o.read_iolog_file)
 578                 td->total_io_size = td->o.size * td->o.loops;
 579         return 0;
 580 err_offset:
 581         log_err("%s: you need to specify valid offset=\n", td->o.name);
 582         return 1;
 583 }
 584
 585 int init_random_map(struct thread_data *td)
 586 {
 587         unsigned long long blocks, num_maps;
 588         struct fio_file *f;
 589         unsigned int i;
 590
 591         if (td->o.norandommap || !td_random(td))
 592                 return 0;
 593
 594         for_each_file(td, f, i) {
 595                 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
 596                                 (unsigned long long) td->o.rw_min_bs;
 597                 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
 598                                 (unsigned long long) BLOCKS_PER_MAP;
 599                 f->file_map = smalloc(num_maps * sizeof(long));
 600                 if (!f->file_map) {
 601                         log_err("fio: failed allocating random map. If running"
 602                                 " a large number of jobs, try the 'norandommap'"
 603                                 " option\n");
 604                         return 1;
 605                 }
 606                 f->num_maps = num_maps;
 607         }
 608
 609         return 0;
 610 }
 611
 612 void close_files(struct thread_data *td)
 613 {
 614         struct fio_file *f;
 615         unsigned int i;
 616
 617         for_each_file(td, f, i)
 618                 td_io_close_file(td, f);
 619 }
 620
 621 void close_and_free_files(struct thread_data *td)
 622 {
 623         struct fio_file *f;
 624         unsigned int i;
 625
 626         dprint(FD_FILE, "close files\n");
 627
 628         for_each_file(td, f, i) {
 629                 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
 630                         unlink(f->file_name);
 631
 632                 td_io_close_file(td, f);
 633
 634                 sfree(f->file_name);
 635                 f->file_name = NULL;
 636
 637                 if (f->file_map) {
 638                         sfree(f->file_map);
 639                         f->file_map = NULL;
 640                 }
 641                 sfree(f);
 642         }
 643
 644         td->o.filename = NULL;
 645         free(td->files);
 646         td->files_index = 0;
 647         td->files = NULL;
 648         td->o.nr_files = 0;
 649 }
 650
 651 static void get_file_type(struct fio_file *f)
 652 {
 653         struct stat sb;
 654
 655         if (!strcmp(f->file_name, "-"))
 656                 f->filetype = FIO_TYPE_PIPE;
 657         else
 658                 f->filetype = FIO_TYPE_FILE;
 659
 660         if (!lstat(f->file_name, &sb)) {
 661                 if (S_ISBLK(sb.st_mode))
 662                         f->filetype = FIO_TYPE_BD;
 663                 else if (S_ISCHR(sb.st_mode))
 664                         f->filetype = FIO_TYPE_CHAR;
 665                 else if (S_ISFIFO(sb.st_mode))
 666                         f->filetype = FIO_TYPE_PIPE;
 667         }
 668 }
 669
 670 int add_file(struct thread_data *td, const char *fname)
 671 {
 672         int cur_files = td->files_index;
 673         char file_name[PATH_MAX];
 674         struct fio_file *f;
 675         int len = 0;
 676
 677         dprint(FD_FILE, "add file %s\n", fname);
 678
 679         f = smalloc(sizeof(*f));
 680         f->fd = -1;
 681
 682         dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
 683
 684         td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
 685         td->files[cur_files] = f;
 686
 687         /*
 688          * init function, io engine may not be loaded yet
 689          */
 690         if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
 691                 f->real_file_size = -1ULL;
 692
 693         if (td->o.directory)
 694                 len = sprintf(file_name, "%s/", td->o.directory);
 695
 696         sprintf(file_name + len, "%s", fname);
 697         f->file_name = smalloc_strdup(file_name);
 698
 699         get_file_type(f);
 700
 701         switch (td->o.file_lock_mode) {
 702         case FILE_LOCK_NONE:
 703                 break;
 704         case FILE_LOCK_READWRITE:
 705                 f->lock = fio_mutex_rw_init();
 706                 break;
 707         case FILE_LOCK_EXCLUSIVE:
 708                 f->lock = fio_mutex_init(1);
 709                 break;
 710         default:
 711                 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
 712                 assert(0);
 713         }
 714
 715         td->files_index++;
 716         if (f->filetype == FIO_TYPE_FILE)
 717                 td->nr_normal_files++;
 718
 719         dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
 720                                                         cur_files);
 721
 722         return cur_files;
 723 }
 724
 725 void get_file(struct fio_file *f)
 726 {
 727         dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
 728         assert(f->flags & FIO_FILE_OPEN);
 729         f->references++;
 730 }
 731
 732 int put_file(struct thread_data *td, struct fio_file *f)
 733 {
 734         int f_ret = 0, ret = 0;
 735
 736         dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
 737
 738         if (!(f->flags & FIO_FILE_OPEN))
 739                 return 0;
 740
 741         assert(f->references);
 742         if (--f->references)
 743                 return 0;
 744
 745         if (should_fsync(td) && td->o.fsync_on_close)
 746                 f_ret = fsync(f->fd);
 747
 748         if (td->io_ops->close_file)
 749                 ret = td->io_ops->close_file(td, f);
 750
 751         if (!ret)
 752                 ret = !f_ret;
 753
 754         td->nr_open_files--;
 755         f->flags &= ~FIO_FILE_OPEN;
 756         return ret;
 757 }
 758
 759 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
 760 {
 761         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 762                 return;
 763
 764         if (f->lock_owner == td && f->lock_batch--)
 765                 return;
 766
 767         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 768                 if (ddir == DDIR_READ)
 769                         fio_mutex_down_read(f->lock);
 770                 else
 771                         fio_mutex_down_write(f->lock);
 772         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
 773                 fio_mutex_down(f->lock);
 774
 775         f->lock_owner = td;
 776         f->lock_batch = td->o.lockfile_batch;
 777         f->lock_ddir = ddir;
 778 }
 779
 780 void unlock_file(struct thread_data *td, struct fio_file *f)
 781 {
 782         if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
 783                 return;
 784         if (f->lock_batch)
 785                 return;
 786
 787         if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
 788                 const int is_read = f->lock_ddir == DDIR_READ;
 789                 int val = fio_mutex_getval(f->lock);
 790
 791                 if ((is_read && val == 1) || (!is_read && val == -1))
 792                         f->lock_owner = NULL;
 793
 794                 if (is_read)
 795                         fio_mutex_up_read(f->lock);
 796                 else
 797                         fio_mutex_up_write(f->lock);
 798         } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
 799                 int val = fio_mutex_getval(f->lock);
 800
 801                 if (val == 0)
 802                         f->lock_owner = NULL;
 803
 804                 fio_mutex_up(f->lock);
 805         }
 806 }
 807
 808 void unlock_file_all(struct thread_data *td, struct fio_file *f)
 809 {
 810         if (f->lock_owner != td)
 811                 return;
 812
 813         f->lock_batch = 0;
 814         unlock_file(td, f);
 815 }
 816
 817 static int recurse_dir(struct thread_data *td, const char *dirname)
 818 {
 819         struct dirent *dir;
 820         int ret = 0;
 821         DIR *D;
 822
 823         D = opendir(dirname);
 824         if (!D) {
 825                 char buf[FIO_VERROR_SIZE];
 826
 827                 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
 828                 td_verror(td, errno, buf);
 829                 return 1;
 830         }
 831
 832         while ((dir = readdir(D)) != NULL) {
 833                 char full_path[PATH_MAX];
 834                 struct stat sb;
 835
 836                 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
 837                         continue;
 838
 839                 sprintf(full_path, "%s/%s", dirname, dir->d_name);
 840
 841                 if (lstat(full_path, &sb) == -1) {
 842                         if (errno != ENOENT) {
 843                                 td_verror(td, errno, "stat");
 844                                 return 1;
 845                         }
 846                 }
 847
 848                 if (S_ISREG(sb.st_mode)) {
 849                         add_file(td, full_path);
 850                         td->o.nr_files++;
 851                         continue;
 852                 }
 853                 if (!S_ISDIR(sb.st_mode))
 854                         continue;
 855
 856                 ret = recurse_dir(td, full_path);
 857                 if (ret)
 858                         break;
 859         }
 860
 861         closedir(D);
 862         return ret;
 863 }
 864
 865 int add_dir_files(struct thread_data *td, const char *path)
 866 {
 867         int ret = recurse_dir(td, path);
 868
 869         if (!ret)
 870                 log_info("fio: opendir added %d files\n", td->o.nr_files);
 871
 872         return ret;
 873 }
 874
 875 void dup_files(struct thread_data *td, struct thread_data *org)
 876 {
 877         struct fio_file *f;
 878         unsigned int i;
 879
 880         dprint(FD_FILE, "dup files: %d\n", org->files_index);
 881
 882         if (!org->files)
 883                 return;
 884
 885         td->files = malloc(org->files_index * sizeof(f));
 886
 887         for_each_file(org, f, i) {
 888                 struct fio_file *__f;
 889
 890                 __f = smalloc(sizeof(*__f));
 891
 892                 if (f->file_name)
 893                         __f->file_name = smalloc_strdup(f->file_name);
 894
 895                 td->files[i] = __f;
 896         }
 897 }
 898
 899 /*
 900  * Returns the index that matches the filename, or -1 if not there
 901  */
 902 int get_fileno(struct thread_data *td, const char *fname)
 903 {
 904         struct fio_file *f;
 905         unsigned int i;
 906
 907         for_each_file(td, f, i)
 908                 if (!strcmp(f->file_name, fname))
 909                         return i;
 910
 911         return -1;
 912 }
 913
 914 /*
 915  * For log usage, where we add/open/close files automatically
 916  */
 917 void free_release_files(struct thread_data *td)
 918 {
 919         close_files(td);
 920         td->files_index = 0;
 921         td->nr_normal_files = 0;
 922 }