Commit | Line | Data |
---|---|---|
cb2c86fd JA |
1 | /* |
2 | * This file contains the ini and command liner parser main. | |
3 | */ | |
4 | #include <stdio.h> | |
5 | #include <stdlib.h> | |
6 | #include <unistd.h> | |
7 | #include <ctype.h> | |
8 | #include <string.h> | |
9 | #include <errno.h> | |
10 | #include <limits.h> | |
11 | ||
12 | #include "parse.h" | |
13 | ||
b1ec1da6 JA |
14 | static void show_option_range(struct fio_option *o) |
15 | { | |
16 | if (!o->minval && !o->maxval) | |
17 | return; | |
18 | ||
ec1aee01 | 19 | printf("%20s: min=%d, max=%d\n", "range", o->minval, o->maxval); |
b1ec1da6 JA |
20 | } |
21 | ||
22 | static void show_option_values(struct fio_option *o) | |
23 | { | |
24 | const char *msg; | |
25 | int i = 0; | |
26 | ||
27 | do { | |
28 | msg = o->posval[i].ival; | |
29 | if (!msg) | |
30 | break; | |
31 | ||
32 | if (!i) | |
ec1aee01 | 33 | printf("%20s: ", "valid values"); |
b1ec1da6 JA |
34 | |
35 | printf("%s,", msg); | |
36 | i++; | |
37 | } while (i < PARSE_MAX_VP); | |
38 | ||
39 | if (i) | |
40 | printf("\n"); | |
41 | } | |
42 | ||
cb2c86fd JA |
43 | static unsigned long get_mult_time(char c) |
44 | { | |
45 | switch (c) { | |
46 | case 'm': | |
47 | case 'M': | |
48 | return 60; | |
49 | case 'h': | |
50 | case 'H': | |
51 | return 60 * 60; | |
52 | case 'd': | |
53 | case 'D': | |
54 | return 24 * 60 * 60; | |
55 | default: | |
56 | return 1; | |
57 | } | |
58 | } | |
59 | ||
60 | static unsigned long get_mult_bytes(char c) | |
61 | { | |
62 | switch (c) { | |
63 | case 'k': | |
64 | case 'K': | |
65 | return 1024; | |
66 | case 'm': | |
67 | case 'M': | |
68 | return 1024 * 1024; | |
69 | case 'g': | |
70 | case 'G': | |
71 | return 1024 * 1024 * 1024; | |
f3502ba2 JA |
72 | case 'e': |
73 | case 'E': | |
74 | return 1024 * 1024 * 1024 * 1024UL; | |
cb2c86fd JA |
75 | default: |
76 | return 1; | |
77 | } | |
78 | } | |
79 | ||
80 | /* | |
e1f36503 | 81 | * convert string into decimal value, noting any size suffix |
cb2c86fd | 82 | */ |
63f29372 | 83 | static int str_to_decimal(const char *str, long long *val, int kilo) |
cb2c86fd | 84 | { |
cb2c86fd JA |
85 | int len; |
86 | ||
cb2c86fd | 87 | len = strlen(str); |
f90eff5a JA |
88 | if (!len) |
89 | return 1; | |
cb2c86fd | 90 | |
675de85a | 91 | *val = strtoll(str, NULL, 10); |
cda866ca | 92 | if (*val == LONG_MAX && errno == ERANGE) |
cb2c86fd JA |
93 | return 1; |
94 | ||
95 | if (kilo) | |
96 | *val *= get_mult_bytes(str[len - 1]); | |
97 | else | |
98 | *val *= get_mult_time(str[len - 1]); | |
787f7e95 | 99 | |
cb2c86fd JA |
100 | return 0; |
101 | } | |
102 | ||
63f29372 | 103 | static int check_str_bytes(const char *p, long long *val) |
cb2c86fd | 104 | { |
cb2c86fd JA |
105 | return str_to_decimal(p, val, 1); |
106 | } | |
107 | ||
63f29372 | 108 | static int check_str_time(const char *p, long long *val) |
cb2c86fd | 109 | { |
cb2c86fd JA |
110 | return str_to_decimal(p, val, 0); |
111 | } | |
112 | ||
113 | void strip_blank_front(char **p) | |
114 | { | |
115 | char *s = *p; | |
116 | ||
117 | while (isspace(*s)) | |
118 | s++; | |
119 | } | |
120 | ||
121 | void strip_blank_end(char *p) | |
122 | { | |
123 | char *s = p + strlen(p) - 1; | |
124 | ||
125 | while (isspace(*s) || iscntrl(*s)) | |
126 | s--; | |
127 | ||
128 | *(s + 1) = '\0'; | |
129 | } | |
130 | ||
63f29372 | 131 | static int check_range_bytes(const char *str, long *val) |
cb2c86fd JA |
132 | { |
133 | char suffix; | |
134 | ||
787f7e95 JA |
135 | if (!strlen(str)) |
136 | return 1; | |
137 | ||
cb2c86fd JA |
138 | if (sscanf(str, "%lu%c", val, &suffix) == 2) { |
139 | *val *= get_mult_bytes(suffix); | |
140 | return 0; | |
141 | } | |
142 | ||
143 | if (sscanf(str, "%lu", val) == 1) | |
144 | return 0; | |
145 | ||
146 | return 1; | |
147 | } | |
148 | ||
63f29372 | 149 | static int check_int(const char *p, int *val) |
cb2c86fd | 150 | { |
787f7e95 JA |
151 | if (!strlen(p)) |
152 | return 1; | |
e1f36503 JA |
153 | if (sscanf(p, "%u", val) == 1) |
154 | return 0; | |
cb2c86fd | 155 | |
e1f36503 JA |
156 | return 1; |
157 | } | |
cb2c86fd | 158 | |
e1f36503 JA |
159 | static struct fio_option *find_option(struct fio_option *options, |
160 | const char *opt) | |
161 | { | |
4945ba12 | 162 | struct fio_option *o; |
cb2c86fd | 163 | |
4945ba12 | 164 | for (o = &options[0]; o->name; o++) { |
e1f36503 JA |
165 | if (!strcmp(o->name, opt)) |
166 | return o; | |
03b74b3e JA |
167 | else if (o->alias && !strcmp(o->alias, opt)) |
168 | return o; | |
33963c6c | 169 | } |
cb2c86fd | 170 | |
e1f36503 | 171 | return NULL; |
cb2c86fd JA |
172 | } |
173 | ||
17abbe89 JA |
174 | #define val_store(ptr, val, off, data) \ |
175 | do { \ | |
176 | ptr = td_var((data), (off)); \ | |
177 | *ptr = (val); \ | |
178 | } while (0) | |
179 | ||
f90eff5a | 180 | static int __handle_option(struct fio_option *o, const char *ptr, void *data, |
787f7e95 | 181 | int first, int more) |
cb2c86fd | 182 | { |
63f29372 JA |
183 | int il, *ilp; |
184 | long long ull, *ullp; | |
185 | long ul1, ul2; | |
b4692828 | 186 | char **cp; |
e1f36503 | 187 | int ret = 0, is_time = 0; |
cb2c86fd | 188 | |
08e26e35 JA |
189 | if (!ptr && o->type != FIO_OPT_STR_SET) { |
190 | fprintf(stderr, "Option %s requires an argument\n", o->name); | |
191 | return 1; | |
192 | } | |
193 | ||
e1f36503 JA |
194 | switch (o->type) { |
195 | case FIO_OPT_STR: { | |
196 | fio_opt_str_fn *fn = o->cb; | |
b1ec1da6 JA |
197 | const struct value_pair *vp; |
198 | int i; | |
199 | ||
200 | ret = 1; | |
201 | for (i = 0; i < PARSE_MAX_VP; i++) { | |
202 | vp = &o->posval[i]; | |
203 | if (!vp->ival || vp->ival[0] == '\0') | |
204 | break; | |
205 | if (!strncmp(vp->ival, ptr, strlen(vp->ival))) { | |
206 | ret = 0; | |
207 | if (!o->off1) | |
208 | break; | |
209 | val_store(ilp, vp->oval, o->off1, data); | |
210 | break; | |
211 | } | |
212 | } | |
cb2c86fd | 213 | |
b1ec1da6 JA |
214 | if (ret) |
215 | show_option_values(o); | |
216 | else if (fn) | |
217 | ret = fn(data, ptr); | |
e1f36503 JA |
218 | break; |
219 | } | |
220 | case FIO_OPT_STR_VAL_TIME: | |
221 | is_time = 1; | |
75e6f36f JA |
222 | case FIO_OPT_STR_VAL: |
223 | case FIO_OPT_STR_VAL_INT: { | |
e1f36503 JA |
224 | fio_opt_str_val_fn *fn = o->cb; |
225 | ||
226 | if (is_time) | |
227 | ret = check_str_time(ptr, &ull); | |
228 | else | |
229 | ret = check_str_bytes(ptr, &ull); | |
230 | ||
231 | if (ret) | |
232 | break; | |
233 | ||
db8e0165 JA |
234 | if (o->maxval && ull > o->maxval) { |
235 | fprintf(stderr, "max value out of range: %lld (%d max)\n", ull, o->maxval); | |
236 | return 1; | |
237 | } | |
238 | if (o->minval && ull < o->minval) { | |
239 | fprintf(stderr, "min value out of range: %lld (%d min)\n", ull, o->minval); | |
240 | return 1; | |
241 | } | |
e1f36503 JA |
242 | |
243 | if (fn) | |
244 | ret = fn(data, &ull); | |
245 | else { | |
75e6f36f | 246 | if (o->type == FIO_OPT_STR_VAL_INT) { |
17abbe89 JA |
247 | if (first) |
248 | val_store(ilp, ull, o->off1, data); | |
787f7e95 | 249 | if (!more && o->off2) |
17abbe89 | 250 | val_store(ilp, ull, o->off2, data); |
75e6f36f | 251 | } else { |
17abbe89 JA |
252 | if (first) |
253 | val_store(ullp, ull, o->off1, data); | |
787f7e95 | 254 | if (!more && o->off2) |
17abbe89 | 255 | val_store(ullp, ull, o->off2, data); |
75e6f36f | 256 | } |
e1f36503 JA |
257 | } |
258 | break; | |
259 | } | |
260 | case FIO_OPT_STR_STORE: | |
261 | cp = td_var(data, o->off1); | |
262 | *cp = strdup(ptr); | |
263 | break; | |
264 | case FIO_OPT_RANGE: { | |
b765a372 | 265 | char tmp[128]; |
e1f36503 JA |
266 | char *p1, *p2; |
267 | ||
0bbab0e7 | 268 | strncpy(tmp, ptr, sizeof(tmp) - 1); |
b765a372 JA |
269 | |
270 | p1 = strchr(tmp, '-'); | |
e1f36503 | 271 | if (!p1) { |
0c9baf91 JA |
272 | p1 = strchr(tmp, ':'); |
273 | if (!p1) { | |
274 | ret = 1; | |
275 | break; | |
276 | } | |
e1f36503 JA |
277 | } |
278 | ||
279 | p2 = p1 + 1; | |
280 | *p1 = '\0'; | |
b765a372 | 281 | p1 = tmp; |
e1f36503 JA |
282 | |
283 | ret = 1; | |
284 | if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) { | |
285 | ret = 0; | |
e1f36503 | 286 | if (ul1 > ul2) { |
f90eff5a JA |
287 | unsigned long foo = ul1; |
288 | ||
289 | ul1 = ul2; | |
290 | ul2 = foo; | |
291 | } | |
292 | ||
293 | if (first) { | |
17abbe89 JA |
294 | val_store(ilp, ul1, o->off1, data); |
295 | val_store(ilp, ul2, o->off2, data); | |
296 | } | |
787f7e95 | 297 | if (!more && o->off3 && o->off4) { |
17abbe89 JA |
298 | val_store(ilp, ul1, o->off3, data); |
299 | val_store(ilp, ul2, o->off4, data); | |
e1f36503 | 300 | } |
17abbe89 JA |
301 | } |
302 | ||
e1f36503 JA |
303 | break; |
304 | } | |
13335ddb JA |
305 | case FIO_OPT_INT: |
306 | case FIO_OPT_BOOL: { | |
e1f36503 JA |
307 | fio_opt_int_fn *fn = o->cb; |
308 | ||
309 | ret = check_int(ptr, &il); | |
310 | if (ret) | |
311 | break; | |
312 | ||
db8e0165 JA |
313 | if (o->maxval && il > (int) o->maxval) { |
314 | fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval); | |
315 | return 1; | |
316 | } | |
317 | if (o->minval && il < o->minval) { | |
318 | fprintf(stderr, "min value out of range: %d (%d min)\n", il, o->minval); | |
319 | return 1; | |
320 | } | |
e1f36503 | 321 | |
76a43db4 JA |
322 | if (o->neg) |
323 | il = !il; | |
324 | ||
e1f36503 JA |
325 | if (fn) |
326 | ret = fn(data, &il); | |
327 | else { | |
17abbe89 JA |
328 | if (first) |
329 | val_store(ilp, il, o->off1, data); | |
787f7e95 | 330 | if (!more && o->off2) |
17abbe89 | 331 | val_store(ilp, il, o->off2, data); |
e1f36503 JA |
332 | } |
333 | break; | |
334 | } | |
335 | case FIO_OPT_STR_SET: { | |
336 | fio_opt_str_set_fn *fn = o->cb; | |
337 | ||
338 | if (fn) | |
339 | ret = fn(data); | |
340 | else { | |
17abbe89 JA |
341 | if (first) |
342 | val_store(ilp, 1, o->off1, data); | |
787f7e95 | 343 | if (!more && o->off2) |
17abbe89 | 344 | val_store(ilp, 1, o->off2, data); |
e1f36503 JA |
345 | } |
346 | break; | |
347 | } | |
348 | default: | |
1e97cce9 | 349 | fprintf(stderr, "Bad option type %u\n", o->type); |
e1f36503 JA |
350 | ret = 1; |
351 | } | |
cb2c86fd | 352 | |
e1f36503 | 353 | return ret; |
cb2c86fd JA |
354 | } |
355 | ||
f90eff5a JA |
356 | static int handle_option(struct fio_option *o, const char *ptr, void *data) |
357 | { | |
92b586f8 | 358 | const char *ptr2 = NULL; |
787f7e95 | 359 | int r1, r2; |
f90eff5a JA |
360 | |
361 | /* | |
787f7e95 JA |
362 | * See if we have a second set of parameters, hidden after a comma. |
363 | * Do this before parsing the first round, to check if we should | |
364 | * copy set 1 options to set 2. | |
f90eff5a | 365 | */ |
ad231bc4 JB |
366 | if (ptr && |
367 | (o->type != FIO_OPT_STR_STORE) && | |
368 | (o->type != FIO_OPT_STR)) { | |
92b586f8 | 369 | ptr2 = strchr(ptr, ','); |
0c9baf91 JA |
370 | if (!ptr2) |
371 | ptr2 = strchr(ptr, ':'); | |
372 | } | |
787f7e95 JA |
373 | |
374 | /* | |
375 | * Don't return early if parsing the first option fails - if | |
376 | * we are doing multiple arguments, we can allow the first one | |
377 | * being empty. | |
378 | */ | |
379 | r1 = __handle_option(o, ptr, data, 1, !!ptr2); | |
380 | ||
f90eff5a | 381 | if (!ptr2) |
787f7e95 | 382 | return r1; |
f90eff5a JA |
383 | |
384 | ptr2++; | |
787f7e95 JA |
385 | r2 = __handle_option(o, ptr2, data, 0, 0); |
386 | ||
387 | return r1 && r2; | |
f90eff5a JA |
388 | } |
389 | ||
b4692828 JA |
390 | int parse_cmd_option(const char *opt, const char *val, |
391 | struct fio_option *options, void *data) | |
392 | { | |
393 | struct fio_option *o; | |
394 | ||
395 | o = find_option(options, opt); | |
396 | if (!o) { | |
397 | fprintf(stderr, "Bad option %s\n", opt); | |
398 | return 1; | |
399 | } | |
400 | ||
b1508cf9 JA |
401 | if (!handle_option(o, val, data)) |
402 | return 0; | |
403 | ||
404 | fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val); | |
405 | return 1; | |
b4692828 JA |
406 | } |
407 | ||
e1f36503 | 408 | int parse_option(const char *opt, struct fio_option *options, void *data) |
cb2c86fd | 409 | { |
b4692828 | 410 | struct fio_option *o; |
e1f36503 JA |
411 | char *pre, *post; |
412 | char tmp[64]; | |
413 | ||
0bbab0e7 | 414 | strncpy(tmp, opt, sizeof(tmp) - 1); |
e1f36503 JA |
415 | |
416 | pre = strchr(tmp, '='); | |
417 | if (pre) { | |
418 | post = pre; | |
419 | *pre = '\0'; | |
420 | pre = tmp; | |
421 | post++; | |
422 | o = find_option(options, pre); | |
423 | } else { | |
424 | o = find_option(options, tmp); | |
425 | post = NULL; | |
426 | } | |
cb2c86fd | 427 | |
e1f36503 JA |
428 | if (!o) { |
429 | fprintf(stderr, "Bad option %s\n", tmp); | |
430 | return 1; | |
431 | } | |
432 | ||
b1508cf9 JA |
433 | if (!handle_option(o, post, data)) |
434 | return 0; | |
435 | ||
436 | fprintf(stderr, "fio: failed parsing %s\n", opt); | |
437 | return 1; | |
e1f36503 | 438 | } |
fd28ca49 | 439 | |
0e9f7fac JA |
440 | /* |
441 | * Option match, levenshtein distance. Handy for not quite remembering what | |
442 | * the option name is. | |
443 | */ | |
444 | static int string_distance(const char *s1, const char *s2) | |
445 | { | |
446 | unsigned int s1_len = strlen(s1); | |
447 | unsigned int s2_len = strlen(s2); | |
448 | unsigned int *p, *q, *r; | |
449 | unsigned int i, j; | |
450 | ||
451 | p = malloc(sizeof(unsigned int) * (s2_len + 1)); | |
452 | q = malloc(sizeof(unsigned int) * (s2_len + 1)); | |
453 | ||
454 | p[0] = 0; | |
455 | for (i = 1; i <= s2_len; i++) | |
456 | p[i] = p[i - 1] + 1; | |
457 | ||
458 | for (i = 1; i <= s1_len; i++) { | |
459 | q[0] = p[0] + 1; | |
460 | for (j = 1; j <= s2_len; j++) { | |
461 | unsigned int sub = p[j - 1]; | |
462 | ||
463 | if (s1[i - 1] != s2[j - 1]) | |
464 | sub++; | |
465 | ||
466 | q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub)); | |
467 | } | |
468 | r = p; | |
469 | p = q; | |
470 | q = r; | |
471 | } | |
472 | ||
473 | i = p[s2_len]; | |
474 | free(p); | |
475 | free(q); | |
476 | return i; | |
477 | } | |
478 | ||
479 | static void show_option_help(struct fio_option *o) | |
fd28ca49 | 480 | { |
fd28ca49 JA |
481 | const char *typehelp[] = { |
482 | "string (opt=bla)", | |
483 | "string with possible k/m/g postfix (opt=4k)", | |
484 | "string with range and postfix (opt=1k-4k)", | |
485 | "string with time postfix (opt=10s)", | |
486 | "string (opt=bla)", | |
487 | "string with dual range (opt=1k-4k,4k-8k)", | |
488 | "integer value (opt=100)", | |
13335ddb | 489 | "boolean value (opt=1)", |
fd28ca49 JA |
490 | "no argument (opt)", |
491 | }; | |
0e9f7fac JA |
492 | |
493 | printf("%20s: %s\n", "type", typehelp[o->type]); | |
494 | printf("%20s: %s\n", "default", o->def ? o->def : "no default"); | |
495 | show_option_range(o); | |
496 | show_option_values(o); | |
497 | } | |
498 | ||
499 | int show_cmd_help(struct fio_option *options, const char *name) | |
500 | { | |
501 | struct fio_option *o, *closest; | |
502 | unsigned int best_dist; | |
29fc6afe | 503 | int found = 0; |
320beefe JA |
504 | int show_all = 0; |
505 | ||
506 | if (!name || !strcmp(name, "all")) | |
507 | show_all = 1; | |
fd28ca49 | 508 | |
0e9f7fac JA |
509 | closest = NULL; |
510 | best_dist = -1; | |
4945ba12 | 511 | for (o = &options[0]; o->name; o++) { |
320beefe JA |
512 | int match = 0; |
513 | ||
0e9f7fac JA |
514 | if (name) { |
515 | if (!strcmp(name, o->name)) | |
516 | match = 1; | |
517 | else { | |
518 | unsigned int dist; | |
519 | ||
520 | dist = string_distance(name, o->name); | |
521 | if (dist < best_dist) { | |
522 | best_dist = dist; | |
523 | closest = o; | |
524 | } | |
525 | } | |
526 | } | |
fd28ca49 JA |
527 | |
528 | if (show_all || match) { | |
29fc6afe | 529 | found = 1; |
ec1aee01 | 530 | printf("%20s: %s\n", o->name, o->help); |
4945ba12 JA |
531 | if (show_all) |
532 | continue; | |
fd28ca49 JA |
533 | } |
534 | ||
70df2f19 JA |
535 | if (!match) |
536 | continue; | |
537 | ||
0e9f7fac | 538 | show_option_help(o); |
fd28ca49 JA |
539 | } |
540 | ||
29fc6afe JA |
541 | if (found) |
542 | return 0; | |
fd28ca49 | 543 | |
0e9f7fac JA |
544 | printf("No such command: %s", name); |
545 | if (closest) { | |
546 | printf(" - showing closest match\n"); | |
547 | printf("%20s: %s\n", closest->name, closest->help); | |
548 | show_option_help(closest); | |
549 | } else | |
550 | printf("\n"); | |
551 | ||
29fc6afe | 552 | return 1; |
fd28ca49 | 553 | } |
ee738499 | 554 | |
13335ddb JA |
555 | /* |
556 | * Handle parsing of default parameters. | |
557 | */ | |
ee738499 JA |
558 | void fill_default_options(void *data, struct fio_option *options) |
559 | { | |
4945ba12 | 560 | struct fio_option *o; |
ee738499 | 561 | |
4945ba12 | 562 | for (o = &options[0]; o->name; o++) |
ee738499 JA |
563 | if (o->def) |
564 | handle_option(o, o->def, data); | |
ee738499 | 565 | } |
13335ddb JA |
566 | |
567 | /* | |
568 | * Sanitize the options structure. For now it just sets min/max for bool | |
5b0a8880 | 569 | * values and whether both callback and offsets are given. |
13335ddb JA |
570 | */ |
571 | void options_init(struct fio_option *options) | |
572 | { | |
4945ba12 | 573 | struct fio_option *o; |
13335ddb | 574 | |
4945ba12 | 575 | for (o = &options[0]; o->name; o++) { |
13335ddb JA |
576 | if (o->type == FIO_OPT_BOOL) { |
577 | o->minval = 0; | |
578 | o->maxval = 1; | |
579 | } | |
b1ec1da6 JA |
580 | if (!o->cb && !o->off1) |
581 | fprintf(stderr, "Option %s: neither cb nor offset given\n", o->name); | |
582 | if (o->type == FIO_OPT_STR) | |
583 | continue; | |
5b0a8880 JA |
584 | if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4)) |
585 | fprintf(stderr, "Option %s: both cb and offset given\n", o->name); | |
13335ddb JA |
586 | } |
587 | } |