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 | ||
14 | static unsigned long get_mult_time(char c) | |
15 | { | |
16 | switch (c) { | |
17 | case 'm': | |
18 | case 'M': | |
19 | return 60; | |
20 | case 'h': | |
21 | case 'H': | |
22 | return 60 * 60; | |
23 | case 'd': | |
24 | case 'D': | |
25 | return 24 * 60 * 60; | |
26 | default: | |
27 | return 1; | |
28 | } | |
29 | } | |
30 | ||
31 | static unsigned long get_mult_bytes(char c) | |
32 | { | |
33 | switch (c) { | |
34 | case 'k': | |
35 | case 'K': | |
36 | return 1024; | |
37 | case 'm': | |
38 | case 'M': | |
39 | return 1024 * 1024; | |
40 | case 'g': | |
41 | case 'G': | |
42 | return 1024 * 1024 * 1024; | |
43 | default: | |
44 | return 1; | |
45 | } | |
46 | } | |
47 | ||
48 | /* | |
e1f36503 | 49 | * convert string into decimal value, noting any size suffix |
cb2c86fd | 50 | */ |
63f29372 | 51 | static int str_to_decimal(const char *str, long long *val, int kilo) |
cb2c86fd | 52 | { |
cb2c86fd JA |
53 | int len; |
54 | ||
cb2c86fd | 55 | len = strlen(str); |
f90eff5a JA |
56 | if (!len) |
57 | return 1; | |
cb2c86fd | 58 | |
cda866ca JA |
59 | *val = strtol(str, NULL, 10); |
60 | if (*val == LONG_MAX && errno == ERANGE) | |
cb2c86fd JA |
61 | return 1; |
62 | ||
63 | if (kilo) | |
64 | *val *= get_mult_bytes(str[len - 1]); | |
65 | else | |
66 | *val *= get_mult_time(str[len - 1]); | |
787f7e95 | 67 | |
cb2c86fd JA |
68 | return 0; |
69 | } | |
70 | ||
63f29372 | 71 | static int check_str_bytes(const char *p, long long *val) |
cb2c86fd | 72 | { |
cb2c86fd JA |
73 | return str_to_decimal(p, val, 1); |
74 | } | |
75 | ||
63f29372 | 76 | static int check_str_time(const char *p, long long *val) |
cb2c86fd | 77 | { |
cb2c86fd JA |
78 | return str_to_decimal(p, val, 0); |
79 | } | |
80 | ||
81 | void strip_blank_front(char **p) | |
82 | { | |
83 | char *s = *p; | |
84 | ||
85 | while (isspace(*s)) | |
86 | s++; | |
87 | } | |
88 | ||
89 | void strip_blank_end(char *p) | |
90 | { | |
91 | char *s = p + strlen(p) - 1; | |
92 | ||
93 | while (isspace(*s) || iscntrl(*s)) | |
94 | s--; | |
95 | ||
96 | *(s + 1) = '\0'; | |
97 | } | |
98 | ||
63f29372 | 99 | static int check_range_bytes(const char *str, long *val) |
cb2c86fd JA |
100 | { |
101 | char suffix; | |
102 | ||
787f7e95 JA |
103 | if (!strlen(str)) |
104 | return 1; | |
105 | ||
cb2c86fd JA |
106 | if (sscanf(str, "%lu%c", val, &suffix) == 2) { |
107 | *val *= get_mult_bytes(suffix); | |
108 | return 0; | |
109 | } | |
110 | ||
111 | if (sscanf(str, "%lu", val) == 1) | |
112 | return 0; | |
113 | ||
114 | return 1; | |
115 | } | |
116 | ||
63f29372 | 117 | static int check_int(const char *p, int *val) |
cb2c86fd | 118 | { |
787f7e95 JA |
119 | if (!strlen(p)) |
120 | return 1; | |
e1f36503 JA |
121 | if (sscanf(p, "%u", val) == 1) |
122 | return 0; | |
cb2c86fd | 123 | |
e1f36503 JA |
124 | return 1; |
125 | } | |
cb2c86fd | 126 | |
e1f36503 JA |
127 | static struct fio_option *find_option(struct fio_option *options, |
128 | const char *opt) | |
129 | { | |
33963c6c | 130 | struct fio_option *o = &options[0]; |
cb2c86fd | 131 | |
33963c6c | 132 | while (o->name) { |
e1f36503 JA |
133 | if (!strcmp(o->name, opt)) |
134 | return o; | |
03b74b3e JA |
135 | else if (o->alias && !strcmp(o->alias, opt)) |
136 | return o; | |
cb2c86fd | 137 | |
33963c6c JA |
138 | o++; |
139 | } | |
cb2c86fd | 140 | |
e1f36503 | 141 | return NULL; |
cb2c86fd JA |
142 | } |
143 | ||
17abbe89 JA |
144 | #define val_store(ptr, val, off, data) \ |
145 | do { \ | |
146 | ptr = td_var((data), (off)); \ | |
147 | *ptr = (val); \ | |
148 | } while (0) | |
149 | ||
f90eff5a | 150 | static int __handle_option(struct fio_option *o, const char *ptr, void *data, |
787f7e95 | 151 | int first, int more) |
cb2c86fd | 152 | { |
63f29372 JA |
153 | int il, *ilp; |
154 | long long ull, *ullp; | |
155 | long ul1, ul2; | |
b4692828 | 156 | char **cp; |
e1f36503 | 157 | int ret = 0, is_time = 0; |
cb2c86fd | 158 | |
08e26e35 JA |
159 | if (!ptr && o->type != FIO_OPT_STR_SET) { |
160 | fprintf(stderr, "Option %s requires an argument\n", o->name); | |
161 | return 1; | |
162 | } | |
163 | ||
e1f36503 JA |
164 | switch (o->type) { |
165 | case FIO_OPT_STR: { | |
166 | fio_opt_str_fn *fn = o->cb; | |
cb2c86fd | 167 | |
e1f36503 JA |
168 | ret = fn(data, ptr); |
169 | break; | |
170 | } | |
171 | case FIO_OPT_STR_VAL_TIME: | |
172 | is_time = 1; | |
75e6f36f JA |
173 | case FIO_OPT_STR_VAL: |
174 | case FIO_OPT_STR_VAL_INT: { | |
e1f36503 JA |
175 | fio_opt_str_val_fn *fn = o->cb; |
176 | ||
177 | if (is_time) | |
178 | ret = check_str_time(ptr, &ull); | |
179 | else | |
180 | ret = check_str_bytes(ptr, &ull); | |
181 | ||
182 | if (ret) | |
183 | break; | |
184 | ||
db8e0165 JA |
185 | if (o->maxval && ull > o->maxval) { |
186 | fprintf(stderr, "max value out of range: %lld (%d max)\n", ull, o->maxval); | |
187 | return 1; | |
188 | } | |
189 | if (o->minval && ull < o->minval) { | |
190 | fprintf(stderr, "min value out of range: %lld (%d min)\n", ull, o->minval); | |
191 | return 1; | |
192 | } | |
e1f36503 JA |
193 | |
194 | if (fn) | |
195 | ret = fn(data, &ull); | |
196 | else { | |
75e6f36f | 197 | if (o->type == FIO_OPT_STR_VAL_INT) { |
17abbe89 JA |
198 | if (first) |
199 | val_store(ilp, ull, o->off1, data); | |
787f7e95 | 200 | if (!more && o->off2) |
17abbe89 | 201 | val_store(ilp, ull, o->off2, data); |
75e6f36f | 202 | } else { |
17abbe89 JA |
203 | if (first) |
204 | val_store(ullp, ull, o->off1, data); | |
787f7e95 | 205 | if (!more && o->off2) |
17abbe89 | 206 | val_store(ullp, ull, o->off2, data); |
75e6f36f | 207 | } |
e1f36503 JA |
208 | } |
209 | break; | |
210 | } | |
211 | case FIO_OPT_STR_STORE: | |
212 | cp = td_var(data, o->off1); | |
213 | *cp = strdup(ptr); | |
214 | break; | |
215 | case FIO_OPT_RANGE: { | |
b765a372 | 216 | char tmp[128]; |
e1f36503 JA |
217 | char *p1, *p2; |
218 | ||
0bbab0e7 | 219 | strncpy(tmp, ptr, sizeof(tmp) - 1); |
b765a372 JA |
220 | |
221 | p1 = strchr(tmp, '-'); | |
e1f36503 JA |
222 | if (!p1) { |
223 | ret = 1; | |
224 | break; | |
225 | } | |
226 | ||
227 | p2 = p1 + 1; | |
228 | *p1 = '\0'; | |
b765a372 | 229 | p1 = tmp; |
e1f36503 JA |
230 | |
231 | ret = 1; | |
232 | if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) { | |
233 | ret = 0; | |
e1f36503 | 234 | if (ul1 > ul2) { |
f90eff5a JA |
235 | unsigned long foo = ul1; |
236 | ||
237 | ul1 = ul2; | |
238 | ul2 = foo; | |
239 | } | |
240 | ||
241 | if (first) { | |
17abbe89 JA |
242 | val_store(ilp, ul1, o->off1, data); |
243 | val_store(ilp, ul2, o->off2, data); | |
244 | } | |
787f7e95 | 245 | if (!more && o->off3 && o->off4) { |
17abbe89 JA |
246 | val_store(ilp, ul1, o->off3, data); |
247 | val_store(ilp, ul2, o->off4, data); | |
e1f36503 | 248 | } |
17abbe89 JA |
249 | } |
250 | ||
e1f36503 JA |
251 | break; |
252 | } | |
13335ddb JA |
253 | case FIO_OPT_INT: |
254 | case FIO_OPT_BOOL: { | |
e1f36503 JA |
255 | fio_opt_int_fn *fn = o->cb; |
256 | ||
257 | ret = check_int(ptr, &il); | |
258 | if (ret) | |
259 | break; | |
260 | ||
db8e0165 JA |
261 | if (o->maxval && il > (int) o->maxval) { |
262 | fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval); | |
263 | return 1; | |
264 | } | |
265 | if (o->minval && il < o->minval) { | |
266 | fprintf(stderr, "min value out of range: %d (%d min)\n", il, o->minval); | |
267 | return 1; | |
268 | } | |
e1f36503 JA |
269 | |
270 | if (fn) | |
271 | ret = fn(data, &il); | |
272 | else { | |
17abbe89 JA |
273 | if (first) |
274 | val_store(ilp, il, o->off1, data); | |
787f7e95 | 275 | if (!more && o->off2) |
17abbe89 | 276 | val_store(ilp, il, o->off2, data); |
e1f36503 JA |
277 | } |
278 | break; | |
279 | } | |
280 | case FIO_OPT_STR_SET: { | |
281 | fio_opt_str_set_fn *fn = o->cb; | |
282 | ||
283 | if (fn) | |
284 | ret = fn(data); | |
285 | else { | |
17abbe89 JA |
286 | if (first) |
287 | val_store(ilp, 1, o->off1, data); | |
787f7e95 | 288 | if (!more && o->off2) |
17abbe89 | 289 | val_store(ilp, 1, o->off2, data); |
e1f36503 JA |
290 | } |
291 | break; | |
292 | } | |
293 | default: | |
1e97cce9 | 294 | fprintf(stderr, "Bad option type %u\n", o->type); |
e1f36503 JA |
295 | ret = 1; |
296 | } | |
cb2c86fd | 297 | |
e1f36503 | 298 | return ret; |
cb2c86fd JA |
299 | } |
300 | ||
f90eff5a JA |
301 | static int handle_option(struct fio_option *o, const char *ptr, void *data) |
302 | { | |
92b586f8 | 303 | const char *ptr2 = NULL; |
787f7e95 | 304 | int r1, r2; |
f90eff5a JA |
305 | |
306 | /* | |
787f7e95 JA |
307 | * See if we have a second set of parameters, hidden after a comma. |
308 | * Do this before parsing the first round, to check if we should | |
309 | * copy set 1 options to set 2. | |
f90eff5a | 310 | */ |
92b586f8 JA |
311 | if (ptr) |
312 | ptr2 = strchr(ptr, ','); | |
787f7e95 JA |
313 | |
314 | /* | |
315 | * Don't return early if parsing the first option fails - if | |
316 | * we are doing multiple arguments, we can allow the first one | |
317 | * being empty. | |
318 | */ | |
319 | r1 = __handle_option(o, ptr, data, 1, !!ptr2); | |
320 | ||
f90eff5a | 321 | if (!ptr2) |
787f7e95 | 322 | return r1; |
f90eff5a JA |
323 | |
324 | ptr2++; | |
787f7e95 JA |
325 | r2 = __handle_option(o, ptr2, data, 0, 0); |
326 | ||
327 | return r1 && r2; | |
f90eff5a JA |
328 | } |
329 | ||
b4692828 JA |
330 | int parse_cmd_option(const char *opt, const char *val, |
331 | struct fio_option *options, void *data) | |
332 | { | |
333 | struct fio_option *o; | |
334 | ||
335 | o = find_option(options, opt); | |
336 | if (!o) { | |
337 | fprintf(stderr, "Bad option %s\n", opt); | |
338 | return 1; | |
339 | } | |
340 | ||
b1508cf9 JA |
341 | if (!handle_option(o, val, data)) |
342 | return 0; | |
343 | ||
344 | fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val); | |
345 | return 1; | |
b4692828 JA |
346 | } |
347 | ||
e1f36503 | 348 | int parse_option(const char *opt, struct fio_option *options, void *data) |
cb2c86fd | 349 | { |
b4692828 | 350 | struct fio_option *o; |
e1f36503 JA |
351 | char *pre, *post; |
352 | char tmp[64]; | |
353 | ||
0bbab0e7 | 354 | strncpy(tmp, opt, sizeof(tmp) - 1); |
e1f36503 JA |
355 | |
356 | pre = strchr(tmp, '='); | |
357 | if (pre) { | |
358 | post = pre; | |
359 | *pre = '\0'; | |
360 | pre = tmp; | |
361 | post++; | |
362 | o = find_option(options, pre); | |
363 | } else { | |
364 | o = find_option(options, tmp); | |
365 | post = NULL; | |
366 | } | |
cb2c86fd | 367 | |
e1f36503 JA |
368 | if (!o) { |
369 | fprintf(stderr, "Bad option %s\n", tmp); | |
370 | return 1; | |
371 | } | |
372 | ||
b1508cf9 JA |
373 | if (!handle_option(o, post, data)) |
374 | return 0; | |
375 | ||
376 | fprintf(stderr, "fio: failed parsing %s\n", opt); | |
377 | return 1; | |
e1f36503 | 378 | } |
fd28ca49 | 379 | |
15f7918f JA |
380 | static void show_option_range(struct fio_option *o) |
381 | { | |
382 | if (!o->minval && !o->maxval) | |
383 | return; | |
384 | ||
385 | printf("%16s: min=%d, max=%d\n", "range", o->minval, o->maxval); | |
386 | } | |
387 | ||
388 | static void show_option_values(struct fio_option *o) | |
389 | { | |
390 | const char *msg; | |
391 | int i = 0; | |
392 | ||
393 | if (!o->posval) | |
394 | return; | |
395 | ||
396 | do { | |
397 | msg = o->posval[i]; | |
398 | if (!msg) | |
399 | break; | |
400 | ||
401 | if (!i) | |
402 | printf("%16s: ", "valid values"); | |
403 | ||
404 | printf("%s,", msg); | |
405 | i++; | |
406 | } while (1); | |
407 | ||
408 | if (i) | |
409 | printf("\n"); | |
410 | } | |
411 | ||
fd28ca49 JA |
412 | int show_cmd_help(struct fio_option *options, const char *name) |
413 | { | |
414 | int show_all = !strcmp(name, "all"); | |
415 | struct fio_option *o = &options[0]; | |
416 | const char *typehelp[] = { | |
417 | "string (opt=bla)", | |
418 | "string with possible k/m/g postfix (opt=4k)", | |
419 | "string with range and postfix (opt=1k-4k)", | |
420 | "string with time postfix (opt=10s)", | |
421 | "string (opt=bla)", | |
422 | "string with dual range (opt=1k-4k,4k-8k)", | |
423 | "integer value (opt=100)", | |
13335ddb | 424 | "boolean value (opt=1)", |
fd28ca49 JA |
425 | "no argument (opt)", |
426 | }; | |
29fc6afe | 427 | int found = 0; |
fd28ca49 JA |
428 | |
429 | while (o->name) { | |
430 | int match = !strcmp(name, o->name); | |
431 | ||
432 | if (show_all || match) { | |
29fc6afe | 433 | found = 1; |
facba0e5 | 434 | printf("%16s: %s\n", o->name, o->help); |
ee738499 | 435 | if (match) { |
facba0e5 JA |
436 | printf("%16s: %s\n", "type", typehelp[o->type]); |
437 | printf("%16s: %s\n", "default", o->def ? o->def : "no default"); | |
15f7918f JA |
438 | show_option_range(o); |
439 | show_option_values(o); | |
ee738499 | 440 | } |
fd28ca49 JA |
441 | } |
442 | ||
443 | o++; | |
444 | } | |
445 | ||
29fc6afe JA |
446 | if (found) |
447 | return 0; | |
fd28ca49 | 448 | |
29fc6afe JA |
449 | printf("No such command: %s\n", name); |
450 | return 1; | |
fd28ca49 | 451 | } |
ee738499 | 452 | |
13335ddb JA |
453 | /* |
454 | * Handle parsing of default parameters. | |
455 | */ | |
ee738499 JA |
456 | void fill_default_options(void *data, struct fio_option *options) |
457 | { | |
458 | struct fio_option *o = &options[0]; | |
459 | ||
460 | while (o->name) { | |
461 | if (o->def) | |
462 | handle_option(o, o->def, data); | |
463 | o++; | |
464 | } | |
465 | } | |
13335ddb JA |
466 | |
467 | /* | |
468 | * Sanitize the options structure. For now it just sets min/max for bool | |
469 | * values. | |
470 | */ | |
471 | void options_init(struct fio_option *options) | |
472 | { | |
473 | struct fio_option *o = &options[0]; | |
474 | ||
475 | while (o->name) { | |
476 | if (o->type == FIO_OPT_BOOL) { | |
477 | o->minval = 0; | |
478 | o->maxval = 1; | |
479 | } | |
480 | o++; | |
481 | } | |
482 | } |