1*a030baf5Smatt /* $NetBSD: exec_prot_support.c,v 1.2 2012/03/16 08:51:47 matt Exp $ */
2ca453df6Sjym
3ca453df6Sjym /*-
4*a030baf5Smatt * Copyright (c) 2012 The NetBSD Foundation, Inc.
5ca453df6Sjym * All rights reserved.
6ca453df6Sjym *
7ca453df6Sjym * This code is derived from software contributed to The NetBSD Foundation
8*a030baf5Smatt * by Matt Thomas of 3am Software Foundry.
9ca453df6Sjym *
10ca453df6Sjym * Redistribution and use in source and binary forms, with or without
11ca453df6Sjym * modification, are permitted provided that the following conditions
12ca453df6Sjym * are met:
13ca453df6Sjym * 1. Redistributions of source code must retain the above copyright
14ca453df6Sjym * notice, this list of conditions and the following disclaimer.
15ca453df6Sjym * 2. Redistributions in binary form must reproduce the above copyright
16ca453df6Sjym * notice, this list of conditions and the following disclaimer in the
17ca453df6Sjym * documentation and/or other materials provided with the distribution.
18ca453df6Sjym *
19ca453df6Sjym * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20ca453df6Sjym * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21ca453df6Sjym * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22ca453df6Sjym * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23ca453df6Sjym * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24ca453df6Sjym * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25ca453df6Sjym * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26ca453df6Sjym * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27ca453df6Sjym * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28ca453df6Sjym * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29ca453df6Sjym * POSSIBILITY OF SUCH DAMAGE.
30ca453df6Sjym */
31ca453df6Sjym
32ca453df6Sjym #include <sys/cdefs.h>
33*a030baf5Smatt __RCSID("$NetBSD: exec_prot_support.c,v 1.2 2012/03/16 08:51:47 matt Exp $");
34ca453df6Sjym
35ca453df6Sjym #include "../../common/exec_prot.h"
36ca453df6Sjym
37*a030baf5Smatt #include <sys/sysctl.h>
38*a030baf5Smatt
39ca453df6Sjym int
exec_prot_support(void)40ca453df6Sjym exec_prot_support(void)
41ca453df6Sjym {
42*a030baf5Smatt int execprot = 0;
43*a030baf5Smatt size_t len = sizeof(execprot);
44*a030baf5Smatt
45*a030baf5Smatt if (sysctlbyname("machdep.execprot", &execprot, &len, NULL, 0) < 0)
46ca453df6Sjym return NOTIMPL;
47*a030baf5Smatt
48*a030baf5Smatt if (execprot)
49*a030baf5Smatt return PERPAGE_XP;
50*a030baf5Smatt
51*a030baf5Smatt return NO_XP;
52ca453df6Sjym }
53