ssp.h revision 1.1
1 1.1 tls /* $NetBSD: ssp.h,v 1.1 2007/05/30 01:17:35 tls Exp $ */ 2 1.1 tls 3 1.1 tls /*- 4 1.1 tls * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 1.1 tls * All rights reserved. 6 1.1 tls * 7 1.1 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.1 tls * by Christos Zoulas. 9 1.1 tls * 10 1.1 tls * Redistribution and use in source and binary forms, with or without 11 1.1 tls * modification, are permitted provided that the following conditions 12 1.1 tls * are met: 13 1.1 tls * 1. Redistributions of source code must retain the above copyright 14 1.1 tls * notice, this list of conditions and the following disclaimer. 15 1.1 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 tls * notice, this list of conditions and the following disclaimer in the 17 1.1 tls * documentation and/or other materials provided with the distribution. 18 1.1 tls * 3. All advertising materials mentioning features or use of this software 19 1.1 tls * must display the following acknowledgement: 20 1.1 tls * This product includes software developed by the NetBSD 21 1.1 tls * Foundation, Inc. and its contributors. 22 1.1 tls * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1 tls * contributors may be used to endorse or promote products derived 24 1.1 tls * from this software without specific prior written permission. 25 1.1 tls * 26 1.1 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1 tls * POSSIBILITY OF SUCH DAMAGE. 37 1.1 tls */ 38 1.1 tls #ifndef _SSP_SSP_H_ 39 1.1 tls #define _SSP_SSP_H_ 40 1.1 tls 41 1.1 tls #include <sys/cdefs.h> 42 1.1 tls 43 1.1 tls #if !defined(__cplusplus) 44 1.1 tls # if _FORTIFY_SOURCE > 0 && __OPTIMIZE__ > 0 && __GNUC_PREREQ__(4, 1) 45 1.1 tls # if _FORTIFY_SOURCE > 1 46 1.1 tls # define __SSP_FORTIFY_LEVEL 2 47 1.1 tls # else 48 1.1 tls # define __SSP_FORTIFY_LEVEL 1 49 1.1 tls # endif 50 1.1 tls # endif 51 1.1 tls #endif 52 1.1 tls 53 1.1 tls #define __ssp_bos(ptr) __builtin_object_size(ptr, __SSP_FORTIFY_LEVEL > 1) 54 1.1 tls #define __ssp_bos0(ptr) __builtin_object_size(ptr, 0) 55 1.1 tls #define __ssp_redirect_raw(rtype, fun, args, call, bos) \ 56 1.1 tls static __inline __attribute__((__always_inline__)) rtype __ ## fun ## _alias args; \ 57 1.1 tls static __inline __attribute__((__always_inline__)) rtype \ 58 1.1 tls __ ## fun ## _alias args { \ 59 1.1 tls if (bos(__buf) != (size_t)-1 && __len > bos(__buf)) \ 60 1.1 tls __chk_fail(); \ 61 1.1 tls return fun call; \ 62 1.1 tls } 63 1.1 tls 64 1.1 tls #define __ssp_redirect(rtype, fun, args, call) \ 65 1.1 tls __ssp_redirect_raw(rtype, fun, args, call, __ssp_bos) 66 1.1 tls #define __ssp_redirect0(rtype, fun, args, call) \ 67 1.1 tls __ssp_redirect_raw(rtype, fun, args, call, __ssp_bos0) 68 1.1 tls 69 1.1 tls __BEGIN_DECLS 70 1.1 tls void __stack_chk_fail(void) __attribute__((__noreturn__)); 71 1.1 tls void __chk_fail(void) __attribute__((__noreturn__)); 72 1.1 tls __END_DECLS 73 1.1 tls 74 1.1 tls #endif /* _SSP_SSP_H_ */ 75
Indexes created Sat Sep 27 21:09:56 GMT 2025