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
149 # install grub loader
150 if ! grub-install --no-floppy '(hd0)' >/dev/null 2>&1; then
152 echo "CN: FATAL ERROR running grub-install!"
153 echo "CN: Do not reboot your server and report this to OTRS immediately!"
158 # fix possible wrong params in menu.lst
159 cp_check_and_sed '^# groot=' \
160 "s;^# groot=.*;# groot=$grub_root_device;g" \
161 /boot/grub/menu.lst || true
162 cp_check_and_sed '^# kopt=' \
163 "s;^# kopt=\(.*\)root=[^[:space:]]*\(.*\);# kopt=\1root=$root_device\2;g" \
164 /boot/grub/menu.lst || true
165 /usr/sbin/update-grub >/dev/null 2>&1 || true
168 # restore execshield state
169 if [ ! -z "$SHIELD" ]; then
170 sysctl -w -e "kernel.exec-shield=$SHIELD" >/dev/null 2>&1
174 if [ -e /etc/lilo.conf ]; then
175 mv -f /etc/lilo.conf /etc/lilo.conf.old
180 if [ -x /usr/share/mdadm/mkconf ]; then
181 if [ ! -e /etc/mdadm/mdadm.conf ]; then
182 touch /etc/mdadm/mdadm.conf
185 /usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf.$$
186 if ! cmp -s /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf; then
187 mv /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf
189 rm -f /etc/mdadm/mdadm.conf.$$ /etc/initramfs-tools/hooks/md \
190 /var/lib/mdadm/CONF-UNCHECKED
194 # update initramfs accordingly
195 update-initramfs -u -k all >/dev/null 2>&1 || true
201 ################################################################################
203 # rest of configuration...
204 echo -n "CN: Modifying the neccessary system files:"
207 if getent group proc >/dev/null 2>&1; then
208 groupdel proc >/dev/null 2>&1
212 # remove oidentd from oident group
213 if getent group oident >/dev/null 2>&1; then
215 cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup' \
216 's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup/OIDENT_GROUP=oident/g' \
217 /etc/default/oidentd || true
219 # old kernel-2.6-cn default
220 cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc' \
221 's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc/OIDENT_GROUP=oident/g' \
222 /etc/default/oidentd || true
227 # default kernel parameters
228 rm -f /etc/sysctl.conf.$$
229 cat > /etc/sysctl.conf.$$ <<EOF
231 kernel.maps_protect=1
232 net.core.rmem_default=1048576
233 net.core.wmem_default=1048576
234 net.ipv4.conf.all.accept_redirects=0
235 net.ipv4.conf.all.accept_source_route=0
236 net.ipv4.conf.all.log_martians=1
237 net.ipv4.conf.all.rp_filter=1
238 net.ipv4.conf.all.secure_redirects=1
239 net.ipv4.conf.all.send_redirects=0
240 net.ipv4.icmp_echo_ignore_broadcasts=1
241 net.ipv4.icmp_ignore_bogus_error_responses=1
242 net.ipv4.ip_forward=0
243 net.ipv4.ip_local_port_range=10000 65000
244 net.ipv4.tcp_congestion_control=cubic
246 net.ipv4.tcp_max_syn_backlog=8192
247 net.ipv4.tcp_retries1=2
248 net.ipv4.tcp_rfc1337=1
249 net.ipv4.tcp_syncookies=1
250 vm.mmap_min_addr=65536
254 if [ -e /etc/sysctl.conf ]; then
255 #cat /etc/sysctl.conf >> /etc/sysctl.conf.$$
256 #ignore some of 2.4 stuff
257 egrep -v 'net\.core\.(r|w)mem_max|net\.ipv4\.tcp_(r|w)mem|vm\.bdflush|net\.ipv4\.ip_local_port_range|kernel\.rtsig-max|net\.ipv4\.tcp_syncookies' \
258 /etc/sysctl.conf >> /etc/sysctl.conf.$$
261 # add sysctl.conf Debian headers
262 rm -f /etc/sysctl.conf-head
263 cat > /etc/sysctl.conf-head <<EOF
265 # /etc/sysctl.conf - Configuration file for setting system variables
266 # See sysctl.conf (5) for information.
270 # merge old and new in one conf, primarily respecting old
277 if (/^\s*(\S+)\s*=\s*(.+)\s*$/o)
279 my ($key, $value) = ($1, $2);
281 $confhash{$key} = $value;
284 for (sort { $a cmp $b } keys %confhash)
286 print $_, "=", $confhash{$_}, "\n";
289 rm -f /etc/sysctl.conf-new
290 perl -e "$script" < /etc/sysctl.conf.$$ > /etc/sysctl.conf-new
291 cat /etc/sysctl.conf-head /etc/sysctl.conf-new > /etc/sysctl.conf.$$
292 rm -f /etc/sysctl.conf-head /etc/sysctl.conf-new
294 # finished with merging, move into sysctl.conf
295 cp_mv /etc/sysctl.conf.$$ /etc/sysctl.conf
296 echo -n " sysctl.conf"
298 # finished with basic kernel-2.6-cn stuff
301 ################################################################################
304 echo -n "CN: Setting up PAM configurations:"
306 # update pam_limits accordingly
307 if [ -e /etc/security/limits.conf ]; then
308 rm -f /etc/security/limits.conf.$$
309 cp /etc/security/limits.conf /etc/security/limits.conf.$$
310 cp-update kernel-2.6-cn /etc/security/limits.conf.$$ <<EOF
315 cp_mv /etc/security/limits.conf.$$ /etc/security/limits.conf
320 if [ -e /etc/pam.d/login ]; then
321 cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
322 's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
323 /etc/pam.d/login || true
328 if [ -e /etc/pam.d/ssh ]; then
329 cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
330 's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
331 /etc/pam.d/ssh || true
338 ################################################################################
340 # fix old kernel-2.4-cn postrm
341 if [ -e /var/lib/dpkg/info/kernel-2.4-cn.postrm ]; then
342 echo "CN: Fixed old kernel-2.4-cn postrm."
343 cat > /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ <<EOF
349 if [ "$1" != "remove" ]; then
353 # import CN-functions
354 . /usr/share/carnet-tools/functions.sh
356 # remove us from limits.conf
357 cp-update -r kernel-2.4-cn /etc/security/limits.conf
359 # remove us from modules
360 cp-update -r kernel-2.4-cn /etc/modules
362 if ! cmp -s /var/lib/dpkg/info/kernel-2.4-cn.postrm \
363 /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$; then
364 mv /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ \
365 /var/lib/dpkg/info/kernel-2.4-cn.postrm
366 chmod +x /var/lib/dpkg/info/kernel-2.4-cn.postrm
368 rm -f /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$
371 ################################################################################
373 # fix old kernel-cn postrm
374 if [ -e /var/lib/dpkg/info/kernel-cn.postrm ]; then
375 echo "CN: Fixed old kernel-cn postrm."
376 cat > /var/lib/dpkg/info/kernel-cn.postrm.$$ <<EOF
382 if [ "$1" != "remove" ]; then
386 # import CN-functions
387 . /usr/share/carnet-tools/functions.sh
389 # remove us from limits.conf
390 cp-update -r kernel-cn /etc/security/limits.conf
392 # remove us from modules
393 cp-update -r kernel-cn /etc/modules
395 if ! cmp -s /var/lib/dpkg/info/kernel-cn.postrm \
396 /var/lib/dpkg/info/kernel-cn.postrm.$$; then
397 mv /var/lib/dpkg/info/kernel-cn.postrm.$$ \
398 /var/lib/dpkg/info/kernel-cn.postrm
399 chmod +x /var/lib/dpkg/info/kernel-cn.postrm
401 rm -f /var/lib/dpkg/info/kernel-cn.postrm.$$
404 ################################################################################
406 # dh_installdeb will replace this with shell code automatically
407 # generated by other debhelper scripts.