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parse.c
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/*
* This file contains the ini and command liner parser main.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <float.h>
#include "compiler/compiler.h"
#include "parse.h"
#include "debug.h"
#include "log.h"
#include "options.h"
#include "optgroup.h"
#include "minmax.h"
#include "lib/ieee754.h"
#include "lib/pow2.h"
#ifdef CONFIG_ARITHMETIC
#include "y.tab.h"
#endif
static const char *opt_type_names[] = {
"OPT_INVALID",
"OPT_STR",
"OPT_STR_ULL",
"OPT_STR_MULTI",
"OPT_STR_VAL",
"OPT_STR_VAL_TIME",
"OPT_STR_STORE",
"OPT_RANGE",
"OPT_INT",
"OPT_ULL",
"OPT_BOOL",
"OPT_FLOAT_LIST",
"OPT_STR_SET",
"OPT_DEPRECATED",
"OPT_SOFT_DEPRECATED",
"OPT_UNSUPPORTED",
};
static const struct fio_option *__fio_options;
static int vp_cmp(const void *p1, const void *p2)
{
const struct value_pair *vp1 = p1;
const struct value_pair *vp2 = p2;
return strlen(vp2->ival) - strlen(vp1->ival);
}
static void posval_sort(const struct fio_option *o, struct value_pair *vpmap)
{
const struct value_pair *vp;
int entries;
memset(vpmap, 0, PARSE_MAX_VP * sizeof(struct value_pair));
for (entries = 0; entries < PARSE_MAX_VP; entries++) {
vp = &o->posval[entries];
if (!vp->ival || vp->ival[0] == '\0')
break;
memcpy(&vpmap[entries], vp, sizeof(*vp));
}
qsort(vpmap, entries, sizeof(struct value_pair), vp_cmp);
}
static void show_option_range(const struct fio_option *o,
ssize_t (*logger)(const char *format, ...))
{
if (o->type == FIO_OPT_FLOAT_LIST) {
const char *sep = "";
if (!o->minfp && !o->maxfp)
return;
logger("%20s: ", "range");
if (o->minfp != DBL_MIN) {
logger("min=%f", o->minfp);
sep = ", ";
}
if (o->maxfp != DBL_MAX)
logger("%smax=%f", sep, o->maxfp);
logger("\n");
} else if (!o->posval[0].ival) {
if (!o->minval && !o->maxval)
return;
logger("%20s: min=%d", "range", o->minval);
if (o->maxval)
logger(", max=%d", o->maxval);
logger("\n");
}
}
static void show_option_values(const struct fio_option *o)
{
int i;
for (i = 0; i < PARSE_MAX_VP; i++) {
const struct value_pair *vp = &o->posval[i];
if (!vp->ival)
continue;
log_info("%20s: %-10s", i == 0 ? "valid values" : "", vp->ival);
if (vp->help)
log_info(" %s", vp->help);
log_info("\n");
}
if (i)
log_info("\n");
}
static void show_option_help(const struct fio_option *o, int is_err)
{
const char *typehelp[] = {
[FIO_OPT_INVALID] = "invalid",
[FIO_OPT_STR] = "string (opt=bla)",
[FIO_OPT_STR_ULL] = "string (opt=bla)",
[FIO_OPT_STR_MULTI] = "string with possible k/m/g postfix (opt=4k)",
[FIO_OPT_STR_VAL] = "string (opt=bla)",
[FIO_OPT_STR_VAL_TIME] = "string with time postfix (opt=10s)",
[FIO_OPT_STR_STORE] = "string (opt=bla)",
[FIO_OPT_RANGE] = "one to three ranges (opt=1k-4k[,4k-8k[,1k-8k]])",
[FIO_OPT_INT] = "integer value (opt=100)",
[FIO_OPT_ULL] = "integer value (opt=100)",
[FIO_OPT_BOOL] = "boolean value (opt=1)",
[FIO_OPT_FLOAT_LIST] = "list of floating point values separated by ':' (opt=5.9:7.8)",
[FIO_OPT_STR_SET] = "empty or boolean value ([0|1])",
[FIO_OPT_DEPRECATED] = "deprecated",
[FIO_OPT_SOFT_DEPRECATED] = "deprecated",
[FIO_OPT_UNSUPPORTED] = "unsupported",
};
ssize_t (*logger)(const char *format, ...);
if (is_err)
logger = log_err;
else
logger = log_info;
if (o->alias)
logger("%20s: %s\n", "alias", o->alias);
logger("%20s: %s\n", "type", typehelp[o->type]);
logger("%20s: %s\n", "default", o->def ? o->def : "no default");
if (o->prof_name)
logger("%20s: only for profile '%s'\n", "valid", o->prof_name);
show_option_range(o, logger);
show_option_values(o);
}
static unsigned long long get_mult_time(const char *str, int len,
int is_seconds)
{
const char *p = str;
char *c;
unsigned long long mult = 1;
int i;
/*
* Go forward until we hit a non-digit, or +/- sign
*/
while ((p - str) <= len) {
if (!isdigit((int) *p) && (*p != '+') && (*p != '-'))
break;
p++;
}
if (!isalpha((int) *p)) {
if (is_seconds)
return 1000000UL;
else
return 1;
}
c = strdup(p);
for (i = 0; i < strlen(c); i++)
c[i] = tolower((unsigned char)c[i]);
if (!strncmp("us", c, 2) || !strncmp("usec", c, 4))
mult = 1;
else if (!strncmp("ms", c, 2) || !strncmp("msec", c, 4))
mult = 1000;
else if (!strcmp("s", c))
mult = 1000000;
else if (!strcmp("m", c))
mult = 60 * 1000000UL;
else if (!strcmp("h", c))
mult = 60 * 60 * 1000000UL;
else if (!strcmp("d", c))
mult = 24 * 60 * 60 * 1000000ULL;
free(c);
return mult;
}
static int is_separator(char c)
{
switch (c) {
case ':':
case '-':
case ',':
case '/':
return 1;
default:
return 0;
}
}
static unsigned long long __get_mult_bytes(const char *p, void *data,
int *percent)
{
unsigned int kb_base = fio_get_kb_base(data);
unsigned long long ret = 1;
unsigned int i, pow = 0, mult = kb_base;
char *c;
if (!p)
return 1;
c = strdup(p);
for (i = 0; i < strlen(c); i++) {
c[i] = tolower((unsigned char)c[i]);
if (is_separator(c[i])) {
c[i] = '\0';
break;
}
}
/* If kb_base is 1000, use true units.
* If kb_base is 1024, use opposite units.
*/
if (!strncmp("pib", c, 3)) {
pow = 5;
if (kb_base == 1000)
mult = 1024;
else if (kb_base == 1024)
mult = 1000;
} else if (!strncmp("tib", c, 3)) {
pow = 4;
if (kb_base == 1000)
mult = 1024;
else if (kb_base == 1024)
mult = 1000;
} else if (!strncmp("gib", c, 3)) {
pow = 3;
if (kb_base == 1000)
mult = 1024;
else if (kb_base == 1024)
mult = 1000;
} else if (!strncmp("mib", c, 3)) {
pow = 2;
if (kb_base == 1000)
mult = 1024;
else if (kb_base == 1024)
mult = 1000;
} else if (!strncmp("kib", c, 3)) {
pow = 1;
if (kb_base == 1000)
mult = 1024;
else if (kb_base == 1024)
mult = 1000;
} else if (!strncmp("p", c, 1) || !strncmp("pb", c, 2)) {
pow = 5;
} else if (!strncmp("t", c, 1) || !strncmp("tb", c, 2)) {
pow = 4;
} else if (!strncmp("g", c, 1) || !strncmp("gb", c, 2)) {
pow = 3;
} else if (!strncmp("m", c, 1) || !strncmp("mb", c, 2)) {
pow = 2;
} else if (!strncmp("k", c, 1) || !strncmp("kb", c, 2)) {
pow = 1;
} else if (!strncmp("%", c, 1)) {
*percent = 1;
free(c);
return ret;
}
while (pow--)
ret *= (unsigned long long) mult;
free(c);
return ret;
}
static unsigned long long get_mult_bytes(const char *str, int len, void *data,
int *percent)
{
const char *p = str;
int digit_seen = 0;
if (len < 2)
return __get_mult_bytes(str, data, percent);
/*
* Go forward until we hit a non-digit, or +/- sign
*/
while ((p - str) <= len) {
if (!isdigit((int) *p) &&
(((*p != '+') && (*p != '-')) || digit_seen))
break;
digit_seen |= isdigit((int) *p);
p++;
}
if (!isalpha((int) *p) && (*p != '%'))
p = NULL;
return __get_mult_bytes(p, data, percent);
}
extern int evaluate_arithmetic_expression(const char *buffer, long long *ival,
double *dval, double implied_units,
int is_time);
/*
* Convert string into a floating number. Return 1 for success and 0 otherwise.
*/
int str_to_float(const char *str, double *val, int is_time)
{
#ifdef CONFIG_ARITHMETIC
int rc;
long long ival;
double dval;
if (str[0] == '(') {
rc = evaluate_arithmetic_expression(str, &ival, &dval, 1.0, is_time);
if (!rc) {
*val = dval;
return 1;
}
}
#endif
return 1 == sscanf(str, "%lf", val);
}
/*
* convert string into decimal value, noting any size suffix
*/
int str_to_decimal(const char *str, long long *val, int kilo, void *data,
int is_seconds, int is_time)
{
int len, base;
int rc = 1;
#ifdef CONFIG_ARITHMETIC
long long ival;
double dval;
double implied_units = 1.0;
#endif
len = strlen(str);
if (!len)
return 1;
#ifdef CONFIG_ARITHMETIC
if (is_seconds)
implied_units = 1000000.0;
if (str[0] == '(')
rc = evaluate_arithmetic_expression(str, &ival, &dval, implied_units, is_time);
if (str[0] == '(' && !rc) {
if (!kilo && is_seconds)
*val = ival / 1000000LL;
else
*val = ival;
}
#endif
if (rc == 1) {
char *endptr;
if (strstr(str, "0x") || strstr(str, "0X"))
base = 16;
else
base = 10;
*val = strtoll(str, &endptr, base);
if (*val == 0 && endptr == str)
return 1;
if (*val == LONG_MAX && errno == ERANGE)
return 1;
}
if (kilo) {
unsigned long long mult;
int perc = 0;
mult = get_mult_bytes(str, len, data, &perc);
if (perc)
*val = -1ULL - *val;
else
*val *= mult;
} else
*val *= get_mult_time(str, len, is_seconds);
return 0;
}
int check_str_bytes(const char *p, long long *val, void *data)
{
return str_to_decimal(p, val, 1, data, 0, 0);
}
int check_str_time(const char *p, long long *val, int is_seconds)
{
return str_to_decimal(p, val, 0, NULL, is_seconds, 1);
}
void strip_blank_front(char **p)
{
char *s = *p;
if (!strlen(s))
return;
while (isspace((int) *s))
s++;
*p = s;
}
void strip_blank_end(char *p)
{
char *start = p, *s;
if (!strlen(p))
return;
s = strchr(p, ';');
if (s)
*s = '\0';
s = strchr(p, '#');
if (s)
*s = '\0';
if (s)
p = s;
s = p + strlen(p);
while ((isspace((int) *s) || iscntrl((int) *s)) && (s > start))
s--;
*(s + 1) = '\0';
}
static int check_range_bytes(const char *str, long long *val, void *data)
{
long long __val;
if (!str_to_decimal(str, &__val, 1, data, 0, 0)) {
*val = __val;
return 0;
}
return 1;
}
static int check_int(const char *p, int *val)
{
if (!strlen(p))
return 1;
if (strstr(p, "0x") || strstr(p, "0X")) {
if (sscanf(p, "%x", val) == 1)
return 0;
} else {
if (sscanf(p, "%u", val) == 1)
return 0;
}
return 1;
}
static size_t opt_len(const char *str)
{
char *postfix;
postfix = strchr(str, ':');
if (!postfix)
return strlen(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, o) \
do { \
ptr = td_var((data), (o), (off)); \
if ((or)) \
*ptr |= (val); \
else \
*ptr = (val); \
} while (0)
static const char *opt_type_name(const struct fio_option *o)
{
compiletime_assert(ARRAY_SIZE(opt_type_names) - 1 == FIO_OPT_UNSUPPORTED,
"opt_type_names[] index");
if (o->type <= FIO_OPT_UNSUPPORTED)
return opt_type_names[o->type];
return "OPT_UNKNOWN?";
}
static bool val_too_large(const struct fio_option *o, unsigned long long val,
bool is_uint)
{
if (!o->maxval)
return false;
if (is_uint) {
if ((int) val < 0)
return (int) val > (int) o->maxval;
return (unsigned int) val > o->maxval;
}
return val > o->maxval;
}
static bool val_too_small(const struct fio_option *o, unsigned long long val,
bool is_uint)
{
if (!o->minval)
return false;
if (is_uint)
return (int) val < o->minval;
return val < o->minval;
}
static int __handle_option(const struct fio_option *o, const char *ptr,
void *data, int first, int more, int curr)
{
int il=0, *ilp;
fio_fp64_t *flp;
long long ull, *ullp;
long ul2;
long long ull1, ull2;
double uf;
char **cp = NULL;
int ret = 0, is_time = 0;
const struct value_pair *vp;
struct value_pair posval[PARSE_MAX_VP];
int i, all_skipped = 1;
dprint(FD_PARSE, "__handle_option=%s, type=%s, ptr=%s\n", o->name,
opt_type_name(o), ptr);
if (!ptr && o->type != FIO_OPT_STR_SET && o->type != FIO_OPT_STR) {
log_err("Option %s requires an argument\n", o->name);
return 1;
}
switch (o->type) {
case FIO_OPT_STR:
case FIO_OPT_STR_ULL:
case FIO_OPT_STR_MULTI: {
fio_opt_str_fn *fn = o->cb;
posval_sort(o, posval);
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 (!ptr)
break;
if (!strncmp(vp->ival, ptr, str_match_len(vp, ptr))) {
ret = 0;
if (!o->off1)
continue;
if (o->type == FIO_OPT_STR_ULL)
val_store(ullp, vp->oval, o->off1, vp->orval, data, o);
else
val_store(ilp, vp->oval, o->off1, vp->orval, data, o);
continue;
}
}
if (ret && !all_skipped)
show_option_values(o);
else if (fn)
ret = fn(data, ptr);
break;
}
case FIO_OPT_STR_VAL_TIME:
is_time = 1;
fallthrough;
case FIO_OPT_ULL:
case FIO_OPT_INT:
case FIO_OPT_STR_VAL: {
fio_opt_str_val_fn *fn = o->cb;
char tmp[128], *p;
if (!is_time && o->is_time)
is_time = o->is_time;
snprintf(tmp, sizeof(tmp), "%s", ptr);
p = strchr(tmp, ',');
if (p)
*p = '\0';
if (is_time)
ret = check_str_time(tmp, &ull, o->is_seconds);
else
ret = check_str_bytes(tmp, &ull, data);
dprint(FD_PARSE, " ret=%d, out=%llu\n", ret, ull);
if (ret)
break;
if (o->pow2 && !is_power_of_2(ull)) {
log_err("%s: must be a power-of-2\n", o->name);
return 1;
}
if (val_too_large(o, ull, o->type == FIO_OPT_INT)) {
log_err("%s: max value out of range: %llu"
" (%llu max)\n", o->name, ull, o->maxval);
return 1;
}
if (val_too_small(o, ull, o->type == FIO_OPT_INT)) {
log_err("%s: min value out of range: %lld"
" (%d min)\n", o->name, ull, o->minval);
return 1;
}
if (o->posval[0].ival) {
posval_sort(o, posval);
ret = 1;
for (i = 0; i < PARSE_MAX_VP; i++) {
vp = &posval[i];
if (!vp->ival || vp->ival[0] == '\0')
continue;
if (vp->oval == ull) {
ret = 0;
break;
}
}
if (ret) {
log_err("fio: value %llu not allowed:\n", ull);
show_option_values(o);
return 1;
}
}
if (fn)
ret = fn(data, &ull);
else {
if (o->type == FIO_OPT_INT) {
if (first)
val_store(ilp, ull, o->off1, 0, data, o);
if (curr == 1) {
if (o->off2)
val_store(ilp, ull, o->off2, 0, data, o);
}
if (curr == 2) {
if (o->off3)
val_store(ilp, ull, o->off3, 0, data, o);
}
if (!more) {
if (curr < 1) {
if (o->off2)
val_store(ilp, ull, o->off2, 0, data, o);
}
if (curr < 2) {
if (o->off3)
val_store(ilp, ull, o->off3, 0, data, o);
}
}
} else if (o->type == FIO_OPT_ULL) {
if (first)
val_store(ullp, ull, o->off1, 0, data, o);
if (curr == 1) {
if (o->off2)
val_store(ullp, ull, o->off2, 0, data, o);
}
if (curr == 2) {
if (o->off3)
val_store(ullp, ull, o->off3, 0, data, o);
}
if (!more) {
if (curr < 1) {
if (o->off2)
val_store(ullp, ull, o->off2, 0, data, o);
}
if (curr < 2) {
if (o->off3)
val_store(ullp, ull, o->off3, 0, data, o);
}
}
} else {
if (first)
val_store(ullp, ull, o->off1, 0, data, o);
if (!more) {
if (o->off2)
val_store(ullp, ull, o->off2, 0, data, o);
}
}
}
break;
}
case FIO_OPT_FLOAT_LIST: {
char *cp2;
if (first) {
/*
** Initialize precision to 0 and zero out list
** in case specified list is shorter than default
*/
if (o->off2) {
ul2 = 0;
ilp = td_var(data, o, o->off2);
*ilp = ul2;
}
flp = td_var(data, o, 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, 0)) { /* this breaks if we ever have lists of times */
log_err("not a floating point value: %s\n", ptr);
return 1;
}
if (o->minfp || o->maxfp) {
if (uf > o->maxfp) {
log_err("value out of range: %f"
" (range max: %f)\n", uf, o->maxfp);
return 1;
}
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, o->off1);
flp[curr].u.f = uf;
dprint(FD_PARSE, " out=%f\n", 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++;
if (o->off2) {
ilp = td_var(data, o, o->off2);
if (len > *ilp)
*ilp = len;
}
}
break;
}
case FIO_OPT_STR_STORE: {
fio_opt_str_fn *fn = o->cb;
if (!strlen(ptr))
return 1;
if (o->off1) {
cp = td_var(data, o, o->off1);
*cp = strdup(ptr);
}
if (fn)
ret = fn(data, ptr);
else if (o->posval[0].ival) {
posval_sort(o, posval);
ret = 1;
for (i = 0; i < PARSE_MAX_VP; i++) {
vp = &posval[i];
if (!vp->ival || vp->ival[0] == '\0' || !cp)
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 (!all_skipped) {
if (ret && !*cp)
show_option_values(o);
else if (ret && *cp)
ret = 0;
else if (fn && ptr)
ret = fn(data, ptr);
}
break;
}
case FIO_OPT_RANGE: {
char tmp[128];
char *p1, *p2;
snprintf(tmp, sizeof(tmp), "%s", ptr);
/* Handle bsrange with separate read,write values: */
p1 = strchr(tmp, ',');
if (p1)
*p1 = '\0';
p1 = strchr(tmp, '-');
if (!p1) {
p1 = strchr(tmp, ':');
if (!p1) {
ret = 1;
break;
}
}
p2 = p1 + 1;
*p1 = '\0';
p1 = tmp;
ret = 1;
if (!check_range_bytes(p1, &ull1, data) &&
!check_range_bytes(p2, &ull2, data)) {
ret = 0;
if (ull1 > ull2) {
unsigned long long foo = ull1;
ull1 = ull2;
ull2 = foo;
}
if (first) {
val_store(ullp, ull1, o->off1, 0, data, o);
val_store(ullp, ull2, o->off2, 0, data, o);
}
if (curr == 1) {
if (o->off3 && o->off4) {
val_store(ullp, ull1, o->off3, 0, data, o);
val_store(ullp, ull2, o->off4, 0, data, o);
}
}
if (curr == 2) {
if (o->off5 && o->off6) {
val_store(ullp, ull1, o->off5, 0, data, o);
val_store(ullp, ull2, o->off6, 0, data, o);
}
}
if (!more) {
if (curr < 1) {
if (o->off3 && o->off4) {
val_store(ullp, ull1, o->off3, 0, data, o);
val_store(ullp, ull2, o->off4, 0, data, o);
}
}
if (curr < 2) {
if (o->off5 && o->off6) {
val_store(ullp, ull1, o->off5, 0, data, o);
val_store(ullp, ull2, o->off6, 0, data, o);
}
}
}
}
break;
}
case FIO_OPT_BOOL:
case FIO_OPT_STR_SET: {
fio_opt_int_fn *fn = o->cb;
if (ptr)
ret = check_int(ptr, &il);
else if (o->type == FIO_OPT_BOOL)
ret = 1;
else
il = 1;
dprint(FD_PARSE, " ret=%d, out=%d\n", ret, il);
if (ret)
break;
if (o->maxval && il > (int) o->maxval) {
log_err("max value out of range: %d (%llu max)\n",
il, o->maxval);
return 1;
}
if (o->minval && il < o->minval) {
log_err("min value out of range: %d (%d min)\n",
il, o->minval);
return 1;
}
if (o->neg)
il = !il;
if (fn)
ret = fn(data, &il);
else {
if (first)
val_store(ilp, il, o->off1, 0, data, o);
if (!more) {
if (o->off2)
val_store(ilp, il, o->off2, 0, data, o);
}
}
break;
}
case FIO_OPT_DEPRECATED:
ret = 1;
fallthrough;
case FIO_OPT_SOFT_DEPRECATED:
log_info("Option %s is deprecated\n", o->name);
break;
default:
log_err("Bad option type %u\n", o->type);
ret = 1;
}
if (ret)
return ret;
if (o->verify) {
ret = o->verify(o, data);
if (ret) {
log_err("Correct format for offending option\n");
log_err("%20s: %s\n", o->name, o->help);
show_option_help(o, 1);
}
}
return ret;
}
static int handle_option(const struct fio_option *o, const char *__ptr,
void *data)
{
char *o_ptr, *ptr, *ptr2;
int ret, done;
dprint(FD_PARSE, "handle_option=%s, ptr=%s\n", o->name, __ptr);
o_ptr = ptr = NULL;
if (__ptr)
o_ptr = ptr = strdup(__ptr);
/*
* See if we have another set of parameters, hidden after a comma.
* Do this before parsing this round, to check if we should
* copy set 1 options to set 2.
*/
done = 0;
ret = 1;
do {
int __ret;
ptr2 = NULL;
if (ptr &&
(o->type != FIO_OPT_STR_STORE) &&
(o->type != FIO_OPT_STR) &&
(o->type != FIO_OPT_STR_ULL) &&
(o->type != FIO_OPT_FLOAT_LIST)) {
ptr2 = strchr(ptr, ',');
if (ptr2 && *(ptr2 + 1) == '\0')
*ptr2 = '\0';
if (o->type != FIO_OPT_STR_MULTI && o->type != FIO_OPT_RANGE) {
if (!ptr2)