2 # postinst script for kernel-2.6-cn
4 # see: dh_installdeb(1)
8 # summary of how this script can be called:
9 # * <postinst> `configure' <most-recently-configured-version>
10 # * <old-postinst> `abort-upgrade' <new version>
11 # * <conflictor's-postinst> `abort-remove' `in-favour' <package>
13 # * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
14 # <failed-install-package> <version> `removing'
15 # <conflicting-package> <version>
16 # for details, see http://www.debian.org/doc/debian-policy/ or
17 # the debian-policy package
21 configure|reconfigure)
31 . /usr/share/carnet-tools/functions.sh
33 # import GRUB helper functions
34 . /usr/share/kernel-2.6-cn/grub-functions.sh
36 ################################################################################
39 echo -n "CN: Backed up to /var/backups:"
42 if [ -e /etc/lilo.conf ]; then
43 cp_backup_conffile /etc/lilo.conf
47 # backup old kernel params
48 if [ -e /etc/sysctl.conf ]; then
49 cp_backup_conffile /etc/sysctl.conf
50 echo -n " sysctl.conf"
53 # backup old kernel params
54 if [ -e /etc/kernel-img.conf ]; then
55 cp_backup_conffile /etc/kernel-img.conf
56 echo -n " kernel-img.conf"
62 ################################################################################
64 # remove obsolete symlinks and kernels
65 rm -f /boot/vmlinuz /boot/vmlinuz.old /boot/vmlinuz.old2 \
66 /boot/vmlinuz.plain /vmlinuz /vmlinuz.old /boot/vmlinuz.plain \
67 /boot/vmlinuz.generic /boot/vmlinuz-generic /boot/vmlinuz-old
68 echo "CN: Removed old symlinks in / and /boot."
70 ################################################################################
73 echo -n "CN: Configuring system (this will take a while):"
75 # generate kernel-img.conf
76 if [ ! -e /etc/kernel-img.conf ]; then
77 touch /etc/kernel-img.conf
80 # update postinst_hook for grub
81 if grep -q postinst_hook /etc/kernel-img.conf; then
82 cp_check_and_sed '^postinst_hook' \
83 's;^postinst_hook[[:blank:]]*=.*;postinst_hook = /usr/sbin/update-grub;g' \
84 /etc/kernel-img.conf || true
86 echo "postinst_hook = /usr/sbin/update-grub" >> /etc/kernel-img.conf
89 # update postrm_hook for grub
90 if grep -q postrm_hook /etc/kernel-img.conf; then
91 cp_check_and_sed '^postrm_hook' \
92 's;^postrm_hook[[:blank:]]*=.*;postrm_hook = /usr/sbin/update-grub;g' \
93 /etc/kernel-img.conf || true
95 echo "postrm_hook = /usr/sbin/update-grub" >> /etc/kernel-img.conf
99 if grep -q do_initrd /etc/kernel-img.conf; then
100 cp_check_and_sed '^do_initrd' \
101 's/^do_initrd[[:blank:]]*=.*/do_initrd = yes/g' \
102 /etc/kernel-img.conf || true
104 echo "do_initrd = yes" >> /etc/kernel-img.conf
107 echo -n " kernel-img.conf"
109 # generate initial grub loaders
110 if [ ! -d /boot/grub ]; then
112 if [ -d /usr/lib/grub/i386-pc ]; then
113 cp -a /usr/lib/grub/i386-pc/* /boot/grub
118 # create/update grub configuration
119 if [ -e /boot/grub/menu.lst ]; then
120 # is there uncompatibile grub conf present?
121 if ! grep -q 'AUTOMAGIC KERNELS LIST' /boot/grub/menu.lst; then
122 mv -f /boot/grub/menu.lst /boot/grub/menu.lst.old
125 if [ ! -e /boot/grub/menu.lst ]; then
126 yes | /usr/sbin/update-grub >/dev/null 2>&1 || true
128 /usr/sbin/update-grub >/dev/null 2>&1 || true
133 if [ -x /sbin/chpax ]; then
134 if [ -x /usr/sbin/grub ]; then
135 chpax -spmrx /usr/sbin/grub || true
137 if [ -x /usr/sbin/grub-probe ]; then
138 chpax -spmrx /usr/sbin/grub-probe || true
143 # workaround execshield
144 SHIELD=$(sysctl -e -n kernel.exec-shield)
145 if [ ! -z "$SHIELD" ]; then
146 sysctl -w -e kernel.exec-shield=0 >/dev/null 2>&1
147 echo -n " execshield1"
150 # remove obsolete devfs compat links
151 rm -f /etc/udev/rules.d/devfs.rules /etc/udev/rules.d/compat.rules \
152 /etc/udev/rules.d/compat-full.rules
153 udevcontrol reload_rules >/dev/null 2>&1 || true
156 # install grub loader
157 if ! grub-install --no-floppy '(hd0)' >/dev/null 2>&1; then
159 echo "CN: FATAL ERROR running grub-install!"
160 echo "CN: Do not reboot your server and report this to OTRS immediately!"
165 # fix possible wrong params in menu.lst
166 cp_check_and_sed '^# groot=' \
167 "s;^# groot=.*;# groot=$grub_root_device;g" \
168 /boot/grub/menu.lst || true
169 cp_check_and_sed '^# kopt=' \
170 "s;^# kopt=\(.*\)root=[^[:space:]]*\(.*\);# kopt=\1root=$root_device\2;g" \
171 /boot/grub/menu.lst || true
172 /usr/sbin/update-grub >/dev/null 2>&1 || true
175 # restore execshield state
176 if [ ! -z "$SHIELD" ]; then
177 sysctl -w -e "kernel.exec-shield=$SHIELD" >/dev/null 2>&1
178 echo -n " execshield2"
182 if [ -e /etc/lilo.conf ]; then
183 mv -f /etc/lilo.conf /etc/lilo.conf.old
188 if [ -x /usr/share/mdadm/mkconf ]; then
189 if [ ! -e /etc/mdadm/mdadm.conf ]; then
190 touch /etc/mdadm/mdadm.conf
193 /usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf.$$
194 if ! cmp -s /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf; then
195 mv /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf
197 rm -f /etc/mdadm/mdadm.conf.$$ /etc/initramfs-tools/hooks/md \
198 /var/lib/mdadm/CONF-UNCHECKED
202 # update initramfs accordingly
203 update-initramfs -u -k all >/dev/null 2>&1 || true
209 ################################################################################
211 # rest of configuration...
212 echo -n "CN: Modifying the neccessary system files:"
215 if getent group proc >/dev/null 2>&1; then
216 groupdel proc >/dev/null 2>&1
220 # remove oidentd from oident group
221 if getent group oident >/dev/null 2>&1; then
223 cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup' \
224 's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup/OIDENT_GROUP=oident/g' \
225 /etc/default/oidentd || true
227 # old kernel-2.6-cn default
228 cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc' \
229 's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc/OIDENT_GROUP=oident/g' \
230 /etc/default/oidentd || true
235 # default kernel parameters
236 rm -f /etc/sysctl.conf.$$
237 cat > /etc/sysctl.conf.$$ <<EOF
239 kernel.maps_protect=1
240 net.core.rmem_default=1048576
241 net.core.wmem_default=1048576
242 net.ipv4.conf.all.accept_redirects=0
243 net.ipv4.conf.all.accept_source_route=0
244 net.ipv4.conf.all.log_martians=1
245 net.ipv4.conf.all.rp_filter=1
246 net.ipv4.conf.all.secure_redirects=1
247 net.ipv4.conf.all.send_redirects=0
248 net.ipv4.icmp_echo_ignore_broadcasts=1
249 net.ipv4.icmp_ignore_bogus_error_responses=1
250 net.ipv4.ip_forward=0
251 net.ipv4.ip_local_port_range=10000 65000
252 net.ipv4.tcp_congestion_control=cubic
254 net.ipv4.tcp_max_syn_backlog=8192
255 net.ipv4.tcp_retries1=2
256 net.ipv4.tcp_rfc1337=1
257 net.ipv4.tcp_syncookies=1
258 vm.mmap_min_addr=65536
262 if [ -e /etc/sysctl.conf ]; then
263 egrep -v 'net\.core\.(r|w)mem_max|net\.ipv4\.tcp_(r|w)mem|vm\.bdflush|net\.ipv4\.ip_local_port_range|kernel\.rtsig-max|net\.ipv4\.tcp_syncookies' \
264 /etc/sysctl.conf >> /etc/sysctl.conf.$$
267 # add sysctl.conf Debian headers
268 rm -f /etc/sysctl.conf-head
269 cat > /etc/sysctl.conf-head <<EOF
271 # /etc/sysctl.conf - Configuration file for setting system variables
272 # See sysctl.conf (5) for information.
276 # merge old and new in one conf, primarily respecting old
283 if (/^\s*(\S+)\s*=\s*(.+)\s*$/o)
285 my ($key, $value) = ($1, $2);
287 $confhash{$key} = $value;
290 for (sort { $a cmp $b } keys %confhash)
292 print $_, "=", $confhash{$_}, "\n";
295 rm -f /etc/sysctl.conf-new
296 perl -e "$script" < /etc/sysctl.conf.$$ > /etc/sysctl.conf-new
297 cat /etc/sysctl.conf-head /etc/sysctl.conf-new > /etc/sysctl.conf.$$
298 rm -f /etc/sysctl.conf-head /etc/sysctl.conf-new
300 # finished with merging, move into sysctl.conf
301 cp_mv /etc/sysctl.conf.$$ /etc/sysctl.conf
302 echo -n " sysctl.conf"
304 # finished with basic kernel-2.6-cn stuff
307 ################################################################################
310 echo -n "CN: Setting up PAM configurations:"
312 # update pam_limits accordingly
313 if [ -e /etc/security/limits.conf ]; then
314 rm -f /etc/security/limits.conf.$$
315 cp /etc/security/limits.conf /etc/security/limits.conf.$$
316 cp-update kernel-2.6-cn /etc/security/limits.conf.$$ <<EOF
321 cp_mv /etc/security/limits.conf.$$ /etc/security/limits.conf
326 if [ -e /etc/pam.d/login ]; then
327 cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
328 's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
329 /etc/pam.d/login || true
334 if [ -e /etc/pam.d/ssh ]; then
335 cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
336 's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
337 /etc/pam.d/ssh || true
344 ################################################################################
346 # fix old kernel-2.4-cn postrm
347 if [ -e /var/lib/dpkg/info/kernel-2.4-cn.postrm ]; then
348 echo "CN: Fixed old kernel-2.4-cn postrm."
349 cat > /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ <<EOF
355 if [ "$1" != "remove" ]; then
359 # import CN-functions
360 . /usr/share/carnet-tools/functions.sh
362 # remove us from limits.conf
363 cp-update -r kernel-2.4-cn /etc/security/limits.conf
365 # remove us from modules
366 cp-update -r kernel-2.4-cn /etc/modules
368 if ! cmp -s /var/lib/dpkg/info/kernel-2.4-cn.postrm \
369 /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$; then
370 mv /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ \
371 /var/lib/dpkg/info/kernel-2.4-cn.postrm
372 chmod +x /var/lib/dpkg/info/kernel-2.4-cn.postrm
374 rm -f /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$
377 ################################################################################
379 # fix old kernel-cn postrm
380 if [ -e /var/lib/dpkg/info/kernel-cn.postrm ]; then
381 echo "CN: Fixed old kernel-cn postrm."
382 cat > /var/lib/dpkg/info/kernel-cn.postrm.$$ <<EOF
388 if [ "$1" != "remove" ]; then
392 # import CN-functions
393 . /usr/share/carnet-tools/functions.sh
395 # remove us from limits.conf
396 cp-update -r kernel-cn /etc/security/limits.conf
398 # remove us from modules
399 cp-update -r kernel-cn /etc/modules
401 if ! cmp -s /var/lib/dpkg/info/kernel-cn.postrm \
402 /var/lib/dpkg/info/kernel-cn.postrm.$$; then
403 mv /var/lib/dpkg/info/kernel-cn.postrm.$$ \
404 /var/lib/dpkg/info/kernel-cn.postrm
405 chmod +x /var/lib/dpkg/info/kernel-cn.postrm
407 rm -f /var/lib/dpkg/info/kernel-cn.postrm.$$
410 ################################################################################
412 # dh_installdeb will replace this with shell code automatically
413 # generated by other debhelper scripts.