add __load_ioengine() to separate ioengine loading from td context
[fio.git] / parse.c
diff --git a/parse.c b/parse.c
index 144794aa09b34d903e2e44969ba788adc70de25f..ecce8b89dba99f5bd8af7120d10a2843fac056cf 100644 (file)
--- a/parse.c
+++ b/parse.c
 #include <limits.h>
 #include <stdlib.h>
 #include <math.h>
-#include <values.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"
 
-static struct fio_option *fio_options;
-extern unsigned int fio_get_kb_base(void *);
+#ifdef CONFIG_ARITHMETIC
+#include "y.tab.h"
+#endif
+
+static struct fio_option *__fio_options;
 
 static int vp_cmp(const void *p1, const void *p2)
 {
@@ -48,17 +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 (o->minfp == MINDOUBLE && o->maxfp == MAXDOUBLE)
+       if (o->type == FIO_OPT_FLOAT_LIST) {
+               if (o->minfp == DBL_MIN && o->maxfp == DBL_MAX)
                        return;
 
                logger("%20s: min=%f", "range", o->minfp);
-               if (o->maxfp != MAXDOUBLE)
+               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;
 
@@ -104,8 +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;
@@ -123,20 +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;
        }
 }
 
@@ -153,35 +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 (!strcmp("pib", c)) {
+       /* 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;
-       } else if (!strcmp("tib", c)) {
+               if (kb_base == 1000)
+                       mult = 1024;
+               else if (kb_base == 1024)
+                       mult = 1000;
+       } else if (!strncmp("tib", c, 3)) {
                pow = 4;
-               mult = 1000;
-       } else if (!strcmp("gib", c)) {
+               if (kb_base == 1000)
+                       mult = 1024;
+               else if (kb_base == 1024)
+                       mult = 1000;
+       } else if (!strncmp("gib", c, 3)) {
                pow = 3;
-               mult = 1000;
-       } else if (!strcmp("mib", c)) {
+               if (kb_base == 1000)
+                       mult = 1024;
+               else if (kb_base == 1024)
+                       mult = 1000;
+       } else if (!strncmp("mib", c, 3)) {
                pow = 2;
-               mult = 1000;
-       } else if (!strcmp("kib", c)) {
+               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 (!strcmp("p", c) || !strcmp("pb", c))
+               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 (!strcmp("t", c) || !strcmp("tb", c))
+       } else if (!strncmp("t", c, 1) || !strncmp("tb", c, 2)) {
                pow = 4;
-       else if (!strcmp("g", c) || !strcmp("gb", c))
+       } else if (!strncmp("g", c, 1) || !strncmp("gb", c, 2)) {
                pow = 3;
-       else if (!strcmp("m", c) || !strcmp("mb", c))
+       } else if (!strncmp("m", c, 1) || !strncmp("mb", c, 2)) {
                pow = 2;
-       else if (!strcmp("k", c) || !strcmp("kb", c))
+       } else if (!strncmp("k", c, 1) || !strncmp("kb", c, 2)) {
                pow = 1;
-       else if (!strcmp("%", c)) {
+       } else if (!strncmp("%", c, 1)) {
                *percent = 1;
                free(c);
                return ret;
@@ -220,33 +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;
@@ -258,19 +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;
 }
 
-static int check_str_bytes(const char *p, long long *val, void *data)
+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)
@@ -312,7 +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;
        }
@@ -335,7 +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;
 
@@ -351,9 +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                                    \
@@ -363,7 +472,7 @@ 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;
+       int il=0, *ilp;
        fio_fp64_t *flp;
        long long ull, *ullp;
        long ul1, ul2;
@@ -395,18 +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;
                        }
                }
@@ -424,18 +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"
@@ -447,67 +560,85 @@ 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) {
+                       /*
+                       ** 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;
                }
@@ -522,20 +653,40 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                        return 1;
                }
 
-               flp = td_var(data, o->off1);
+               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);
                }
 
@@ -547,7 +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))) {
@@ -583,6 +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: */
@@ -615,50 +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);
                                        }
                                }
                        }
@@ -677,6 +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;
 
@@ -697,23 +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);
@@ -795,6 +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)
 {
@@ -827,14 +977,14 @@ static int opt_cmp(const void *p1, const void *p2)
 
        if (*(char **)p1) {
                s = strdup(*((char **) p1));
-               o = get_option(s, fio_options, &foo);
+               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);
+               o = get_option(s, __fio_options, &foo);
                if (o)
                        prio2 = o->prio;
                free(s);
@@ -845,13 +995,32 @@ static int opt_cmp(const void *p1, const void *p2)
 
 void sort_options(char **opts, struct fio_option *options, int num_opts)
 {
-       fio_options = options;
+       __fio_options = options;
        qsort(opts, num_opts, sizeof(char *), opt_cmp);
-       fio_options = NULL;
+       __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;
 
@@ -861,15 +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;
 
@@ -890,19 +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);
@@ -920,11 +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;
@@ -937,6 +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)
 {
@@ -1013,6 +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) ||
@@ -1079,10 +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;
@@ -1092,22 +1284,23 @@ void option_init(struct fio_option *o)
                        o->maxval = UINT_MAX;
        }
        if (o->type == FIO_OPT_FLOAT_LIST) {
-               o->minfp = MINDOUBLE;
-               o->maxfp = MAXDOUBLE;
+               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->category) {
+               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;
-       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);
-       }
 }
 
 /*
@@ -1120,8 +1313,28 @@ void options_init(struct fio_option *options)
 
        dprint(FD_PARSE, "init options\n");
 
-       for (o = &options[0]; o->name; o++)
+       for (o = &options[0]; o->name; o++) {
                option_init(o);
+               if (o->inverse)
+                       o->inv_opt = find_option(options, o->inverse);
+       }
+}
+
+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)
@@ -1132,10 +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;