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include/secure/_strings.h
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| /*- | |||||
| * Copyright (C) 2015 Oliver Pinter | |||||
| * All rights reserved. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * * Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * * Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in | |||||
| * the documentation and/or other materials provided with the | |||||
| * distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |||||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |||||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |||||
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |||||
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |||||
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |||||
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |||||
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |||||
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |||||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |||||
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #ifndef _STRINGS_H_ | |||||
| #error "You should not use <secure/_strings.h> directly; include <sys/strings.h> instead." | |||||
| #endif | |||||
| #ifndef _SECURE_STRINGS_H_ | |||||
| #define _SECURE_STRINGS_H_ | |||||
| #include <secure/security.h> | |||||
| __BEGIN_DECLS | |||||
| extern void *__bcopy_chk(void *, const void *, size_t, size_t) __RENAME(__memmove_chk); | |||||
| extern void __bcopy_real(const void *, void *, size_t) __RENAME(bcopy); | |||||
| extern void *__bzero_chk(void *, int, size_t, size_t) __RENAME(__memset_chk); | |||||
| extern void __bzero_real(void *, size_t) __RENAME(bzero); | |||||
| extern char *__rindex_chk(const char *, int, size_t); | |||||
| extern char *__rindex_real(const char *, int) __RENAME(rindex); | |||||
| #if defined(__BSD_FORTIFY) | |||||
| #if __BSD_VISIBLE || __POSIX_VISIBLE <= 200112 | |||||
| __FORTIFY_INLINE void | |||||
| bcopy(const void *_s, void *_d, size_t _l) | |||||
| { | |||||
| size_t _bos = __bos0(_d); | |||||
| #if !defined(__clang__) | |||||
| if (_bos == __FORTIFY_UNKNOWN_SIZE) | |||||
| __bcopy_real(_s, _d, _l); | |||||
| #endif | |||||
| (void)(__bcopy_chk(_d, _s, _l, _bos)); | |||||
| } | |||||
| #endif | |||||
| #if __BSD_VISIBLE || __POSIX_VISIBLE <= 200112 | |||||
| __FORTIFY_INLINE void | |||||
| bzero(void *_s, size_t _n) | |||||
| { | |||||
| size_t _bos = __bos(_s); | |||||
| #if !defined(__clang__) | |||||
| if (_bos == __FORTIFY_UNKNOWN_SIZE) | |||||
| __bzero_real(_s, _n); | |||||
| #endif | |||||
| (void)(__bzero_chk(_s, '\0', _n, _bos)); | |||||
| } | |||||
| #endif | |||||
| #if __BSD_VISIBLE || __POSIX_VISIBLE <= 200112 | |||||
| __FORTIFY_INLINE char * | |||||
| rindex(const char *_s, int _c) | |||||
| { | |||||
| size_t _bos = __bos(_s); | |||||
| #if !defined(__clang__) | |||||
| size_t _slen; | |||||
| /* Compiler doesn't know destination size. Don't call __strrchr_chk. */ | |||||
| if (_bos == __FORTIFY_UNKNOWN_SIZE) | |||||
| return (__rindex_real(_s, _c)); | |||||
| /* | |||||
| * Compiler can prove, at compile time, that the passed in size | |||||
| * is always <= the actual object size. Don't call __rindex_chk. | |||||
| */ | |||||
| _slen = __builtin_strlen(_s); | |||||
| if (__builtin_constant_p(_slen) && (_slen < _bos)) | |||||
| return (__rindex_real(_s, _c)); | |||||
| #endif | |||||
| return (__rindex_chk(_s, _c, _bos)); | |||||
| } | |||||
| #endif | |||||
| #endif /* !__BSD_FORTIFY */ | |||||
| __END_DECLS | |||||
| #endif /* !defined(_SECURE_STRINGS_H_) */ | |||||