2 * This file contains the ini and command liner parser main.
15 static int vp_cmp(const void *p1, const void *p2)
17 const struct value_pair *vp1 = p1;
18 const struct value_pair *vp2 = p2;
20 return strlen(vp2->ival) - strlen(vp1->ival);
23 static void posval_sort(struct fio_option *o, struct value_pair *vpmap)
25 const struct value_pair *vp;
28 memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair));
30 for (entries = 0; entries < PARSE_MAX_VP; entries++) {
31 vp = &o->posval[entries];
32 if (!vp->ival || vp->ival[0] == '\0')
35 memcpy(&vpmap[entries], vp, sizeof(*vp));
38 qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
41 static void show_option_range(struct fio_option *o)
43 if (!o->minval && !o->maxval)
46 printf("%20s: min=%d, max=%d\n", "range", o->minval, o->maxval);
49 static void show_option_values(struct fio_option *o)
54 const struct value_pair *vp = &o->posval[i];
59 printf("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
61 printf(" %s", vp->help);
64 } while (i < PARSE_MAX_VP);
70 static unsigned long get_mult_time(char c)
87 static unsigned long get_mult_bytes(char c)
98 return 1024 * 1024 * 1024;
101 return 1024 * 1024 * 1024 * 1024UL;
108 * convert string into decimal value, noting any size suffix
110 int str_to_decimal(const char *str, long long *val, int kilo)
118 *val = strtoll(str, NULL, 10);
119 if (*val == LONG_MAX && errno == ERANGE)
123 *val *= get_mult_bytes(str[len - 1]);
125 *val *= get_mult_time(str[len - 1]);
130 static int check_str_bytes(const char *p, long long *val)
132 return str_to_decimal(p, val, 1);
135 static int check_str_time(const char *p, long long *val)
137 return str_to_decimal(p, val, 0);
140 void strip_blank_front(char **p)
150 void strip_blank_end(char *p)
164 while ((isspace(*s) || iscntrl(*s)) && (s > p))
170 static int check_range_bytes(const char *str, long *val)
177 if (sscanf(str, "%lu%c", val, &suffix) == 2) {
178 *val *= get_mult_bytes(suffix);
182 if (sscanf(str, "%lu", val) == 1)
188 static int check_int(const char *p, int *val)
192 if (strstr(p, "0x") || strstr(p, "0X")) {
193 if (sscanf(p, "%x", val) == 1)
196 if (sscanf(p, "%u", val) == 1)
203 static struct fio_option *find_option(struct fio_option *options,
206 struct fio_option *o;
208 for (o = &options[0]; o->name; o++) {
209 if (!strcmp(o->name, opt))
211 else if (o->alias && !strcmp(o->alias, opt))
218 #define val_store(ptr, val, off, data) \
220 ptr = td_var((data), (off)); \
224 static int __handle_option(struct fio_option *o, const char *ptr, void *data,
228 long long ull, *ullp;
231 int ret = 0, is_time = 0;
233 dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
236 if (!ptr && o->type != FIO_OPT_STR_SET) {
237 fprintf(stderr, "Option %s requires an argument\n", o->name);
243 fio_opt_str_fn *fn = o->cb;
244 const struct value_pair *vp;
245 struct value_pair posval[PARSE_MAX_VP];
248 posval_sort(o, posval);
250 for (i = 0; i < PARSE_MAX_VP; i++) {
252 if (!vp->ival || vp->ival[0] == '\0')
255 if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
259 val_store(ilp, vp->oval, o->off1, data);
265 show_option_values(o);
270 case FIO_OPT_STR_VAL_TIME:
272 case FIO_OPT_STR_VAL:
273 case FIO_OPT_STR_VAL_INT: {
274 fio_opt_str_val_fn *fn = o->cb;
277 ret = check_str_time(ptr, &ull);
279 ret = check_str_bytes(ptr, &ull);
284 if (o->maxval && ull > o->maxval) {
285 fprintf(stderr, "max value out of range: %lld (%d max)\n", ull, o->maxval);
288 if (o->minval && ull < o->minval) {
289 fprintf(stderr, "min value out of range: %lld (%d min)\n", ull, o->minval);
294 ret = fn(data, &ull);
296 if (o->type == FIO_OPT_STR_VAL_INT) {
298 val_store(ilp, ull, o->off1, data);
299 if (!more && o->off2)
300 val_store(ilp, ull, o->off2, data);
303 val_store(ullp, ull, o->off1, data);
304 if (!more && o->off2)
305 val_store(ullp, ull, o->off2, data);
310 case FIO_OPT_STR_STORE: {
311 fio_opt_str_fn *fn = o->cb;
313 cp = td_var(data, o->off1);
324 case FIO_OPT_RANGE: {
328 strncpy(tmp, ptr, sizeof(tmp) - 1);
330 p1 = strchr(tmp, '-');
332 p1 = strchr(tmp, ':');
344 if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
347 unsigned long foo = ul1;
354 val_store(ilp, ul1, o->off1, data);
355 val_store(ilp, ul2, o->off2, data);
357 if (o->off3 && o->off4) {
358 val_store(ilp, ul1, o->off3, data);
359 val_store(ilp, ul2, o->off4, data);
367 fio_opt_int_fn *fn = o->cb;
369 ret = check_int(ptr, &il);
373 if (o->maxval && il > (int) o->maxval) {
374 fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval);
377 if (o->minval && il < o->minval) {
378 fprintf(stderr, "min value out of range: %d (%d min)\n", il, o->minval);
389 val_store(ilp, il, o->off1, data);
390 if (!more && o->off2)
391 val_store(ilp, il, o->off2, data);
395 case FIO_OPT_STR_SET: {
396 fio_opt_str_set_fn *fn = o->cb;
402 val_store(ilp, 1, o->off1, data);
403 if (!more && o->off2)
404 val_store(ilp, 1, o->off2, data);
409 fprintf(stderr, "Bad option type %u\n", o->type);
416 static int handle_option(struct fio_option *o, const char *ptr, void *data)
418 const char *ptr2 = NULL;
421 dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, ptr);
424 * See if we have a second set of parameters, hidden after a comma.
425 * Do this before parsing the first round, to check if we should
426 * copy set 1 options to set 2.
429 (o->type != FIO_OPT_STR_STORE) &&
430 (o->type != FIO_OPT_STR)) {
431 ptr2 = strchr(ptr, ',');
433 ptr2 = strchr(ptr, ':');
435 ptr2 = strchr(ptr, '-');
439 * Don't return early if parsing the first option fails - if
440 * we are doing multiple arguments, we can allow the first one
443 r1 = __handle_option(o, ptr, data, 1, !!ptr2);
449 r2 = __handle_option(o, ptr2, data, 0, 0);
454 int parse_cmd_option(const char *opt, const char *val,
455 struct fio_option *options, void *data)
457 struct fio_option *o;
459 o = find_option(options, opt);
461 fprintf(stderr, "Bad option %s\n", opt);
465 if (!handle_option(o, val, data))
468 fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
472 int parse_option(const char *opt, struct fio_option *options, void *data)
474 struct fio_option *o;
480 pre = strchr(tmp, '=');
486 o = find_option(options, pre);
488 o = find_option(options, tmp);
493 fprintf(stderr, "Bad option %s\n", tmp);
498 if (!handle_option(o, post, data)) {
503 fprintf(stderr, "fio: failed parsing %s\n", opt);
509 * Option match, levenshtein distance. Handy for not quite remembering what
510 * the option name is.
512 static int string_distance(const char *s1, const char *s2)
514 unsigned int s1_len = strlen(s1);
515 unsigned int s2_len = strlen(s2);
516 unsigned int *p, *q, *r;
519 p = malloc(sizeof(unsigned int) * (s2_len + 1));
520 q = malloc(sizeof(unsigned int) * (s2_len + 1));
523 for (i = 1; i <= s2_len; i++)
526 for (i = 1; i <= s1_len; i++) {
528 for (j = 1; j <= s2_len; j++) {
529 unsigned int sub = p[j - 1];
531 if (s1[i - 1] != s2[j - 1])
534 q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
547 static void show_option_help(struct fio_option *o)
549 const char *typehelp[] = {
551 "string with possible k/m/g postfix (opt=4k)",
552 "string with range and postfix (opt=1k-4k)",
553 "string with time postfix (opt=10s)",
555 "string with dual range (opt=1k-4k,4k-8k)",
556 "integer value (opt=100)",
557 "boolean value (opt=1)",
562 printf("%20s: %s\n", "alias", o->alias);
564 printf("%20s: %s\n", "type", typehelp[o->type]);
565 printf("%20s: %s\n", "default", o->def ? o->def : "no default");
566 show_option_range(o);
567 show_option_values(o);
570 static struct fio_option *find_child(struct fio_option *options,
571 struct fio_option *o)
573 struct fio_option *__o;
575 for (__o = options + 1; __o->name; __o++)
576 if (__o->parent && !strcmp(__o->parent, o->name))
582 static void print_option(struct fio_option *o, struct fio_option *org,
594 p += sprintf(p, "%s", " ");
596 sprintf(p, "%s", o->name);
598 printf("%-24s: %s\n", name, o->help);
599 print_option(find_child(o, org), org, level + 1);
602 int show_cmd_help(struct fio_option *options, const char *name)
604 struct fio_option *o, *closest;
605 unsigned int best_dist;
609 if (!name || !strcmp(name, "all"))
614 for (o = &options[0]; o->name; o++) {
618 if (!strcmp(name, o->name) ||
619 (o->alias && !strcmp(name, o->alias)))
624 dist = string_distance(name, o->name);
625 if (dist < best_dist) {
632 if (show_all || match) {
635 printf("%24s: %s\n", o->name, o->help);
638 print_option(o, NULL, 0);
652 printf("No such command: %s", name);
654 printf(" - showing closest match\n");
655 printf("%20s: %s\n", closest->name, closest->help);
656 show_option_help(closest);
664 * Handle parsing of default parameters.
666 void fill_default_options(void *data, struct fio_option *options)
668 struct fio_option *o;
670 dprint(FD_PARSE, "filling default options\n");
672 for (o = &options[0]; o->name; o++)
674 handle_option(o, o->def, data);
678 * Sanitize the options structure. For now it just sets min/max for bool
679 * values and whether both callback and offsets are given.
681 void options_init(struct fio_option *options)
683 struct fio_option *o;
685 dprint(FD_PARSE, "init options\n");
687 for (o = &options[0]; o->name; o++) {
688 if (o->type == FIO_OPT_BOOL) {
692 if (o->type == FIO_OPT_STR_SET && o->def)
693 fprintf(stderr, "Option %s: string set option with default will always be true\n", o->name);
694 if (!o->cb && !o->off1)
695 fprintf(stderr, "Option %s: neither cb nor offset given\n", o->name);
696 if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE)
698 if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4))
699 fprintf(stderr, "Option %s: both cb and offset given\n", o->name);