/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (c) 2014, STMicroelectronics International N.V.
 */

/*
 * This file provides extensions for functions not defined in <string.h>
 */

#ifndef STRING_EXT_H
#define STRING_EXT_H

#include <stddef.h>
#include <sys/cdefs.h>

/*
 * Copy src to string dst of siz size.  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz == 0).
 * Returns strlen(src); if retval >= siz, truncation occurred.
 */
size_t strlcpy(char *dst, const char *src, size_t size);
size_t strlcat(char *dst, const char *src, size_t size);

/* A constant-time version of memcmp() */
int consttime_memcmp(const void *p1, const void *p2, size_t nb);

/* Deprecated. For backward compatibility. */
static inline int buf_compare_ct(const void *s1, const void *s2, size_t n)
{
	return consttime_memcmp(s1, s2, n);
}

/* Variant of strdup() that uses nex_malloc() instead of malloc() */
char *nex_strdup(const char *s);

#endif /* STRING_EXT_H */