Differential D3459 Diff 8407 include/secure/security.h

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include/secure/security.h

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				/*-
				* Copyright (c) 2015 Olivér Pintér
				* All rights reserved.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. 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 AUTHOR 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 AUTHOR 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 _SECURE_SECURITY_
				#define _SECURE_SECURITY_

				#include <sys/cdefs.h>
				#include <sys/types.h>

				#ifndef __clang__
				#if __GNUC_PREREQ__(4, 3)
				#define __errordecl(name, msg) extern void name(void) __error_attr(msg)
				#else
				#define __errordecl(name, msg) \
				static void name(void) __dead2; \
				static void name(void) \
				{ \
				\
				__fortify_chk_fail(msg); \
				}
				#endif /* __GNUC_PREREQ(4, 3) */
				#else /* !__clang__ */
				#define __errordecl(name, msg)
				#endif /* !__clang__ */

				#define __RENAME(x) __asm__(#x)

				#if __GNUC_PREREQ__(5, 0) \|\| __has_builtin(__builtin_umul_overflow)
				#if __LP64__
				#define __size_mul_overflow(a, b, result) __builtin_umull_overflow(a, b, result)
				#else
				#define __size_mul_overflow(a, b, result) __builtin_umul_overflow(a, b, result)
				#endif
				#else
				static __inline __always_inline int
				__size_mul_overflow(__SIZE_TYPE__ a, __SIZE_TYPE__ b, __SIZE_TYPE__ *result)
				{
				static const __SIZE_TYPE__ mul_no_overflow = 1UL << (sizeof(__SIZE_TYPE__) * 4);

				theravenUnsubmitted Not Done Inline Actions mul_no_overflow is an identifier that is valid for user programs to use and so should not be used in a system header. theraven: mul_no_overflow is an identifier that is valid for user programs to use and so should not be…
				result = a b;

				return (a >= mul_no_overflow \|\| b >= mul_no_overflow) && a > 0 && (__SIZE_TYPE__)-1 / a < b;
				}
				#endif

				static __inline __always_inline int
				__fortify_chk_overlap(const char a, const char b, size_t len)
				{

				return ((uintptr_t)(a) < (uintptr_t)(b + len) &&
				(uintptr_t)(a + len) > (uintptr_t)(b));
				}

				__BEGIN_DECLS

				/* Common fail function. */
				void __secure_fail(const char *msg) __dead2 __nonnull(1);

				/* SSP related fail functions. */
				void __chk_fail(void) __dead2;
				void __stack_chk_fail(void) __dead2;

				/* FORTIFY_SOURCE related fail function. */
				void __fortify_chk_fail(const char* msg) __dead2 __nonnull(1);

				__END_DECLS

				#endif /* !_SECURE_SECURITY_ */