1*11be35a1SLionel Sambuc /* $NetBSD: exec_prot.h,v 1.1 2011/07/18 23:16:11 jym Exp $ */ 2*11be35a1SLionel Sambuc 3*11be35a1SLionel Sambuc /*- 4*11be35a1SLionel Sambuc * Copyright (c) 2011 The NetBSD Foundation, Inc. 5*11be35a1SLionel Sambuc * All rights reserved. 6*11be35a1SLionel Sambuc * 7*11be35a1SLionel Sambuc * This code is derived from software contributed to The NetBSD Foundation 8*11be35a1SLionel Sambuc * by Jean-Yves Migeon. 9*11be35a1SLionel Sambuc * 10*11be35a1SLionel Sambuc * Redistribution and use in source and binary forms, with or without 11*11be35a1SLionel Sambuc * modification, are permitted provided that the following conditions 12*11be35a1SLionel Sambuc * are met: 13*11be35a1SLionel Sambuc * 1. Redistributions of source code must retain the above copyright 14*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer. 15*11be35a1SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright 16*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer in the 17*11be35a1SLionel Sambuc * documentation and/or other materials provided with the distribution. 18*11be35a1SLionel Sambuc * 19*11be35a1SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*11be35a1SLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*11be35a1SLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*11be35a1SLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*11be35a1SLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*11be35a1SLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*11be35a1SLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*11be35a1SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*11be35a1SLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*11be35a1SLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*11be35a1SLionel Sambuc * POSSIBILITY OF SUCH DAMAGE. 30*11be35a1SLionel Sambuc */ 31*11be35a1SLionel Sambuc 32*11be35a1SLionel Sambuc #ifndef _TESTS_EXEC_PROT_H_ 33*11be35a1SLionel Sambuc #define _TESTS_EXEC_PROT_H_ 34*11be35a1SLionel Sambuc 35*11be35a1SLionel Sambuc /* 36*11be35a1SLionel Sambuc * Prototype definitions of external helper functions for executable 37*11be35a1SLionel Sambuc * mapping tests. 38*11be35a1SLionel Sambuc */ 39*11be35a1SLionel Sambuc 40*11be35a1SLionel Sambuc /* 41*11be35a1SLionel Sambuc * Trivial MD shellcode that justs returns 1. 42*11be35a1SLionel Sambuc */ 43*11be35a1SLionel Sambuc int return_one(void); /* begin marker -- shellcode entry */ 44*11be35a1SLionel Sambuc int return_one_end(void); /* end marker */ 45*11be35a1SLionel Sambuc 46*11be35a1SLionel Sambuc /* 47*11be35a1SLionel Sambuc * MD callback to verify whether host offers executable space protection. 48*11be35a1SLionel Sambuc * Returns execute protection level. 49*11be35a1SLionel Sambuc */ 50*11be35a1SLionel Sambuc int exec_prot_support(void); 51*11be35a1SLionel Sambuc 52*11be35a1SLionel Sambuc /* execute protection level */ 53*11be35a1SLionel Sambuc enum { 54*11be35a1SLionel Sambuc NOTIMPL = -1, /* callback not implemented */ 55*11be35a1SLionel Sambuc NO_XP, /* no execute protection */ 56*11be35a1SLionel Sambuc PERPAGE_XP, /* per-page execute protection */ 57*11be35a1SLionel Sambuc PARTIAL_XP /* partial execute protection. Depending on where the 58*11be35a1SLionel Sambuc page is located in virtual memory, executable space 59*11be35a1SLionel Sambuc protection may be enforced or not. */ 60*11be35a1SLionel Sambuc }; 61*11be35a1SLionel Sambuc #endif 62