Commit | Line | Data |
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53cdc686 JA |
1 | #include <unistd.h> |
2 | #include <fcntl.h> | |
3 | #include <string.h> | |
4 | #include <assert.h> | |
bbf6b540 | 5 | #include <dirent.h> |
53cdc686 JA |
6 | #include <sys/stat.h> |
7 | #include <sys/mman.h> | |
bbf6b540 | 8 | #include <sys/types.h> |
53cdc686 JA |
9 | |
10 | #include "fio.h" | |
11 | #include "os.h" | |
12 | ||
7bb48f84 | 13 | static int extend_file(struct thread_data *td, struct fio_file *f) |
25205e97 JA |
14 | { |
15 | unsigned long long left; | |
16 | unsigned int bs; | |
17 | char *b; | |
18 | int r; | |
b2a15192 | 19 | |
7bb48f84 JA |
20 | if (f->flags & FIO_FILE_EXISTS) { |
21 | if (unlink(f->file_name) < 0) { | |
22 | td_verror(td, errno, "unlink"); | |
23 | return 1; | |
24 | } | |
25 | } | |
26 | ||
53cdc686 JA |
27 | f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
28 | if (f->fd < 0) { | |
e1161c32 | 29 | td_verror(td, errno, "open"); |
53cdc686 JA |
30 | return 1; |
31 | } | |
32 | ||
7bb48f84 | 33 | if (ftruncate(f->fd, f->real_file_size) == -1) { |
e1161c32 | 34 | td_verror(td, errno, "ftruncate"); |
53cdc686 JA |
35 | goto err; |
36 | } | |
37 | ||
7bb48f84 | 38 | if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) { |
e1161c32 | 39 | td_verror(td, errno, "posix_fallocate"); |
40f8298c JA |
40 | goto err; |
41 | } | |
42 | ||
2dc1bbeb JA |
43 | b = malloc(td->o.max_bs[DDIR_WRITE]); |
44 | memset(b, 0, td->o.max_bs[DDIR_WRITE]); | |
53cdc686 | 45 | |
7bb48f84 | 46 | left = f->real_file_size; |
53cdc686 | 47 | while (left && !td->terminate) { |
2dc1bbeb | 48 | bs = td->o.max_bs[DDIR_WRITE]; |
53cdc686 JA |
49 | if (bs > left) |
50 | bs = left; | |
51 | ||
52 | r = write(f->fd, b, bs); | |
53 | ||
54 | if (r == (int) bs) { | |
55 | left -= bs; | |
56 | continue; | |
57 | } else { | |
58 | if (r < 0) | |
e1161c32 | 59 | td_verror(td, errno, "write"); |
53cdc686 | 60 | else |
e1161c32 | 61 | td_verror(td, EIO, "write"); |
53cdc686 JA |
62 | |
63 | break; | |
64 | } | |
65 | } | |
66 | ||
67 | if (td->terminate) | |
68 | unlink(f->file_name); | |
2dc1bbeb | 69 | else if (td->o.create_fsync) |
53cdc686 JA |
70 | fsync(f->fd); |
71 | ||
72 | free(b); | |
73 | close(f->fd); | |
74 | f->fd = -1; | |
75 | return 0; | |
76 | err: | |
77 | close(f->fd); | |
78 | f->fd = -1; | |
79 | return 1; | |
80 | } | |
81 | ||
7bb48f84 | 82 | static unsigned long long get_rand_file_size(struct thread_data *td) |
9c60ce64 | 83 | { |
9c60ce64 JA |
84 | unsigned long long ret; |
85 | long r; | |
86 | ||
9c60ce64 | 87 | r = os_random_long(&td->file_size_state); |
7bb48f84 | 88 | ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0))); |
2dc1bbeb | 89 | ret -= (ret % td->o.rw_min_bs); |
9c60ce64 JA |
90 | return ret; |
91 | } | |
92 | ||
53cdc686 JA |
93 | static int file_size(struct thread_data *td, struct fio_file *f) |
94 | { | |
95 | struct stat st; | |
96 | ||
7bb48f84 JA |
97 | if (fstat(f->fd, &st) == -1) { |
98 | td_verror(td, errno, "fstat"); | |
99 | return 1; | |
100 | } | |
53cdc686 | 101 | |
7bb48f84 | 102 | f->real_file_size = st.st_size; |
53cdc686 JA |
103 | return 0; |
104 | } | |
105 | ||
106 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
107 | { | |
108 | unsigned long long bytes; | |
109 | int r; | |
110 | ||
111 | r = blockdev_size(f->fd, &bytes); | |
112 | if (r) { | |
e1161c32 | 113 | td_verror(td, r, "blockdev_size"); |
53cdc686 JA |
114 | return 1; |
115 | } | |
116 | ||
117 | f->real_file_size = bytes; | |
53cdc686 JA |
118 | return 0; |
119 | } | |
120 | ||
121 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
122 | { | |
123 | int ret = 0; | |
124 | ||
7bb48f84 JA |
125 | if (f->filetype == FIO_TYPE_FILE) |
126 | ret = file_size(td, f); | |
127 | else if (f->filetype == FIO_TYPE_BD) | |
53cdc686 JA |
128 | ret = bdev_size(td, f); |
129 | else | |
130 | f->real_file_size = -1; | |
131 | ||
132 | if (ret) | |
133 | return ret; | |
134 | ||
135 | if (f->file_offset > f->real_file_size) { | |
2dc1bbeb | 136 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size); |
53cdc686 JA |
137 | return 1; |
138 | } | |
139 | ||
53cdc686 JA |
140 | return 0; |
141 | } | |
142 | ||
e5b401d4 JA |
143 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
144 | { | |
145 | int ret = 0; | |
146 | ||
2dc1bbeb | 147 | if (td->o.odirect) |
b5af8293 JA |
148 | return 0; |
149 | ||
e5b401d4 JA |
150 | /* |
151 | * FIXME: add blockdev flushing too | |
152 | */ | |
b5af8293 | 153 | if (f->mmap) |
7bb48f84 | 154 | ret = madvise(f->mmap, f->io_size, MADV_DONTNEED); |
467d1b6b | 155 | else if (f->filetype == FIO_TYPE_FILE) |
7bb48f84 | 156 | ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED); |
7e0e25c9 | 157 | else if (f->filetype == FIO_TYPE_BD) { |
b5af8293 | 158 | ret = blockdev_invalidate_cache(f->fd); |
7e0e25c9 JA |
159 | if (ret < 0 && errno == EACCES && geteuid()) { |
160 | log_err("fio: only root may flush block devices. Cache flush bypassed!\n"); | |
161 | ret = 0; | |
162 | } | |
163 | } else if (f->filetype == FIO_TYPE_CHAR) | |
e5b401d4 JA |
164 | ret = 0; |
165 | ||
166 | if (ret < 0) { | |
e1161c32 | 167 | td_verror(td, errno, "invalidate_cache"); |
e5b401d4 JA |
168 | return 1; |
169 | } | |
170 | ||
ad2da605 | 171 | return ret; |
e5b401d4 JA |
172 | } |
173 | ||
b5af8293 | 174 | void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
53cdc686 | 175 | { |
b5af8293 JA |
176 | close(f->fd); |
177 | f->fd = -1; | |
53cdc686 JA |
178 | } |
179 | ||
b5af8293 | 180 | int generic_open_file(struct thread_data *td, struct fio_file *f) |
53cdc686 | 181 | { |
53cdc686 JA |
182 | int flags = 0; |
183 | ||
2dc1bbeb | 184 | if (td->o.odirect) |
2fd233b7 | 185 | flags |= OS_O_DIRECT; |
2dc1bbeb | 186 | if (td->o.sync_io) |
2fd233b7 | 187 | flags |= O_SYNC; |
53cdc686 | 188 | |
2fd233b7 JA |
189 | if (td_write(td) || td_rw(td)) { |
190 | flags |= O_RDWR; | |
53cdc686 | 191 | |
af52b345 | 192 | if (f->filetype == FIO_TYPE_FILE) |
2fd233b7 | 193 | flags |= O_CREAT; |
2fd233b7 | 194 | |
b5af8293 | 195 | f->fd = open(f->file_name, flags, 0600); |
2fd233b7 | 196 | } else { |
af52b345 | 197 | if (f->filetype == FIO_TYPE_CHAR) |
2fd233b7 JA |
198 | flags |= O_RDWR; |
199 | else | |
200 | flags |= O_RDONLY; | |
201 | ||
b5af8293 | 202 | f->fd = open(f->file_name, flags); |
53cdc686 JA |
203 | } |
204 | ||
205 | if (f->fd == -1) { | |
e4e33258 | 206 | char buf[FIO_VERROR_SIZE]; |
e1161c32 JA |
207 | int __e = errno; |
208 | ||
e4e33258 JA |
209 | snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name); |
210 | ||
211 | td_verror(td, __e, buf); | |
53cdc686 JA |
212 | } |
213 | ||
b5af8293 JA |
214 | if (get_file_size(td, f)) |
215 | goto err; | |
216 | ||
53cdc686 | 217 | return 0; |
b5af8293 JA |
218 | err: |
219 | close(f->fd); | |
220 | return 1; | |
221 | } | |
222 | ||
21972cde JA |
223 | int open_files(struct thread_data *td) |
224 | { | |
225 | struct fio_file *f; | |
af52b345 JA |
226 | unsigned int i; |
227 | int err = 0; | |
21972cde JA |
228 | |
229 | for_each_file(td, f, i) { | |
b5af8293 | 230 | err = td_io_open_file(td, f); |
21972cde JA |
231 | if (err) |
232 | break; | |
b5af8293 | 233 | |
2dc1bbeb | 234 | if (td->o.open_files == td->nr_open_files) |
b5af8293 | 235 | break; |
21972cde JA |
236 | } |
237 | ||
7abf833d JA |
238 | if (!err) |
239 | return 0; | |
240 | ||
bdb4e2e9 | 241 | for_each_file(td, f, i) |
b5af8293 | 242 | td_io_close_file(td, f); |
7abf833d | 243 | |
21972cde JA |
244 | return err; |
245 | } | |
246 | ||
7bb48f84 JA |
247 | /* |
248 | * open/close all files, so that ->real_file_size gets set | |
249 | */ | |
250 | static int get_file_sizes(struct thread_data *td) | |
251 | { | |
252 | struct fio_file *f; | |
253 | unsigned int i; | |
254 | int err = 0; | |
255 | ||
256 | for_each_file(td, f, i) { | |
257 | err = td->io_ops->open_file(td, f); | |
258 | if (err) { | |
259 | td->error = 0; | |
260 | memset(td->verror, 0, sizeof(td->verror)); | |
261 | err = 0; | |
262 | continue; | |
263 | } | |
264 | ||
265 | td->io_ops->close_file(td, f); | |
266 | } | |
267 | ||
268 | return err; | |
269 | } | |
270 | ||
271 | /* | |
272 | * Open the files and setup files sizes, creating files if necessary. | |
273 | */ | |
53cdc686 JA |
274 | int setup_files(struct thread_data *td) |
275 | { | |
7bb48f84 | 276 | unsigned long long total_size, extend_size; |
53cdc686 | 277 | struct fio_file *f; |
af52b345 | 278 | unsigned int i; |
7bb48f84 | 279 | int err, need_extend; |
53cdc686 JA |
280 | |
281 | /* | |
282 | * if ioengine defines a setup() method, it's responsible for | |
7bb48f84 JA |
283 | * opening the files and setting f->real_file_size to indicate |
284 | * the valid range for that file. | |
53cdc686 JA |
285 | */ |
286 | if (td->io_ops->setup) | |
7bb48f84 JA |
287 | err = td->io_ops->setup(td); |
288 | else | |
289 | err = get_file_sizes(td); | |
53cdc686 | 290 | |
f1027063 JA |
291 | if (err) |
292 | return err; | |
293 | ||
0a7eb121 | 294 | /* |
7bb48f84 JA |
295 | * check sizes. if the files/devices do not exist and the size |
296 | * isn't passed to fio, abort. | |
0a7eb121 | 297 | */ |
7bb48f84 JA |
298 | total_size = 0; |
299 | for_each_file(td, f, i) { | |
300 | if (f->real_file_size == -1ULL) | |
301 | total_size = -1ULL; | |
302 | else | |
303 | total_size += f->real_file_size; | |
304 | } | |
0a7eb121 | 305 | |
7bb48f84 JA |
306 | /* |
307 | * device/file sizes are zero and no size given, punt | |
308 | */ | |
309 | if (!total_size && !td->o.size) { | |
310 | log_err("%s: you need to specify size=\n", td->o.name); | |
e1161c32 | 311 | td_verror(td, EINVAL, "total_file_size"); |
53cdc686 JA |
312 | return 1; |
313 | } | |
314 | ||
7bb48f84 JA |
315 | /* |
316 | * now file sizes are known, so we can set ->io_size. if size= is | |
317 | * not given, ->io_size is just equal to ->real_file_size. if size | |
318 | * is given, ->io_size is size / nr_files. | |
319 | */ | |
320 | extend_size = total_size = 0; | |
321 | need_extend = 0; | |
322 | for_each_file(td, f, i) { | |
323 | if (!td->o.file_size_low) { | |
324 | /* | |
325 | * no file size range given, file size is equal to | |
326 | * total size divided by number of files. if that is | |
327 | * zero, set it to the real file size. | |
328 | */ | |
329 | f->io_size = td->o.size / td->o.nr_files; | |
330 | if (!f->io_size) | |
331 | f->io_size = f->real_file_size; | |
332 | } else if (f->real_file_size < td->o.file_size_low || | |
333 | f->real_file_size > td->o.file_size_high) { | |
334 | /* | |
335 | * file size given. if it's fixed, use that. if it's a | |
336 | * range, generate a random size in-between. | |
337 | */ | |
338 | if (td->o.file_size_low == td->o.file_size_high) | |
339 | f->io_size = td->o.file_size_low; | |
340 | else | |
341 | f->io_size = get_rand_file_size(td); | |
342 | } else | |
343 | f->io_size = f->real_file_size; | |
53cdc686 | 344 | |
7bb48f84 JA |
345 | if (f->io_size == -1ULL) |
346 | total_size = -1ULL; | |
347 | else | |
348 | total_size += f->io_size; | |
349 | ||
350 | if (f->filetype == FIO_TYPE_FILE && | |
351 | f->io_size > f->real_file_size && | |
352 | !(td->io_ops->flags & FIO_DISKLESSIO)) { | |
353 | need_extend++; | |
354 | extend_size += f->io_size; | |
355 | f->flags |= FIO_FILE_EXTEND; | |
356 | } | |
357 | } | |
53cdc686 | 358 | |
7bb48f84 JA |
359 | if (!td->o.size) |
360 | td->o.size = total_size; | |
21972cde | 361 | |
7bb48f84 JA |
362 | /* |
363 | * See if we need to extend some files | |
364 | */ | |
365 | if (need_extend) { | |
366 | temp_stall_ts = 1; | |
367 | log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n", | |
368 | td->o.name, need_extend, extend_size >> 20); | |
369 | ||
370 | for_each_file(td, f, i) { | |
371 | if (!(f->flags & FIO_FILE_EXTEND)) | |
372 | continue; | |
373 | ||
374 | f->flags &= ~FIO_FILE_EXTEND; | |
375 | f->real_file_size = f->io_size; | |
376 | err = extend_file(td, f); | |
377 | if (err) | |
378 | break; | |
379 | } | |
380 | temp_stall_ts = 0; | |
381 | } | |
382 | ||
383 | if (err) | |
384 | return err; | |
385 | ||
386 | if (!td->o.zone_size) | |
387 | td->o.zone_size = td->o.size; | |
388 | ||
389 | td->total_io_size = td->o.size * td->o.loops; | |
390 | return 0; | |
53cdc686 JA |
391 | } |
392 | ||
68727076 JA |
393 | int init_random_map(struct thread_data *td) |
394 | { | |
395 | int num_maps, blocks; | |
396 | struct fio_file *f; | |
397 | unsigned int i; | |
398 | ||
399 | if (td->o.norandommap) | |
400 | return 0; | |
401 | ||
402 | for_each_file(td, f, i) { | |
403 | blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs; | |
404 | num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP; | |
405 | f->file_map = malloc(num_maps * sizeof(long)); | |
406 | if (!f->file_map) { | |
407 | log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n"); | |
408 | return 1; | |
409 | } | |
410 | f->num_maps = num_maps; | |
411 | memset(f->file_map, 0, num_maps * sizeof(long)); | |
412 | } | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
53cdc686 JA |
417 | void close_files(struct thread_data *td) |
418 | { | |
0ab8db89 | 419 | struct fio_file *f; |
af52b345 | 420 | unsigned int i; |
53cdc686 | 421 | |
0ab8db89 | 422 | for_each_file(td, f, i) { |
fa1da865 JA |
423 | if ((f->flags & FIO_FILE_UNLINK) && |
424 | f->filetype == FIO_TYPE_FILE) | |
132ad46d | 425 | unlink(f->file_name); |
bdb4e2e9 | 426 | |
b5af8293 | 427 | td_io_close_file(td, f); |
b3dc7f07 | 428 | |
fa1da865 JA |
429 | free(f->file_name); |
430 | f->file_name = NULL; | |
431 | ||
c343981b | 432 | if (f->file_map) { |
b3dc7f07 | 433 | free(f->file_map); |
c343981b JA |
434 | f->file_map = NULL; |
435 | } | |
53cdc686 | 436 | } |
b4a6a59a | 437 | |
2dc1bbeb | 438 | td->o.filename = NULL; |
cade3ef4 | 439 | free(td->files); |
b4a6a59a | 440 | td->files = NULL; |
2dc1bbeb | 441 | td->o.nr_files = 0; |
53cdc686 | 442 | } |
af52b345 | 443 | |
e3bab463 | 444 | static void get_file_type(struct fio_file *f) |
af52b345 JA |
445 | { |
446 | struct stat sb; | |
447 | ||
448 | f->filetype = FIO_TYPE_FILE; | |
449 | ||
e3bab463 | 450 | if (!lstat(f->file_name, &sb)) { |
af52b345 JA |
451 | if (S_ISBLK(sb.st_mode)) |
452 | f->filetype = FIO_TYPE_BD; | |
453 | else if (S_ISCHR(sb.st_mode)) | |
454 | f->filetype = FIO_TYPE_CHAR; | |
455 | } | |
456 | } | |
457 | ||
458 | void add_file(struct thread_data *td, const char *fname) | |
459 | { | |
7b4e4fe5 | 460 | int cur_files = td->files_index; |
bd0ee748 | 461 | char file_name[PATH_MAX]; |
af52b345 | 462 | struct fio_file *f; |
bd0ee748 | 463 | int len = 0; |
af52b345 JA |
464 | |
465 | td->files = realloc(td->files, (cur_files + 1) * sizeof(*f)); | |
466 | ||
467 | f = &td->files[cur_files]; | |
468 | memset(f, 0, sizeof(*f)); | |
469 | f->fd = -1; | |
bd0ee748 JA |
470 | |
471 | if (td->o.directory) | |
472 | len = sprintf(file_name, "%s/", td->o.directory); | |
473 | ||
474 | sprintf(file_name + len, "%s", fname); | |
475 | f->file_name = strdup(file_name); | |
af52b345 | 476 | |
e3bab463 | 477 | get_file_type(f); |
af52b345 | 478 | |
7b4e4fe5 | 479 | td->files_index++; |
1549441c JA |
480 | if (f->filetype == FIO_TYPE_FILE) |
481 | td->nr_normal_files++; | |
af52b345 | 482 | } |
0ad920e7 JA |
483 | |
484 | void get_file(struct fio_file *f) | |
485 | { | |
486 | f->references++; | |
487 | } | |
488 | ||
489 | void put_file(struct thread_data *td, struct fio_file *f) | |
490 | { | |
491 | if (!(f->flags & FIO_FILE_OPEN)) | |
492 | return; | |
493 | ||
494 | assert(f->references); | |
495 | if (--f->references) | |
496 | return; | |
497 | ||
2dc1bbeb | 498 | if (should_fsync(td) && td->o.fsync_on_close) |
ebb1415f JA |
499 | fsync(f->fd); |
500 | ||
0ad920e7 JA |
501 | if (td->io_ops->close_file) |
502 | td->io_ops->close_file(td, f); | |
503 | td->nr_open_files--; | |
504 | f->flags &= ~FIO_FILE_OPEN; | |
505 | } | |
bbf6b540 JA |
506 | |
507 | static int recurse_dir(struct thread_data *td, const char *dirname) | |
508 | { | |
509 | struct dirent *dir; | |
510 | int ret = 0; | |
511 | DIR *D; | |
512 | ||
513 | D = opendir(dirname); | |
514 | if (!D) { | |
515 | td_verror(td, errno, "opendir"); | |
516 | return 1; | |
517 | } | |
518 | ||
519 | while ((dir = readdir(D)) != NULL) { | |
520 | char full_path[PATH_MAX]; | |
521 | struct stat sb; | |
522 | ||
e85b2b83 JA |
523 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
524 | continue; | |
96d32d51 | 525 | |
bbf6b540 JA |
526 | sprintf(full_path, "%s/%s", dirname, dir->d_name); |
527 | ||
528 | if (lstat(full_path, &sb) == -1) { | |
529 | if (errno != ENOENT) { | |
530 | td_verror(td, errno, "stat"); | |
531 | return 1; | |
532 | } | |
533 | } | |
534 | ||
535 | if (S_ISREG(sb.st_mode)) { | |
536 | add_file(td, full_path); | |
2dc1bbeb | 537 | td->o.nr_files++; |
bbf6b540 JA |
538 | continue; |
539 | } | |
540 | ||
bbf6b540 JA |
541 | if ((ret = recurse_dir(td, full_path)) != 0) |
542 | break; | |
543 | } | |
544 | ||
545 | closedir(D); | |
546 | return ret; | |
547 | } | |
548 | ||
549 | int add_dir_files(struct thread_data *td, const char *path) | |
550 | { | |
551 | return recurse_dir(td, path); | |
552 | } | |
cade3ef4 JA |
553 | |
554 | void dup_files(struct thread_data *td, struct thread_data *org) | |
555 | { | |
556 | struct fio_file *f; | |
557 | unsigned int i; | |
558 | size_t bytes; | |
559 | ||
560 | if (!org->files) | |
561 | return; | |
562 | ||
563 | bytes = org->files_index * sizeof(*f); | |
564 | td->files = malloc(bytes); | |
565 | memcpy(td->files, org->files, bytes); | |
566 | ||
567 | for_each_file(td, f, i) { | |
568 | if (f->file_name) | |
569 | f->file_name = strdup(f->file_name); | |
570 | } | |
571 | } |