freebsd-src/include/string.h
Kyle Evans 9bfd3b4076 Add a build knob for _FORTIFY_SOURCE
In the future, we will Default to _FORTIFY_SOURCE=2 if SSP is enabled,
otherwise default to _FORTIFY_SOURCE=0.  For now we default it to 0
unconditionally to ease bisect across older versions without the new
symbols, and we'll put out a call for testing.

include/*.h include their ssp/*.h equivalents as needed based on the
knob. Programs and users are allowed to override FORTIFY_SOURCE in their
Makefiles or src.conf/make.conf to force it off.

Reviewed by:	des, markj
Relnotes:	yes
Sponsored by:	Stormshield
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D32308
2024-05-13 00:23:50 -05:00

175 lines
5.6 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _STRING_H_
#define _STRING_H_
#include <sys/cdefs.h>
#include <sys/_null.h>
#include <sys/_types.h>
/*
* Prototype functions which were historically defined in <string.h>, but
* are required by POSIX to be prototyped in <strings.h>.
*/
#if __BSD_VISIBLE
#include <strings.h>
#endif
#ifndef _SIZE_T_DECLARED
typedef __size_t size_t;
#define _SIZE_T_DECLARED
#endif
__BEGIN_DECLS
#if __XSI_VISIBLE >= 600
void *memccpy(void * __restrict, const void * __restrict, int, size_t);
#endif
void *memchr(const void *, int, size_t) __pure;
#if __BSD_VISIBLE
void *memrchr(const void *, int, size_t) __pure;
#endif
int memcmp(const void *, const void *, size_t) __pure;
void *memcpy(void * __restrict, const void * __restrict, size_t);
#if __BSD_VISIBLE
void *memmem(const void *, size_t, const void *, size_t) __pure;
#endif
void *memmove(void *, const void *, size_t);
#if __BSD_VISIBLE
void *mempcpy(void * __restrict, const void * __restrict, size_t);
#endif
void *memset(void *, int, size_t);
#if __POSIX_VISIBLE >= 200809
char *stpcpy(char * __restrict, const char * __restrict);
char *stpncpy(char * __restrict, const char * __restrict, size_t);
#endif
#if __BSD_VISIBLE
char *strcasestr(const char *, const char *) __pure;
#endif
char *strcat(char * __restrict, const char * __restrict);
char *strchr(const char *, int) __pure;
#if __BSD_VISIBLE
char *strchrnul(const char*, int) __pure;
int strverscmp(const char *, const char *) __pure;
#endif
int strcmp(const char *, const char *) __pure;
int strcoll(const char *, const char *);
char *strcpy(char * __restrict, const char * __restrict);
size_t strcspn(const char *, const char *) __pure;
#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
char *strdup(const char *) __malloc_like;
#endif
char *strerror(int);
#if __POSIX_VISIBLE >= 200112
int strerror_r(int, char *, size_t);
#endif
#if __BSD_VISIBLE
size_t strlcat(char * __restrict, const char * __restrict, size_t);
size_t strlcpy(char * __restrict, const char * __restrict, size_t);
#endif
size_t strlen(const char *) __pure;
#if __BSD_VISIBLE
#ifndef _MODE_T_DECLARED
typedef __mode_t mode_t;
#define _MODE_T_DECLARED
#endif
void strmode(mode_t, char *);
#endif
char *strncat(char * __restrict, const char * __restrict, size_t);
int strncmp(const char *, const char *, size_t) __pure;
char *strncpy(char * __restrict, const char * __restrict, size_t);
#if __POSIX_VISIBLE >= 200809
char *strndup(const char *, size_t) __malloc_like;
size_t strnlen(const char *, size_t) __pure;
#endif
#if __BSD_VISIBLE
char *strnstr(const char *, const char *, size_t) __pure;
#endif
char *strpbrk(const char *, const char *) __pure;
char *strrchr(const char *, int) __pure;
#if __BSD_VISIBLE
char *strsep(char **, const char *);
#endif
#if __POSIX_VISIBLE >= 200809
char *strsignal(int);
#endif
size_t strspn(const char *, const char *) __pure;
char *strstr(const char *, const char *) __pure;
char *strtok(char * __restrict, const char * __restrict);
#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 500
char *strtok_r(char *, const char *, char **);
#endif
size_t strxfrm(char * __restrict, const char * __restrict, size_t);
#if __BSD_VISIBLE
#ifndef _SWAB_DECLARED
#define _SWAB_DECLARED
#ifndef _SSIZE_T_DECLARED
typedef __ssize_t ssize_t;
#define _SSIZE_T_DECLARED
#endif /* _SIZE_T_DECLARED */
void swab(const void * __restrict, void * __restrict, ssize_t);
#endif /* _SWAB_DECLARED */
int timingsafe_bcmp(const void *, const void *, size_t);
int timingsafe_memcmp(const void *, const void *, size_t);
#endif /* __BSD_VISIBLE */
#if __POSIX_VISIBLE >= 200112 || defined(_XLOCALE_H_)
#include <xlocale/_string.h>
#endif
#if __EXT1_VISIBLE
#ifndef _RSIZE_T_DEFINED
#define _RSIZE_T_DEFINED
typedef size_t rsize_t;
#endif
#ifndef _ERRNO_T_DEFINED
#define _ERRNO_T_DEFINED
typedef int errno_t;
#endif
/* ISO/IEC 9899:2011 K.3.7.4.1.1 */
errno_t memset_s(void *, rsize_t, int, rsize_t);
#endif /* __EXT1_VISIBLE */
__END_DECLS
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
#include <ssp/string.h>
#endif
#endif /* _STRING_H_ */