2015-08-21 07:04:50 +00:00
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/*
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* Simple C functions to supplement the C library
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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2018-02-19 06:27:52 +00:00
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#include "qemu/osdep.h"
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2015-08-21 07:04:50 +00:00
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|
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#include "qemu-common.h"
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|
|
#include "qemu/host-utils.h"
|
2018-02-22 14:24:12 +00:00
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|
|
#include "qemu/cutils.h"
|
2015-08-21 07:04:50 +00:00
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|
|
#include <math.h>
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|
|
2018-02-15 13:21:38 +00:00
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|
|
void strpadcpy(char *buf, int buf_size, const char *str, char pad)
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|
|
|
{
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|
|
int len = qemu_strnlen(str, buf_size);
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|
|
memcpy(buf, str, len);
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|
|
memset(buf + len, pad, buf_size - len);
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|
|
}
|
2015-08-21 07:04:50 +00:00
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|
|
void pstrcpy(char *buf, int buf_size, const char *str)
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|
|
{
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|
|
int c;
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|
|
char *q = buf;
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|
|
if (buf_size <= 0)
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|
|
return;
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|
|
for(;;) {
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|
|
c = *str++;
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|
|
if (c == 0 || q >= buf + buf_size - 1)
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|
|
break;
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|
|
*q++ = c;
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|
|
|
}
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|
|
*q = '\0';
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|
|
|
}
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|
|
/* strcat and truncate. */
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|
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char *pstrcat(char *buf, int buf_size, const char *s)
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|
|
{
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|
|
int len;
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|
|
len = strlen(buf);
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|
|
if (len < buf_size)
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|
|
pstrcpy(buf + len, buf_size - len, s);
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|
|
return buf;
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|
|
}
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|
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int strstart(const char *str, const char *val, const char **ptr)
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|
|
{
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|
|
const char *p, *q;
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|
|
p = str;
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|
|
q = val;
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|
|
while (*q != '\0') {
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|
|
if (*p != *q)
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|
|
return 0;
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|
|
p++;
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|
|
q++;
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|
|
|
}
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|
|
if (ptr)
|
|
|
|
*ptr = p;
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|
|
return 1;
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|
|
|
}
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|
2018-02-15 13:29:50 +00:00
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|
|
int stristart(const char *str, const char *val, const char **ptr)
|
|
|
|
{
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|
|
const char *p, *q;
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|
|
p = str;
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|
|
q = val;
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|
|
|
while (*q != '\0') {
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|
|
|
if (qemu_toupper(*p) != qemu_toupper(*q))
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|
|
return 0;
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|
|
p++;
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|
|
q++;
|
|
|
|
}
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|
|
|
if (ptr)
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|
|
*ptr = p;
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|
|
return 1;
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|
|
|
}
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|
|
/* XXX: use host strnlen if available ? */
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|
|
int qemu_strnlen(const char *s, int max_len)
|
|
|
|
{
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|
|
|
int i;
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|
|
|
|
|
|
for(i = 0; i < max_len; i++) {
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|
|
if (s[i] == '\0') {
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|
|
break;
|
|
|
|
}
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|
|
|
}
|
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|
|
return i;
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|
|
|
}
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|
|
char *qemu_strsep(char **input, const char *delim)
|
|
|
|
{
|
|
|
|
char *result = *input;
|
|
|
|
if (result != NULL) {
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|
|
char *p;
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|
|
for (p = result; *p != '\0'; p++) {
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|
|
|
if (strchr(delim, *p)) {
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|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (*p == '\0') {
|
|
|
|
*input = NULL;
|
|
|
|
} else {
|
|
|
|
*p = '\0';
|
|
|
|
*input = p + 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2015-08-21 07:04:50 +00:00
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|
|
static int64_t suffix_mul(char suffix, int64_t unit)
|
|
|
|
{
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|
|
|
switch (qemu_toupper(suffix)) {
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_B:
|
2015-08-21 07:04:50 +00:00
|
|
|
return 1;
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_KB:
|
2015-08-21 07:04:50 +00:00
|
|
|
return unit;
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_MB:
|
2015-08-21 07:04:50 +00:00
|
|
|
return unit * unit;
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_GB:
|
2015-08-21 07:04:50 +00:00
|
|
|
return unit * unit * unit;
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_TB:
|
2015-08-21 07:04:50 +00:00
|
|
|
return unit * unit * unit * unit;
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_PB:
|
2015-08-21 07:04:50 +00:00
|
|
|
return unit * unit * unit * unit * unit;
|
2018-02-22 05:16:43 +00:00
|
|
|
case QEMU_STRTOSZ_DEFSUFFIX_EB:
|
2015-08-21 07:04:50 +00:00
|
|
|
return unit * unit * unit * unit * unit * unit;
|
|
|
|
}
|
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|
|
return -1;
|
|
|
|
}
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|
|
|
/*
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|
|
* Convert string to bytes, allowing either B/b for bytes, K/k for KB,
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|
* M/m for MB, G/g for GB or T/t for TB. End pointer will be returned
|
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|
* in *end, if not NULL. Return -ERANGE on overflow, Return -EINVAL on
|
|
|
|
* other error.
|
|
|
|
*/
|
2018-02-22 05:16:43 +00:00
|
|
|
int64_t qemu_strtosz_suffix_unit(const char *nptr, char **end,
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|
|
const char default_suffix, int64_t unit)
|
2015-08-21 07:04:50 +00:00
|
|
|
{
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|
|
|
int64_t retval = -EINVAL;
|
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|
|
char *endptr;
|
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|
|
unsigned char c;
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|
|
int mul_required = 0;
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|
|
double val, mul, integral, fraction;
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|
|
|
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|
|
errno = 0;
|
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|
|
val = strtod(nptr, &endptr);
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|
|
if (isnan(val) || endptr == nptr || errno != 0) {
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|
|
goto fail;
|
|
|
|
}
|
|
|
|
fraction = modf(val, &integral);
|
|
|
|
if (fraction != 0) {
|
|
|
|
mul_required = 1;
|
|
|
|
}
|
|
|
|
c = *endptr;
|
2017-01-19 11:50:28 +00:00
|
|
|
mul = (double)suffix_mul(c, unit);
|
2015-08-21 07:04:50 +00:00
|
|
|
if (mul >= 0) {
|
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|
|
endptr++;
|
|
|
|
} else {
|
2017-01-19 11:50:28 +00:00
|
|
|
mul = (double)suffix_mul(default_suffix, unit);
|
2015-08-21 07:04:50 +00:00
|
|
|
assert(mul >= 0);
|
|
|
|
}
|
|
|
|
if (mul == 1 && mul_required) {
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if ((val * mul >= INT64_MAX) || val < 0) {
|
|
|
|
retval = -ERANGE;
|
|
|
|
goto fail;
|
|
|
|
}
|
2017-01-19 11:50:28 +00:00
|
|
|
retval = (int64_t)(val * mul);
|
2015-08-21 07:04:50 +00:00
|
|
|
|
|
|
|
fail:
|
|
|
|
if (end) {
|
|
|
|
*end = endptr;
|
|
|
|
}
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2018-02-22 05:16:43 +00:00
|
|
|
int64_t qemu_strtosz_suffix(const char *nptr, char **end,
|
|
|
|
const char default_suffix)
|
2015-08-21 07:04:50 +00:00
|
|
|
{
|
2018-02-22 05:16:43 +00:00
|
|
|
return qemu_strtosz_suffix_unit(nptr, end, default_suffix, 1024);
|
2015-08-21 07:04:50 +00:00
|
|
|
}
|
|
|
|
|
2018-02-22 05:16:43 +00:00
|
|
|
int64_t qemu_strtosz(const char *nptr, char **end)
|
2015-08-21 07:04:50 +00:00
|
|
|
{
|
2018-02-22 05:16:43 +00:00
|
|
|
return qemu_strtosz_suffix(nptr, end, QEMU_STRTOSZ_DEFSUFFIX_MB);
|
2015-08-21 07:04:50 +00:00
|
|
|
}
|
2018-02-27 12:53:17 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Helper function for qemu_strto*l() functions.
|
|
|
|
*/
|
|
|
|
static int check_strtox_error(const char *p, char *endptr, const char **next,
|
|
|
|
int err)
|
|
|
|
{
|
|
|
|
/* If no conversion was performed, prefer BSD behavior over glibc
|
|
|
|
* behavior.
|
|
|
|
*/
|
|
|
|
if (err == 0 && endptr == p) {
|
|
|
|
err = EINVAL;
|
|
|
|
}
|
|
|
|
if (!next && *endptr) {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (next) {
|
|
|
|
*next = endptr;
|
|
|
|
}
|
|
|
|
return -err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* QEMU wrappers for strtol(), strtoll(), strtoul(), strotull() C functions.
|
|
|
|
*
|
|
|
|
* Convert ASCII string @nptr to a long integer value
|
|
|
|
* from the given @base. Parameters @nptr, @endptr, @base
|
|
|
|
* follows same semantics as strtol() C function.
|
|
|
|
*
|
|
|
|
* Unlike from strtol() function, if @endptr is not NULL, this
|
|
|
|
* function will return -EINVAL whenever it cannot fully convert
|
|
|
|
* the string in @nptr with given @base to a long. This function returns
|
|
|
|
* the result of the conversion only through the @result parameter.
|
|
|
|
*
|
|
|
|
* If NULL is passed in @endptr, then the whole string in @ntpr
|
|
|
|
* is a number otherwise it returns -EINVAL.
|
|
|
|
*
|
|
|
|
* RETURN VALUE
|
|
|
|
* Unlike from strtol() function, this wrapper returns either
|
|
|
|
* -EINVAL or the errno set by strtol() function (e.g -ERANGE).
|
|
|
|
* If the conversion overflows, -ERANGE is returned, and @result
|
|
|
|
* is set to the max value of the desired type
|
|
|
|
* (e.g. LONG_MAX, LLONG_MAX, ULONG_MAX, ULLONG_MAX). If the case
|
|
|
|
* of underflow, -ERANGE is returned, and @result is set to the min
|
|
|
|
* value of the desired type. For strtol(), strtoll(), @result is set to
|
|
|
|
* LONG_MIN, LLONG_MIN, respectively, and for strtoul(), strtoull() it
|
|
|
|
* is set to 0.
|
|
|
|
*/
|
|
|
|
int qemu_strtol(const char *nptr, const char **endptr, int base,
|
|
|
|
long *result)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int err = 0;
|
|
|
|
if (!nptr) {
|
|
|
|
if (endptr) {
|
|
|
|
*endptr = nptr;
|
|
|
|
}
|
|
|
|
err = -EINVAL;
|
|
|
|
} else {
|
|
|
|
errno = 0;
|
|
|
|
*result = strtol(nptr, &p, base);
|
|
|
|
err = check_strtox_error(nptr, p, endptr, errno);
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Converts ASCII string to an unsigned long integer.
|
|
|
|
*
|
|
|
|
* If string contains a negative number, value will be converted to
|
|
|
|
* the unsigned representation of the signed value, unless the original
|
|
|
|
* (nonnegated) value would overflow, in this case, it will set @result
|
|
|
|
* to ULONG_MAX, and return ERANGE.
|
|
|
|
*
|
|
|
|
* The same behavior holds, for qemu_strtoull() but sets @result to
|
|
|
|
* ULLONG_MAX instead of ULONG_MAX.
|
|
|
|
*
|
|
|
|
* See qemu_strtol() documentation for more info.
|
|
|
|
*/
|
|
|
|
int qemu_strtoul(const char *nptr, const char **endptr, int base,
|
|
|
|
unsigned long *result)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int err = 0;
|
|
|
|
if (!nptr) {
|
|
|
|
if (endptr) {
|
|
|
|
*endptr = nptr;
|
|
|
|
}
|
|
|
|
err = -EINVAL;
|
|
|
|
} else {
|
|
|
|
errno = 0;
|
|
|
|
*result = strtoul(nptr, &p, base);
|
|
|
|
/* Windows returns 1 for negative out-of-range values. */
|
|
|
|
if (errno == ERANGE) {
|
|
|
|
*result = -1;
|
|
|
|
}
|
|
|
|
err = check_strtox_error(nptr, p, endptr, errno);
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Converts ASCII string to a long long integer.
|
|
|
|
*
|
|
|
|
* See qemu_strtol() documentation for more info.
|
|
|
|
*/
|
|
|
|
int qemu_strtoll(const char *nptr, const char **endptr, int base,
|
|
|
|
int64_t *result)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int err = 0;
|
|
|
|
if (!nptr) {
|
|
|
|
if (endptr) {
|
|
|
|
*endptr = nptr;
|
|
|
|
}
|
|
|
|
err = -EINVAL;
|
|
|
|
} else {
|
|
|
|
errno = 0;
|
|
|
|
*result = strtoll(nptr, &p, base);
|
|
|
|
err = check_strtox_error(nptr, p, endptr, errno);
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Converts ASCII string to an unsigned long long integer.
|
|
|
|
*
|
|
|
|
* See qemu_strtol() documentation for more info.
|
|
|
|
*/
|
|
|
|
int qemu_strtoull(const char *nptr, const char **endptr, int base,
|
|
|
|
uint64_t *result)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int err = 0;
|
|
|
|
if (!nptr) {
|
|
|
|
if (endptr) {
|
|
|
|
*endptr = nptr;
|
|
|
|
}
|
|
|
|
err = -EINVAL;
|
|
|
|
} else {
|
|
|
|
errno = 0;
|
|
|
|
*result = strtoull(nptr, &p, base);
|
|
|
|
/* Windows returns 1 for negative out-of-range values. */
|
|
|
|
if (errno == ERANGE) {
|
|
|
|
*result = -1;
|
|
|
|
}
|
|
|
|
err = check_strtox_error(nptr, p, endptr, errno);
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|