1*57718be8SEnji Cooper /* $NetBSD: exec_prot.h,v 1.1 2011/07/18 23:16:11 jym Exp $ */ 2*57718be8SEnji Cooper 3*57718be8SEnji Cooper /*- 4*57718be8SEnji Cooper * Copyright (c) 2011 The NetBSD Foundation, Inc. 5*57718be8SEnji Cooper * All rights reserved. 6*57718be8SEnji Cooper * 7*57718be8SEnji Cooper * This code is derived from software contributed to The NetBSD Foundation 8*57718be8SEnji Cooper * by Jean-Yves Migeon. 9*57718be8SEnji Cooper * 10*57718be8SEnji Cooper * Redistribution and use in source and binary forms, with or without 11*57718be8SEnji Cooper * modification, are permitted provided that the following conditions 12*57718be8SEnji Cooper * are met: 13*57718be8SEnji Cooper * 1. Redistributions of source code must retain the above copyright 14*57718be8SEnji Cooper * notice, this list of conditions and the following disclaimer. 15*57718be8SEnji Cooper * 2. Redistributions in binary form must reproduce the above copyright 16*57718be8SEnji Cooper * notice, this list of conditions and the following disclaimer in the 17*57718be8SEnji Cooper * documentation and/or other materials provided with the distribution. 18*57718be8SEnji Cooper * 19*57718be8SEnji Cooper * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*57718be8SEnji Cooper * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*57718be8SEnji Cooper * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*57718be8SEnji Cooper * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*57718be8SEnji Cooper * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*57718be8SEnji Cooper * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*57718be8SEnji Cooper * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*57718be8SEnji Cooper * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*57718be8SEnji Cooper * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*57718be8SEnji Cooper * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*57718be8SEnji Cooper * POSSIBILITY OF SUCH DAMAGE. 30*57718be8SEnji Cooper */ 31*57718be8SEnji Cooper 32*57718be8SEnji Cooper #ifndef _TESTS_EXEC_PROT_H_ 33*57718be8SEnji Cooper #define _TESTS_EXEC_PROT_H_ 34*57718be8SEnji Cooper 35*57718be8SEnji Cooper /* 36*57718be8SEnji Cooper * Prototype definitions of external helper functions for executable 37*57718be8SEnji Cooper * mapping tests. 38*57718be8SEnji Cooper */ 39*57718be8SEnji Cooper 40*57718be8SEnji Cooper /* 41*57718be8SEnji Cooper * Trivial MD shellcode that justs returns 1. 42*57718be8SEnji Cooper */ 43*57718be8SEnji Cooper int return_one(void); /* begin marker -- shellcode entry */ 44*57718be8SEnji Cooper int return_one_end(void); /* end marker */ 45*57718be8SEnji Cooper 46*57718be8SEnji Cooper /* 47*57718be8SEnji Cooper * MD callback to verify whether host offers executable space protection. 48*57718be8SEnji Cooper * Returns execute protection level. 49*57718be8SEnji Cooper */ 50*57718be8SEnji Cooper int exec_prot_support(void); 51*57718be8SEnji Cooper 52*57718be8SEnji Cooper /* execute protection level */ 53*57718be8SEnji Cooper enum { 54*57718be8SEnji Cooper NOTIMPL = -1, /* callback not implemented */ 55*57718be8SEnji Cooper NO_XP, /* no execute protection */ 56*57718be8SEnji Cooper PERPAGE_XP, /* per-page execute protection */ 57*57718be8SEnji Cooper PARTIAL_XP /* partial execute protection. Depending on where the 58*57718be8SEnji Cooper page is located in virtual memory, executable space 59*57718be8SEnji Cooper protection may be enforced or not. */ 60*57718be8SEnji Cooper }; 61*57718be8SEnji Cooper #endif 62