Commit | Line | Data |
---|---|---|
910c72df | 1 | /* |
a7a817a2 | 2 | * file/directory operations engine |
910c72df | 3 | * |
a7a817a2 | 4 | * IO engine that doesn't do any IO, just operates files/directories |
5 | * and tracks the latency of the operation. | |
910c72df FS |
6 | */ |
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
9 | #include <fcntl.h> | |
10 | #include <errno.h> | |
11 | #include <sys/types.h> | |
12 | #include <sys/stat.h> | |
13 | #include <unistd.h> | |
14 | #include "../fio.h" | |
15 | #include "../optgroup.h" | |
16 | #include "../oslib/statx.h" | |
17 | ||
a7a817a2 | 18 | enum fio_engine { |
19 | UNKNOWN_OP_ENGINE = 0, | |
20 | FILE_OP_ENGINE = 1, | |
21 | DIR_OP_ENGINE = 2, | |
22 | }; | |
910c72df FS |
23 | |
24 | struct fc_data { | |
25 | enum fio_ddir stat_ddir; | |
a7a817a2 | 26 | enum fio_engine op_engine; |
910c72df FS |
27 | }; |
28 | ||
29 | struct filestat_options { | |
30 | void *pad; | |
31 | unsigned int stat_type; | |
32 | }; | |
33 | ||
34 | enum { | |
35 | FIO_FILESTAT_STAT = 1, | |
36 | FIO_FILESTAT_LSTAT = 2, | |
37 | FIO_FILESTAT_STATX = 3, | |
38 | }; | |
39 | ||
40 | static struct fio_option options[] = { | |
41 | { | |
42 | .name = "stat_type", | |
43 | .lname = "stat_type", | |
44 | .type = FIO_OPT_STR, | |
45 | .off1 = offsetof(struct filestat_options, stat_type), | |
46 | .help = "Specify stat system call type to measure lookup/getattr performance", | |
47 | .def = "stat", | |
48 | .posval = { | |
49 | { .ival = "stat", | |
50 | .oval = FIO_FILESTAT_STAT, | |
51 | .help = "Use stat(2)", | |
52 | }, | |
53 | { .ival = "lstat", | |
54 | .oval = FIO_FILESTAT_LSTAT, | |
55 | .help = "Use lstat(2)", | |
56 | }, | |
57 | { .ival = "statx", | |
58 | .oval = FIO_FILESTAT_STATX, | |
59 | .help = "Use statx(2) if exists", | |
60 | }, | |
61 | }, | |
62 | .category = FIO_OPT_C_ENGINE, | |
63 | .group = FIO_OPT_G_FILESTAT, | |
64 | }, | |
65 | { | |
66 | .name = NULL, | |
67 | }, | |
68 | }; | |
69 | ||
a7a817a2 | 70 | static int setup_dirs(struct thread_data *td) |
71 | { | |
72 | int ret = 0; | |
73 | int i; | |
74 | struct fio_file *f; | |
75 | ||
76 | for_each_file(td, f, i) { | |
77 | dprint(FD_FILE, "setup directory %s\n", f->file_name); | |
78 | ret = fio_mkdir(f->file_name, 0700); | |
79 | if ((ret && errno != EEXIST)) { | |
80 | log_err("create directory %s failed with %d\n", | |
81 | f->file_name, errno); | |
82 | break; | |
83 | } | |
84 | ret = 0; | |
85 | } | |
86 | return ret; | |
87 | } | |
88 | ||
910c72df FS |
89 | static int open_file(struct thread_data *td, struct fio_file *f) |
90 | { | |
91 | struct timespec start; | |
92 | int do_lat = !td->o.disable_lat; | |
caa20ee5 | 93 | struct fc_data *fcd = td->io_ops_data; |
910c72df FS |
94 | |
95 | dprint(FD_FILE, "fd open %s\n", f->file_name); | |
96 | ||
97 | if (f->filetype != FIO_TYPE_FILE) { | |
98 | log_err("fio: only files are supported\n"); | |
99 | return 1; | |
100 | } | |
101 | if (!strcmp(f->file_name, "-")) { | |
102 | log_err("fio: can't read/write to stdin/out\n"); | |
103 | return 1; | |
104 | } | |
105 | ||
106 | if (do_lat) | |
107 | fio_gettime(&start, NULL); | |
108 | ||
caa20ee5 | 109 | if (fcd->op_engine == FILE_OP_ENGINE) |
a7a817a2 | 110 | f->fd = open(f->file_name, O_CREAT|O_RDWR, 0600); |
caa20ee5 | 111 | else if (fcd->op_engine == DIR_OP_ENGINE) |
a7a817a2 | 112 | f->fd = fio_mkdir(f->file_name, S_IFDIR); |
113 | else { | |
114 | log_err("fio: unknown file/directory operation engine\n"); | |
115 | return 1; | |
116 | } | |
910c72df FS |
117 | |
118 | if (f->fd == -1) { | |
119 | char buf[FIO_VERROR_SIZE]; | |
120 | int e = errno; | |
121 | ||
122 | snprintf(buf, sizeof(buf), "open(%s)", f->file_name); | |
123 | td_verror(td, e, buf); | |
124 | return 1; | |
125 | } | |
126 | ||
127 | if (do_lat) { | |
128 | struct fc_data *data = td->io_ops_data; | |
129 | uint64_t nsec; | |
130 | ||
131 | nsec = ntime_since_now(&start); | |
132 | add_clat_sample(td, data->stat_ddir, nsec, 0, 0, 0, 0); | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static int stat_file(struct thread_data *td, struct fio_file *f) | |
139 | { | |
140 | struct filestat_options *o = td->eo; | |
141 | struct timespec start; | |
142 | int do_lat = !td->o.disable_lat; | |
143 | struct stat statbuf; | |
144 | #ifndef WIN32 | |
145 | struct statx statxbuf; | |
146 | char *abspath; | |
147 | #endif | |
148 | int ret; | |
149 | ||
150 | dprint(FD_FILE, "fd stat %s\n", f->file_name); | |
151 | ||
152 | if (f->filetype != FIO_TYPE_FILE) { | |
153 | log_err("fio: only files are supported\n"); | |
154 | return 1; | |
155 | } | |
156 | if (!strcmp(f->file_name, "-")) { | |
157 | log_err("fio: can't read/write to stdin/out\n"); | |
158 | return 1; | |
159 | } | |
160 | ||
161 | if (do_lat) | |
162 | fio_gettime(&start, NULL); | |
163 | ||
164 | switch (o->stat_type) { | |
165 | case FIO_FILESTAT_STAT: | |
166 | ret = stat(f->file_name, &statbuf); | |
167 | break; | |
168 | case FIO_FILESTAT_LSTAT: | |
169 | ret = lstat(f->file_name, &statbuf); | |
170 | break; | |
171 | case FIO_FILESTAT_STATX: | |
172 | #ifndef WIN32 | |
173 | abspath = realpath(f->file_name, NULL); | |
174 | if (abspath) { | |
175 | ret = statx(-1, abspath, 0, STATX_ALL, &statxbuf); | |
176 | free(abspath); | |
177 | } else | |
178 | ret = -1; | |
179 | #else | |
180 | ret = -1; | |
181 | #endif | |
182 | break; | |
183 | default: | |
184 | ret = -1; | |
185 | break; | |
186 | } | |
187 | ||
188 | if (ret == -1) { | |
189 | char buf[FIO_VERROR_SIZE]; | |
190 | int e = errno; | |
191 | ||
192 | snprintf(buf, sizeof(buf), "stat(%s) type=%u", f->file_name, | |
193 | o->stat_type); | |
194 | td_verror(td, e, buf); | |
195 | return 1; | |
196 | } | |
197 | ||
198 | if (do_lat) { | |
199 | struct fc_data *data = td->io_ops_data; | |
200 | uint64_t nsec; | |
201 | ||
202 | nsec = ntime_since_now(&start); | |
203 | add_clat_sample(td, data->stat_ddir, nsec, 0, 0, 0, 0); | |
204 | } | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
910c72df FS |
209 | static int delete_file(struct thread_data *td, struct fio_file *f) |
210 | { | |
211 | struct timespec start; | |
212 | int do_lat = !td->o.disable_lat; | |
caa20ee5 | 213 | struct fc_data *fcd = td->io_ops_data; |
910c72df FS |
214 | int ret; |
215 | ||
216 | dprint(FD_FILE, "fd delete %s\n", f->file_name); | |
217 | ||
218 | if (f->filetype != FIO_TYPE_FILE) { | |
219 | log_err("fio: only files are supported\n"); | |
220 | return 1; | |
221 | } | |
222 | if (!strcmp(f->file_name, "-")) { | |
223 | log_err("fio: can't read/write to stdin/out\n"); | |
224 | return 1; | |
225 | } | |
226 | ||
227 | if (do_lat) | |
228 | fio_gettime(&start, NULL); | |
229 | ||
caa20ee5 | 230 | if (fcd->op_engine == FILE_OP_ENGINE) |
a7a817a2 | 231 | ret = unlink(f->file_name); |
caa20ee5 | 232 | else if (fcd->op_engine == DIR_OP_ENGINE) |
a7a817a2 | 233 | ret = rmdir(f->file_name); |
234 | else { | |
235 | log_err("fio: unknown file/directory operation engine\n"); | |
236 | return 1; | |
237 | } | |
238 | ||
910c72df FS |
239 | if (ret == -1) { |
240 | char buf[FIO_VERROR_SIZE]; | |
241 | int e = errno; | |
242 | ||
243 | snprintf(buf, sizeof(buf), "delete(%s)", f->file_name); | |
244 | td_verror(td, e, buf); | |
245 | return 1; | |
246 | } | |
247 | ||
248 | if (do_lat) { | |
249 | struct fc_data *data = td->io_ops_data; | |
250 | uint64_t nsec; | |
251 | ||
252 | nsec = ntime_since_now(&start); | |
253 | add_clat_sample(td, data->stat_ddir, nsec, 0, 0, 0, 0); | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | static int invalidate_do_nothing(struct thread_data *td, struct fio_file *f) | |
260 | { | |
261 | /* do nothing because file not opened */ | |
262 | return 0; | |
263 | } | |
264 | ||
265 | static enum fio_q_status queue_io(struct thread_data *td, struct io_u *io_u) | |
266 | { | |
267 | return FIO_Q_COMPLETED; | |
268 | } | |
269 | ||
270 | /* | |
271 | * Ensure that we at least have a block size worth of IO to do for each | |
272 | * file. If the job file has td->o.size < nr_files * block_size, then | |
273 | * fio won't do anything. | |
274 | */ | |
275 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
276 | { | |
277 | f->real_file_size = td_min_bs(td); | |
278 | return 0; | |
279 | } | |
280 | ||
281 | static int init(struct thread_data *td) | |
282 | { | |
283 | struct fc_data *data; | |
284 | ||
285 | data = calloc(1, sizeof(*data)); | |
286 | ||
287 | if (td_read(td)) | |
288 | data->stat_ddir = DDIR_READ; | |
289 | else if (td_write(td)) | |
290 | data->stat_ddir = DDIR_WRITE; | |
291 | ||
a7a817a2 | 292 | data->op_engine = UNKNOWN_OP_ENGINE; |
293 | ||
294 | if (!strncmp(td->o.ioengine, "file", 4)) { | |
295 | data->op_engine = FILE_OP_ENGINE; | |
296 | dprint(FD_FILE, "Operate engine type: file\n"); | |
297 | } | |
298 | if (!strncmp(td->o.ioengine, "dir", 3)) { | |
299 | data->op_engine = DIR_OP_ENGINE; | |
300 | dprint(FD_FILE, "Operate engine type: directory\n"); | |
301 | } | |
302 | ||
910c72df FS |
303 | td->io_ops_data = data; |
304 | return 0; | |
305 | } | |
306 | ||
307 | static void cleanup(struct thread_data *td) | |
308 | { | |
309 | struct fc_data *data = td->io_ops_data; | |
310 | ||
311 | free(data); | |
312 | } | |
313 | ||
a7a817a2 | 314 | static int remove_dir(struct thread_data *td, struct fio_file *f) |
315 | { | |
316 | dprint(FD_FILE, "remove directory %s\n", f->file_name); | |
317 | return rmdir(f->file_name); | |
318 | } | |
319 | ||
910c72df FS |
320 | static struct ioengine_ops ioengine_filecreate = { |
321 | .name = "filecreate", | |
322 | .version = FIO_IOOPS_VERSION, | |
323 | .init = init, | |
324 | .cleanup = cleanup, | |
325 | .queue = queue_io, | |
326 | .get_file_size = get_file_size, | |
327 | .open_file = open_file, | |
328 | .close_file = generic_close_file, | |
329 | .flags = FIO_DISKLESSIO | FIO_SYNCIO | FIO_FAKEIO | | |
330 | FIO_NOSTATS | FIO_NOFILEHASH, | |
331 | }; | |
332 | ||
333 | static struct ioengine_ops ioengine_filestat = { | |
334 | .name = "filestat", | |
335 | .version = FIO_IOOPS_VERSION, | |
336 | .init = init, | |
337 | .cleanup = cleanup, | |
338 | .queue = queue_io, | |
339 | .invalidate = invalidate_do_nothing, | |
340 | .get_file_size = generic_get_file_size, | |
341 | .open_file = stat_file, | |
342 | .flags = FIO_SYNCIO | FIO_FAKEIO | | |
343 | FIO_NOSTATS | FIO_NOFILEHASH, | |
344 | .options = options, | |
345 | .option_struct_size = sizeof(struct filestat_options), | |
346 | }; | |
347 | ||
348 | static struct ioengine_ops ioengine_filedelete = { | |
349 | .name = "filedelete", | |
350 | .version = FIO_IOOPS_VERSION, | |
351 | .init = init, | |
352 | .invalidate = invalidate_do_nothing, | |
353 | .cleanup = cleanup, | |
354 | .queue = queue_io, | |
355 | .get_file_size = generic_get_file_size, | |
356 | .open_file = delete_file, | |
357 | .flags = FIO_SYNCIO | FIO_FAKEIO | | |
358 | FIO_NOSTATS | FIO_NOFILEHASH, | |
359 | }; | |
360 | ||
a7a817a2 | 361 | static struct ioengine_ops ioengine_dircreate = { |
362 | .name = "dircreate", | |
363 | .version = FIO_IOOPS_VERSION, | |
364 | .init = init, | |
365 | .cleanup = cleanup, | |
366 | .queue = queue_io, | |
367 | .get_file_size = get_file_size, | |
368 | .open_file = open_file, | |
369 | .close_file = generic_close_file, | |
370 | .unlink_file = remove_dir, | |
371 | .flags = FIO_DISKLESSIO | FIO_SYNCIO | FIO_FAKEIO | | |
372 | FIO_NOSTATS | FIO_NOFILEHASH, | |
373 | }; | |
374 | ||
375 | static struct ioengine_ops ioengine_dirstat = { | |
376 | .name = "dirstat", | |
377 | .version = FIO_IOOPS_VERSION, | |
378 | .setup = setup_dirs, | |
379 | .init = init, | |
380 | .cleanup = cleanup, | |
381 | .queue = queue_io, | |
382 | .invalidate = invalidate_do_nothing, | |
383 | .get_file_size = generic_get_file_size, | |
384 | .open_file = stat_file, | |
385 | .unlink_file = remove_dir, | |
386 | .flags = FIO_DISKLESSIO | FIO_SYNCIO | FIO_FAKEIO | | |
387 | FIO_NOSTATS | FIO_NOFILEHASH, | |
388 | .options = options, | |
389 | .option_struct_size = sizeof(struct filestat_options), | |
390 | }; | |
391 | ||
392 | static struct ioengine_ops ioengine_dirdelete = { | |
393 | .name = "dirdelete", | |
394 | .version = FIO_IOOPS_VERSION, | |
395 | .setup = setup_dirs, | |
396 | .init = init, | |
397 | .invalidate = invalidate_do_nothing, | |
398 | .cleanup = cleanup, | |
399 | .queue = queue_io, | |
400 | .get_file_size = get_file_size, | |
401 | .open_file = delete_file, | |
402 | .unlink_file = remove_dir, | |
403 | .flags = FIO_DISKLESSIO | FIO_SYNCIO | FIO_FAKEIO | | |
404 | FIO_NOSTATS | FIO_NOFILEHASH, | |
405 | }; | |
406 | ||
910c72df FS |
407 | static void fio_init fio_fileoperations_register(void) |
408 | { | |
409 | register_ioengine(&ioengine_filecreate); | |
410 | register_ioengine(&ioengine_filestat); | |
411 | register_ioengine(&ioengine_filedelete); | |
a7a817a2 | 412 | register_ioengine(&ioengine_dircreate); |
413 | register_ioengine(&ioengine_dirstat); | |
414 | register_ioengine(&ioengine_dirdelete); | |
910c72df FS |
415 | } |
416 | ||
417 | static void fio_exit fio_fileoperations_unregister(void) | |
418 | { | |
419 | unregister_ioengine(&ioengine_filecreate); | |
420 | unregister_ioengine(&ioengine_filestat); | |
421 | unregister_ioengine(&ioengine_filedelete); | |
a7a817a2 | 422 | unregister_ioengine(&ioengine_dircreate); |
423 | unregister_ioengine(&ioengine_dirstat); | |
424 | unregister_ioengine(&ioengine_dirdelete); | |
910c72df | 425 | } |