X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=parse.c;h=102e607ddde58d942e6f2964ebaa50b0410ecfda;hp=204b9d25bf20c5f10ac566d417802ecf090cb757;hb=ee738499877bb1ee913e839cb4a8d4edad2d52ad;hpb=e1f365035a952233463d85d659bd960ba78f012e

diff --git a/parse.c b/parse.c
index 204b9d25..102e607d 100644
--- a/parse.c
+++ b/parse.c
@@ -48,12 +48,13 @@ static unsigned long get_mult_bytes(char c)
 /*
  * convert string into decimal value, noting any size suffix
  */
-static int str_to_decimal(char *p, unsigned long long *val, int kilo)
+static int str_to_decimal(const char *str, unsigned long long *val, int kilo)
 {
-	char *str = p;
 	int len;
 
 	len = strlen(str);
+	if (!len)
+		return 1;
 
 	*val = strtoul(str, NULL, 10);
 	if (*val == ULONG_MAX && errno == ERANGE)
@@ -63,15 +64,16 @@ static int str_to_decimal(char *p, unsigned long long *val, int kilo)
 		*val *= get_mult_bytes(str[len - 1]);
 	else
 		*val *= get_mult_time(str[len - 1]);
+
 	return 0;
 }
 
-static int check_str_bytes(char *p, unsigned long long *val)
+static int check_str_bytes(const char *p, unsigned long long *val)
 {
 	return str_to_decimal(p, val, 1);
 }
 
-static int check_str_time(char *p, unsigned long long *val)
+static int check_str_time(const char *p, unsigned long long *val)
 {
 	return str_to_decimal(p, val, 0);
 }
@@ -94,10 +96,13 @@ void strip_blank_end(char *p)
 	*(s + 1) = '\0';
 }
 
-static int check_range_bytes(char *str, unsigned long *val)
+static int check_range_bytes(const char *str, unsigned long *val)
 {
 	char suffix;
 
+	if (!strlen(str))
+		return 1;
+
 	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 		*val *= get_mult_bytes(suffix);
 		return 0;
@@ -109,48 +114,50 @@ static int check_range_bytes(char *str, unsigned long *val)
 	return 1;
 }
 
-int check_int(char *p, unsigned int *val)
+static int check_int(const char *p, unsigned int *val)
 {
+	if (!strlen(p))
+		return 1;
 	if (sscanf(p, "%u", val) == 1)
 		return 0;
 
 	return 1;
 }
 
-int check_strset(char *p, char *name)
-{
-	return strncmp(p, name, strlen(name));
-}
-
 static struct fio_option *find_option(struct fio_option *options,
 				      const char *opt)
 {
-	struct fio_option *o;
-	int i = 0;
-
-	do {
-		o = &options[i];
-		if (!o->name)
-			break;
+	struct fio_option *o = &options[0];
 
+	while (o->name) {
 		if (!strcmp(o->name, opt))
 			return o;
 
-		i++;
-	} while (1);
+		o++;
+	}
 
 	return NULL;
 }
 
-static int handle_option(struct fio_option *o, char *ptr, void *data)
+#define val_store(ptr, val, off, data)			\
+	do {						\
+		ptr = td_var((data), (off));		\
+		*ptr = (val);				\
+	} while (0)
+
+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, *ulp1, *ulp2;
-	char *tmpbuf, **cp;
+	unsigned long ul1, ul2;
+	char **cp;
 	int ret = 0, is_time = 0;
 
-	tmpbuf = malloc(4096);
+	if (!ptr && o->type != FIO_OPT_STR_SET) {
+		fprintf(stderr, "Option %s requires an argument\n", o->name);
+		return 1;
+	}
 
 	switch (o->type) {
 	case FIO_OPT_STR: {
@@ -161,7 +168,8 @@ static int handle_option(struct fio_option *o, char *ptr, void *data)
 	}
 	case FIO_OPT_STR_VAL_TIME:
 		is_time = 1;
-	case FIO_OPT_STR_VAL: {
+	case FIO_OPT_STR_VAL:
+	case FIO_OPT_STR_VAL_INT: {
 		fio_opt_str_val_fn *fn = o->cb;
 
 		if (is_time)
@@ -172,14 +180,25 @@ static int handle_option(struct fio_option *o, 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)
+			ull = o->maxval;
+		if (o->minval && ull < o->minval)
+			ull = o->minval;
 
 		if (fn)
 			ret = fn(data, &ull);
 		else {
-			ullp = td_var(data, o->off1);
-			*ullp = ull;
+			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);
+			} else {
+				if (first)
+					val_store(ullp, ull, o->off1, data);
+				if (!more && o->off2)
+					val_store(ullp, ull, o->off2, data);
+			}
 		}
 		break;
 	}
@@ -188,9 +207,12 @@ static int handle_option(struct fio_option *o, char *ptr, void *data)
 		*cp = strdup(ptr);
 		break;
 	case FIO_OPT_RANGE: {
+		char tmp[128];
 		char *p1, *p2;
 
-		p1 = strchr(ptr, '-');
+		strncpy(tmp, ptr, sizeof(tmp) - 1);
+
+		p1 = strchr(tmp, '-');
 		if (!p1) {
 			ret = 1;
 			break;
@@ -198,21 +220,28 @@ static int handle_option(struct fio_option *o, char *ptr, void *data)
 
 		p2 = p1 + 1;
 		*p1 = '\0';
+		p1 = tmp;
 
 		ret = 1;
 		if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
 			ret = 0;
-			ulp1 = td_var(data, o->off1);
-			ulp2 = td_var(data, o->off2);
 			if (ul1 > ul2) {
-				*ulp1 = ul2;
-				*ulp2 = ul1;
-			} else {
-				*ulp2 = ul2;
-				*ulp1 = ul1;
+				unsigned long foo = ul1;
+
+				ul1 = ul2;
+				ul2 = foo;
+			}
+
+			if (first) {
+				val_store(ilp, ul1, o->off1, data);
+				val_store(ilp, ul2, o->off2, data);
+			}
+			if (!more && o->off3 && o->off4) {
+				val_store(ilp, ul1, o->off3, data);
+				val_store(ilp, ul2, o->off4, data);
 			}
-		}	
-			
+		}
+
 		break;
 	}
 	case FIO_OPT_INT: {
@@ -222,14 +251,18 @@ static int handle_option(struct fio_option *o, char *ptr, void *data)
 		if (ret)
 			break;
 
-		if (o->max_val && il > o->max_val)
-			il = o->max_val;
+		if (o->maxval && il > o->maxval)
+			il = o->maxval;
+		if (o->minval && il < o->minval)
+			il = o->minval;
 
 		if (fn)
 			ret = fn(data, &il);
 		else {
-			ilp = td_var(data, o->off1);
-			*ilp = il;
+			if (first)
+				val_store(ilp, il, o->off1, data);
+			if (!more && o->off2)
+				val_store(ilp, il, o->off2, data);
 		}
 		break;
 	}
@@ -239,27 +272,75 @@ static int handle_option(struct fio_option *o, char *ptr, void *data)
 		if (fn)
 			ret = fn(data);
 		else {
-			ilp = td_var(data, o->off1);
-			*ilp = 1;
+			if (first)
+				val_store(ilp, 1, o->off1, data);
+			if (!more && o->off2)
+				val_store(ilp, 1, o->off2, data);
 		}
 		break;
 	}
 	default:
-		fprintf(stderr, "Bad option type %d\n", o->type);
+		fprintf(stderr, "Bad option type %u\n", o->type);
 		ret = 1;
 	}
 
-	free(tmpbuf);
 	return ret;
 }
 
+static int handle_option(struct fio_option *o, const char *ptr, void *data)
+{
+	const char *ptr2 = NULL;
+	int r1, r2;
+
+	/*
+	 * See if we have a second set of parameters, hidden after a comma.
+	 * Do this before parsing the first round, to check if we should
+	 * copy set 1 options to set 2.
+	 */
+	if (ptr)
+		ptr2 = strchr(ptr, ',');
+
+	/*
+	 * Don't return early if parsing the first option fails - if
+	 * we are doing multiple arguments, we can allow the first one
+	 * being empty.
+	 */
+	r1 = __handle_option(o, ptr, data, 1, !!ptr2);
+
+	if (!ptr2)
+		return r1;
+
+	ptr2++;
+	r2 = __handle_option(o, ptr2, data, 0, 0);
+
+	return r1 && r2;
+}
+
+int parse_cmd_option(const char *opt, const char *val,
+		     struct fio_option *options, void *data)
+{
+	struct fio_option *o;
+
+	o = find_option(options, opt);
+	if (!o) {
+		fprintf(stderr, "Bad option %s\n", opt);
+		return 1;
+	}
+
+	if (!handle_option(o, val, data))
+		return 0;
+
+	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
+	return 1;
+}
+
 int parse_option(const char *opt, struct fio_option *options, void *data)
 {
-	struct fio_option *o = find_option(options, opt);
+	struct fio_option *o;
 	char *pre, *post;
 	char tmp[64];
 
-	strcpy(tmp, opt);
+	strncpy(tmp, opt, sizeof(tmp) - 1);
 
 	pre = strchr(tmp, '=');
 	if (pre) {
@@ -278,5 +359,61 @@ int parse_option(const char *opt, struct fio_option *options, void *data)
 		return 1;
 	}
 
-	return handle_option(o, post, data);
+	if (!handle_option(o, post, data))
+		return 0;
+
+	fprintf(stderr, "fio: failed parsing %s\n", opt);
+	return 1;
+}
+
+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)",
+		"no argument (opt)",
+	};
+	int found = 0;
+
+	while (o->name) {
+		int match = !strcmp(name, o->name);
+
+		if (show_all || match) {
+			found = 1;
+			printf("%s: %s\n", o->name, o->help);
+			if (match) {
+				printf("type: %s\n", typehelp[o->type]);
+				if (o->def)
+					printf("default: %s\n", o->def);
+				else
+					printf("defaults: no default\n");
+			}
+		}
+
+		o++;
+	}
+
+	if (found)
+		return 0;
+
+	printf("No such command: %s\n", name);
+	return 1;
+}
+
+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++;
+	}
 }