xref: /rk3399_ARM-atf/lib/libc/strnlen_secure.c (revision 38b5f93a2b27658918aa6b20d2fa57cffdadc74f) 
1 /*
2  * Copyright (c) 2024-2025, Altera Corporation. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <string.h>
8 
strnlen_secure(const char * str,size_t maxlen)9 size_t strnlen_secure(const char *str, size_t maxlen)
10 {
11 	size_t len = 0;
12 
13 	if (str == NULL) {
14 		return 0;
15 	}
16 
17 	while ((len < maxlen) && (str[len] != '\0')) {
18 		len++;
19 	}
20 
21 	return len;
22 }
23