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Add a BSD-licensed re-implementation of the gcc-4.1 libssp.

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This adds bounds checking for the following functions:

    memset, fgets, gets, memcpy, memmove, memset, snprintf, sprintf, strcat,
    strcpy, strncat, strncpy, vsnprintf, vsprintf

This functionality is enabled by compiling with:

	gcc -I/usr/include/ssp -D_FORTIFY_SOURCE=<1|2> -lssp

Eventually gcc will provide -ffortify-source or something to automate this
[we hope :-)]
This commit is contained in:
christos 2006-11-08 19:52:11 +00:00
parent 3f8c6dc981
commit f499cd524a
18 changed files with 1104 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
lib/libssp/Makefile Normal file
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# $NetBSD: Makefile,v 1.1 2006/11/08 19:52:11 christos Exp $
USE_SHLIBDIR= yes
WARNS=4
CPPFLAGS+=-I${.CURDIR}/ssp
LIB= ssp
SRCS= gets_chk.c fgets_chk.c memcpy_chk.c memmove_chk.c memset_chk.c \
snprintf_chk.c sprintf_chk.c strcat_chk.c strcpy_chk.c \
strncat_chk.c strncpy_chk.c vsnprintf_chk.c vsprintf_chk.c
INCS= ssp/ssp.h ssp/stdio.h ssp/string.h ssp/unistd.h
INCSDIR=/usr/include
.include <bsd.own.mk>
.include <bsd.shlib.mk>
.include <bsd.lib.mk>

57
lib/libssp/fgets_chk.c Normal file
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/* $NetBSD: fgets_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: fgets_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <stdlib.h>
char *
__fgets_chk(char * __restrict buf, int len, size_t slen, FILE *fp)
{
if (slen >= (size_t)INT_MAX)
return fgets(buf, len, fp);
if (len >= 0 && len > slen)
__chk_fail();
return fgets(buf, len, fp);
}

74
lib/libssp/gets_chk.c Normal file
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/* $NetBSD: gets_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: gets_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <stdlib.h>
char *
__gets_chk(char * __restrict buf, size_t slen)
{
char *abuf;
size_t len;
if (slen >= (size_t)INT_MAX)
return gets(buf);
if ((abuf = malloc(slen + 1)) == NULL)
return gets(buf);
if (fgets(abuf, (int)(slen + 1), stdin) == NULL)
return NULL;
len = strlen(abuf);
if (len > 0 && abuf[len - 1] == '\n')
--len;
if (len >= slen)
__chk_fail();
(void)memcpy(buf, abuf, len);
buf[len] = '\0';
free(abuf);
return buf;
}

51
lib/libssp/memcpy_chk.c Normal file
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/* $NetBSD: memcpy_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: memcpy_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
void *
__memcpy_chk(void * __restrict dst, const void * __restrict src, size_t len,
size_t slen)
{
if (len > slen)
__chk_fail();
return memcpy(dst, src, len);
}

51
lib/libssp/memmove_chk.c Normal file
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/* $NetBSD: memmove_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: memmove_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
void *
__memmove_chk(void *dst, void *src, size_t len,
size_t slen)
{
if (len > slen)
__chk_fail();
return memmove(dst, src, len);
}

50
lib/libssp/memset_chk.c Normal file
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/* $NetBSD: memset_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: memset_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
void *
__memset_chk(void * __restrict dst, int val, size_t len, size_t slen)
{
if (len > slen)
__chk_fail();
return memset(dst, val, len);
}

61
lib/libssp/snprintf_chk.c Normal file
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/* $NetBSD: snprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: snprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <stdio.h>
#include <stdarg.h>
/*ARGSUSED*/
int
__snprintf_chk(char * __restrict buf, size_t len, int flags, size_t slen,
const char * __restrict fmt, ...)
{
va_list ap;
int rv;
if (len > slen)
__chk_fail();
va_start(ap, fmt);
rv = vsnprintf(buf, len, fmt, ap);
va_end(ap);
return rv;
}

64
lib/libssp/sprintf_chk.c Normal file
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/* $NetBSD: sprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: sprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <stdio.h>
#include <limits.h>
#include <stdarg.h>
int
/*ARGSUSED*/
__sprintf_chk(char * __restrict buf, int flags, size_t slen,
const char * __restrict fmt, ...)
{
va_list ap;
int rv;
va_start(ap, fmt);
if (slen > (size_t)INT_MAX)
rv = vsprintf(buf, fmt, ap);
else {
if ((rv = vsnprintf(buf, slen, fmt, ap)) >= 0 && rv >= slen)
__chk_fail();
}
va_end(ap);
return rv;
}

74
lib/libssp/ssp/ssp.h Normal file
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/* $NetBSD: ssp.h,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SSP_SSP_H_
#define _SSP_SSP_H_
#include <sys/cdefs.h>
#if !defined(__cplusplus)
# if _FORTIFY_SOURCE > 0 && __OPTIMIZE__ > 0 && __GNUC_PREREQ__(4, 1)
# if _FORTIFY_SOURCE > 1
# define __SSP_FORTIFY_LEVEL 2
# else
# define __SSP_FORTIFY_LEVEL 1
# endif
# endif
#endif
#define __ssp_bos(ptr) __builtin_object_size(ptr, __SSP_FORTIFY_LEVEL > 1)
#define __ssp_bos0(ptr) __builtin_object_size(ptr, 0)
#define __ssp_redirect_raw(rtype, fun, args, call, bos) \
inline __attribute__((__always_inline__)) rtype __ ## fun ## _alias args; \
inline __attribute__((__always_inline__)) rtype \
__ ## fun ## _alias args { \
if (bos(__buf) != (size_t)-1 && __len > bos(__buf)) \
__chk_fail(); \
return fun call; \
}
#define __ssp_redirect(rtype, fun, args, call) \
__ssp_redirect_raw(rtype, fun, args, call, __ssp_bos)
#define __ssp_redirect0(rtype, fun, args, call) \
__ssp_redirect_raw(rtype, fun, args, call, __ssp_bos0)
__BEGIN_DECLS
void __stack_chk_fail(void) __attribute__((__noreturn__));
void __chk_fail(void) __attribute__((__noreturn__));
__END_DECLS
#endif /* _SSP_SSP_H_ */

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/* $NetBSD: stdio.h,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SSP_STDIO_H_
#define _SSP_STDIO_H_
#include <ssp.h>
#include_next <stdio.h>
__BEGIN_DECLS
int __sprintf_chk(char *__restrict, int, size_t, const char *__restrict, ...)
__attribute__((__format__(__printf__, 4, 5)));
int __vsprintf_chk(char *__restrict, int, size_t, const char *__restrict,
_BSD_VA_LIST_) __attribute__((__format__(__printf__, 4, 0)));
int __snprintf_chk(char *__restrict, size_t, int, size_t,
const char *__restrict, ...) __attribute__((__format__(__printf__, 5, 6)));
int __vnsprintf_chk(char *__restrict, int, size_t, const char *__restrict,
_BSD_VA_LIST_) __attribute__((__format__(__printf__, 5, 0)));
char *__gets_chk(char *, size_t);
char *__fgets_chk(char *, int, size_t, FILE *);
__END_DECLS
#if __SSP_FORTIFY_LEVEL > 0
#define sprintf(str, ...) \
__builtin___sprintf_chk(str, 0, __ssp_bos(str), __VA_ARGS__)
#define vsprintf(str, fmt, ap) \
__builtin___vsprintf_chk(str, 0, __ssp_bos(str), fmt, ap)
#define snprintf(str, len, ...) \
__builtin___snprintf_chk(str, len, 0, __ssp_bos(str), __VA_ARGS__)
#define vsnprintf(str, len, fmt, ap) \
__builtin___vsnprintf_chk(str, len, 0, __ssp_bos(str), fmt, ap)
#define gets(str) \
__gets_chk(str, __ssp_bos(str))
#define fgets(str, len, fp) \
__fgets_chk(str, len, __ssp_bos(str), fp)
#endif /* __SSP_FORTIFY_LEVEL > 0 */
#endif /* _SSP_STDIO_H_ */

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/* $NetBSD: string.h,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SSP_STRING_H_
#define _SSP_STRING_H_
#include <ssp.h>
#include_next <string.h>
#if __SSP_FORTIFY_LEVEL > 0
#define __ssp_bos_check3(fun, dst, src, len) \
((__ssp_bos0(dst) != (size_t)-1) ? \
__builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \
__ ## fun ## _ichk(dst, src, len))
#define __ssp_bos_check2(fun, dst, src) \
((__ssp_bos0(dst) != (size_t)-1) ? \
__builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \
__ ## fun ## _ichk(dst, src))
#define __ssp_bos_icheck3_restrict(fun, type1, type2) \
type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \
inline __attribute__((__always_inline__)) type1 \
__ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \
return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \
}
#define __ssp_bos_icheck3(fun, type1, type2) \
type1 __ ## fun ## _ichk(type1, type2, size_t); \
inline __attribute__((__always_inline__)) type1 \
__ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \
return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \
}
#define __ssp_bos_icheck2_restrict(fun, type1, type2) \
type1 __ ## fun ## _ichk(type1, type2); \
inline __attribute__((__always_inline__)) type1 \
__ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \
return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \
}
__BEGIN_DECLS
__ssp_bos_icheck3_restrict(memcpy, void *, const void *)
__ssp_bos_icheck3(memmove, void *, const void *)
__ssp_bos_icheck3(memset, void *, int)
__ssp_bos_icheck2_restrict(strcpy, char *, const char *)
__ssp_bos_icheck2_restrict(strcat, char *, const char *)
__ssp_bos_icheck3_restrict(strncpy, char *, const char *)
__ssp_bos_icheck3_restrict(strncat, char *, const char *)
__END_DECLS
#define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len)
#define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len)
#define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len)
#define bcopy(src, dst, len) \
((__ssp_bos0(dst) != (size_t)-1) ? \
__builtin___memmove_chk(dst, src, __ssp_bos0(dst)) : \
__memmove_ichk(dst, src, len))
#define bzero(dst, len) \
((__ssp_bos0(dst) != (size_t)-1) ? \
__builtin___memset_chk(dst, 0, __ssp_bos0(dst)) : \
__memset_ichk(dst, src, len))
#define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src)
#define strcat(dst, src) __ssp_bos_check2(strcat, dst, src)
#define strncpy(dst, src, lne) __ssp_bos_check3(strncpy, dst, src, len)
#define strncat(dst, src, lne) __ssp_bos_check3(strncat, dst, src, len)
#endif /* __SSP_FORTIFY_LEVEL > 0 */
#endif /* _SSP_STRING_H_ */

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/* $NetBSD: unistd.h,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SSP_UNISTD_H_
#define _SSP_UNISTD_H_
#include <ssp.h>
#include_next <unistd.h>
#if __SSP_FORTIFY_LEVEL > 0
__BEGIN_DECLS
__ssp_redirect0(ssize_t, read, (int __fd, void *__buf, size_t __len), \
(__fd, __buf, __len));
__ssp_redirect(int, readlink, (const char *__restrict __path, \
char *__restrict __buf, size_t __len), (__path, __buf, __len));
__ssp_redirect(char *, getcwd, (char *__buf, size_t __len), (__buf, __len));
__END_DECLS
#define read(fd, buf, len) __read_alias(fd, buf, len)
#define readlink(path, buf, len) __readlink_alias(path, buf, len)
#define getcwd(buf, len) __getcwd_alias(buf, len)
#endif /* __SSP_FORTIFY_LEVEL > 0 */
#endif /* _SSP_UNISTD_H_ */

65
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/* $NetBSD: strcat_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: strcat_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
char *
__strcat_chk(char * __restrict dst, char * __restrict src, size_t slen)
{
char *d;
for (d = dst; *d; d++) {
if (slen-- == 0)
__chk_fail();
}
while (*src) {
if (slen-- == 0)
__chk_fail();
*d++ = *src++;
}
if (slen-- == 0)
__chk_fail();
*d = '\0';
return dst;
}

53
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/* $NetBSD: strcpy_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: strcpy_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
char *
__strcpy_chk(char * __restrict dst, const char * __restrict src, size_t slen)
{
size_t len = strlen(src);
if (len > slen)
__chk_fail();
return memcpy(dst, src, len + 1);
}

75
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/* $NetBSD: strncat_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: strncat_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
#include <stdio.h>
char *
__strncat_chk(char * __restrict dst, char * __restrict src, size_t len,
size_t slen)
{
char *d;
if (len == 0)
return dst;
if (len > slen)
__chk_fail();
for (d = dst; *d; d++) {
if (slen-- == 0)
__chk_fail();
}
do {
if ((*d = *src++) == '\0')
break;
if (slen-- == 0)
__chk_fail();
d++;
} while (--len != 0);
if (slen-- == 0)
__chk_fail();
*d = '\0';
return dst;
}

52
lib/libssp/strncpy_chk.c Normal file
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/* $NetBSD: strncpy_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: strncpy_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <string.h>
char *
__strncpy_chk(char * __restrict dst, const char * __restrict src, size_t len,
size_t slen)
{
if (len > slen)
__chk_fail();
return strncpy(dst, src, len);
}

53
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/* $NetBSD: vsnprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: vsnprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <stdio.h>
#include <stdarg.h>
int
__vsnprintf_chk(char * __restrict buf, size_t len, int flags, size_t slen,
const char * __restrict fmt, va_list ap)
{
if (len > slen)
__chk_fail();
return vsnprintf(buf, len, fmt, ap);
}

61
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/* $NetBSD: vsprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: vsprintf_chk.c,v 1.1 2006/11/08 19:52:11 christos Exp $");
#include <ssp.h>
#include <stdio.h>
#include <limits.h>
#include <stdarg.h>
/*ARGSUSED*/
int
__vsprintf_chk(char * __restrict buf, int flags, size_t slen,
const char * __restrict fmt, va_list ap)
{
int rv;
if (slen > (size_t)INT_MAX)
rv = vsprintf(buf, fmt, ap);
else {
if ((rv = vsnprintf(buf, slen, fmt, ap)) >= 0 && rv >= slen)
__chk_fail();
}
return rv;
}