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cf8e5289a1
ssp/ssp.h needed some improvements:
- `len` isn't always a size_t, it may need casted
- In some cases we may want to use a len that isn't specified as a
parameter (e.g., L_ctermid), so __ssp_redirect() should be more
flexible.
- In other cases we may want additional checking, so pull all of the
declaration bits out of __ssp_redirect_raw() so that some functions
can implement the body themselves.
strlcat/strlcpy should be the last of the fortified functions that get
their own __*_chk symbols, and these cases are only done to be
consistent with the rest of the str*() set.
Reviewed by: markj
Sponsored by: Klara, Inc.
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D45679
28 lines
521 B
C
28 lines
521 B
C
/* $OpenBSD: explicit_bzero.c,v 1.3 2014/06/21 02:34:26 matthew Exp $ */
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/*
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* Public domain.
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* Written by Matthew Dempsky.
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*/
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#include <sys/cdefs.h>
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#ifdef _KERNEL
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#include <sys/libkern.h>
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#else
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#include <string.h>
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#include <ssp/ssp.h>
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#endif /* _KERNEL */
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__attribute__((weak)) void __explicit_bzero_hook(void *, size_t);
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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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void
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__ssp_real(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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