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