Maemo 5 N900 - Encrypted home resources
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#/bin/sh
# Copyright(C) 2006 Nokia Corporation.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
#Modified by NIN101(http://nin101.uni.cx).
#Provides: Shell if demanded by user; maps an LUKS encrypted partition
#Requires busybox-power or at least the applets "loadkmap" & "watchdog"
#WARNING: Charging WON'T work when device is turned off before the
#user pluggs in the charger. Or: It will, but you have to enter
#your LUKS password at a state where the screen is very very dark :-).
#This is because home gets mounted before BME starts.
umask 022
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MODULES="twl4030-vibra
dspbridge
iommu2
omap3-iommu
omap34xxcam-mod
omap_previewer_hack
board-rx51-camera
et8ek8
ad5820
adp1653
vs6555
uinput"
if [ -L /var/run ]
then
rm -f /var/run
mkdir /var/run
fi
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
mount -n -t tmpfs -o size=1M,noatime tmpfs /tmp
mount -n -t tmpfs -o size=256k,mode=0755,nosuid,noatime tmpfs /var/run
#MODE=`getbootstate`
# This doesn't really belong here, but we have start this so early
start_bootchart(){
if [ -e /bootchart -a -e /etc/init.d/bootchart ]
then
/etc/init.d/bootchart start
fi
}
start_softupd()
{
echo "Starting software updater"
/etc/init.d/softupd.rcS
}
in_flash_mode()
{
grep update /proc/component_version 1>/dev/null 2>/dev/null
}
mount_devpts() {
TTYGRP=5
TTYMODE=620
if [ ! -d /dev/pts ]
then
mkdir /dev/pts
fi
if [ ! -c /dev/ptmx ]
then
mknod /dev/ptmx c 5 2
chmod 666 /dev/ptmx
fi
mount -n -t devpts -ogid=$TTYGRP,mode=$TTYMODE devpts /dev/pts
rm -rf /var/tmp/*
}
# I hate this hack. -- Md
make_extra_nodes () {
if [ "$(echo /lib/udev/devices/*)" != "/lib/udev/devices/*" ]; then
cp -a /lib/udev/devices/* /dev/
fi
grep '^[^#]' /etc/udev/links.conf | \
while read type name arg1; do
[ "$type" -a "$name" -a ! -e "/dev/$name" -a ! -L "/dev/$name" ] ||continue
case "$type" in
L)
ln -s $arg1 /dev/$name
;;
D)
mkdir -p /dev/$name
;;
M)
mknod /dev/$name $arg1 && chmod 600 /dev/$name
;;
*)
echo "unparseable line ($type $name $arg1)"
;;
esac
done
}
load_extra_modules () {
echo -n "Loading extra modules..."
for i in $MODULES; do
echo "Loading $i"
modprobe -q $i ||:
done
echo "done."
}
# Mount home and paging partitions if they are available
mount_mmc(){
device=$1
swap=$device"p1"
home=$device"p2"
test=$device"p3"
if [ -e $test ]
then
echo "Mounting partition $swap for paging"
# swap disabled as a workaround for Xorg bug, per NB#111807.
swapon $swap
modprobe ext3
echo "Mounting partition $home as home directory"
mount -t ext3 -o noatime,commit=1,data=writeback $home /home
else
echo "No paging partition available as $swap"
echo "No home partition available as $home"
fi
}
prepare_start_udev()
{
. /etc/udev/udev.conf
if [ -z "$tmpfs_size" ]; then
tmpfs_size="1M"
fi
ACTION=add
echo -n "Mounting a tmpfs over /dev..."
mount -n -o size=$tmpfs_size,mode=0755,noatime -t tmpfs none /dev
echo "done."
mkdir -p /dev/.udev/db /dev/.udev/queue
echo "" > /sys/kernel/uevent_helper
echo -n "Creating extra device nodes... "
make_extra_nodes
echo "done."
}
start_udev()
{
prepare_start_udev
/sbin/udevd --daemon
}
make_nodes()
{
echo -n "Creating device nodes... "
if [ -x /sbin/udevtrigger ]; then
/sbin/udevtrigger
else
/sbin/udevadm trigger
#wait for all events
/sbin/udevadm settle
fi
echo "done."
}
# When modifying this script, do not forget that between the time that
# the new /dev has been mounted and udevtrigger has been run there will be
# no /dev/null. This also means that you cannot use the "&" shell command.
start_bootchart
if in_flash_mode; then
start_softupd
reboot
fi
# here only in non-flash mode
# No need to start udev before softupd anymore
start_udev
make_nodes
load_extra_modules
mount_devpts
mount -n -o size=64M,nosuid,nodev,noatime -t tmpfs tmpfs /dev/shm
# mount_mmc "/dev/mmcblk0"
/sbin/hwclock -s || true
watchdog -t 10 /dev/twl4030_wdt
watchdog -t 10 /dev/watchdog
modprobe dm_mod
modprobe dm_loop
#LED part taken from a post on talk.maemo.org by Mentalist Traceur. Thx
modprobe leds-lp5523
for i in 1 2 3 4 5 6; do
echo 25 > /sys/class/leds/lp5523\:kb$i/brightness
done
loadkmap < /nokia-n900.kmap
CONT=0
while [ "$CONT" -ne 1 ] ; do
cryptsetup luksOpen /dev/mmcblk0p2 home_luks
if [ "$?" -eq 0 ] || [ -b /dev/mapper/home_luks ] ; then
CONT=1
fi
done
echo "Press any key to enable shell"
read -n 1 -t 2 shellmode
if [ -n "$shellmode" ] ; then
sh
fi
killall watchdog
# cannot collect product data if we are under SDK
# it should not be run there, but explicit check is better
OPI=`which osso-product-info`
if [ x$OPI != x ]; then
# Make sure /etc/hostname and /etc/hosts exist and are not empty. They do not
# exist if this is the very first boot, and they may be empty if power cut
# happended before the contents has reached the media.
if [ ! -f /etc/hostname -o ! -s /etc/hostname -o ! -f /etc/hosts -o ! -s /etc/hosts ]; then
hostname="`$OPI -qOSSO_PRODUCT_SHORT_NAME | sed 's/ /-/g'`"
echo $hostname > /etc/hostname
echo "127.0.0.1 $hostname localhost" > /etc/hosts
chmod 644 /etc/hosts
fi
# Similarly, make sure /etc/issue and /etc/issue.net are fine
if [ ! -f /etc/issue -o ! -s /etc/issue -o ! -f /etc/issue.net -o ! -s /etc/issue.net -o -f /home/user/first-boot-flag ]; then
full_name=`$OPI -qOSSO_PRODUCT_RELEASE_FULL_NAME`
echo "$full_name \n \l" > /etc/issue
echo "" >> /etc/issue
echo "$full_name %h" > /etc/issue.net
fi
fi
# Note, normally we would have to sync the FS to make sure the files have
# reached the media. But because the files are small, they would be either
# empty or non-existing in case of an unclean reboot, and we handle both
# cases.
hostname -F /etc/hostname
ifup lo &
#echo /sbin/udevsend > /proc/sys/kernel/hotplug
#: > /var/run/utmp
#chmod 664 /var/run/utmp
#chgrp utmp /var/run/utmp
rm -f /etc/mtab
cat /proc/mounts > /etc/mtab
echo 0 > /proc/sys/net/ipv4/conf/all/accept_redirects
echo 0 > /proc/sys/net/ipv4/conf/default/accept_redirects
echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter
echo 1 > /proc/sys/net/ipv4/conf/default/rp_filter
echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
echo "49152 65535" > /proc/sys/net/ipv4/ip_local_port_range
echo 6000 > /sys/class/bluetooth/hci0/idle_timeout
# adjust other kernel parameters to minimize memory consumption
# and optimize IO pressure
echo 16 > /proc/sys/kernel/pty/max
echo 1024 > /proc/sys/kernel/threads-max
echo 8192 > /proc/sys/fs/file-max
echo 100 > /proc/sys/vm/swappiness
echo 5 > /proc/sys/vm/page-cluster
echo 500 > /proc/sys/vm/dirty_expire_centisecs
echo 65536 > /proc/sys/net/core/rmem_default
echo 16384 > /proc/sys/net/core/wmem_default
echo 20 > /proc/sys/net/unix/max_dgram_qlen
# Finalize SSU in case it has been interrupted by power failure
if test -x /usr/libexec/ham-rescue.sh; then
/usr/libexec/ham-rescue.sh
fi
# Disable sysrq to avoid accidental console-carbage resets.
echo 0 > /proc/sys/kernel/sysrq
echo "/what/me/worry" > /proc/sys/kernel/core_pattern
echo 1 > /proc/sys/kernel/panic
echo 1 > /proc/sys/kernel/panic_on_oops
exit 0