[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"
#include "options.h"

static struct fio_option *fio_options;
extern unsigned int fio_get_kb_base(void *);

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, FILE *out)
{
	if (!o->minval && !o->maxval)
		return;

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

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

	for (i = 0; i < PARSE_MAX_VP; i++) {
		const struct value_pair *vp = &o->posval[i];

		if (!vp->ival)
			continue;

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

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

static void show_option_help(struct fio_option *o, FILE *out)
{
	const char *typehelp[] = {
		"invalid",
		"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)",
		"deprecated",
	};

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

	fprintf(out, "%20s: %s\n", "type", typehelp[o->type]);
	fprintf(out, "%20s: %s\n", "default", o->def ? o->def : "no default");
	if (o->prof_name)
		fprintf(out, "%20s: only for profile '%s'\n", "valid", o->prof_name);
	show_option_range(o, stdout);
	show_option_values(o);
}

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 long get_mult_bytes(char c, void *data)
{
	unsigned int kb_base = fio_get_kb_base(data);
	unsigned long long ret = 1;

	switch (c) {
	default:
		break;
	case 'p':
	case 'P':
		ret *= (unsigned long long) kb_base;
	case 't':
	case 'T':
		ret *= (unsigned long long) kb_base;
	case 'g':
	case 'G':
		ret *= (unsigned long long) kb_base;
	case 'm':
	case 'M':
		ret *= (unsigned long long) kb_base;
	case 'k':
	case 'K':
		ret *= (unsigned long long) kb_base;
		break;
	}

	return ret;
}

/*
 * convert string into decimal value, noting any size suffix
 */
int str_to_decimal(const char *str, long long *val, int kilo, void *data)
{
	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) {
		const char *p;
		/*
		 * if the last char is 'b' or 'B', the user likely used
		 * "1gb" instead of just "1g". If the second to last is also
		 * a letter, adjust.
		 */
		p = str + len - 1;
		if ((*p == 'b' || *p == 'B') && isalpha(*(p - 1)))
			--p;

		*val *= get_mult_bytes(*p, data);
	} else
		*val *= get_mult_time(str[len - 1]);

	return 0;
}

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

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

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, void *data)
{
	char suffix;

	if (!strlen(str))
		return 1;

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

#define val_store(ptr, val, off, or, data)		\
	do {						\
		ptr = td_var((data), (off));		\
		if ((or))				\
			*ptr |= (val);			\
		else					\
			*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:
	case FIO_OPT_STR_MULTI: {
		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);

		ret = 1;
		for (i = 0; i < PARSE_MAX_VP; i++) {
			vp = &posval[i];
			if (!vp->ival || vp->ival[0] == '\0')
				continue;
			if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
				ret = 0;
				if (o->roff1) {
					if (vp->or)
						*(unsigned int *) o->roff1 |= vp->oval;
					else
						*(unsigned int *) o->roff1 = vp->oval;
				} else {
					if (!o->off1)
						continue;
					val_store(ilp, vp->oval, o->off1, vp->or, data);
				}
				continue;
			}
		}

		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, data);

		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) {
					if (o->roff1)
						*(unsigned long long *) o->roff1 = ull;
					else
						val_store(ilp, ull, o->off1, 0, data);
				}
				if (!more) {
					if (o->roff2)
						*(unsigned long long *) o->roff2 = ull;
					else if (o->off2)
						val_store(ilp, ull, o->off2, 0, data);
				}
			} else {
				if (first) {
					if (o->roff1)
						*(unsigned long long *) o->roff1 = ull;
					else
						val_store(ullp, ull, o->off1, 0, data);
				}
				if (!more) {
					if (o->roff2)
						*(unsigned long long *) o->roff2 =  ull;
					else if (o->off2)
						val_store(ullp, ull, o->off2, 0, data);
				}
			}
		}
		break;
	}
	case FIO_OPT_STR_STORE: {
		fio_opt_str_fn *fn = o->cb;

		if (o->roff1)
			cp = (char **) o->roff1;
		else
			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, data) &&
		    !check_range_bytes(p2, &ul2, data)) {
			ret = 0;
			if (ul1 > ul2) {
				unsigned long foo = ul1;

				ul1 = ul2;
				ul2 = foo;
			}

			if (first) {
				if (o->roff1)
					*(unsigned long *) o->roff1 = ul1;
				else
					val_store(ilp, ul1, o->off1, 0, data);
				if (o->roff2)
					*(unsigned long *) o->roff2 = ul2;
				else
					val_store(ilp, ul2, o->off2, 0, data);
			}
			if (o->roff3 && o->roff4) {
				*(unsigned long *) o->roff3 = ul1;
				*(unsigned long *) o->roff4 = ul2;
			} else if (o->off3 && o->off4) {
				val_store(ilp, ul1, o->off3, 0, data);
				val_store(ilp, ul2, o->off4, 0, 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) {
				if (o->roff1)
					*(unsigned int *)o->roff1 = il;
				else
					val_store(ilp, il, o->off1, 0, data);
			}
			if (!more) {
				if (o->roff2)
					*(unsigned int *) o->roff2 = il;
				else if (o->off2)
					val_store(ilp, il, o->off2, 0, data);
			}
		}
		break;
	}
	case FIO_OPT_STR_SET: {
		fio_opt_str_set_fn *fn = o->cb;

		if (fn)
			ret = fn(data);
		else {
			if (first) {
				if (o->roff1)
					*(unsigned int *) o->roff1 = 1;
				else
					val_store(ilp, 1, o->off1, 0, data);
			}
			if (!more) {
				if (o->roff2)
					*(unsigned int *) o->roff2 = 1;
				else if (o->off2)
					val_store(ilp, 1, o->off2, 0, 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);
		if (ret) {
			fprintf(stderr,"Correct format for offending option\n");
			fprintf(stderr, "%20s: %s\n", o->name, o->help);
			show_option_help(o, stderr);
		}
	}

	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;

	if (strlen(opt) + 1 > OPT_LEN_MAX) {
		fprintf(stderr, "OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
		return NULL;
	}

	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);
	if (!tmp)
		return 1;

	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 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 (!exec_profile && o->prof_name)
			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("%20s: %s\n", o->name, o->help);
			if (show_all) {
				if (!o->parent)
					print_option(o);
				continue;
			}
		}

		if (!match)
			continue;

		show_option_help(o, stdout);
	}

	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, stdout);
	} 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);
}

void option_init(struct fio_option *o)
{
	if (o->type == FIO_OPT_DEPRECATED)
		return;
	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 && !o->roff1)) {
		fprintf(stderr, "Option %s: neither cb nor offset given\n",
							o->name);
	}
	if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE ||
	    o->type == FIO_OPT_STR_MULTI)
		return;
	if (o->cb && ((o->off1 || o->off2 || o->off3 || o->off4) ||
		      (o->roff1 || o->roff2 || o->roff3 || o->roff4))) {
		fprintf(stderr, "Option %s: both cb and offset given\n",
							 o->name);
	}
}

/*
 * 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++)
		option_init(o);
}
Commit	Line	Data
	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	#include <stdlib.h>
	12
	13	#include "parse.h"
	14	#include "debug.h"
	15	#include "options.h"
	16
	17	static struct fio_option *fio_options;
	18	extern unsigned int fio_get_kb_base(void *);
	19
	20	static int vp_cmp(const void p1, const void p2)
	21	{
	22	const struct value_pair *vp1 = p1;
	23	const struct value_pair *vp2 = p2;
	24
	25	return strlen(vp2->ival) - strlen(vp1->ival);
	26	}
	27
	28	static void posval_sort(struct fio_option o, struct value_pair vpmap)
	29	{
	30	const struct value_pair *vp;
	31	int entries;
	32
	33	memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair));
	34
	35	for (entries = 0; entries < PARSE_MAX_VP; entries++) {
	36	vp = &o->posval[entries];
	37	if (!vp->ival \|\| vp->ival[0] == '\0')
	38	break;
	39
	40	memcpy(&vpmap[entries], vp, sizeof(*vp));
	41	}
	42
	43	qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
	44	}
	45
	46	static void show_option_range(struct fio_option o, FILE out)
	47	{
	48	if (!o->minval && !o->maxval)
	49	return;
	50
	51	fprintf(out, "%20s: min=%d", "range", o->minval);
	52	if (o->maxval)
	53	fprintf(out, ", max=%d", o->maxval);
	54	fprintf(out, "\n");
	55	}
	56
	57	static void show_option_values(struct fio_option *o)
	58	{
	59	int i;
	60
	61	for (i = 0; i < PARSE_MAX_VP; i++) {
	62	const struct value_pair *vp = &o->posval[i];
	63
	64	if (!vp->ival)
	65	continue;
	66
	67	printf("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
	68	if (vp->help)
	69	printf(" %s", vp->help);
	70	printf("\n");
	71	}
	72
	73	if (i)
	74	printf("\n");
	75	}
	76
	77	static void show_option_help(struct fio_option o, FILE out)
	78	{
	79	const char *typehelp[] = {
	80	"invalid",
	81	"string (opt=bla)",
	82	"string with possible k/m/g postfix (opt=4k)",
	83	"string with time postfix (opt=10s)",
	84	"string (opt=bla)",
	85	"string with dual range (opt=1k-4k,4k-8k)",
	86	"integer value (opt=100)",
	87	"boolean value (opt=1)",
	88	"no argument (opt)",
	89	"deprecated",
	90	};
	91
	92	if (o->alias)
	93	fprintf(out, "%20s: %s\n", "alias", o->alias);
	94
	95	fprintf(out, "%20s: %s\n", "type", typehelp[o->type]);
	96	fprintf(out, "%20s: %s\n", "default", o->def ? o->def : "no default");
	97	if (o->prof_name)
	98	fprintf(out, "%20s: only for profile '%s'\n", "valid", o->prof_name);
	99	show_option_range(o, stdout);
	100	show_option_values(o);
	101	}
	102
	103	static unsigned long get_mult_time(char c)
	104	{
	105	switch (c) {
	106	case 'm':
	107	case 'M':
	108	return 60;
	109	case 'h':
	110	case 'H':
	111	return 60 * 60;
	112	case 'd':
	113	case 'D':
	114	return 24 * 60 * 60;
	115	default:
	116	return 1;
	117	}
	118	}
	119
	120	static unsigned long long get_mult_bytes(char c, void *data)
	121	{
	122	unsigned int kb_base = fio_get_kb_base(data);
	123	unsigned long long ret = 1;
	124
	125	switch (c) {
	126	default:
	127	break;
	128	case 'p':
	129	case 'P':
	130	ret *= (unsigned long long) kb_base;
	131	case 't':
	132	case 'T':
	133	ret *= (unsigned long long) kb_base;
	134	case 'g':
	135	case 'G':
	136	ret *= (unsigned long long) kb_base;
	137	case 'm':
	138	case 'M':
	139	ret *= (unsigned long long) kb_base;
	140	case 'k':
	141	case 'K':
	142	ret *= (unsigned long long) kb_base;
	143	break;
	144	}
	145
	146	return ret;
	147	}
	148
	149	/*
	150	* convert string into decimal value, noting any size suffix
	151	*/
	152	int str_to_decimal(const char str, long long val, int kilo, void *data)
	153	{
	154	int len, base;
	155
	156	len = strlen(str);
	157	if (!len)
	158	return 1;
	159
	160	if (strstr(str, "0x") \|\| strstr(str, "0X"))
	161	base = 16;
	162	else
	163	base = 10;
	164
	165	*val = strtoll(str, NULL, base);
	166	if (*val == LONG_MAX && errno == ERANGE)
	167	return 1;
	168
	169	if (kilo) {
	170	const char *p;
	171	/*
	172	* if the last char is 'b' or 'B', the user likely used
	173	* "1gb" instead of just "1g". If the second to last is also
	174	* a letter, adjust.
	175	*/
	176	p = str + len - 1;
	177	if ((p == 'b' \|\| p == 'B') && isalpha(*(p - 1)))
	178	--p;
	179
	180	val = get_mult_bytes(*p, data);
	181	} else
	182	val = get_mult_time(str[len - 1]);
	183
	184	return 0;
	185	}
	186
	187	static int check_str_bytes(const char p, long long val, void *data)
	188	{
	189	return str_to_decimal(p, val, 1, data);
	190	}
	191
	192	static int check_str_time(const char p, long long val)
	193	{
	194	return str_to_decimal(p, val, 0, NULL);
	195	}
	196
	197	void strip_blank_front(char **p)
	198	{
	199	char s = p;
	200
	201	while (isspace(*s))
	202	s++;
	203
	204	*p = s;
	205	}
	206
	207	void strip_blank_end(char *p)
	208	{
	209	char start = p, s;
	210
	211	s = strchr(p, ';');
	212	if (s)
	213	*s = '\0';
	214	s = strchr(p, '#');
	215	if (s)
	216	*s = '\0';
	217	if (s)
	218	p = s;
	219
	220	s = p + strlen(p);
	221	while ((isspace(s) \|\| iscntrl(s)) && (s > start))
	222	s--;
	223
	224	*(s + 1) = '\0';
	225	}
	226
	227	static int check_range_bytes(const char str, long val, void *data)
	228	{
	229	char suffix;
	230
	231	if (!strlen(str))
	232	return 1;
	233
	234	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
	235	val = get_mult_bytes(suffix, data);
	236	return 0;
	237	}
	238
	239	if (sscanf(str, "%lu", val) == 1)
	240	return 0;
	241
	242	return 1;
	243	}
	244
	245	static int check_int(const char p, int val)
	246	{
	247	if (!strlen(p))
	248	return 1;
	249	if (strstr(p, "0x") \|\| strstr(p, "0X")) {
	250	if (sscanf(p, "%x", val) == 1)
	251	return 0;
	252	} else {
	253	if (sscanf(p, "%u", val) == 1)
	254	return 0;
	255	}
	256
	257	return 1;
	258	}
	259
	260	#define val_store(ptr, val, off, or, data) \
	261	do { \
	262	ptr = td_var((data), (off)); \
	263	if ((or)) \
	264	*ptr \|= (val); \
	265	else \
	266	*ptr = (val); \
	267	} while (0)
	268
	269	static int __handle_option(struct fio_option o, const char ptr, void *data,
	270	int first, int more)
	271	{
	272	int il, *ilp;
	273	long long ull, *ullp;
	274	long ul1, ul2;
	275	char **cp;
	276	int ret = 0, is_time = 0;
	277
	278	dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
	279	o->type, ptr);
	280
	281	if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
	282	fprintf(stderr, "Option %s requires an argument\n", o->name);
	283	return 1;
	284	}
	285
	286	switch (o->type) {
	287	case FIO_OPT_STR:
	288	case FIO_OPT_STR_MULTI: {
	289	fio_opt_str_fn *fn = o->cb;
	290	const struct value_pair *vp;
	291	struct value_pair posval[PARSE_MAX_VP];
	292	int i;
	293
	294	posval_sort(o, posval);
	295
	296	ret = 1;
	297	for (i = 0; i < PARSE_MAX_VP; i++) {
	298	vp = &posval[i];
	299	if (!vp->ival \|\| vp->ival[0] == '\0')
	300	continue;
	301	if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
	302	ret = 0;
	303	if (o->roff1) {
	304	if (vp->or)
	305	(unsigned int ) o->roff1 \|= vp->oval;
	306	else
	307	(unsigned int ) o->roff1 = vp->oval;
	308	} else {
	309	if (!o->off1)
	310	continue;
	311	val_store(ilp, vp->oval, o->off1, vp->or, data);
	312	}
	313	continue;
	314	}
	315	}
	316
	317	if (ret)
	318	show_option_values(o);
	319	else if (fn)
	320	ret = fn(data, ptr);
	321	break;
	322	}
	323	case FIO_OPT_STR_VAL_TIME:
	324	is_time = 1;
	325	case FIO_OPT_INT:
	326	case FIO_OPT_STR_VAL: {
	327	fio_opt_str_val_fn *fn = o->cb;
	328
	329	if (is_time)
	330	ret = check_str_time(ptr, &ull);
	331	else
	332	ret = check_str_bytes(ptr, &ull, data);
	333
	334	if (ret)
	335	break;
	336
	337	if (o->maxval && ull > o->maxval) {
	338	fprintf(stderr, "max value out of range: %lld"
	339	" (%d max)\n", ull, o->maxval);
	340	return 1;
	341	}
	342	if (o->minval && ull < o->minval) {
	343	fprintf(stderr, "min value out of range: %lld"
	344	" (%d min)\n", ull, o->minval);
	345	return 1;
	346	}
	347
	348	if (fn)
	349	ret = fn(data, &ull);
	350	else {
	351	if (o->type == FIO_OPT_INT) {
	352	if (first) {
	353	if (o->roff1)
	354	(unsigned long long ) o->roff1 = ull;
	355	else
	356	val_store(ilp, ull, o->off1, 0, data);
	357	}
	358	if (!more) {
	359	if (o->roff2)
	360	(unsigned long long ) o->roff2 = ull;
	361	else if (o->off2)
	362	val_store(ilp, ull, o->off2, 0, data);
	363	}
	364	} else {
	365	if (first) {
	366	if (o->roff1)
	367	(unsigned long long ) o->roff1 = ull;
	368	else
	369	val_store(ullp, ull, o->off1, 0, data);
	370	}
	371	if (!more) {
	372	if (o->roff2)
	373	(unsigned long long ) o->roff2 = ull;
	374	else if (o->off2)
	375	val_store(ullp, ull, o->off2, 0, data);
	376	}
	377	}
	378	}
	379	break;
	380	}
	381	case FIO_OPT_STR_STORE: {
	382	fio_opt_str_fn *fn = o->cb;
	383
	384	if (o->roff1)
	385	cp = (char **) o->roff1;
	386	else
	387	cp = td_var(data, o->off1);
	388
	389	*cp = strdup(ptr);
	390	if (fn) {
	391	ret = fn(data, ptr);
	392	if (ret) {
	393	free(*cp);
	394	*cp = NULL;
	395	}
	396	}
	397	break;
	398	}
	399	case FIO_OPT_RANGE: {
	400	char tmp[128];
	401	char p1, p2;
	402
	403	strncpy(tmp, ptr, sizeof(tmp) - 1);
	404
	405	p1 = strchr(tmp, '-');
	406	if (!p1) {
	407	p1 = strchr(tmp, ':');
	408	if (!p1) {
	409	ret = 1;
	410	break;
	411	}
	412	}
	413
	414	p2 = p1 + 1;
	415	*p1 = '\0';
	416	p1 = tmp;
	417
	418	ret = 1;
	419	if (!check_range_bytes(p1, &ul1, data) &&
	420	!check_range_bytes(p2, &ul2, data)) {
	421	ret = 0;
	422	if (ul1 > ul2) {
	423	unsigned long foo = ul1;
	424
	425	ul1 = ul2;
	426	ul2 = foo;
	427	}
	428
	429	if (first) {
	430	if (o->roff1)
	431	(unsigned long ) o->roff1 = ul1;
	432	else
	433	val_store(ilp, ul1, o->off1, 0, data);
	434	if (o->roff2)
	435	(unsigned long ) o->roff2 = ul2;
	436	else
	437	val_store(ilp, ul2, o->off2, 0, data);
	438	}
	439	if (o->roff3 && o->roff4) {
	440	(unsigned long ) o->roff3 = ul1;
	441	(unsigned long ) o->roff4 = ul2;
	442	} else if (o->off3 && o->off4) {
	443	val_store(ilp, ul1, o->off3, 0, data);
	444	val_store(ilp, ul2, o->off4, 0, data);
	445	}
	446	}
	447
	448	break;
	449	}
	450	case FIO_OPT_BOOL: {
	451	fio_opt_int_fn *fn = o->cb;
	452
	453	ret = check_int(ptr, &il);
	454	if (ret)
	455	break;
	456
	457	if (o->maxval && il > (int) o->maxval) {
	458	fprintf(stderr, "max value out of range: %d (%d max)\n",
	459	il, o->maxval);
	460	return 1;
	461	}
	462	if (o->minval && il < o->minval) {
	463	fprintf(stderr, "min value out of range: %d (%d min)\n",
	464	il, o->minval);
	465	return 1;
	466	}
	467
	468	if (o->neg)
	469	il = !il;
	470
	471	if (fn)
	472	ret = fn(data, &il);
	473	else {
	474	if (first) {
	475	if (o->roff1)
	476	(unsigned int )o->roff1 = il;
	477	else
	478	val_store(ilp, il, o->off1, 0, data);
	479	}
	480	if (!more) {
	481	if (o->roff2)
	482	(unsigned int ) o->roff2 = il;
	483	else if (o->off2)
	484	val_store(ilp, il, o->off2, 0, data);
	485	}
	486	}
	487	break;
	488	}
	489	case FIO_OPT_STR_SET: {
	490	fio_opt_str_set_fn *fn = o->cb;
	491
	492	if (fn)
	493	ret = fn(data);
	494	else {
	495	if (first) {
	496	if (o->roff1)
	497	(unsigned int ) o->roff1 = 1;
	498	else
	499	val_store(ilp, 1, o->off1, 0, data);
	500	}
	501	if (!more) {
	502	if (o->roff2)
	503	(unsigned int ) o->roff2 = 1;
	504	else if (o->off2)
	505	val_store(ilp, 1, o->off2, 0, data);
	506	}
	507	}
	508	break;
	509	}
	510	case FIO_OPT_DEPRECATED:
	511	fprintf(stdout, "Option %s is deprecated\n", o->name);
	512	break;
	513	default:
	514	fprintf(stderr, "Bad option type %u\n", o->type);
	515	ret = 1;
	516	}
	517
	518	if (ret)
	519	return ret;
	520
	521	if (o->verify) {
	522	ret = o->verify(o, data);
	523	if (ret) {
	524	fprintf(stderr,"Correct format for offending option\n");
	525	fprintf(stderr, "%20s: %s\n", o->name, o->help);
	526	show_option_help(o, stderr);
	527	}
	528	}
	529
	530	return ret;
	531	}
	532
	533	static int handle_option(struct fio_option o, const char __ptr, void *data)
	534	{
	535	char ptr, ptr2 = NULL;
	536	int r1, r2;
	537
	538	dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);
	539
	540	ptr = NULL;
	541	if (__ptr)
	542	ptr = strdup(__ptr);
	543
	544	/*
	545	* See if we have a second set of parameters, hidden after a comma.
	546	* Do this before parsing the first round, to check if we should
	547	* copy set 1 options to set 2.
	548	*/
	549	if (ptr &&
	550	(o->type != FIO_OPT_STR_STORE) &&
	551	(o->type != FIO_OPT_STR)) {
	552	ptr2 = strchr(ptr, ',');
	553	if (ptr2 && *(ptr2 + 1) == '\0')
	554	*ptr2 = '\0';
	555	if (!ptr2)
	556	ptr2 = strchr(ptr, ':');
	557	if (!ptr2)
	558	ptr2 = strchr(ptr, '-');
	559	}
	560
	561	/*
	562	* Don't return early if parsing the first option fails - if
	563	* we are doing multiple arguments, we can allow the first one
	564	* being empty.
	565	*/
	566	r1 = __handle_option(o, ptr, data, 1, !!ptr2);
	567
	568	if (!ptr2) {
	569	if (ptr)
	570	free(ptr);
	571	return r1;
	572	}
	573
	574	ptr2++;
	575	r2 = __handle_option(o, ptr2, data, 0, 0);
	576
	577	if (ptr)
	578	free(ptr);
	579	return r1 && r2;
	580	}
	581
	582	static struct fio_option get_option(const char opt,
	583	struct fio_option options, char *post)
	584	{
	585	struct fio_option *o;
	586	char *ret;
	587
	588	ret = strchr(opt, '=');
	589	if (ret) {
	590	*post = ret;
	591	*ret = '\0';
	592	ret = (char *) opt;
	593	(*post)++;
	594	strip_blank_end(ret);
	595	o = find_option(options, ret);
	596	} else {
	597	o = find_option(options, opt);
	598	*post = NULL;
	599	}
	600
	601	return o;
	602	}
	603
	604	static int opt_cmp(const void p1, const void p2)
	605	{
	606	struct fio_option o1, o2;
	607	char s1, s2, *foo;
	608	int prio1, prio2;
	609
	610	s1 = strdup(((char *) p1));
	611	s2 = strdup(((char *) p2));
	612
	613	o1 = get_option(s1, fio_options, &foo);
	614	o2 = get_option(s2, fio_options, &foo);
	615
	616	prio1 = prio2 = 0;
	617	if (o1)
	618	prio1 = o1->prio;
	619	if (o2)
	620	prio2 = o2->prio;
	621
	622	free(s1);
	623	free(s2);
	624	return prio2 - prio1;
	625	}
	626
	627	void sort_options(char *opts, struct fio_option options, int num_opts)
	628	{
	629	fio_options = options;
	630	qsort(opts, num_opts, sizeof(char *), opt_cmp);
	631	fio_options = NULL;
	632	}
	633
	634	int parse_cmd_option(const char opt, const char val,
	635	struct fio_option options, void data)
	636	{
	637	struct fio_option *o;
	638
	639	o = find_option(options, opt);
	640	if (!o) {
	641	fprintf(stderr, "Bad option <%s>\n", opt);
	642	return 1;
	643	}
	644
	645	if (!handle_option(o, val, data))
	646	return 0;
	647
	648	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	649	return 1;
	650	}
	651
	652	/*
	653	* Return a copy of the input string with substrings of the form ${VARNAME}
	654	* substituted with the value of the environment variable VARNAME. The
	655	* substitution always occurs, even if VARNAME is empty or the corresponding
	656	* environment variable undefined.
	657	*/
	658	static char option_dup_subs(const char opt)
	659	{
	660	char out[OPT_LEN_MAX+1];
	661	char in[OPT_LEN_MAX+1];
	662	char *outptr = out;
	663	char *inptr = in;
	664	char ch1, ch2, *env;
	665	ssize_t nchr = OPT_LEN_MAX;
	666	size_t envlen;
	667
	668	if (strlen(opt) + 1 > OPT_LEN_MAX) {
	669	fprintf(stderr, "OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
	670	return NULL;
	671	}
	672
	673	in[OPT_LEN_MAX] = '\0';
	674	strncpy(in, opt, OPT_LEN_MAX);
	675
	676	while (*inptr && nchr > 0) {
	677	if (inptr[0] == '$' && inptr[1] == '{') {
	678	ch2 = strchr(inptr, '}');
	679	if (ch2 && inptr+1 < ch2) {
	680	ch1 = inptr+2;
	681	inptr = ch2+1;
	682	*ch2 = '\0';
	683
	684	env = getenv(ch1);
	685	if (env) {
	686	envlen = strlen(env);
	687	if (envlen <= nchr) {
	688	memcpy(outptr, env, envlen);
	689	outptr += envlen;
	690	nchr -= envlen;
	691	}
	692	}
	693
	694	continue;
	695	}
	696	}
	697
	698	outptr++ = inptr++;
	699	--nchr;
	700	}
	701
	702	*outptr = '\0';
	703	return strdup(out);
	704	}
	705
	706	int parse_option(const char opt, struct fio_option options, void *data)
	707	{
	708	struct fio_option *o;
	709	char post, tmp;
	710
	711	tmp = option_dup_subs(opt);
	712	if (!tmp)
	713	return 1;
	714
	715	o = get_option(tmp, options, &post);
	716	if (!o) {
	717	fprintf(stderr, "Bad option <%s>\n", tmp);
	718	free(tmp);
	719	return 1;
	720	}
	721
	722	if (!handle_option(o, post, data)) {
	723	free(tmp);
	724	return 0;
	725	}
	726
	727	fprintf(stderr, "fio: failed parsing %s\n", opt);
	728	free(tmp);
	729	return 1;
	730	}
	731
	732	/*
	733	* Option match, levenshtein distance. Handy for not quite remembering what
	734	* the option name is.
	735	*/
	736	static int string_distance(const char s1, const char s2)
	737	{
	738	unsigned int s1_len = strlen(s1);
	739	unsigned int s2_len = strlen(s2);
	740	unsigned int p, q, *r;
	741	unsigned int i, j;
	742
	743	p = malloc(sizeof(unsigned int) * (s2_len + 1));
	744	q = malloc(sizeof(unsigned int) * (s2_len + 1));
	745
	746	p[0] = 0;
	747	for (i = 1; i <= s2_len; i++)
	748	p[i] = p[i - 1] + 1;
	749
	750	for (i = 1; i <= s1_len; i++) {
	751	q[0] = p[0] + 1;
	752	for (j = 1; j <= s2_len; j++) {
	753	unsigned int sub = p[j - 1];
	754
	755	if (s1[i - 1] != s2[j - 1])
	756	sub++;
	757
	758	q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
	759	}
	760	r = p;
	761	p = q;
	762	q = r;
	763	}
	764
	765	i = p[s2_len];
	766	free(p);
	767	free(q);
	768	return i;
	769	}
	770
	771	static struct fio_option find_child(struct fio_option options,
	772	struct fio_option *o)
	773	{
	774	struct fio_option *__o;
	775
	776	for (__o = options + 1; __o->name; __o++)
	777	if (__o->parent && !strcmp(__o->parent, o->name))
	778	return __o;
	779
	780	return NULL;
	781	}
	782
	783	static void __print_option(struct fio_option o, struct fio_option org,
	784	int level)
	785	{
	786	char name[256], *p;
	787	int depth;
	788
	789	if (!o)
	790	return;
	791	if (!org)
	792	org = o;
	793
	794	p = name;
	795	depth = level;
	796	while (depth--)
	797	p += sprintf(p, "%s", " ");
	798
	799	sprintf(p, "%s", o->name);
	800
	801	printf("%-24s: %s\n", name, o->help);
	802	}
	803
	804	static void print_option(struct fio_option *o)
	805	{
	806	struct fio_option *parent;
	807	struct fio_option *__o;
	808	unsigned int printed;
	809	unsigned int level;
	810
	811	__print_option(o, NULL, 0);
	812	parent = o;
	813	level = 0;
	814	do {
	815	level++;
	816	printed = 0;
	817
	818	while ((__o = find_child(o, parent)) != NULL) {
	819	__print_option(__o, o, level);
	820	o = __o;
	821	printed++;
	822	}
	823
	824	parent = o;
	825	} while (printed);
	826	}
	827
	828	int show_cmd_help(struct fio_option options, const char name)
	829	{
	830	struct fio_option o, closest;
	831	unsigned int best_dist;
	832	int found = 0;
	833	int show_all = 0;
	834
	835	if (!name \|\| !strcmp(name, "all"))
	836	show_all = 1;
	837
	838	closest = NULL;
	839	best_dist = -1;
	840	for (o = &options[0]; o->name; o++) {
	841	int match = 0;
	842
	843	if (o->type == FIO_OPT_DEPRECATED)
	844	continue;
	845	if (!exec_profile && o->prof_name)
	846	continue;
	847
	848	if (name) {
	849	if (!strcmp(name, o->name) \|\|
	850	(o->alias && !strcmp(name, o->alias)))
	851	match = 1;
	852	else {
	853	unsigned int dist;
	854
	855	dist = string_distance(name, o->name);
	856	if (dist < best_dist) {
	857	best_dist = dist;
	858	closest = o;
	859	}
	860	}
	861	}
	862
	863	if (show_all \|\| match) {
	864	found = 1;
	865	if (match)
	866	printf("%20s: %s\n", o->name, o->help);
	867	if (show_all) {
	868	if (!o->parent)
	869	print_option(o);
	870	continue;
	871	}
	872	}
	873
	874	if (!match)
	875	continue;
	876
	877	show_option_help(o, stdout);
	878	}
	879
	880	if (found)
	881	return 0;
	882
	883	printf("No such command: %s", name);
	884	if (closest) {
	885	printf(" - showing closest match\n");
	886	printf("%20s: %s\n", closest->name, closest->help);
	887	show_option_help(closest, stdout);
	888	} else
	889	printf("\n");
	890
	891	return 1;
	892	}
	893
	894	/*
	895	* Handle parsing of default parameters.
	896	*/
	897	void fill_default_options(void data, struct fio_option options)
	898	{
	899	struct fio_option *o;
	900
	901	dprint(FD_PARSE, "filling default options\n");
	902
	903	for (o = &options[0]; o->name; o++)
	904	if (o->def)
	905	handle_option(o, o->def, data);
	906	}
	907
	908	void option_init(struct fio_option *o)
	909	{
	910	if (o->type == FIO_OPT_DEPRECATED)
	911	return;
	912	if (o->type == FIO_OPT_BOOL) {
	913	o->minval = 0;
	914	o->maxval = 1;
	915	}
	916	if (o->type == FIO_OPT_STR_SET && o->def) {
	917	fprintf(stderr, "Option %s: string set option with"
	918	" default will always be true\n", o->name);
	919	}
	920	if (!o->cb && (!o->off1 && !o->roff1)) {
	921	fprintf(stderr, "Option %s: neither cb nor offset given\n",
	922	o->name);
	923	}
	924	if (o->type == FIO_OPT_STR \|\| o->type == FIO_OPT_STR_STORE \|\|
	925	o->type == FIO_OPT_STR_MULTI)
	926	return;
	927	if (o->cb && ((o->off1 \|\| o->off2 \|\| o->off3 \|\| o->off4) \|\|
	928	(o->roff1 \|\| o->roff2 \|\| o->roff3 \|\| o->roff4))) {
	929	fprintf(stderr, "Option %s: both cb and offset given\n",
	930	o->name);
	931	}
	932	}
	933
	934	/*
	935	* Sanitize the options structure. For now it just sets min/max for bool
	936	* values and whether both callback and offsets are given.
	937	*/
	938	void options_init(struct fio_option *options)
	939	{
	940	struct fio_option *o;
	941
	942	dprint(FD_PARSE, "init options\n");
	943
	944	for (o = &options[0]; o->name; o++)
	945	option_init(o);
	946	}