[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;

	for (o = &options[0]; o->name; o++) {
		if (!strcmp(o->name, opt))
			return o;
		else if (o->alias && !strcmp(o->alias, opt))
			return 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) {
			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, ',');
		if (!ptr2)
			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");
	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)",
	};
	struct fio_option *o;
	int found = 0;

	for (o = &options[0]; o->name; o++) {
		int match = !strcmp(name, o->name);

		if (show_all || match) {
			found = 1;
			printf("%16s: %s\n", o->name, o->help);
			if (show_all)
				continue;
		}

		if (!match)
			continue;

		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);
	}

	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;

	for (o = &options[0]; o->name; o++)
		if (o->def)
			handle_option(o, o->def, data);
}

/*
 * Sanitize the options structure. For now it just sets min/max for bool
 * values and whether both callback and offsets are given.
 */
void options_init(struct fio_option *options)
{
	struct fio_option *o;

	for (o = &options[0]; o->name; o++) {
		if (o->type == FIO_OPT_BOOL) {
			o->minval = 0;
			o->maxval = 1;
		}
		if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4))
			fprintf(stderr, "Option %s: both cb and offset given\n", o->name);
	}
}
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	{
4945ba12	130	struct fio_option *o;
cb2c86fd	131
4945ba12	132	for (o = &options[0]; o->name; o++) {
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;
33963c6c	137	}
cb2c86fd	138
e1f36503	139	return NULL;
cb2c86fd JA	140	}
cb2c86fd JA	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:
75e6f36f JA	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
db8e0165 JA	183	if (o->maxval && ull > o->maxval) {
	184	fprintf(stderr, "max value out of range: %lld (%d max)\n", ull, o->maxval);
	185	return 1;
	186	}
	187	if (o->minval && ull < o->minval) {
	188	fprintf(stderr, "min value out of range: %lld (%d min)\n", ull, o->minval);
	189	return 1;
	190	}
e1f36503 JA	191
	192	if (fn)
	193	ret = fn(data, &ull);
	194	else {
75e6f36f	195	if (o->type == FIO_OPT_STR_VAL_INT) {
17abbe89 JA	196	if (first)
17abbe89 JA	197	val_store(ilp, ull, o->off1, data);
787f7e95	198	if (!more && o->off2)
17abbe89	199	val_store(ilp, ull, o->off2, data);
75e6f36f	200	} else {
17abbe89 JA	201	if (first)
17abbe89 JA	202	val_store(ullp, ull, o->off1, data);
787f7e95	203	if (!more && o->off2)
17abbe89	204	val_store(ullp, ull, o->off2, data);
75e6f36f	205	}
e1f36503 JA	206	}
	207	break;
	208	}
	209	case FIO_OPT_STR_STORE:
	210	cp = td_var(data, o->off1);
	211	*cp = strdup(ptr);
	212	break;
	213	case FIO_OPT_RANGE: {
b765a372	214	char tmp[128];
e1f36503 JA	215	char p1, p2;
e1f36503 JA	216
0bbab0e7	217	strncpy(tmp, ptr, sizeof(tmp) - 1);
b765a372 JA	218
b765a372 JA	219	p1 = strchr(tmp, '-');
e1f36503	220	if (!p1) {
0c9baf91 JA	221	p1 = strchr(tmp, ':');
	222	if (!p1) {
	223	ret = 1;
	224	break;
	225	}
e1f36503 JA	226	}
	227
	228	p2 = p1 + 1;
	229	*p1 = '\0';
b765a372	230	p1 = tmp;
e1f36503 JA	231
	232	ret = 1;
	233	if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
	234	ret = 0;
e1f36503	235	if (ul1 > ul2) {
f90eff5a JA	236	unsigned long foo = ul1;
	237
	238	ul1 = ul2;
	239	ul2 = foo;
	240	}
	241
	242	if (first) {
17abbe89 JA	243	val_store(ilp, ul1, o->off1, data);
	244	val_store(ilp, ul2, o->off2, data);
	245	}
787f7e95	246	if (!more && o->off3 && o->off4) {
17abbe89 JA	247	val_store(ilp, ul1, o->off3, data);
17abbe89 JA	248	val_store(ilp, ul2, o->off4, data);
e1f36503	249	}
17abbe89 JA	250	}
17abbe89 JA	251
e1f36503 JA	252	break;
e1f36503 JA	253	}
13335ddb JA	254	case FIO_OPT_INT:
13335ddb JA	255	case FIO_OPT_BOOL: {
e1f36503 JA	256	fio_opt_int_fn *fn = o->cb;
	257
	258	ret = check_int(ptr, &il);
	259	if (ret)
	260	break;
	261
db8e0165 JA	262	if (o->maxval && il > (int) o->maxval) {
	263	fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval);
	264	return 1;
	265	}
	266	if (o->minval && il < o->minval) {
	267	fprintf(stderr, "min value out of range: %d (%d min)\n", il, o->minval);
	268	return 1;
	269	}
e1f36503	270
76a43db4 JA	271	if (o->neg)
	272	il = !il;
	273
e1f36503 JA	274	if (fn)
	275	ret = fn(data, &il);
	276	else {
17abbe89 JA	277	if (first)
17abbe89 JA	278	val_store(ilp, il, o->off1, data);
787f7e95	279	if (!more && o->off2)
17abbe89	280	val_store(ilp, il, o->off2, data);
e1f36503 JA	281	}
	282	break;
	283	}
	284	case FIO_OPT_STR_SET: {
	285	fio_opt_str_set_fn *fn = o->cb;
	286
	287	if (fn)
	288	ret = fn(data);
	289	else {
17abbe89 JA	290	if (first)
17abbe89 JA	291	val_store(ilp, 1, o->off1, data);
787f7e95	292	if (!more && o->off2)
17abbe89	293	val_store(ilp, 1, o->off2, data);
e1f36503 JA	294	}
	295	break;
	296	}
	297	default:
1e97cce9	298	fprintf(stderr, "Bad option type %u\n", o->type);
e1f36503 JA	299	ret = 1;
e1f36503 JA	300	}
cb2c86fd	301
e1f36503	302	return ret;
cb2c86fd JA	303	}
cb2c86fd JA	304
f90eff5a JA	305	static int handle_option(struct fio_option o, const char ptr, void *data)
f90eff5a JA	306	{
92b586f8	307	const char *ptr2 = NULL;
787f7e95	308	int r1, r2;
f90eff5a JA	309
f90eff5a JA	310	/*
787f7e95 JA	311	* See if we have a second set of parameters, hidden after a comma.
	312	* Do this before parsing the first round, to check if we should
	313	* copy set 1 options to set 2.
f90eff5a	314	*/
0c9baf91	315	if (ptr) {
92b586f8	316	ptr2 = strchr(ptr, ',');
0c9baf91 JA	317	if (!ptr2)
	318	ptr2 = strchr(ptr, ':');
	319	}
787f7e95 JA	320
	321	/*
	322	* Don't return early if parsing the first option fails - if
	323	* we are doing multiple arguments, we can allow the first one
	324	* being empty.
	325	*/
	326	r1 = __handle_option(o, ptr, data, 1, !!ptr2);
	327
f90eff5a	328	if (!ptr2)
787f7e95	329	return r1;
f90eff5a JA	330
f90eff5a JA	331	ptr2++;
787f7e95 JA	332	r2 = __handle_option(o, ptr2, data, 0, 0);
	333
	334	return r1 && r2;
f90eff5a JA	335	}
f90eff5a JA	336
b4692828 JA	337	int parse_cmd_option(const char opt, const char val,
	338	struct fio_option options, void data)
	339	{
	340	struct fio_option *o;
	341
	342	o = find_option(options, opt);
	343	if (!o) {
	344	fprintf(stderr, "Bad option %s\n", opt);
	345	return 1;
	346	}
	347
b1508cf9 JA	348	if (!handle_option(o, val, data))
	349	return 0;
	350
	351	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	352	return 1;
b4692828 JA	353	}
b4692828 JA	354
e1f36503	355	int parse_option(const char opt, struct fio_option options, void *data)
cb2c86fd	356	{
b4692828	357	struct fio_option *o;
e1f36503 JA	358	char pre, post;
	359	char tmp[64];
	360
0bbab0e7	361	strncpy(tmp, opt, sizeof(tmp) - 1);
e1f36503 JA	362
	363	pre = strchr(tmp, '=');
	364	if (pre) {
	365	post = pre;
	366	*pre = '\0';
	367	pre = tmp;
	368	post++;
	369	o = find_option(options, pre);
	370	} else {
	371	o = find_option(options, tmp);
	372	post = NULL;
	373	}
cb2c86fd	374
e1f36503 JA	375	if (!o) {
	376	fprintf(stderr, "Bad option %s\n", tmp);
	377	return 1;
	378	}
	379
b1508cf9 JA	380	if (!handle_option(o, post, data))
	381	return 0;
	382
	383	fprintf(stderr, "fio: failed parsing %s\n", opt);
	384	return 1;
e1f36503	385	}
fd28ca49	386
15f7918f JA	387	static void show_option_range(struct fio_option *o)
	388	{
	389	if (!o->minval && !o->maxval)
	390	return;
	391
	392	printf("%16s: min=%d, max=%d\n", "range", o->minval, o->maxval);
	393	}
	394
	395	static void show_option_values(struct fio_option *o)
	396	{
	397	const char *msg;
	398	int i = 0;
	399
	400	if (!o->posval)
	401	return;
	402
	403	do {
	404	msg = o->posval[i];
	405	if (!msg)
	406	break;
	407
	408	if (!i)
	409	printf("%16s: ", "valid values");
	410
	411	printf("%s,", msg);
	412	i++;
	413	} while (1);
	414
	415	if (i)
	416	printf("\n");
	417	}
	418
fd28ca49 JA	419	int show_cmd_help(struct fio_option options, const char name)
	420	{
	421	int show_all = !strcmp(name, "all");
fd28ca49 JA	422	const char *typehelp[] = {
	423	"string (opt=bla)",
	424	"string with possible k/m/g postfix (opt=4k)",
	425	"string with range and postfix (opt=1k-4k)",
	426	"string with time postfix (opt=10s)",
	427	"string (opt=bla)",
	428	"string with dual range (opt=1k-4k,4k-8k)",
	429	"integer value (opt=100)",
13335ddb	430	"boolean value (opt=1)",
fd28ca49 JA	431	"no argument (opt)",
fd28ca49 JA	432	};
4945ba12	433	struct fio_option *o;
29fc6afe	434	int found = 0;
fd28ca49	435
4945ba12	436	for (o = &options[0]; o->name; o++) {
fd28ca49 JA	437	int match = !strcmp(name, o->name);
	438
	439	if (show_all \|\| match) {
29fc6afe	440	found = 1;
facba0e5	441	printf("%16s: %s\n", o->name, o->help);
4945ba12 JA	442	if (show_all)
4945ba12 JA	443	continue;
fd28ca49 JA	444	}
fd28ca49 JA	445
70df2f19 JA	446	if (!match)
	447	continue;
	448
4945ba12 JA	449	printf("%16s: %s\n", "type", typehelp[o->type]);
	450	printf("%16s: %s\n", "default", o->def ? o->def : "no default");
	451	show_option_range(o);
	452	show_option_values(o);
fd28ca49 JA	453	}
fd28ca49 JA	454
29fc6afe JA	455	if (found)
29fc6afe JA	456	return 0;
fd28ca49	457
29fc6afe JA	458	printf("No such command: %s\n", name);
29fc6afe JA	459	return 1;
fd28ca49	460	}
ee738499	461
13335ddb JA	462	/*
	463	* Handle parsing of default parameters.
	464	*/
ee738499 JA	465	void fill_default_options(void data, struct fio_option options)
ee738499 JA	466	{
4945ba12	467	struct fio_option *o;
ee738499	468
4945ba12	469	for (o = &options[0]; o->name; o++)
ee738499 JA	470	if (o->def)
ee738499 JA	471	handle_option(o, o->def, data);
ee738499	472	}
13335ddb JA	473
	474	/*
	475	* Sanitize the options structure. For now it just sets min/max for bool
5b0a8880	476	* values and whether both callback and offsets are given.
13335ddb JA	477	*/
	478	void options_init(struct fio_option *options)
	479	{
4945ba12	480	struct fio_option *o;
13335ddb	481
4945ba12	482	for (o = &options[0]; o->name; o++) {
13335ddb JA	483	if (o->type == FIO_OPT_BOOL) {
	484	o->minval = 0;
	485	o->maxval = 1;
	486	}
5b0a8880 JA	487	if (o->cb && (o->off1 \|\| o->off2 \|\| o->off3 \|\| o->off4))
5b0a8880 JA	488	fprintf(stderr, "Option %s: both cb and offset given\n", o->name);
13335ddb JA	489	}
13335ddb JA	490	}