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 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