X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=parse.c;h=8aaf7992754f1de3e42211a1e3b9c1ef05eddb06;hp=e09b1bbe42998655125d23b00c3b0b7d35214489;hb=184b4098cccb8392eb8ecdd23cdc6597b540df36;hpb=af52b3455ad892322aab2791282b6bd4efdfdbf3

diff --git a/parse.c b/parse.c
index e09b1bbe..8aaf7992 100644
--- a/parse.c
+++ b/parse.c
@@ -8,141 +8,311 @@
 #include <string.h>
 #include <errno.h>
 #include <limits.h>
+#include <stdlib.h>
+#include <math.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 void show_option_range(struct fio_option *o)
+static int vp_cmp(const void *p1, const void *p2)
 {
-	if (!o->minval && !o->maxval)
-		return;
+	const struct value_pair *vp1 = p1;
+	const struct value_pair *vp2 = p2;
 
-	printf("%20s: min=%d, max=%d\n", "range", o->minval, o->maxval);
+	return strlen(vp2->ival) - strlen(vp1->ival);
 }
 
-static void show_option_values(struct fio_option *o)
+static void posval_sort(struct fio_option *o, struct value_pair *vpmap)
 {
-	const char *msg;
-	int i = 0;
+	const struct value_pair *vp;
+	int entries;
 
-	do {
-		msg = o->posval[i].ival;
-		if (!msg)
+	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;
 
-		if (!i)
-			printf("%20s: ", "valid values");
+		memcpy(&vpmap[entries], vp, sizeof(*vp));
+	}
+
+	qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
+}
+
+static void show_option_range(struct fio_option *o,
+				int (*logger)(const char *format, ...))
+{
+	if (o->type == FIO_OPT_FLOAT_LIST){
+		if (isnan(o->minfp) && isnan(o->maxfp))
+			return;
+
+		logger("%20s: min=%f", "range", o->minfp);
+		if (!isnan(o->maxfp))
+			logger(", max=%f", o->maxfp);
+		logger("\n");
+	} else {
+		if (!o->minval && !o->maxval)
+			return;
 
-		printf("%s,", msg);
-		i++;
-	} while (i < PARSE_MAX_VP);
+		logger("%20s: min=%d", "range", o->minval);
+		if (o->maxval)
+			logger(", max=%d", o->maxval);
+		logger("\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;
+
+		log_info("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
+		if (vp->help)
+			log_info(" %s", vp->help);
+		log_info("\n");
+	}
 
 	if (i)
-		printf("\n");
+		log_info("\n");
+}
+
+static void show_option_help(struct fio_option *o, int is_err)
+{
+	const char *typehelp[] = {
+		"invalid",
+		"string (opt=bla)",
+		"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)",
+		"list of floating point values separated by ':' (opt=5.9:7.8)",
+		"no argument (opt)",
+		"deprecated",
+	};
+	int (*logger)(const char *format, ...);
+
+	if (is_err)
+		logger = log_err;
+	else
+		logger = log_info;
+
+	if (o->alias)
+		logger("%20s: %s\n", "alias", o->alias);
+
+	logger("%20s: %s\n", "type", typehelp[o->type]);
+	logger("%20s: %s\n", "default", o->def ? o->def : "no default");
+	if (o->prof_name)
+		logger("%20s: only for profile '%s'\n", "valid", o->prof_name);
+	show_option_range(o, logger);
+	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;
+	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)
+static unsigned long long __get_mult_bytes(const char *p, void *data,
+					   int *percent)
 {
-	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;
+	unsigned int kb_base = fio_get_kb_base(data);
+	unsigned long long ret = 1;
+	unsigned int i, pow = 0, mult = kb_base;
+	char *c;
+
+	if (!p)
+		return 1;
+
+	c = strdup(p);
+
+	for (i = 0; i < strlen(c); i++)
+		c[i] = tolower(c[i]);
+
+	if (!strcmp("pib", c)) {
+		pow = 5;
+		mult = 1000;
+	} else if (!strcmp("tib", c)) {
+		pow = 4;
+		mult = 1000;
+	} else if (!strcmp("gib", c)) {
+		pow = 3;
+		mult = 1000;
+	} else if (!strcmp("mib", c)) {
+		pow = 2;
+		mult = 1000;
+	} else if (!strcmp("kib", c)) {
+		pow = 1;
+		mult = 1000;
+	} else if (!strcmp("p", c) || !strcmp("pb", c))
+		pow = 5;
+	else if (!strcmp("t", c) || !strcmp("tb", c))
+		pow = 4;
+	else if (!strcmp("g", c) || !strcmp("gb", c))
+		pow = 3;
+	else if (!strcmp("m", c) || !strcmp("mb", c))
+		pow = 2;
+	else if (!strcmp("k", c) || !strcmp("kb", c))
+		pow = 1;
+	else if (!strcmp("%", c)) {
+		*percent = 1;
+		return ret;
+	}
+
+	while (pow--)
+		ret *= (unsigned long long) mult;
+
+	free(c);
+	return ret;
+}
+
+static unsigned long long get_mult_bytes(const char *str, int len, void *data,
+					 int *percent)
+{
+	const char *p = str;
+	int digit_seen = 0;
+
+	if (len < 2)
+		return __get_mult_bytes(str, data, percent);
+
+	/*
+	 * Go forward until we hit a non-digit, or +/- sign
+	 */
+	while ((p - str) <= len) {
+		if (!isdigit((int) *p) &&
+		    (((*p != '+') && (*p != '-')) || digit_seen))
+			break;
+		digit_seen |= isdigit((int) *p);
+		p++;
 	}
+
+	if (!isalpha((int) *p) && (*p != '%'))
+		p = NULL;
+
+	return __get_mult_bytes(p, data, percent);
+}
+
+/*
+ * Convert string into a floating number. Return 1 for success and 0 otherwise.
+ */
+int str_to_float(const char *str, double *val)
+{
+	return (1 == sscanf(str, "%lf", val));
 }
 
 /*
  * convert string into decimal value, noting any size suffix
  */
-static int str_to_decimal(const char *str, long long *val, int kilo)
+int str_to_decimal(const char *str, long long *val, int kilo, void *data)
 {
-	int len;
+	int len, base;
 
 	len = strlen(str);
 	if (!len)
 		return 1;
 
-	*val = strtoll(str, NULL, 10);
+	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
+	if (kilo) {
+		unsigned long long mult;
+		int perc = 0;
+
+		mult = get_mult_bytes(str, len, data, &perc);
+		if (perc)
+			*val = -1ULL - *val;
+		else
+			*val *= mult;
+	} else
 		*val *= get_mult_time(str[len - 1]);
 
 	return 0;
 }
 
-static int check_str_bytes(const char *p, long long *val)
+static int check_str_bytes(const char *p, long long *val, void *data)
 {
-	return str_to_decimal(p, val, 1);
+	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);
+	return str_to_decimal(p, val, 0, NULL);
 }
 
 void strip_blank_front(char **p)
 {
 	char *s = *p;
 
-	while (isspace(*s))
+	if (!strlen(s))
+		return;
+	while (isspace((int) *s))
 		s++;
+
+	*p = s;
 }
 
 void strip_blank_end(char *p)
 {
-	char *s = p + strlen(p) - 1;
+	char *start = p, *s;
 
-	while (isspace(*s) || iscntrl(*s))
+	if (!strlen(p))
+		return;
+
+	s = strchr(p, ';');
+	if (s)
+		*s = '\0';
+	s = strchr(p, '#');
+	if (s)
+		*s = '\0';
+	if (s)
+		p = s;
+
+	s = p + strlen(p);
+	while ((isspace((int) *s) || iscntrl((int) *s)) && (s > start))
 		s--;
 
 	*(s + 1) = '\0';
 }
 
-static int check_range_bytes(const char *str, long *val)
+static int check_range_bytes(const char *str, long *val, void *data)
 {
-	char suffix;
-
-	if (!strlen(str))
-		return 1;
+	long long __val;
 
-	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
-		*val *= get_mult_bytes(suffix);
+	if (!str_to_decimal(str, &__val, 1, data)) {
+		*val = __val;
 		return 0;
 	}
 
-	if (sscanf(str, "%lu", val) == 1)
-		return 0;
-
 	return 1;
 }
 
@@ -150,68 +320,89 @@ static int check_int(const char *p, int *val)
 {
 	if (!strlen(p))
 		return 1;
-	if (sscanf(p, "%u", val) == 1)
-		return 0;
+	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)
+static int opt_len(const char *str)
 {
-	struct fio_option *o;
+	char *postfix;
 
-	for (o = &options[0]; o->name; o++) {
-		if (!strcmp(o->name, opt))
-			return o;
-		else if (o->alias && !strcmp(o->alias, opt))
-			return o;
-	}
+	postfix = strchr(str, ':');
+	if (!postfix)
+		return strlen(str);
 
-	return NULL;
+	return (int)(postfix - str);
 }
 
-#define val_store(ptr, val, off, data)			\
+#define val_store(ptr, val, off, or, data)		\
 	do {						\
 		ptr = td_var((data), (off));		\
-		*ptr = (val);				\
+		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 first, int more, int curr)
 {
 	int il, *ilp;
+	double* flp;
 	long long ull, *ullp;
 	long ul1, ul2;
+	double uf;
 	char **cp;
 	int ret = 0, is_time = 0;
+	const struct value_pair *vp;
+	struct value_pair posval[PARSE_MAX_VP];
+	int i, all_skipped = 1;
+
+	dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
+							o->type, ptr);
 
-	if (!ptr && o->type != FIO_OPT_STR_SET) {
-		fprintf(stderr, "Option %s requires an argument\n", o->name);
+	if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
+		log_err("Option %s requires an argument\n", o->name);
 		return 1;
 	}
 
 	switch (o->type) {
-	case FIO_OPT_STR: {
+	case FIO_OPT_STR:
+	case FIO_OPT_STR_MULTI: {
 		fio_opt_str_fn *fn = o->cb;
-		const struct value_pair *vp;
-		int i;
 
+		posval_sort(o, posval);
+
+		ret = 1;
 		for (i = 0; i < PARSE_MAX_VP; i++) {
-			vp = &o->posval[i];
+			vp = &posval[i];
 			if (!vp->ival || vp->ival[0] == '\0')
-				break;
-			ret = 1;
-			if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
+				continue;
+			all_skipped = 0;
+			if (!strncmp(vp->ival, ptr, opt_len(ptr))) {
 				ret = 0;
-				if (!o->off1)
-					break;
-				val_store(ilp, vp->oval, o->off1, data);
-				break;
+				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)
+		if (ret && !all_skipped)
 			show_option_values(o);
 		else if (fn)
 			ret = fn(data, ptr);
@@ -219,56 +410,146 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 	}
 	case FIO_OPT_STR_VAL_TIME:
 		is_time = 1;
-	case FIO_OPT_STR_VAL:
-	case FIO_OPT_STR_VAL_INT: {
+	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);
+			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);
+			log_err("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);
+			log_err("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);
+			if (o->type == FIO_OPT_INT) {
+				if (first) {
+					if (o->roff1)
+						*(unsigned int *) o->roff1 = ull;
+					else
+						val_store(ilp, ull, o->off1, 0, data);
+				}
+				if (!more) {
+					if (o->roff2)
+						*(unsigned int *) o->roff2 = ull;
+					else if (o->off2)
+						val_store(ilp, ull, o->off2, 0, data);
+				}
 			} else {
-				if (first)
-					val_store(ullp, ull, o->off1, data);
-				if (!more && o->off2)
-					val_store(ullp, ull, o->off2, data);
+				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_FLOAT_LIST: {
+
+		if (first) {
+			ul2 = 1;
+			ilp = td_var(data, o->off2);
+			*ilp = ul2;
+		}
+		if (curr >= o->maxlen) {
+			log_err("the list exceeding max length %d\n",
+					o->maxlen);
+			return 1;
+		}
+		if(!str_to_float(ptr, &uf)){
+			log_err("not a floating point value: %s\n", ptr);
+			return 1;
+		}
+		if (!isnan(o->maxfp) && uf > o->maxfp) {
+			log_err("value out of range: %f"
+				" (range max: %f)\n", uf, o->maxfp);
+			return 1;
+		}
+		if (!isnan(o->minfp) && uf < o->minfp) {
+			log_err("value out of range: %f"
+				" (range min: %f)\n", uf, o->minfp);
+			return 1;
+		}
+
+		flp = td_var(data, o->off1);
+		flp[curr] = uf;
+
+		break;
+	}
 	case FIO_OPT_STR_STORE: {
 		fio_opt_str_fn *fn = o->cb;
 
-		cp = td_var(data, o->off1);
-		*cp = strdup(ptr);
-		if (fn) {
+		if (o->roff1 || o->off1) {
+			if (o->roff1)
+				cp = (char **) o->roff1;
+			else if (o->off1)
+				cp = td_var(data, o->off1);
+
+			*cp = strdup(ptr);
+		} else {
+			cp = NULL;
+		}
+
+		if (fn)
 			ret = fn(data, ptr);
-			if (ret) {
-				free(*cp);
-				*cp = NULL;
+		else if (o->posval[0].ival) {
+			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;
+				all_skipped = 0;
+				if (!strncmp(vp->ival, ptr, opt_len(ptr))) {
+					char *rest;
+
+					ret = 0;
+					if (vp->cb)
+						fn = vp->cb;
+					rest = strstr(*cp ?: ptr, ":");
+					if (rest) {
+						if (*cp)
+							*rest = '\0';
+						ptr = rest + 1;
+					} else
+						ptr = NULL;
+					break;
+				}
 			}
 		}
+
+		if (!all_skipped) {
+			if (ret && !*cp)
+				show_option_values(o);
+			else if (ret && *cp)
+				ret = 0;
+			else if (fn && ptr)
+				ret = fn(data, ptr);
+		}
+
 		break;
 	}
 	case FIO_OPT_RANGE: {
@@ -277,6 +558,11 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 
 		strncpy(tmp, ptr, sizeof(tmp) - 1);
 
+		/* Handle bsrange with separate read,write values: */
+		p1 = strchr(tmp, ',');
+		if (p1)
+			*p1 = '\0';
+
 		p1 = strchr(tmp, '-');
 		if (!p1) {
 			p1 = strchr(tmp, ':');
@@ -291,7 +577,8 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 		p1 = tmp;
 
 		ret = 1;
-		if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
+		if (!check_range_bytes(p1, &ul1, data) &&
+		    !check_range_bytes(p2, &ul2, data)) {
 			ret = 0;
 			if (ul1 > ul2) {
 				unsigned long foo = ul1;
@@ -301,31 +588,48 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 			}
 
 			if (first) {
-				val_store(ilp, ul1, o->off1, data);
-				val_store(ilp, ul2, o->off2, data);
+				if (o->roff1)
+					*(unsigned int *) o->roff1 = ul1;
+				else
+					val_store(ilp, ul1, o->off1, 0, data);
+				if (o->roff2)
+					*(unsigned int *) o->roff2 = ul2;
+				else
+					val_store(ilp, ul2, o->off2, 0, data);
 			}
-			if (!more && o->off3 && o->off4) {
-				val_store(ilp, ul1, o->off3, data);
-				val_store(ilp, ul2, o->off4, data);
+			if (o->roff3 && o->roff4) {
+				*(unsigned int *) o->roff3 = ul1;
+				*(unsigned int *) 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_INT:
-	case FIO_OPT_BOOL: {
+	case FIO_OPT_BOOL:
+	case FIO_OPT_STR_SET: {
 		fio_opt_int_fn *fn = o->cb;
 
-		ret = check_int(ptr, &il);
+		if (ptr)
+			ret = check_int(ptr, &il);
+		else if (o->type == FIO_OPT_BOOL)
+			ret = 1;
+		else
+			il = 1;
+
 		if (ret)
 			break;
 
 		if (o->maxval && il > (int) o->maxval) {
-			fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval);
+			log_err("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);
+			log_err("min value out of range: %d (%d min)\n",
+								il, o->minval);
 			return 1;
 		}
 
@@ -335,66 +639,157 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 		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);
+			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)
-				val_store(ilp, 1, o->off1, data);
-			if (!more && o->off2)
-				val_store(ilp, 1, o->off2, data);
-		}
+	case FIO_OPT_DEPRECATED:
+		log_info("Option %s is deprecated\n", o->name);
 		break;
-	}
 	default:
-		fprintf(stderr, "Bad option type %u\n", o->type);
+		log_err("Bad option type %u\n", o->type);
 		ret = 1;
 	}
 
+	if (ret)
+		return ret;
+
+	if (o->verify) {
+		ret = o->verify(o, data);
+		if (ret) {
+			log_err("Correct format for offending option\n");
+			log_err("%20s: %s\n", o->name, o->help);
+			show_option_help(o, 1);
+		}
+	}
+
 	return ret;
 }
 
-static int handle_option(struct fio_option *o, const char *ptr, void *data)
+static int handle_option(struct fio_option *o, const char *__ptr, void *data)
 {
-	const char *ptr2 = NULL;
-	int r1, r2;
+	char *o_ptr, *ptr, *ptr2;
+	int ret, done;
+
+	dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);
+
+	o_ptr = ptr = NULL;
+	if (__ptr)
+		o_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
+	 * See if we have another set of parameters, hidden after a comma.
+	 * Do this before parsing this 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)
+	done = 0;
+	ret = 1;
+	do {
+		int __ret;
+
+		ptr2 = NULL;
+		if (ptr &&
+		    (o->type != FIO_OPT_STR_STORE) &&
+		    (o->type != FIO_OPT_STR) &&
+		    (o->type != FIO_OPT_FLOAT_LIST)) {
+			ptr2 = strchr(ptr, ',');
+			if (ptr2 && *(ptr2 + 1) == '\0')
+				*ptr2 = '\0';
+			if (o->type != FIO_OPT_STR_MULTI) {
+				if (!ptr2)
+					ptr2 = strchr(ptr, ':');
+				if (!ptr2)
+					ptr2 = strchr(ptr, '-');
+			}
+		} else if (ptr && o->type == FIO_OPT_FLOAT_LIST) {
 			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.
+		 */
+		__ret = __handle_option(o, ptr, data, !done, !!ptr2, done);
+		if (ret)
+			ret = __ret;
+
+		if (!ptr2)
+			break;
+
+		ptr = ptr2 + 1;
+		done++;
+	} while (1);
+
+	if (o_ptr)
+		free(o_ptr);
+	return ret;
+}
+
+static struct fio_option *get_option(char *opt,
+				     struct fio_option *options, char **post)
+{
+	struct fio_option *o;
+	char *ret;
+
+	ret = strchr(opt, '=');
+	if (ret) {
+		*post = ret;
+		*ret = '\0';
+		ret = opt;
+		(*post)++;
+		strip_blank_end(ret);
+		o = find_option(options, ret);
+	} else {
+		o = find_option(options, opt);
+		*post = NULL;
 	}
 
-	/*
-	 * 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);
+	return o;
+}
 
-	if (!ptr2)
-		return r1;
+static int opt_cmp(const void *p1, const void *p2)
+{
+	struct fio_option *o;
+	char *s, *foo;
+	int prio1, prio2;
 
-	ptr2++;
-	r2 = __handle_option(o, ptr2, data, 0, 0);
+	prio1 = prio2 = 0;
 
-	return r1 && r2;
+	if (*(char **)p1) {
+		s = strdup(*((char **) p1));
+		o = get_option(s, fio_options, &foo);
+		if (o)
+			prio1 = o->prio;
+		free(s);
+	}
+	if (*(char **)p2) {
+		s = strdup(*((char **) p2));
+		o = get_option(s, fio_options, &foo);
+		if (o)
+			prio2 = o->prio;
+		free(s);
+	}
+
+	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,
@@ -404,46 +799,44 @@ int parse_cmd_option(const char *opt, const char *val,
 
 	o = find_option(options, opt);
 	if (!o) {
-		fprintf(stderr, "Bad option %s\n", opt);
+		log_err("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);
+	log_err("fio: failed parsing %s=%s\n", opt, val);
 	return 1;
 }
 
-int parse_option(const char *opt, struct fio_option *options, void *data)
+int parse_option(char *opt, const char *input,
+		 struct fio_option *options, struct fio_option **o, 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;
+	char *post;
+
+	if (!opt) {
+		log_err("fio: failed parsing %s\n", input);
+		*o = NULL;
+		return 1;
 	}
 
-	if (!o) {
-		fprintf(stderr, "Bad option %s\n", tmp);
+	*o = get_option(opt, options, &post);
+	if (!*o) {
+		if (post) {
+			int len = strlen(opt);
+			if (opt + len + 1 != post)
+				memmove(opt + len + 1, post, strlen(post));
+			opt[len] = '=';
+		}
 		return 1;
 	}
 
-	if (!handle_option(o, post, data))
+	if (!handle_option(*o, post, data)) {
 		return 0;
+	}
 
-	fprintf(stderr, "fio: failed parsing %s\n", opt);
+	log_err("fio: failed parsing %s\n", input);
 	return 1;
 }
 
@@ -486,30 +879,67 @@ static int string_distance(const char *s1, const char *s2)
 	return i;
 }
 
-static void show_option_help(struct fio_option *o)
+static struct fio_option *find_child(struct fio_option *options,
+				     struct fio_option *o)
 {
-	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;
 
-	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);
+	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);
+
+	log_info("%-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;
+	unsigned int best_dist = -1U;
 	int found = 0;
 	int show_all = 0;
 
@@ -521,8 +951,14 @@ int show_cmd_help(struct fio_option *options, const char *name)
 	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))
+			if (!strcmp(name, o->name) ||
+			    (o->alias && !strcmp(name, o->alias)))
 				match = 1;
 			else {
 				unsigned int dist;
@@ -537,27 +973,36 @@ int show_cmd_help(struct fio_option *options, const char *name)
 
 		if (show_all || match) {
 			found = 1;
-			printf("%20s: %s\n", o->name, o->help);
-			if (show_all)
+			if (match)
+				log_info("%20s: %s\n", o->name, o->help);
+			if (show_all) {
+				if (!o->parent)
+					print_option(o);
 				continue;
+			}
 		}
 
 		if (!match)
 			continue;
 
-		show_option_help(o);
+		show_option_help(o, 0);
 	}
 
 	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);
+	log_err("No such command: %s", name);
+
+	/*
+	 * Only print an appropriately close option, one where the edit
+	 * distance isn't too big. Otherwise we get crazy matches.
+	 */
+	if (closest && best_dist < 3) {
+		log_info(" - showing closest match\n");
+		log_info("%20s: %s\n", closest->name, closest->help);
+		show_option_help(closest, 0);
 	} else
-		printf("\n");
+		log_info("\n");
 
 	return 1;
 }
@@ -569,11 +1014,40 @@ 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_FLOAT_LIST) {
+		o->minfp = NAN;
+		o->maxfp = NAN;
+	}
+	if (o->type == FIO_OPT_STR_SET && o->def) {
+		log_err("Option %s: string set option with"
+				" default will always be true\n", o->name);
+	}
+	if (!o->cb && (!o->off1 && !o->roff1))
+		log_err("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))) {
+		log_err("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.
@@ -582,16 +1056,27 @@ 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);
+}
+
+void options_free(struct fio_option *options, void *data)
+{
+	struct fio_option *o;
+	char **ptr;
+
+	dprint(FD_PARSE, "free options\n");
+
 	for (o = &options[0]; o->name; o++) {
-		if (o->type == FIO_OPT_BOOL) {
-			o->minval = 0;
-			o->maxval = 1;
-		}
-		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)
+		if (o->type != FIO_OPT_STR_STORE || !o->off1)
 			continue;
-		if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4))
-			fprintf(stderr, "Option %s: both cb and offset given\n", o->name);
+
+		ptr = td_var(data, o->off1);
+		if (*ptr) {
+			free(*ptr);
+			*ptr = NULL;
+		}
 	}
 }