1/* $NetBSD: string.h,v 1.14 2020/09/05 13:37:59 mrg Exp $ */ 2 3/*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31#ifndef _SSP_STRING_H_ 32#define _SSP_STRING_H_ 33 34#include <sys/cdefs.h> 35#include <ssp/ssp.h> 36 37__BEGIN_DECLS 38void *__memcpy_chk(void *, const void *, size_t, size_t); 39void *__memmove_chk(void *, const void *, size_t, size_t); 40void *__memset_chk(void *, int, size_t, size_t); 41char *__stpcpy_chk(char *, const char *, size_t); 42char *__strcat_chk(char *, const char *, size_t); 43char *__strcpy_chk(char *, const char *, size_t); 44char *__strncat_chk(char *, const char *, size_t, size_t); 45char *__strncpy_chk(char *, const char *, size_t, size_t); 46__END_DECLS 47 48#if __SSP_FORTIFY_LEVEL > 0 49 50#define __ssp_bos_check3(fun, dst, src, len) \ 51 ((__ssp_bos0(dst) != (size_t)-1) ? \ 52 __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \ 53 __ ## fun ## _ichk(dst, src, len)) 54 55#define __ssp_bos_check2(fun, dst, src) \ 56 ((__ssp_bos0(dst) != (size_t)-1) ? \ 57 __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \ 58 __ ## fun ## _ichk(dst, src)) 59 60#define __ssp_bos_icheck3_restrict(fun, type1, type2) \ 61static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \ 62static __inline __attribute__((__always_inline__)) type1 \ 63__ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \ 64 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 65} 66 67#define __ssp_bos_icheck3(fun, type1, type2) \ 68static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \ 69static __inline __attribute__((__always_inline__)) type1 \ 70__ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \ 71 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 72} 73 74#define __ssp_bos_icheck2_restrict(fun, type1, type2) \ 75static __inline type1 __ ## fun ## _ichk(type1, type2); \ 76static __inline __attribute__((__always_inline__)) type1 \ 77__ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \ 78 return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \ 79} 80 81__BEGIN_DECLS 82__ssp_bos_icheck3_restrict(memcpy, void *, const void *) 83__ssp_bos_icheck3(memmove, void *, const void *) 84__ssp_bos_icheck3(memset, void *, int) 85__ssp_bos_icheck2_restrict(stpcpy, char *, const char *) 86#if __GNUC_PREREQ__(4,8) || defined(__clang__) 87__ssp_bos_icheck3_restrict(stpncpy, char *, const char *) 88#endif 89__ssp_bos_icheck2_restrict(strcpy, char *, const char *) 90__ssp_bos_icheck2_restrict(strcat, char *, const char *) 91__ssp_bos_icheck3_restrict(strncpy, char *, const char *) 92__ssp_bos_icheck3_restrict(strncat, char *, const char *) 93__END_DECLS 94 95#define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len) 96#define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len) 97#define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len) 98#define stpcpy(dst, src) __ssp_bos_check2(stpcpy, dst, src) 99#if __GNUC_PREREQ__(4,8) || defined(__clang__) 100#define stpncpy(dst, src, len) __ssp_bos_check3(stpncpy, dst, src, len) 101#endif 102#define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src) 103#define strcat(dst, src) __ssp_bos_check2(strcat, dst, src) 104#define strncpy(dst, src, len) __ssp_bos_check3(strncpy, dst, src, len) 105#define strncat(dst, src, len) __ssp_bos_check3(strncat, dst, src, len) 106 107#endif /* __SSP_FORTIFY_LEVEL > 0 */ 108#endif /* _SSP_STRING_H_ */ 109