2 # preinst script for kernel-2.6-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 \`$1'" >&2
35 # make GRUB template directory
36 if [ ! -d /boot/grub ]; then
37 echo "CN: Made /boot/grub directory."
41 ################################################################################
43 SHIELD=$(sysctl -e -n kernel.exec-shield)
45 if [ ! -z "$SHIELD" ]; then
46 sysctl -e -w kernel.exec-shield=0 >/dev/null 2>&1 || true
47 echo "CN: Disabled Exec-Shield."
50 ################################################################################
52 DIVERT_TO="grub grub-probe"
54 echo -n "CN: Undiverting binaries:"
55 for i in $DIVERT_TO; do
56 if [ -e /usr/sbin/$i.real ]; then
57 dpkg-divert --remove --rename --package 'kernel-2.6-cn' \
58 --divert /usr/sbin/$i.real /usr/sbin/$i >/dev/null
64 # dh_installdeb will replace this with shell code automatically
65 # generated by other debhelper scripts.