exp: fix __pow_finite being undefined
[fio.git] / parse.c
... / ...
CommitLineData
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#include <stdlib.h>
12#include <math.h>
13#include <float.h>
14
15#include "parse.h"
16#include "debug.h"
17#include "options.h"
18#include "minmax.h"
19#include "lib/ieee754.h"
20
21#ifdef CONFIG_ARITHMETIC
22#include "y.tab.h"
23#endif
24
25static struct fio_option *__fio_options;
26
27static int vp_cmp(const void *p1, const void *p2)
28{
29 const struct value_pair *vp1 = p1;
30 const struct value_pair *vp2 = p2;
31
32 return strlen(vp2->ival) - strlen(vp1->ival);
33}
34
35static void posval_sort(struct fio_option *o, struct value_pair *vpmap)
36{
37 const struct value_pair *vp;
38 int entries;
39
40 memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair));
41
42 for (entries = 0; entries < PARSE_MAX_VP; entries++) {
43 vp = &o->posval[entries];
44 if (!vp->ival || vp->ival[0] == '\0')
45 break;
46
47 memcpy(&vpmap[entries], vp, sizeof(*vp));
48 }
49
50 qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
51}
52
53static void show_option_range(struct fio_option *o,
54 int (*logger)(const char *format, ...))
55{
56 if (o->type == FIO_OPT_FLOAT_LIST) {
57 if (o->minfp == DBL_MIN && o->maxfp == DBL_MAX)
58 return;
59
60 logger("%20s: min=%f", "range", o->minfp);
61 if (o->maxfp != DBL_MAX)
62 logger(", max=%f", o->maxfp);
63 logger("\n");
64 } else if (!o->posval[0].ival) {
65 if (!o->minval && !o->maxval)
66 return;
67
68 logger("%20s: min=%d", "range", o->minval);
69 if (o->maxval)
70 logger(", max=%d", o->maxval);
71 logger("\n");
72 }
73}
74
75static void show_option_values(struct fio_option *o)
76{
77 int i;
78
79 for (i = 0; i < PARSE_MAX_VP; i++) {
80 const struct value_pair *vp = &o->posval[i];
81
82 if (!vp->ival)
83 continue;
84
85 log_info("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
86 if (vp->help)
87 log_info(" %s", vp->help);
88 log_info("\n");
89 }
90
91 if (i)
92 log_info("\n");
93}
94
95static void show_option_help(struct fio_option *o, int is_err)
96{
97 const char *typehelp[] = {
98 "invalid",
99 "string (opt=bla)",
100 "string (opt=bla)",
101 "string with possible k/m/g postfix (opt=4k)",
102 "string with time postfix (opt=10s)",
103 "string (opt=bla)",
104 "string with dual range (opt=1k-4k,4k-8k)",
105 "integer value (opt=100)",
106 "boolean value (opt=1)",
107 "list of floating point values separated by ':' (opt=5.9:7.8)",
108 "no argument (opt)",
109 "deprecated",
110 };
111 int (*logger)(const char *format, ...);
112
113 if (is_err)
114 logger = log_err;
115 else
116 logger = log_info;
117
118 if (o->alias)
119 logger("%20s: %s\n", "alias", o->alias);
120
121 logger("%20s: %s\n", "type", typehelp[o->type]);
122 logger("%20s: %s\n", "default", o->def ? o->def : "no default");
123 if (o->prof_name)
124 logger("%20s: only for profile '%s'\n", "valid", o->prof_name);
125 show_option_range(o, logger);
126 show_option_values(o);
127}
128
129static unsigned long long get_mult_time(const char *str, int len,
130 int is_seconds)
131{
132 const char *p = str;
133 char *c;
134 unsigned long long mult = 1;
135
136 /*
137 * Go forward until we hit a non-digit, or +/- sign
138 */
139 while ((p - str) <= len) {
140 if (!isdigit((int) *p) && (*p != '+') && (*p != '-'))
141 break;
142 p++;
143 }
144
145 if (!isalpha((int) *p)) {
146 if (is_seconds)
147 return 1000000UL;
148 else
149 return 1;
150 }
151
152 c = strdup(p);
153 for (int i = 0; i < strlen(c); i++)
154 c[i] = tolower(c[i]);
155
156 if (!strncmp("us", c, 2) || !strncmp("usec", c, 4))
157 mult = 1;
158 else if (!strncmp("ms", c, 2) || !strncmp("msec", c, 4))
159 mult = 1000;
160 else if (!strcmp("s", c))
161 mult = 1000000;
162 else if (!strcmp("m", c))
163 mult = 60 * 1000000UL;
164 else if (!strcmp("h", c))
165 mult = 60 * 60 * 1000000UL;
166 else if (!strcmp("d", c))
167 mult = 24 * 60 * 60 * 1000000UL;
168
169 free(c);
170 return mult;
171}
172
173static int is_separator(char c)
174{
175 switch (c) {
176 case ':':
177 case '-':
178 case ',':
179 case '/':
180 return 1;
181 default:
182 return 0;
183 }
184}
185
186static unsigned long long __get_mult_bytes(const char *p, void *data,
187 int *percent)
188{
189 unsigned int kb_base = fio_get_kb_base(data);
190 unsigned long long ret = 1;
191 unsigned int i, pow = 0, mult = kb_base;
192 char *c;
193
194 if (!p)
195 return 1;
196
197 c = strdup(p);
198
199 for (i = 0; i < strlen(c); i++) {
200 c[i] = tolower(c[i]);
201 if (is_separator(c[i])) {
202 c[i] = '\0';
203 break;
204 }
205 }
206
207 if (!strncmp("pib", c, 3)) {
208 pow = 5;
209 mult = 1000;
210 } else if (!strncmp("tib", c, 3)) {
211 pow = 4;
212 mult = 1000;
213 } else if (!strncmp("gib", c, 3)) {
214 pow = 3;
215 mult = 1000;
216 } else if (!strncmp("mib", c, 3)) {
217 pow = 2;
218 mult = 1000;
219 } else if (!strncmp("kib", c, 3)) {
220 pow = 1;
221 mult = 1000;
222 } else if (!strncmp("p", c, 1) || !strncmp("pb", c, 2))
223 pow = 5;
224 else if (!strncmp("t", c, 1) || !strncmp("tb", c, 2))
225 pow = 4;
226 else if (!strncmp("g", c, 1) || !strncmp("gb", c, 2))
227 pow = 3;
228 else if (!strncmp("m", c, 1) || !strncmp("mb", c, 2))
229 pow = 2;
230 else if (!strncmp("k", c, 1) || !strncmp("kb", c, 2))
231 pow = 1;
232 else if (!strncmp("%", c, 1)) {
233 *percent = 1;
234 free(c);
235 return ret;
236 }
237
238 while (pow--)
239 ret *= (unsigned long long) mult;
240
241 free(c);
242 return ret;
243}
244
245static unsigned long long get_mult_bytes(const char *str, int len, void *data,
246 int *percent)
247{
248 const char *p = str;
249 int digit_seen = 0;
250
251 if (len < 2)
252 return __get_mult_bytes(str, data, percent);
253
254 /*
255 * Go forward until we hit a non-digit, or +/- sign
256 */
257 while ((p - str) <= len) {
258 if (!isdigit((int) *p) &&
259 (((*p != '+') && (*p != '-')) || digit_seen))
260 break;
261 digit_seen |= isdigit((int) *p);
262 p++;
263 }
264
265 if (!isalpha((int) *p) && (*p != '%'))
266 p = NULL;
267
268 return __get_mult_bytes(p, data, percent);
269}
270
271extern int evaluate_arithmetic_expression(const char *buffer, long long *ival,
272 double *dval);
273
274/*
275 * Convert string into a floating number. Return 1 for success and 0 otherwise.
276 */
277int str_to_float(const char *str, double *val)
278{
279#ifdef CONFIG_ARITHMETIC
280 int rc;
281 long long ival;
282 double dval;
283
284 if (str[0] == '(') {
285 rc = evaluate_arithmetic_expression(str, &ival, &dval);
286 if (!rc) {
287 *val = dval;
288 return 1;
289 }
290 }
291#endif
292 return 1 == sscanf(str, "%lf", val);
293}
294
295/*
296 * convert string into decimal value, noting any size suffix
297 */
298int str_to_decimal(const char *str, long long *val, int kilo, void *data,
299 int is_seconds)
300{
301 int len, base;
302 int rc = 1;
303#ifdef CONFIG_ARITHMETIC
304 long long ival;
305 double dval;
306#endif
307
308 len = strlen(str);
309 if (!len)
310 return 1;
311
312#ifdef CONFIG_ARITHMETIC
313 if (str[0] == '(')
314 rc = evaluate_arithmetic_expression(str, &ival, &dval);
315 if (str[0] == '(' && !rc) {
316 if (!kilo && is_seconds)
317 *val = ival / 1000000LL;
318 else
319 *val = ival;
320 }
321#endif
322
323 if (rc == 1) {
324 if (strstr(str, "0x") || strstr(str, "0X"))
325 base = 16;
326 else
327 base = 10;
328
329 *val = strtoll(str, NULL, base);
330 if (*val == LONG_MAX && errno == ERANGE)
331 return 1;
332 }
333
334 if (kilo) {
335 unsigned long long mult;
336 int perc = 0;
337
338 mult = get_mult_bytes(str, len, data, &perc);
339 if (perc)
340 *val = -1ULL - *val;
341 else
342 *val *= mult;
343 } else
344 *val *= get_mult_time(str, len, is_seconds);
345
346 return 0;
347}
348
349int check_str_bytes(const char *p, long long *val, void *data)
350{
351 return str_to_decimal(p, val, 1, data, 0);
352}
353
354int check_str_time(const char *p, long long *val, int is_seconds)
355{
356 return str_to_decimal(p, val, 0, NULL, is_seconds);
357}
358
359void strip_blank_front(char **p)
360{
361 char *s = *p;
362
363 if (!strlen(s))
364 return;
365 while (isspace((int) *s))
366 s++;
367
368 *p = s;
369}
370
371void strip_blank_end(char *p)
372{
373 char *start = p, *s;
374
375 if (!strlen(p))
376 return;
377
378 s = strchr(p, ';');
379 if (s)
380 *s = '\0';
381 s = strchr(p, '#');
382 if (s)
383 *s = '\0';
384 if (s)
385 p = s;
386
387 s = p + strlen(p);
388 while ((isspace((int) *s) || iscntrl((int) *s)) && (s > start))
389 s--;
390
391 *(s + 1) = '\0';
392}
393
394static int check_range_bytes(const char *str, long *val, void *data)
395{
396 long long __val;
397
398 if (!str_to_decimal(str, &__val, 1, data, 0)) {
399 *val = __val;
400 return 0;
401 }
402
403 return 1;
404}
405
406static int check_int(const char *p, int *val)
407{
408 if (!strlen(p))
409 return 1;
410 if (strstr(p, "0x") || strstr(p, "0X")) {
411 if (sscanf(p, "%x", val) == 1)
412 return 0;
413 } else {
414 if (sscanf(p, "%u", val) == 1)
415 return 0;
416 }
417
418 return 1;
419}
420
421static size_t opt_len(const char *str)
422{
423 char *postfix;
424
425 postfix = strchr(str, ':');
426 if (!postfix)
427 return strlen(str);
428
429 return (int)(postfix - str);
430}
431
432static int str_match_len(const struct value_pair *vp, const char *str)
433{
434 return max(strlen(vp->ival), opt_len(str));
435}
436
437#define val_store(ptr, val, off, or, data, o) \
438 do { \
439 ptr = td_var((data), (o), (off)); \
440 if ((or)) \
441 *ptr |= (val); \
442 else \
443 *ptr = (val); \
444 } while (0)
445
446static int __handle_option(struct fio_option *o, const char *ptr, void *data,
447 int first, int more, int curr)
448{
449 int il=0, *ilp;
450 fio_fp64_t *flp;
451 long long ull, *ullp;
452 long ul1, ul2;
453 double uf;
454 char **cp = NULL;
455 int ret = 0, is_time = 0;
456 const struct value_pair *vp;
457 struct value_pair posval[PARSE_MAX_VP];
458 int i, all_skipped = 1;
459
460 dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
461 o->type, ptr);
462
463 if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
464 log_err("Option %s requires an argument\n", o->name);
465 return 1;
466 }
467
468 switch (o->type) {
469 case FIO_OPT_STR:
470 case FIO_OPT_STR_MULTI: {
471 fio_opt_str_fn *fn = o->cb;
472
473 posval_sort(o, posval);
474
475 ret = 1;
476 for (i = 0; i < PARSE_MAX_VP; i++) {
477 vp = &posval[i];
478 if (!vp->ival || vp->ival[0] == '\0')
479 continue;
480 all_skipped = 0;
481 if (!strncmp(vp->ival, ptr, str_match_len(vp, ptr))) {
482 ret = 0;
483 if (o->off1)
484 val_store(ilp, vp->oval, o->off1, vp->orval, data, o);
485 continue;
486 }
487 }
488
489 if (ret && !all_skipped)
490 show_option_values(o);
491 else if (fn)
492 ret = fn(data, ptr);
493 break;
494 }
495 case FIO_OPT_STR_VAL_TIME:
496 is_time = 1;
497 case FIO_OPT_INT:
498 case FIO_OPT_STR_VAL: {
499 fio_opt_str_val_fn *fn = o->cb;
500 char tmp[128], *p;
501
502 strncpy(tmp, ptr, sizeof(tmp) - 1);
503 p = strchr(tmp, ',');
504 if (p)
505 *p = '\0';
506
507 if (is_time)
508 ret = check_str_time(tmp, &ull, o->is_seconds);
509 else
510 ret = check_str_bytes(tmp, &ull, data);
511
512 dprint(FD_PARSE, " ret=%d, out=%llu\n", ret, ull);
513
514 if (ret)
515 break;
516
517 if (o->maxval && ull > o->maxval) {
518 log_err("max value out of range: %llu"
519 " (%u max)\n", ull, o->maxval);
520 return 1;
521 }
522 if (o->minval && ull < o->minval) {
523 log_err("min value out of range: %llu"
524 " (%u min)\n", ull, o->minval);
525 return 1;
526 }
527 if (o->posval[0].ival) {
528 posval_sort(o, posval);
529
530 ret = 1;
531 for (i = 0; i < PARSE_MAX_VP; i++) {
532 vp = &posval[i];
533 if (!vp->ival || vp->ival[0] == '\0')
534 continue;
535 if (vp->oval == ull) {
536 ret = 0;
537 break;
538 }
539 }
540 if (ret) {
541 log_err("fio: value %llu not allowed:\n", ull);
542 show_option_values(o);
543 return 1;
544 }
545 }
546
547 if (fn)
548 ret = fn(data, &ull);
549 else {
550 if (o->type == FIO_OPT_INT) {
551 if (first)
552 val_store(ilp, ull, o->off1, 0, data, o);
553 if (curr == 1) {
554 if (o->off2)
555 val_store(ilp, ull, o->off2, 0, data, o);
556 }
557 if (curr == 2) {
558 if (o->off3)
559 val_store(ilp, ull, o->off3, 0, data, o);
560 }
561 if (!more) {
562 if (curr < 1) {
563 if (o->off2)
564 val_store(ilp, ull, o->off2, 0, data, o);
565 }
566 if (curr < 2) {
567 if (o->off3)
568 val_store(ilp, ull, o->off3, 0, data, o);
569 }
570 }
571 } else {
572 if (first)
573 val_store(ullp, ull, o->off1, 0, data, o);
574 if (!more) {
575 if (o->off2)
576 val_store(ullp, ull, o->off2, 0, data, o);
577 }
578 }
579 }
580 break;
581 }
582 case FIO_OPT_FLOAT_LIST: {
583 char *cp2;
584
585 if (first) {
586 /*
587 ** Initialize precision to 0 and zero out list
588 ** in case specified list is shorter than default
589 */
590 if (o->off2) {
591 ul2 = 0;
592 ilp = td_var(data, o, o->off2);
593 *ilp = ul2;
594 }
595
596 flp = td_var(data, o, o->off1);
597 for(i = 0; i < o->maxlen; i++)
598 flp[i].u.f = 0.0;
599 }
600 if (curr >= o->maxlen) {
601 log_err("the list exceeding max length %d\n",
602 o->maxlen);
603 return 1;
604 }
605 if (!str_to_float(ptr, &uf)) {
606 log_err("not a floating point value: %s\n", ptr);
607 return 1;
608 }
609 if (uf > o->maxfp) {
610 log_err("value out of range: %f"
611 " (range max: %f)\n", uf, o->maxfp);
612 return 1;
613 }
614 if (uf < o->minfp) {
615 log_err("value out of range: %f"
616 " (range min: %f)\n", uf, o->minfp);
617 return 1;
618 }
619
620 flp = td_var(data, o, o->off1);
621 flp[curr].u.f = uf;
622
623 dprint(FD_PARSE, " out=%f\n", uf);
624
625 /*
626 ** Calculate precision for output by counting
627 ** number of digits after period. Find first
628 ** period in entire remaining list each time
629 */
630 cp2 = strchr(ptr, '.');
631 if (cp2 != NULL) {
632 int len = 0;
633
634 while (*++cp2 != '\0' && *cp2 >= '0' && *cp2 <= '9')
635 len++;
636
637 if (o->off2) {
638 ilp = td_var(data, o, o->off2);
639 if (len > *ilp)
640 *ilp = len;
641 }
642 }
643
644 break;
645 }
646 case FIO_OPT_STR_STORE: {
647 fio_opt_str_fn *fn = o->cb;
648
649 if (!strlen(ptr))
650 return 1;
651
652 if (o->off1) {
653 cp = td_var(data, o, o->off1);
654 *cp = strdup(ptr);
655 }
656
657 if (fn)
658 ret = fn(data, ptr);
659 else if (o->posval[0].ival) {
660 posval_sort(o, posval);
661
662 ret = 1;
663 for (i = 0; i < PARSE_MAX_VP; i++) {
664 vp = &posval[i];
665 if (!vp->ival || vp->ival[0] == '\0' || !cp)
666 continue;
667 all_skipped = 0;
668 if (!strncmp(vp->ival, ptr, str_match_len(vp, ptr))) {
669 char *rest;
670
671 ret = 0;
672 if (vp->cb)
673 fn = vp->cb;
674 rest = strstr(*cp ?: ptr, ":");
675 if (rest) {
676 if (*cp)
677 *rest = '\0';
678 ptr = rest + 1;
679 } else
680 ptr = NULL;
681 break;
682 }
683 }
684 }
685
686 if (!all_skipped) {
687 if (ret && !*cp)
688 show_option_values(o);
689 else if (ret && *cp)
690 ret = 0;
691 else if (fn && ptr)
692 ret = fn(data, ptr);
693 }
694
695 break;
696 }
697 case FIO_OPT_RANGE: {
698 char tmp[128];
699 char *p1, *p2;
700
701 strncpy(tmp, ptr, sizeof(tmp) - 1);
702
703 /* Handle bsrange with separate read,write values: */
704 p1 = strchr(tmp, ',');
705 if (p1)
706 *p1 = '\0';
707
708 p1 = strchr(tmp, '-');
709 if (!p1) {
710 p1 = strchr(tmp, ':');
711 if (!p1) {
712 ret = 1;
713 break;
714 }
715 }
716
717 p2 = p1 + 1;
718 *p1 = '\0';
719 p1 = tmp;
720
721 ret = 1;
722 if (!check_range_bytes(p1, &ul1, data) &&
723 !check_range_bytes(p2, &ul2, data)) {
724 ret = 0;
725 if (ul1 > ul2) {
726 unsigned long foo = ul1;
727
728 ul1 = ul2;
729 ul2 = foo;
730 }
731
732 if (first) {
733 val_store(ilp, ul1, o->off1, 0, data, o);
734 val_store(ilp, ul2, o->off2, 0, data, o);
735 }
736 if (curr == 1) {
737 if (o->off3 && o->off4) {
738 val_store(ilp, ul1, o->off3, 0, data, o);
739 val_store(ilp, ul2, o->off4, 0, data, o);
740 }
741 }
742 if (curr == 2) {
743 if (o->off5 && o->off6) {
744 val_store(ilp, ul1, o->off5, 0, data, o);
745 val_store(ilp, ul2, o->off6, 0, data, o);
746 }
747 }
748 if (!more) {
749 if (curr < 1) {
750 if (o->off3 && o->off4) {
751 val_store(ilp, ul1, o->off3, 0, data, o);
752 val_store(ilp, ul2, o->off4, 0, data, o);
753 }
754 }
755 if (curr < 2) {
756 if (o->off5 && o->off6) {
757 val_store(ilp, ul1, o->off5, 0, data, o);
758 val_store(ilp, ul2, o->off6, 0, data, o);
759 }
760 }
761 }
762 }
763
764 break;
765 }
766 case FIO_OPT_BOOL:
767 case FIO_OPT_STR_SET: {
768 fio_opt_int_fn *fn = o->cb;
769
770 if (ptr)
771 ret = check_int(ptr, &il);
772 else if (o->type == FIO_OPT_BOOL)
773 ret = 1;
774 else
775 il = 1;
776
777 dprint(FD_PARSE, " ret=%d, out=%d\n", ret, il);
778
779 if (ret)
780 break;
781
782 if (o->maxval && il > (int) o->maxval) {
783 log_err("max value out of range: %d (%d max)\n",
784 il, o->maxval);
785 return 1;
786 }
787 if (o->minval && il < o->minval) {
788 log_err("min value out of range: %d (%d min)\n",
789 il, o->minval);
790 return 1;
791 }
792
793 if (o->neg)
794 il = !il;
795
796 if (fn)
797 ret = fn(data, &il);
798 else {
799 if (first)
800 val_store(ilp, il, o->off1, 0, data, o);
801 if (!more) {
802 if (o->off2)
803 val_store(ilp, il, o->off2, 0, data, o);
804 }
805 }
806 break;
807 }
808 case FIO_OPT_DEPRECATED:
809 log_info("Option %s is deprecated\n", o->name);
810 ret = 1;
811 break;
812 default:
813 log_err("Bad option type %u\n", o->type);
814 ret = 1;
815 }
816
817 if (ret)
818 return ret;
819
820 if (o->verify) {
821 ret = o->verify(o, data);
822 if (ret) {
823 log_err("Correct format for offending option\n");
824 log_err("%20s: %s\n", o->name, o->help);
825 show_option_help(o, 1);
826 }
827 }
828
829 return ret;
830}
831
832static int handle_option(struct fio_option *o, const char *__ptr, void *data)
833{
834 char *o_ptr, *ptr, *ptr2;
835 int ret, done;
836
837 dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);
838
839 o_ptr = ptr = NULL;
840 if (__ptr)
841 o_ptr = ptr = strdup(__ptr);
842
843 /*
844 * See if we have another set of parameters, hidden after a comma.
845 * Do this before parsing this round, to check if we should
846 * copy set 1 options to set 2.
847 */
848 done = 0;
849 ret = 1;
850 do {
851 int __ret;
852
853 ptr2 = NULL;
854 if (ptr &&
855 (o->type != FIO_OPT_STR_STORE) &&
856 (o->type != FIO_OPT_STR) &&
857 (o->type != FIO_OPT_FLOAT_LIST)) {
858 ptr2 = strchr(ptr, ',');
859 if (ptr2 && *(ptr2 + 1) == '\0')
860 *ptr2 = '\0';
861 if (o->type != FIO_OPT_STR_MULTI && o->type != FIO_OPT_RANGE) {
862 if (!ptr2)
863 ptr2 = strchr(ptr, ':');
864 if (!ptr2)
865 ptr2 = strchr(ptr, '-');
866 }
867 } else if (ptr && o->type == FIO_OPT_FLOAT_LIST) {
868 ptr2 = strchr(ptr, ':');
869 }
870
871 /*
872 * Don't return early if parsing the first option fails - if
873 * we are doing multiple arguments, we can allow the first one
874 * being empty.
875 */
876 __ret = __handle_option(o, ptr, data, !done, !!ptr2, done);
877 if (ret)
878 ret = __ret;
879
880 if (!ptr2)
881 break;
882
883 ptr = ptr2 + 1;
884 done++;
885 } while (1);
886
887 if (o_ptr)
888 free(o_ptr);
889 return ret;
890}
891
892static struct fio_option *get_option(char *opt,
893 struct fio_option *options, char **post)
894{
895 struct fio_option *o;
896 char *ret;
897
898 ret = strchr(opt, '=');
899 if (ret) {
900 *post = ret;
901 *ret = '\0';
902 ret = opt;
903 (*post)++;
904 strip_blank_end(ret);
905 o = find_option(options, ret);
906 } else {
907 o = find_option(options, opt);
908 *post = NULL;
909 }
910
911 return o;
912}
913
914static int opt_cmp(const void *p1, const void *p2)
915{
916 struct fio_option *o;
917 char *s, *foo;
918 int prio1, prio2;
919
920 prio1 = prio2 = 0;
921
922 if (*(char **)p1) {
923 s = strdup(*((char **) p1));
924 o = get_option(s, __fio_options, &foo);
925 if (o)
926 prio1 = o->prio;
927 free(s);
928 }
929 if (*(char **)p2) {
930 s = strdup(*((char **) p2));
931 o = get_option(s, __fio_options, &foo);
932 if (o)
933 prio2 = o->prio;
934 free(s);
935 }
936
937 return prio2 - prio1;
938}
939
940void sort_options(char **opts, struct fio_option *options, int num_opts)
941{
942 __fio_options = options;
943 qsort(opts, num_opts, sizeof(char *), opt_cmp);
944 __fio_options = NULL;
945}
946
947int parse_cmd_option(const char *opt, const char *val,
948 struct fio_option *options, void *data)
949{
950 struct fio_option *o;
951
952 o = find_option(options, opt);
953 if (!o) {
954 log_err("Bad option <%s>\n", opt);
955 return 1;
956 }
957
958 if (!handle_option(o, val, data))
959 return 0;
960
961 log_err("fio: failed parsing %s=%s\n", opt, val);
962 return 1;
963}
964
965int parse_option(char *opt, const char *input,
966 struct fio_option *options, struct fio_option **o, void *data,
967 int dump_cmdline)
968{
969 char *post;
970
971 if (!opt) {
972 log_err("fio: failed parsing %s\n", input);
973 *o = NULL;
974 return 1;
975 }
976
977 *o = get_option(opt, options, &post);
978 if (!*o) {
979 if (post) {
980 int len = strlen(opt);
981 if (opt + len + 1 != post)
982 memmove(opt + len + 1, post, strlen(post));
983 opt[len] = '=';
984 }
985 return 1;
986 }
987
988 if (handle_option(*o, post, data)) {
989 log_err("fio: failed parsing %s\n", input);
990 return 1;
991 }
992
993 if (dump_cmdline) {
994 const char *delim;
995
996 if (!strcmp("description", (*o)->name))
997 delim = "\"";
998 else
999 delim = "";
1000
1001 log_info("--%s%s", (*o)->name, post ? "" : " ");
1002 if (post)
1003 log_info("=%s%s%s ", delim, post, delim);
1004 }
1005
1006 return 0;
1007}
1008
1009/*
1010 * Option match, levenshtein distance. Handy for not quite remembering what
1011 * the option name is.
1012 */
1013static int string_distance(const char *s1, const char *s2)
1014{
1015 unsigned int s1_len = strlen(s1);
1016 unsigned int s2_len = strlen(s2);
1017 unsigned int *p, *q, *r;
1018 unsigned int i, j;
1019
1020 p = malloc(sizeof(unsigned int) * (s2_len + 1));
1021 q = malloc(sizeof(unsigned int) * (s2_len + 1));
1022
1023 p[0] = 0;
1024 for (i = 1; i <= s2_len; i++)
1025 p[i] = p[i - 1] + 1;
1026
1027 for (i = 1; i <= s1_len; i++) {
1028 q[0] = p[0] + 1;
1029 for (j = 1; j <= s2_len; j++) {
1030 unsigned int sub = p[j - 1];
1031
1032 if (s1[i - 1] != s2[j - 1])
1033 sub++;
1034
1035 q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
1036 }
1037 r = p;
1038 p = q;
1039 q = r;
1040 }
1041
1042 i = p[s2_len];
1043 free(p);
1044 free(q);
1045 return i;
1046}
1047
1048static struct fio_option *find_child(struct fio_option *options,
1049 struct fio_option *o)
1050{
1051 struct fio_option *__o;
1052
1053 for (__o = options + 1; __o->name; __o++)
1054 if (__o->parent && !strcmp(__o->parent, o->name))
1055 return __o;
1056
1057 return NULL;
1058}
1059
1060static void __print_option(struct fio_option *o, struct fio_option *org,
1061 int level)
1062{
1063 char name[256], *p;
1064 int depth;
1065
1066 if (!o)
1067 return;
1068 if (!org)
1069 org = o;
1070
1071 p = name;
1072 depth = level;
1073 while (depth--)
1074 p += sprintf(p, "%s", " ");
1075
1076 sprintf(p, "%s", o->name);
1077
1078 log_info("%-24s: %s\n", name, o->help);
1079}
1080
1081static void print_option(struct fio_option *o)
1082{
1083 struct fio_option *parent;
1084 struct fio_option *__o;
1085 unsigned int printed;
1086 unsigned int level;
1087
1088 __print_option(o, NULL, 0);
1089 parent = o;
1090 level = 0;
1091 do {
1092 level++;
1093 printed = 0;
1094
1095 while ((__o = find_child(o, parent)) != NULL) {
1096 __print_option(__o, o, level);
1097 o = __o;
1098 printed++;
1099 }
1100
1101 parent = o;
1102 } while (printed);
1103}
1104
1105int show_cmd_help(struct fio_option *options, const char *name)
1106{
1107 struct fio_option *o, *closest;
1108 unsigned int best_dist = -1U;
1109 int found = 0;
1110 int show_all = 0;
1111
1112 if (!name || !strcmp(name, "all"))
1113 show_all = 1;
1114
1115 closest = NULL;
1116 best_dist = -1;
1117 for (o = &options[0]; o->name; o++) {
1118 int match = 0;
1119
1120 if (o->type == FIO_OPT_DEPRECATED)
1121 continue;
1122 if (!exec_profile && o->prof_name)
1123 continue;
1124 if (exec_profile && !(o->prof_name && !strcmp(exec_profile, o->prof_name)))
1125 continue;
1126
1127 if (name) {
1128 if (!strcmp(name, o->name) ||
1129 (o->alias && !strcmp(name, o->alias)))
1130 match = 1;
1131 else {
1132 unsigned int dist;
1133
1134 dist = string_distance(name, o->name);
1135 if (dist < best_dist) {
1136 best_dist = dist;
1137 closest = o;
1138 }
1139 }
1140 }
1141
1142 if (show_all || match) {
1143 found = 1;
1144 if (match)
1145 log_info("%20s: %s\n", o->name, o->help);
1146 if (show_all) {
1147 if (!o->parent)
1148 print_option(o);
1149 continue;
1150 }
1151 }
1152
1153 if (!match)
1154 continue;
1155
1156 show_option_help(o, 0);
1157 }
1158
1159 if (found)
1160 return 0;
1161
1162 log_err("No such command: %s", name);
1163
1164 /*
1165 * Only print an appropriately close option, one where the edit
1166 * distance isn't too big. Otherwise we get crazy matches.
1167 */
1168 if (closest && best_dist < 3) {
1169 log_info(" - showing closest match\n");
1170 log_info("%20s: %s\n", closest->name, closest->help);
1171 show_option_help(closest, 0);
1172 } else
1173 log_info("\n");
1174
1175 return 1;
1176}
1177
1178/*
1179 * Handle parsing of default parameters.
1180 */
1181void fill_default_options(void *data, struct fio_option *options)
1182{
1183 struct fio_option *o;
1184
1185 dprint(FD_PARSE, "filling default options\n");
1186
1187 for (o = &options[0]; o->name; o++)
1188 if (o->def)
1189 handle_option(o, o->def, data);
1190}
1191
1192void option_init(struct fio_option *o)
1193{
1194 if (o->type == FIO_OPT_DEPRECATED)
1195 return;
1196 if (o->type == FIO_OPT_BOOL) {
1197 o->minval = 0;
1198 o->maxval = 1;
1199 }
1200 if (o->type == FIO_OPT_INT) {
1201 if (!o->maxval)
1202 o->maxval = UINT_MAX;
1203 }
1204 if (o->type == FIO_OPT_FLOAT_LIST) {
1205 o->minfp = DBL_MIN;
1206 o->maxfp = DBL_MAX;
1207 }
1208 if (o->type == FIO_OPT_STR_SET && o->def && !o->no_warn_def) {
1209 log_err("Option %s: string set option with"
1210 " default will always be true\n", o->name);
1211 }
1212 if (!o->cb && !o->off1)
1213 log_err("Option %s: neither cb nor offset given\n", o->name);
1214 if (!o->category) {
1215 log_info("Option %s: no category defined. Setting to misc\n", o->name);
1216 o->category = FIO_OPT_C_GENERAL;
1217 o->group = FIO_OPT_G_INVALID;
1218 }
1219 if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE ||
1220 o->type == FIO_OPT_STR_MULTI)
1221 return;
1222 if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4))
1223 log_err("Option %s: both cb and offset given\n", o->name);
1224}
1225
1226/*
1227 * Sanitize the options structure. For now it just sets min/max for bool
1228 * values and whether both callback and offsets are given.
1229 */
1230void options_init(struct fio_option *options)
1231{
1232 struct fio_option *o;
1233
1234 dprint(FD_PARSE, "init options\n");
1235
1236 for (o = &options[0]; o->name; o++) {
1237 option_init(o);
1238 if (o->inverse)
1239 o->inv_opt = find_option(options, o->inverse);
1240 }
1241}
1242
1243void options_free(struct fio_option *options, void *data)
1244{
1245 struct fio_option *o;
1246 char **ptr;
1247
1248 dprint(FD_PARSE, "free options\n");
1249
1250 for (o = &options[0]; o->name; o++) {
1251 if (o->type != FIO_OPT_STR_STORE || !o->off1)
1252 continue;
1253
1254 ptr = td_var(data, o, o->off1);
1255 if (*ptr) {
1256 free(*ptr);
1257 *ptr = NULL;
1258 }
1259 }
1260}