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