325 lines
8.5 KiB
Bash
325 lines
8.5 KiB
Bash
#!/bin/sh
|
|
# This file will be in /init_functions.sh inside the initramfs.
|
|
IP=172.16.42.1
|
|
TELNET_PORT=23
|
|
|
|
# Redirect stdout and stderr to logfile
|
|
setup_log() {
|
|
# Bail out if PMOS_NO_OUTPUT_REDIRECT is set
|
|
echo "### postmarketOS initramfs ###"
|
|
grep -q PMOS_NO_OUTPUT_REDIRECT /proc/cmdline && return
|
|
|
|
# Print a message about what is going on to the normal output
|
|
echo "NOTE: All output from the initramfs gets redirected to:"
|
|
echo "/pmOS_init.log"
|
|
echo "If you want to disable this behavior (e.g. because you're"
|
|
echo "debugging over serial), please add this to your kernel"
|
|
echo "command line: PMOS_NO_OUTPUT_REDIRECT"
|
|
|
|
# Start redirect, print the first line again
|
|
exec >/pmOS_init.log 2>&1
|
|
echo "### postmarketOS initramfs ###"
|
|
}
|
|
|
|
mount_proc_sys_dev() {
|
|
# mdev
|
|
mount -t proc -o nodev,noexec,nosuid proc /proc
|
|
mount -t sysfs -o nodev,noexec,nosuid sysfs /sys
|
|
|
|
mkdir /config
|
|
mount -t configfs -o nodev,noexec,nosuid configfs /config
|
|
|
|
# /dev/pts (needed for telnet)
|
|
mkdir -p /dev/pts
|
|
mount -t devpts devpts /dev/pts
|
|
}
|
|
|
|
setup_mdev() {
|
|
echo /sbin/mdev >/proc/sys/kernel/hotplug
|
|
mdev -s
|
|
}
|
|
|
|
mount_subpartitions() {
|
|
for i in /dev/mmcblk*; do
|
|
case "$(kpartx -l "$i" 2>/dev/null | wc -l)" in
|
|
2)
|
|
echo "Mount subpartitions of $i"
|
|
kpartx -afs "$i"
|
|
break
|
|
;;
|
|
*)
|
|
continue
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
find_root_partition() {
|
|
# The partition layout is one of the following:
|
|
# a) boot, root partitions on sdcard
|
|
# b) boot, root partition on the "system" partition (which has its
|
|
# own partition header! so we have partitions on partitions!)
|
|
#
|
|
# mount_subpartitions() must get executed before calling
|
|
# find_root_partition(), so partitions from b) also get found.
|
|
#
|
|
# However, after executing mount_subpartitions(), the partitions
|
|
# from a) get mounted to /dev/mapper - and then you can only use
|
|
# the ones from /dev/mapper, not the original partition paths (they
|
|
# will appear as busy when trying to mount them). This is an
|
|
# unwanted side-effect, that we must deal with.
|
|
# The subpartitions from b) get mounted to /dev/mapper, and this is
|
|
# what we want.
|
|
#
|
|
# To deal with the side-effect, we use the partitions from
|
|
# /dev/mapper first, and then fall back to partitions with all paths
|
|
# (in case the user inserted an SD card after mount_subpartitions()
|
|
# ran!).
|
|
|
|
# Try the partitions in /dev/mapper first.
|
|
for id in pmOS_root crypto_LUKS; do
|
|
DEVICE="$(blkid | grep /dev/mapper | grep "$id" \
|
|
| cut -d ":" -f 1)"
|
|
[ -z "$DEVICE" ] || break
|
|
done
|
|
|
|
# Then try all devices
|
|
if [ -z "$DEVICE" ]; then
|
|
for id in pmOS_root crypto_LUKS; do
|
|
DEVICE="$(blkid | grep "$id" | cut -d ":" -f 1)"
|
|
[ -z "$DEVICE" ] || break
|
|
done
|
|
fi
|
|
echo "$DEVICE"
|
|
}
|
|
|
|
find_boot_partition() {
|
|
findfs LABEL="pmOS_boot"
|
|
}
|
|
|
|
mount_boot_partition() {
|
|
partition=$(find_boot_partition)
|
|
if [ -z "$partition" ]; then
|
|
echo "ERROR: boot partition not found!"
|
|
show_splash /splash-noboot.ppm.gz
|
|
loop_forever
|
|
fi
|
|
echo "Mount boot partition ($partition)"
|
|
mount -r "$partition" /boot
|
|
}
|
|
|
|
# $1: initramfs-extra path
|
|
extract_initramfs_extra() {
|
|
initramfs_extra="$1"
|
|
if [ ! -e "$initramfs_extra" ]; then
|
|
echo "ERROR: initramfs-extra not found!"
|
|
show_splash /splash-noinitramfsextra.ppm.gz
|
|
loop_forever
|
|
fi
|
|
echo "Extract $initramfs_extra"
|
|
gzip -d -c "$initramfs_extra" | cpio -i
|
|
}
|
|
|
|
wait_root_partition() {
|
|
while [ -z "$(find_root_partition)" ]; do
|
|
show_splash /splash-nosystem.ppm.gz
|
|
echo "Could not find the root partition."
|
|
echo "Maybe you need to insert the sdcard, if your device has"
|
|
echo "any? Trying again in one second..."
|
|
sleep 1
|
|
done
|
|
}
|
|
|
|
resize_root_partition() {
|
|
partition=$(find_root_partition)
|
|
# Only resize the partition if it's inside the device-mapper, which means
|
|
# that the partition is stored as a subpartition inside another one.
|
|
# In this case we want to resize it to use all the unused space of the
|
|
# external partition.
|
|
if [ -z "${partition##"/dev/mapper/"*}" ]; then
|
|
# Get physical device
|
|
partition_dev=$(dmsetup deps -o devname "$partition" | \
|
|
awk -F "[()]" '{print "/dev/"$2}')
|
|
# Check if there is unallocated space at the end of the device
|
|
if parted -s "$partition_dev" print free | tail -n2 | \
|
|
head -n1 | grep -qi "free space"; then
|
|
echo "Resize root partition ($partition)"
|
|
# unmount subpartition, resize and remount it
|
|
kpartx -d "$partition"
|
|
parted -s "$partition_dev" resizepart 2 100%
|
|
kpartx -afs "$partition_dev"
|
|
fi
|
|
fi
|
|
# Detect and resize root partition on QEMU
|
|
if [ -z "${partition##"/dev/hda"*}" ]; then
|
|
echo "Resize root partition ($partition)"
|
|
parted -s /dev/hda resizepart 2 100%
|
|
partprobe
|
|
fi
|
|
}
|
|
|
|
unlock_root_partition() {
|
|
partition="$(find_root_partition)"
|
|
if cryptsetup isLuks "$partition"; then
|
|
until cryptsetup status root | grep -qwi active; do
|
|
start_usb_unlock
|
|
cryptsetup luksOpen "$partition" root || continue
|
|
done
|
|
# Show again the loading splashscreen
|
|
show_splash /splash-loading.ppm.gz
|
|
fi
|
|
}
|
|
|
|
resize_root_filesystem() {
|
|
partition="$(find_root_partition)"
|
|
touch /etc/mtab # see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=673323
|
|
echo "Check/repair root filesystem ($partition)"
|
|
e2fsck -f -y "$partition"
|
|
echo "Resize root filesystem ($partition)"
|
|
resize2fs -f "$partition"
|
|
}
|
|
|
|
mount_root_partition() {
|
|
partition="$(find_root_partition)"
|
|
echo "Mount root partition ($partition)"
|
|
mount -t ext4 -o ro "$partition" /sysroot
|
|
if ! [ -e /sysroot/usr ]; then
|
|
echo "ERROR: unable to mount root partition!"
|
|
show_splash /splash-mounterror.ppm.gz
|
|
loop_forever
|
|
fi
|
|
}
|
|
|
|
setup_usb_network_android() {
|
|
# Only run, when we have the android usb driver
|
|
SYS=/sys/class/android_usb/android0
|
|
[ -e "$SYS" ] || return
|
|
|
|
# Do the setup
|
|
printf "%s" "0" >"$SYS/enable"
|
|
printf "%s" "18D1" >"$SYS/idVendor"
|
|
printf "%s" "D001" >"$SYS/idProduct"
|
|
printf "%s" "rndis" >"$SYS/functions"
|
|
printf "%s" "1" >"$SYS/enable"
|
|
}
|
|
|
|
setup_usb_network_configfs() {
|
|
CONFIGFS=/config/usb_gadget
|
|
[ -e "$CONFIGFS" ] || return
|
|
|
|
mkdir $CONFIGFS/g1
|
|
printf "%s" "18D1" >"$CONFIGFS/g1/idVendor"
|
|
printf "%s" "D001" >"$CONFIGFS/g1/idProduct"
|
|
|
|
mkdir $CONFIGFS/g1/strings/0x409
|
|
|
|
mkdir $CONFIGFS/g1/functions/rndis.usb0
|
|
|
|
mkdir $CONFIGFS/g1/configs/c.1
|
|
mkdir $CONFIGFS/g1/configs/c.1/strings/0x409
|
|
printf "%s" "rndis" > $CONFIGFS/g1/configs/c.1/strings/0x409/configuration
|
|
|
|
ln -s $CONFIGFS/g1/functions/rndis.usb0 $CONFIGFS/g1/configs/c.1
|
|
|
|
# See also: #338
|
|
# shellcheck disable=SC2005
|
|
echo "$(ls /sys/class/udc)" > $CONFIGFS/g1/UDC
|
|
}
|
|
|
|
setup_usb_network() {
|
|
# Only run once
|
|
_marker="/tmp/_setup_usb_network"
|
|
[ -e "$_marker" ] && return
|
|
touch "$_marker"
|
|
echo "Setup usb network"
|
|
# Run all usb network setup functions (add more below!)
|
|
setup_usb_network_android
|
|
setup_usb_network_configfs
|
|
}
|
|
|
|
start_udhcpd() {
|
|
# Only run once
|
|
[ -e /etc/udhcpd.conf ] && return
|
|
|
|
# Get usb interface
|
|
INTERFACE=""
|
|
ifconfig rndis0 "$IP" && INTERFACE=rndis0
|
|
if [ -z $INTERFACE ]; then
|
|
ifconfig usb0 "$IP" && INTERFACE=usb0
|
|
fi
|
|
|
|
# Create /etc/udhcpd.conf
|
|
{
|
|
echo "start 172.16.42.2"
|
|
echo "end 172.16.42.2"
|
|
echo "auto_time 0"
|
|
echo "decline_time 0"
|
|
echo "conflict_time 0"
|
|
echo "lease_file /var/udhcpd.leases"
|
|
echo "interface $INTERFACE"
|
|
echo "option subnet 255.255.255.0"
|
|
} >/etc/udhcpd.conf
|
|
|
|
echo "Start the dhcpcd daemon (forks into background)"
|
|
udhcpd
|
|
}
|
|
|
|
start_usb_unlock() {
|
|
# Only run once
|
|
_marker="/tmp/_start_usb_unlock"
|
|
[ -e "$_marker" ] && return
|
|
touch "$_marker"
|
|
|
|
# Set up networking
|
|
setup_usb_network
|
|
start_udhcpd
|
|
|
|
# Telnet splash
|
|
show_splash /splash-telnet.ppm.gz
|
|
|
|
echo "Start the telnet daemon (unlock encrypted partition)"
|
|
{
|
|
echo '#!/bin/sh'
|
|
echo '. /init_functions.sh'
|
|
echo 'unlock_root_partition'
|
|
echo 'echo_connect_ssh_message'
|
|
echo 'killall cryptsetup'
|
|
echo "pkill -f telnetd.*:${TELNET_PORT}"
|
|
} >/telnet_connect.sh
|
|
chmod +x /telnet_connect.sh
|
|
telnetd -b "${IP}:${TELNET_PORT}" -l /telnet_connect.sh
|
|
}
|
|
|
|
# $1: path to ppm.gz file
|
|
show_splash() {
|
|
gzip -c -d "$1" >/tmp/splash.ppm
|
|
fbsplash -s /tmp/splash.ppm
|
|
}
|
|
|
|
echo_connect_ssh_message() {
|
|
echo "Your root partition has been decrypted successfully!"
|
|
echo "You can connect to your device using SSH in a few seconds:"
|
|
echo "ssh user@$IP"
|
|
}
|
|
|
|
start_msm_refresher() {
|
|
# shellcheck disable=SC2154,SC2086
|
|
if [ "${deviceinfo_msm_refresher}" = "true" ]; then
|
|
/usr/sbin/msm-fb-refresher --loop &
|
|
fi
|
|
}
|
|
|
|
set_framebuffer_mode() {
|
|
[ -e "/sys/class/graphics/fb0/modes" ] || return
|
|
[ -z "$(cat /sys/class/graphics/fb0/mode)" ] || return
|
|
|
|
_mode="$(cat /sys/class/graphics/fb0/modes)"
|
|
echo "Setting framebuffer mode to: $_mode"
|
|
echo "$_mode" > /sys/class/graphics/fb0/mode
|
|
}
|
|
|
|
loop_forever() {
|
|
while true; do
|
|
sleep 1
|
|
done
|
|
}
|