1 /* $NetBSD: string.h,v 1.13 2014/11/29 13:23:48 pooka 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 38 void *__memcpy_chk(void *, const void *, size_t, size_t); 39 void *__memmove_chk(void *, const void *, size_t, size_t); 40 void *__mempcpy_chk(void *, const void *, size_t, size_t); 41 void *__memset_chk(void *, int, size_t, size_t); 42 char *__stpcpy_chk(char *, const char *, size_t); 43 char *__strcat_chk(char *, const char *, size_t); 44 char *__strcpy_chk(char *, const char *, size_t); 45 char *__strncat_chk(char *, const char *, size_t, size_t); 46 char *__strncpy_chk(char *, const char *, size_t, size_t); 47 __END_DECLS 48 49 #if __SSP_FORTIFY_LEVEL > 0 50 51 #define __ssp_bos_check3(fun, dst, src, len) \ 52 ((__ssp_bos0(dst) != (size_t)-1) ? \ 53 __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \ 54 __ ## fun ## _ichk(dst, src, len)) 55 56 #define __ssp_bos_check2(fun, dst, src) \ 57 ((__ssp_bos0(dst) != (size_t)-1) ? \ 58 __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \ 59 __ ## fun ## _ichk(dst, src)) 60 61 #define __ssp_bos_icheck3_restrict(fun, type1, type2) \ 62 __ssp_inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \ 63 __ssp_inline type1 \ 64 __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \ 65 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 66 } 67 68 #define __ssp_bos_icheck3(fun, type1, type2) \ 69 __ssp_inline type1 __ ## fun ## _ichk(type1, type2, size_t); \ 70 __ssp_inline type1 \ 71 __ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \ 72 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 73 } 74 75 #define __ssp_bos_icheck2_restrict(fun, type1, type2) \ 76 __ssp_inline type1 __ ## fun ## _ichk(type1, type2); \ 77 __ssp_inline type1 \ 78 __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \ 79 return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \ 80 } 81 82 __BEGIN_DECLS 83 __ssp_bos_icheck3_restrict(memcpy, void *, const void *) 84 __ssp_bos_icheck3(memmove, void *, const void *) 85 __ssp_bos_icheck3_restrict(mempcpy, void *, const void *) 86 __ssp_bos_icheck3(memset, void *, int) 87 __ssp_bos_icheck2_restrict(stpcpy, char *, const char *) 88 #if __GNUC_PREREQ__(4,8) || defined(__clang__) 89 __ssp_bos_icheck3_restrict(stpncpy, char *, const char *) 90 #endif 91 __ssp_bos_icheck2_restrict(strcpy, char *, const char *) 92 __ssp_bos_icheck2_restrict(strcat, char *, const char *) 93 __ssp_bos_icheck3_restrict(strncpy, char *, const char *) 94 __ssp_bos_icheck3_restrict(strncat, char *, const char *) 95 __END_DECLS 96 97 #define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len) 98 #define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len) 99 #if __GNU_VISIBLE 100 #define mempcpy(dst, src, len) __ssp_bos_check3(mempcpy, dst, src, len) 101 #endif 102 #define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len) 103 #if __POSIX_VISIBLE >= 200809 104 #define stpcpy(dst, src) __ssp_bos_check2(stpcpy, dst, src) 105 #if __GNUC_PREREQ__(4,8) || defined(__clang__) 106 #define stpncpy(dst, src, len) __ssp_bos_check3(stpncpy, dst, src, len) 107 #endif 108 #endif 109 #define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src) 110 #define strcat(dst, src) __ssp_bos_check2(strcat, dst, src) 111 #define strncpy(dst, src, len) __ssp_bos_check3(strncpy, dst, src, len) 112 #define strncat(dst, src, len) __ssp_bos_check3(strncat, dst, src, len) 113 114 #endif /* __SSP_FORTIFY_LEVEL > 0 */ 115 #endif /* _SSP_STRING_H_ */ 116
