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"
286 " (%d max)\n", ull, o->maxval);
289 if (o->minval && ull < o->minval) {
290 fprintf(stderr, "min value out of range: %lld"
291 " (%d min)\n", ull, o->minval);
296 ret = fn(data, &ull);
298 if (o->type == FIO_OPT_STR_VAL_INT) {
300 val_store(ilp, ull, o->off1, data);
301 if (!more && o->off2)
302 val_store(ilp, ull, o->off2, data);
305 val_store(ullp, ull, o->off1, data);
306 if (!more && o->off2)
307 val_store(ullp, ull, o->off2, data);
312 case FIO_OPT_STR_STORE: {
313 fio_opt_str_fn *fn = o->cb;
315 cp = td_var(data, o->off1);
326 case FIO_OPT_RANGE: {
330 strncpy(tmp, ptr, sizeof(tmp) - 1);
332 p1 = strchr(tmp, '-');
334 p1 = strchr(tmp, ':');
346 if (!check_range_bytes(p1, &ul1) &&
347 !check_range_bytes(p2, &ul2)) {
350 unsigned long foo = ul1;
357 val_store(ilp, ul1, o->off1, data);
358 val_store(ilp, ul2, o->off2, data);
360 if (o->off3 && o->off4) {
361 val_store(ilp, ul1, o->off3, data);
362 val_store(ilp, ul2, o->off4, data);
370 fio_opt_int_fn *fn = o->cb;
372 ret = check_int(ptr, &il);
376 if (o->maxval && il > (int) o->maxval) {
377 fprintf(stderr, "max value out of range: %d (%d max)\n",
381 if (o->minval && il < o->minval) {
382 fprintf(stderr, "min value out of range: %d (%d min)\n",
394 val_store(ilp, il, o->off1, data);
395 if (!more && o->off2)
396 val_store(ilp, il, o->off2, data);
400 case FIO_OPT_STR_SET: {
401 fio_opt_str_set_fn *fn = o->cb;
407 val_store(ilp, 1, o->off1, data);
408 if (!more && o->off2)
409 val_store(ilp, 1, o->off2, data);
414 fprintf(stderr, "Bad option type %u\n", o->type);
421 static int handle_option(struct fio_option *o, const char *ptr, void *data)
423 const char *ptr2 = NULL;
426 dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, ptr);
429 * See if we have a second set of parameters, hidden after a comma.
430 * Do this before parsing the first round, to check if we should
431 * copy set 1 options to set 2.
434 (o->type != FIO_OPT_STR_STORE) &&
435 (o->type != FIO_OPT_STR)) {
436 ptr2 = strchr(ptr, ',');
438 ptr2 = strchr(ptr, ':');
440 ptr2 = strchr(ptr, '-');
444 * Don't return early if parsing the first option fails - if
445 * we are doing multiple arguments, we can allow the first one
448 r1 = __handle_option(o, ptr, data, 1, !!ptr2);
454 r2 = __handle_option(o, ptr2, data, 0, 0);
459 int parse_cmd_option(const char *opt, const char *val,
460 struct fio_option *options, void *data)
462 struct fio_option *o;
464 o = find_option(options, opt);
466 fprintf(stderr, "Bad option %s\n", opt);
470 if (!handle_option(o, val, data))
473 fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
477 int parse_option(const char *opt, struct fio_option *options, void *data)
479 struct fio_option *o;
485 pre = strchr(tmp, '=');
491 o = find_option(options, pre);
493 o = find_option(options, tmp);
498 fprintf(stderr, "Bad option %s\n", tmp);
503 if (!handle_option(o, post, data)) {
508 fprintf(stderr, "fio: failed parsing %s\n", opt);
514 * Option match, levenshtein distance. Handy for not quite remembering what
515 * the option name is.
517 static int string_distance(const char *s1, const char *s2)
519 unsigned int s1_len = strlen(s1);
520 unsigned int s2_len = strlen(s2);
521 unsigned int *p, *q, *r;
524 p = malloc(sizeof(unsigned int) * (s2_len + 1));
525 q = malloc(sizeof(unsigned int) * (s2_len + 1));
528 for (i = 1; i <= s2_len; i++)
531 for (i = 1; i <= s1_len; i++) {
533 for (j = 1; j <= s2_len; j++) {
534 unsigned int sub = p[j - 1];
536 if (s1[i - 1] != s2[j - 1])
539 q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
552 static void show_option_help(struct fio_option *o)
554 const char *typehelp[] = {
556 "string with possible k/m/g postfix (opt=4k)",
557 "string with range and postfix (opt=1k-4k)",
558 "string with time postfix (opt=10s)",
560 "string with dual range (opt=1k-4k,4k-8k)",
561 "integer value (opt=100)",
562 "boolean value (opt=1)",
567 printf("%20s: %s\n", "alias", o->alias);
569 printf("%20s: %s\n", "type", typehelp[o->type]);
570 printf("%20s: %s\n", "default", o->def ? o->def : "no default");
571 show_option_range(o);
572 show_option_values(o);
575 static struct fio_option *find_child(struct fio_option *options,
576 struct fio_option *o)
578 struct fio_option *__o;
580 for (__o = options + 1; __o->name; __o++)
581 if (__o->parent && !strcmp(__o->parent, o->name))
587 static void __print_option(struct fio_option *o, struct fio_option *org,
601 p += sprintf(p, "%s", " ");
603 sprintf(p, "%s", o->name);
605 printf("%-24s: %s\n", name, o->help);
608 static void print_option(struct fio_option *o)
610 struct fio_option *parent;
611 struct fio_option *__o;
612 unsigned int printed;
615 __print_option(o, NULL, 0);
622 while ((__o = find_child(o, parent)) != NULL) {
623 __print_option(__o, o, level);
632 int show_cmd_help(struct fio_option *options, const char *name)
634 struct fio_option *o, *closest;
635 unsigned int best_dist;
639 if (!name || !strcmp(name, "all"))
644 for (o = &options[0]; o->name; o++) {
648 if (!strcmp(name, o->name) ||
649 (o->alias && !strcmp(name, o->alias)))
654 dist = string_distance(name, o->name);
655 if (dist < best_dist) {
662 if (show_all || match) {
665 printf("%24s: %s\n", o->name, o->help);
682 printf("No such command: %s", name);
684 printf(" - showing closest match\n");
685 printf("%20s: %s\n", closest->name, closest->help);
686 show_option_help(closest);
694 * Handle parsing of default parameters.
696 void fill_default_options(void *data, struct fio_option *options)
698 struct fio_option *o;
700 dprint(FD_PARSE, "filling default options\n");
702 for (o = &options[0]; o->name; o++)
704 handle_option(o, o->def, data);
708 * Sanitize the options structure. For now it just sets min/max for bool
709 * values and whether both callback and offsets are given.
711 void options_init(struct fio_option *options)
713 struct fio_option *o;
715 dprint(FD_PARSE, "init options\n");
717 for (o = &options[0]; o->name; o++) {
718 if (o->type == FIO_OPT_BOOL) {
722 if (o->type == FIO_OPT_STR_SET && o->def) {
723 fprintf(stderr, "Option %s: string set option with"
724 " default will always be true\n",
727 if (!o->cb && !o->off1) {
728 fprintf(stderr, "Option %s: neither cb nor offset"
729 " given\n", o->name);
731 if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE)
733 if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4)) {
734 fprintf(stderr, "Option %s: both cb and offset given\n",