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04b4b595d3
explicit_bzero() is available as an API to clean up sensitive data and avoid compiler optimizations that remove calls to memset() or bzero(). Signed-off-by: Loganaden Velvindron <logan@cyberstorm.mu>
40 lines
604 B
C
40 lines
604 B
C
/*
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* Public domain.
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* Written by Matthew Dempsky.
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* Adapted for frr.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#ifndef HAVE_EXPLICIT_BZERO
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#undef explicit_bzero
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void explicit_bzero(void *buf, size_t len);
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__attribute__((__weak__)) void
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__explicit_bzero_hook(void *buf, size_t len);
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__attribute__((__weak__)) void
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__explicit_bzero_hook(void *buf, size_t len)
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{
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}
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#if defined(__clang__)
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#pragma clang optimize off
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#else
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#pragma GCC optimize("00")
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#endif
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void
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explicit_bzero(void *buf, size_t len)
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{
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memset(buf, 0, len);
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__explicit_bzero_hook(buf, len);
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}
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#endif
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