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1#!/bin/sh
2. common.sh
3mountvirt()
4{
5 # TODO: simply put these dirs on the initrd itself
6 mkdir -m 0755 -p /dev /sys /proc /tmp /var /run
7 mkdir -m 0700 -p /root
8
9 mount -t sysfs -o nodev,noexec,nosuid none /sys
10 mount -t proc -o nodev,noexec,nosuid none /proc
11 tmpfs_size="10M"
12# [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
13 mount -t tmpfs -o size=$tmpfs_size,mode=0755 udev /dev
14 mount -t tmpfs -o size=64M,mode=0755 run /run
15 mkdir -m 0755 /dev/pts /run/lock
16 mount -t devpts devpts /dev/pts
17 ln -s /run /run/lock /var/
18}
19makedev()
20{
21 # TODO: simply put these nodes on the initrd itself
22 mkdir -m 0755 -p /dev
23 mknod /dev/null c 1 3
24 mknod /dev/zero c 1 5
25 mknod /dev/tty c 5 0
26 if [ "$FUCK_devconsole" ]; then # FUCK /dev/console
27 mknod /dev/console c 4 1 # tty1 is console; a saner alternative (TODO: fix shutdown to chvt)
28 else
29 mknod /dev/console c 5 1
30 fi
31 for i in 0 1 2 3 4 5 6 7 8; do
32 mknod /dev/tty${i} c 4 ${i}
33 done
34 # TODO: wait for udev? pft.
35 for i in 0 1 2 3 4 5 6 7; do
36 mknod /dev/loop${i} b 7 ${i}
37 done
38}
39loadenv()
40{
41 # TODO: filter the wheat from the chaff here; most of this is unused.
42 # TODO: implement the various boot args
43
44 # Load config files
45# export DPKG_ARCH=
46# . /conf/arch.conf
47# export ROOT=
48# . /conf/initramfs.conf
49# for conf in conf/conf.d/*; do
50# [ -f ${conf} ] && . ${conf}
51# done
52 # Make modprobe quiet
53 export MODPROBE_OPTIONS="-qb"
54 # Export constants
55 export rootmnt=/root
56 # Export bootparam variables
57 export init=/sbin/init
58 export readonly=y
59 export blacklist=
60
61 # Parse command line options
62 for x in $(cat /proc/cmdline); do
63 case $x in
64 init=*) init=${x#init=} ;;
65 root=*)
66 ROOT=${x#root=}
67 case $ROOT in
68 LABEL=*) ROOT="/dev/disk/by-label/${ROOT#LABEL=}" ;;
69 UUID=*) ROOT="/dev/disk/by-uuid/${ROOT#UUID=}" ;;
70 /dev/nfs) [ -z "${BOOT}" ] && BOOT=nfs ;;
71 esac
72 ;;
73 rootflags=*) ROOTFLAGS="-o ${x#rootflags=}" ;;
74 rootfstype=*) ROOTFSTYPE="${x#rootfstype=}" ;;
75 ro) readonly=y ;;
76 rw) readonly=n ;;
77
78 nfsroot=*) NFSROOT="${x#nfsroot=}" ;;
79 ip=*) IPOPTS="${x#ip=}" ;;
80 boot=*) BOOT=${x#boot=} ;;
81
82 resume=*) RESUME="${x#resume=}" ;;
83 noresume) noresume=y ;;
84 blacklist=*) blacklist=${x#blacklist=} ;;
85
86 hostname=*)
87 hostname=${x#hostname=}
88 hostname "$hostname"
89 ;;
90 bootcd_device=*) bootcd_device=${x#bootcd_device=}
91 mkdir -p /cdrom &&
92 mount -r -t hostfs -o "${bootcd_device#hostfs=}" hostfs /cdrom &&
93 bootdone samizdat-cdrom
94 ;;
95 overlay_device=*) overlay_device=${x#overlay_device=}
96 mkdir -p /overlay &&
97 mount -t hostfs -o "${overlay_device#hostfs=}" hostfs /overlay &&
98 bootdone rw-overlay
99 ;;
100 uml_modules=*) uml_modules=${x#uml_modules=}
101 mount -t hostfs -o "${uml_modules#hostfs=}" hostfs /lib/modules ;;
102 esac
103 done
104
105 if [ -z "${noresume}" ]; then
106 export resume=${RESUME}
107 else
108 export noresume
109 fi
110}
111mountunionroot()
112{
113 bootwait samizdat-cdrom squashfs-root
114
115 ufs=
116 if grep -q aufs /proc/filesystems || modprobe aufs; then
117 ufs=aufs
118 elif grep -q unionfs /proc/filesystems || modprobe unionfs; then
119 ufs=unionfs
120 fi
121
122 case $ufs in
123 unionfs) ro=ro;;
124 aufs) ro=rr;;
125 *) panic "mountunionroot: unionfs module not found";;
126 esac
127
128 dirs=;
129 if [ -f /squashes/filesystem.module ]; then
130 while read img; do
131 d=/squashes/"${img%.squashfs}"
132 mountpoint -q /squashes/"${img%.squashfs}" || continue;
133 dirs="$d=$ro${dirs:+:$dirs}"
134 done < /squashes/filesystem.module
135 else
136 for d in /squashes/*; do
137 mountpoint -q "$d" || continue
138 dirs="$d=$ro${dirs:+:$dirs}"
139 done
140 fi
141 [ -n "$dirs" ] ||
142 panic "no squashes. missing/broken images on cdrom?"
143
144 if true; then
145# overlay_tmp=$(mktemp -d /overlay.XXXXXX) &&
146 overlay_tmp=/overlay.$$ && mkdir -p $overlay_tmp &&
147 mount -t tmpfs tmpfs $overlay_tmp &&
148 touch $overlay_tmp/samizdat-filesystem-is-new
149 dirs="$overlay_tmp:$dirs" ||
150 { rmdir $overlay_tmp;
151 panic "mountunionroot: failure creating tmpfs overlay"; }
152 fi
153
154 mount -t $ufs -o rw,dirs="$dirs" $ufs "$rootmnt" ||
155 panic "mountunionroot: $ufs: mount (dirs=$dirs): error: $?"
156}
157insertoverlay() # TODO: copy-up and umount tmpfs. MASSIVELY IMPORTANT!
158{
159 if ! mountpoint -q /overlay; then
160 # rw-overlay was signalled without a mount on /overlay
161 # thus, boot with the current tmpfs overlay
162 mkdir -p /overlay
163 mount -o move $overlay_tmp /overlay
164 return 0
165 fi
166
167 ufs=$(sed -ne 's?^[^ ]* '"$rootmnt"' \(unionfs\|aufs\) .*?\1?p' /proc/mounts)
168
169 case $ufs in
170 unionfs)
171 panic 'insertoverlay: TODO: implement unionfs support'
172
173 mount -o remount,rw,add=/overlay "$rootmnt" ||
174 panic "insertoverlay: remount unionfs (add=/overlay): error: $?"
175
176 #mount -o remount,del=$overlay_tmp && # NO, WRONG, COPY-UP FIRST
177 #umount $overlay_tmp && rmdir $overlay_tmp
178 ;;
179 aufs)
180 mount -o remount,rw,prepend:/overlay=rw "$rootmnt" ||
181 panic "insertoverlay: remount aufs (prepend:/overlay=rw): error: $?"
182
183 mount -o remount,mod:"$overlay_tmp"=ro+wh "$rootmnt" ||
184 panic "insertoverlay: couldn't set aufs branch read-only: $overlay_tmp"
185
186 # copy everything the user reads (not just writes) to the overlay
187 # (this is appropriate for CD-ROM but not testing. TODO: enable)
188 #mount -o remount,coo=all "$rootmnt"
189
190 mkdir -p "$rootmnt"/xino && mount -o move "$overlay_tmp" "$rootmnt"/xino ||
191 panic "insertoverlay: couldn't move mount $overlay_tmp to $rootmnt/xino"
192 ;;
193 *) panic "insertoverlay: unrecognized filesystem ($ufs)";;
194 esac
195
196 bootdone root-mounted
197}
198AppendIfNoSuchLine()
199{
200 local filename="$1"
201 shift
202 if grep -vqF "$1" < "$filename"; then
203 printf '%s\n' "$@" >> "$filename"
204 fi
205}
206gpg_agent_chroot()
207{
208 chroot "$rootmnt" sh -c \
209 'export PATH=/usr/local/sbin:/usr/local/bin:$PATH;
210 killall gpg-agent;
211 samizdat-gpg-agent;
212 killall -USR2 samizdat-pinentry;'
213}
214remove_squashfs_mistakes()
215{
216 # Workaround for bad samizdat-generated upstream squashfs:
217 rm -f "$rootmnt"/etc/ipsec.conf
218 rm -rf "$rootmnt"/etc/samizdat/samizdat-receive-hooks
219 rm -f "$rootmnt"/etc/adjtime
220}
221patchroot()
222{
223 test -e "$rootmnt"/samizdat-filesystem-is-new || return
224 echo Patching livecd root -- $(date) >> /dev/tty7
225 rm -f /dev/console; mknod /dev/console c 4 1
226
227 remove_squashfs_mistakes
228
229 if [ -e /etc/adjtime -a ! -e "$rootmnt"/etc/adjtime ]; then
230 cp /etc/adjtime "$rootmnt"/etc/adjtime
231 fi
232
233 if [ -f "$rootmnt"/cdrom/samizdat/skel.tgz ]; then
234 chroot "$rootmnt" bin/tar -C / --no-same-owner -zxf /cdrom/samizdat/skel.tgz
235 fi
236 chroot "$rootmnt" hostname -F /etc/hostname
237
238 chroot "$rootmnt" update-rc.d samizdat-pids start 15 S
239
240 # We need debian-tor user so that hidden service directory can have the right owner
241 chroot "$rootmnt" adduser --quiet --system --disabled-password --home /var/lib/tor \
242 --no-create-home --shell /bin/bash --group debian-tor
243
244 # TODO: check errors here
245 chroot "$rootmnt" sh -c \
246 'export PATH=/usr/local/sbin:/usr/local/bin:"$PATH" GNUPGHOME=/gpg/gnupghome verbose=1;
247 samizdat-receive -v < /cdrom/samizdat/secrets.mime && samizdat-receive -v < /cdrom/samizdat/public.mime'
248
249 for diversion in /etc/kernel/postinst.d/initramfs-tools /etc/init.d/live-boot /sbin/halt; do
250 chroot "$rootmnt" dpkg-divert --rename --package samizdat --add "$diversion"
251 done
252 cp /bin/halt.montecarlo "$rootmnt"/sbin/halt
253
254 if ! [ -f "$rootmnt"/var/lib/dpkg/info/linux-image-"$(uname -r)".list ]; then
255 chroot "$rootmnt" sh -c \
256 'dpkg --fsys-tarfile /cdrom/samizdat/debs/linux-image-$(uname -r)_*.deb | tar -C / -x; depmod -a'
257 fi
258
259 # disable some of GRML's many consoles.
260# sed -i -e 's/^\([3456789]\|1[012]\):/#\1:/' "$rootmnt"/etc/inittab
261# sed -i -e 's/^NUM_CONSOLES=12/NUM_CONSOLES=0/' "$rootmnt"/usr/bin/zsh-login
262
263 # these GRML scripts implement a "sendsigs" which does not respect omit.d
264 sed -i -e 's/^\(l0:.*\)grml-halt$/\1rc 0/' "$rootmnt"/etc/inittab
265 sed -i -e 's/^\(l6:.*\)grml-reboot$/\1rc 6/' "$rootmnt"/etc/inittab
266 chroot "$rootmnt" update-rc.d sendsigs stop 20 0 6
267
268 echo Done patching livecd root -- $(date) >>/dev/tty7
269 rm "$rootmnt"/samizdat-filesystem-is-new
270}
271movemounts()
272{
273 # Move mounted filesystems to the root filesystem
274 while read dev mp rest; do
275 case "$mp" in
276 "$rootmnt"|"$rootmnt"/*|/|/proc|/dev|/dev/pts|/sys) continue ;;
277 /mnt.samizdat.*)
278 #umount -l "$mp"
279 target="$rootmnt/media/${dev##*/}"
280 ;;
281 /overlay.*) umount -l $mp; continue ;;
282 *) target="$rootmnt$mp" ;;
283 esac
284 mkdir -p "$target"
285 mount -n -o move "$mp" "$target"
286 done </proc/mounts
287 mount --rbind /dev "$rootmnt"/dev
288 mount --bind /proc "$rootmnt"/proc
289 ln -sf /proc/mounts "$rootmnt"/etc/mtab
290}
291launch_init()
292{
293 # bad init= command line?
294 if [ ! -x "$rootmnt$init" ]; then
295 panic "init does not exist or is not executable (init=$init)"
296 fi
297 ln -sf /proc/mounts "$rootmnt"/etc/mtab
298 export CONSOLE=/dev/tty1
299 exec chroot "$rootmnt" "$init" "$@" <"$rootmnt$CONSOLE" >"$rootmnt$CONSOLE" 2>&1
300 panic "exec init failed (init=$init)"
301# exec run-init -c "$CONSOLE" "$rootmnt" "$init" "$@"
302# panic "exec run-init failed (init=$init)"
303}
304start_udev()
305{
306 echo > /proc/sys/kernel/hotplug
307 mkdir -p /dev/.udev/db/ /dev/.udev/queue/
308# mkdir -p "$LOGBASE"; sh -c "udevd --resolve-names=never --debug >$LOGBASE/udevd."'$$'".log 2>&1" &
309 udevd --resolve-names=never --daemon
310 udevadm trigger --action=add
311# udevadm settle
312}
313stop_udev()
314{
315 for proc in /proc/[0-9]*; do
316 [ -x $proc/exe ] || continue
317 [ "$(readlink $proc/exe)" = /sbin/udevd ] && kill ${proc#/proc/}
318 done
319 # ignore any failed event because the init script will trigger again all events
320 nuke /dev/.udev/queue/
321}
322killeverything()
323{
324 # TODO: exempt: interactive shell(s) (AND CHILDREN) (or: anything with
325 # a tty?), samizdat-agent, fsck(!!), ...?
326
327# exempt_cmdline="$(printf "sh\0-i\0")"
328 force=
329 while true; do
330 killme=
331 for proc in /proc/[0-9]*; do
332 [ $proc != /proc/1 -a $proc != /proc/$$ -a -x $proc/exe ] || continue
333# [ "$(cat $proc/cmdline)" != "$exempt_cmdline" ] || continue
334 read pid tcomm state ppid pgrp sid tty_nr tty_pgrp rest < $proc/stat
335 [ $tty_nr = 0 ] || continue
336 killme="$killme ${proc#/proc/}"
337 done
338 if [ -n "$killme" ]; then
339 kill $force $killme
340 else
341 break
342 fi
343 force=-KILL
344 done
345}