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 JA |
58 | |
59 | *val = strtoul(str, NULL, 10); | |
60 | if (*val == ULONG_MAX && errno == ERANGE) | |
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; | |
cb2c86fd | 135 | |
33963c6c JA |
136 | o++; |
137 | } | |
cb2c86fd | 138 | |
e1f36503 | 139 | return NULL; |
cb2c86fd JA |
140 | } |
141 | ||
17abbe89 JA |
142 | #define val_store(ptr, val, off, data) \ |
143 | do { \ | |
144 | ptr = td_var((data), (off)); \ | |
145 | *ptr = (val); \ | |
146 | } while (0) | |
147 | ||
f90eff5a | 148 | static int __handle_option(struct fio_option *o, const char *ptr, void *data, |
787f7e95 | 149 | int first, int more) |
cb2c86fd | 150 | { |
63f29372 JA |
151 | int il, *ilp; |
152 | long long ull, *ullp; | |
153 | long ul1, ul2; | |
b4692828 | 154 | char **cp; |
e1f36503 | 155 | int ret = 0, is_time = 0; |
cb2c86fd | 156 | |
08e26e35 JA |
157 | if (!ptr && o->type != FIO_OPT_STR_SET) { |
158 | fprintf(stderr, "Option %s requires an argument\n", o->name); | |
159 | return 1; | |
160 | } | |
161 | ||
e1f36503 JA |
162 | switch (o->type) { |
163 | case FIO_OPT_STR: { | |
164 | fio_opt_str_fn *fn = o->cb; | |
cb2c86fd | 165 | |
e1f36503 JA |
166 | ret = fn(data, ptr); |
167 | break; | |
168 | } | |
169 | case FIO_OPT_STR_VAL_TIME: | |
170 | is_time = 1; | |
75e6f36f JA |
171 | case FIO_OPT_STR_VAL: |
172 | case FIO_OPT_STR_VAL_INT: { | |
e1f36503 JA |
173 | fio_opt_str_val_fn *fn = o->cb; |
174 | ||
175 | if (is_time) | |
176 | ret = check_str_time(ptr, &ull); | |
177 | else | |
178 | ret = check_str_bytes(ptr, &ull); | |
179 | ||
180 | if (ret) | |
181 | break; | |
182 | ||
ee738499 JA |
183 | if (o->maxval && ull > o->maxval) |
184 | ull = o->maxval; | |
185 | if (o->minval && ull < o->minval) | |
186 | ull = o->minval; | |
e1f36503 JA |
187 | |
188 | if (fn) | |
189 | ret = fn(data, &ull); | |
190 | else { | |
75e6f36f | 191 | if (o->type == FIO_OPT_STR_VAL_INT) { |
17abbe89 JA |
192 | if (first) |
193 | val_store(ilp, ull, o->off1, data); | |
787f7e95 | 194 | if (!more && o->off2) |
17abbe89 | 195 | val_store(ilp, ull, o->off2, data); |
75e6f36f | 196 | } else { |
17abbe89 JA |
197 | if (first) |
198 | val_store(ullp, ull, o->off1, data); | |
787f7e95 | 199 | if (!more && o->off2) |
17abbe89 | 200 | val_store(ullp, ull, o->off2, data); |
75e6f36f | 201 | } |
e1f36503 JA |
202 | } |
203 | break; | |
204 | } | |
205 | case FIO_OPT_STR_STORE: | |
206 | cp = td_var(data, o->off1); | |
207 | *cp = strdup(ptr); | |
208 | break; | |
209 | case FIO_OPT_RANGE: { | |
b765a372 | 210 | char tmp[128]; |
e1f36503 JA |
211 | char *p1, *p2; |
212 | ||
0bbab0e7 | 213 | strncpy(tmp, ptr, sizeof(tmp) - 1); |
b765a372 JA |
214 | |
215 | p1 = strchr(tmp, '-'); | |
e1f36503 JA |
216 | if (!p1) { |
217 | ret = 1; | |
218 | break; | |
219 | } | |
220 | ||
221 | p2 = p1 + 1; | |
222 | *p1 = '\0'; | |
b765a372 | 223 | p1 = tmp; |
e1f36503 JA |
224 | |
225 | ret = 1; | |
226 | if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) { | |
227 | ret = 0; | |
e1f36503 | 228 | if (ul1 > ul2) { |
f90eff5a JA |
229 | unsigned long foo = ul1; |
230 | ||
231 | ul1 = ul2; | |
232 | ul2 = foo; | |
233 | } | |
234 | ||
235 | if (first) { | |
17abbe89 JA |
236 | val_store(ilp, ul1, o->off1, data); |
237 | val_store(ilp, ul2, o->off2, data); | |
238 | } | |
787f7e95 | 239 | if (!more && o->off3 && o->off4) { |
17abbe89 JA |
240 | val_store(ilp, ul1, o->off3, data); |
241 | val_store(ilp, ul2, o->off4, data); | |
e1f36503 | 242 | } |
17abbe89 JA |
243 | } |
244 | ||
e1f36503 JA |
245 | break; |
246 | } | |
13335ddb JA |
247 | case FIO_OPT_INT: |
248 | case FIO_OPT_BOOL: { | |
e1f36503 JA |
249 | fio_opt_int_fn *fn = o->cb; |
250 | ||
251 | ret = check_int(ptr, &il); | |
252 | if (ret) | |
253 | break; | |
254 | ||
63f29372 | 255 | if (o->maxval && il > (int) o->maxval) |
ee738499 JA |
256 | il = o->maxval; |
257 | if (o->minval && il < o->minval) | |
258 | il = o->minval; | |
e1f36503 JA |
259 | |
260 | if (fn) | |
261 | ret = fn(data, &il); | |
262 | else { | |
17abbe89 JA |
263 | if (first) |
264 | val_store(ilp, il, o->off1, data); | |
787f7e95 | 265 | if (!more && o->off2) |
17abbe89 | 266 | val_store(ilp, il, o->off2, data); |
e1f36503 JA |
267 | } |
268 | break; | |
269 | } | |
270 | case FIO_OPT_STR_SET: { | |
271 | fio_opt_str_set_fn *fn = o->cb; | |
272 | ||
273 | if (fn) | |
274 | ret = fn(data); | |
275 | else { | |
17abbe89 JA |
276 | if (first) |
277 | val_store(ilp, 1, o->off1, data); | |
787f7e95 | 278 | if (!more && o->off2) |
17abbe89 | 279 | val_store(ilp, 1, o->off2, data); |
e1f36503 JA |
280 | } |
281 | break; | |
282 | } | |
283 | default: | |
1e97cce9 | 284 | fprintf(stderr, "Bad option type %u\n", o->type); |
e1f36503 JA |
285 | ret = 1; |
286 | } | |
cb2c86fd | 287 | |
e1f36503 | 288 | return ret; |
cb2c86fd JA |
289 | } |
290 | ||
f90eff5a JA |
291 | static int handle_option(struct fio_option *o, const char *ptr, void *data) |
292 | { | |
92b586f8 | 293 | const char *ptr2 = NULL; |
787f7e95 | 294 | int r1, r2; |
f90eff5a JA |
295 | |
296 | /* | |
787f7e95 JA |
297 | * See if we have a second set of parameters, hidden after a comma. |
298 | * Do this before parsing the first round, to check if we should | |
299 | * copy set 1 options to set 2. | |
f90eff5a | 300 | */ |
92b586f8 JA |
301 | if (ptr) |
302 | ptr2 = strchr(ptr, ','); | |
787f7e95 JA |
303 | |
304 | /* | |
305 | * Don't return early if parsing the first option fails - if | |
306 | * we are doing multiple arguments, we can allow the first one | |
307 | * being empty. | |
308 | */ | |
309 | r1 = __handle_option(o, ptr, data, 1, !!ptr2); | |
310 | ||
f90eff5a | 311 | if (!ptr2) |
787f7e95 | 312 | return r1; |
f90eff5a JA |
313 | |
314 | ptr2++; | |
787f7e95 JA |
315 | r2 = __handle_option(o, ptr2, data, 0, 0); |
316 | ||
317 | return r1 && r2; | |
f90eff5a JA |
318 | } |
319 | ||
b4692828 JA |
320 | int parse_cmd_option(const char *opt, const char *val, |
321 | struct fio_option *options, void *data) | |
322 | { | |
323 | struct fio_option *o; | |
324 | ||
325 | o = find_option(options, opt); | |
326 | if (!o) { | |
327 | fprintf(stderr, "Bad option %s\n", opt); | |
328 | return 1; | |
329 | } | |
330 | ||
b1508cf9 JA |
331 | if (!handle_option(o, val, data)) |
332 | return 0; | |
333 | ||
334 | fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val); | |
335 | return 1; | |
b4692828 JA |
336 | } |
337 | ||
e1f36503 | 338 | int parse_option(const char *opt, struct fio_option *options, void *data) |
cb2c86fd | 339 | { |
b4692828 | 340 | struct fio_option *o; |
e1f36503 JA |
341 | char *pre, *post; |
342 | char tmp[64]; | |
343 | ||
0bbab0e7 | 344 | strncpy(tmp, opt, sizeof(tmp) - 1); |
e1f36503 JA |
345 | |
346 | pre = strchr(tmp, '='); | |
347 | if (pre) { | |
348 | post = pre; | |
349 | *pre = '\0'; | |
350 | pre = tmp; | |
351 | post++; | |
352 | o = find_option(options, pre); | |
353 | } else { | |
354 | o = find_option(options, tmp); | |
355 | post = NULL; | |
356 | } | |
cb2c86fd | 357 | |
e1f36503 JA |
358 | if (!o) { |
359 | fprintf(stderr, "Bad option %s\n", tmp); | |
360 | return 1; | |
361 | } | |
362 | ||
b1508cf9 JA |
363 | if (!handle_option(o, post, data)) |
364 | return 0; | |
365 | ||
366 | fprintf(stderr, "fio: failed parsing %s\n", opt); | |
367 | return 1; | |
e1f36503 | 368 | } |
fd28ca49 | 369 | |
15f7918f JA |
370 | static void show_option_range(struct fio_option *o) |
371 | { | |
372 | if (!o->minval && !o->maxval) | |
373 | return; | |
374 | ||
375 | printf("%16s: min=%d, max=%d\n", "range", o->minval, o->maxval); | |
376 | } | |
377 | ||
378 | static void show_option_values(struct fio_option *o) | |
379 | { | |
380 | const char *msg; | |
381 | int i = 0; | |
382 | ||
383 | if (!o->posval) | |
384 | return; | |
385 | ||
386 | do { | |
387 | msg = o->posval[i]; | |
388 | if (!msg) | |
389 | break; | |
390 | ||
391 | if (!i) | |
392 | printf("%16s: ", "valid values"); | |
393 | ||
394 | printf("%s,", msg); | |
395 | i++; | |
396 | } while (1); | |
397 | ||
398 | if (i) | |
399 | printf("\n"); | |
400 | } | |
401 | ||
fd28ca49 JA |
402 | int show_cmd_help(struct fio_option *options, const char *name) |
403 | { | |
404 | int show_all = !strcmp(name, "all"); | |
405 | struct fio_option *o = &options[0]; | |
406 | const char *typehelp[] = { | |
407 | "string (opt=bla)", | |
408 | "string with possible k/m/g postfix (opt=4k)", | |
409 | "string with range and postfix (opt=1k-4k)", | |
410 | "string with time postfix (opt=10s)", | |
411 | "string (opt=bla)", | |
412 | "string with dual range (opt=1k-4k,4k-8k)", | |
413 | "integer value (opt=100)", | |
13335ddb | 414 | "boolean value (opt=1)", |
fd28ca49 JA |
415 | "no argument (opt)", |
416 | }; | |
29fc6afe | 417 | int found = 0; |
fd28ca49 JA |
418 | |
419 | while (o->name) { | |
420 | int match = !strcmp(name, o->name); | |
421 | ||
422 | if (show_all || match) { | |
29fc6afe | 423 | found = 1; |
facba0e5 | 424 | printf("%16s: %s\n", o->name, o->help); |
ee738499 | 425 | if (match) { |
facba0e5 JA |
426 | printf("%16s: %s\n", "type", typehelp[o->type]); |
427 | printf("%16s: %s\n", "default", o->def ? o->def : "no default"); | |
15f7918f JA |
428 | show_option_range(o); |
429 | show_option_values(o); | |
ee738499 | 430 | } |
fd28ca49 JA |
431 | } |
432 | ||
433 | o++; | |
434 | } | |
435 | ||
29fc6afe JA |
436 | if (found) |
437 | return 0; | |
fd28ca49 | 438 | |
29fc6afe JA |
439 | printf("No such command: %s\n", name); |
440 | return 1; | |
fd28ca49 | 441 | } |
ee738499 | 442 | |
13335ddb JA |
443 | /* |
444 | * Handle parsing of default parameters. | |
445 | */ | |
ee738499 JA |
446 | void fill_default_options(void *data, struct fio_option *options) |
447 | { | |
448 | struct fio_option *o = &options[0]; | |
449 | ||
450 | while (o->name) { | |
451 | if (o->def) | |
452 | handle_option(o, o->def, data); | |
453 | o++; | |
454 | } | |
455 | } | |
13335ddb JA |
456 | |
457 | /* | |
458 | * Sanitize the options structure. For now it just sets min/max for bool | |
459 | * values. | |
460 | */ | |
461 | void options_init(struct fio_option *options) | |
462 | { | |
463 | struct fio_option *o = &options[0]; | |
464 | ||
465 | while (o->name) { | |
466 | if (o->type == FIO_OPT_BOOL) { | |
467 | o->minval = 0; | |
468 | o->maxval = 1; | |
469 | } | |
470 | o++; | |
471 | } | |
472 | } |