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96 lines
2.6 KiB
C
Vendored
96 lines
2.6 KiB
C
Vendored
/*
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* Copyright (c) 2017, 2023 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef __STRINGS_H_
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# error "Never use <secure/_strings.h> directly; include <strings.h> instead."
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#endif
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#ifndef _SECURE__STRINGS_H_
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#define _SECURE__STRINGS_H_
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#include <sys/cdefs.h>
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#include <Availability.h>
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#include <secure/_common.h>
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#if _USE_FORTIFY_LEVEL > 0
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/* bcopy and bzero */
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/* Removed in Issue 7 */
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#if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200809L
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#ifdef __LIBC_STAGED_BOUNDS_SAFETY_ATTRIBUTES
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static inline void
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__bcopy_ptrcheck(const void *_LIBC_SIZE(__n) __src, void *const _LIBC_SIZE(__n) __darwin_pass_obsz0 __dst, size_t __n) {
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memmove(__dst, __src, __n);
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}
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static inline void
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__bzero_ptrcheck(void *const _LIBC_SIZE(__n) __darwin_pass_obsz0 __dst, size_t __n) {
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memset(__dst, 0, __n);
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}
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#define __bcopy_chk_func __bcopy_ptrcheck
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#define __bzero_chk_func __bzero_ptrcheck
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#else
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#ifndef __has_builtin
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#define __undef__has_builtin
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#define __has_builtin(x) defined(__GNUC__)
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#endif
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#if __has_builtin(__builtin___memmove_chk)
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#define __bcopy_chk_func(src, dst, ...) \
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__builtin___memmove_chk(dst, src, __VA_ARGS__, __darwin_obsz0 (dst))
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#endif
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#if __has_builtin(__builtin___memset_chk)
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#define __bzero_chk_func(dst, ...) \
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__builtin___memset_chk(dst, 0, __VA_ARGS__, __darwin_obsz0 (dst))
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#endif
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#ifdef __undef__has_builtin
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#undef __undef__has_builtin
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#undef __has_builtin
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#endif
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#endif
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#ifdef __bcopy_chk_func
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#undef bcopy
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/* void bcopy(const void *src, void *dst, size_t len) */
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#define bcopy(...) __bcopy_chk_func (__VA_ARGS__)
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#endif
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#ifdef __bzero_chk_func
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#undef bzero
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/* void bzero(void *s, size_t n) */
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#define bzero(...) __bzero_chk_func (__VA_ARGS__)
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#endif
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#endif
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#endif /* _USE_FORTIFY_LEVEL > 0 */
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#endif /* _SECURE__STRINGS_H_ */
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