[fio.git] / parse.c

/*
 * This file contains the ini and command liner parser main.
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <limits.h>

#include "parse.h"

static unsigned long get_mult_time(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:
			return 1;
	}
}

static unsigned long get_mult_bytes(char c)
{
	switch (c) {
		case 'k':
		case 'K':
			return 1024;
		case 'm':
		case 'M':
			return 1024 * 1024;
		case 'g':
		case 'G':
			return 1024 * 1024 * 1024;
		default:
			return 1;
	}
}

/*
 * convert string into decimal value, noting any size suffix
 */
static int str_to_decimal(const char *str, unsigned long long *val, int kilo)
{
	int len;

	len = strlen(str);
	if (!len)
		return 1;

	*val = strtoul(str, NULL, 10);
	if (*val == ULONG_MAX && errno == ERANGE)
		return 1;

	if (kilo)
		*val *= get_mult_bytes(str[len - 1]);
	else
		*val *= get_mult_time(str[len - 1]);

	return 0;
}

static int check_str_bytes(const char *p, unsigned long long *val)
{
	return str_to_decimal(p, val, 1);
}

static int check_str_time(const char *p, unsigned long long *val)
{
	return str_to_decimal(p, val, 0);
}

void strip_blank_front(char **p)
{
	char *s = *p;

	while (isspace(*s))
		s++;
}

void strip_blank_end(char *p)
{
	char *s = p + strlen(p) - 1;

	while (isspace(*s) || iscntrl(*s))
		s--;

	*(s + 1) = '\0';
}

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;
	}

	if (sscanf(str, "%lu", val) == 1)
		return 0;

	return 1;
}

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;
}

static struct fio_option *find_option(struct fio_option *options,
				      const char *opt)
{
	struct fio_option *o = &options[0];

	while (o->name) {
		if (!strcmp(o->name, opt))
			return o;

		o++;
	}

	return NULL;
}

#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;
	char **cp;
	int ret = 0, is_time = 0;

	switch (o->type) {
	case FIO_OPT_STR: {
		fio_opt_str_fn *fn = o->cb;

		ret = fn(data, ptr);
		break;
	}
	case FIO_OPT_STR_VAL_TIME:
		is_time = 1;
	case FIO_OPT_STR_VAL:
	case FIO_OPT_STR_VAL_INT: {
		fio_opt_str_val_fn *fn = o->cb;

		if (is_time)
			ret = check_str_time(ptr, &ull);
		else
			ret = check_str_bytes(ptr, &ull);

		if (ret)
			break;

		if (o->max_val && ull > o->max_val)
			ull = o->max_val;

		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);
			} else {
				if (first)
					val_store(ullp, ull, o->off1, data);
				if (!more && o->off2)
					val_store(ullp, ull, o->off2, data);
			}
		}
		break;
	}
	case FIO_OPT_STR_STORE:
		cp = td_var(data, o->off1);
		*cp = strdup(ptr);
		break;
	case FIO_OPT_RANGE: {
		char tmp[128];
		char *p1, *p2;

		strncpy(tmp, ptr, sizeof(tmp) - 1);

		p1 = strchr(tmp, '-');
		if (!p1) {
			ret = 1;
			break;
		}

		p2 = p1 + 1;
		*p1 = '\0';
		p1 = tmp;

		ret = 1;
		if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
			ret = 0;
			if (ul1 > ul2) {
				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: {
		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 (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);
		}
		break;
	}
	case FIO_OPT_STR_SET: {
		fio_opt_str_set_fn *fn = o->cb;

		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);
		}
		break;
	}
	default:
		fprintf(stderr, "Bad option type %d\n", o->type);
		ret = 1;
	}

	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;
	char *pre, *post;
	char tmp[64];

	strncpy(tmp, opt, sizeof(tmp) - 1);

	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;
	}

	if (!o) {
		fprintf(stderr, "Bad option %s\n", tmp);
		return 1;
	}

	if (!handle_option(o, post, data))
		return 0;

	fprintf(stderr, "fio: failed parsing %s\n", opt);
	return 1;
}
Commit	Line	Data
	1	/*
	2	* This file contains the ini and command liner parser main.
	3	*/
	4	#include <stdio.h>
	5	#include <stdlib.h>
	6	#include <unistd.h>
	7	#include <ctype.h>
	8	#include <string.h>
	9	#include <errno.h>
	10	#include <limits.h>
	11
	12	#include "parse.h"
	13
	14	static unsigned long get_mult_time(char c)
	15	{
	16	switch (c) {
	17	case 'm':
	18	case 'M':
	19	return 60;
	20	case 'h':
	21	case 'H':
	22	return 60 * 60;
	23	case 'd':
	24	case 'D':
	25	return 24 * 60 * 60;
	26	default:
	27	return 1;
	28	}
	29	}
	30
	31	static unsigned long get_mult_bytes(char c)
	32	{
	33	switch (c) {
	34	case 'k':
	35	case 'K':
	36	return 1024;
	37	case 'm':
	38	case 'M':
	39	return 1024 * 1024;
	40	case 'g':
	41	case 'G':
	42	return 1024 * 1024 * 1024;
	43	default:
	44	return 1;
	45	}
	46	}
	47
	48	/*
	49	* convert string into decimal value, noting any size suffix
	50	*/
	51	static int str_to_decimal(const char str, unsigned long long val, int kilo)
	52	{
	53	int len;
	54
	55	len = strlen(str);
	56	if (!len)
	57	return 1;
	58
	59	*val = strtoul(str, NULL, 10);
	60	if (*val == ULONG_MAX && errno == ERANGE)
	61	return 1;
	62
	63	if (kilo)
	64	val = get_mult_bytes(str[len - 1]);
	65	else
	66	val = get_mult_time(str[len - 1]);
	67
	68	return 0;
	69	}
	70
	71	static int check_str_bytes(const char p, unsigned long long val)
	72	{
	73	return str_to_decimal(p, val, 1);
	74	}
	75
	76	static int check_str_time(const char p, unsigned long long val)
	77	{
	78	return str_to_decimal(p, val, 0);
	79	}
	80
	81	void strip_blank_front(char **p)
	82	{
	83	char s = p;
	84
	85	while (isspace(*s))
	86	s++;
	87	}
	88
	89	void strip_blank_end(char *p)
	90	{
	91	char *s = p + strlen(p) - 1;
	92
	93	while (isspace(s) \|\| iscntrl(s))
	94	s--;
	95
	96	*(s + 1) = '\0';
	97	}
	98
	99	static int check_range_bytes(const char str, unsigned long val)
	100	{
	101	char suffix;
	102
	103	if (!strlen(str))
	104	return 1;
	105
	106	if (sscanf(str, "%lu%c", val, &suffix) == 2) {
	107	val = get_mult_bytes(suffix);
	108	return 0;
	109	}
	110
	111	if (sscanf(str, "%lu", val) == 1)
	112	return 0;
	113
	114	return 1;
	115	}
	116
	117	static int check_int(const char p, unsigned int val)
	118	{
	119	if (!strlen(p))
	120	return 1;
	121	if (sscanf(p, "%u", val) == 1)
	122	return 0;
	123
	124	return 1;
	125	}
	126
	127	static struct fio_option find_option(struct fio_option options,
	128	const char *opt)
	129	{
	130	struct fio_option *o = &options[0];
	131
	132	while (o->name) {
	133	if (!strcmp(o->name, opt))
	134	return o;
	135
	136	o++;
	137	}
	138
	139	return NULL;
	140	}
	141
	142	#define val_store(ptr, val, off, data) \
	143	do { \
	144	ptr = td_var((data), (off)); \
	145	*ptr = (val); \
	146	} while (0)
	147
	148	static int __handle_option(struct fio_option o, const char ptr, void *data,
	149	int first, int more)
	150	{
	151	unsigned int il, *ilp;
	152	unsigned long long ull, *ullp;
	153	unsigned long ul1, ul2;
	154	char **cp;
	155	int ret = 0, is_time = 0;
	156
	157	switch (o->type) {
	158	case FIO_OPT_STR: {
	159	fio_opt_str_fn *fn = o->cb;
	160
	161	ret = fn(data, ptr);
	162	break;
	163	}
	164	case FIO_OPT_STR_VAL_TIME:
	165	is_time = 1;
	166	case FIO_OPT_STR_VAL:
	167	case FIO_OPT_STR_VAL_INT: {
	168	fio_opt_str_val_fn *fn = o->cb;
	169
	170	if (is_time)
	171	ret = check_str_time(ptr, &ull);
	172	else
	173	ret = check_str_bytes(ptr, &ull);
	174
	175	if (ret)
	176	break;
	177
	178	if (o->max_val && ull > o->max_val)
	179	ull = o->max_val;
	180
	181	if (fn)
	182	ret = fn(data, &ull);
	183	else {
	184	if (o->type == FIO_OPT_STR_VAL_INT) {
	185	if (first)
	186	val_store(ilp, ull, o->off1, data);
	187	if (!more && o->off2)
	188	val_store(ilp, ull, o->off2, data);
	189	} else {
	190	if (first)
	191	val_store(ullp, ull, o->off1, data);
	192	if (!more && o->off2)
	193	val_store(ullp, ull, o->off2, data);
	194	}
	195	}
	196	break;
	197	}
	198	case FIO_OPT_STR_STORE:
	199	cp = td_var(data, o->off1);
	200	*cp = strdup(ptr);
	201	break;
	202	case FIO_OPT_RANGE: {
	203	char tmp[128];
	204	char p1, p2;
	205
	206	strncpy(tmp, ptr, sizeof(tmp) - 1);
	207
	208	p1 = strchr(tmp, '-');
	209	if (!p1) {
	210	ret = 1;
	211	break;
	212	}
	213
	214	p2 = p1 + 1;
	215	*p1 = '\0';
	216	p1 = tmp;
	217
	218	ret = 1;
	219	if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
	220	ret = 0;
	221	if (ul1 > ul2) {
	222	unsigned long foo = ul1;
	223
	224	ul1 = ul2;
	225	ul2 = foo;
	226	}
	227
	228	if (first) {
	229	val_store(ilp, ul1, o->off1, data);
	230	val_store(ilp, ul2, o->off2, data);
	231	}
	232	if (!more && o->off3 && o->off4) {
	233	val_store(ilp, ul1, o->off3, data);
	234	val_store(ilp, ul2, o->off4, data);
	235	}
	236	}
	237
	238	break;
	239	}
	240	case FIO_OPT_INT: {
	241	fio_opt_int_fn *fn = o->cb;
	242
	243	ret = check_int(ptr, &il);
	244	if (ret)
	245	break;
	246
	247	if (o->max_val && il > o->max_val)
	248	il = o->max_val;
	249
	250	if (fn)
	251	ret = fn(data, &il);
	252	else {
	253	if (first)
	254	val_store(ilp, il, o->off1, data);
	255	if (!more && o->off2)
	256	val_store(ilp, il, o->off2, data);
	257	}
	258	break;
	259	}
	260	case FIO_OPT_STR_SET: {
	261	fio_opt_str_set_fn *fn = o->cb;
	262
	263	if (fn)
	264	ret = fn(data);
	265	else {
	266	if (first)
	267	val_store(ilp, 1, o->off1, data);
	268	if (!more && o->off2)
	269	val_store(ilp, 1, o->off2, data);
	270	}
	271	break;
	272	}
	273	default:
	274	fprintf(stderr, "Bad option type %d\n", o->type);
	275	ret = 1;
	276	}
	277
	278	return ret;
	279	}
	280
	281	static int handle_option(struct fio_option o, const char ptr, void *data)
	282	{
	283	const char *ptr2 = NULL;
	284	int r1, r2;
	285
	286	/*
	287	* See if we have a second set of parameters, hidden after a comma.
	288	* Do this before parsing the first round, to check if we should
	289	* copy set 1 options to set 2.
	290	*/
	291	if (ptr)
	292	ptr2 = strchr(ptr, ',');
	293
	294	/*
	295	* Don't return early if parsing the first option fails - if
	296	* we are doing multiple arguments, we can allow the first one
	297	* being empty.
	298	*/
	299	r1 = __handle_option(o, ptr, data, 1, !!ptr2);
	300
	301	if (!ptr2)
	302	return r1;
	303
	304	ptr2++;
	305	r2 = __handle_option(o, ptr2, data, 0, 0);
	306
	307	return r1 && r2;
	308	}
	309
	310	int parse_cmd_option(const char opt, const char val,
	311	struct fio_option options, void data)
	312	{
	313	struct fio_option *o;
	314
	315	o = find_option(options, opt);
	316	if (!o) {
	317	fprintf(stderr, "Bad option %s\n", opt);
	318	return 1;
	319	}
	320
	321	if (!handle_option(o, val, data))
	322	return 0;
	323
	324	fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
	325	return 1;
	326	}
	327
	328	int parse_option(const char opt, struct fio_option options, void *data)
	329	{
	330	struct fio_option *o;
	331	char pre, post;
	332	char tmp[64];
	333
	334	strncpy(tmp, opt, sizeof(tmp) - 1);
	335
	336	pre = strchr(tmp, '=');
	337	if (pre) {
	338	post = pre;
	339	*pre = '\0';
	340	pre = tmp;
	341	post++;
	342	o = find_option(options, pre);
	343	} else {
	344	o = find_option(options, tmp);
	345	post = NULL;
	346	}
	347
	348	if (!o) {
	349	fprintf(stderr, "Bad option %s\n", tmp);
	350	return 1;
	351	}
	352
	353	if (!handle_option(o, post, data))
	354	return 0;
	355
	356	fprintf(stderr, "fio: failed parsing %s\n", opt);
	357	return 1;
	358	}