1/*	$NetBSD: string.h,v 1.3 2008/04/28 20:22:54 martin 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) \
49static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \
50static __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) \
56static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \
57static __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) \
63static __inline type1 __ ## fun ## _ichk(type1, type2); \
64static __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 *)
77void *__memcpy_chk(void *, const void *, size_t, size_t);
78void *__memmove_chk(void *, void *, size_t, size_t);
79void *__memset_chk(void *, int, size_t, size_t);
80char *__strcat_chk(char *, const char *, size_t);
81char *__strcpy_chk(char *, const char *, size_t);
82char *__strncat_chk(char *, const char *, size_t, size_t);
83char *__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