63cf3b23ec478a5380b76109b919d401cf349677
[kernel-cn.git] / debian / postinst
1 #!/bin/sh
2 # postinst script for kernel-2.6-cn
3 #
4 # see: dh_installdeb(1)
5
6 set -e
7
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>
12 #          <new-version>
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
18 #
19
20 case "$1" in
21     configure|reconfigure)
22       # continue below
23     ;;
24
25     *)
26         exit 0
27     ;;
28 esac
29
30 # Source debconf library.
31 . /usr/share/debconf/confmodule
32
33 # import CN-functions
34 . /usr/share/carnet-tools/functions.sh
35
36 # import GRUB helper functions
37 . /usr/share/kernel-2.6-cn/grub-functions.sh
38
39 ################################################################################
40
41 # starting up backup
42 echo -n "CN: Backed up to /var/backups:"
43
44 # backup lilo.conf
45 if [ -e /etc/lilo.conf ]; then
46     cp_backup_conffile /etc/lilo.conf
47     echo -n " lilo.conf"
48 fi
49
50 # backup old kernel params
51 if [ -e /etc/sysctl.conf ]; then
52     cp_backup_conffile /etc/sysctl.conf
53     echo -n " sysctl.conf"
54 fi
55
56 # backup old kernel params
57 if [ -e /etc/kernel-img.conf ]; then
58     cp_backup_conffile /etc/kernel-img.conf
59     echo -n " kernel-img.conf"
60 fi
61
62 # finished
63 echo "."
64
65 ################################################################################
66
67 # remove obsolete symlinks and kernels
68 rm -f /boot/vmlinuz /boot/vmlinuz.old /boot/vmlinuz.old2 \
69     /boot/vmlinuz.plain /vmlinuz /vmlinuz.old /boot/vmlinuz.plain \
70     /boot/vmlinuz.generic /boot/vmlinuz-generic /boot/vmlinuz-old
71 echo "CN: Removed old symlinks in / and /boot."
72
73 ################################################################################
74
75 DIVERT_TO="grub grub-probe"
76
77 echo -n "CN: Undiverting binaries if necessary:"
78 for i in $DIVERT_TO; do
79     if [ -e /usr/sbin/$i.real ]; then
80             dpkg-divert --remove --rename --package 'kernel-2.6-cn' \
81                 --divert /usr/sbin/$i.real /usr/sbin/$i >/dev/null
82         echo -n " $i"
83     fi
84 done
85 echo "."
86
87 ################################################################################
88
89 # detect existing Grub2 installation
90
91 GRUB2="no"
92 if [ -e /boot/grub/grub.cfg ]; then
93     echo "CN: Detected GRUB2 installation, will try to use it."
94     GRUB2="yes"
95     if [ -e /boot/grub/menu.lst ]; then
96         echo "CN: Oops, GRUB1 (Legacy) installation detected. Will try to upgrade to GRUB2."
97     fi
98 else
99     echo "CN: No GRUB2 detected, will continue with GRUB1 as default option."
100 fi
101
102 ################################################################################
103
104 # intro msg
105 echo -n "CN: Configuring system (this will take a while):"
106
107 # generate kernel-img.conf
108 if [ ! -e /etc/kernel-img.conf ]; then
109     touch /etc/kernel-img.conf
110 fi
111
112 # update postinst_hook for grub/grub2
113 if grep -q postinst_hook /etc/kernel-img.conf; then
114     cp_check_and_sed '^postinst_hook' \
115         's;^postinst_hook[[:blank:]]*=.*;postinst_hook = /usr/sbin/update-grub;g' \
116         /etc/kernel-img.conf || true
117 else
118     echo "postinst_hook = /usr/sbin/update-grub" >> /etc/kernel-img.conf
119 fi
120
121 # update postrm_hook for grub/grub2
122 if grep -q postrm_hook /etc/kernel-img.conf; then
123     cp_check_and_sed '^postrm_hook' \
124         's;^postrm_hook[[:blank:]]*=.*;postrm_hook = /usr/sbin/update-grub;g' \
125         /etc/kernel-img.conf || true
126 else
127     echo "postrm_hook = /usr/sbin/update-grub" >> /etc/kernel-img.conf
128 fi
129
130 # enable initrd
131 if grep -q do_initrd /etc/kernel-img.conf; then
132     cp_check_and_sed '^do_initrd' \
133         's/^do_initrd[[:blank:]]*=.*/do_initrd = yes/g' \
134         /etc/kernel-img.conf || true
135 else
136     echo "do_initrd = yes" >> /etc/kernel-img.conf
137 fi
138
139 echo -n " kernel-img.conf"
140
141 # generate initial grub loaders
142 if [ "x$GRUB2" = "xno" ]; then
143     # Grub1 part
144     if [ ! -d "$grub_dir" ]; then
145         mkdir -p "$grub_dir"
146         # x86
147         if [ -d /usr/lib/grub/i386-pc ]; then
148             cp -a /usr/lib/grub/i386-pc/* "$grub_dir"
149         # x86_64
150         elif [ -d /usr/lib/grub/x86_64-pc ]; then
151             cp -a /usr/lib/grub/x86_64-pc/* "$grub_dir"
152         fi
153     fi
154 else
155     # Grub2 part
156     if [ ! -d /boot/grub ]; then
157         mkdir -p /boot/grub
158         if [ -d /usr/lib/grub/i386-pc ]; then
159             cp -a /usr/lib/grub/i386-pc/* /boot/grub
160         fi
161     fi
162 fi
163 echo -n " grub1"
164
165 # create/update grub configuration
166 if [ "x$GRUB2" = "xno" ]; then
167     # Grub1 part
168     if [ -e "$menu_file" ]; then
169         # is there uncompatibile grub conf present?
170         if ! grep -q 'AUTOMAGIC KERNELS LIST' "$menu_file"; then
171             mv -f "$menu_file" "$menu_file.old"
172         fi
173     fi
174     if [ ! -e "$menu_file" ]; then
175         yes | update-grub >/dev/null 2>&1 || true
176     else
177         update-grub >/dev/null 2>&1 || true
178     fi
179 else
180     # Grub2 part
181     update-grub >/dev/null 2>&1 || true
182 fi
183 echo -n " grub2"
184
185 # workaround grsec
186 if uname -a | grep -q grsec; then
187     if [ -x /sbin/chpax ]; then
188         # grub
189         if [ -x /usr/sbin/grub.real ]; then
190             chpax -spmrx /usr/sbin/grub.real >/dev/null 2>&1 || true
191         elif [ -x /usr/sbin/grub ]; then
192             chpax -spmrx /usr/sbin/grub >/dev/null 2>&1 || true
193         fi
194
195         # grub-probe
196         if [ -x /usr/sbin/grub-probe.real ]; then
197             chpax -spmrx /usr/sbin/grub-probe.real >/dev/null 2>&1 || true
198         elif [ -x /usr/sbin/grub-probe ]; then
199             chpax -spmrx /usr/sbin/grub-probe >/dev/null 2>&1 || true
200         fi
201
202         echo -n " grsec"
203     fi
204 fi
205
206 # remove obsolete devfs/compat links and restore normal udev behaviour
207 rm -f /etc/udev/rules.d/devfs.rules /etc/udev/rules.d/compat.rules \
208     /etc/udev/rules.d/compat-full.rules
209 #if [ ! -e /etc/udev/rules.d/udev.rules ]; then
210 #    ln -s ../udev.rules /etc/udev/rules.d/udev.rules
211 #fi
212 udevadm control --reload_rules >/dev/null 2>&1 || true
213 udevadm settle || true
214 echo -n " udev"
215
216 # update device map if possible
217 if [ "x$GRUB2" = "xno" ]; then
218     # Grub1 part
219     if [ -f "$device_map" ]; then
220         mv -f "$device_map" "$device_map.old"
221     fi
222     grub --batch --no-floppy --device-map="$device_map" <<'EOF' >/dev/null 2>&1
223 quit
224 EOF
225     if [ ! -s "$device_map" ]; then
226         if [ -f "$device_map.old" ]; then
227             mv -f "$device_map.old" "$device_map"
228         fi
229
230     else
231         rm -f "$device_map.old"
232     fi
233 else
234     # Grub2 part
235     grub-mkdevicemap -n
236 fi
237 echo -n " grub3"
238
239 # import GRUB helper functions (again, updated device map)
240 . /usr/share/kernel-2.6-cn/grub-functions.sh
241
242 if [ "x$GRUB2" = "xno" ]; then
243     # Grub1 part
244     # get install device (0x80 BIOS device)
245     install_device=$(grep '^(hd0)' "$device_map" | \
246         sed -e 's%[^[:space:]]*[[:space:]]*\([^[:space:]]*\)%\1%')
247     if [ -z "$install_device" ]; then
248         echo "."
249         echo "CN: FATAL ERROR while detecting boot disk!"
250         echo "CN: Do not reboot your server and report this to OTRS immediately!"
251         exit 1
252     fi
253
254     # oops, install device is a symlink...
255     if [ -h "$install_device" ]; then
256         install_device_resolved=$(resolve_symlink "$install_device")
257         if [ -z "$install_device_resolved" ]; then
258             install_device_resolved="$install_device"
259         fi
260
261         # try to fix device map with symlink resolved device
262         if [ "x$install_device_resolved" != "x$install_device" ]; then
263             cp_check_and_sed '^\(hd0\)' \
264                 "s;^(hd0).*;(hd0)       $install_device_resolved;" "$device_map" \
265                 || true
266         fi
267     fi
268 else
269     # Grub2 part
270     install_device='(hd0)'
271 fi
272 echo -n " grub4"
273
274 # install GRUB loader
275 # this will work for both Grub1 and Grub2
276 if ! grub-install --no-floppy "$install_device" >/dev/null 2>&1; then
277     echo "."
278     echo "CN: FATAL ERROR while running grub-install on $install_device!"
279     echo "CN: Do not reboot your server and report this to OTRS immediately!"
280     exit 1
281 fi
282 echo -n " grub5"
283
284 # fix possible wrong params in menu.lst
285 if [ "x$GRUB2" = "xno" ]; then
286     # Grub1 part
287     cp_check_and_sed '^# groot=' \
288       "s;^# groot=.*;# groot=$grub_root_device;g" \
289           "$menu_file" || true
290     cp_check_and_sed '^# kopt=' \
291       "s;^# kopt=\(.*\)root=[^[:space:]]*\(.*\);# kopt=\1root=$root_device\2;g" \
292           "$menu_file" || true
293 fi
294 update-grub >/dev/null 2>&1 || true
295 echo -n " grub6"
296
297 # fix possible wrong params in menu.lst
298 if [ "x$GRUB2" = "xno" ]; then
299     # Grub1 part
300     # ... and final stage of devfs/udev brokeness fix
301     if [ "x$install_device_resolved" != "x$install_device" ]; then
302         # get original (symlinked device)
303         root_device=$(find_device_nonresolved "/")
304         if [ -z "$root_device" ]; then
305             root_device=$(find_root_device)
306         fi
307
308         # fix (hd0) mapping
309         cp_check_and_sed '^\(hd0\)' \
310             "s;^(hd0).*;(hd0)   $install_device;" "$device_map" \
311             || true
312
313         # fix global root= invocation
314         cp_check_and_sed '^# kopt=' \
315           "s;^# kopt=\(.*\)root=[^[:space:]]*\(.*\);# kopt=\1root=$root_device\2;g" \
316               "$menu_file" || true
317
318         # fix root= invocation for individual kernel profiles
319         cp_check_and_sed '^kernel' \
320           "s;\(^kernel.*\)root=[^[:space:]]*\(.*\);\1root=$root_device\2;g" \
321               "$menu_file" || true
322     fi
323 fi
324 echo -n " grub7"
325
326 # disable lilo
327 if [ -e /etc/lilo.conf ]; then
328     mv -f /etc/lilo.conf /etc/lilo.conf.old
329     echo -n " lilo"
330 fi
331
332 # mdadm
333 if [ -x /usr/share/mdadm/mkconf ]; then
334     if [ ! -e /etc/mdadm/mdadm.conf ]; then
335         touch /etc/mdadm/mdadm.conf
336     fi
337
338     /usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf.$$
339     if ! cmp -s /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf; then
340         mv /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf
341     fi
342     rm -f /etc/mdadm/mdadm.conf.$$ /etc/initramfs-tools/hooks/md \
343         /var/lib/mdadm/CONF-UNCHECKED
344     echo -n " mdadm"
345 fi
346
347 # update initramfs accordingly (because of mdadm and udev)
348 update-initramfs -u -k all >/dev/null 2>&1 || true
349 echo -n " initramfs"
350
351 # finished
352 echo "."
353
354 ################################################################################
355
356 # rest of configuration...
357 echo -n "CN: Modifying the neccessary system files:"
358
359 # remove group 99
360 if getent group proc >/dev/null 2>&1; then
361     groupdel proc >/dev/null 2>&1
362     echo -n " proc"
363 fi
364
365 # remove oidentd from oident group
366 if getent group oident >/dev/null 2>&1; then
367     # sarge default
368     cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup' \
369       's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup/OIDENT_GROUP=oident/g' \
370           /etc/default/oidentd || true
371
372     # old kernel-2.6-cn default
373     cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc' \
374       's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc/OIDENT_GROUP=oident/g' \
375           /etc/default/oidentd || true
376
377     echo -n " oidentd"
378 fi
379
380 # default kernel parameters
381 rm -f /etc/sysctl.conf.$$
382
383 # old kernel params (skipping some of the obsolete or overrided entries)
384 if [ -e /etc/sysctl.conf ]; then
385     egrep -v 'net\.core\.(r|w)mem_max|net\.ipv4\.tcp_(r|w)mem|vm\.bdflush|net\.ipv4\.ip_local_port_range|kernel\.rtsig-max|net\.ipv4\.tcp_syncookies|kernel\.exec-shield|net\.ipv4\.tcp_max_syn_backlog|net\.ipv4\.tcp_congestion_control|kernel\.exec-shield' \
386         /etc/sysctl.conf >> /etc/sysctl.conf.$$
387 fi
388
389 # finished with merging, move into sysctl.conf
390 cp_mv /etc/sysctl.conf.$$ /etc/sysctl.conf
391 echo -n " sysctl.conf"
392
393 # finished with basic kernel-2.6-cn stuff
394 echo "."
395
396 ################################################################################
397
398 # intro
399 echo -n "CN: Setting up PAM configurations:"
400
401 # update pam_limits accordingly
402 if [ -e /etc/security/limits.conf ]; then
403     rm -f /etc/security/limits.conf.$$
404     cp /etc/security/limits.conf /etc/security/limits.conf.$$
405     cp-update kernel-2.6-cn /etc/security/limits.conf.$$ <<'EOF'
406 *       soft    core        0
407 *               hard    nofile          16384
408 *               soft    nofile          16384
409 @users  soft    nproc       100
410 @users  hard    nproc       150
411 EOF
412     cp_mv /etc/security/limits.conf.$$ /etc/security/limits.conf
413     echo -n " limits"
414 fi
415
416 # check pam.d/login
417 if [ -e /etc/pam.d/login ]; then
418     cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
419         's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
420         /etc/pam.d/login || true
421     echo -n " login"
422 fi
423
424 # check pam.d/ssh
425 if [ -e /etc/pam.d/ssh ]; then
426     cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
427         's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
428         /etc/pam.d/ssh || true
429     echo -n " ssh"
430 fi
431
432 # finished with PAM
433 echo "."
434
435 ################################################################################
436
437 # fix old kernel-2.4-cn postrm
438 if [ -e /var/lib/dpkg/info/kernel-2.4-cn.postrm ]; then
439     echo "CN: Fixed old kernel-2.4-cn postrm."
440     cat > /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ <<'EOF'
441 #!/bin/sh
442
443 set -e
444
445 # be sure, be safe
446 if [ "$1" != "remove" ]; then
447   exit 0
448 fi
449
450 # import CN-functions
451 . /usr/share/carnet-tools/functions.sh
452
453 # remove us from limits.conf
454 cp-update -r kernel-2.4-cn /etc/security/limits.conf
455
456 # remove us from modules
457 cp-update -r kernel-2.4-cn /etc/modules
458 EOF
459     if ! cmp -s /var/lib/dpkg/info/kernel-2.4-cn.postrm \
460         /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$; then
461         mv /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ \
462             /var/lib/dpkg/info/kernel-2.4-cn.postrm
463         chmod +x /var/lib/dpkg/info/kernel-2.4-cn.postrm
464     fi
465     rm -f /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$
466 fi
467
468 ################################################################################
469
470 # fix old kernel-cn postrm
471 if [ -e /var/lib/dpkg/info/kernel-cn.postrm ]; then
472     echo "CN: Fixed old kernel-cn postrm."
473     cat > /var/lib/dpkg/info/kernel-cn.postrm.$$ <<'EOF'
474 #!/bin/sh
475
476 set -e
477
478 # be sure, be safe
479 if [ "$1" != "remove" ]; then
480   exit 0
481 fi
482
483 # import CN-functions
484 . /usr/share/carnet-tools/functions.sh
485
486 # remove us from limits.conf
487 cp-update -r kernel-cn /etc/security/limits.conf
488
489 # remove us from modules
490 cp-update -r kernel-cn /etc/modules
491 EOF
492     if ! cmp -s /var/lib/dpkg/info/kernel-cn.postrm \
493         /var/lib/dpkg/info/kernel-cn.postrm.$$; then
494         mv /var/lib/dpkg/info/kernel-cn.postrm.$$ \
495             /var/lib/dpkg/info/kernel-cn.postrm
496         chmod +x /var/lib/dpkg/info/kernel-cn.postrm
497     fi
498     rm -f /var/lib/dpkg/info/kernel-cn.postrm.$$
499 fi
500
501 ################################################################################
502
503 # dh_installdeb will replace this with shell code automatically
504 # generated by other debhelper scripts.
505
506 #DEBHELPER#
507
508 exit 0