Add section 9 to HOWTO table of contents.
[fio.git] / parse.c
diff --git a/parse.c b/parse.c
index afbde61ef6f7c281ea5d1fb10ba0661f4ad30b4d..51cefcaef4abd3d93db61e658d5ae4c29b6d437a 100644 (file)
--- a/parse.c
+++ b/parse.c
 #include <limits.h>
 #include <stdlib.h>
 #include <math.h>
+#include <float.h>
 
 #include "parse.h"
 #include "debug.h"
 #include "options.h"
+#include "minmax.h"
+#include "lib/ieee754.h"
 
 static struct fio_option *fio_options;
 extern unsigned int fio_get_kb_base(void *);
@@ -48,11 +51,11 @@ 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))
+               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 {
@@ -180,6 +183,7 @@ static unsigned long long __get_mult_bytes(const char *p, void *data,
                pow = 1;
        else if (!strcmp("%", c)) {
                *percent = 1;
+               free(c);
                return ret;
        }
 
@@ -199,9 +203,9 @@ static unsigned long long get_mult_bytes(const char *str, int len, void *data,
        if (len < 2)
                return __get_mult_bytes(str, data, percent);
 
-        /*
-         * Go forward until we hit a non-digit, or +/- sign
-         */
+       /*
+        * Go forward until we hit a non-digit, or +/- sign
+        */
        while ((p - str) <= len) {
                if (!isdigit((int) *p) &&
                    (((*p != '+') && (*p != '-')) || digit_seen))
@@ -273,6 +277,8 @@ void strip_blank_front(char **p)
 {
        char *s = *p;
 
+       if (!strlen(s))
+               return;
        while (isspace((int) *s))
                s++;
 
@@ -283,6 +289,9 @@ void strip_blank_end(char *p)
 {
        char *start = p, *s;
 
+       if (!strlen(p))
+               return;
+
        s = strchr(p, ';');
        if (s)
                *s = '\0';
@@ -337,6 +346,11 @@ static int opt_len(const char *str)
        return (int)(postfix - str);
 }
 
+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)             \
        do {                                            \
                ptr = td_var((data), (off));            \
@@ -350,11 +364,11 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                           int first, int more, int curr)
 {
        int il, *ilp;
-       double* flp;
+       fio_fp64_t *flp;
        long long ull, *ullp;
        long ul1, ul2;
        double uf;
-       char **cp;
+       char **cp = NULL;
        int ret = 0, is_time = 0;
        const struct value_pair *vp;
        struct value_pair posval[PARSE_MAX_VP];
@@ -381,7 +395,7 @@ 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 (!strncmp(vp->ival, ptr, opt_len(ptr))) {
+                       if (!strncmp(vp->ival, ptr, str_match_len(vp, ptr))) {
                                ret = 0;
                                if (o->roff1) {
                                        if (vp->or)
@@ -408,23 +422,29 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
        case FIO_OPT_INT:
        case FIO_OPT_STR_VAL: {
                fio_opt_str_val_fn *fn = o->cb;
+               char tmp[128], *p;
+
+               strncpy(tmp, ptr, sizeof(tmp) - 1);
+               p = strchr(tmp, ',');
+               if (p)
+                       *p = '\0';
 
                if (is_time)
-                       ret = check_str_time(ptr, &ull);
+                       ret = check_str_time(tmp, &ull);
                else
-                       ret = check_str_bytes(ptr, &ull, data);
+                       ret = check_str_bytes(tmp, &ull, data);
 
                if (ret)
                        break;
 
                if (o->maxval && ull > o->maxval) {
-                       log_err("max value out of range: %lld"
-                                       " (%d max)\n", ull, o->maxval);
+                       log_err("max value out of range: %llu"
+                                       " (%u max)\n", ull, o->maxval);
                        return 1;
                }
                if (o->minval && ull < o->minval) {
-                       log_err("min value out of range: %lld"
-                                       " (%d min)\n", ull, o->minval);
+                       log_err("min value out of range: %llu"
+                                       " (%u min)\n", ull, o->minval);
                        return 1;
                }
 
@@ -438,12 +458,32 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                                        else
                                                val_store(ilp, ull, o->off1, 0, data);
                                }
-                               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 (curr == 2) {
+                                       if (o->roff3)
+                                               *(unsigned int *) o->roff3 = ull;
+                                       else if (o->off3)
+                                               val_store(ilp, ull, o->off3, 0, data);
+                               }
+                               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 (curr < 2) {
+                                               if (o->roff3)
+                                                       *(unsigned int *) o->roff3 = ull;
+                                               else if (o->off3)
+                                                       val_store(ilp, ull, o->off3, 0, data);
+                                       }
+                               }
                        } else {
                                if (first) {
                                        if (o->roff1)
@@ -462,79 +502,112 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                break;
        }
        case FIO_OPT_FLOAT_LIST: {
+               char *cp2;
 
                if (first) {
-                       ul2 = 1;
+                       /*
+                       ** Initialize precision to 0 and zero out list
+                       ** in case specified list is shorter than default
+                       */
+                       ul2 = 0;
                        ilp = td_var(data, o->off2);
                        *ilp = ul2;
+
+                       flp = td_var(data, 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)) {
                        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[curr].u.f = 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++;
+
+                       ilp = td_var(data, o->off2);
+                       if (len > *ilp)
+                               *ilp = len;
+               }
 
                break;
        }
        case FIO_OPT_STR_STORE: {
                fio_opt_str_fn *fn = o->cb;
 
-               posval_sort(o, posval);
+               if (o->roff1 || o->off1) {
+                       if (o->roff1)
+                               cp = (char **) o->roff1;
+                       else if (o->off1)
+                               cp = td_var(data, o->off1);
 
-               if (!o->posval[0].ival) {
-                       vp = NULL;
-                       goto match;
+                       *cp = strdup(ptr);
                }
 
-               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;
+               if (fn)
+                       ret = fn(data, ptr);
+               else if (o->posval[0].ival) {
+                       posval_sort(o, posval);
 
-                               ret = 0;
-                               if (vp->cb)
-                                       fn = vp->cb;
-match:
-                               if (o->roff1)
-                                       cp = (char **) o->roff1;
-                               else
-                                       cp = td_var(data, o->off1);
-                               *cp = strdup(ptr);
-                               rest = strstr(*cp, ":");
-                               if (rest) {
-                                       *rest = '\0';
-                                       ptr = rest + 1;
-                               } else if (vp && vp->cb)
-                                       ptr = NULL;
-                               break;
+                       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, str_match_len(vp, 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 (ret && !all_skipped)
-                       show_option_values(o);
-               else if (fn && ptr)
-                       ret = fn(data, ptr);
+               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;
        }
@@ -583,12 +656,43 @@ match:
                                else
                                        val_store(ilp, ul2, o->off2, 0, 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);
+                       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 (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 (!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 (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);
+                                       }
+                               }
                        }
                }
 
@@ -692,7 +796,7 @@ static int handle_option(struct fio_option *o, const char *__ptr, void *data)
                        ptr2 = strchr(ptr, ',');
                        if (ptr2 && *(ptr2 + 1) == '\0')
                                *ptr2 = '\0';
-                       if (o->type != FIO_OPT_STR_MULTI) {
+                       if (o->type != FIO_OPT_STR_MULTI && o->type != FIO_OPT_RANGE) {
                                if (!ptr2)
                                        ptr2 = strchr(ptr, ':');
                                if (!ptr2)
@@ -723,7 +827,7 @@ static int handle_option(struct fio_option *o, const char *__ptr, void *data)
        return ret;
 }
 
-static struct fio_option *get_option(const char *opt,
+static struct fio_option *get_option(char *opt,
                                     struct fio_option *options, char **post)
 {
        struct fio_option *o;
@@ -733,7 +837,7 @@ static struct fio_option *get_option(const char *opt,
        if (ret) {
                *post = ret;
                *ret = '\0';
-               ret = (char *) opt;
+               ret = opt;
                (*post)++;
                strip_blank_end(ret);
                o = find_option(options, ret);
@@ -747,24 +851,27 @@ static struct fio_option *get_option(const char *opt,
 
 static int opt_cmp(const void *p1, const void *p2)
 {
-       struct fio_option *o1, *o2;
-       char *s1, *s2, *foo;
+       struct fio_option *o;
+       char *s, *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);
+       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;
 }
 
@@ -793,83 +900,33 @@ int parse_cmd_option(const char *opt, const char *val,
        return 1;
 }
 
-/*
- * Return a copy of the input string with substrings of the form ${VARNAME}
- * substituted with the value of the environment variable VARNAME.  The
- * substitution always occurs, even if VARNAME is empty or the corresponding
- * environment variable undefined.
- */
-static char *option_dup_subs(const char *opt)
-{
-       char out[OPT_LEN_MAX+1];
-       char in[OPT_LEN_MAX+1];
-       char *outptr = out;
-       char *inptr = in;
-       char *ch1, *ch2, *env;
-       ssize_t nchr = OPT_LEN_MAX;
-       size_t envlen;
-
-       if (strlen(opt) + 1 > OPT_LEN_MAX) {
-               log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
-               return NULL;
-       }
-
-       in[OPT_LEN_MAX] = '\0';
-       strncpy(in, opt, OPT_LEN_MAX);
-
-       while (*inptr && nchr > 0) {
-               if (inptr[0] == '$' && 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)
+int parse_option(char *opt, const char *input,
+                struct fio_option *options, struct fio_option **o, void *data)
 {
-       struct fio_option *o;
-       char *post, *tmp;
+       char *post;
 
-       tmp = option_dup_subs(opt);
-       if (!tmp)
+       if (!opt) {
+               log_err("fio: failed parsing %s\n", input);
+               *o = NULL;
                return 1;
+       }
 
-       o = get_option(tmp, options, &post);
-       if (!o) {
-               log_err("Bad option <%s>\n", tmp);
-               free(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)) {
-               free(tmp);
+       if (!handle_option(*o, post, data)) {
                return 0;
        }
 
-       log_err("fio: failed parsing %s\n", opt);
-       free(tmp);
+       log_err("fio: failed parsing %s\n", input);
        return 1;
 }
 
@@ -1062,9 +1119,13 @@ void option_init(struct fio_option *o)
                o->minval = 0;
                o->maxval = 1;
        }
+       if (o->type == FIO_OPT_INT) {
+               if (!o->maxval)
+                       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) {
                log_err("Option %s: string set option with"
@@ -1103,7 +1164,7 @@ 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)
+               if (o->type != FIO_OPT_STR_STORE || !o->off1)
                        continue;
 
                ptr = td_var(data, o->off1);