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 | |
2fd233b7 | 42 | if (td->filetype != FIO_TYPE_FILE) |
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 | ||
186 | if (td->overwrite) { | |
187 | if (fstat(f->fd, &st) == -1) { | |
e1161c32 | 188 | td_verror(td, errno, "fstat"); |
53cdc686 JA |
189 | return 1; |
190 | } | |
191 | ||
192 | f->real_file_size = st.st_size; | |
193 | ||
194 | if (!f->file_size || f->file_size > f->real_file_size) | |
195 | f->file_size = f->real_file_size; | |
745508dd JA |
196 | } else |
197 | f->real_file_size = f->file_size; | |
53cdc686 | 198 | |
53cdc686 JA |
199 | return 0; |
200 | } | |
201 | ||
202 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
203 | { | |
204 | unsigned long long bytes; | |
205 | int r; | |
206 | ||
207 | r = blockdev_size(f->fd, &bytes); | |
208 | if (r) { | |
e1161c32 | 209 | td_verror(td, r, "blockdev_size"); |
53cdc686 JA |
210 | return 1; |
211 | } | |
212 | ||
213 | f->real_file_size = bytes; | |
214 | ||
215 | /* | |
216 | * no extend possibilities, so limit size to device size if too large | |
217 | */ | |
218 | if (!f->file_size || f->file_size > f->real_file_size) | |
219 | f->file_size = f->real_file_size; | |
220 | ||
221 | f->file_size -= f->file_offset; | |
222 | return 0; | |
223 | } | |
224 | ||
225 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
226 | { | |
227 | int ret = 0; | |
228 | ||
229 | if (td->filetype == FIO_TYPE_FILE) | |
230 | ret = file_size(td, f); | |
231 | else if (td->filetype == FIO_TYPE_BD) | |
232 | ret = bdev_size(td, f); | |
233 | else | |
234 | f->real_file_size = -1; | |
235 | ||
236 | if (ret) | |
237 | return ret; | |
238 | ||
239 | if (f->file_offset > f->real_file_size) { | |
240 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); | |
241 | return 1; | |
242 | } | |
243 | ||
53cdc686 JA |
244 | return 0; |
245 | } | |
246 | ||
e5b401d4 JA |
247 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
248 | { | |
249 | int ret = 0; | |
250 | ||
251 | /* | |
252 | * FIXME: add blockdev flushing too | |
253 | */ | |
254 | if (td->io_ops->flags & FIO_MMAPIO) | |
255 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); | |
ad2da605 JA |
256 | else if (td->filetype == FIO_TYPE_FILE) { |
257 | if (!td->odirect) | |
258 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); | |
259 | } else if (td->filetype == FIO_TYPE_BD) { | |
260 | if (!td->odirect) | |
261 | ret = blockdev_invalidate_cache(f->fd); | |
262 | } else if (td->filetype == FIO_TYPE_CHAR) | |
e5b401d4 JA |
263 | ret = 0; |
264 | ||
265 | if (ret < 0) { | |
e1161c32 | 266 | td_verror(td, errno, "invalidate_cache"); |
e5b401d4 JA |
267 | return 1; |
268 | } | |
269 | ||
ad2da605 | 270 | return ret; |
e5b401d4 JA |
271 | } |
272 | ||
53cdc686 JA |
273 | static int __setup_file_mmap(struct thread_data *td, struct fio_file *f) |
274 | { | |
275 | int flags; | |
276 | ||
277 | if (td_rw(td)) | |
278 | flags = PROT_READ | PROT_WRITE; | |
279 | else if (td_write(td)) { | |
280 | flags = PROT_WRITE; | |
281 | ||
282 | if (td->verify != VERIFY_NONE) | |
283 | flags |= PROT_READ; | |
284 | } else | |
285 | flags = PROT_READ; | |
286 | ||
287 | f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset); | |
288 | if (f->mmap == MAP_FAILED) { | |
289 | f->mmap = NULL; | |
e1161c32 | 290 | td_verror(td, errno, "mmap"); |
53cdc686 JA |
291 | return 1; |
292 | } | |
293 | ||
e5b401d4 JA |
294 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
295 | return 1; | |
53cdc686 | 296 | |
413dd459 | 297 | if (!td_random(td)) { |
53cdc686 | 298 | if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) { |
e1161c32 | 299 | td_verror(td, errno, "madvise"); |
53cdc686 JA |
300 | return 1; |
301 | } | |
302 | } else { | |
303 | if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) { | |
e1161c32 | 304 | td_verror(td, errno, "madvise"); |
53cdc686 JA |
305 | return 1; |
306 | } | |
307 | } | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | static int setup_files_mmap(struct thread_data *td) | |
313 | { | |
314 | struct fio_file *f; | |
315 | int i, err = 0; | |
316 | ||
317 | for_each_file(td, f, i) { | |
318 | err = __setup_file_mmap(td, f); | |
319 | if (err) | |
320 | break; | |
321 | } | |
322 | ||
323 | return err; | |
324 | } | |
325 | ||
326 | static int __setup_file_plain(struct thread_data *td, struct fio_file *f) | |
327 | { | |
e5b401d4 JA |
328 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
329 | return 1; | |
53cdc686 | 330 | |
413dd459 | 331 | if (!td_random(td)) { |
53cdc686 | 332 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { |
e1161c32 | 333 | td_verror(td, errno, "fadvise"); |
53cdc686 JA |
334 | return 1; |
335 | } | |
336 | } else { | |
337 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { | |
e1161c32 | 338 | td_verror(td, errno, "fadvise"); |
53cdc686 JA |
339 | return 1; |
340 | } | |
341 | } | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
346 | static int setup_files_plain(struct thread_data *td) | |
347 | { | |
348 | struct fio_file *f; | |
349 | int i, err = 0; | |
350 | ||
351 | for_each_file(td, f, i) { | |
352 | err = __setup_file_plain(td, f); | |
353 | if (err) | |
354 | break; | |
355 | } | |
356 | ||
357 | return err; | |
358 | } | |
359 | ||
360 | static int setup_file(struct thread_data *td, struct fio_file *f) | |
361 | { | |
53cdc686 JA |
362 | int flags = 0; |
363 | ||
a9defc9a | 364 | if (td->io_ops->flags & FIO_SELFOPEN) |
ed92ac0c | 365 | return 0; |
53cdc686 | 366 | |
2fd233b7 JA |
367 | if (td->odirect) |
368 | flags |= OS_O_DIRECT; | |
369 | if (td->sync_io) | |
370 | flags |= O_SYNC; | |
53cdc686 | 371 | |
2fd233b7 JA |
372 | if (td_write(td) || td_rw(td)) { |
373 | flags |= O_RDWR; | |
53cdc686 | 374 | |
2fd233b7 JA |
375 | if (td->filetype == FIO_TYPE_FILE) { |
376 | if (!td->overwrite) | |
377 | flags |= O_TRUNC; | |
53cdc686 | 378 | |
2fd233b7 | 379 | flags |= O_CREAT; |
4d9345ae | 380 | } |
2fd233b7 JA |
381 | |
382 | open_file(td, f, flags, 0600); | |
383 | } else { | |
384 | if (td->filetype == FIO_TYPE_CHAR) | |
385 | flags |= O_RDWR; | |
386 | else | |
387 | flags |= O_RDONLY; | |
388 | ||
389 | open_file(td, f, flags, 0); | |
53cdc686 JA |
390 | } |
391 | ||
392 | if (f->fd == -1) { | |
e1161c32 JA |
393 | int __e = errno; |
394 | ||
395 | td_verror(td, __e, "open"); | |
396 | if (__e == EINVAL && td->odirect) | |
9d80e114 | 397 | log_err("fio: destination does not support O_DIRECT\n"); |
53cdc686 JA |
398 | return 1; |
399 | } | |
400 | ||
bdb4e2e9 JA |
401 | if (get_file_size(td, f)) { |
402 | close_file(td, f); | |
53cdc686 | 403 | return 1; |
bdb4e2e9 | 404 | } |
53cdc686 JA |
405 | |
406 | return 0; | |
407 | } | |
408 | ||
21972cde JA |
409 | int open_files(struct thread_data *td) |
410 | { | |
411 | struct fio_file *f; | |
412 | int i, err = 0; | |
413 | ||
414 | for_each_file(td, f, i) { | |
415 | err = setup_file(td, f); | |
416 | if (err) | |
417 | break; | |
418 | } | |
419 | ||
7abf833d JA |
420 | if (!err) |
421 | return 0; | |
422 | ||
bdb4e2e9 JA |
423 | for_each_file(td, f, i) |
424 | close_file(td, f); | |
7abf833d | 425 | |
21972cde JA |
426 | return err; |
427 | } | |
428 | ||
53cdc686 JA |
429 | int setup_files(struct thread_data *td) |
430 | { | |
431 | struct fio_file *f; | |
21972cde | 432 | int err, i; |
53cdc686 JA |
433 | |
434 | /* | |
435 | * if ioengine defines a setup() method, it's responsible for | |
436 | * setting up everything in the td->files[] area. | |
437 | */ | |
438 | if (td->io_ops->setup) | |
439 | return td->io_ops->setup(td); | |
440 | ||
441 | if (create_files(td)) | |
442 | return 1; | |
443 | ||
21972cde | 444 | err = open_files(td); |
f1027063 JA |
445 | if (err) |
446 | return err; | |
447 | ||
0a7eb121 JA |
448 | /* |
449 | * Recalculate the total file size now that files are set up. | |
450 | */ | |
451 | td->total_file_size = 0; | |
452 | for_each_file(td, f, i) | |
453 | td->total_file_size += f->file_size; | |
454 | ||
f1027063 | 455 | td->io_size = td->total_file_size; |
53cdc686 JA |
456 | if (td->io_size == 0) { |
457 | log_err("%s: no io blocks\n", td->name); | |
e1161c32 | 458 | td_verror(td, EINVAL, "total_file_size"); |
53cdc686 JA |
459 | return 1; |
460 | } | |
461 | ||
462 | if (!td->zone_size) | |
463 | td->zone_size = td->io_size; | |
464 | ||
465 | td->total_io_size = td->io_size * td->loops; | |
466 | ||
467 | if (td->io_ops->flags & FIO_MMAPIO) | |
21972cde | 468 | err = setup_files_mmap(td); |
53cdc686 | 469 | else |
21972cde JA |
470 | err = setup_files_plain(td); |
471 | ||
bdb4e2e9 JA |
472 | for_each_file(td, f, i) |
473 | close_file(td, f); | |
21972cde JA |
474 | |
475 | return err; | |
53cdc686 JA |
476 | } |
477 | ||
478 | void close_files(struct thread_data *td) | |
479 | { | |
0ab8db89 | 480 | struct fio_file *f; |
53cdc686 JA |
481 | int i; |
482 | ||
0ab8db89 | 483 | for_each_file(td, f, i) { |
9b031dc8 | 484 | if (!td->filename && f->unlink && |
02bcaa8c | 485 | td->filetype == FIO_TYPE_FILE) { |
132ad46d JA |
486 | unlink(f->file_name); |
487 | free(f->file_name); | |
488 | f->file_name = NULL; | |
489 | } | |
bdb4e2e9 JA |
490 | |
491 | close_file(td, f); | |
492 | ||
53cdc686 JA |
493 | if (f->mmap) { |
494 | munmap(f->mmap, f->file_size); | |
495 | f->mmap = NULL; | |
496 | } | |
497 | } | |
b4a6a59a | 498 | |
132ad46d | 499 | td->filename = NULL; |
b4a6a59a JA |
500 | free(td->files); |
501 | td->files = NULL; | |
502 | td->nr_files = 0; | |
53cdc686 | 503 | } |