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NetBSD/include/ssp/ssp.h

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proved an __ssp_check macro.
2011-01-25 22:13:44 +03:00
/* $NetBSD: ssp.h,v 1.7 2011/01/25 19:13:44 christos Exp $ */
Add a BSD-licensed re-implementation of the gcc-4.1 libssp. 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 :-)]
2006-11-08 22:52:11 +03:00
/*-
* 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.
*
* 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
Use the _sys alias instead of the _ alias as the way to access the baseline syscall.
2011-01-20 05:58:17 +03:00
#ifdef _NAMESPACE_H_
#define __ssp_weak_name(fun) _sys ## fun
#else
#define __ssp_weak_name(fun) _sys_ ## fun
#endif
- Misc cleanups to make the code more readable. - Detect if we are compiling in libc and provide the appropriate name.
2007-06-03 21:41:19 +04:00
#define __ssp_inline static __inline __attribute__((__always_inline__))
Re-do ssp hijacking by defining inline functions and using the weak libc symbols to do the indirection for unistd.h instead of #define tricks. Fixes compilation for things that define struct { ssize_t read(int fd, ...); }.
2011-01-19 22:21:29 +03:00
Add a BSD-licensed re-implementation of the gcc-4.1 libssp. 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 :-)]
2006-11-08 22:52:11 +03:00
#define __ssp_bos(ptr) __builtin_object_size(ptr, __SSP_FORTIFY_LEVEL > 1)
#define __ssp_bos0(ptr) __builtin_object_size(ptr, 0)
Re-do ssp hijacking by defining inline functions and using the weak libc symbols to do the indirection for unistd.h instead of #define tricks. Fixes compilation for things that define struct { ssize_t read(int fd, ...); }.
2011-01-19 22:21:29 +03:00
proved an __ssp_check macro.
2011-01-25 22:13:44 +03:00
#define __ssp_check(buf, len, bos) \
if (bos(buf) != (size_t)-1 && len > bos(buf)) \
__chk_fail()
Add a BSD-licensed re-implementation of the gcc-4.1 libssp. 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 :-)]
2006-11-08 22:52:11 +03:00
#define __ssp_redirect_raw(rtype, fun, args, call, bos) \
Re-do ssp hijacking by defining inline functions and using the weak libc symbols to do the indirection for unistd.h instead of #define tricks. Fixes compilation for things that define struct { ssize_t read(int fd, ...); }.
2011-01-19 22:21:29 +03:00
rtype __ssp_weak_name(fun) args; \
__ssp_inline rtype fun args; \
__ssp_inline rtype fun args { \
proved an __ssp_check macro.
2011-01-25 22:13:44 +03:00
__ssp_check(__buf, __len, bos); \
Re-do ssp hijacking by defining inline functions and using the weak libc symbols to do the indirection for unistd.h instead of #define tricks. Fixes compilation for things that define struct { ssize_t read(int fd, ...); }.
2011-01-19 22:21:29 +03:00
return __ssp_weak_name(fun) call; \
Use __dead instead of __attribute__((__noreturn__)) directly.
2010-12-22 22:43:33 +03:00
}
Add a BSD-licensed re-implementation of the gcc-4.1 libssp. 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 :-)]
2006-11-08 22:52:11 +03:00
#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
Use __dead instead of __attribute__((__noreturn__)) directly.
2010-12-22 22:43:33 +03:00
void __stack_chk_fail(void) __dead;
void __chk_fail(void) __dead;
Add a BSD-licensed re-implementation of the gcc-4.1 libssp. 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 :-)]
2006-11-08 22:52:11 +03:00
__END_DECLS
#endif /* _SSP_SSP_H_ */