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> | |
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 | |
b5af8293 JA |
18 | if (td->filetype != FIO_TYPE_FILE || |
19 | (td->io_ops->flags & FIO_DISKLESSIO)) | |
b2a15192 JA |
20 | return 0; |
21 | ||
fa01d139 | 22 | if (lstat(f->file_name, &st) == -1) |
25205e97 | 23 | return 1; |
fa01d139 JA |
24 | |
25 | /* | |
26 | * if it's a special file, size is always ok for now | |
27 | */ | |
28 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) | |
29 | return 0; | |
30 | if (st.st_size < (off_t) f->file_size) | |
25205e97 JA |
31 | return 1; |
32 | ||
33 | return 0; | |
34 | } | |
35 | ||
36 | static int create_file(struct thread_data *td, struct fio_file *f) | |
37 | { | |
38 | unsigned long long left; | |
39 | unsigned int bs; | |
40 | char *b; | |
41 | int r; | |
b2a15192 | 42 | |
53cdc686 JA |
43 | f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
44 | if (f->fd < 0) { | |
e1161c32 | 45 | td_verror(td, errno, "open"); |
53cdc686 JA |
46 | return 1; |
47 | } | |
48 | ||
49 | if (ftruncate(f->fd, f->file_size) == -1) { | |
e1161c32 | 50 | td_verror(td, errno, "ftruncate"); |
53cdc686 JA |
51 | goto err; |
52 | } | |
53 | ||
40f8298c | 54 | if (posix_fallocate(f->fd, 0, f->file_size) < 0) { |
e1161c32 | 55 | td_verror(td, errno, "posix_fallocate"); |
40f8298c JA |
56 | goto err; |
57 | } | |
58 | ||
a00735e6 JA |
59 | b = malloc(td->max_bs[DDIR_WRITE]); |
60 | memset(b, 0, td->max_bs[DDIR_WRITE]); | |
53cdc686 JA |
61 | |
62 | left = f->file_size; | |
63 | while (left && !td->terminate) { | |
a00735e6 | 64 | bs = td->max_bs[DDIR_WRITE]; |
53cdc686 JA |
65 | if (bs > left) |
66 | bs = left; | |
67 | ||
68 | r = write(f->fd, b, bs); | |
69 | ||
70 | if (r == (int) bs) { | |
71 | left -= bs; | |
72 | continue; | |
73 | } else { | |
74 | if (r < 0) | |
e1161c32 | 75 | td_verror(td, errno, "write"); |
53cdc686 | 76 | else |
e1161c32 | 77 | td_verror(td, EIO, "write"); |
53cdc686 JA |
78 | |
79 | break; | |
80 | } | |
81 | } | |
82 | ||
83 | if (td->terminate) | |
84 | unlink(f->file_name); | |
85 | else if (td->create_fsync) | |
86 | fsync(f->fd); | |
87 | ||
88 | free(b); | |
89 | close(f->fd); | |
90 | f->fd = -1; | |
91 | return 0; | |
92 | err: | |
93 | close(f->fd); | |
94 | f->fd = -1; | |
95 | return 1; | |
96 | } | |
97 | ||
98 | static int create_files(struct thread_data *td) | |
99 | { | |
100 | struct fio_file *f; | |
0263882a | 101 | int i, err, need_create, can_extend; |
53cdc686 | 102 | |
f697125a JA |
103 | for_each_file(td, f, i) |
104 | f->file_size = td->total_file_size / td->nr_files; | |
105 | ||
53cdc686 JA |
106 | /* |
107 | * unless specifically asked for overwrite, let normal io extend it | |
108 | */ | |
0263882a JA |
109 | can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND); |
110 | if (can_extend) | |
53cdc686 | 111 | return 0; |
53cdc686 | 112 | |
25205e97 | 113 | need_create = 0; |
eff6861d JA |
114 | if (td->filetype == FIO_TYPE_FILE) { |
115 | for_each_file(td, f, i) { | |
116 | int file_there = !file_ok(td, f); | |
117 | ||
cf3d6097 | 118 | if (file_there && td_write(td) && !td->overwrite) { |
eff6861d JA |
119 | unlink(f->file_name); |
120 | file_there = 0; | |
121 | } | |
122 | ||
123 | need_create += !file_there; | |
124 | } | |
125 | } | |
25205e97 | 126 | |
25205e97 JA |
127 | if (!need_create) |
128 | return 0; | |
129 | ||
f1027063 JA |
130 | if (!td->total_file_size) { |
131 | log_err("Need size for create\n"); | |
e1161c32 | 132 | td_verror(td, EINVAL, "file_size"); |
f1027063 JA |
133 | return 1; |
134 | } | |
135 | ||
53cdc686 | 136 | temp_stall_ts = 1; |
1e97cce9 | 137 | fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n", |
13f8e2d2 JA |
138 | td->name, td->nr_uniq_files, |
139 | (td->total_file_size >> 20) / td->nr_uniq_files, | |
25205e97 | 140 | td->total_file_size >> 20); |
53cdc686 JA |
141 | |
142 | err = 0; | |
143 | for_each_file(td, f, i) { | |
9b031dc8 JA |
144 | /* |
145 | * Only unlink files that we created. | |
146 | */ | |
147 | f->unlink = 0; | |
25205e97 | 148 | if (file_ok(td, f)) { |
9b031dc8 | 149 | f->unlink = td->unlink; |
25205e97 JA |
150 | err = create_file(td, f); |
151 | if (err) | |
152 | break; | |
153 | } | |
53cdc686 JA |
154 | } |
155 | ||
156 | temp_stall_ts = 0; | |
157 | return err; | |
158 | } | |
159 | ||
160 | static int file_size(struct thread_data *td, struct fio_file *f) | |
161 | { | |
162 | struct stat st; | |
163 | ||
164 | if (td->overwrite) { | |
165 | if (fstat(f->fd, &st) == -1) { | |
e1161c32 | 166 | td_verror(td, errno, "fstat"); |
53cdc686 JA |
167 | return 1; |
168 | } | |
169 | ||
170 | f->real_file_size = st.st_size; | |
171 | ||
172 | if (!f->file_size || f->file_size > f->real_file_size) | |
173 | f->file_size = f->real_file_size; | |
745508dd JA |
174 | } else |
175 | f->real_file_size = f->file_size; | |
53cdc686 | 176 | |
53cdc686 JA |
177 | return 0; |
178 | } | |
179 | ||
180 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
181 | { | |
182 | unsigned long long bytes; | |
183 | int r; | |
184 | ||
185 | r = blockdev_size(f->fd, &bytes); | |
186 | if (r) { | |
e1161c32 | 187 | td_verror(td, r, "blockdev_size"); |
53cdc686 JA |
188 | return 1; |
189 | } | |
190 | ||
191 | f->real_file_size = bytes; | |
192 | ||
193 | /* | |
194 | * no extend possibilities, so limit size to device size if too large | |
195 | */ | |
196 | if (!f->file_size || f->file_size > f->real_file_size) | |
197 | f->file_size = f->real_file_size; | |
198 | ||
199 | f->file_size -= f->file_offset; | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
204 | { | |
205 | int ret = 0; | |
206 | ||
207 | if (td->filetype == FIO_TYPE_FILE) | |
208 | ret = file_size(td, f); | |
209 | else if (td->filetype == FIO_TYPE_BD) | |
210 | ret = bdev_size(td, f); | |
211 | else | |
212 | f->real_file_size = -1; | |
213 | ||
214 | if (ret) | |
215 | return ret; | |
216 | ||
217 | if (f->file_offset > f->real_file_size) { | |
218 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); | |
219 | return 1; | |
220 | } | |
221 | ||
53cdc686 JA |
222 | return 0; |
223 | } | |
224 | ||
e5b401d4 JA |
225 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
226 | { | |
227 | int ret = 0; | |
228 | ||
da86ccb6 | 229 | if (td->odirect) |
b5af8293 JA |
230 | return 0; |
231 | ||
e5b401d4 JA |
232 | /* |
233 | * FIXME: add blockdev flushing too | |
234 | */ | |
b5af8293 | 235 | if (f->mmap) |
e5b401d4 | 236 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); |
ad2da605 | 237 | else if (td->filetype == FIO_TYPE_FILE) { |
b5af8293 | 238 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); |
ad2da605 | 239 | } else if (td->filetype == FIO_TYPE_BD) { |
b5af8293 | 240 | ret = blockdev_invalidate_cache(f->fd); |
ad2da605 | 241 | } else if (td->filetype == FIO_TYPE_CHAR) |
e5b401d4 JA |
242 | ret = 0; |
243 | ||
244 | if (ret < 0) { | |
e1161c32 | 245 | td_verror(td, errno, "invalidate_cache"); |
e5b401d4 JA |
246 | return 1; |
247 | } | |
248 | ||
ad2da605 | 249 | return ret; |
e5b401d4 JA |
250 | } |
251 | ||
b5af8293 | 252 | void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
53cdc686 | 253 | { |
b5af8293 JA |
254 | close(f->fd); |
255 | f->fd = -1; | |
53cdc686 JA |
256 | } |
257 | ||
b5af8293 | 258 | int generic_open_file(struct thread_data *td, struct fio_file *f) |
53cdc686 | 259 | { |
53cdc686 JA |
260 | int flags = 0; |
261 | ||
2fd233b7 JA |
262 | if (td->odirect) |
263 | flags |= OS_O_DIRECT; | |
264 | if (td->sync_io) | |
265 | flags |= O_SYNC; | |
53cdc686 | 266 | |
2fd233b7 JA |
267 | if (td_write(td) || td_rw(td)) { |
268 | flags |= O_RDWR; | |
53cdc686 | 269 | |
0263882a | 270 | if (td->filetype == FIO_TYPE_FILE) |
2fd233b7 | 271 | flags |= O_CREAT; |
2fd233b7 | 272 | |
b5af8293 | 273 | f->fd = open(f->file_name, flags, 0600); |
2fd233b7 JA |
274 | } else { |
275 | if (td->filetype == FIO_TYPE_CHAR) | |
276 | flags |= O_RDWR; | |
277 | else | |
278 | flags |= O_RDONLY; | |
279 | ||
b5af8293 | 280 | f->fd = open(f->file_name, flags); |
53cdc686 JA |
281 | } |
282 | ||
283 | if (f->fd == -1) { | |
e1161c32 JA |
284 | int __e = errno; |
285 | ||
286 | td_verror(td, __e, "open"); | |
287 | if (__e == EINVAL && td->odirect) | |
9d80e114 | 288 | log_err("fio: destination does not support O_DIRECT\n"); |
53cdc686 JA |
289 | return 1; |
290 | } | |
291 | ||
b5af8293 JA |
292 | if (get_file_size(td, f)) |
293 | goto err; | |
294 | ||
0263882a | 295 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
b5af8293 JA |
296 | goto err; |
297 | ||
298 | if (!td_random(td)) { | |
299 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { | |
300 | td_verror(td, errno, "fadvise"); | |
301 | goto err; | |
302 | } | |
303 | } else { | |
304 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { | |
305 | td_verror(td, errno, "fadvise"); | |
306 | goto err; | |
307 | } | |
bdb4e2e9 | 308 | } |
53cdc686 JA |
309 | |
310 | return 0; | |
b5af8293 JA |
311 | err: |
312 | close(f->fd); | |
313 | return 1; | |
314 | } | |
315 | ||
21972cde JA |
316 | int open_files(struct thread_data *td) |
317 | { | |
318 | struct fio_file *f; | |
319 | int i, err = 0; | |
320 | ||
321 | for_each_file(td, f, i) { | |
b5af8293 | 322 | err = td_io_open_file(td, f); |
21972cde JA |
323 | if (err) |
324 | break; | |
b5af8293 JA |
325 | |
326 | if (td->open_files == td->nr_open_files) | |
327 | break; | |
21972cde JA |
328 | } |
329 | ||
7abf833d JA |
330 | if (!err) |
331 | return 0; | |
332 | ||
bdb4e2e9 | 333 | for_each_file(td, f, i) |
b5af8293 | 334 | td_io_close_file(td, f); |
7abf833d | 335 | |
21972cde JA |
336 | return err; |
337 | } | |
338 | ||
53cdc686 JA |
339 | int setup_files(struct thread_data *td) |
340 | { | |
341 | struct fio_file *f; | |
21972cde | 342 | int err, i; |
53cdc686 JA |
343 | |
344 | /* | |
345 | * if ioengine defines a setup() method, it's responsible for | |
346 | * setting up everything in the td->files[] area. | |
347 | */ | |
348 | if (td->io_ops->setup) | |
349 | return td->io_ops->setup(td); | |
350 | ||
351 | if (create_files(td)) | |
352 | return 1; | |
353 | ||
21972cde | 354 | err = open_files(td); |
f1027063 JA |
355 | if (err) |
356 | return err; | |
357 | ||
0a7eb121 JA |
358 | /* |
359 | * Recalculate the total file size now that files are set up. | |
360 | */ | |
361 | td->total_file_size = 0; | |
362 | for_each_file(td, f, i) | |
363 | td->total_file_size += f->file_size; | |
364 | ||
0f14fef3 JA |
365 | td->total_file_size = (td->total_file_size * td->nr_files) / td->open_files; |
366 | ||
f1027063 | 367 | td->io_size = td->total_file_size; |
53cdc686 JA |
368 | if (td->io_size == 0) { |
369 | log_err("%s: no io blocks\n", td->name); | |
e1161c32 | 370 | td_verror(td, EINVAL, "total_file_size"); |
53cdc686 JA |
371 | return 1; |
372 | } | |
373 | ||
374 | if (!td->zone_size) | |
375 | td->zone_size = td->io_size; | |
376 | ||
377 | td->total_io_size = td->io_size * td->loops; | |
378 | ||
bdb4e2e9 | 379 | for_each_file(td, f, i) |
b5af8293 | 380 | td_io_close_file(td, f); |
21972cde JA |
381 | |
382 | return err; | |
53cdc686 JA |
383 | } |
384 | ||
385 | void close_files(struct thread_data *td) | |
386 | { | |
0ab8db89 | 387 | struct fio_file *f; |
53cdc686 JA |
388 | int i; |
389 | ||
0ab8db89 | 390 | for_each_file(td, f, i) { |
9b031dc8 | 391 | if (!td->filename && f->unlink && |
02bcaa8c | 392 | td->filetype == FIO_TYPE_FILE) { |
132ad46d JA |
393 | unlink(f->file_name); |
394 | free(f->file_name); | |
395 | f->file_name = NULL; | |
396 | } | |
bdb4e2e9 | 397 | |
b5af8293 | 398 | td_io_close_file(td, f); |
b3dc7f07 JA |
399 | |
400 | if (f->file_map) | |
401 | free(f->file_map); | |
53cdc686 | 402 | } |
b4a6a59a | 403 | |
132ad46d | 404 | td->filename = NULL; |
b4a6a59a JA |
405 | free(td->files); |
406 | td->files = NULL; | |
407 | td->nr_files = 0; | |
53cdc686 | 408 | } |