[src/trunk]: src/tests/lib/libc/sys Rather than ghecking system global state ...

[pgoyette <pgoyette%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/dcf7f3db26ce
branches:  trunk
changeset: 352304:dcf7f3db26ce
user:      pgoyette <pgoyette%NetBSD.org@localhost>
date:      Sat Mar 25 01:39:20 2017 +0000

description:
Rather than ghecking system global state to see if mprotect might be
enabled, use the newly-committed sysctl proc.curproc.paxflags variable

diffstat:

 tests/lib/libc/sys/t_mprotect.c |  19 ++++++-------------
 1 files changed, 6 insertions(+), 13 deletions(-)

diffs (46 lines):

diff -r 266fc191183a -r dcf7f3db26ce tests/lib/libc/sys/t_mprotect.c
--- a/tests/lib/libc/sys/t_mprotect.c   Fri Mar 24 21:44:13 2017 +0000
+++ b/tests/lib/libc/sys/t_mprotect.c   Sat Mar 25 01:39:20 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_mprotect.c,v 1.5 2017/03/24 08:18:27 martin Exp $ */
+/* $NetBSD: t_mprotect.c,v 1.6 2017/03/25 01:39:20 pgoyette Exp $ */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_mprotect.c,v 1.5 2017/03/24 08:18:27 martin Exp $");
+__RCSID("$NetBSD: t_mprotect.c,v 1.6 2017/03/25 01:39:20 pgoyette Exp $");
 
 #include <sys/param.h>
 #include <sys/mman.h>
@@ -62,23 +62,16 @@
 paxinit(void)
 {
        size_t len = sizeof(int);
-       int pax_global = -1;
-       int pax_enabled = -1;
+       int pax_flags;
        int rv;
 
-       rv = sysctlbyname("security.pax.mprotect.global",
-           &pax_global, &len, NULL, 0);
+       rv = sysctlbyname("proc.curproc.paxflags",
+           &pax_flags, &len, NULL, 0);
 
        if (rv != 0)
                return false;
 
-       rv = sysctlbyname("security.pax.mprotect.enabled",
-           &pax_enabled, &len, NULL, 0);
-
-       if (rv != 0)
-               return false;
-
-       return pax_global == 1 && pax_enabled == 1;
+       return ((pax_flags & CTL_PROC_PAXFLAGS_MPROTECT) != 0);
 }
 
 ATF_TC_WITH_CLEANUP(mprotect_access);