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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
73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/* $NetBSD: strings.h,v 1.3 2008/04/28 20:22:54 martin Exp $ */
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/*-
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SSP_STRINGS_H_
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#define _SSP_STRINGS_H_
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#include <ssp/ssp.h>
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#include <string.h>
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#if __SSP_FORTIFY_LEVEL > 0
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#define _ssp_bcopy(srcvar, src, dstvar, dst, lenvar, len) __extension__ ({ \
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const void *srcvar = (src); \
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void *dstvar = (dst); \
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size_t lenvar = (len); \
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((__ssp_bos0(dstvar) != (size_t)-1) ? \
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__builtin___memmove_chk(dstvar, srcvar, lenvar, \
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__ssp_bos0(dstvar)) : \
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__memmove_ichk(dstvar, srcvar, lenvar)); \
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})
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#define bcopy(src, dst, len) \
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_ssp_bcopy(__ssp_var(srcv), src, __ssp_var(dstv), dst, __ssp_var(lenv), len)
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#define _ssp_bzero(dstvar, dst, lenvar, len) __extension__ ({ \
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void *dstvar = (dst); \
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size_t lenvar = (len); \
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((__ssp_bos0(dstvar) != (size_t)-1) ? \
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__builtin___memset_chk(dstvar, 0, lenvar, \
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__ssp_bos0(dstvar)) : \
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__memset_ichk(dstvar, 0, lenvar)); \
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})
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#define bzero(dst, len) _ssp_bzero(__ssp_var(dstv), dst, __ssp_var(lenv), len)
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__BEGIN_DECLS
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__ssp_redirect(void, explicit_bzero, (void *__buf, size_t __len),
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(__buf, __len));
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__END_DECLS
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#endif /* __SSP_FORTIFY_LEVEL > 0 */
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#endif /* _SSP_STRINGS_H_ */
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