#!/bin/sh
# $Revision: 270 $
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# (c) Tim Brown, 2012
# <mailto:timb@nth-dimension.org.uk>
# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
#
# Check if the system supports ASLR (Address Space Layout Randomization)

. lib/misc/kernel
. lib/misc/stdio

system_aslr_init () {
	stdio_message_log "system_aslr" "Starting at: `date`"
}

system_aslr_main () {
	if [ "`kernel_aslr`" -eq 0 ]
	then
		if [ "`kernel_aslr_pax`" -eq 0 ]
		then
			stdio_message_warn "system_aslr" "ASLR is not supported system-wide"
		else
			stdio_message_debug "system_aslr" "PAX ASLR is supported system-wide"
		fi
	elif [ "`kernel_aslr`" -eq 1 ]
	then
		stdio_message_log "system_aslr" "Conservative ASLR is supported system-wide (heap addresses are not randomized)"
	else
		stdio_message_debug "system_aslr" "ASLR is supported system-wide"
	fi
}

system_aslr_fini () {
	stdio_message_log "system_aslr" "Ending at: `date`"
}
