1 /* $NetBSD: string.h,v 1.2 2007/05/30 21:14:37 tls 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 #ifndef _SSP_STRING_H_ 39 #define _SSP_STRING_H_ 40 41 #include <ssp/ssp.h> 42 43 #if __SSP_FORTIFY_LEVEL > 0 44 45 #define __ssp_bos_check3(fun, dst, src, len) \ 46 ((__ssp_bos0(dst) != (size_t)-1) ? \ 47 __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \ 48 __ ## fun ## _ichk(dst, src, len)) 49 50 #define __ssp_bos_check2(fun, dst, src) \ 51 ((__ssp_bos0(dst) != (size_t)-1) ? \ 52 __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \ 53 __ ## fun ## _ichk(dst, src)) 54 55 #define __ssp_bos_icheck3_restrict(fun, type1, type2) \ 56 static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \ 57 static __inline __attribute__((__always_inline__)) type1 \ 58 __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \ 59 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 60 } 61 62 #define __ssp_bos_icheck3(fun, type1, type2) \ 63 static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \ 64 static __inline __attribute__((__always_inline__)) type1 \ 65 __ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \ 66 return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 67 } 68 69 #define __ssp_bos_icheck2_restrict(fun, type1, type2) \ 70 static __inline type1 __ ## fun ## _ichk(type1, type2); \ 71 static __inline __attribute__((__always_inline__)) type1 \ 72 __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \ 73 return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \ 74 } 75 76 __BEGIN_DECLS 77 __ssp_bos_icheck3_restrict(memcpy, void *, const void *) 78 __ssp_bos_icheck3(memmove, void *, const void *) 79 __ssp_bos_icheck3(memset, void *, int) 80 __ssp_bos_icheck2_restrict(strcpy, char *, const char *) 81 __ssp_bos_icheck2_restrict(strcat, char *, const char *) 82 __ssp_bos_icheck3_restrict(strncpy, char *, const char *) 83 __ssp_bos_icheck3_restrict(strncat, char *, const char *) 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