* include/string.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_STRING_H
#define __INCLUDE_STRING_H
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stddef.h>
#include <alloca.h>
* Pre-processor Definitions
****************************************************************************/
#define strcoll_l(s1, s2, l) strcoll(s1, s2)
#define strdupa(x) strcpy(alloca(strlen(x) + 1), x)
#define strerror_l(e, l) strerror(e)
#define strxfrm_l(s1, s2, n, l) strxfrm(s1, s2, n)
#define strndupa(x, l) ({ \
FAR const char *__old = (x); \
size_t __len = strnlen(__old, (l)); \
FAR char *__new = alloca(__len + 1); \
__new[__len] = '\0'; \
(FAR char *)memcpy(__new, __old, __len); \
})
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
FAR char *strdup(FAR const char *) malloc_like;
FAR char *strndup(FAR const char *, size_t) malloc_like;
FAR char *strerror(int);
int strerror_r(int, FAR char *, size_t);
size_t strlen(FAR const char *);
size_t strnlen(FAR const char *, size_t);
FAR char *strcat(FAR char *, FAR const char *);
size_t strlcat(FAR char *, FAR const char *, size_t);
FAR char *strncat(FAR char *, FAR const char *, size_t);
int strcmp(FAR const char *, FAR const char *);
int strncmp(FAR const char *, FAR const char *, size_t);
int strcoll(FAR const char *, FAR const char *);
FAR char *strcpy(FAR char *, FAR const char *);
FAR char *stpcpy(FAR char *, FAR const char *);
size_t strlcpy(FAR char *, FAR const char *, size_t);
FAR char *strncpy(FAR char *, FAR const char *, size_t);
FAR char *stpncpy(FAR char *, FAR const char *, size_t);
FAR char *strpbrk(FAR const char *, FAR const char *);
FAR char *strchr(FAR const char *, int);
FAR char *strchrnul(FAR const char *, int);
FAR char *strrchr(FAR const char *, int);
size_t strspn(FAR const char *, FAR const char *);
size_t strcspn(FAR const char *, FAR const char *);
FAR char *strstr(FAR const char *, FAR const char *);
FAR char *strcasestr(FAR const char *, FAR const char *);
FAR char *strsep(FAR char **, FAR const char *);
FAR char *strsignal(int);
FAR char *strtok(FAR char *, FAR const char *);
FAR char *strtok_r(FAR char *, FAR const char *, FAR char **);
size_t strxfrm(FAR char *, FAR const char *, size_t);
int strverscmp(FAR const char *, FAR const char *);
FAR void *memchr(FAR const void *, int, size_t);
FAR void *memrchr(FAR const void *, int, size_t);
#ifndef __VSX_HDR_TESTING
FAR void *rawmemchr(FAR const void *, int);
#endif
FAR void *memccpy(FAR void *, FAR const void *, int, size_t);
int memcmp(FAR const void *, FAR const void *, size_t);
FAR void *memcpy(FAR void *, FAR const void *, size_t);
FAR void *mempcpy(FAR void *, FAR const void *, size_t);
FAR void *memmove(FAR void *, FAR const void *, size_t);
FAR void *memset(FAR void *, int, size_t);
FAR void *memmem(FAR const void *, size_t,
FAR const void *, size_t);
void explicit_bzero(FAR void *, size_t);
int timingsafe_bcmp(FAR const void *, FAR const void *, size_t);
#ifdef __KERNEL__
# define strdup(s) nx_strdup(s)
# define strndup(s,sz) nx_strndup(s,sz)
#endif
FAR char *nx_strdup(FAR const char *) malloc_like;
FAR char *nx_strndup(FAR const char *, size_t) malloc_like;
#if CONFIG_FORTIFY_SOURCE > 0
fortify_function(strcat) FAR char *strcat(FAR char *dest,
FAR const char *src)
{
fortify_assert(strlen(dest) + strlen(src) + 1 <= fortify_size(dest, 0));
return __real_strcat(dest, src);
}
fortify_function(strlcat) size_t strlcat(FAR char *dst,
FAR const char *src,
size_t dsize)
{
fortify_assert(dsize <= fortify_size(dst, 0));
return __real_strlcat(dst, src, dsize);
}
fortify_function(strncat) FAR char *strncat(FAR char *dest,
FAR const char *src,
size_t n)
{
fortify_assert(n <= fortify_size(dest, 0));
return __real_strncat(dest, src, n);
}
fortify_function(strcpy) FAR char *strcpy(FAR char *dest,
FAR const char *src)
{
fortify_assert(strlen(src) + 1 <= fortify_size(dest, 0));
return __real_strcpy(dest, src);
}
fortify_function(stpcpy) FAR char *stpcpy(FAR char *dest,
FAR const char *src)
{
fortify_assert(strlen(src) + 1 <= fortify_size(dest, 0));
return __real_stpcpy(dest, src);
}
fortify_function(stpncpy) FAR char *stpncpy(FAR char *dest,
FAR const char *src,
size_t n)
{
fortify_assert(n <= fortify_size(dest, 0));
return __real_stpncpy(dest, src, n);
}
fortify_function(strlcpy) size_t strlcpy(FAR char *dst,
FAR const char *src,
size_t siz)
{
fortify_assert(siz <= fortify_size(dst, 0));
return __real_strlcpy(dst, src, siz);
}
fortify_function(strncpy) FAR char *strncpy(FAR char *dest,
FAR const char *src,
size_t n)
{
fortify_assert(n <= fortify_size(dest, 0));
return __real_strncpy(dest, src, n);
}
fortify_function(memmove) FAR void *memmove(FAR void *dest,
FAR const void *src,
size_t count)
{
fortify_assert(count <= fortify_size(dest, 0) &&
count <= fortify_size(src, 0));
return __real_memmove(dest, src, count);
}
fortify_function(memcpy) FAR void *memcpy(FAR void *dest,
FAR const void *src,
size_t n)
{
fortify_assert(n <= fortify_size(dest, 0) && n <= fortify_size(src, 0));
return __real_memcpy(dest, src, n);
}
fortify_function(memset) FAR void *memset(FAR void *s, int c, size_t n)
{
fortify_assert(n <= fortify_size(s, 0));
return __real_memset(s, c, n);
}
fortify_function(mempcpy) FAR void *mempcpy(FAR void *dest,
FAR const void *src,
size_t n)
{
fortify_assert(n <= fortify_size(dest, 0) && n <= fortify_size(src, 0));
return __real_mempcpy(dest, src, n);
}
fortify_function(explicit_bzero) void explicit_bzero(FAR void *s,
size_t n)
{
fortify_assert(n <= fortify_size(s, 0));
__real_explicit_bzero(s, n);
}
#endif
#ifdef CONFIG_HAVE_BUILTIN
# if __has_builtin(__builtin_memcpy)
builtin_function(memcpy) FAR void *memcpy(FAR void *dest,
FAR const void *src, size_t n)
{
if (__builtin_constant_p(n))
{
return __builtin_memcpy(dest, src, n);
}
else
{
return __orig_memcpy(dest, src, n);
}
}
# endif
# if __has_builtin(__builtin_memset)
builtin_function(memset) FAR void *memset(FAR void *s, int c, size_t n)
{
if (__builtin_constant_p(n))
{
return __builtin_memset(s, c, n);
}
else
{
return __orig_memset(s, c, n);
}
}
# endif
# if __has_builtin(__builtin_memcmp)
builtin_function(memcmp) int memcmp(FAR const void *s1,
FAR const void *s2, size_t n)
{
if (__builtin_constant_p(s1) && __builtin_constant_p(s2))
{
return __builtin_memcmp(s1, s2, n);
}
else
{
return __orig_memcmp(s1, s2, n);
}
}
# endif
# if __has_builtin(__builtin_memchr)
builtin_function(memchr) FAR void *memchr(FAR const void *s,
int c, size_t n)
{
if (__builtin_constant_p(s))
{
return __builtin_memchr(s, c, n);
}
else
{
return __orig_memchr(s, c, n);
}
}
# endif
# if __has_builtin(__builtin_strcat)
builtin_function(strcat) FAR char *strcat(FAR char *dest,
FAR const char *src)
{
if (__builtin_constant_p(src))
{
return __builtin_strcat(dest, src);
}
else
{
return __orig_strcat(dest, src);
}
}
# endif
# if __has_builtin(__builtin_strchr)
builtin_function(strchr) FAR char *strchr(FAR const char *s, int c)
{
if (__builtin_constant_p(s))
{
return __builtin_strchr(s, c);
}
else
{
return __orig_strchr(s, c);
}
}
# endif
# if __has_builtin(__builtin_strcmp)
builtin_function(strcmp) int strcmp(FAR const char *s1,
FAR const char *s2)
{
if (__builtin_constant_p(s1) && __builtin_constant_p(s2))
{
return __builtin_strcmp(s1, s2);
}
else
{
return __orig_strcmp(s1, s2);
}
}
# endif
# if __has_builtin(__builtin_strcpy)
builtin_function(strcpy) FAR char *strcpy(FAR char *dest,
FAR const char *src)
{
if (__builtin_constant_p(src))
{
return __builtin_strcpy(dest, src);
}
else
{
return __orig_strcpy(dest, src);
}
}
# endif
# if __has_builtin(__builtin_strcspn)
builtin_function(strcspn) size_t strcspn(FAR const char *s,
FAR const char *reject)
{
if (__builtin_constant_p(s) && __builtin_constant_p(reject))
{
return __builtin_strcspn(s, reject);
}
else
{
return __orig_strcspn(s, reject);
}
}
# endif
# if __has_builtin(__builtin_strlen)
builtin_function(strlen) size_t strlen(FAR const char *s)
{
if (__builtin_constant_p(s))
{
return __builtin_strlen(s);
}
else
{
return __orig_strlen(s);
}
}
# endif
# if __has_builtin(__builtin_strncat)
builtin_function(strncat) FAR char *strncat(FAR char *dest,
FAR const char *src,
size_t n)
{
if (__builtin_constant_p(dest))
{
return __builtin_strncat(dest, src, n);
}
else
{
return __orig_strncat(dest, src, n);
}
}
# endif
# if __has_builtin(__builtin_strncmp)
builtin_function(strncmp) int strncmp(FAR const char *s1,
FAR const char *s2, size_t n)
{
if (__builtin_constant_p(s1) && __builtin_constant_p(s2))
{
return __builtin_strncmp(s1, s2, n);
}
else
{
return __orig_strncmp(s1, s2, n);
}
}
# endif
# if __has_builtin(__builtin_strncpy)
builtin_function(strncpy) FAR char *strncpy(FAR char *dest,
FAR const char *src,
size_t n)
{
if (__builtin_constant_p(src))
{
return __builtin_strncpy(dest, src, n);
}
else
{
return __orig_strncpy(dest, src, n);
}
}
# endif
# if __has_builtin(__builtin_strpbrk)
builtin_function(strpbrk) FAR char *strpbrk(FAR const char *s1,
FAR const char *s2)
{
if (__builtin_constant_p(s1))
{
return __builtin_strpbrk(s1, s2);
}
else
{
return __orig_strpbrk(s1, s2);
}
}
# endif
# if __has_builtin(__builtin_strrchr)
builtin_function(strrchr) FAR char *strrchr(FAR const char *s,
int c)
{
if (__builtin_constant_p(s))
{
return __builtin_strrchr(s, c);
}
else
{
return __orig_strrchr(s, c);
}
}
# endif
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif