strace/string_to_uint.c
Dmitry V. Levin b93d52fe3d Change the license of strace to LGPL-2.1-or-later
strace is now provided under the terms of the GNU Lesser General
Public License version 2.1 or later, see COPYING for more details.

strace test suite is now provided under the terms of the GNU General
Public License version 2 or later, see tests/COPYING for more details.
2018-12-10 00:00:00 +00:00

44 lines
773 B
C

/*
* Copyright (c) 2001-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "string_to_uint.h"
long long
string_to_uint_ex(const char *const str, char **const endptr,
const unsigned long long max_val,
const char *const accepted_ending)
{
char *end;
long long val;
if (!*str)
return -1;
errno = 0;
val = strtoll(str, &end, 10);
if (str == end || val < 0 || (unsigned long long) val > max_val
|| (val == LLONG_MAX && errno == ERANGE))
return -1;
if (*end && (!accepted_ending || !strchr(accepted_ending, *end)))
return -1;
if (endptr)
*endptr = end;
return val;
}