1*0a6a1f1dSLionel Sambuc /* $NetBSD: string.h,v 1.13 2014/11/29 13:23:48 pooka Exp $ */ 22fe8fb19SBen Gras 32fe8fb19SBen Gras /*- 42fe8fb19SBen Gras * Copyright (c) 2006 The NetBSD Foundation, Inc. 52fe8fb19SBen Gras * All rights reserved. 62fe8fb19SBen Gras * 72fe8fb19SBen Gras * This code is derived from software contributed to The NetBSD Foundation 82fe8fb19SBen Gras * by Christos Zoulas. 92fe8fb19SBen Gras * 102fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 112fe8fb19SBen Gras * modification, are permitted provided that the following conditions 122fe8fb19SBen Gras * are met: 132fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 142fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 152fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 162fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 172fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 182fe8fb19SBen Gras * 192fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 202fe8fb19SBen Gras * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 212fe8fb19SBen Gras * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 222fe8fb19SBen Gras * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 232fe8fb19SBen Gras * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 242fe8fb19SBen Gras * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 252fe8fb19SBen Gras * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 262fe8fb19SBen Gras * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 272fe8fb19SBen Gras * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 282fe8fb19SBen Gras * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 292fe8fb19SBen Gras * POSSIBILITY OF SUCH DAMAGE. 302fe8fb19SBen Gras */ 312fe8fb19SBen Gras #ifndef _SSP_STRING_H_ 322fe8fb19SBen Gras #define _SSP_STRING_H_ 332fe8fb19SBen Gras 34*0a6a1f1dSLionel Sambuc #include <sys/cdefs.h> 352fe8fb19SBen Gras #include <ssp/ssp.h> 362fe8fb19SBen Gras 37f14fb602SLionel Sambuc __BEGIN_DECLS 38f14fb602SLionel Sambuc void *__memcpy_chk(void *, const void *, size_t, size_t); 39f14fb602SLionel Sambuc void *__memmove_chk(void *, void *, size_t, size_t); 40f14fb602SLionel Sambuc void *__memset_chk(void *, int, size_t, size_t); 4184d9c625SLionel Sambuc char *__stpcpy_chk(char *, const char *, size_t); 42f14fb602SLionel Sambuc char *__strcat_chk(char *, const char *, size_t); 43f14fb602SLionel Sambuc char *__strcpy_chk(char *, const char *, size_t); 44f14fb602SLionel Sambuc char *__strncat_chk(char *, const char *, size_t, size_t); 45f14fb602SLionel Sambuc char *__strncpy_chk(char *, const char *, size_t, size_t); 46f14fb602SLionel Sambuc __END_DECLS 47f14fb602SLionel Sambuc 482fe8fb19SBen Gras #if __SSP_FORTIFY_LEVEL > 0 492fe8fb19SBen Gras 502fe8fb19SBen Gras #define __ssp_bos_check3(fun, dst, src, len) \ 512fe8fb19SBen Gras ((__ssp_bos0(dst) != (size_t)-1) ? \ 522fe8fb19SBen Gras __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \ 532fe8fb19SBen Gras __ ## fun ## _ichk(dst, src, len)) 542fe8fb19SBen Gras 552fe8fb19SBen Gras #define __ssp_bos_check2(fun, dst, src) \ 562fe8fb19SBen Gras ((__ssp_bos0(dst) != (size_t)-1) ? \ 572fe8fb19SBen Gras __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \ 582fe8fb19SBen Gras __ ## fun ## _ichk(dst, src)) 592fe8fb19SBen Gras 602fe8fb19SBen Gras #define __ssp_bos_icheck3_restrict(fun, type1, type2) \ 612fe8fb19SBen Gras static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \ 622fe8fb19SBen Gras static __inline __attribute__((__always_inline__)) type1 \ 632fe8fb19SBen Gras __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \ 642fe8fb19SBen Gras return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 652fe8fb19SBen Gras } 662fe8fb19SBen Gras 672fe8fb19SBen Gras #define __ssp_bos_icheck3(fun, type1, type2) \ 682fe8fb19SBen Gras static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \ 692fe8fb19SBen Gras static __inline __attribute__((__always_inline__)) type1 \ 702fe8fb19SBen Gras __ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \ 712fe8fb19SBen Gras return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 722fe8fb19SBen Gras } 732fe8fb19SBen Gras 742fe8fb19SBen Gras #define __ssp_bos_icheck2_restrict(fun, type1, type2) \ 752fe8fb19SBen Gras static __inline type1 __ ## fun ## _ichk(type1, type2); \ 762fe8fb19SBen Gras static __inline __attribute__((__always_inline__)) type1 \ 772fe8fb19SBen Gras __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \ 782fe8fb19SBen Gras return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \ 792fe8fb19SBen Gras } 802fe8fb19SBen Gras 812fe8fb19SBen Gras __BEGIN_DECLS 822fe8fb19SBen Gras __ssp_bos_icheck3_restrict(memcpy, void *, const void *) 832fe8fb19SBen Gras __ssp_bos_icheck3(memmove, void *, const void *) 842fe8fb19SBen Gras __ssp_bos_icheck3(memset, void *, int) 8584d9c625SLionel Sambuc __ssp_bos_icheck2_restrict(stpcpy, char *, const char *) 86*0a6a1f1dSLionel Sambuc #if __GNUC_PREREQ__(4,8) || defined(__clang__) 87*0a6a1f1dSLionel Sambuc __ssp_bos_icheck3_restrict(stpncpy, char *, const char *) 88*0a6a1f1dSLionel Sambuc #endif 892fe8fb19SBen Gras __ssp_bos_icheck2_restrict(strcpy, char *, const char *) 902fe8fb19SBen Gras __ssp_bos_icheck2_restrict(strcat, char *, const char *) 912fe8fb19SBen Gras __ssp_bos_icheck3_restrict(strncpy, char *, const char *) 922fe8fb19SBen Gras __ssp_bos_icheck3_restrict(strncat, char *, const char *) 932fe8fb19SBen Gras __END_DECLS 942fe8fb19SBen Gras 952fe8fb19SBen Gras #define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len) 962fe8fb19SBen Gras #define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len) 972fe8fb19SBen Gras #define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len) 9884d9c625SLionel Sambuc #define stpcpy(dst, src) __ssp_bos_check2(stpcpy, dst, src) 99*0a6a1f1dSLionel Sambuc #if __GNUC_PREREQ__(4,8) || defined(__clang__) 100*0a6a1f1dSLionel Sambuc #define stpncpy(dst, src, len) __ssp_bos_check3(stpncpy, dst, src, len) 101*0a6a1f1dSLionel Sambuc #endif 1022fe8fb19SBen Gras #define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src) 1032fe8fb19SBen Gras #define strcat(dst, src) __ssp_bos_check2(strcat, dst, src) 1042fe8fb19SBen Gras #define strncpy(dst, src, len) __ssp_bos_check3(strncpy, dst, src, len) 1052fe8fb19SBen Gras #define strncat(dst, src, len) __ssp_bos_check3(strncat, dst, src, len) 1062fe8fb19SBen Gras 1072fe8fb19SBen Gras #endif /* __SSP_FORTIFY_LEVEL > 0 */ 1082fe8fb19SBen Gras #endif /* _SSP_STRING_H_ */ 109