Add parser support for out-of-td option storage
[fio.git] / parse.c
diff --git a/parse.c b/parse.c
index 8e29fabf8e64e87129d900fea6300a9b80a5daa7..2cdac54012515e2629baa7e91a4e52308e752466 100644 (file)
--- a/parse.c
+++ b/parse.c
@@ -8,9 +8,14 @@
 #include <string.h>
 #include <errno.h>
 #include <limits.h>
+#include <stdlib.h>
 
 #include "parse.h"
 #include "debug.h"
+#include "options.h"
+
+static struct fio_option *fio_options;
+extern unsigned int fio_get_kb_base(void *);
 
 static int vp_cmp(const void *p1, const void *p2)
 {
@@ -38,12 +43,15 @@ static void posval_sort(struct fio_option *o, struct value_pair *vpmap)
        qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
 }
 
-static void show_option_range(struct fio_option *o)
+static void show_option_range(struct fio_option *o, FILE *out)
 {
        if (!o->minval && !o->maxval)
                return;
 
-       printf("%20s: min=%d, max=%d\n", "range", o->minval, o->maxval);
+       fprintf(out, "%20s: min=%d", "range", o->minval);
+       if (o->maxval)
+               fprintf(out, ", max=%d", o->maxval);
+       fprintf(out, "\n");
 }
 
 static void show_option_values(struct fio_option *o)
@@ -67,6 +75,28 @@ static void show_option_values(struct fio_option *o)
                printf("\n");
 }
 
+static void show_option_help(struct fio_option *o, FILE *out)
+{
+       const char *typehelp[] = {
+               "string (opt=bla)",
+               "string with possible k/m/g postfix (opt=4k)",
+               "string with time postfix (opt=10s)",
+               "string (opt=bla)",
+               "string with dual range (opt=1k-4k,4k-8k)",
+               "integer value (opt=100)",
+               "boolean value (opt=1)",
+               "no argument (opt)",
+       };
+
+       if (o->alias)
+               fprintf(out, "%20s: %s\n", "alias", o->alias);
+
+       fprintf(out, "%20s: %s\n", "type", typehelp[o->type]);
+       fprintf(out, "%20s: %s\n", "default", o->def ? o->def : "no default");
+       show_option_range(o, stdout);
+       show_option_values(o);
+}
+
 static unsigned long get_mult_time(char c)
 {
        switch (c) {
@@ -84,57 +114,81 @@ static unsigned long get_mult_time(char c)
        }
 }
 
-static unsigned long get_mult_bytes(char c)
+static unsigned long long get_mult_bytes(char c, void *data)
 {
+       unsigned int kb_base = fio_get_kb_base(data);
+       unsigned long long ret = 1;
+
        switch (c) {
-       case 'k':
-       case 'K':
-               return 1024;
-       case 'm':
-       case 'M':
-               return 1024 * 1024;
+       default:
+               break;
+       case 'p':
+       case 'P':
+               ret *= (unsigned long long) kb_base;
+       case 't':
+       case 'T':
+               ret *= (unsigned long long) kb_base;
        case 'g':
        case 'G':
-               return 1024 * 1024 * 1024;
-       case 'e':
-       case 'E':
-               return 1024 * 1024 * 1024 * 1024UL;
-       default:
-               return 1;
+               ret *= (unsigned long long) kb_base;
+       case 'm':
+       case 'M':
+               ret *= (unsigned long long) kb_base;
+       case 'k':
+       case 'K':
+               ret *= (unsigned long long) kb_base;
+               break;
        }
+
+       return ret;
 }
 
 /*
  * convert string into decimal value, noting any size suffix
  */
-int str_to_decimal(const char *str, long long *val, int kilo)
+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) {
+               const char *p;
+               /*
+                * if the last char is 'b' or 'B', the user likely used
+                * "1gb" instead of just "1g". If the second to last is also
+                * a letter, adjust.
+                */
+               p = str + len - 1;
+               if ((*p == 'b' || *p == 'B') && isalpha(*(p - 1)))
+                       --p;
+
+               *val *= get_mult_bytes(*p, data);
+       } else
                *val *= get_mult_time(str[len - 1]);
 
        return 0;
 }
 
-static int check_str_bytes(const char *p, long long *val)
+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)
@@ -149,7 +203,7 @@ void strip_blank_front(char **p)
 
 void strip_blank_end(char *p)
 {
-       char *s;
+       char *start = p, *s;
 
        s = strchr(p, ';');
        if (s)
@@ -161,13 +215,13 @@ void strip_blank_end(char *p)
                p = s;
 
        s = p + strlen(p);
-       while ((isspace(*s) || iscntrl(*s)) && (s > p))
+       while ((isspace(*s) || iscntrl(*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;
 
@@ -175,7 +229,7 @@ static int check_range_bytes(const char *str, long *val)
                return 1;
 
        if (sscanf(str, "%lu%c", val, &suffix) == 2) {
-               *val *= get_mult_bytes(suffix);
+               *val *= get_mult_bytes(suffix, data);
                return 0;
        }
 
@@ -200,16 +254,35 @@ static int check_int(const char *p, int *val)
        return 1;
 }
 
+static inline int o_match(struct fio_option *o, const char *opt)
+{
+       if (!strcmp(o->name, opt))
+               return 1;
+       else if (o->alias && !strcmp(o->alias, opt))
+               return 1;
+
+       return 0;
+}
+
 static struct fio_option *find_option(struct fio_option *options,
-                                     const char *opt)
+                                     struct flist_head *eops, const char *opt)
 {
+       struct flist_head *n;
        struct fio_option *o;
 
-       for (o = &options[0]; o->name; o++) {
-               if (!strcmp(o->name, opt))
-                       return o;
-               else if (o->alias && !strcmp(o->alias, opt))
+       for (o = &options[0]; o->name; o++)
+               if (o_match(o, opt))
                        return o;
+
+       if (!eops)
+               return NULL;
+
+       flist_for_each(n, eops) {
+               struct ext_option *eopt;
+
+               eopt = flist_entry(n, struct ext_option, list);
+               if (o_match(&eopt->o, opt))
+                       return &eopt->o;
        }
 
        return NULL;
@@ -233,7 +306,7 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
        dprint(FD_PARSE, "__handle_option=%s, type=%d, ptr=%s\n", o->name,
                                                        o->type, ptr);
 
-       if (!ptr && o->type != FIO_OPT_STR_SET) {
+       if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
                fprintf(stderr, "Option %s requires an argument\n", o->name);
                return 1;
        }
@@ -254,9 +327,13 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                        ret = 1;
                        if (!strncmp(vp->ival, ptr, strlen(vp->ival))) {
                                ret = 0;
-                               if (!o->off1)
-                                       break;
-                               val_store(ilp, vp->oval, o->off1, data);
+                               if (o->roff1)
+                                       *(unsigned int *) o->roff1 = vp->oval;
+                               else {
+                                       if (!o->off1)
+                                               break;
+                                       val_store(ilp, vp->oval, o->off1, data);
+                               }
                                break;
                        }
                }
@@ -269,14 +346,14 @@ 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;
@@ -295,16 +372,32 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                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 long long *) o->roff1 = ull;
+                                       else
+                                               val_store(ilp, ull, o->off1, data);
+                               }
+                               if (!more) {
+                                       if (o->roff2)
+                                               *(unsigned long long *) o->roff2 = ull;
+                                       else if (o->off2)
+                                               val_store(ilp, ull, o->off2, 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, data);
+                               }
+                               if (!more) {
+                                       if (o->roff2)
+                                               *(unsigned long long *) o->roff2 =  ull;
+                                       else if (o->off2)
+                                               val_store(ullp, ull, o->off2, data);
+                               }
                        }
                }
                break;
@@ -312,7 +405,11 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
        case FIO_OPT_STR_STORE: {
                fio_opt_str_fn *fn = o->cb;
 
-               cp = td_var(data, o->off1);
+               if (o->roff1)
+                       cp = (char **) o->roff1;
+               else
+                       cp = td_var(data, o->off1);
+
                *cp = strdup(ptr);
                if (fn) {
                        ret = fn(data, ptr);
@@ -343,8 +440,8 @@ 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;
@@ -354,10 +451,19 @@ 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 long *) o->roff1 = ul1;
+                               else
+                                       val_store(ilp, ul1, o->off1, data);
+                               if (o->roff2)
+                                       *(unsigned long *) o->roff2 = ul2;
+                               else
+                                       val_store(ilp, ul2, o->off2, data);
                        }
-                       if (o->off3 && o->off4) {
+                       if (o->roff3 && o->roff4) {
+                               *(unsigned long *) o->roff3 = ul1;
+                               *(unsigned long *) o->roff4 = ul2;
+                       } else if (o->off3 && o->off4) {
                                val_store(ilp, ul1, o->off3, data);
                                val_store(ilp, ul2, o->off4, data);
                        }
@@ -365,7 +471,6 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 
                break;
        }
-       case FIO_OPT_INT:
        case FIO_OPT_BOOL: {
                fio_opt_int_fn *fn = o->cb;
 
@@ -390,10 +495,18 @@ 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, data);
+                       }
+                       if (!more) {
+                               if (o->roff2)
+                                       *(unsigned int *) o->roff2 = il;
+                               else if (o->off2)
+                                       val_store(ilp, il, o->off2, data);
+                       }
                }
                break;
        }
@@ -403,27 +516,54 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                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);
+                       if (first) {
+                               if (o->roff1)
+                                       *(unsigned int *) o->roff1 = 1;
+                               else
+                                       val_store(ilp, 1, o->off1, data);
+                       }
+                       if (!more) {
+                               if (o->roff2)
+                                       *(unsigned int *) o->roff2 = 1;
+                               else if (o->off2)
+                                       val_store(ilp, 1, o->off2, data);
+                       }
                }
                break;
        }
+       case FIO_OPT_DEPRECATED:
+               fprintf(stdout, "Option %s is deprecated\n", o->name);
+               break;
        default:
                fprintf(stderr, "Bad option type %u\n", o->type);
                ret = 1;
        }
 
+       if (ret)
+               return ret;
+
+       if (o->verify) {
+               ret = o->verify(o, data);
+               if (ret) {
+                       fprintf(stderr,"Correct format for offending option\n");
+                       fprintf(stderr, "%20s: %s\n", o->name, o->help);
+                       show_option_help(o, stderr);
+               }
+       }
+
        return ret;
 }
 
-static int handle_option(struct fio_option *o, const char *ptr, void *data)
+static int handle_option(struct fio_option *o, const char *__ptr, void *data)
 {
-       const char *ptr2 = NULL;
+       char *ptr, *ptr2 = NULL;
        int r1, r2;
 
-       dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, ptr);
+       dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);
+
+       ptr = NULL;
+       if (__ptr)
+               ptr = strdup(__ptr);
 
        /*
         * See if we have a second set of parameters, hidden after a comma.
@@ -434,6 +574,8 @@ static int handle_option(struct fio_option *o, const char *ptr, void *data)
            (o->type != FIO_OPT_STR_STORE) &&
            (o->type != FIO_OPT_STR)) {
                ptr2 = strchr(ptr, ',');
+               if (ptr2 && *(ptr2 + 1) == '\0')
+                       *ptr2 = '\0';
                if (!ptr2)
                        ptr2 = strchr(ptr, ':');
                if (!ptr2)
@@ -447,23 +589,82 @@ static int handle_option(struct fio_option *o, const char *ptr, void *data)
         */
        r1 = __handle_option(o, ptr, data, 1, !!ptr2);
 
-       if (!ptr2)
+       if (!ptr2) {
+               if (ptr)
+                       free(ptr);
                return r1;
+       }
 
        ptr2++;
        r2 = __handle_option(o, ptr2, data, 0, 0);
 
+       if (ptr)
+               free(ptr);
        return r1 && r2;
 }
 
+static struct fio_option *get_option(const char *opt,
+                                    struct fio_option *options,
+                                    struct flist_head *eops, char **post)
+{
+       struct fio_option *o;
+       char *ret;
+
+       ret = strchr(opt, '=');
+       if (ret) {
+               *post = ret;
+               *ret = '\0';
+               ret = (char *) opt;
+               (*post)++;
+               strip_blank_end(ret);
+               o = find_option(options, eops, ret);
+       } else {
+               o = find_option(options, eops, opt);
+               *post = NULL;
+       }
+
+       return o;
+}
+
+static int opt_cmp(const void *p1, const void *p2)
+{
+       struct fio_option *o1, *o2;
+       char *s1, *s2, *foo;
+       int prio1, prio2;
+
+       s1 = strdup(*((char **) p1));
+       s2 = strdup(*((char **) p2));
+
+       o1 = get_option(s1, fio_options, NULL, &foo);
+       o2 = get_option(s2, fio_options, NULL, &foo);
+
+       prio1 = prio2 = 0;
+       if (o1)
+               prio1 = o1->prio;
+       if (o2)
+               prio2 = o2->prio;
+
+       free(s1);
+       free(s2);
+       return prio2 - prio1;
+}
+
+void sort_options(char **opts, struct fio_option *options, int num_opts)
+{
+       fio_options = options;
+       qsort(opts, num_opts, sizeof(char *), opt_cmp);
+       fio_options = NULL;
+}
+
 int parse_cmd_option(const char *opt, const char *val,
-                    struct fio_option *options, void *data)
+                    struct fio_option *options, struct flist_head *eops,
+                    void *data)
 {
        struct fio_option *o;
 
-       o = find_option(options, opt);
+       o = find_option(options, eops, opt);
        if (!o) {
-               fprintf(stderr, "Bad option %s\n", opt);
+               fprintf(stderr, "Bad option <%s>\n", opt);
                return 1;
        }
 
@@ -474,28 +675,73 @@ int parse_cmd_option(const char *opt, const char *val,
        return 1;
 }
 
-int parse_option(const char *opt, struct fio_option *options, void *data)
+/*
+ * Return a copy of the input string with substrings of the form ${VARNAME}
+ * substituted with the value of the environment variable VARNAME.  The
+ * substitution always occurs, even if VARNAME is empty or the corresponding
+ * environment variable undefined.
+ */
+static char *option_dup_subs(const char *opt)
 {
-       struct fio_option *o;
-       char *pre, *post;
-       char *tmp;
-
-       tmp = strdup(opt);
-
-       pre = strchr(tmp, '=');
-       if (pre) {
-               post = pre;
-               *pre = '\0';
-               pre = tmp;
-               post++;
-               o = find_option(options, pre);
-       } else {
-               o = find_option(options, tmp);
-               post = NULL;
+       char out[OPT_LEN_MAX+1];
+       char in[OPT_LEN_MAX+1];
+       char *outptr = out;
+       char *inptr = in;
+       char *ch1, *ch2, *env;
+       ssize_t nchr = OPT_LEN_MAX;
+       size_t envlen;
+
+       if (strlen(in) + 1 > OPT_LEN_MAX) {
+               fprintf(stderr, "OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
+               return NULL;
+       }
+
+       in[OPT_LEN_MAX] = '\0';
+       strncpy(in, opt, OPT_LEN_MAX);
+
+       while (*inptr && nchr > 0) {
+               if (inptr[0] == '$' && inptr[1] == '{') {
+                       ch2 = strchr(inptr, '}');
+                       if (ch2 && inptr+1 < ch2) {
+                               ch1 = inptr+2;
+                               inptr = ch2+1;
+                               *ch2 = '\0';
+
+                               env = getenv(ch1);
+                               if (env) {
+                                       envlen = strlen(env);
+                                       if (envlen <= nchr) {
+                                               memcpy(outptr, env, envlen);
+                                               outptr += envlen;
+                                               nchr -= envlen;
+                                       }
+                               }
+
+                               continue;
+                       }
+               }
+
+               *outptr++ = *inptr++;
+               --nchr;
        }
 
+       *outptr = '\0';
+       return strdup(out);
+}
+
+int parse_option(const char *opt, struct fio_option *options,
+                struct flist_head *ext_opt_list, void *data)
+{
+       struct fio_option *o;
+       char *post, *tmp;
+
+       tmp = option_dup_subs(opt);
+       if (!tmp)
+               return 1;
+
+       o = get_option(tmp, options, ext_opt_list, &post);
        if (!o) {
-               fprintf(stderr, "Bad option %s\n", tmp);
+               fprintf(stderr, "Bad option <%s>\n", tmp);
                free(tmp);
                return 1;
        }
@@ -549,29 +795,6 @@ static int string_distance(const char *s1, const char *s2)
        return i;
 }
 
-static void show_option_help(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)",
-       };
-
-       if (o->alias)
-               printf("%20s: %s\n", "alias", o->alias);
-
-       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);
-}
-
 static struct fio_option *find_child(struct fio_option *options,
                                     struct fio_option *o)
 {
@@ -644,6 +867,9 @@ 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 (name) {
                        if (!strcmp(name, o->name) ||
                            (o->alias && !strcmp(name, o->alias)))
@@ -673,7 +899,7 @@ int show_cmd_help(struct fio_option *options, const char *name)
                if (!match)
                        continue;
 
-               show_option_help(o);
+               show_option_help(o, stdout);
        }
 
        if (found)
@@ -683,7 +909,7 @@ int show_cmd_help(struct fio_option *options, const char *name)
        if (closest) {
                printf(" - showing closest match\n");
                printf("%20s: %s\n", closest->name, closest->help);
-               show_option_help(closest);
+               show_option_help(closest, stdout);
        } else
                printf("\n");
 
@@ -704,6 +930,30 @@ void fill_default_options(void *data, struct fio_option *options)
                        handle_option(o, o->def, data);
 }
 
+void option_init(struct fio_option *o)
+{
+       if (o->type == FIO_OPT_DEPRECATED)
+               return;
+       if (o->type == FIO_OPT_BOOL) {
+               o->minval = 0;
+               o->maxval = 1;
+       }
+       if (o->type == FIO_OPT_STR_SET && o->def) {
+               fprintf(stderr, "Option %s: string set option with"
+                               " default will always be true\n", o->name);
+       }
+       if (!o->cb && !o->off1) {
+               fprintf(stderr, "Option %s: neither cb nor offset given\n",
+                                                       o->name);
+       }
+       if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE)
+               return;
+       if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4)) {
+               fprintf(stderr, "Option %s: both cb and offset given\n",
+                                                        o->name);
+       }
+}
+
 /*
  * Sanitize the options structure. For now it just sets min/max for bool
  * values and whether both callback and offsets are given.
@@ -714,25 +964,6 @@ void options_init(struct fio_option *options)
 
        dprint(FD_PARSE, "init options\n");
 
-       for (o = &options[0]; o->name; o++) {
-               if (o->type == FIO_OPT_BOOL) {
-                       o->minval = 0;
-                       o->maxval = 1;
-               }
-               if (o->type == FIO_OPT_STR_SET && o->def) {
-                       fprintf(stderr, "Option %s: string set option with"
-                                       " default will always be true\n",
-                                               o->name);
-               }
-               if (!o->cb && !o->off1) {
-                       fprintf(stderr, "Option %s: neither cb nor offset"
-                                       " given\n", o->name);
-               }
-               if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE)
-                       continue;
-               if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4)) {
-                       fprintf(stderr, "Option %s: both cb and offset given\n",
-                                                                o->name);
-               }
-       }
+       for (o = &options[0]; o->name; o++)
+               option_init(o);
 }