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