[fio.git] / parse.c

/*
 * This file contains the ini and command liner parser main.
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <limits.h>

#include "parse.h"

static unsigned long get_mult_time(char c)
{
	switch (c) {
		case 'm':
		case 'M':
			return 60;
		case 'h':
		case 'H':
			return 60 * 60;
		case 'd':
		case 'D':
			return 24 * 60 * 60;
		default:
			return 1;
	}
}

static unsigned long get_mult_bytes(char c)
{
	switch (c) {
		case 'k':
		case 'K':
			return 1024;
		case 'm':
		case 'M':
			return 1024 * 1024;
		case 'g':
		case 'G':
			return 1024 * 1024 * 1024;
		default:
			return 1;
	}
}

/*
 * convert string into decimal value, noting any size suffix
 */
static int str_to_decimal(const char *str, long long *val, int kilo)
{
	int len;

	len = strlen(str);
	if (!len)
		return 1;

	*val = strtol(str, NULL, 10);
	if (*val == LONG_MAX && errno == ERANGE)
		return 1;

	if (kilo)
		*val *= get_mult_bytes(str[len - 1]);
	else
		*val *= get_mult_time(str[len - 1]);

	return 0;
}

static int check_str_bytes(const char *p, long long *val)
{
	return str_to_decimal(p, val, 1);
}

static int check_str_time(const char *p, long long *val)
{
	return str_to_decimal(p, val, 0);
}

void strip_blank_front(char **p)
{
	char *s = *p;

	while (isspace(*s))
		s++;
}

void strip_blank_end(char *p)
{
	char *s = p + strlen(p) - 1;

	while (isspace(*s) || iscntrl(*s))
		s--;

	*(s + 1) = '\0';
}

static int check_range_bytes(const char *str, long *val)
{
	char suffix;

	if (!strlen(str))
		return 1;

	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
		*val *= get_mult_bytes(suffix);
		return 0;
	}

	if (sscanf(str, "%lu", val) == 1)
		return 0;

	return 1;
}

static int check_int(const char *p, int *val)
{
	if (!strlen(p))
		return 1;
	if (sscanf(p, "%u", val) == 1)
		return 0;

	return 1;
}

static struct fio_option *find_option(struct fio_option *options,
				      const char *opt)
{
	struct fio_option *o = &options[0];

	while (o->name) {
		if (!strcmp(o->name, opt))
			return o;
		else if (o->alias && !strcmp(o->alias, opt))
			return o;

		o++;
	}

	return NULL;
}

#define val_store(ptr, val, off, data)			\
	do {						\
		ptr = td_var((data), (off));		\
		*ptr = (val);				\
	} while (0)

static int __handle_option(struct fio_option *o, const char *ptr, void *data,
			   int first, int more)
{
	int il, *ilp;
	long long ull, *ullp;
	long ul1, ul2;
	char **cp;
	int ret = 0, is_time = 0;

	if (!ptr && o->type != FIO_OPT_STR_SET) {
		fprintf(stderr, "Option %s requires an argument\n", o->name);
		return 1;
	}

	switch (o->type) {
	case FIO_OPT_STR: {
		fio_opt_str_fn *fn = o->cb;

		ret = fn(data, ptr);
		break;
	}
	case FIO_OPT_STR_VAL_TIME:
		is_time = 1;
	case FIO_OPT_STR_VAL:
	case FIO_OPT_STR_VAL_INT: {
		fio_opt_str_val_fn *fn = o->cb;

		if (is_time)
			ret = check_str_time(ptr, &ull);
		else
			ret = check_str_bytes(ptr, &ull);

		if (ret)
			break;

		if (o->maxval && ull > o->maxval) {
			fprintf(stderr, "max value out of range: %lld (%d max)\n", ull, o->maxval);
			return 1;
		}
		if (o->minval && ull < o->minval) {
			fprintf(stderr, "min value out of range: %lld (%d min)\n", ull, o->minval);
			return 1;
		}

		if (fn)
			ret = fn(data, &ull);
		else {
			if (o->type == FIO_OPT_STR_VAL_INT) {
				if (first)
					val_store(ilp, ull, o->off1, data);
				if (!more && o->off2)
					val_store(ilp, ull, o->off2, data);
			} else {
				if (first)
					val_store(ullp, ull, o->off1, data);
				if (!more && o->off2)
					val_store(ullp, ull, o->off2, data);
			}
		}
		break;
	}
	case FIO_OPT_STR_STORE:
		cp = td_var(data, o->off1);
		*cp = strdup(ptr);
		break;
	case FIO_OPT_RANGE: {
		char tmp[128];
		char *p1, *p2;

		strncpy(tmp, ptr, sizeof(tmp) - 1);

		p1 = strchr(tmp, '-');
		if (!p1) {
			ret = 1;
			break;
		}

		p2 = p1 + 1;
		*p1 = '\0';
		p1 = tmp;

		ret = 1;
		if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
			ret = 0;
			if (ul1 > ul2) {
				unsigned long foo = ul1;

				ul1 = ul2;
				ul2 = foo;
			}

			if (first) {
				val_store(ilp, ul1, o->off1, data);
				val_store(ilp, ul2, o->off2, data);
			}
			if (!more && o->off3 && o->off4) {
				val_store(ilp, ul1, o->off3, data);
				val_store(ilp, ul2, o->off4, data);
			}
		}

		break;
	}
	case FIO_OPT_INT:
	case FIO_OPT_BOOL: {
		fio_opt_int_fn *fn = o->cb;

		ret = check_int(ptr, &il);
		if (ret)
			break;

		if (o->maxval && il > (int) o->maxval) {
			fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval);
			return 1;
		}
		if (o->minval && il < o->minval) {
			fprintf(stderr, "min value out of range: %d (%d min)\n", il, o->minval);
			return 1;
		}

		if (o->neg)
			il = !il;

		if (fn)
			ret = fn(data, &il);
		else {
			if (first)
				val_store(ilp, il, o->off1, data);
			if (!more && o->off2)
				val_store(ilp, il, o->off2, data);
		}
		break;
	}
	case FIO_OPT_STR_SET: {
		fio_opt_str_set_fn *fn = o->cb;

		if (fn)
			ret = fn(data);
		else {
			if (first)
				val_store(ilp, 1, o->off1, data);
			if (!more && o->off2)
				val_store(ilp, 1, o->off2, data);
		}
		break;
	}
	default:
		fprintf(stderr, "Bad option type %u\n", o->type);
		ret = 1;
	}

	return ret;
}

static int handle_option(struct fio_option *o, const char *ptr, void *data)
{
	const char *ptr2 = NULL;
	int r1, r2;

	/*
	 * See if we have a second set of parameters, hidden after a comma.
	 * Do this before parsing the first round, to check if we should
	 * copy set 1 options to set 2.
	 */
	if (ptr)
		ptr2 = strchr(ptr, ',');

	/*
	 * Don't return early if parsing the first option fails - if
	 * we are doing multiple arguments, we can allow the first one
	 * being empty.
	 */
	r1 = __handle_option(o, ptr, data, 1, !!ptr2);

	if (!ptr2)
		return r1;

	ptr2++;
	r2 = __handle_option(o, ptr2, data, 0, 0);

	return r1 && r2;
}

int parse_cmd_option(const char *opt, const char *val,
		     struct fio_option *options, void *data)
{
	struct fio_option *o;

	o = find_option(options, opt);
	if (!o) {
		fprintf(stderr, "Bad option %s\n", opt);
		return 1;
	}

	if (!handle_option(o, val, data))
		return 0;

	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	return 1;
}

int parse_option(const char *opt, struct fio_option *options, void *data)
{
	struct fio_option *o;
	char *pre, *post;
	char tmp[64];

	strncpy(tmp, opt, sizeof(tmp) - 1);

	pre = strchr(tmp, '=');
	if (pre) {
		post = pre;
		*pre = '\0';
		pre = tmp;
		post++;
		o = find_option(options, pre);
	} else {
		o = find_option(options, tmp);
		post = NULL;
	}

	if (!o) {
		fprintf(stderr, "Bad option %s\n", tmp);
		return 1;
	}

	if (!handle_option(o, post, data))
		return 0;

	fprintf(stderr, "fio: failed parsing %s\n", opt);
	return 1;
}

static void show_option_range(struct fio_option *o)
{
	if (!o->minval && !o->maxval)
		return;

	printf("%16s: min=%d, max=%d\n", "range", o->minval, o->maxval);
}

static void show_option_values(struct fio_option *o)
{
	const char *msg;
	int i = 0;

	if (!o->posval)
		return;

	do {
		msg = o->posval[i];
		if (!msg)
			break;

		if (!i)
			printf("%16s: ", "valid values");

		printf("%s,", msg);
		i++;
	} while (1);

	if (i)
		printf("\n");
}

int show_cmd_help(struct fio_option *options, const char *name)
{
	int show_all = !strcmp(name, "all");
	struct fio_option *o = &options[0];
	const char *typehelp[] = {
		"string (opt=bla)",
		"string with possible k/m/g postfix (opt=4k)",
		"string with range and postfix (opt=1k-4k)",
		"string with time postfix (opt=10s)",
		"string (opt=bla)",
		"string with dual range (opt=1k-4k,4k-8k)",
		"integer value (opt=100)",
		"boolean value (opt=1)",
		"no argument (opt)",
	};
	int found = 0;

	while (o->name) {
		int match = !strcmp(name, o->name);

		if (show_all || match) {
			found = 1;
			printf("%16s: %s\n", o->name, o->help);
			if (match) {
				printf("%16s: %s\n", "type", typehelp[o->type]);
				printf("%16s: %s\n", "default", o->def ? o->def : "no default");
				show_option_range(o);
				show_option_values(o);
			}
		}

		o++;
	}

	if (found)
		return 0;

	printf("No such command: %s\n", name);
	return 1;
}

/*
 * Handle parsing of default parameters.
 */
void fill_default_options(void *data, struct fio_option *options)
{
	struct fio_option *o = &options[0];

	while (o->name) {
		if (o->def)
			handle_option(o, o->def, data);
		o++;
	}
}

/*
 * Sanitize the options structure. For now it just sets min/max for bool
 * values.
 */
void options_init(struct fio_option *options)
{
	struct fio_option *o = &options[0];

	while (o->name) {
		if (o->type == FIO_OPT_BOOL) {
			o->minval = 0;
			o->maxval = 1;
		}
		o++;
	}
}
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;
cb2c86fd JA	54
cb2c86fd	55	len = strlen(str);
f90eff5a JA	56	if (!len)
f90eff5a JA	57	return 1;
cb2c86fd	58
cda866ca JA	59	*val = strtol(str, NULL, 10);
cda866ca JA	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))
787f7e95 JA	120	return 1;
e1f36503 JA	121	if (sscanf(p, "%u", val) == 1)
e1f36503 JA	122	return 0;
cb2c86fd	123
e1f36503 JA	124	return 1;
e1f36503 JA	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))
e1f36503 JA	134	return o;
03b74b3e JA	135	else if (o->alias && !strcmp(o->alias, opt))
03b74b3e JA	136	return o;
cb2c86fd	137
33963c6c JA	138	o++;
33963c6c JA	139	}
cb2c86fd	140
e1f36503	141	return NULL;
cb2c86fd JA	142	}
cb2c86fd JA	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:
75e6f36f JA	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)
17abbe89 JA	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)
17abbe89 JA	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;
e1f36503 JA	218
0bbab0e7	219	strncpy(tmp, ptr, sizeof(tmp) - 1);
b765a372 JA	220
b765a372 JA	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);
17abbe89 JA	247	val_store(ilp, ul2, o->off4, data);
e1f36503	248	}
17abbe89 JA	249	}
17abbe89 JA	250
e1f36503 JA	251	break;
e1f36503 JA	252	}
13335ddb JA	253	case FIO_OPT_INT:
13335ddb JA	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	269
76a43db4 JA	270	if (o->neg)
	271	il = !il;
	272
e1f36503 JA	273	if (fn)
	274	ret = fn(data, &il);
	275	else {
17abbe89 JA	276	if (first)
17abbe89 JA	277	val_store(ilp, il, o->off1, data);
787f7e95	278	if (!more && o->off2)
17abbe89	279	val_store(ilp, il, o->off2, data);
e1f36503 JA	280	}
	281	break;
	282	}
	283	case FIO_OPT_STR_SET: {
	284	fio_opt_str_set_fn *fn = o->cb;
	285
	286	if (fn)
	287	ret = fn(data);
	288	else {
17abbe89 JA	289	if (first)
17abbe89 JA	290	val_store(ilp, 1, o->off1, data);
787f7e95	291	if (!more && o->off2)
17abbe89	292	val_store(ilp, 1, o->off2, data);
e1f36503 JA	293	}
	294	break;
	295	}
	296	default:
1e97cce9	297	fprintf(stderr, "Bad option type %u\n", o->type);
e1f36503 JA	298	ret = 1;
e1f36503 JA	299	}
cb2c86fd	300
e1f36503	301	return ret;
cb2c86fd JA	302	}
cb2c86fd JA	303
f90eff5a JA	304	static int handle_option(struct fio_option o, const char ptr, void *data)
f90eff5a JA	305	{
92b586f8	306	const char *ptr2 = NULL;
787f7e95	307	int r1, r2;
f90eff5a JA	308
f90eff5a JA	309	/*
787f7e95 JA	310	* See if we have a second set of parameters, hidden after a comma.
	311	* Do this before parsing the first round, to check if we should
	312	* copy set 1 options to set 2.
f90eff5a	313	*/
92b586f8 JA	314	if (ptr)
92b586f8 JA	315	ptr2 = strchr(ptr, ',');
787f7e95 JA	316
	317	/*
	318	* Don't return early if parsing the first option fails - if
	319	* we are doing multiple arguments, we can allow the first one
	320	* being empty.
	321	*/
	322	r1 = __handle_option(o, ptr, data, 1, !!ptr2);
	323
f90eff5a	324	if (!ptr2)
787f7e95	325	return r1;
f90eff5a JA	326
f90eff5a JA	327	ptr2++;
787f7e95 JA	328	r2 = __handle_option(o, ptr2, data, 0, 0);
	329
	330	return r1 && r2;
f90eff5a JA	331	}
f90eff5a JA	332
b4692828 JA	333	int parse_cmd_option(const char opt, const char val,
	334	struct fio_option options, void data)
	335	{
	336	struct fio_option *o;
	337
	338	o = find_option(options, opt);
	339	if (!o) {
	340	fprintf(stderr, "Bad option %s\n", opt);
	341	return 1;
	342	}
	343
b1508cf9 JA	344	if (!handle_option(o, val, data))
	345	return 0;
	346
	347	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	348	return 1;
b4692828 JA	349	}
b4692828 JA	350
e1f36503	351	int parse_option(const char opt, struct fio_option options, void *data)
cb2c86fd	352	{
b4692828	353	struct fio_option *o;
e1f36503 JA	354	char pre, post;
	355	char tmp[64];
	356
0bbab0e7	357	strncpy(tmp, opt, sizeof(tmp) - 1);
e1f36503 JA	358
	359	pre = strchr(tmp, '=');
	360	if (pre) {
	361	post = pre;
	362	*pre = '\0';
	363	pre = tmp;
	364	post++;
	365	o = find_option(options, pre);
	366	} else {
	367	o = find_option(options, tmp);
	368	post = NULL;
	369	}
cb2c86fd	370
e1f36503 JA	371	if (!o) {
	372	fprintf(stderr, "Bad option %s\n", tmp);
	373	return 1;
	374	}
	375
b1508cf9 JA	376	if (!handle_option(o, post, data))
	377	return 0;
	378
	379	fprintf(stderr, "fio: failed parsing %s\n", opt);
	380	return 1;
e1f36503	381	}
fd28ca49	382
15f7918f JA	383	static void show_option_range(struct fio_option *o)
	384	{
	385	if (!o->minval && !o->maxval)
	386	return;
	387
	388	printf("%16s: min=%d, max=%d\n", "range", o->minval, o->maxval);
	389	}
	390
	391	static void show_option_values(struct fio_option *o)
	392	{
	393	const char *msg;
	394	int i = 0;
	395
	396	if (!o->posval)
	397	return;
	398
	399	do {
	400	msg = o->posval[i];
	401	if (!msg)
	402	break;
	403
	404	if (!i)
	405	printf("%16s: ", "valid values");
	406
	407	printf("%s,", msg);
	408	i++;
	409	} while (1);
	410
	411	if (i)
	412	printf("\n");
	413	}
	414
fd28ca49 JA	415	int show_cmd_help(struct fio_option options, const char name)
	416	{
	417	int show_all = !strcmp(name, "all");
	418	struct fio_option *o = &options[0];
	419	const char *typehelp[] = {
	420	"string (opt=bla)",
	421	"string with possible k/m/g postfix (opt=4k)",
	422	"string with range and postfix (opt=1k-4k)",
	423	"string with time postfix (opt=10s)",
	424	"string (opt=bla)",
	425	"string with dual range (opt=1k-4k,4k-8k)",
	426	"integer value (opt=100)",
13335ddb	427	"boolean value (opt=1)",
fd28ca49 JA	428	"no argument (opt)",
fd28ca49 JA	429	};
29fc6afe	430	int found = 0;
fd28ca49 JA	431
	432	while (o->name) {
	433	int match = !strcmp(name, o->name);
	434
	435	if (show_all \|\| match) {
29fc6afe	436	found = 1;
facba0e5	437	printf("%16s: %s\n", o->name, o->help);
ee738499	438	if (match) {
facba0e5 JA	439	printf("%16s: %s\n", "type", typehelp[o->type]);
facba0e5 JA	440	printf("%16s: %s\n", "default", o->def ? o->def : "no default");
15f7918f JA	441	show_option_range(o);
15f7918f JA	442	show_option_values(o);
ee738499	443	}
fd28ca49 JA	444	}
	445
	446	o++;
	447	}
	448
29fc6afe JA	449	if (found)
29fc6afe JA	450	return 0;
fd28ca49	451
29fc6afe JA	452	printf("No such command: %s\n", name);
29fc6afe JA	453	return 1;
fd28ca49	454	}
ee738499	455
13335ddb JA	456	/*
	457	* Handle parsing of default parameters.
	458	*/
ee738499 JA	459	void fill_default_options(void data, struct fio_option options)
	460	{
	461	struct fio_option *o = &options[0];
	462
	463	while (o->name) {
	464	if (o->def)
	465	handle_option(o, o->def, data);
	466	o++;
	467	}
	468	}
13335ddb JA	469
	470	/*
	471	* Sanitize the options structure. For now it just sets min/max for bool
	472	* values.
	473	*/
	474	void options_init(struct fio_option *options)
	475	{
	476	struct fio_option *o = &options[0];
	477
	478	while (o->name) {
	479	if (o->type == FIO_OPT_BOOL) {
	480	o->minval = 0;
	481	o->maxval = 1;
	482	}
	483	o++;
	484	}
	485	}