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 | ||
25205e97 JA |
13 | /* |
14 | * Check if the file exists and it's large enough. | |
15 | */ | |
16 | static int file_ok(struct thread_data *td, struct fio_file *f) | |
53cdc686 | 17 | { |
b2a15192 | 18 | struct stat st; |
53cdc686 | 19 | |
af52b345 | 20 | if (f->filetype != FIO_TYPE_FILE || |
b5af8293 | 21 | (td->io_ops->flags & FIO_DISKLESSIO)) |
b2a15192 JA |
22 | return 0; |
23 | ||
fa01d139 | 24 | if (lstat(f->file_name, &st) == -1) |
25205e97 | 25 | return 1; |
fa01d139 JA |
26 | |
27 | /* | |
28 | * if it's a special file, size is always ok for now | |
29 | */ | |
30 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) | |
31 | return 0; | |
32 | if (st.st_size < (off_t) f->file_size) | |
25205e97 JA |
33 | return 1; |
34 | ||
35 | return 0; | |
36 | } | |
37 | ||
38 | static int create_file(struct thread_data *td, struct fio_file *f) | |
39 | { | |
40 | unsigned long long left; | |
41 | unsigned int bs; | |
42 | char *b; | |
43 | int r; | |
b2a15192 | 44 | |
53cdc686 JA |
45 | f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
46 | if (f->fd < 0) { | |
e1161c32 | 47 | td_verror(td, errno, "open"); |
53cdc686 JA |
48 | return 1; |
49 | } | |
50 | ||
51 | if (ftruncate(f->fd, f->file_size) == -1) { | |
e1161c32 | 52 | td_verror(td, errno, "ftruncate"); |
53cdc686 JA |
53 | goto err; |
54 | } | |
55 | ||
40f8298c | 56 | if (posix_fallocate(f->fd, 0, f->file_size) < 0) { |
e1161c32 | 57 | td_verror(td, errno, "posix_fallocate"); |
40f8298c JA |
58 | goto err; |
59 | } | |
60 | ||
a00735e6 JA |
61 | b = malloc(td->max_bs[DDIR_WRITE]); |
62 | memset(b, 0, td->max_bs[DDIR_WRITE]); | |
53cdc686 JA |
63 | |
64 | left = f->file_size; | |
65 | while (left && !td->terminate) { | |
a00735e6 | 66 | bs = td->max_bs[DDIR_WRITE]; |
53cdc686 JA |
67 | if (bs > left) |
68 | bs = left; | |
69 | ||
70 | r = write(f->fd, b, bs); | |
71 | ||
72 | if (r == (int) bs) { | |
73 | left -= bs; | |
74 | continue; | |
75 | } else { | |
76 | if (r < 0) | |
e1161c32 | 77 | td_verror(td, errno, "write"); |
53cdc686 | 78 | else |
e1161c32 | 79 | td_verror(td, EIO, "write"); |
53cdc686 JA |
80 | |
81 | break; | |
82 | } | |
83 | } | |
84 | ||
85 | if (td->terminate) | |
86 | unlink(f->file_name); | |
87 | else if (td->create_fsync) | |
88 | fsync(f->fd); | |
89 | ||
90 | free(b); | |
91 | close(f->fd); | |
92 | f->fd = -1; | |
93 | return 0; | |
94 | err: | |
95 | close(f->fd); | |
96 | f->fd = -1; | |
97 | return 1; | |
98 | } | |
99 | ||
100 | static int create_files(struct thread_data *td) | |
101 | { | |
102 | struct fio_file *f; | |
af52b345 | 103 | int err, need_create, can_extend; |
96d32d51 | 104 | unsigned long long total_file_size; |
e407bec2 | 105 | unsigned int i, new_files; |
53cdc686 | 106 | |
e407bec2 | 107 | new_files = 0; |
96d32d51 | 108 | total_file_size = td->total_file_size; |
1549441c | 109 | for_each_file(td, f, i) { |
96d32d51 JA |
110 | unsigned long long s; |
111 | ||
112 | f->file_offset = td->start_offset; | |
113 | ||
1549441c JA |
114 | if (f->filetype != FIO_TYPE_FILE) |
115 | continue; | |
116 | ||
96d32d51 JA |
117 | if (f->flags & FIO_FILE_EXISTS) { |
118 | s = f->file_size; | |
119 | if (s > total_file_size) | |
120 | s = total_file_size; | |
121 | ||
122 | total_file_size -= s; | |
e407bec2 JA |
123 | } else |
124 | new_files++; | |
1549441c | 125 | } |
f697125a | 126 | |
53cdc686 JA |
127 | /* |
128 | * unless specifically asked for overwrite, let normal io extend it | |
129 | */ | |
0263882a JA |
130 | can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND); |
131 | if (can_extend) | |
53cdc686 | 132 | return 0; |
53cdc686 | 133 | |
25205e97 | 134 | need_create = 0; |
af52b345 JA |
135 | for_each_file(td, f, i) { |
136 | int file_there; | |
137 | ||
138 | if (f->filetype != FIO_TYPE_FILE) | |
139 | continue; | |
96d32d51 JA |
140 | if (f->flags & FIO_FILE_EXISTS) |
141 | continue; | |
142 | ||
e407bec2 | 143 | f->file_size = total_file_size / new_files; |
eff6861d | 144 | |
af52b345 | 145 | file_there = !file_ok(td, f); |
eff6861d | 146 | |
af52b345 JA |
147 | if (file_there && td_write(td) && !td->overwrite) { |
148 | unlink(f->file_name); | |
149 | file_there = 0; | |
eff6861d | 150 | } |
af52b345 JA |
151 | |
152 | need_create += !file_there; | |
eff6861d | 153 | } |
25205e97 | 154 | |
25205e97 JA |
155 | if (!need_create) |
156 | return 0; | |
157 | ||
f1027063 JA |
158 | if (!td->total_file_size) { |
159 | log_err("Need size for create\n"); | |
e1161c32 | 160 | td_verror(td, EINVAL, "file_size"); |
f1027063 JA |
161 | return 1; |
162 | } | |
163 | ||
53cdc686 | 164 | temp_stall_ts = 1; |
1e97cce9 | 165 | fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n", |
e407bec2 JA |
166 | td->name, new_files, |
167 | (total_file_size >> 20) / new_files, | |
168 | total_file_size >> 20); | |
53cdc686 JA |
169 | |
170 | err = 0; | |
171 | for_each_file(td, f, i) { | |
9b031dc8 JA |
172 | /* |
173 | * Only unlink files that we created. | |
174 | */ | |
f11bd94d | 175 | f->flags &= ~FIO_FILE_UNLINK; |
25205e97 | 176 | if (file_ok(td, f)) { |
f11bd94d JA |
177 | if (td->unlink) |
178 | f->flags |= FIO_FILE_UNLINK; | |
179 | ||
25205e97 JA |
180 | err = create_file(td, f); |
181 | if (err) | |
182 | break; | |
183 | } | |
53cdc686 JA |
184 | } |
185 | ||
186 | temp_stall_ts = 0; | |
187 | return err; | |
188 | } | |
189 | ||
190 | static int file_size(struct thread_data *td, struct fio_file *f) | |
191 | { | |
192 | struct stat st; | |
193 | ||
194 | if (td->overwrite) { | |
195 | if (fstat(f->fd, &st) == -1) { | |
e1161c32 | 196 | td_verror(td, errno, "fstat"); |
53cdc686 JA |
197 | return 1; |
198 | } | |
199 | ||
200 | f->real_file_size = st.st_size; | |
201 | ||
202 | if (!f->file_size || f->file_size > f->real_file_size) | |
203 | f->file_size = f->real_file_size; | |
745508dd JA |
204 | } else |
205 | f->real_file_size = f->file_size; | |
53cdc686 | 206 | |
53cdc686 JA |
207 | return 0; |
208 | } | |
209 | ||
210 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
211 | { | |
212 | unsigned long long bytes; | |
213 | int r; | |
214 | ||
215 | r = blockdev_size(f->fd, &bytes); | |
216 | if (r) { | |
e1161c32 | 217 | td_verror(td, r, "blockdev_size"); |
53cdc686 JA |
218 | return 1; |
219 | } | |
220 | ||
221 | f->real_file_size = bytes; | |
222 | ||
223 | /* | |
224 | * no extend possibilities, so limit size to device size if too large | |
225 | */ | |
226 | if (!f->file_size || f->file_size > f->real_file_size) | |
227 | f->file_size = f->real_file_size; | |
228 | ||
229 | f->file_size -= f->file_offset; | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
234 | { | |
235 | int ret = 0; | |
236 | ||
96d32d51 JA |
237 | if (f->filetype == FIO_TYPE_FILE) { |
238 | if (!(f->flags & FIO_FILE_EXISTS)) | |
239 | ret = file_size(td, f); | |
240 | } else if (f->filetype == FIO_TYPE_BD) | |
53cdc686 JA |
241 | ret = bdev_size(td, f); |
242 | else | |
243 | f->real_file_size = -1; | |
244 | ||
245 | if (ret) | |
246 | return ret; | |
247 | ||
248 | if (f->file_offset > f->real_file_size) { | |
249 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); | |
250 | return 1; | |
251 | } | |
252 | ||
53cdc686 JA |
253 | return 0; |
254 | } | |
255 | ||
e5b401d4 JA |
256 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
257 | { | |
258 | int ret = 0; | |
259 | ||
da86ccb6 | 260 | if (td->odirect) |
b5af8293 JA |
261 | return 0; |
262 | ||
e5b401d4 JA |
263 | /* |
264 | * FIXME: add blockdev flushing too | |
265 | */ | |
b5af8293 | 266 | if (f->mmap) |
e5b401d4 | 267 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); |
af52b345 | 268 | else if (f->filetype == FIO_TYPE_FILE) { |
b5af8293 | 269 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); |
af52b345 | 270 | } else if (f->filetype == FIO_TYPE_BD) { |
b5af8293 | 271 | ret = blockdev_invalidate_cache(f->fd); |
af52b345 | 272 | } else if (f->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 | ||
b5af8293 | 283 | void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
53cdc686 | 284 | { |
b5af8293 JA |
285 | close(f->fd); |
286 | f->fd = -1; | |
53cdc686 JA |
287 | } |
288 | ||
b5af8293 | 289 | int generic_open_file(struct thread_data *td, struct fio_file *f) |
53cdc686 | 290 | { |
53cdc686 JA |
291 | int flags = 0; |
292 | ||
2fd233b7 JA |
293 | if (td->odirect) |
294 | flags |= OS_O_DIRECT; | |
295 | if (td->sync_io) | |
296 | flags |= O_SYNC; | |
53cdc686 | 297 | |
2fd233b7 JA |
298 | if (td_write(td) || td_rw(td)) { |
299 | flags |= O_RDWR; | |
53cdc686 | 300 | |
af52b345 | 301 | if (f->filetype == FIO_TYPE_FILE) |
2fd233b7 | 302 | flags |= O_CREAT; |
2fd233b7 | 303 | |
b5af8293 | 304 | f->fd = open(f->file_name, flags, 0600); |
2fd233b7 | 305 | } else { |
af52b345 | 306 | if (f->filetype == FIO_TYPE_CHAR) |
2fd233b7 JA |
307 | flags |= O_RDWR; |
308 | else | |
309 | flags |= O_RDONLY; | |
310 | ||
b5af8293 | 311 | f->fd = open(f->file_name, flags); |
53cdc686 JA |
312 | } |
313 | ||
314 | if (f->fd == -1) { | |
e1161c32 JA |
315 | int __e = errno; |
316 | ||
317 | td_verror(td, __e, "open"); | |
318 | if (__e == EINVAL && td->odirect) | |
9d80e114 | 319 | log_err("fio: destination does not support O_DIRECT\n"); |
8ab53873 JA |
320 | if (__e == EMFILE) |
321 | log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->nr_files); | |
53cdc686 JA |
322 | return 1; |
323 | } | |
324 | ||
b5af8293 JA |
325 | if (get_file_size(td, f)) |
326 | goto err; | |
327 | ||
0263882a | 328 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
b5af8293 JA |
329 | goto err; |
330 | ||
331 | if (!td_random(td)) { | |
332 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { | |
333 | td_verror(td, errno, "fadvise"); | |
334 | goto err; | |
335 | } | |
336 | } else { | |
337 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { | |
338 | td_verror(td, errno, "fadvise"); | |
339 | goto err; | |
340 | } | |
bdb4e2e9 | 341 | } |
53cdc686 JA |
342 | |
343 | return 0; | |
b5af8293 JA |
344 | err: |
345 | close(f->fd); | |
346 | return 1; | |
347 | } | |
348 | ||
21972cde JA |
349 | int open_files(struct thread_data *td) |
350 | { | |
351 | struct fio_file *f; | |
af52b345 JA |
352 | unsigned int i; |
353 | int err = 0; | |
21972cde JA |
354 | |
355 | for_each_file(td, f, i) { | |
b5af8293 | 356 | err = td_io_open_file(td, f); |
21972cde JA |
357 | if (err) |
358 | break; | |
b5af8293 JA |
359 | |
360 | if (td->open_files == td->nr_open_files) | |
361 | break; | |
21972cde JA |
362 | } |
363 | ||
7abf833d JA |
364 | if (!err) |
365 | return 0; | |
366 | ||
bdb4e2e9 | 367 | for_each_file(td, f, i) |
b5af8293 | 368 | td_io_close_file(td, f); |
7abf833d | 369 | |
21972cde JA |
370 | return err; |
371 | } | |
372 | ||
53cdc686 JA |
373 | int setup_files(struct thread_data *td) |
374 | { | |
375 | struct fio_file *f; | |
af52b345 JA |
376 | unsigned int i; |
377 | int err; | |
53cdc686 JA |
378 | |
379 | /* | |
380 | * if ioengine defines a setup() method, it's responsible for | |
381 | * setting up everything in the td->files[] area. | |
382 | */ | |
383 | if (td->io_ops->setup) | |
384 | return td->io_ops->setup(td); | |
385 | ||
386 | if (create_files(td)) | |
387 | return 1; | |
388 | ||
21972cde | 389 | err = open_files(td); |
f1027063 JA |
390 | if (err) |
391 | return err; | |
392 | ||
0a7eb121 JA |
393 | /* |
394 | * Recalculate the total file size now that files are set up. | |
395 | */ | |
396 | td->total_file_size = 0; | |
397 | for_each_file(td, f, i) | |
398 | td->total_file_size += f->file_size; | |
399 | ||
f1027063 | 400 | td->io_size = td->total_file_size; |
53cdc686 JA |
401 | if (td->io_size == 0) { |
402 | log_err("%s: no io blocks\n", td->name); | |
e1161c32 | 403 | td_verror(td, EINVAL, "total_file_size"); |
53cdc686 JA |
404 | return 1; |
405 | } | |
406 | ||
407 | if (!td->zone_size) | |
408 | td->zone_size = td->io_size; | |
409 | ||
410 | td->total_io_size = td->io_size * td->loops; | |
411 | ||
bdb4e2e9 | 412 | for_each_file(td, f, i) |
b5af8293 | 413 | td_io_close_file(td, f); |
21972cde JA |
414 | |
415 | return err; | |
53cdc686 JA |
416 | } |
417 | ||
418 | void close_files(struct thread_data *td) | |
419 | { | |
0ab8db89 | 420 | struct fio_file *f; |
af52b345 | 421 | unsigned int i; |
53cdc686 | 422 | |
0ab8db89 | 423 | for_each_file(td, f, i) { |
1315a68a | 424 | if (!f->file_name && (f->flags & FIO_FILE_UNLINK) && |
af52b345 | 425 | f->filetype == FIO_TYPE_FILE) { |
132ad46d | 426 | unlink(f->file_name); |
1315a68a | 427 | free(f->file_name); |
132ad46d JA |
428 | f->file_name = NULL; |
429 | } | |
bdb4e2e9 | 430 | |
b5af8293 | 431 | td_io_close_file(td, f); |
b3dc7f07 JA |
432 | |
433 | if (f->file_map) | |
434 | free(f->file_map); | |
53cdc686 | 435 | } |
b4a6a59a | 436 | |
132ad46d | 437 | td->filename = NULL; |
b4a6a59a JA |
438 | free(td->files); |
439 | td->files = NULL; | |
440 | td->nr_files = 0; | |
53cdc686 | 441 | } |
af52b345 | 442 | |
e3bab463 | 443 | static void get_file_type(struct fio_file *f) |
af52b345 JA |
444 | { |
445 | struct stat sb; | |
446 | ||
447 | f->filetype = FIO_TYPE_FILE; | |
448 | ||
e3bab463 | 449 | if (!lstat(f->file_name, &sb)) { |
96d32d51 JA |
450 | f->flags |= FIO_FILE_EXISTS; |
451 | ||
af52b345 JA |
452 | if (S_ISBLK(sb.st_mode)) |
453 | f->filetype = FIO_TYPE_BD; | |
454 | else if (S_ISCHR(sb.st_mode)) | |
455 | f->filetype = FIO_TYPE_CHAR; | |
96d32d51 JA |
456 | else { |
457 | /* | |
458 | * might as well do this here, and save a stat later on | |
459 | */ | |
460 | f->real_file_size = sb.st_size; | |
461 | f->file_size = f->real_file_size; | |
462 | } | |
af52b345 JA |
463 | } |
464 | } | |
465 | ||
466 | void add_file(struct thread_data *td, const char *fname) | |
467 | { | |
7b4e4fe5 | 468 | int cur_files = td->files_index; |
af52b345 JA |
469 | struct fio_file *f; |
470 | ||
471 | td->files = realloc(td->files, (cur_files + 1) * sizeof(*f)); | |
472 | ||
473 | f = &td->files[cur_files]; | |
474 | memset(f, 0, sizeof(*f)); | |
475 | f->fd = -1; | |
cae61953 | 476 | f->file_name = strdup(fname); |
af52b345 | 477 | |
e3bab463 | 478 | get_file_type(f); |
af52b345 | 479 | |
7b4e4fe5 | 480 | td->files_index++; |
1549441c JA |
481 | if (f->filetype == FIO_TYPE_FILE) |
482 | td->nr_normal_files++; | |
af52b345 | 483 | } |
0ad920e7 JA |
484 | |
485 | void get_file(struct fio_file *f) | |
486 | { | |
487 | f->references++; | |
488 | } | |
489 | ||
490 | void put_file(struct thread_data *td, struct fio_file *f) | |
491 | { | |
492 | if (!(f->flags & FIO_FILE_OPEN)) | |
493 | return; | |
494 | ||
495 | assert(f->references); | |
496 | if (--f->references) | |
497 | return; | |
498 | ||
ebb1415f JA |
499 | if (should_fsync(td) && td->fsync_on_close) |
500 | fsync(f->fd); | |
501 | ||
0ad920e7 JA |
502 | if (td->io_ops->close_file) |
503 | td->io_ops->close_file(td, f); | |
504 | td->nr_open_files--; | |
505 | f->flags &= ~FIO_FILE_OPEN; | |
506 | } | |
bbf6b540 JA |
507 | |
508 | static int recurse_dir(struct thread_data *td, const char *dirname) | |
509 | { | |
510 | struct dirent *dir; | |
511 | int ret = 0; | |
512 | DIR *D; | |
513 | ||
514 | D = opendir(dirname); | |
515 | if (!D) { | |
516 | td_verror(td, errno, "opendir"); | |
517 | return 1; | |
518 | } | |
519 | ||
520 | while ((dir = readdir(D)) != NULL) { | |
521 | char full_path[PATH_MAX]; | |
522 | struct stat sb; | |
523 | ||
e85b2b83 JA |
524 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
525 | continue; | |
96d32d51 | 526 | |
bbf6b540 JA |
527 | sprintf(full_path, "%s/%s", dirname, dir->d_name); |
528 | ||
529 | if (lstat(full_path, &sb) == -1) { | |
530 | if (errno != ENOENT) { | |
531 | td_verror(td, errno, "stat"); | |
532 | return 1; | |
533 | } | |
534 | } | |
535 | ||
536 | if (S_ISREG(sb.st_mode)) { | |
537 | add_file(td, full_path); | |
538 | td->nr_files++; | |
539 | continue; | |
540 | } | |
541 | ||
bbf6b540 JA |
542 | if ((ret = recurse_dir(td, full_path)) != 0) |
543 | break; | |
544 | } | |
545 | ||
546 | closedir(D); | |
547 | return ret; | |
548 | } | |
549 | ||
550 | int add_dir_files(struct thread_data *td, const char *path) | |
551 | { | |
552 | return recurse_dir(td, path); | |
553 | } |