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