[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 <stdlib.h>

#include "parse.h"
#include "debug.h"

static struct fio_option *fio_options;

static int vp_cmp(const void *p1, const void *p2)
{
	const struct value_pair *vp1 = p1;
	const struct value_pair *vp2 = p2;

	return strlen(vp2->ival) - strlen(vp1->ival);
}

static void posval_sort(struct fio_option *o, struct value_pair *vpmap)
{
	const struct value_pair *vp;
	int entries;

	memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair));

	for (entries = 0; entries < PARSE_MAX_VP; entries++) {
		vp = &o->posval[entries];
		if (!vp->ival || vp->ival[0] == '\0')
			break;

		memcpy(&vpmap[entries], vp, sizeof(*vp));
	}

	qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
}

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

	printf("%20s: min=%d", "range", o->minval);
	if (o->maxval)
		printf(", max=%d", o->maxval);
	printf("\n");
}

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

	do {
		const struct value_pair *vp = &o->posval[i];

		if (!vp->ival)
			break;

		printf("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
		if (vp->help)
			printf(" %s", vp->help);
		printf("\n");
		i++;
	} while (i < PARSE_MAX_VP);

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

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;
	case 'e':
	case 'E':
		return 1024 * 1024 * 1024 * 1024UL;
	default:
		return 1;
	}
}

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

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

	if (strstr(str, "0x") || strstr(str, "0X"))
		base = 16;
	else
		base = 10;

	*val = strtoll(str, NULL, base);
	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++;

	*p = s;
}

void strip_blank_end(char *p)
{
	char *start = p, *s;

	s = strchr(p, ';');
	if (s)
		*s = '\0';
	s = strchr(p, '#');
	if (s)
		*s = '\0';
	if (s)
		p = s;

	s = p + strlen(p);
	while ((isspace(*s) || iscntrl(*s)) && (s > start))
		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 (strstr(p, "0x") || strstr(p, "0X")) {
		if (sscanf(p, "%x", val) == 1)
			return 0;
	} else {
		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;

	dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
							o->type, ptr);

	if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
		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;
		const struct value_pair *vp;
		struct value_pair posval[PARSE_MAX_VP];
		int i;

		posval_sort(o, posval);

		for (i = 0; i < PARSE_MAX_VP; i++) {
			vp = &posval[i];
			if (!vp->ival || vp->ival[0] == '\0')
				break;
			ret = 1;
			if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
				ret = 0;
				if (!o->off1)
					break;
				val_store(ilp, vp->oval, o->off1, data);
				break;
			}
		}

		if (ret)
			show_option_values(o);
		else if (fn)
			ret = fn(data, ptr);
		break;
	}
	case FIO_OPT_STR_VAL_TIME:
		is_time = 1;
	case FIO_OPT_INT:
	case FIO_OPT_STR_VAL: {
		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_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: {
		fio_opt_str_fn *fn = o->cb;

		cp = td_var(data, o->off1);
		*cp = strdup(ptr);
		if (fn) {
			ret = fn(data, ptr);
			if (ret) {
				free(*cp);
				*cp = NULL;
			}
		}
		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 (o->off3 && o->off4) {
				val_store(ilp, ul1, o->off3, data);
				val_store(ilp, ul2, o->off4, data);
			}
		}

		break;
	}
	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;
	}
	case FIO_OPT_DEPRECATED:
		fprintf(stdout, "Option %s is deprecated\n", o->name);
		break;
	default:
		fprintf(stderr, "Bad option type %u\n", o->type);
		ret = 1;
	}

	if (ret)
		return ret;

	if (o->verify)
		ret = o->verify(o, data);

	return ret;
}

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

	dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);

	ptr = NULL;
	if (__ptr)
		ptr = strdup(__ptr);

	/*
	 * 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 &&
	    (o->type != FIO_OPT_STR_STORE) &&
	    (o->type != FIO_OPT_STR)) {
		ptr2 = strchr(ptr, ',');
		if (ptr2 && *(ptr2 + 1) == '\0')
			*ptr2 = '\0';
		if (!ptr2)
			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) {
		if (ptr)
			free(ptr);
		return r1;
	}

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

	if (ptr)
		free(ptr);
	return r1 && r2;
}

static struct fio_option *get_option(const char *opt,
				     struct fio_option *options, char **post)
{
	struct fio_option *o;
	char *ret;

	ret = strchr(opt, '=');
	if (ret) {
		*post = ret;
		*ret = '\0';
		ret = (char *) opt;
		(*post)++;
		strip_blank_end(ret);
		o = find_option(options, ret);
	} else {
		o = find_option(options, opt);
		*post = NULL;
	}

	return o;
}

static int opt_cmp(const void *p1, const void *p2)
{
	struct fio_option *o1, *o2;
	char *s1, *s2, *foo;
	int prio1, prio2;

	s1 = strdup(*((char **) p1));
	s2 = strdup(*((char **) p2));

	o1 = get_option(s1, fio_options, &foo);
	o2 = get_option(s2, fio_options, &foo);
	
	prio1 = prio2 = 0;
	if (o1)
		prio1 = o1->prio;
	if (o2)
		prio2 = o2->prio;

	free(s1);
	free(s2);
	return prio2 - prio1;
}

void sort_options(char **opts, struct fio_option *options, int num_opts)
{
	fio_options = options;
	qsort(opts, num_opts, sizeof(char *), opt_cmp);
	fio_options = NULL;
}

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;
}

/*
 * Return a copy of the input string with substrings of the form ${VARNAME}
 * substituted with the value of the environment variable VARNAME.  The
 * substitution always occurs, even if VARNAME is empty or the corresponding
 * environment variable undefined.
 */
static char *option_dup_subs(const char *opt)
{
	char out[OPT_LEN_MAX+1];
	char in[OPT_LEN_MAX+1];
	char *outptr = out;
	char *inptr = in;
	char *ch1, *ch2, *env;
	ssize_t nchr = OPT_LEN_MAX;
	size_t envlen;

	in[OPT_LEN_MAX] = '\0';
	strncpy(in, opt, OPT_LEN_MAX);

	while (*inptr && nchr > 0) {
		if (inptr[0] == '$' && inptr[1] == '{') {
			ch2 = strchr(inptr, '}');
			if (ch2 && inptr+1 < ch2) {
				ch1 = inptr+2;
				inptr = ch2+1;
				*ch2 = '\0';

				env = getenv(ch1);
				if (env) {
					envlen = strlen(env);
					if (envlen <= nchr) {
						memcpy(outptr, env, envlen);
						outptr += envlen;
						nchr -= envlen;
					}
				}

				continue;
			}
		}

		*outptr++ = *inptr++;
		--nchr;
	}

	*outptr = '\0';
	return strdup(out);
}

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

	tmp = option_dup_subs(opt);

	o = get_option(tmp, options, &post);
	if (!o) {
		fprintf(stderr, "Bad option <%s>\n", tmp);
		free(tmp);
		return 1;
	}

	if (!handle_option(o, post, data)) {
		free(tmp);
		return 0;
	}

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

/*
 * Option match, levenshtein distance. Handy for not quite remembering what
 * the option name is.
 */
static int string_distance(const char *s1, const char *s2)
{
	unsigned int s1_len = strlen(s1);
	unsigned int s2_len = strlen(s2);
	unsigned int *p, *q, *r;
	unsigned int i, j;

	p = malloc(sizeof(unsigned int) * (s2_len + 1));
	q = malloc(sizeof(unsigned int) * (s2_len + 1));

	p[0] = 0;
	for (i = 1; i <= s2_len; i++)
		p[i] = p[i - 1] + 1;

	for (i = 1; i <= s1_len; i++) {
		q[0] = p[0] + 1;
		for (j = 1; j <= s2_len; j++) {
			unsigned int sub = p[j - 1];

			if (s1[i - 1] != s2[j - 1])
				sub++;

			q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
		}
		r = p;
		p = q;
		q = r;
	}

	i = p[s2_len];
	free(p);
	free(q);
	return i;
}

static void show_option_help(struct fio_option *o)
{
	const char *typehelp[] = {
		"string (opt=bla)",
		"string with possible k/m/g postfix (opt=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)",
	};

	if (o->alias)
		printf("%20s: %s\n", "alias", o->alias);

	printf("%20s: %s\n", "type", typehelp[o->type]);
	printf("%20s: %s\n", "default", o->def ? o->def : "no default");
	show_option_range(o);
	show_option_values(o);
}

static struct fio_option *find_child(struct fio_option *options,
				     struct fio_option *o)
{
	struct fio_option *__o;

	for (__o = options + 1; __o->name; __o++)
		if (__o->parent && !strcmp(__o->parent, o->name))
			return __o;

	return NULL;
}

static void __print_option(struct fio_option *o, struct fio_option *org,
			   int level)
{
	char name[256], *p;
	int depth;

	if (!o)
		return;
	if (!org)
		org = o;

	p = name;
	depth = level;
	while (depth--)
		p += sprintf(p, "%s", "  ");

	sprintf(p, "%s", o->name);

	printf("%-24s: %s\n", name, o->help);
}

static void print_option(struct fio_option *o)
{
	struct fio_option *parent;
	struct fio_option *__o;
	unsigned int printed;
	unsigned int level;

	__print_option(o, NULL, 0);
	parent = o;
	level = 0;
	do {
		level++;
		printed = 0;

		while ((__o = find_child(o, parent)) != NULL) {
			__print_option(__o, o, level);
			o = __o;
			printed++;
		}

		parent = o;
	} while (printed);
}

int show_cmd_help(struct fio_option *options, const char *name)
{
	struct fio_option *o, *closest;
	unsigned int best_dist;
	int found = 0;
	int show_all = 0;

	if (!name || !strcmp(name, "all"))
		show_all = 1;

	closest = NULL;
	best_dist = -1;
	for (o = &options[0]; o->name; o++) {
		int match = 0;

		if (o->type == FIO_OPT_DEPRECATED)
			continue;

		if (name) {
			if (!strcmp(name, o->name) ||
			    (o->alias && !strcmp(name, o->alias)))
				match = 1;
			else {
				unsigned int dist;

				dist = string_distance(name, o->name);
				if (dist < best_dist) {
					best_dist = dist;
					closest = o;
				}
			}
		}

		if (show_all || match) {
			found = 1;
			if (match)
				printf("%24s: %s\n", o->name, o->help);
			if (show_all) {
				if (!o->parent)
					print_option(o);
				continue;
			}
		}

		if (!match)
			continue;

		show_option_help(o);
	}

	if (found)
		return 0;

	printf("No such command: %s", name);
	if (closest) {
		printf(" - showing closest match\n");
		printf("%20s: %s\n", closest->name, closest->help);
		show_option_help(closest);
	} else
		printf("\n");

	return 1;
}

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

	dprint(FD_PARSE, "filling default options\n");

	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;

	dprint(FD_PARSE, "init options\n");

	for (o = &options[0]; o->name; o++) {
		if (o->type == FIO_OPT_DEPRECATED)
			continue;
		if (o->type == FIO_OPT_BOOL) {
			o->minval = 0;
			o->maxval = 1;
		}
		if (o->type == FIO_OPT_STR_SET && o->def) {
			fprintf(stderr, "Option %s: string set option with"
					" default will always be true\n",
						o->name);
		}
		if (!o->cb && !o->off1) {
			fprintf(stderr, "Option %s: neither cb nor offset"
					" given\n", o->name);
		}
		if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE)
			continue;
		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>
88b5a391	11	#include <stdlib.h>
cb2c86fd JA	12
cb2c86fd JA	13	#include "parse.h"
a3d741fa	14	#include "debug.h"
cb2c86fd	15
3b8b7135 JA	16	static struct fio_option *fio_options;
3b8b7135 JA	17
f085737f JA	18	static int vp_cmp(const void p1, const void p2)
	19	{
	20	const struct value_pair *vp1 = p1;
	21	const struct value_pair *vp2 = p2;
	22
	23	return strlen(vp2->ival) - strlen(vp1->ival);
	24	}
	25
	26	static void posval_sort(struct fio_option o, struct value_pair vpmap)
	27	{
	28	const struct value_pair *vp;
	29	int entries;
	30
	31	memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair));
	32
	33	for (entries = 0; entries < PARSE_MAX_VP; entries++) {
	34	vp = &o->posval[entries];
	35	if (!vp->ival \|\| vp->ival[0] == '\0')
	36	break;
	37
	38	memcpy(&vpmap[entries], vp, sizeof(*vp));
	39	}
	40
	41	qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
	42	}
	43
b1ec1da6 JA	44	static void show_option_range(struct fio_option *o)
	45	{
	46	if (!o->minval && !o->maxval)
	47	return;
	48
3980127d JA	49	printf("%20s: min=%d", "range", o->minval);
	50	if (o->maxval)
	51	printf(", max=%d", o->maxval);
	52	printf("\n");
b1ec1da6 JA	53	}
	54
	55	static void show_option_values(struct fio_option *o)
	56	{
b1ec1da6 JA	57	int i = 0;
	58
	59	do {
7837213b	60	const struct value_pair *vp = &o->posval[i];
b1ec1da6	61
7837213b JA	62	if (!vp->ival)
7837213b JA	63	break;
b1ec1da6	64
7837213b JA	65	printf("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
	66	if (vp->help)
	67	printf(" %s", vp->help);
	68	printf("\n");
b1ec1da6 JA	69	i++;
	70	} while (i < PARSE_MAX_VP);
	71
	72	if (i)
	73	printf("\n");
	74	}
	75
cb2c86fd JA	76	static unsigned long get_mult_time(char c)
	77	{
	78	switch (c) {
5ec10eaa JA	79	case 'm':
	80	case 'M':
	81	return 60;
	82	case 'h':
	83	case 'H':
	84	return 60 * 60;
	85	case 'd':
	86	case 'D':
	87	return 24 * 60 * 60;
	88	default:
	89	return 1;
cb2c86fd JA	90	}
	91	}
	92
	93	static unsigned long get_mult_bytes(char c)
	94	{
	95	switch (c) {
5ec10eaa JA	96	case 'k':
	97	case 'K':
	98	return 1024;
	99	case 'm':
	100	case 'M':
	101	return 1024 * 1024;
	102	case 'g':
	103	case 'G':
	104	return 1024 * 1024 * 1024;
	105	case 'e':
	106	case 'E':
	107	return 1024 * 1024 * 1024 * 1024UL;
	108	default:
	109	return 1;
cb2c86fd JA	110	}
	111	}
	112
	113	/*
e1f36503	114	* convert string into decimal value, noting any size suffix
cb2c86fd	115	*/
564ca972	116	int str_to_decimal(const char str, long long val, int kilo)
cb2c86fd	117	{
b347f9da	118	int len, base;
cb2c86fd	119
cb2c86fd	120	len = strlen(str);
f90eff5a JA	121	if (!len)
f90eff5a JA	122	return 1;
cb2c86fd	123
b347f9da JA	124	if (strstr(str, "0x") \|\| strstr(str, "0X"))
	125	base = 16;
	126	else
	127	base = 10;
	128
	129	*val = strtoll(str, NULL, base);
cda866ca	130	if (*val == LONG_MAX && errno == ERANGE)
cb2c86fd JA	131	return 1;
	132
	133	if (kilo)
	134	val = get_mult_bytes(str[len - 1]);
	135	else
	136	val = get_mult_time(str[len - 1]);
787f7e95	137
cb2c86fd JA	138	return 0;
	139	}
	140
63f29372	141	static int check_str_bytes(const char p, long long val)
cb2c86fd	142	{
cb2c86fd JA	143	return str_to_decimal(p, val, 1);
	144	}
	145
63f29372	146	static int check_str_time(const char p, long long val)
cb2c86fd	147	{
cb2c86fd JA	148	return str_to_decimal(p, val, 0);
	149	}
	150
	151	void strip_blank_front(char **p)
	152	{
	153	char s = p;
	154
	155	while (isspace(*s))
	156	s++;
4d651dad JA	157
4d651dad JA	158	*p = s;
cb2c86fd JA	159	}
	160
	161	void strip_blank_end(char *p)
	162	{
853ee7fc	163	char start = p, s;
523bfadb JA	164
	165	s = strchr(p, ';');
	166	if (s)
	167	*s = '\0';
	168	s = strchr(p, '#');
	169	if (s)
	170	*s = '\0';
	171	if (s)
	172	p = s;
	173
7f7e6e59	174	s = p + strlen(p);
853ee7fc	175	while ((isspace(s) \|\| iscntrl(s)) && (s > start))
cb2c86fd JA	176	s--;
	177
	178	*(s + 1) = '\0';
	179	}
	180
63f29372	181	static int check_range_bytes(const char str, long val)
cb2c86fd JA	182	{
	183	char suffix;
	184
787f7e95 JA	185	if (!strlen(str))
	186	return 1;
	187
cb2c86fd JA	188	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
	189	val = get_mult_bytes(suffix);
	190	return 0;
	191	}
	192
	193	if (sscanf(str, "%lu", val) == 1)
	194	return 0;
	195
	196	return 1;
	197	}
	198
63f29372	199	static int check_int(const char p, int val)
cb2c86fd	200	{
787f7e95 JA	201	if (!strlen(p))
787f7e95 JA	202	return 1;
d78ee463	203	if (strstr(p, "0x") \|\| strstr(p, "0X")) {
a61bdfd8 JA	204	if (sscanf(p, "%x", val) == 1)
	205	return 0;
	206	} else {
	207	if (sscanf(p, "%u", val) == 1)
	208	return 0;
	209	}
cb2c86fd	210
e1f36503 JA	211	return 1;
e1f36503 JA	212	}
cb2c86fd	213
e1f36503 JA	214	static struct fio_option find_option(struct fio_option options,
	215	const char *opt)
	216	{
4945ba12	217	struct fio_option *o;
cb2c86fd	218
4945ba12	219	for (o = &options[0]; o->name; o++) {
e1f36503 JA	220	if (!strcmp(o->name, opt))
e1f36503 JA	221	return o;
03b74b3e JA	222	else if (o->alias && !strcmp(o->alias, opt))
03b74b3e JA	223	return o;
33963c6c	224	}
cb2c86fd	225
e1f36503	226	return NULL;
cb2c86fd JA	227	}
cb2c86fd JA	228
17abbe89 JA	229	#define val_store(ptr, val, off, data) \
	230	do { \
	231	ptr = td_var((data), (off)); \
	232	*ptr = (val); \
	233	} while (0)
	234
f90eff5a	235	static int __handle_option(struct fio_option o, const char ptr, void *data,
787f7e95	236	int first, int more)
cb2c86fd	237	{
63f29372 JA	238	int il, *ilp;
	239	long long ull, *ullp;
	240	long ul1, ul2;
b4692828	241	char **cp;
e1f36503	242	int ret = 0, is_time = 0;
cb2c86fd	243
a3d741fa JA	244	dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
	245	o->type, ptr);
	246
e3cedca7	247	if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
08e26e35 JA	248	fprintf(stderr, "Option %s requires an argument\n", o->name);
	249	return 1;
	250	}
	251
e1f36503 JA	252	switch (o->type) {
	253	case FIO_OPT_STR: {
	254	fio_opt_str_fn *fn = o->cb;
b1ec1da6	255	const struct value_pair *vp;
f085737f	256	struct value_pair posval[PARSE_MAX_VP];
b1ec1da6 JA	257	int i;
b1ec1da6 JA	258
f085737f JA	259	posval_sort(o, posval);
f085737f JA	260
b1ec1da6	261	for (i = 0; i < PARSE_MAX_VP; i++) {
f085737f	262	vp = &posval[i];
b1ec1da6 JA	263	if (!vp->ival \|\| vp->ival[0] == '\0')
b1ec1da6 JA	264	break;
6612a27b	265	ret = 1;
b1ec1da6 JA	266	if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
	267	ret = 0;
	268	if (!o->off1)
	269	break;
	270	val_store(ilp, vp->oval, o->off1, data);
	271	break;
	272	}
	273	}
cb2c86fd	274
b1ec1da6 JA	275	if (ret)
	276	show_option_values(o);
	277	else if (fn)
	278	ret = fn(data, ptr);
e1f36503 JA	279	break;
	280	}
	281	case FIO_OPT_STR_VAL_TIME:
	282	is_time = 1;
f7fa2653	283	case FIO_OPT_INT:
e01b22b8	284	case FIO_OPT_STR_VAL: {
e1f36503 JA	285	fio_opt_str_val_fn *fn = o->cb;
	286
	287	if (is_time)
	288	ret = check_str_time(ptr, &ull);
	289	else
	290	ret = check_str_bytes(ptr, &ull);
	291
	292	if (ret)
	293	break;
	294
db8e0165	295	if (o->maxval && ull > o->maxval) {
5ec10eaa JA	296	fprintf(stderr, "max value out of range: %lld"
5ec10eaa JA	297	" (%d max)\n", ull, o->maxval);
db8e0165 JA	298	return 1;
	299	}
	300	if (o->minval && ull < o->minval) {
5ec10eaa JA	301	fprintf(stderr, "min value out of range: %lld"
5ec10eaa JA	302	" (%d min)\n", ull, o->minval);
db8e0165 JA	303	return 1;
db8e0165 JA	304	}
e1f36503 JA	305
	306	if (fn)
	307	ret = fn(data, &ull);
	308	else {
e01b22b8	309	if (o->type == FIO_OPT_INT) {
17abbe89 JA	310	if (first)
17abbe89 JA	311	val_store(ilp, ull, o->off1, data);
787f7e95	312	if (!more && o->off2)
17abbe89	313	val_store(ilp, ull, o->off2, data);
75e6f36f	314	} else {
17abbe89 JA	315	if (first)
17abbe89 JA	316	val_store(ullp, ull, o->off1, data);
787f7e95	317	if (!more && o->off2)
17abbe89	318	val_store(ullp, ull, o->off2, data);
75e6f36f	319	}
e1f36503 JA	320	}
	321	break;
	322	}
af52b345 JA	323	case FIO_OPT_STR_STORE: {
	324	fio_opt_str_fn *fn = o->cb;
	325
e1f36503 JA	326	cp = td_var(data, o->off1);
e1f36503 JA	327	*cp = strdup(ptr);
af52b345 JA	328	if (fn) {
	329	ret = fn(data, ptr);
	330	if (ret) {
	331	free(*cp);
	332	*cp = NULL;
	333	}
	334	}
e1f36503	335	break;
af52b345	336	}
e1f36503	337	case FIO_OPT_RANGE: {
b765a372	338	char tmp[128];
e1f36503 JA	339	char p1, p2;
e1f36503 JA	340
0bbab0e7	341	strncpy(tmp, ptr, sizeof(tmp) - 1);
b765a372 JA	342
b765a372 JA	343	p1 = strchr(tmp, '-');
e1f36503	344	if (!p1) {
0c9baf91 JA	345	p1 = strchr(tmp, ':');
	346	if (!p1) {
	347	ret = 1;
	348	break;
	349	}
e1f36503 JA	350	}
	351
	352	p2 = p1 + 1;
	353	*p1 = '\0';
b765a372	354	p1 = tmp;
e1f36503 JA	355
e1f36503 JA	356	ret = 1;
5ec10eaa JA	357	if (!check_range_bytes(p1, &ul1) &&
5ec10eaa JA	358	!check_range_bytes(p2, &ul2)) {
e1f36503	359	ret = 0;
e1f36503	360	if (ul1 > ul2) {
f90eff5a JA	361	unsigned long foo = ul1;
	362
	363	ul1 = ul2;
	364	ul2 = foo;
	365	}
	366
	367	if (first) {
17abbe89 JA	368	val_store(ilp, ul1, o->off1, data);
	369	val_store(ilp, ul2, o->off2, data);
	370	}
97e8cd44	371	if (o->off3 && o->off4) {
17abbe89 JA	372	val_store(ilp, ul1, o->off3, data);
17abbe89 JA	373	val_store(ilp, ul2, o->off4, data);
e1f36503	374	}
17abbe89 JA	375	}
17abbe89 JA	376
e1f36503 JA	377	break;
e1f36503 JA	378	}
13335ddb	379	case FIO_OPT_BOOL: {
e1f36503 JA	380	fio_opt_int_fn *fn = o->cb;
	381
	382	ret = check_int(ptr, &il);
	383	if (ret)
	384	break;
	385
db8e0165	386	if (o->maxval && il > (int) o->maxval) {
5ec10eaa JA	387	fprintf(stderr, "max value out of range: %d (%d max)\n",
5ec10eaa JA	388	il, o->maxval);
db8e0165 JA	389	return 1;
	390	}
	391	if (o->minval && il < o->minval) {
5ec10eaa JA	392	fprintf(stderr, "min value out of range: %d (%d min)\n",
5ec10eaa JA	393	il, o->minval);
db8e0165 JA	394	return 1;
db8e0165 JA	395	}
e1f36503	396
76a43db4 JA	397	if (o->neg)
	398	il = !il;
	399
e1f36503 JA	400	if (fn)
	401	ret = fn(data, &il);
	402	else {
17abbe89 JA	403	if (first)
17abbe89 JA	404	val_store(ilp, il, o->off1, data);
787f7e95	405	if (!more && o->off2)
17abbe89	406	val_store(ilp, il, o->off2, data);
e1f36503 JA	407	}
	408	break;
	409	}
	410	case FIO_OPT_STR_SET: {
	411	fio_opt_str_set_fn *fn = o->cb;
	412
	413	if (fn)
	414	ret = fn(data);
	415	else {
17abbe89 JA	416	if (first)
17abbe89 JA	417	val_store(ilp, 1, o->off1, data);
787f7e95	418	if (!more && o->off2)
17abbe89	419	val_store(ilp, 1, o->off2, data);
e1f36503 JA	420	}
	421	break;
	422	}
15ca150e JA	423	case FIO_OPT_DEPRECATED:
	424	fprintf(stdout, "Option %s is deprecated\n", o->name);
	425	break;
e1f36503	426	default:
1e97cce9	427	fprintf(stderr, "Bad option type %u\n", o->type);
e1f36503 JA	428	ret = 1;
e1f36503 JA	429	}
cb2c86fd	430
70a4c0c8 JA	431	if (ret)
	432	return ret;
	433
	434	if (o->verify)
	435	ret = o->verify(o, data);
	436
e1f36503	437	return ret;
cb2c86fd JA	438	}
cb2c86fd JA	439
7c8f1a5c	440	static int handle_option(struct fio_option o, const char __ptr, void *data)
f90eff5a	441	{
7c8f1a5c	442	char ptr, ptr2 = NULL;
787f7e95	443	int r1, r2;
f90eff5a	444
7c8f1a5c JA	445	dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);
	446
	447	ptr = NULL;
	448	if (__ptr)
	449	ptr = strdup(__ptr);
a3d741fa	450
f90eff5a	451	/*
787f7e95 JA	452	* See if we have a second set of parameters, hidden after a comma.
	453	* Do this before parsing the first round, to check if we should
	454	* copy set 1 options to set 2.
f90eff5a	455	*/
ad231bc4 JB	456	if (ptr &&
	457	(o->type != FIO_OPT_STR_STORE) &&
	458	(o->type != FIO_OPT_STR)) {
92b586f8	459	ptr2 = strchr(ptr, ',');
7c8f1a5c JA	460	if (ptr2 && *(ptr2 + 1) == '\0')
7c8f1a5c JA	461	*ptr2 = '\0';
0c9baf91 JA	462	if (!ptr2)
0c9baf91 JA	463	ptr2 = strchr(ptr, ':');
b486f76a JA	464	if (!ptr2)
b486f76a JA	465	ptr2 = strchr(ptr, '-');
0c9baf91	466	}
787f7e95 JA	467
	468	/*
	469	* Don't return early if parsing the first option fails - if
	470	* we are doing multiple arguments, we can allow the first one
	471	* being empty.
	472	*/
	473	r1 = __handle_option(o, ptr, data, 1, !!ptr2);
	474
7c8f1a5c JA	475	if (!ptr2) {
	476	if (ptr)
	477	free(ptr);
787f7e95	478	return r1;
7c8f1a5c	479	}
f90eff5a JA	480
f90eff5a JA	481	ptr2++;
787f7e95 JA	482	r2 = __handle_option(o, ptr2, data, 0, 0);
787f7e95 JA	483
7c8f1a5c JA	484	if (ptr)
7c8f1a5c JA	485	free(ptr);
787f7e95	486	return r1 && r2;
f90eff5a JA	487	}
f90eff5a JA	488
3b8b7135 JA	489	static struct fio_option get_option(const char opt,
	490	struct fio_option options, char *post)
	491	{
	492	struct fio_option *o;
	493	char *ret;
	494
	495	ret = strchr(opt, '=');
	496	if (ret) {
	497	*post = ret;
	498	*ret = '\0';
	499	ret = (char *) opt;
	500	(*post)++;
43c129b4	501	strip_blank_end(ret);
3b8b7135 JA	502	o = find_option(options, ret);
	503	} else {
	504	o = find_option(options, opt);
	505	*post = NULL;
	506	}
	507
	508	return o;
	509	}
	510
	511	static int opt_cmp(const void p1, const void p2)
	512	{
	513	struct fio_option o1, o2;
	514	char s1, s2, *foo;
8cdabc1d	515	int prio1, prio2;
3b8b7135 JA	516
	517	s1 = strdup(((char *) p1));
	518	s2 = strdup(((char *) p2));
	519
	520	o1 = get_option(s1, fio_options, &foo);
	521	o2 = get_option(s2, fio_options, &foo);
8cdabc1d JA	522
	523	prio1 = prio2 = 0;
	524	if (o1)
	525	prio1 = o1->prio;
	526	if (o2)
	527	prio2 = o2->prio;
3b8b7135 JA	528
	529	free(s1);
	530	free(s2);
8cdabc1d	531	return prio2 - prio1;
3b8b7135 JA	532	}
	533
	534	void sort_options(char *opts, struct fio_option options, int num_opts)
	535	{
	536	fio_options = options;
	537	qsort(opts, num_opts, sizeof(char *), opt_cmp);
	538	fio_options = NULL;
	539	}
	540
b4692828 JA	541	int parse_cmd_option(const char opt, const char val,
	542	struct fio_option options, void data)
	543	{
	544	struct fio_option *o;
	545
	546	o = find_option(options, opt);
	547	if (!o) {
43c129b4	548	fprintf(stderr, "Bad option <%s>\n", opt);
b4692828 JA	549	return 1;
	550	}
	551
b1508cf9 JA	552	if (!handle_option(o, val, data))
	553	return 0;
	554
	555	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	556	return 1;
b4692828 JA	557	}
b4692828 JA	558
88b5a391 AC	559	/*
	560	* Return a copy of the input string with substrings of the form ${VARNAME}
	561	* substituted with the value of the environment variable VARNAME. The
	562	* substitution always occurs, even if VARNAME is empty or the corresponding
	563	* environment variable undefined.
	564	*/
	565	static char option_dup_subs(const char opt)
	566	{
	567	char out[OPT_LEN_MAX+1];
	568	char in[OPT_LEN_MAX+1];
	569	char *outptr = out;
	570	char *inptr = in;
	571	char ch1, ch2, *env;
	572	ssize_t nchr = OPT_LEN_MAX;
	573	size_t envlen;
	574
	575	in[OPT_LEN_MAX] = '\0';
	576	strncpy(in, opt, OPT_LEN_MAX);
	577
	578	while (*inptr && nchr > 0) {
	579	if (inptr[0] == '$' && inptr[1] == '{') {
	580	ch2 = strchr(inptr, '}');
	581	if (ch2 && inptr+1 < ch2) {
	582	ch1 = inptr+2;
	583	inptr = ch2+1;
	584	*ch2 = '\0';
	585
	586	env = getenv(ch1);
	587	if (env) {
	588	envlen = strlen(env);
	589	if (envlen <= nchr) {
	590	memcpy(outptr, env, envlen);
	591	outptr += envlen;
	592	nchr -= envlen;
	593	}
	594	}
	595
	596	continue;
	597	}
	598	}
	599
	600	outptr++ = inptr++;
	601	--nchr;
	602	}
	603
	604	*outptr = '\0';
	605	return strdup(out);
	606	}
	607
e1f36503	608	int parse_option(const char opt, struct fio_option options, void *data)
cb2c86fd	609	{
b4692828	610	struct fio_option *o;
3b8b7135	611	char post, tmp;
e1f36503	612
88b5a391	613	tmp = option_dup_subs(opt);
e1f36503	614
3b8b7135	615	o = get_option(tmp, options, &post);
e1f36503	616	if (!o) {
43c129b4	617	fprintf(stderr, "Bad option <%s>\n", tmp);
0401bca6	618	free(tmp);
e1f36503 JA	619	return 1;
	620	}
	621
0401bca6 JA	622	if (!handle_option(o, post, data)) {
0401bca6 JA	623	free(tmp);
b1508cf9	624	return 0;
0401bca6	625	}
b1508cf9 JA	626
b1508cf9 JA	627	fprintf(stderr, "fio: failed parsing %s\n", opt);
0401bca6	628	free(tmp);
b1508cf9	629	return 1;
e1f36503	630	}
fd28ca49	631
0e9f7fac JA	632	/*
	633	* Option match, levenshtein distance. Handy for not quite remembering what
	634	* the option name is.
	635	*/
	636	static int string_distance(const char s1, const char s2)
	637	{
	638	unsigned int s1_len = strlen(s1);
	639	unsigned int s2_len = strlen(s2);
	640	unsigned int p, q, *r;
	641	unsigned int i, j;
	642
	643	p = malloc(sizeof(unsigned int) * (s2_len + 1));
	644	q = malloc(sizeof(unsigned int) * (s2_len + 1));
	645
	646	p[0] = 0;
	647	for (i = 1; i <= s2_len; i++)
	648	p[i] = p[i - 1] + 1;
	649
	650	for (i = 1; i <= s1_len; i++) {
	651	q[0] = p[0] + 1;
	652	for (j = 1; j <= s2_len; j++) {
	653	unsigned int sub = p[j - 1];
	654
	655	if (s1[i - 1] != s2[j - 1])
	656	sub++;
	657
	658	q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
	659	}
	660	r = p;
	661	p = q;
	662	q = r;
	663	}
	664
	665	i = p[s2_len];
	666	free(p);
	667	free(q);
	668	return i;
	669	}
	670
	671	static void show_option_help(struct fio_option *o)
fd28ca49	672	{
fd28ca49 JA	673	const char *typehelp[] = {
	674	"string (opt=bla)",
	675	"string with possible k/m/g postfix (opt=4k)",
fd28ca49 JA	676	"string with time postfix (opt=10s)",
	677	"string (opt=bla)",
	678	"string with dual range (opt=1k-4k,4k-8k)",
	679	"integer value (opt=100)",
13335ddb	680	"boolean value (opt=1)",
fd28ca49 JA	681	"no argument (opt)",
fd28ca49 JA	682	};
0e9f7fac	683
d2bb7fea JA	684	if (o->alias)
	685	printf("%20s: %s\n", "alias", o->alias);
	686
0e9f7fac JA	687	printf("%20s: %s\n", "type", typehelp[o->type]);
	688	printf("%20s: %s\n", "default", o->def ? o->def : "no default");
	689	show_option_range(o);
	690	show_option_values(o);
	691	}
	692
afdf9352 JA	693	static struct fio_option find_child(struct fio_option options,
	694	struct fio_option *o)
	695	{
	696	struct fio_option *__o;
	697
fdf28744 JA	698	for (__o = options + 1; __o->name; __o++)
fdf28744 JA	699	if (__o->parent && !strcmp(__o->parent, o->name))
afdf9352 JA	700	return __o;
	701
	702	return NULL;
	703	}
	704
323d9113 JA	705	static void __print_option(struct fio_option o, struct fio_option org,
323d9113 JA	706	int level)
afdf9352 JA	707	{
afdf9352 JA	708	char name[256], *p;
323d9113	709	int depth;
afdf9352 JA	710
	711	if (!o)
	712	return;
ef9aff52 JA	713	if (!org)
ef9aff52 JA	714	org = o;
5ec10eaa	715
afdf9352	716	p = name;
323d9113 JA	717	depth = level;
	718	while (depth--)
	719	p += sprintf(p, "%s", " ");
afdf9352 JA	720
	721	sprintf(p, "%s", o->name);
	722
	723	printf("%-24s: %s\n", name, o->help);
323d9113 JA	724	}
	725
	726	static void print_option(struct fio_option *o)
	727	{
	728	struct fio_option *parent;
	729	struct fio_option *__o;
	730	unsigned int printed;
	731	unsigned int level;
	732
	733	__print_option(o, NULL, 0);
	734	parent = o;
	735	level = 0;
	736	do {
	737	level++;
	738	printed = 0;
	739
	740	while ((__o = find_child(o, parent)) != NULL) {
	741	__print_option(__o, o, level);
	742	o = __o;
	743	printed++;
	744	}
	745
	746	parent = o;
	747	} while (printed);
afdf9352 JA	748	}
afdf9352 JA	749
0e9f7fac JA	750	int show_cmd_help(struct fio_option options, const char name)
	751	{
	752	struct fio_option o, closest;
	753	unsigned int best_dist;
29fc6afe	754	int found = 0;
320beefe JA	755	int show_all = 0;
	756
	757	if (!name \|\| !strcmp(name, "all"))
	758	show_all = 1;
fd28ca49	759
0e9f7fac JA	760	closest = NULL;
0e9f7fac JA	761	best_dist = -1;
4945ba12	762	for (o = &options[0]; o->name; o++) {
320beefe JA	763	int match = 0;
320beefe JA	764
15ca150e JA	765	if (o->type == FIO_OPT_DEPRECATED)
	766	continue;
	767
0e9f7fac	768	if (name) {
7f9348f8 JA	769	if (!strcmp(name, o->name) \|\|
7f9348f8 JA	770	(o->alias && !strcmp(name, o->alias)))
0e9f7fac JA	771	match = 1;
	772	else {
	773	unsigned int dist;
	774
	775	dist = string_distance(name, o->name);
	776	if (dist < best_dist) {
	777	best_dist = dist;
	778	closest = o;
	779	}
	780	}
	781	}
fd28ca49 JA	782
fd28ca49 JA	783	if (show_all \|\| match) {
29fc6afe	784	found = 1;
c167dedc	785	if (match)
afdf9352	786	printf("%24s: %s\n", o->name, o->help);
c167dedc	787	if (show_all) {
afdf9352	788	if (!o->parent)
323d9113	789	print_option(o);
4945ba12	790	continue;
c167dedc	791	}
fd28ca49 JA	792	}
fd28ca49 JA	793
70df2f19 JA	794	if (!match)
	795	continue;
	796
0e9f7fac	797	show_option_help(o);
fd28ca49 JA	798	}
fd28ca49 JA	799
29fc6afe JA	800	if (found)
29fc6afe JA	801	return 0;
fd28ca49	802
0e9f7fac JA	803	printf("No such command: %s", name);
	804	if (closest) {
	805	printf(" - showing closest match\n");
	806	printf("%20s: %s\n", closest->name, closest->help);
	807	show_option_help(closest);
	808	} else
	809	printf("\n");
	810
29fc6afe	811	return 1;
fd28ca49	812	}
ee738499	813
13335ddb JA	814	/*
	815	* Handle parsing of default parameters.
	816	*/
ee738499 JA	817	void fill_default_options(void data, struct fio_option options)
ee738499 JA	818	{
4945ba12	819	struct fio_option *o;
ee738499	820
a3d741fa JA	821	dprint(FD_PARSE, "filling default options\n");
a3d741fa JA	822
4945ba12	823	for (o = &options[0]; o->name; o++)
ee738499 JA	824	if (o->def)
ee738499 JA	825	handle_option(o, o->def, data);
ee738499	826	}
13335ddb JA	827
	828	/*
	829	* Sanitize the options structure. For now it just sets min/max for bool
5b0a8880	830	* values and whether both callback and offsets are given.
13335ddb JA	831	*/
	832	void options_init(struct fio_option *options)
	833	{
4945ba12	834	struct fio_option *o;
13335ddb	835
a3d741fa JA	836	dprint(FD_PARSE, "init options\n");
a3d741fa JA	837
4945ba12	838	for (o = &options[0]; o->name; o++) {
15ca150e JA	839	if (o->type == FIO_OPT_DEPRECATED)
15ca150e JA	840	continue;
13335ddb JA	841	if (o->type == FIO_OPT_BOOL) {
	842	o->minval = 0;
	843	o->maxval = 1;
	844	}
5ec10eaa JA	845	if (o->type == FIO_OPT_STR_SET && o->def) {
	846	fprintf(stderr, "Option %s: string set option with"
	847	" default will always be true\n",
	848	o->name);
	849	}
	850	if (!o->cb && !o->off1) {
	851	fprintf(stderr, "Option %s: neither cb nor offset"
	852	" given\n", o->name);
	853	}
af52b345	854	if (o->type == FIO_OPT_STR \|\| o->type == FIO_OPT_STR_STORE)
b1ec1da6	855	continue;
5ec10eaa JA	856	if (o->cb && (o->off1 \|\| o->off2 \|\| o->off3 \|\| o->off4)) {
	857	fprintf(stderr, "Option %s: both cb and offset given\n",
	858	o->name);
	859	}
13335ddb JA	860	}
13335ddb JA	861	}