xref: /illumos-gate/usr/src/test/os-tests/tests/secflags/secflags_aslr.sh (revision 132157d7fb25c120ae1deca2a65fa7c78e8fcfd0) 
1#! /usr/bin/ksh
2#
3#
4# This file and its contents are supplied under the terms of the
5# Common Development and Distribution License ("CDDL"), version 1.0.
6# You may only use this file in accordance with the terms of version
7# 1.0 of the CDDL.
8#
9# A full copy of the text of the CDDL should have accompanied this
10# source.  A copy of the CDDL is also available via the Internet at
11# http://www.illumos.org/license/CDDL.
12#
13
14# Copyright 2015, Richard Lowe.
15
16# Verify that aslr messes things up, by comparing the mappings of 2 identical
17# processes
18
19LC_ALL=C                        # Collation is important
20
21/usr/bin/psecflags -s aslr $$
22
23tmpdir=/tmp/test.$$
24
25mkdir $tmpdir
26cd $tmpdir
27
28cleanup() {
29    cd /
30    rm -fr $tmpdir
31}
32
33trap 'cleanup' EXIT
34
35check() {
36    typeset name=$1
37    typeset command=$2
38
39    for (( i=0; i < 1000; i++ )); do
40        $command > out.$i
41    done
42
43    cat out.* | sort | uniq -c | sort -nk 1 | nawk '
44	BEGIN {
45		tot = 0
46		colls = 0
47	}
48
49	$2 != "text:" {
50		tot += $1
51		if ($1 > 1) {
52			colls += $1
53		}
54	}
55
56	END {
57		prc = (colls / tot) * 100
58		printf "'$name' Collisions: %d/%d (%g%%)\n", colls, tot, prc
59		exit prc
60	}
61'
62    return $?
63}
64
65# Somewhat arbitrary
66ACCEPTABLE=70
67
68ret=0
69check 32bit /opt/os-tests/tests/secflags/addrs-32
70(( $? > $ACCEPTABLE )) && ret=1
71check 64bit /opt/os-tests/tests/secflags/addrs-64
72(( $? > $ACCEPTABLE )) && ret=1
73
74exit $ret
75