2 # preinst script for kernel-cn
4 # see: dh_installdeb(1)
8 # summary of how this script can be called:
9 # * <new-preinst> `install'
10 # * <new-preinst> `install' <old-version>
11 # * <new-preinst> `upgrade' <old-version>
12 # * <old-preinst> `abort-upgrade' <new-version>
13 # for details, see http://www.debian.org/doc/debian-policy/ or
14 # the debian-policy package
22 # check if we have Layer7 active...
23 if iptables-save | grep -qs '^-A.* -m layer7 '; then
24 echo 'CN: Layer7 Netfilter no longer supported, report this to SysHelp!'
30 echo "preinst called with unknown argument \`$1'" >&2
35 # check if the config script fixed the grub diverts
36 if [ -e /usr/sbin/grub.real -o -e /usr/sbin/grub-probe.real ]; then
37 echo "CN: Please install Grub2 package using: apt-get install grub-pc"
41 # make GRUB template directory
42 if [ ! -d /boot/grub ]; then
43 echo "CN: Made /boot/grub directory."
47 ################################################################################
49 SHIELD=$(sysctl -e -n kernel.exec-shield)
51 if [ ! -z "$SHIELD" ]; then
52 sysctl -e -w kernel.exec-shield=0 >/dev/null 2>&1 || true
53 echo "CN: Disabled Exec-Shield."
56 ################################################################################
58 # dh_installdeb will replace this with shell code automatically
59 # generated by other debhelper scripts.