Commit | Line | Data |
---|---|---|
53cdc686 JA |
1 | #include <unistd.h> |
2 | #include <fcntl.h> | |
3 | #include <string.h> | |
4 | #include <assert.h> | |
5 | #include <sys/stat.h> | |
6 | #include <sys/mman.h> | |
7 | ||
8 | #include "fio.h" | |
9 | #include "os.h" | |
10 | ||
bdb4e2e9 JA |
11 | int open_file(struct thread_data *td, struct fio_file *f, int flags, int perm) |
12 | { | |
13 | if (flags & O_CREAT) | |
14 | f->fd = open(f->file_name, flags, perm); | |
15 | else | |
16 | f->fd = open(f->file_name, flags); | |
17 | ||
18 | if (f->fd != -1) { | |
19 | td->nr_open_files++; | |
20 | return 0; | |
21 | } | |
22 | ||
23 | return 1; | |
24 | } | |
25 | ||
26 | void close_file(struct thread_data *td, struct fio_file *f) | |
27 | { | |
28 | if (f->fd != -1) { | |
29 | close(f->fd); | |
30 | f->fd = -1; | |
31 | td->nr_open_files--; | |
32 | } | |
33 | } | |
34 | ||
25205e97 JA |
35 | /* |
36 | * Check if the file exists and it's large enough. | |
37 | */ | |
38 | static int file_ok(struct thread_data *td, struct fio_file *f) | |
53cdc686 | 39 | { |
b2a15192 | 40 | struct stat st; |
53cdc686 | 41 | |
4d9345ae | 42 | if (td->filetype != FIO_TYPE_FILE || (td->io_ops->flags & FIO_NULLIO)) |
b2a15192 JA |
43 | return 0; |
44 | ||
fa01d139 | 45 | if (lstat(f->file_name, &st) == -1) |
25205e97 | 46 | return 1; |
fa01d139 JA |
47 | |
48 | /* | |
49 | * if it's a special file, size is always ok for now | |
50 | */ | |
51 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) | |
52 | return 0; | |
53 | if (st.st_size < (off_t) f->file_size) | |
25205e97 JA |
54 | return 1; |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static int create_file(struct thread_data *td, struct fio_file *f) | |
60 | { | |
61 | unsigned long long left; | |
62 | unsigned int bs; | |
63 | char *b; | |
64 | int r; | |
b2a15192 | 65 | |
53cdc686 JA |
66 | f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
67 | if (f->fd < 0) { | |
e1161c32 | 68 | td_verror(td, errno, "open"); |
53cdc686 JA |
69 | return 1; |
70 | } | |
71 | ||
72 | if (ftruncate(f->fd, f->file_size) == -1) { | |
e1161c32 | 73 | td_verror(td, errno, "ftruncate"); |
53cdc686 JA |
74 | goto err; |
75 | } | |
76 | ||
40f8298c | 77 | if (posix_fallocate(f->fd, 0, f->file_size) < 0) { |
e1161c32 | 78 | td_verror(td, errno, "posix_fallocate"); |
40f8298c JA |
79 | goto err; |
80 | } | |
81 | ||
a00735e6 JA |
82 | b = malloc(td->max_bs[DDIR_WRITE]); |
83 | memset(b, 0, td->max_bs[DDIR_WRITE]); | |
53cdc686 JA |
84 | |
85 | left = f->file_size; | |
86 | while (left && !td->terminate) { | |
a00735e6 | 87 | bs = td->max_bs[DDIR_WRITE]; |
53cdc686 JA |
88 | if (bs > left) |
89 | bs = left; | |
90 | ||
91 | r = write(f->fd, b, bs); | |
92 | ||
93 | if (r == (int) bs) { | |
94 | left -= bs; | |
95 | continue; | |
96 | } else { | |
97 | if (r < 0) | |
e1161c32 | 98 | td_verror(td, errno, "write"); |
53cdc686 | 99 | else |
e1161c32 | 100 | td_verror(td, EIO, "write"); |
53cdc686 JA |
101 | |
102 | break; | |
103 | } | |
104 | } | |
105 | ||
106 | if (td->terminate) | |
107 | unlink(f->file_name); | |
108 | else if (td->create_fsync) | |
109 | fsync(f->fd); | |
110 | ||
111 | free(b); | |
112 | close(f->fd); | |
113 | f->fd = -1; | |
114 | return 0; | |
115 | err: | |
116 | close(f->fd); | |
117 | f->fd = -1; | |
118 | return 1; | |
119 | } | |
120 | ||
121 | static int create_files(struct thread_data *td) | |
122 | { | |
123 | struct fio_file *f; | |
25205e97 | 124 | int i, err, need_create; |
53cdc686 | 125 | |
f697125a JA |
126 | for_each_file(td, f, i) |
127 | f->file_size = td->total_file_size / td->nr_files; | |
128 | ||
53cdc686 JA |
129 | /* |
130 | * unless specifically asked for overwrite, let normal io extend it | |
131 | */ | |
f697125a | 132 | if (!td->overwrite) |
53cdc686 | 133 | return 0; |
53cdc686 | 134 | |
25205e97 | 135 | need_create = 0; |
eff6861d JA |
136 | if (td->filetype == FIO_TYPE_FILE) { |
137 | for_each_file(td, f, i) { | |
138 | int file_there = !file_ok(td, f); | |
139 | ||
413dd459 | 140 | if (file_there && td_write(td) && !td->overwrite) { |
eff6861d JA |
141 | unlink(f->file_name); |
142 | file_there = 0; | |
143 | } | |
144 | ||
145 | need_create += !file_there; | |
146 | } | |
147 | } | |
25205e97 | 148 | |
25205e97 JA |
149 | if (!need_create) |
150 | return 0; | |
151 | ||
f1027063 JA |
152 | if (!td->total_file_size) { |
153 | log_err("Need size for create\n"); | |
e1161c32 | 154 | td_verror(td, EINVAL, "file_size"); |
f1027063 JA |
155 | return 1; |
156 | } | |
157 | ||
53cdc686 | 158 | temp_stall_ts = 1; |
1e97cce9 | 159 | fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n", |
13f8e2d2 JA |
160 | td->name, td->nr_uniq_files, |
161 | (td->total_file_size >> 20) / td->nr_uniq_files, | |
25205e97 | 162 | td->total_file_size >> 20); |
53cdc686 JA |
163 | |
164 | err = 0; | |
165 | for_each_file(td, f, i) { | |
9b031dc8 JA |
166 | /* |
167 | * Only unlink files that we created. | |
168 | */ | |
169 | f->unlink = 0; | |
25205e97 | 170 | if (file_ok(td, f)) { |
9b031dc8 | 171 | f->unlink = td->unlink; |
25205e97 JA |
172 | err = create_file(td, f); |
173 | if (err) | |
174 | break; | |
175 | } | |
53cdc686 JA |
176 | } |
177 | ||
178 | temp_stall_ts = 0; | |
179 | return err; | |
180 | } | |
181 | ||
182 | static int file_size(struct thread_data *td, struct fio_file *f) | |
183 | { | |
184 | struct stat st; | |
185 | ||
f4ee22ca JA |
186 | /* |
187 | * if we are not doing real io, just pretend the file is as large | |
188 | * as the size= given. this works fine with nrfiles > 1 as well, | |
189 | * we only really care about it being at least as big as size= | |
190 | */ | |
191 | if (td->io_ops->flags & FIO_NULLIO) { | |
192 | f->real_file_size = f->file_size = td->total_file_size; | |
193 | return 0; | |
194 | } | |
195 | ||
53cdc686 JA |
196 | if (td->overwrite) { |
197 | if (fstat(f->fd, &st) == -1) { | |
e1161c32 | 198 | td_verror(td, errno, "fstat"); |
53cdc686 JA |
199 | return 1; |
200 | } | |
201 | ||
202 | f->real_file_size = st.st_size; | |
203 | ||
204 | if (!f->file_size || f->file_size > f->real_file_size) | |
205 | f->file_size = f->real_file_size; | |
745508dd JA |
206 | } else |
207 | f->real_file_size = f->file_size; | |
53cdc686 | 208 | |
53cdc686 JA |
209 | return 0; |
210 | } | |
211 | ||
212 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
213 | { | |
214 | unsigned long long bytes; | |
215 | int r; | |
216 | ||
217 | r = blockdev_size(f->fd, &bytes); | |
218 | if (r) { | |
e1161c32 | 219 | td_verror(td, r, "blockdev_size"); |
53cdc686 JA |
220 | return 1; |
221 | } | |
222 | ||
223 | f->real_file_size = bytes; | |
224 | ||
225 | /* | |
226 | * no extend possibilities, so limit size to device size if too large | |
227 | */ | |
228 | if (!f->file_size || f->file_size > f->real_file_size) | |
229 | f->file_size = f->real_file_size; | |
230 | ||
231 | f->file_size -= f->file_offset; | |
232 | return 0; | |
233 | } | |
234 | ||
235 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
236 | { | |
237 | int ret = 0; | |
238 | ||
239 | if (td->filetype == FIO_TYPE_FILE) | |
240 | ret = file_size(td, f); | |
241 | else if (td->filetype == FIO_TYPE_BD) | |
242 | ret = bdev_size(td, f); | |
243 | else | |
244 | f->real_file_size = -1; | |
245 | ||
246 | if (ret) | |
247 | return ret; | |
248 | ||
249 | if (f->file_offset > f->real_file_size) { | |
250 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); | |
251 | return 1; | |
252 | } | |
253 | ||
53cdc686 JA |
254 | return 0; |
255 | } | |
256 | ||
e5b401d4 JA |
257 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
258 | { | |
259 | int ret = 0; | |
260 | ||
261 | /* | |
262 | * FIXME: add blockdev flushing too | |
263 | */ | |
264 | if (td->io_ops->flags & FIO_MMAPIO) | |
265 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); | |
ad2da605 JA |
266 | else if (td->filetype == FIO_TYPE_FILE) { |
267 | if (!td->odirect) | |
268 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); | |
269 | } else if (td->filetype == FIO_TYPE_BD) { | |
270 | if (!td->odirect) | |
271 | ret = blockdev_invalidate_cache(f->fd); | |
272 | } else if (td->filetype == FIO_TYPE_CHAR) | |
e5b401d4 JA |
273 | ret = 0; |
274 | ||
275 | if (ret < 0) { | |
e1161c32 | 276 | td_verror(td, errno, "invalidate_cache"); |
e5b401d4 JA |
277 | return 1; |
278 | } | |
279 | ||
ad2da605 | 280 | return ret; |
e5b401d4 JA |
281 | } |
282 | ||
53cdc686 JA |
283 | static int __setup_file_mmap(struct thread_data *td, struct fio_file *f) |
284 | { | |
285 | int flags; | |
286 | ||
287 | if (td_rw(td)) | |
288 | flags = PROT_READ | PROT_WRITE; | |
289 | else if (td_write(td)) { | |
290 | flags = PROT_WRITE; | |
291 | ||
292 | if (td->verify != VERIFY_NONE) | |
293 | flags |= PROT_READ; | |
294 | } else | |
295 | flags = PROT_READ; | |
296 | ||
297 | f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset); | |
298 | if (f->mmap == MAP_FAILED) { | |
299 | f->mmap = NULL; | |
e1161c32 | 300 | td_verror(td, errno, "mmap"); |
53cdc686 JA |
301 | return 1; |
302 | } | |
303 | ||
e5b401d4 JA |
304 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
305 | return 1; | |
53cdc686 | 306 | |
413dd459 | 307 | if (!td_random(td)) { |
53cdc686 | 308 | if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) { |
e1161c32 | 309 | td_verror(td, errno, "madvise"); |
53cdc686 JA |
310 | return 1; |
311 | } | |
312 | } else { | |
313 | if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) { | |
e1161c32 | 314 | td_verror(td, errno, "madvise"); |
53cdc686 JA |
315 | return 1; |
316 | } | |
317 | } | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | static int setup_files_mmap(struct thread_data *td) | |
323 | { | |
324 | struct fio_file *f; | |
325 | int i, err = 0; | |
326 | ||
327 | for_each_file(td, f, i) { | |
328 | err = __setup_file_mmap(td, f); | |
329 | if (err) | |
330 | break; | |
331 | } | |
332 | ||
333 | return err; | |
334 | } | |
335 | ||
336 | static int __setup_file_plain(struct thread_data *td, struct fio_file *f) | |
337 | { | |
e5b401d4 JA |
338 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
339 | return 1; | |
53cdc686 | 340 | |
413dd459 | 341 | if (!td_random(td)) { |
53cdc686 | 342 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { |
e1161c32 | 343 | td_verror(td, errno, "fadvise"); |
53cdc686 JA |
344 | return 1; |
345 | } | |
346 | } else { | |
347 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { | |
e1161c32 | 348 | td_verror(td, errno, "fadvise"); |
53cdc686 JA |
349 | return 1; |
350 | } | |
351 | } | |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
356 | static int setup_files_plain(struct thread_data *td) | |
357 | { | |
358 | struct fio_file *f; | |
359 | int i, err = 0; | |
360 | ||
361 | for_each_file(td, f, i) { | |
362 | err = __setup_file_plain(td, f); | |
363 | if (err) | |
364 | break; | |
365 | } | |
366 | ||
367 | return err; | |
368 | } | |
369 | ||
370 | static int setup_file(struct thread_data *td, struct fio_file *f) | |
371 | { | |
53cdc686 JA |
372 | int flags = 0; |
373 | ||
a9defc9a | 374 | if (td->io_ops->flags & FIO_SELFOPEN) |
ed92ac0c | 375 | return 0; |
53cdc686 | 376 | |
4d9345ae JA |
377 | /* |
378 | * we need a valid file descriptor, but don't create a real file. | |
379 | * lets just dup stdout, seems like a sensible approach. | |
380 | */ | |
381 | if (td->io_ops->flags & FIO_NULLIO) | |
382 | f->fd = dup(STDOUT_FILENO); | |
383 | else { | |
384 | if (td->odirect) | |
385 | flags |= OS_O_DIRECT; | |
386 | if (td->sync_io) | |
387 | flags |= O_SYNC; | |
388 | ||
389 | if (td_write(td) || td_rw(td)) { | |
390 | flags |= O_RDWR; | |
7abf833d | 391 | |
4d9345ae JA |
392 | if (td->filetype == FIO_TYPE_FILE) { |
393 | if (!td->overwrite) | |
394 | flags |= O_TRUNC; | |
53cdc686 | 395 | |
4d9345ae JA |
396 | flags |= O_CREAT; |
397 | } | |
53cdc686 | 398 | |
bdb4e2e9 | 399 | open_file(td, f, flags, 0600); |
4d9345ae JA |
400 | } else { |
401 | if (td->filetype == FIO_TYPE_CHAR) | |
402 | flags |= O_RDWR; | |
403 | else | |
404 | flags |= O_RDONLY; | |
53cdc686 | 405 | |
bdb4e2e9 | 406 | open_file(td, f, flags, 0); |
4d9345ae | 407 | } |
53cdc686 JA |
408 | } |
409 | ||
410 | if (f->fd == -1) { | |
e1161c32 JA |
411 | int __e = errno; |
412 | ||
413 | td_verror(td, __e, "open"); | |
414 | if (__e == EINVAL && td->odirect) | |
9d80e114 | 415 | log_err("fio: destination does not support O_DIRECT\n"); |
53cdc686 JA |
416 | return 1; |
417 | } | |
418 | ||
bdb4e2e9 JA |
419 | if (get_file_size(td, f)) { |
420 | close_file(td, f); | |
53cdc686 | 421 | return 1; |
bdb4e2e9 | 422 | } |
53cdc686 JA |
423 | |
424 | return 0; | |
425 | } | |
426 | ||
21972cde JA |
427 | int open_files(struct thread_data *td) |
428 | { | |
429 | struct fio_file *f; | |
430 | int i, err = 0; | |
431 | ||
432 | for_each_file(td, f, i) { | |
433 | err = setup_file(td, f); | |
434 | if (err) | |
435 | break; | |
436 | } | |
437 | ||
7abf833d JA |
438 | if (!err) |
439 | return 0; | |
440 | ||
bdb4e2e9 JA |
441 | for_each_file(td, f, i) |
442 | close_file(td, f); | |
7abf833d | 443 | |
21972cde JA |
444 | return err; |
445 | } | |
446 | ||
53cdc686 JA |
447 | int setup_files(struct thread_data *td) |
448 | { | |
449 | struct fio_file *f; | |
21972cde | 450 | int err, i; |
53cdc686 JA |
451 | |
452 | /* | |
453 | * if ioengine defines a setup() method, it's responsible for | |
454 | * setting up everything in the td->files[] area. | |
455 | */ | |
456 | if (td->io_ops->setup) | |
457 | return td->io_ops->setup(td); | |
458 | ||
459 | if (create_files(td)) | |
460 | return 1; | |
461 | ||
21972cde | 462 | err = open_files(td); |
f1027063 JA |
463 | if (err) |
464 | return err; | |
465 | ||
0a7eb121 JA |
466 | /* |
467 | * Recalculate the total file size now that files are set up. | |
468 | */ | |
469 | td->total_file_size = 0; | |
470 | for_each_file(td, f, i) | |
471 | td->total_file_size += f->file_size; | |
472 | ||
f1027063 | 473 | td->io_size = td->total_file_size; |
53cdc686 JA |
474 | if (td->io_size == 0) { |
475 | log_err("%s: no io blocks\n", td->name); | |
e1161c32 | 476 | td_verror(td, EINVAL, "total_file_size"); |
53cdc686 JA |
477 | return 1; |
478 | } | |
479 | ||
480 | if (!td->zone_size) | |
481 | td->zone_size = td->io_size; | |
482 | ||
483 | td->total_io_size = td->io_size * td->loops; | |
484 | ||
485 | if (td->io_ops->flags & FIO_MMAPIO) | |
21972cde | 486 | err = setup_files_mmap(td); |
53cdc686 | 487 | else |
21972cde JA |
488 | err = setup_files_plain(td); |
489 | ||
bdb4e2e9 JA |
490 | for_each_file(td, f, i) |
491 | close_file(td, f); | |
21972cde JA |
492 | |
493 | return err; | |
53cdc686 JA |
494 | } |
495 | ||
496 | void close_files(struct thread_data *td) | |
497 | { | |
0ab8db89 | 498 | struct fio_file *f; |
53cdc686 JA |
499 | int i; |
500 | ||
0ab8db89 | 501 | for_each_file(td, f, i) { |
9b031dc8 | 502 | if (!td->filename && f->unlink && |
02bcaa8c | 503 | td->filetype == FIO_TYPE_FILE) { |
132ad46d JA |
504 | unlink(f->file_name); |
505 | free(f->file_name); | |
506 | f->file_name = NULL; | |
507 | } | |
bdb4e2e9 JA |
508 | |
509 | close_file(td, f); | |
510 | ||
53cdc686 JA |
511 | if (f->mmap) { |
512 | munmap(f->mmap, f->file_size); | |
513 | f->mmap = NULL; | |
514 | } | |
515 | } | |
b4a6a59a | 516 | |
132ad46d | 517 | td->filename = NULL; |
b4a6a59a JA |
518 | free(td->files); |
519 | td->files = NULL; | |
520 | td->nr_files = 0; | |
53cdc686 | 521 | } |