X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=parse.c;h=ecce8b89dba99f5bd8af7120d10a2843fac056cf;hp=f3497440aade02ca875dc7c0f9e07469c4030595;hb=e6fe02651641fc64d2fa4fcfe9b1013b2947d11b;hpb=836fcc0fceb233ebcc41ee63b4ea5cae20b678a4

diff --git a/parse.c b/parse.c
index f3497440..ecce8b89 100644
--- a/parse.c
+++ b/parse.c
@@ -10,11 +10,19 @@
 #include <limits.h>
 #include <stdlib.h>
 #include <math.h>
+#include <float.h>
 
 #include "parse.h"
 #include "debug.h"
 #include "options.h"
+#include "optgroup.h"
 #include "minmax.h"
+#include "lib/ieee754.h"
+#include "lib/pow2.h"
+
+#ifdef CONFIG_ARITHMETIC
+#include "y.tab.h"
+#endif
 
 static struct fio_option *__fio_options;
 
@@ -45,17 +53,17 @@ static void posval_sort(struct fio_option *o, struct value_pair *vpmap)
 }
 
 static void show_option_range(struct fio_option *o,
-				int (*logger)(const char *format, ...))
+			      size_t (*logger)(const char *format, ...))
 {
 	if (o->type == FIO_OPT_FLOAT_LIST) {
-		if (isnan(o->minfp) && isnan(o->maxfp))
+		if (o->minfp == DBL_MIN && o->maxfp == DBL_MAX)
 			return;
 
 		logger("%20s: min=%f", "range", o->minfp);
-		if (!isnan(o->maxfp))
+		if (o->maxfp != DBL_MAX)
 			logger(", max=%f", o->maxfp);
 		logger("\n");
-	} else {
+	} else if (!o->posval[0].ival) {
 		if (!o->minval && !o->maxval)
 			return;
 
@@ -101,8 +109,9 @@ static void show_option_help(struct fio_option *o, int is_err)
 		"list of floating point values separated by ':' (opt=5.9:7.8)",
 		"no argument (opt)",
 		"deprecated",
+		"unsupported",
 	};
-	int (*logger)(const char *format, ...);
+	size_t (*logger)(const char *format, ...);
 
 	if (is_err)
 		logger = log_err;
@@ -120,20 +129,61 @@ static void show_option_help(struct fio_option *o, int is_err)
 	show_option_values(o);
 }
 
-static unsigned long get_mult_time(char c)
+static unsigned long long get_mult_time(const char *str, int len,
+					int is_seconds)
+{
+	const char *p = str;
+	char *c;
+	unsigned long long mult = 1;
+	int i;
+
+	/*
+         * Go forward until we hit a non-digit, or +/- sign
+         */
+	while ((p - str) <= len) {
+		if (!isdigit((int) *p) && (*p != '+') && (*p != '-'))
+			break;
+		p++;
+	}
+
+	if (!isalpha((int) *p)) {
+		if (is_seconds)
+			return 1000000UL;
+		else
+			return 1;
+	}
+
+	c = strdup(p);
+	for (i = 0; i < strlen(c); i++)
+		c[i] = tolower(c[i]);
+
+	if (!strncmp("us", c, 2) || !strncmp("usec", c, 4))
+		mult = 1;
+	else if (!strncmp("ms", c, 2) || !strncmp("msec", c, 4))
+		mult = 1000;
+	else if (!strcmp("s", c))
+		mult = 1000000;
+	else if (!strcmp("m", c))
+		mult = 60 * 1000000UL;
+	else if (!strcmp("h", c))
+		mult = 60 * 60 * 1000000UL;
+	else if (!strcmp("d", c))
+		mult = 24 * 60 * 60 * 1000000ULL;
+
+	free(c);
+	return mult;
+}
+
+static int is_separator(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:
+	case ':':
+	case '-':
+	case ',':
+	case '/':
 		return 1;
+	default:
+		return 0;
 	}
 }
 
@@ -150,35 +200,58 @@ static unsigned long long __get_mult_bytes(const char *p, void *data,
 
 	c = strdup(p);
 
-	for (i = 0; i < strlen(c); i++)
+	for (i = 0; i < strlen(c); i++) {
 		c[i] = tolower(c[i]);
+		if (is_separator(c[i])) {
+			c[i] = '\0';
+			break;
+		}
+	}
 
+	/* If kb_base is 1000, use true units.
+	 * If kb_base is 1024, use opposite units.
+	 */
 	if (!strncmp("pib", c, 3)) {
 		pow = 5;
-		mult = 1000;
+		if (kb_base == 1000)
+			mult = 1024;
+		else if (kb_base == 1024)
+			mult = 1000;
 	} else if (!strncmp("tib", c, 3)) {
 		pow = 4;
-		mult = 1000;
+		if (kb_base == 1000)
+			mult = 1024;
+		else if (kb_base == 1024)
+			mult = 1000;
 	} else if (!strncmp("gib", c, 3)) {
 		pow = 3;
-		mult = 1000;
+		if (kb_base == 1000)
+			mult = 1024;
+		else if (kb_base == 1024)
+			mult = 1000;
 	} else if (!strncmp("mib", c, 3)) {
 		pow = 2;
-		mult = 1000;
+		if (kb_base == 1000)
+			mult = 1024;
+		else if (kb_base == 1024)
+			mult = 1000;
 	} else if (!strncmp("kib", c, 3)) {
 		pow = 1;
-		mult = 1000;
-	} else if (!strncmp("p", c, 1) || !strncmp("pb", c, 2))
+		if (kb_base == 1000)
+			mult = 1024;
+		else if (kb_base == 1024)
+			mult = 1000;
+	} else if (!strncmp("p", c, 1) || !strncmp("pb", c, 2)) {
 		pow = 5;
-	else if (!strncmp("t", c, 1) || !strncmp("tb", c, 2))
+	} else if (!strncmp("t", c, 1) || !strncmp("tb", c, 2)) {
 		pow = 4;
-	else if (!strncmp("g", c, 1) || !strncmp("gb", c, 2))
+	} else if (!strncmp("g", c, 1) || !strncmp("gb", c, 2)) {
 		pow = 3;
-	else if (!strncmp("m", c, 1) || !strncmp("mb", c, 2))
+	} else if (!strncmp("m", c, 1) || !strncmp("mb", c, 2)) {
 		pow = 2;
-	else if (!strncmp("k", c, 1) || !strncmp("kb", c, 2))
+	} else if (!strncmp("k", c, 1) || !strncmp("kb", c, 2)) {
 		pow = 1;
-	else if (!strncmp("%", c, 1)) {
+	} else if (!strncmp("%", c, 1)) {
 		*percent = 1;
 		free(c);
 		return ret;
@@ -217,33 +290,72 @@ static unsigned long long get_mult_bytes(const char *str, int len, void *data,
 	return __get_mult_bytes(p, data, percent);
 }
 
+extern int evaluate_arithmetic_expression(const char *buffer, long long *ival,
+					  double *dval, double implied_units,
+					  int is_time);
+
 /*
  * Convert string into a floating number. Return 1 for success and 0 otherwise.
  */
-int str_to_float(const char *str, double *val)
+int str_to_float(const char *str, double *val, int is_time)
 {
-	return (1 == sscanf(str, "%lf", val));
+#ifdef CONFIG_ARITHMETIC
+	int rc;
+	long long ival;
+	double dval;
+
+	if (str[0] == '(') {
+		rc = evaluate_arithmetic_expression(str, &ival, &dval, 1.0, is_time);
+		if (!rc) {
+			*val = dval;
+			return 1;
+		}
+	}
+#endif
+	return 1 == sscanf(str, "%lf", val);
 }
 
 /*
  * convert string into decimal value, noting any size suffix
  */
-int str_to_decimal(const char *str, long long *val, int kilo, void *data)
+int str_to_decimal(const char *str, long long *val, int kilo, void *data,
+		   int is_seconds, int is_time)
 {
 	int len, base;
+	int rc = 1;
+#ifdef CONFIG_ARITHMETIC
+	long long ival;
+	double dval;
+	double implied_units = 1.0;
+#endif
 
 	len = strlen(str);
 	if (!len)
 		return 1;
 
-	if (strstr(str, "0x") || strstr(str, "0X"))
-		base = 16;
-	else
-		base = 10;
+#ifdef CONFIG_ARITHMETIC
+	if (is_seconds)
+		implied_units = 1000000.0;
+	if (str[0] == '(')
+		rc = evaluate_arithmetic_expression(str, &ival, &dval, implied_units, is_time);
+	if (str[0] == '(' && !rc) {
+		if (!kilo && is_seconds)
+			*val = ival / 1000000LL;
+		else
+			*val = ival;
+	}
+#endif
 
-	*val = strtoll(str, NULL, base);
-	if (*val == LONG_MAX && errno == ERANGE)
-		return 1;
+	if (rc == 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) {
 		unsigned long long mult;
@@ -255,19 +367,19 @@ int str_to_decimal(const char *str, long long *val, int kilo, void *data)
 		else
 			*val *= mult;
 	} else
-		*val *= get_mult_time(str[len - 1]);
+		*val *= get_mult_time(str, len, is_seconds);
 
 	return 0;
 }
 
 int check_str_bytes(const char *p, long long *val, void *data)
 {
-	return str_to_decimal(p, val, 1, data);
+	return str_to_decimal(p, val, 1, data, 0, 0);
 }
 
-static int check_str_time(const char *p, long long *val)
+int check_str_time(const char *p, long long *val, int is_seconds)
 {
-	return str_to_decimal(p, val, 0, NULL);
+	return str_to_decimal(p, val, 0, NULL, is_seconds, 1);
 }
 
 void strip_blank_front(char **p)
@@ -309,7 +421,7 @@ static int check_range_bytes(const char *str, long *val, void *data)
 {
 	long long __val;
 
-	if (!str_to_decimal(str, &__val, 1, data)) {
+	if (!str_to_decimal(str, &__val, 1, data, 0, 0)) {
 		*val = __val;
 		return 0;
 	}
@@ -332,7 +444,7 @@ static int check_int(const char *p, int *val)
 	return 1;
 }
 
-static int opt_len(const char *str)
+static size_t opt_len(const char *str)
 {
 	char *postfix;
 
@@ -348,9 +460,9 @@ static int str_match_len(const struct value_pair *vp, const char *str)
 	return max(strlen(vp->ival), opt_len(str));
 }
 
-#define val_store(ptr, val, off, or, data)		\
+#define val_store(ptr, val, off, or, data, o)		\
 	do {						\
-		ptr = td_var((data), (off));		\
+		ptr = td_var((data), (o), (off));	\
 		if ((or))				\
 			*ptr |= (val);			\
 		else					\
@@ -360,8 +472,8 @@ static int str_match_len(const struct value_pair *vp, const char *str)
 static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 			   int first, int more, int curr)
 {
-	int il, *ilp;
-	double *flp;
+	int il=0, *ilp;
+	fio_fp64_t *flp;
 	long long ull, *ullp;
 	long ul1, ul2;
 	double uf;
@@ -392,18 +504,12 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 			if (!vp->ival || vp->ival[0] == '\0')
 				continue;
 			all_skipped = 0;
+			if (!ptr)
+				break;
 			if (!strncmp(vp->ival, ptr, str_match_len(vp, ptr))) {
 				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);
-				}
+				if (o->off1)
+					val_store(ilp, vp->oval, o->off1, vp->orval, data, o);
 				continue;
 			}
 		}
@@ -421,18 +527,28 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 		fio_opt_str_val_fn *fn = o->cb;
 		char tmp[128], *p;
 
+		if (!is_time && o->is_time)
+			is_time = o->is_time;
+
+		tmp[sizeof(tmp) - 1] = '\0';
 		strncpy(tmp, ptr, sizeof(tmp) - 1);
 		p = strchr(tmp, ',');
 		if (p)
 			*p = '\0';
 
 		if (is_time)
-			ret = check_str_time(tmp, &ull);
+			ret = check_str_time(tmp, &ull, o->is_seconds);
 		else
 			ret = check_str_bytes(tmp, &ull, data);
 
+		dprint(FD_PARSE, "  ret=%d, out=%llu\n", ret, ull);
+
 		if (ret)
 			break;
+		if (o->pow2 && !is_power_of_2(ull)) {
+			log_err("%s: must be a power-of-2\n", o->name);
+			return 1;
+		}
 
 		if (o->maxval && ull > o->maxval) {
 			log_err("max value out of range: %llu"
@@ -444,101 +560,133 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 					" (%u min)\n", ull, o->minval);
 			return 1;
 		}
+		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;
+				if (vp->oval == ull) {
+					ret = 0;
+					break;
+				}
+			}
+			if (ret) {
+				log_err("fio: value %llu not allowed:\n", ull);
+				show_option_values(o);
+				return 1;
+			}
+		}
 
 		if (fn)
 			ret = fn(data, &ull);
 		else {
 			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 (first)
+					val_store(ilp, ull, o->off1, 0, data, o);
 				if (curr == 1) {
-					if (o->roff2)
-						*(unsigned int *) o->roff2 = ull;
-					else if (o->off2)
-						val_store(ilp, ull, o->off2, 0, data);
+					if (o->off2)
+						val_store(ilp, ull, o->off2, 0, data, o);
 				}
 				if (curr == 2) {
-					if (o->roff3)
-						*(unsigned int *) o->roff3 = ull;
-					else if (o->off3)
-						val_store(ilp, ull, o->off3, 0, data);
+					if (o->off3)
+						val_store(ilp, ull, o->off3, 0, data, o);
 				}
 				if (!more) {
 					if (curr < 1) {
-						if (o->roff2)
-							*(unsigned int *) o->roff2 = ull;
-						else if (o->off2)
-							val_store(ilp, ull, o->off2, 0, data);
+						if (o->off2)
+							val_store(ilp, ull, o->off2, 0, data, o);
 					}
 					if (curr < 2) {
-						if (o->roff3)
-							*(unsigned int *) o->roff3 = ull;
-						else if (o->off3)
-							val_store(ilp, ull, o->off3, 0, data);
+						if (o->off3)
+							val_store(ilp, ull, o->off3, 0, data, o);
 					}
 				}
 			} else {
-				if (first) {
-					if (o->roff1)
-						*(unsigned long long *) o->roff1 = ull;
-					else
-						val_store(ullp, ull, o->off1, 0, data);
-				}
+				if (first)
+					val_store(ullp, ull, o->off1, 0, data, o);
 				if (!more) {
-					if (o->roff2)
-						*(unsigned long long *) o->roff2 =  ull;
-					else if (o->off2)
-						val_store(ullp, ull, o->off2, 0, data);
+					if (o->off2)
+						val_store(ullp, ull, o->off2, 0, data, o);
 				}
 			}
 		}
 		break;
 	}
 	case FIO_OPT_FLOAT_LIST: {
+		char *cp2;
 
 		if (first) {
-			ul2 = 1;
-			ilp = td_var(data, o->off2);
-			*ilp = ul2;
+			/*
+			** Initialize precision to 0 and zero out list
+			** in case specified list is shorter than default
+			*/
+			if (o->off2) {
+				ul2 = 0;
+				ilp = td_var(data, o, o->off2);
+				*ilp = ul2;
+			}
+
+			flp = td_var(data, o, o->off1);
+			for(i = 0; i < o->maxlen; i++)
+				flp[i].u.f = 0.0;
 		}
 		if (curr >= o->maxlen) {
 			log_err("the list exceeding max length %d\n",
 					o->maxlen);
 			return 1;
 		}
-		if (!str_to_float(ptr, &uf)) {
+		if (!str_to_float(ptr, &uf, 0)) { /* this breaks if we ever have lists of times */
 			log_err("not a floating point value: %s\n", ptr);
 			return 1;
 		}
-		if (!isnan(o->maxfp) && uf > o->maxfp) {
+		if (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) {
+		if (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;
+		flp = td_var(data, o, o->off1);
+		flp[curr].u.f = uf;
+
+		dprint(FD_PARSE, "  out=%f\n", uf);
+
+		/*
+		** Calculate precision for output by counting
+		** number of digits after period. Find first
+		** period in entire remaining list each time
+		*/
+		cp2 = strchr(ptr, '.');
+		if (cp2 != NULL) {
+			int len = 0;
+
+			while (*++cp2 != '\0' && *cp2 >= '0' && *cp2 <= '9')
+				len++;
+
+			if (o->off2) {
+				ilp = td_var(data, o, o->off2);
+				if (len > *ilp)
+					*ilp = len;
+			}
+		}
 
 		break;
 	}
 	case FIO_OPT_STR_STORE: {
 		fio_opt_str_fn *fn = o->cb;
 
-		if (o->roff1 || o->off1) {
-			if (o->roff1)
-				cp = (char **) o->roff1;
-			else if (o->off1)
-				cp = td_var(data, o->off1);
+		if (!strlen(ptr))
+			return 1;
 
+		if (o->off1) {
+			cp = td_var(data, o, o->off1);
 			*cp = strdup(ptr);
 		}
 
@@ -550,7 +698,7 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 			ret = 1;
 			for (i = 0; i < PARSE_MAX_VP; i++) {
 				vp = &posval[i];
-				if (!vp->ival || vp->ival[0] == '\0')
+				if (!vp->ival || vp->ival[0] == '\0' || !cp)
 					continue;
 				all_skipped = 0;
 				if (!strncmp(vp->ival, ptr, str_match_len(vp, ptr))) {
@@ -586,6 +734,7 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 		char tmp[128];
 		char *p1, *p2;
 
+		tmp[sizeof(tmp) - 1] = '\0';
 		strncpy(tmp, ptr, sizeof(tmp) - 1);
 
 		/* Handle bsrange with separate read,write values: */
@@ -618,50 +767,32 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 			}
 
 			if (first) {
-				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);
+				val_store(ilp, ul1, o->off1, 0, data, o);
+				val_store(ilp, ul2, o->off2, 0, data, o);
 			}
 			if (curr == 1) {
-				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);
+				if (o->off3 && o->off4) {
+					val_store(ilp, ul1, o->off3, 0, data, o);
+					val_store(ilp, ul2, o->off4, 0, data, o);
 				}
 			}
 			if (curr == 2) {
-				if (o->roff5 && o->roff6) {
-					*(unsigned int *) o->roff5 = ul1;
-					*(unsigned int *) o->roff6 = ul2;
-				} else if (o->off5 && o->off6) {
-					val_store(ilp, ul1, o->off5, 0, data);
-					val_store(ilp, ul2, o->off6, 0, data);
+				if (o->off5 && o->off6) {
+					val_store(ilp, ul1, o->off5, 0, data, o);
+					val_store(ilp, ul2, o->off6, 0, data, o);
 				}
 			}
 			if (!more) {
 				if (curr < 1) {
-					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);
+					if (o->off3 && o->off4) {
+						val_store(ilp, ul1, o->off3, 0, data, o);
+						val_store(ilp, ul2, o->off4, 0, data, o);
 					}
 				}
 				if (curr < 2) {
-					if (o->roff5 && o->roff6) {
-						*(unsigned int *) o->roff5 = ul1;
-						*(unsigned int *) o->roff6 = ul2;
-					} else if (o->off5 && o->off6) {
-						val_store(ilp, ul1, o->off5, 0, data);
-						val_store(ilp, ul2, o->off6, 0, data);
+					if (o->off5 && o->off6) {
+						val_store(ilp, ul1, o->off5, 0, data, o);
+						val_store(ilp, ul2, o->off6, 0, data, o);
 					}
 				}
 			}
@@ -680,6 +811,8 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 		else
 			il = 1;
 
+		dprint(FD_PARSE, "  ret=%d, out=%d\n", ret, il);
+
 		if (ret)
 			break;
 
@@ -700,23 +833,18 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 		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 (first)
+				val_store(ilp, il, o->off1, 0, data, o);
 			if (!more) {
-				if (o->roff2)
-					*(unsigned int *) o->roff2 = il;
-				else if (o->off2)
-					val_store(ilp, il, o->off2, 0, data);
+				if (o->off2)
+					val_store(ilp, il, o->off2, 0, data, o);
 			}
 		}
 		break;
 	}
 	case FIO_OPT_DEPRECATED:
 		log_info("Option %s is deprecated\n", o->name);
+		ret = 1;
 		break;
 	default:
 		log_err("Bad option type %u\n", o->type);
@@ -798,6 +926,25 @@ static int handle_option(struct fio_option *o, const char *__ptr, void *data)
 	return ret;
 }
 
+struct fio_option *find_option(struct fio_option *options, const char *opt)
+{
+	struct fio_option *o;
+
+	for (o = &options[0]; o->name; o++) {
+		if (!o_match(o, opt))
+			continue;
+		if (o->type == FIO_OPT_UNSUPPORTED) {
+			log_err("Option <%s>: %s\n", o->name, o->help);
+			continue;
+		}
+
+		return o;
+	}
+
+	return NULL;
+}
+
+
 static struct fio_option *get_option(char *opt,
 				     struct fio_option *options, char **post)
 {
@@ -853,8 +1000,27 @@ void sort_options(char **opts, struct fio_option *options, int num_opts)
 	__fio_options = NULL;
 }
 
+static void add_to_dump_list(struct fio_option *o, struct flist_head *dump_list,
+			     const char *post)
+{
+	struct print_option *p;
+
+	if (!dump_list)
+		return;
+
+	p = malloc(sizeof(*p));
+	p->name = strdup(o->name);
+	if (post)
+		p->value = strdup(post);
+	else
+		p->value = NULL;
+
+	flist_add_tail(&p->list, dump_list);
+}
+
 int parse_cmd_option(const char *opt, const char *val,
-		     struct fio_option *options, void *data)
+		     struct fio_option *options, void *data,
+		     struct flist_head *dump_list)
 {
 	struct fio_option *o;
 
@@ -864,15 +1030,18 @@ int parse_cmd_option(const char *opt, const char *val,
 		return 1;
 	}
 
-	if (!handle_option(o, val, data))
-		return 0;
+	if (handle_option(o, val, data)) {
+		log_err("fio: failed parsing %s=%s\n", opt, val);
+		return 1;
+	}
 
-	log_err("fio: failed parsing %s=%s\n", opt, val);
-	return 1;
+	add_to_dump_list(o, dump_list, val);
+	return 0;
 }
 
 int parse_option(char *opt, const char *input,
-		 struct fio_option *options, struct fio_option **o, void *data)
+		 struct fio_option *options, struct fio_option **o, void *data,
+		 struct flist_head *dump_list)
 {
 	char *post;
 
@@ -893,18 +1062,20 @@ int parse_option(char *opt, const char *input,
 		return 1;
 	}
 
-	if (!handle_option(*o, post, data))
-		return 0;
+	if (handle_option(*o, post, data)) {
+		log_err("fio: failed parsing %s\n", input);
+		return 1;
+	}
 
-	log_err("fio: failed parsing %s\n", input);
-	return 1;
+	add_to_dump_list(*o, dump_list, post);
+	return 0;
 }
 
 /*
  * Option match, levenshtein distance. Handy for not quite remembering what
  * the option name is.
  */
-static int string_distance(const char *s1, const char *s2)
+int string_distance(const char *s1, const char *s2)
 {
 	unsigned int s1_len = strlen(s1);
 	unsigned int s2_len = strlen(s2);
@@ -922,11 +1093,13 @@ static int string_distance(const char *s1, const char *s2)
 		q[0] = p[0] + 1;
 		for (j = 1; j <= s2_len; j++) {
 			unsigned int sub = p[j - 1];
+			unsigned int pmin;
 
 			if (s1[i - 1] != s2[j - 1])
 				sub++;
 
-			q[j] = min(p[j] + 1, min(q[j - 1] + 1, sub));
+			pmin = min(q[j - 1] + 1, sub);
+			q[j] = min(p[j] + 1, pmin);
 		}
 		r = p;
 		p = q;
@@ -939,6 +1112,19 @@ static int string_distance(const char *s1, const char *s2)
 	return i;
 }
 
+/*
+ * Make a guess of whether the distance from 's1' is significant enough
+ * to warrant printing the guess. We set this to a 1/2 match.
+ */
+int string_distance_ok(const char *opt, int distance)
+{
+	size_t len;
+
+	len = strlen(opt);
+	len = (len + 1) / 2;
+	return distance <= len;
+}
+
 static struct fio_option *find_child(struct fio_option *options,
 				     struct fio_option *o)
 {
@@ -1015,6 +1201,8 @@ int show_cmd_help(struct fio_option *options, const char *name)
 			continue;
 		if (!exec_profile && o->prof_name)
 			continue;
+		if (exec_profile && !(o->prof_name && !strcmp(exec_profile, o->prof_name)))
+			continue;
 
 		if (name) {
 			if (!strcmp(name, o->name) ||
@@ -1081,10 +1269,12 @@ void fill_default_options(void *data, struct fio_option *options)
 			handle_option(o, o->def, data);
 }
 
-void option_init(struct fio_option *o)
+static void option_init(struct fio_option *o)
 {
-	if (o->type == FIO_OPT_DEPRECATED)
+	if (o->type == FIO_OPT_DEPRECATED || o->type == FIO_OPT_UNSUPPORTED)
 		return;
+	if (o->name && !o->lname)
+		log_err("Option %s: missing long option name\n", o->name);
 	if (o->type == FIO_OPT_BOOL) {
 		o->minval = 0;
 		o->maxval = 1;
@@ -1094,26 +1284,23 @@ void option_init(struct fio_option *o)
 			o->maxval = UINT_MAX;
 	}
 	if (o->type == FIO_OPT_FLOAT_LIST) {
-		o->minfp = NAN;
-		o->maxfp = NAN;
+		o->minfp = DBL_MIN;
+		o->maxfp = DBL_MAX;
 	}
-	if (o->type == FIO_OPT_STR_SET && o->def) {
+	if (o->type == FIO_OPT_STR_SET && o->def && !o->no_warn_def) {
 		log_err("Option %s: string set option with"
 				" default will always be true\n", o->name);
 	}
-	if (!o->cb && (!o->off1 && !o->roff1))
+	if (!o->cb && !o->off1)
 		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);
-	}
 	if (!o->category) {
-		log_info("Options %s: no category defined. Setting to misc\n", o->name);
+		log_info("Option %s: no category defined. Setting to misc\n", o->name);
 		o->category = FIO_OPT_C_GENERAL;
+		o->group = FIO_OPT_G_INVALID;
 	}
+	if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE ||
+	    o->type == FIO_OPT_STR_MULTI)
+		return;
 }
 
 /*
@@ -1133,6 +1320,23 @@ void options_init(struct fio_option *options)
 	}
 }
 
+void options_mem_dupe(struct fio_option *options, void *data)
+{
+	struct fio_option *o;
+	char **ptr;
+
+	dprint(FD_PARSE, "dup options\n");
+
+	for (o = &options[0]; o->name; o++) {
+		if (o->type != FIO_OPT_STR_STORE)
+			continue;
+
+		ptr = td_var(data, o, o->off1);
+		if (*ptr)
+			*ptr = strdup(*ptr);
+	}
+}
+
 void options_free(struct fio_option *options, void *data)
 {
 	struct fio_option *o;
@@ -1141,10 +1345,10 @@ void options_free(struct fio_option *options, void *data)
 	dprint(FD_PARSE, "free options\n");
 
 	for (o = &options[0]; o->name; o++) {
-		if (o->type != FIO_OPT_STR_STORE || !o->off1)
+		if (o->type != FIO_OPT_STR_STORE || !o->off1 || o->no_free)
 			continue;
 
-		ptr = td_var(data, o->off1);
+		ptr = td_var(data, o, o->off1);
 		if (*ptr) {
 			free(*ptr);
 			*ptr = NULL;