[PATCH] Be strict in checking option ranges

[fio.git] / parse.c

diff --git a/parse.c b/parse.c
index 50d8ae5e5f4fe56ea12ba5ff33ca76fe48e114a4..1e709ddbcb0dda56383ed557954e83d388aed3c1 100644 (file)
--- a/parse.c
+++ b/parse.c
@@ -48,7 +48,7 @@ static unsigned long get_mult_bytes(char c)
 /*
  * convert string into decimal value, noting any size suffix
  */
-static int str_to_decimal(const char *str, unsigned long long *val, int kilo)
+static int str_to_decimal(const char *str, long long *val, int kilo)
 {
        int len;
 
@@ -68,12 +68,12 @@ static int str_to_decimal(const char *str, unsigned long long *val, int kilo)
        return 0;
 }
 
-static int check_str_bytes(const char *p, unsigned long long *val)
+static int check_str_bytes(const char *p, long long *val)
 {
        return str_to_decimal(p, val, 1);
 }
 
-static int check_str_time(const char *p, unsigned long long *val)
+static int check_str_time(const char *p, long long *val)
 {
        return str_to_decimal(p, val, 0);
 }
@@ -96,7 +96,7 @@ void strip_blank_end(char *p)
        *(s + 1) = '\0';
 }
 
-static int check_range_bytes(const char *str, unsigned long *val)
+static int check_range_bytes(const char *str, long *val)
 {
        char suffix;
 
@@ -114,7 +114,7 @@ static int check_range_bytes(const char *str, unsigned long *val)
        return 1;
 }
 
-static int check_int(const char *p, unsigned int *val)
+static int check_int(const char *p, int *val)
 {
        if (!strlen(p))
                return 1;
@@ -148,9 +148,9 @@ static struct fio_option *find_option(struct fio_option *options,
 static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                           int first, int more)
 {
-       unsigned int il, *ilp;
-       unsigned long long ull, *ullp;
-       unsigned long ul1, ul2;
+       int il, *ilp;
+       long long ull, *ullp;
+       long ul1, ul2;
        char **cp;
        int ret = 0, is_time = 0;
 
@@ -180,8 +180,14 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
                if (ret)
                        break;
 
-               if (o->max_val && ull > o->max_val)
-                       ull = o->max_val;
+               if (o->maxval && ull > o->maxval) {
+                       fprintf(stderr, "max value out of range: %lld (%d max)\n", ull, o->maxval);
+                       return 1;
+               }
+               if (o->minval && ull < o->minval) {
+                       fprintf(stderr, "min value out of range: %lld (%d min)\n", ull, o->minval);
+                       return 1;
+               }
 
                if (fn)
                        ret = fn(data, &ull);
@@ -242,15 +248,22 @@ static int __handle_option(struct fio_option *o, const char *ptr, void *data,
 
                break;
        }
-       case FIO_OPT_INT: {
+       case FIO_OPT_INT:
+       case FIO_OPT_BOOL: {
                fio_opt_int_fn *fn = o->cb;
 
                ret = check_int(ptr, &il);
                if (ret)
                        break;
 
-               if (o->max_val && il > o->max_val)
-                       il = o->max_val;
+               if (o->maxval && il > (int) o->maxval) {
+                       fprintf(stderr, "max value out of range: %d (%d max)\n", il, o->maxval);
+                       return 1;
+               }
+               if (o->minval && il < o->minval) {
+                       fprintf(stderr, "min value out of range: %d (%d min)\n", il, o->minval);
+                       return 1;
+               }
 
                if (fn)
                        ret = fn(data, &il);
@@ -361,3 +374,107 @@ int parse_option(const char *opt, struct fio_option *options, void *data)
        fprintf(stderr, "fio: failed parsing %s\n", opt);
        return 1;
 }
+
+static void show_option_range(struct fio_option *o)
+{
+       if (!o->minval && !o->maxval)
+               return;
+
+       printf("%16s: min=%d, max=%d\n", "range", o->minval, o->maxval);
+}
+
+static void show_option_values(struct fio_option *o)
+{
+       const char *msg;
+       int i = 0;
+
+       if (!o->posval)
+               return;
+
+       do {
+               msg = o->posval[i];
+               if (!msg)
+                       break;
+
+               if (!i)
+                       printf("%16s: ", "valid values");
+
+               printf("%s,", msg);
+               i++;
+       } while (1);
+
+       if (i)
+               printf("\n");
+}
+
+int show_cmd_help(struct fio_option *options, const char *name)
+{
+       int show_all = !strcmp(name, "all");
+       struct fio_option *o = &options[0];
+       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)",
+       };
+       int found = 0;
+
+       while (o->name) {
+               int match = !strcmp(name, o->name);
+
+               if (show_all || match) {
+                       found = 1;
+                       printf("%16s: %s\n", o->name, o->help);
+                       if (match) {
+                               printf("%16s: %s\n", "type", typehelp[o->type]);
+                               printf("%16s: %s\n", "default", o->def ? o->def : "no default");
+                               show_option_range(o);
+                               show_option_values(o);
+                       }
+               }
+
+               o++;
+       }
+
+       if (found)
+               return 0;
+
+       printf("No such command: %s\n", name);
+       return 1;
+}
+
+/*
+ * Handle parsing of default parameters.
+ */
+void fill_default_options(void *data, struct fio_option *options)
+{
+       struct fio_option *o = &options[0];
+
+       while (o->name) {
+               if (o->def)
+                       handle_option(o, o->def, data);
+               o++;
+       }
+}
+
+/*
+ * Sanitize the options structure. For now it just sets min/max for bool
+ * values.
+ */
+void options_init(struct fio_option *options)
+{
+       struct fio_option *o = &options[0];
+
+       while (o->name) {
+               if (o->type == FIO_OPT_BOOL) {
+                       o->minval = 0;
+                       o->maxval = 1;
+               }
+               o++;
+       }
+}