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 "$grub_dir" ]; then
113 if [ -d /usr/lib/grub/i386-pc ]; then
114 cp -a /usr/lib/grub/i386-pc/* "$grub_dir"
116 elif [ -d /usr/lib/grub/x86_64-pc ]; then
117 cp -a /usr/lib/grub/x86_64-pc/* "$grub_dir"
122 # create/update grub configuration
123 if [ -e "$menu_file" ]; then
124 # is there uncompatibile grub conf present?
125 if ! grep -q 'AUTOMAGIC KERNELS LIST' "$menu_file"; then
126 mv -f "$menu_file" "$menu_file.old"
129 if [ ! -e "$menu_file" ]; then
130 yes | /usr/sbin/update-grub >/dev/null 2>&1 || true
132 /usr/sbin/update-grub >/dev/null 2>&1 || true
137 if [ -x /sbin/chpax ]; then
138 if [ -x /usr/sbin/grub ]; then
139 chpax -spmrx /usr/sbin/grub || true
141 if [ -x /usr/sbin/grub-probe ]; then
142 chpax -spmrx /usr/sbin/grub-probe || true
147 # workaround execshield
148 SHIELD=$(sysctl -e -n kernel.exec-shield)
149 if [ ! -z "$SHIELD" ]; then
150 sysctl -e -w kernel.exec-shield=0 >/dev/null 2>&1
151 echo -n " execshield1"
154 # remove obsolete devfs/compat links and restore normal udev behaviour
155 rm -f /etc/udev/rules.d/devfs.rules /etc/udev/rules.d/compat.rules \
156 /etc/udev/rules.d/compat-full.rules
157 #if [ ! -e /etc/udev/rules.d/udev.rules ]; then
158 # ln -s ../udev.rules /etc/udev/rules.d/udev.rules
160 udevadm control --reload_rules >/dev/null 2>&1 || true
164 # update device map if possible
165 if [ -f "$device_map" ]; then
166 mv -f "$device_map" "$device_map.old"
168 grub --batch --no-floppy --device-map="$device_map" <<EOF >/dev/null 2>&1
171 if [ ! -s "$device_map" ]; then
172 if [ -f "$device_map.old" ]; then
173 mv -f "$device_map.old" "$device_map"
177 rm -f "$device_map.old"
181 # get install device (0x80 BIOS device)
182 install_device=$(grep '^(hd0)' "$device_map" | \
183 sed -e 's%[^[:space:]]*[[:space:]]*\([^[:space:]]*\)%\1%')
184 if [ -z "$install_device" ]; then
186 echo "CN: FATAL ERROR while detecting boot disk!"
187 echo "CN: Do not reboot your server and report this to OTRS immediately!"
191 # oops, install device is a symlink...
192 if [ -h "$install_device" ]; then
193 install_device_resolved=$(resolve_symlink "$install_device")
194 if [ -z "$install_device_resolved" ]; then
195 install_device_resolved="$install_device"
198 # try to fix device map with symlink resolved device
199 if [ "x$install_device_resolved" != "x$install_device" ]; then
200 cp_check_and_sed '^\(hd0\)' \
201 "s;^(hd0).*;(hd0) $install_device_resolved;" "$device_map" \
207 # install GRUB loader
208 if ! grub-install --no-floppy "$install_device" >/dev/null 2>&1; then
210 echo "CN: FATAL ERROR while running grub-install!"
211 echo "CN: Do not reboot your server and report this to OTRS immediately!"
216 # fix possible wrong params in menu.lst
217 cp_check_and_sed '^# groot=' \
218 "s;^# groot=.*;# groot=$grub_root_device;g" \
220 cp_check_and_sed '^# kopt=' \
221 "s;^# kopt=\(.*\)root=[^[:space:]]*\(.*\);# kopt=\1root=$root_device\2;g" \
223 /usr/sbin/update-grub >/dev/null 2>&1 || true
226 # and final stage of devfs/udev brokeness fix
227 if [ "x$install_device_resolved" != "x$install_device" ]; then
228 # get original (symlinked device)
229 root_device=$(find_device_nonresolved "/")
230 if [ -z "$root_device" ]; then
231 root_device=$(find_root_device)
235 cp_check_and_sed '^\(hd0\)' \
236 "s;^(hd0).*;(hd0) $install_device;" "$device_map" \
239 # fix global root= invocation
240 cp_check_and_sed '^# kopt=' \
241 "s;^# kopt=\(.*\)root=[^[:space:]]*\(.*\);# kopt=\1root=$root_device\2;g" \
244 # fix root= invocation for individual kernel profiles
245 cp_check_and_sed '^kernel' \
246 "s;\(^kernel.*\)root=[^[:space:]]*\(.*\);\1root=$root_device\2;g" \
251 # restore execshield state
252 if [ ! -z "$SHIELD" ]; then
253 sysctl -e -w "kernel.exec-shield=$SHIELD" >/dev/null 2>&1
254 echo -n " execshield2"
258 if [ -e /etc/lilo.conf ]; then
259 mv -f /etc/lilo.conf /etc/lilo.conf.old
264 if [ -x /usr/share/mdadm/mkconf ]; then
265 if [ ! -e /etc/mdadm/mdadm.conf ]; then
266 touch /etc/mdadm/mdadm.conf
269 /usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf.$$
270 if ! cmp -s /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf; then
271 mv /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf
273 rm -f /etc/mdadm/mdadm.conf.$$ /etc/initramfs-tools/hooks/md \
274 /var/lib/mdadm/CONF-UNCHECKED
278 # update initramfs accordingly (because of mdadm and udev)
279 update-initramfs -u -k all >/dev/null 2>&1 || true
285 ################################################################################
287 # rest of configuration...
288 echo -n "CN: Modifying the neccessary system files:"
291 if getent group proc >/dev/null 2>&1; then
292 groupdel proc >/dev/null 2>&1
296 # remove oidentd from oident group
297 if getent group oident >/dev/null 2>&1; then
299 cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup' \
300 's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup/OIDENT_GROUP=oident/g' \
301 /etc/default/oidentd || true
303 # old kernel-2.6-cn default
304 cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc' \
305 's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc/OIDENT_GROUP=oident/g' \
306 /etc/default/oidentd || true
311 # default kernel parameters
312 rm -f /etc/sysctl.conf.$$
313 cat > /etc/sysctl.conf.$$ <<EOF
315 kernel.maps_protect=1
316 net.core.rmem_default=1048576
317 net.core.wmem_default=1048576
318 net.ipv4.conf.all.accept_redirects=0
319 net.ipv4.conf.all.accept_source_route=0
320 net.ipv4.conf.all.log_martians=1
321 net.ipv4.conf.all.rp_filter=1
322 net.ipv4.conf.all.secure_redirects=1
323 net.ipv4.conf.all.send_redirects=0
324 net.ipv4.icmp_echo_ignore_broadcasts=1
325 net.ipv4.icmp_ignore_bogus_error_responses=1
326 net.ipv4.ip_forward=0
327 net.ipv4.ip_local_port_range=10000 65000
328 net.ipv4.tcp_congestion_control=cubic
330 net.ipv4.tcp_max_syn_backlog=8192
331 net.ipv4.tcp_retries1=2
332 net.ipv4.tcp_rfc1337=1
333 net.ipv4.tcp_syncookies=1
334 vm.mmap_min_addr=65536
338 if [ -e /etc/sysctl.conf ]; then
339 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' \
340 /etc/sysctl.conf >> /etc/sysctl.conf.$$
343 # add sysctl.conf Debian headers
344 rm -f /etc/sysctl.conf-head
345 cat > /etc/sysctl.conf-head <<EOF
347 # /etc/sysctl.conf - Configuration file for setting system variables
348 # See sysctl.conf (5) for information.
352 # merge old and new in one conf, primarily respecting old
359 if (/^\s*(\S+)\s*=\s*(.+)\s*$/o)
361 my ($key, $value) = ($1, $2);
363 $confhash{$key} = $value;
366 for (sort { $a cmp $b } keys %confhash)
368 print $_, "=", $confhash{$_}, "\n";
371 rm -f /etc/sysctl.conf-new
372 perl -e "$script" < /etc/sysctl.conf.$$ > /etc/sysctl.conf-new
373 cat /etc/sysctl.conf-head /etc/sysctl.conf-new > /etc/sysctl.conf.$$
374 rm -f /etc/sysctl.conf-head /etc/sysctl.conf-new
376 # finished with merging, move into sysctl.conf
377 cp_mv /etc/sysctl.conf.$$ /etc/sysctl.conf
378 echo -n " sysctl.conf"
380 # finished with basic kernel-2.6-cn stuff
383 ################################################################################
386 echo -n "CN: Setting up PAM configurations:"
388 # update pam_limits accordingly
389 if [ -e /etc/security/limits.conf ]; then
390 rm -f /etc/security/limits.conf.$$
391 cp /etc/security/limits.conf /etc/security/limits.conf.$$
392 cp-update kernel-2.6-cn /etc/security/limits.conf.$$ <<EOF
397 cp_mv /etc/security/limits.conf.$$ /etc/security/limits.conf
402 if [ -e /etc/pam.d/login ]; then
403 cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
404 's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
405 /etc/pam.d/login || true
410 if [ -e /etc/pam.d/ssh ]; then
411 cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
412 's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
413 /etc/pam.d/ssh || true
420 ################################################################################
422 # fix old kernel-2.4-cn postrm
423 if [ -e /var/lib/dpkg/info/kernel-2.4-cn.postrm ]; then
424 echo "CN: Fixed old kernel-2.4-cn postrm."
425 cat > /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ <<EOF
431 if [ "$1" != "remove" ]; then
435 # import CN-functions
436 . /usr/share/carnet-tools/functions.sh
438 # remove us from limits.conf
439 cp-update -r kernel-2.4-cn /etc/security/limits.conf
441 # remove us from modules
442 cp-update -r kernel-2.4-cn /etc/modules
444 if ! cmp -s /var/lib/dpkg/info/kernel-2.4-cn.postrm \
445 /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$; then
446 mv /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ \
447 /var/lib/dpkg/info/kernel-2.4-cn.postrm
448 chmod +x /var/lib/dpkg/info/kernel-2.4-cn.postrm
450 rm -f /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$
453 ################################################################################
455 # fix old kernel-cn postrm
456 if [ -e /var/lib/dpkg/info/kernel-cn.postrm ]; then
457 echo "CN: Fixed old kernel-cn postrm."
458 cat > /var/lib/dpkg/info/kernel-cn.postrm.$$ <<EOF
464 if [ "$1" != "remove" ]; then
468 # import CN-functions
469 . /usr/share/carnet-tools/functions.sh
471 # remove us from limits.conf
472 cp-update -r kernel-cn /etc/security/limits.conf
474 # remove us from modules
475 cp-update -r kernel-cn /etc/modules
477 if ! cmp -s /var/lib/dpkg/info/kernel-cn.postrm \
478 /var/lib/dpkg/info/kernel-cn.postrm.$$; then
479 mv /var/lib/dpkg/info/kernel-cn.postrm.$$ \
480 /var/lib/dpkg/info/kernel-cn.postrm
481 chmod +x /var/lib/dpkg/info/kernel-cn.postrm
483 rm -f /var/lib/dpkg/info/kernel-cn.postrm.$$
486 ################################################################################
488 # dh_installdeb will replace this with shell code automatically
489 # generated by other debhelper scripts.