1 /* $NetBSD: string.h,v 1.4 2009/11/17 20:47:59 drochner 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 <ssp/ssp.h> 35 36 #if __SSP_FORTIFY_LEVEL > 0 37 38 #define __ssp_bos_check3(fun, dst, src, len) \ 39 ((__ssp_bos0(dst) != (size_t)-1) ? \ 40 __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \ 41 __ ## fun ## _ichk(dst, src, len)) 42 43 #define __ssp_bos_check2(fun, dst, src) \ 44 ((__ssp_bos0(dst) != (size_t)-1) ? \ 45 __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \ 46 __ ## fun ## _ichk(dst, src)) 47 48 #define __ssp_bos_icheck3_restrict(fun, type1, type2) \ 49 static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \ 50 static __inline __attribute__((__always_inline__)) type1 \ 51 __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \ 52 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 53 } 54 55 #define __ssp_bos_icheck3(fun, type1, type2) \ 56 static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \ 57 static __inline __attribute__((__always_inline__)) type1 \ 58 __ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \ 59 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 60 } 61 62 #define __ssp_bos_icheck2_restrict(fun, type1, type2) \ 63 static __inline type1 __ ## fun ## _ichk(type1, type2); \ 64 static __inline __attribute__((__always_inline__)) type1 \ 65 __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \ 66 return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \ 67 } 68 69 __BEGIN_DECLS 70 __ssp_bos_icheck3_restrict(memcpy, void *, const void *) 71 __ssp_bos_icheck3(memmove, void *, const void *) 72 __ssp_bos_icheck3(memset, void *, int) 73 __ssp_bos_icheck2_restrict(strcpy, char *, const char *) 74 __ssp_bos_icheck2_restrict(strcat, char *, const char *) 75 __ssp_bos_icheck3_restrict(strncpy, char *, const char *) 76 __ssp_bos_icheck3_restrict(strncat, char *, const char *) 77 void *__memcpy_chk(void *, const void *, size_t, size_t); 78 void *__memmove_chk(void *, void *, size_t, size_t); 79 void *__memset_chk(void *, int, size_t, size_t); 80 char *__strcat_chk(char *, const char *, size_t); 81 char *__strcpy_chk(char *, const char *, size_t); 82 char *__strncat_chk(char *, const char *, size_t, size_t); 83 char *__strncpy_chk(char *, const char *, size_t, size_t); 84 __END_DECLS 85 86 #define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len) 87 #define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len) 88 #define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len) 89 #define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src) 90 #define strcat(dst, src) __ssp_bos_check2(strcat, dst, src) 91 #define strncpy(dst, src, len) __ssp_bos_check3(strncpy, dst, src, len) 92 #define strncat(dst, src, len) __ssp_bos_check3(strncat, dst, src, len) 93 94 #endif /* __SSP_FORTIFY_LEVEL > 0 */ 95 #endif /* _SSP_STRING_H_ */ 96