6b11077f09
Cc: Christian Göttsche <cgzones@googlemail.com> Cc: Serge Hallyn <serge@hallyn.com> Cc: Iker Pedrosa <ipedrosa@redhat.com> Signed-off-by: Alejandro Colomar <alx@kernel.org>
34 lines
855 B
C
34 lines
855 B
C
/*
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* SPDX-FileCopyrightText: 2022-2023, Christian Göttsche <cgzones@googlemail.com>
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SHADOW_INCLUDE_LIBMISC_MEMZERO_H_
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#define SHADOW_INCLUDE_LIBMISC_MEMZERO_H_
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#include <config.h>
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#include <stddef.h>
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#include <string.h>
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#include <strings.h>
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#ifdef HAVE_MEMSET_EXPLICIT
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# define memzero(ptr, size) memset_explicit((ptr), 0, (size))
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#elif defined HAVE_EXPLICIT_BZERO /* !HAVE_MEMSET_S */
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# define memzero(ptr, size) explicit_bzero((ptr), (size))
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#else /* !HAVE_MEMSET_S && HAVE_EXPLICIT_BZERO */
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static inline void memzero(void *ptr, size_t size)
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{
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ptr = memset(ptr, '\0', size);
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__asm__ __volatile__ ("" : : "r"(ptr) : "memory");
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}
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#endif /* !HAVE_MEMSET_S && !HAVE_EXPLICIT_BZERO */
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#define strzero(s) memzero(s, strlen(s)) /* warning: evaluates twice */
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#endif // include guard
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