1272343Sngie/* $NetBSD: exec_prot_support.c,v 1.1 2011/07/18 23:16:11 jym Exp $ */ 2272343Sngie 3272343Sngie/*- 4272343Sngie * Copyright (c) 2011 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * This code is derived from software contributed to The NetBSD Foundation 8272343Sngie * by Jean-Yves Migeon. 9272343Sngie * 10272343Sngie * Redistribution and use in source and binary forms, with or without 11272343Sngie * modification, are permitted provided that the following conditions 12272343Sngie * are met: 13272343Sngie * 1. Redistributions of source code must retain the above copyright 14272343Sngie * notice, this list of conditions and the following disclaimer. 15272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 16272343Sngie * notice, this list of conditions and the following disclaimer in the 17272343Sngie * documentation and/or other materials provided with the distribution. 18272343Sngie * 19272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29272343Sngie * POSSIBILITY OF SUCH DAMAGE. 30272343Sngie */ 31272343Sngie 32272343Sngie#include <sys/cdefs.h> 33272343Sngie__RCSID("$NetBSD: exec_prot_support.c,v 1.1 2011/07/18 23:16:11 jym Exp $"); 34272343Sngie 35272343Sngie#include <stdlib.h> 36272343Sngie 37272343Sngie#include "../../common/exec_prot.h" 38272343Sngie 39272343Sngie/* 40272343Sngie * When the NX/XD flag is present, the protection should be enabled. 41272343Sngie */ 42272343Sngieint 43272343Sngieexec_prot_support(void) 44272343Sngie{ 45272343Sngie if (system("cpuctl identify 0 | grep -q NOX") == 0 || 46272343Sngie system("cpuctl identify 0 | grep -q XD") == 0) 47272343Sngie return PERPAGE_XP; 48272343Sngie 49272343Sngie return NO_XP; 50272343Sngie} 51