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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
106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/* $NetBSD: stdio.h,v 1.5 2011/07/17 20:54:34 joerg 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) 2006 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_STDIO_H_
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#define _SSP_STDIO_H_
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#include <ssp/ssp.h>
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__BEGIN_DECLS
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#if __SSP_FORTIFY_LEVEL > 0
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#if __POSIX_VISIBLE
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__ssp_redirect_raw(char *, ctermid, ctermid, (char *__buf), (__buf),
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__buf != NULL, __ssp_bos, L_ctermid);
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#if __BSD_VISIBLE
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__ssp_redirect_raw(char *, ctermid_r, ctermid_r, (char *__buf), (__buf),
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__buf != NULL, __ssp_bos, L_ctermid);
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#endif /* __BSD_VISIBLE */
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#endif /* __POSIX_VISIBLE */
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__ssp_redirect(size_t, fread, (void *__restrict __buf, size_t __len,
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size_t __nmemb, FILE *__restrict __fp), (__buf, __len, __nmemb, __fp));
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__ssp_redirect(size_t, fread_unlocked, (void *__restrict __buf, size_t __len,
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size_t __nmemb, FILE *__restrict __fp), (__buf, __len, __nmemb, __fp));
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__ssp_redirect(char *, gets_s, (char *__buf, rsize_t __len), (__buf, __len));
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__ssp_redirect_raw(char *, tmpnam, tmpnam, (char *__buf), (__buf), 1,
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__ssp_bos, L_tmpnam);
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#endif
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int __sprintf_chk(char *__restrict, int, size_t, const char *__restrict, ...)
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__printflike(4, 5);
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int __vsprintf_chk(char *__restrict, int, size_t, const char *__restrict,
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__va_list)
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__printflike(4, 0);
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int __snprintf_chk(char *__restrict, size_t, int, size_t,
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const char *__restrict, ...)
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__printflike(5, 6);
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int __vsnprintf_chk(char *__restrict, size_t, int, size_t,
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const char *__restrict, __va_list)
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__printflike(5, 0);
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char *__fgets_chk(char *, int, size_t, FILE *);
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__END_DECLS
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#if __SSP_FORTIFY_LEVEL > 0
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#define sprintf(str, ...) __extension__ ({ \
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char *_ssp_str = (str); \
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__builtin___sprintf_chk(_ssp_str, 0, __ssp_bos(_ssp_str), \
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__VA_ARGS__); \
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})
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#define vsprintf(str, fmt, ap) __extension__ ({ \
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char *_ssp_str = (str); \
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__builtin___vsprintf_chk(_ssp_str, 0, __ssp_bos(_ssp_str), fmt, \
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ap); \
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})
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#define snprintf(str, len, ...) __extension__ ({ \
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char *_ssp_str = (str); \
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__builtin___snprintf_chk(_ssp_str, len, 0, __ssp_bos(_ssp_str), \
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__VA_ARGS__); \
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})
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#define vsnprintf(str, len, fmt, ap) __extension__ ({ \
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char *_ssp_str = (str); \
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__builtin___vsnprintf_chk(_ssp_str, len, 0, __ssp_bos(_ssp_str), \
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fmt, ap); \
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})
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#define fgets(str, len, fp) __extension__ ({ \
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char *_ssp_str = (str); \
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__fgets_chk(_ssp_str, len, __ssp_bos(_ssp_str), fp); \
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})
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#endif /* __SSP_FORTIFY_LEVEL > 0 */
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#endif /* _SSP_STDIO_H_ */
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