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> | |
88b5a391 | 11 | #include <stdlib.h> |
cb2c86fd JA |
12 | |
13 | #include "parse.h" | |
a3d741fa | 14 | #include "debug.h" |
cb2c86fd | 15 | |
3b8b7135 JA |
16 | static struct fio_option *fio_options; |
17 | ||
f085737f JA |
18 | static int vp_cmp(const void *p1, const void *p2) |
19 | { | |
20 | const struct value_pair *vp1 = p1; | |
21 | const struct value_pair *vp2 = p2; | |
22 | ||
23 | return strlen(vp2->ival) - strlen(vp1->ival); | |
24 | } | |
25 | ||
26 | static void posval_sort(struct fio_option *o, struct value_pair *vpmap) | |
27 | { | |
28 | const struct value_pair *vp; | |
29 | int entries; | |
30 | ||
31 | memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair)); | |
32 | ||
33 | for (entries = 0; entries < PARSE_MAX_VP; entries++) { | |
34 | vp = &o->posval[entries]; | |
35 | if (!vp->ival || vp->ival[0] == '\0') | |
36 | break; | |
37 | ||
38 | memcpy(&vpmap[entries], vp, sizeof(*vp)); | |
39 | } | |
40 | ||
41 | qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp); | |
42 | } | |
43 | ||
b1ec1da6 JA |
44 | static void show_option_range(struct fio_option *o) |
45 | { | |
46 | if (!o->minval && !o->maxval) | |
47 | return; | |
48 | ||
ec1aee01 | 49 | printf("%20s: min=%d, max=%d\n", "range", o->minval, o->maxval); |
b1ec1da6 JA |
50 | } |
51 | ||
52 | static void show_option_values(struct fio_option *o) | |
53 | { | |
b1ec1da6 JA |
54 | int i = 0; |
55 | ||
56 | do { | |
7837213b | 57 | const struct value_pair *vp = &o->posval[i]; |
b1ec1da6 | 58 | |
7837213b JA |
59 | if (!vp->ival) |
60 | break; | |
b1ec1da6 | 61 | |
7837213b JA |
62 | printf("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival); |
63 | if (vp->help) | |
64 | printf(" %s", vp->help); | |
65 | printf("\n"); | |
b1ec1da6 JA |
66 | i++; |
67 | } while (i < PARSE_MAX_VP); | |
68 | ||
69 | if (i) | |
70 | printf("\n"); | |
71 | } | |
72 | ||
cb2c86fd JA |
73 | static unsigned long get_mult_time(char c) |
74 | { | |
75 | switch (c) { | |
5ec10eaa JA |
76 | case 'm': |
77 | case 'M': | |
78 | return 60; | |
79 | case 'h': | |
80 | case 'H': | |
81 | return 60 * 60; | |
82 | case 'd': | |
83 | case 'D': | |
84 | return 24 * 60 * 60; | |
85 | default: | |
86 | return 1; | |
cb2c86fd JA |
87 | } |
88 | } | |
89 | ||
90 | static unsigned long get_mult_bytes(char c) | |
91 | { | |
92 | switch (c) { | |
5ec10eaa JA |
93 | case 'k': |
94 | case 'K': | |
95 | return 1024; | |
96 | case 'm': | |
97 | case 'M': | |
98 | return 1024 * 1024; | |
99 | case 'g': | |
100 | case 'G': | |
101 | return 1024 * 1024 * 1024; | |
102 | case 'e': | |
103 | case 'E': | |
104 | return 1024 * 1024 * 1024 * 1024UL; | |
105 | default: | |
106 | return 1; | |
cb2c86fd JA |
107 | } |
108 | } | |
109 | ||
110 | /* | |
e1f36503 | 111 | * convert string into decimal value, noting any size suffix |
cb2c86fd | 112 | */ |
564ca972 | 113 | int str_to_decimal(const char *str, long long *val, int kilo) |
cb2c86fd | 114 | { |
cb2c86fd JA |
115 | int len; |
116 | ||
cb2c86fd | 117 | len = strlen(str); |
f90eff5a JA |
118 | if (!len) |
119 | return 1; | |
cb2c86fd | 120 | |
675de85a | 121 | *val = strtoll(str, NULL, 10); |
cda866ca | 122 | if (*val == LONG_MAX && errno == ERANGE) |
cb2c86fd JA |
123 | return 1; |
124 | ||
125 | if (kilo) | |
126 | *val *= get_mult_bytes(str[len - 1]); | |
127 | else | |
128 | *val *= get_mult_time(str[len - 1]); | |
787f7e95 | 129 | |
cb2c86fd JA |
130 | return 0; |
131 | } | |
132 | ||
63f29372 | 133 | static int check_str_bytes(const char *p, long long *val) |
cb2c86fd | 134 | { |
cb2c86fd JA |
135 | return str_to_decimal(p, val, 1); |
136 | } | |
137 | ||
63f29372 | 138 | static int check_str_time(const char *p, long long *val) |
cb2c86fd | 139 | { |
cb2c86fd JA |
140 | return str_to_decimal(p, val, 0); |
141 | } | |
142 | ||
143 | void strip_blank_front(char **p) | |
144 | { | |
145 | char *s = *p; | |
146 | ||
147 | while (isspace(*s)) | |
148 | s++; | |
4d651dad JA |
149 | |
150 | *p = s; | |
cb2c86fd JA |
151 | } |
152 | ||
153 | void strip_blank_end(char *p) | |
154 | { | |
523bfadb JA |
155 | char *s; |
156 | ||
157 | s = strchr(p, ';'); | |
158 | if (s) | |
159 | *s = '\0'; | |
160 | s = strchr(p, '#'); | |
161 | if (s) | |
162 | *s = '\0'; | |
163 | if (s) | |
164 | p = s; | |
165 | ||
7f7e6e59 JA |
166 | s = p + strlen(p); |
167 | while ((isspace(*s) || iscntrl(*s)) && (s > p)) | |
cb2c86fd JA |
168 | s--; |
169 | ||
170 | *(s + 1) = '\0'; | |
171 | } | |
172 | ||
63f29372 | 173 | static int check_range_bytes(const char *str, long *val) |
cb2c86fd JA |
174 | { |
175 | char suffix; | |
176 | ||
787f7e95 JA |
177 | if (!strlen(str)) |
178 | return 1; | |
179 | ||
cb2c86fd JA |
180 | if (sscanf(str, "%lu%c", val, &suffix) == 2) { |
181 | *val *= get_mult_bytes(suffix); | |
182 | return 0; | |
183 | } | |
184 | ||
185 | if (sscanf(str, "%lu", val) == 1) | |
186 | return 0; | |
187 | ||
188 | return 1; | |
189 | } | |
190 | ||
63f29372 | 191 | static int check_int(const char *p, int *val) |
cb2c86fd | 192 | { |
787f7e95 JA |
193 | if (!strlen(p)) |
194 | return 1; | |
d78ee463 | 195 | if (strstr(p, "0x") || strstr(p, "0X")) { |
a61bdfd8 JA |
196 | if (sscanf(p, "%x", val) == 1) |
197 | return 0; | |
198 | } else { | |
199 | if (sscanf(p, "%u", val) == 1) | |
200 | return 0; | |
201 | } | |
cb2c86fd | 202 | |
e1f36503 JA |
203 | return 1; |
204 | } | |
cb2c86fd | 205 | |
e1f36503 JA |
206 | static struct fio_option *find_option(struct fio_option *options, |
207 | const char *opt) | |
208 | { | |
4945ba12 | 209 | struct fio_option *o; |
cb2c86fd | 210 | |
4945ba12 | 211 | for (o = &options[0]; o->name; o++) { |
e1f36503 JA |
212 | if (!strcmp(o->name, opt)) |
213 | return o; | |
03b74b3e JA |
214 | else if (o->alias && !strcmp(o->alias, opt)) |
215 | return o; | |
33963c6c | 216 | } |
cb2c86fd | 217 | |
e1f36503 | 218 | return NULL; |
cb2c86fd JA |
219 | } |
220 | ||
17abbe89 JA |
221 | #define val_store(ptr, val, off, data) \ |
222 | do { \ | |
223 | ptr = td_var((data), (off)); \ | |
224 | *ptr = (val); \ | |
225 | } while (0) | |
226 | ||
f90eff5a | 227 | static int __handle_option(struct fio_option *o, const char *ptr, void *data, |
787f7e95 | 228 | int first, int more) |
cb2c86fd | 229 | { |
63f29372 JA |
230 | int il, *ilp; |
231 | long long ull, *ullp; | |
232 | long ul1, ul2; | |
b4692828 | 233 | char **cp; |
e1f36503 | 234 | int ret = 0, is_time = 0; |
cb2c86fd | 235 | |
a3d741fa JA |
236 | dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name, |
237 | o->type, ptr); | |
238 | ||
08e26e35 JA |
239 | if (!ptr && o->type != FIO_OPT_STR_SET) { |
240 | fprintf(stderr, "Option %s requires an argument\n", o->name); | |
241 | return 1; | |
242 | } | |
243 | ||
e1f36503 JA |
244 | switch (o->type) { |
245 | case FIO_OPT_STR: { | |
246 | fio_opt_str_fn *fn = o->cb; | |
b1ec1da6 | 247 | const struct value_pair *vp; |
f085737f | 248 | struct value_pair posval[PARSE_MAX_VP]; |
b1ec1da6 JA |
249 | int i; |
250 | ||
f085737f JA |
251 | posval_sort(o, posval); |
252 | ||
b1ec1da6 | 253 | for (i = 0; i < PARSE_MAX_VP; i++) { |
f085737f | 254 | vp = &posval[i]; |
b1ec1da6 JA |
255 | if (!vp->ival || vp->ival[0] == '\0') |
256 | break; | |
6612a27b | 257 | ret = 1; |
b1ec1da6 JA |
258 | if (!strncmp(vp->ival, ptr, strlen(vp->ival))) { |
259 | ret = 0; | |
260 | if (!o->off1) | |
261 | break; | |
262 | val_store(ilp, vp->oval, o->off1, data); | |
263 | break; | |
264 | } | |
265 | } | |
cb2c86fd | 266 | |
b1ec1da6 JA |
267 | if (ret) |
268 | show_option_values(o); | |
269 | else if (fn) | |
270 | ret = fn(data, ptr); | |
e1f36503 JA |
271 | break; |
272 | } | |
273 | case FIO_OPT_STR_VAL_TIME: | |
274 | is_time = 1; | |
75e6f36f JA |
275 | case FIO_OPT_STR_VAL: |
276 | case FIO_OPT_STR_VAL_INT: { | |
e1f36503 JA |
277 | fio_opt_str_val_fn *fn = o->cb; |
278 | ||
279 | if (is_time) | |
280 | ret = check_str_time(ptr, &ull); | |
281 | else | |
282 | ret = check_str_bytes(ptr, &ull); | |
283 | ||
284 | if (ret) | |
285 | break; | |
286 | ||
db8e0165 | 287 | if (o->maxval && ull > o->maxval) { |
5ec10eaa JA |
288 | fprintf(stderr, "max value out of range: %lld" |
289 | " (%d max)\n", ull, o->maxval); | |
db8e0165 JA |
290 | return 1; |
291 | } | |
292 | if (o->minval && ull < o->minval) { | |
5ec10eaa JA |
293 | fprintf(stderr, "min value out of range: %lld" |
294 | " (%d min)\n", ull, o->minval); | |
db8e0165 JA |
295 | return 1; |
296 | } | |
e1f36503 JA |
297 | |
298 | if (fn) | |
299 | ret = fn(data, &ull); | |
300 | else { | |
75e6f36f | 301 | if (o->type == FIO_OPT_STR_VAL_INT) { |
17abbe89 JA |
302 | if (first) |
303 | val_store(ilp, ull, o->off1, data); | |
787f7e95 | 304 | if (!more && o->off2) |
17abbe89 | 305 | val_store(ilp, ull, o->off2, data); |
75e6f36f | 306 | } else { |
17abbe89 JA |
307 | if (first) |
308 | val_store(ullp, ull, o->off1, data); | |
787f7e95 | 309 | if (!more && o->off2) |
17abbe89 | 310 | val_store(ullp, ull, o->off2, data); |
75e6f36f | 311 | } |
e1f36503 JA |
312 | } |
313 | break; | |
314 | } | |
af52b345 JA |
315 | case FIO_OPT_STR_STORE: { |
316 | fio_opt_str_fn *fn = o->cb; | |
317 | ||
e1f36503 JA |
318 | cp = td_var(data, o->off1); |
319 | *cp = strdup(ptr); | |
af52b345 JA |
320 | if (fn) { |
321 | ret = fn(data, ptr); | |
322 | if (ret) { | |
323 | free(*cp); | |
324 | *cp = NULL; | |
325 | } | |
326 | } | |
e1f36503 | 327 | break; |
af52b345 | 328 | } |
e1f36503 | 329 | case FIO_OPT_RANGE: { |
b765a372 | 330 | char tmp[128]; |
e1f36503 JA |
331 | char *p1, *p2; |
332 | ||
0bbab0e7 | 333 | strncpy(tmp, ptr, sizeof(tmp) - 1); |
b765a372 JA |
334 | |
335 | p1 = strchr(tmp, '-'); | |
e1f36503 | 336 | if (!p1) { |
0c9baf91 JA |
337 | p1 = strchr(tmp, ':'); |
338 | if (!p1) { | |
339 | ret = 1; | |
340 | break; | |
341 | } | |
e1f36503 JA |
342 | } |
343 | ||
344 | p2 = p1 + 1; | |
345 | *p1 = '\0'; | |
b765a372 | 346 | p1 = tmp; |
e1f36503 JA |
347 | |
348 | ret = 1; | |
5ec10eaa JA |
349 | if (!check_range_bytes(p1, &ul1) && |
350 | !check_range_bytes(p2, &ul2)) { | |
e1f36503 | 351 | ret = 0; |
e1f36503 | 352 | if (ul1 > ul2) { |
f90eff5a JA |
353 | unsigned long foo = ul1; |
354 | ||
355 | ul1 = ul2; | |
356 | ul2 = foo; | |
357 | } | |
358 | ||
359 | if (first) { | |
17abbe89 JA |
360 | val_store(ilp, ul1, o->off1, data); |
361 | val_store(ilp, ul2, o->off2, data); | |
362 | } | |
97e8cd44 | 363 | if (o->off3 && o->off4) { |
17abbe89 JA |
364 | val_store(ilp, ul1, o->off3, data); |
365 | val_store(ilp, ul2, o->off4, data); | |
e1f36503 | 366 | } |
17abbe89 JA |
367 | } |
368 | ||
e1f36503 JA |
369 | break; |
370 | } | |
13335ddb JA |
371 | case FIO_OPT_INT: |
372 | case FIO_OPT_BOOL: { | |
e1f36503 JA |
373 | fio_opt_int_fn *fn = o->cb; |
374 | ||
375 | ret = check_int(ptr, &il); | |
376 | if (ret) | |
377 | break; | |
378 | ||
db8e0165 | 379 | if (o->maxval && il > (int) o->maxval) { |
5ec10eaa JA |
380 | fprintf(stderr, "max value out of range: %d (%d max)\n", |
381 | il, o->maxval); | |
db8e0165 JA |
382 | return 1; |
383 | } | |
384 | if (o->minval && il < o->minval) { | |
5ec10eaa JA |
385 | fprintf(stderr, "min value out of range: %d (%d min)\n", |
386 | il, o->minval); | |
db8e0165 JA |
387 | return 1; |
388 | } | |
e1f36503 | 389 | |
76a43db4 JA |
390 | if (o->neg) |
391 | il = !il; | |
392 | ||
e1f36503 JA |
393 | if (fn) |
394 | ret = fn(data, &il); | |
395 | else { | |
17abbe89 JA |
396 | if (first) |
397 | val_store(ilp, il, o->off1, data); | |
787f7e95 | 398 | if (!more && o->off2) |
17abbe89 | 399 | val_store(ilp, il, o->off2, data); |
e1f36503 JA |
400 | } |
401 | break; | |
402 | } | |
403 | case FIO_OPT_STR_SET: { | |
404 | fio_opt_str_set_fn *fn = o->cb; | |
405 | ||
406 | if (fn) | |
407 | ret = fn(data); | |
408 | else { | |
17abbe89 JA |
409 | if (first) |
410 | val_store(ilp, 1, o->off1, data); | |
787f7e95 | 411 | if (!more && o->off2) |
17abbe89 | 412 | val_store(ilp, 1, o->off2, data); |
e1f36503 JA |
413 | } |
414 | break; | |
415 | } | |
15ca150e JA |
416 | case FIO_OPT_DEPRECATED: |
417 | fprintf(stdout, "Option %s is deprecated\n", o->name); | |
418 | break; | |
e1f36503 | 419 | default: |
1e97cce9 | 420 | fprintf(stderr, "Bad option type %u\n", o->type); |
e1f36503 JA |
421 | ret = 1; |
422 | } | |
cb2c86fd | 423 | |
e1f36503 | 424 | return ret; |
cb2c86fd JA |
425 | } |
426 | ||
f90eff5a JA |
427 | static int handle_option(struct fio_option *o, const char *ptr, void *data) |
428 | { | |
92b586f8 | 429 | const char *ptr2 = NULL; |
787f7e95 | 430 | int r1, r2; |
f90eff5a | 431 | |
a3d741fa JA |
432 | dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, ptr); |
433 | ||
f90eff5a | 434 | /* |
787f7e95 JA |
435 | * See if we have a second set of parameters, hidden after a comma. |
436 | * Do this before parsing the first round, to check if we should | |
437 | * copy set 1 options to set 2. | |
f90eff5a | 438 | */ |
ad231bc4 JB |
439 | if (ptr && |
440 | (o->type != FIO_OPT_STR_STORE) && | |
441 | (o->type != FIO_OPT_STR)) { | |
92b586f8 | 442 | ptr2 = strchr(ptr, ','); |
0c9baf91 JA |
443 | if (!ptr2) |
444 | ptr2 = strchr(ptr, ':'); | |
b486f76a JA |
445 | if (!ptr2) |
446 | ptr2 = strchr(ptr, '-'); | |
0c9baf91 | 447 | } |
787f7e95 JA |
448 | |
449 | /* | |
450 | * Don't return early if parsing the first option fails - if | |
451 | * we are doing multiple arguments, we can allow the first one | |
452 | * being empty. | |
453 | */ | |
454 | r1 = __handle_option(o, ptr, data, 1, !!ptr2); | |
455 | ||
f90eff5a | 456 | if (!ptr2) |
787f7e95 | 457 | return r1; |
f90eff5a JA |
458 | |
459 | ptr2++; | |
787f7e95 JA |
460 | r2 = __handle_option(o, ptr2, data, 0, 0); |
461 | ||
462 | return r1 && r2; | |
f90eff5a JA |
463 | } |
464 | ||
3b8b7135 JA |
465 | static struct fio_option *get_option(const char *opt, |
466 | struct fio_option *options, char **post) | |
467 | { | |
468 | struct fio_option *o; | |
469 | char *ret; | |
470 | ||
471 | ret = strchr(opt, '='); | |
472 | if (ret) { | |
473 | *post = ret; | |
474 | *ret = '\0'; | |
475 | ret = (char *) opt; | |
476 | (*post)++; | |
477 | o = find_option(options, ret); | |
478 | } else { | |
479 | o = find_option(options, opt); | |
480 | *post = NULL; | |
481 | } | |
482 | ||
483 | return o; | |
484 | } | |
485 | ||
486 | static int opt_cmp(const void *p1, const void *p2) | |
487 | { | |
488 | struct fio_option *o1, *o2; | |
489 | char *s1, *s2, *foo; | |
490 | int ret; | |
491 | ||
492 | s1 = strdup(*((char **) p1)); | |
493 | s2 = strdup(*((char **) p2)); | |
494 | ||
495 | o1 = get_option(s1, fio_options, &foo); | |
496 | o2 = get_option(s2, fio_options, &foo); | |
497 | ||
498 | if ((!o1 && o2) || (o1 && !o2)) | |
499 | ret = 0; | |
500 | else | |
501 | ret = o2->prio - o1->prio; | |
502 | ||
503 | free(s1); | |
504 | free(s2); | |
505 | return ret; | |
506 | } | |
507 | ||
508 | void sort_options(char **opts, struct fio_option *options, int num_opts) | |
509 | { | |
510 | fio_options = options; | |
511 | qsort(opts, num_opts, sizeof(char *), opt_cmp); | |
512 | fio_options = NULL; | |
513 | } | |
514 | ||
b4692828 JA |
515 | int parse_cmd_option(const char *opt, const char *val, |
516 | struct fio_option *options, void *data) | |
517 | { | |
518 | struct fio_option *o; | |
519 | ||
520 | o = find_option(options, opt); | |
521 | if (!o) { | |
522 | fprintf(stderr, "Bad option %s\n", opt); | |
523 | return 1; | |
524 | } | |
525 | ||
b1508cf9 JA |
526 | if (!handle_option(o, val, data)) |
527 | return 0; | |
528 | ||
529 | fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val); | |
530 | return 1; | |
b4692828 JA |
531 | } |
532 | ||
88b5a391 AC |
533 | /* |
534 | * Return a copy of the input string with substrings of the form ${VARNAME} | |
535 | * substituted with the value of the environment variable VARNAME. The | |
536 | * substitution always occurs, even if VARNAME is empty or the corresponding | |
537 | * environment variable undefined. | |
538 | */ | |
539 | static char *option_dup_subs(const char *opt) | |
540 | { | |
541 | char out[OPT_LEN_MAX+1]; | |
542 | char in[OPT_LEN_MAX+1]; | |
543 | char *outptr = out; | |
544 | char *inptr = in; | |
545 | char *ch1, *ch2, *env; | |
546 | ssize_t nchr = OPT_LEN_MAX; | |
547 | size_t envlen; | |
548 | ||
549 | in[OPT_LEN_MAX] = '\0'; | |
550 | strncpy(in, opt, OPT_LEN_MAX); | |
551 | ||
552 | while (*inptr && nchr > 0) { | |
553 | if (inptr[0] == '$' && inptr[1] == '{') { | |
554 | ch2 = strchr(inptr, '}'); | |
555 | if (ch2 && inptr+1 < ch2) { | |
556 | ch1 = inptr+2; | |
557 | inptr = ch2+1; | |
558 | *ch2 = '\0'; | |
559 | ||
560 | env = getenv(ch1); | |
561 | if (env) { | |
562 | envlen = strlen(env); | |
563 | if (envlen <= nchr) { | |
564 | memcpy(outptr, env, envlen); | |
565 | outptr += envlen; | |
566 | nchr -= envlen; | |
567 | } | |
568 | } | |
569 | ||
570 | continue; | |
571 | } | |
572 | } | |
573 | ||
574 | *outptr++ = *inptr++; | |
575 | --nchr; | |
576 | } | |
577 | ||
578 | *outptr = '\0'; | |
579 | return strdup(out); | |
580 | } | |
581 | ||
e1f36503 | 582 | int parse_option(const char *opt, struct fio_option *options, void *data) |
cb2c86fd | 583 | { |
b4692828 | 584 | struct fio_option *o; |
3b8b7135 | 585 | char *post, *tmp; |
e1f36503 | 586 | |
88b5a391 | 587 | tmp = option_dup_subs(opt); |
e1f36503 | 588 | |
3b8b7135 | 589 | o = get_option(tmp, options, &post); |
e1f36503 JA |
590 | if (!o) { |
591 | fprintf(stderr, "Bad option %s\n", tmp); | |
0401bca6 | 592 | free(tmp); |
e1f36503 JA |
593 | return 1; |
594 | } | |
595 | ||
0401bca6 JA |
596 | if (!handle_option(o, post, data)) { |
597 | free(tmp); | |
b1508cf9 | 598 | return 0; |
0401bca6 | 599 | } |
b1508cf9 JA |
600 | |
601 | fprintf(stderr, "fio: failed parsing %s\n", opt); | |
0401bca6 | 602 | free(tmp); |
b1508cf9 | 603 | return 1; |
e1f36503 | 604 | } |
fd28ca49 | 605 | |
0e9f7fac JA |
606 | /* |
607 | * Option match, levenshtein distance. Handy for not quite remembering what | |
608 | * the option name is. | |
609 | */ | |
610 | static int string_distance(const char *s1, const char *s2) | |
611 | { | |
612 | unsigned int s1_len = strlen(s1); | |
613 | unsigned int s2_len = strlen(s2); | |
614 | unsigned int *p, *q, *r; | |
615 | unsigned int i, j; | |
616 | ||
617 | p = malloc(sizeof(unsigned int) * (s2_len + 1)); | |
618 | q = malloc(sizeof(unsigned int) * (s2_len + 1)); | |
619 | ||
620 | p[0] = 0; | |
621 | for (i = 1; i <= s2_len; i++) | |
622 | p[i] = p[i - 1] + 1; | |
623 | ||
624 | for (i = 1; i <= s1_len; i++) { | |
625 | q[0] = p[0] + 1; | |
626 | for (j = 1; j <= s2_len; j++) { | |
627 | unsigned int sub = p[j - 1]; | |
628 | ||
629 | if (s1[i - 1] != s2[j - 1]) | |
630 | sub++; | |
631 | ||
632 | q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub)); | |
633 | } | |
634 | r = p; | |
635 | p = q; | |
636 | q = r; | |
637 | } | |
638 | ||
639 | i = p[s2_len]; | |
640 | free(p); | |
641 | free(q); | |
642 | return i; | |
643 | } | |
644 | ||
645 | static void show_option_help(struct fio_option *o) | |
fd28ca49 | 646 | { |
fd28ca49 JA |
647 | const char *typehelp[] = { |
648 | "string (opt=bla)", | |
649 | "string with possible k/m/g postfix (opt=4k)", | |
650 | "string with range and postfix (opt=1k-4k)", | |
651 | "string with time postfix (opt=10s)", | |
652 | "string (opt=bla)", | |
653 | "string with dual range (opt=1k-4k,4k-8k)", | |
654 | "integer value (opt=100)", | |
13335ddb | 655 | "boolean value (opt=1)", |
fd28ca49 JA |
656 | "no argument (opt)", |
657 | }; | |
0e9f7fac | 658 | |
d2bb7fea JA |
659 | if (o->alias) |
660 | printf("%20s: %s\n", "alias", o->alias); | |
661 | ||
0e9f7fac JA |
662 | printf("%20s: %s\n", "type", typehelp[o->type]); |
663 | printf("%20s: %s\n", "default", o->def ? o->def : "no default"); | |
664 | show_option_range(o); | |
665 | show_option_values(o); | |
666 | } | |
667 | ||
afdf9352 JA |
668 | static struct fio_option *find_child(struct fio_option *options, |
669 | struct fio_option *o) | |
670 | { | |
671 | struct fio_option *__o; | |
672 | ||
fdf28744 JA |
673 | for (__o = options + 1; __o->name; __o++) |
674 | if (__o->parent && !strcmp(__o->parent, o->name)) | |
afdf9352 JA |
675 | return __o; |
676 | ||
677 | return NULL; | |
678 | } | |
679 | ||
323d9113 JA |
680 | static void __print_option(struct fio_option *o, struct fio_option *org, |
681 | int level) | |
afdf9352 JA |
682 | { |
683 | char name[256], *p; | |
323d9113 | 684 | int depth; |
afdf9352 JA |
685 | |
686 | if (!o) | |
687 | return; | |
ef9aff52 JA |
688 | if (!org) |
689 | org = o; | |
5ec10eaa | 690 | |
afdf9352 | 691 | p = name; |
323d9113 JA |
692 | depth = level; |
693 | while (depth--) | |
694 | p += sprintf(p, "%s", " "); | |
afdf9352 JA |
695 | |
696 | sprintf(p, "%s", o->name); | |
697 | ||
698 | printf("%-24s: %s\n", name, o->help); | |
323d9113 JA |
699 | } |
700 | ||
701 | static void print_option(struct fio_option *o) | |
702 | { | |
703 | struct fio_option *parent; | |
704 | struct fio_option *__o; | |
705 | unsigned int printed; | |
706 | unsigned int level; | |
707 | ||
708 | __print_option(o, NULL, 0); | |
709 | parent = o; | |
710 | level = 0; | |
711 | do { | |
712 | level++; | |
713 | printed = 0; | |
714 | ||
715 | while ((__o = find_child(o, parent)) != NULL) { | |
716 | __print_option(__o, o, level); | |
717 | o = __o; | |
718 | printed++; | |
719 | } | |
720 | ||
721 | parent = o; | |
722 | } while (printed); | |
afdf9352 JA |
723 | } |
724 | ||
0e9f7fac JA |
725 | int show_cmd_help(struct fio_option *options, const char *name) |
726 | { | |
727 | struct fio_option *o, *closest; | |
728 | unsigned int best_dist; | |
29fc6afe | 729 | int found = 0; |
320beefe JA |
730 | int show_all = 0; |
731 | ||
732 | if (!name || !strcmp(name, "all")) | |
733 | show_all = 1; | |
fd28ca49 | 734 | |
0e9f7fac JA |
735 | closest = NULL; |
736 | best_dist = -1; | |
4945ba12 | 737 | for (o = &options[0]; o->name; o++) { |
320beefe JA |
738 | int match = 0; |
739 | ||
15ca150e JA |
740 | if (o->type == FIO_OPT_DEPRECATED) |
741 | continue; | |
742 | ||
0e9f7fac | 743 | if (name) { |
7f9348f8 JA |
744 | if (!strcmp(name, o->name) || |
745 | (o->alias && !strcmp(name, o->alias))) | |
0e9f7fac JA |
746 | match = 1; |
747 | else { | |
748 | unsigned int dist; | |
749 | ||
750 | dist = string_distance(name, o->name); | |
751 | if (dist < best_dist) { | |
752 | best_dist = dist; | |
753 | closest = o; | |
754 | } | |
755 | } | |
756 | } | |
fd28ca49 JA |
757 | |
758 | if (show_all || match) { | |
29fc6afe | 759 | found = 1; |
c167dedc | 760 | if (match) |
afdf9352 | 761 | printf("%24s: %s\n", o->name, o->help); |
c167dedc | 762 | if (show_all) { |
afdf9352 | 763 | if (!o->parent) |
323d9113 | 764 | print_option(o); |
4945ba12 | 765 | continue; |
c167dedc | 766 | } |
fd28ca49 JA |
767 | } |
768 | ||
70df2f19 JA |
769 | if (!match) |
770 | continue; | |
771 | ||
0e9f7fac | 772 | show_option_help(o); |
fd28ca49 JA |
773 | } |
774 | ||
29fc6afe JA |
775 | if (found) |
776 | return 0; | |
fd28ca49 | 777 | |
0e9f7fac JA |
778 | printf("No such command: %s", name); |
779 | if (closest) { | |
780 | printf(" - showing closest match\n"); | |
781 | printf("%20s: %s\n", closest->name, closest->help); | |
782 | show_option_help(closest); | |
783 | } else | |
784 | printf("\n"); | |
785 | ||
29fc6afe | 786 | return 1; |
fd28ca49 | 787 | } |
ee738499 | 788 | |
13335ddb JA |
789 | /* |
790 | * Handle parsing of default parameters. | |
791 | */ | |
ee738499 JA |
792 | void fill_default_options(void *data, struct fio_option *options) |
793 | { | |
4945ba12 | 794 | struct fio_option *o; |
ee738499 | 795 | |
a3d741fa JA |
796 | dprint(FD_PARSE, "filling default options\n"); |
797 | ||
4945ba12 | 798 | for (o = &options[0]; o->name; o++) |
ee738499 JA |
799 | if (o->def) |
800 | handle_option(o, o->def, data); | |
ee738499 | 801 | } |
13335ddb JA |
802 | |
803 | /* | |
804 | * Sanitize the options structure. For now it just sets min/max for bool | |
5b0a8880 | 805 | * values and whether both callback and offsets are given. |
13335ddb JA |
806 | */ |
807 | void options_init(struct fio_option *options) | |
808 | { | |
4945ba12 | 809 | struct fio_option *o; |
13335ddb | 810 | |
a3d741fa JA |
811 | dprint(FD_PARSE, "init options\n"); |
812 | ||
4945ba12 | 813 | for (o = &options[0]; o->name; o++) { |
15ca150e JA |
814 | if (o->type == FIO_OPT_DEPRECATED) |
815 | continue; | |
13335ddb JA |
816 | if (o->type == FIO_OPT_BOOL) { |
817 | o->minval = 0; | |
818 | o->maxval = 1; | |
819 | } | |
5ec10eaa JA |
820 | if (o->type == FIO_OPT_STR_SET && o->def) { |
821 | fprintf(stderr, "Option %s: string set option with" | |
822 | " default will always be true\n", | |
823 | o->name); | |
824 | } | |
825 | if (!o->cb && !o->off1) { | |
826 | fprintf(stderr, "Option %s: neither cb nor offset" | |
827 | " given\n", o->name); | |
828 | } | |
af52b345 | 829 | if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE) |
b1ec1da6 | 830 | continue; |
5ec10eaa JA |
831 | if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4)) { |
832 | fprintf(stderr, "Option %s: both cb and offset given\n", | |
833 | o->name); | |
834 | } | |
13335ddb JA |
835 | } |
836 | } |