842db355c1
This causes initramfs to skip calling 'kpartx' when pmOS has been installed on an external disk (e.g. sdcard). Fixes mounting pmOS_boot by label (#774).
304 lines
7.9 KiB
Bash
304 lines
7.9 KiB
Bash
#!/bin/sh
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# This file will be in /init_functions.sh inside the initramfs.
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IP=172.16.42.1
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# Redirect stdout and stderr to logfile
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setup_log() {
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# Bail out if PMOS_NO_OUTPUT_REDIRECT is set
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echo "### postmarketOS initramfs ###"
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grep -q PMOS_NO_OUTPUT_REDIRECT /proc/cmdline && return
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# Print a message about what is going on to the normal output
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echo "NOTE: All output from the initramfs gets redirected to:"
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echo "/pmOS_init.log"
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echo "If you want to disable this behavior (e.g. because you're"
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echo "debugging over serial), please add this to your kernel"
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echo "command line: PMOS_NO_OUTPUT_REDIRECT"
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# Start redirect, print the first line again
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exec >/pmOS_init.log 2>&1
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echo "### postmarketOS initramfs ###"
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}
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mount_proc_sys_dev() {
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# mdev
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mount -t proc -o nodev,noexec,nosuid proc /proc
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mount -t sysfs -o nodev,noexec,nosuid sysfs /sys
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mkdir /config
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mount -t configfs -o nodev,noexec,nosuid configfs /config
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# /dev/pts (needed for telnet)
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mkdir -p /dev/pts
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mount -t devpts devpts /dev/pts
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}
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setup_mdev() {
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echo /sbin/mdev >/proc/sys/kernel/hotplug
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mdev -s
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}
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mount_subpartitions() {
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# Do not create subpartition mappings if pmOS_boot
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# already exists (e.g. installed on an sdcard)
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blkid |grep -q "pmOS_boot" && return
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for i in /dev/mmcblk*; do
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case "$(kpartx -l "$i" 2>/dev/null | wc -l)" in
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2)
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echo "Mount subpartitions of $i"
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kpartx -afs "$i"
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break
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;;
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*)
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continue
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;;
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esac
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done
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}
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find_root_partition() {
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# The partition layout is one of the following:
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# a) boot, root partitions on sdcard
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# b) boot, root partition on the "system" partition (which has its
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# own partition header! so we have partitions on partitions!)
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#
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# mount_subpartitions() must get executed before calling
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# find_root_partition(), so partitions from b) also get found.
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# Try partitions in /dev/mapper and /dev/dm-* first
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for id in pmOS_root crypto_LUKS; do
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for path in /dev/mapper /dev/dm; do
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DEVICE="$(blkid | grep "$path" | grep "$id" \
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| cut -d ":" -f 1)"
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[ -z "$DEVICE" ] || break 2
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done
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done
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# Then try all devices
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if [ -z "$DEVICE" ]; then
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for id in pmOS_root crypto_LUKS; do
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DEVICE="$(blkid | grep "$id" | cut -d ":" -f 1)"
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[ -z "$DEVICE" ] || break
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done
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fi
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echo "$DEVICE"
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}
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find_boot_partition() {
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findfs LABEL="pmOS_boot"
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}
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mount_boot_partition() {
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partition=$(find_boot_partition)
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if [ -z "$partition" ]; then
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echo "ERROR: boot partition not found!"
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show_splash /splash-noboot.ppm.gz
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loop_forever
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fi
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echo "Mount boot partition ($partition)"
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mount -r "$partition" /boot
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}
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# $1: initramfs-extra path
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extract_initramfs_extra() {
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initramfs_extra="$1"
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if [ ! -e "$initramfs_extra" ]; then
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echo "ERROR: initramfs-extra not found!"
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show_splash /splash-noinitramfsextra.ppm.gz
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loop_forever
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fi
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echo "Extract $initramfs_extra"
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gzip -d -c "$initramfs_extra" | cpio -i
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}
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wait_root_partition() {
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while [ -z "$(find_root_partition)" ]; do
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show_splash /splash-nosystem.ppm.gz
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echo "Could not find the root partition."
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echo "Maybe you need to insert the sdcard, if your device has"
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echo "any? Trying again in one second..."
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sleep 1
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done
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}
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resize_root_partition() {
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partition=$(find_root_partition)
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# Only resize the partition if it's inside the device-mapper, which means
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# that the partition is stored as a subpartition inside another one.
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# In this case we want to resize it to use all the unused space of the
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# external partition.
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if [ -z "${partition##"/dev/mapper/"*}" ]; then
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# Get physical device
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partition_dev=$(dmsetup deps -o devname "$partition" | \
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awk -F "[()]" '{print "/dev/"$2}')
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# Check if there is unallocated space at the end of the device
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if parted -s "$partition_dev" print free | tail -n2 | \
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head -n1 | grep -qi "free space"; then
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echo "Resize root partition ($partition)"
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# unmount subpartition, resize and remount it
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kpartx -d "$partition"
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parted -s "$partition_dev" resizepart 2 100%
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kpartx -afs "$partition_dev"
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fi
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fi
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# Detect and resize root partition on QEMU
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if [ -z "${partition##"/dev/hda"*}" ]; then
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echo "Resize root partition ($partition)"
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parted -s /dev/hda resizepart 2 100%
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partprobe
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fi
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}
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unlock_root_partition() {
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partition="$(find_root_partition)"
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if cryptsetup isLuks "$partition"; then
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until cryptsetup status root | grep -qwi active; do
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start_onscreen_keyboard
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done
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# Show again the loading splashscreen
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show_splash /splash-loading.ppm.gz
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fi
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}
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resize_root_filesystem() {
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partition="$(find_root_partition)"
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touch /etc/mtab # see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=673323
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echo "Check/repair root filesystem ($partition)"
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e2fsck -f -y "$partition"
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echo "Resize root filesystem ($partition)"
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resize2fs -f "$partition"
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}
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mount_root_partition() {
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partition="$(find_root_partition)"
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echo "Mount root partition ($partition)"
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mount -t ext4 -o ro "$partition" /sysroot
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if ! [ -e /sysroot/usr ]; then
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echo "ERROR: unable to mount root partition!"
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show_splash /splash-mounterror.ppm.gz
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loop_forever
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fi
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}
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setup_usb_network_android() {
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# Only run, when we have the android usb driver
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SYS=/sys/class/android_usb/android0
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[ -e "$SYS" ] || return
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# Do the setup
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printf "%s" "0" >"$SYS/enable"
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printf "%s" "18D1" >"$SYS/idVendor"
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printf "%s" "D001" >"$SYS/idProduct"
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printf "%s" "rndis" >"$SYS/functions"
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printf "%s" "1" >"$SYS/enable"
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}
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setup_usb_network_configfs() {
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CONFIGFS=/config/usb_gadget
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[ -e "$CONFIGFS" ] || return
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mkdir $CONFIGFS/g1
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printf "%s" "18D1" >"$CONFIGFS/g1/idVendor"
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printf "%s" "D001" >"$CONFIGFS/g1/idProduct"
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mkdir $CONFIGFS/g1/strings/0x409
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mkdir $CONFIGFS/g1/functions/rndis.usb0
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mkdir $CONFIGFS/g1/configs/c.1
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mkdir $CONFIGFS/g1/configs/c.1/strings/0x409
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printf "%s" "rndis" > $CONFIGFS/g1/configs/c.1/strings/0x409/configuration
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ln -s $CONFIGFS/g1/functions/rndis.usb0 $CONFIGFS/g1/configs/c.1
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# See also: #338
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# shellcheck disable=SC2005
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echo "$(ls /sys/class/udc)" > $CONFIGFS/g1/UDC
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}
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setup_usb_network() {
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# Only run once
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_marker="/tmp/_setup_usb_network"
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[ -e "$_marker" ] && return
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touch "$_marker"
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echo "Setup usb network"
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# Run all usb network setup functions (add more below!)
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setup_usb_network_android
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setup_usb_network_configfs
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}
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start_udhcpd() {
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# Only run once
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[ -e /etc/udhcpd.conf ] && return
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# Get usb interface
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INTERFACE=""
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ifconfig rndis0 "$IP" && INTERFACE=rndis0
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if [ -z $INTERFACE ]; then
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ifconfig usb0 "$IP" && INTERFACE=usb0
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fi
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# Create /etc/udhcpd.conf
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{
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echo "start 172.16.42.2"
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echo "end 172.16.42.2"
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echo "auto_time 0"
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echo "decline_time 0"
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echo "conflict_time 0"
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echo "lease_file /var/udhcpd.leases"
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echo "interface $INTERFACE"
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echo "option subnet 255.255.255.0"
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} >/etc/udhcpd.conf
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echo "Start the dhcpcd daemon (forks into background)"
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udhcpd
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}
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start_onscreen_keyboard(){
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# Set up directfb and tslib for osk-sdl
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# Note: linux_input module is disabled since it will try to take over
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# the touchscreen device from tslib (e.g. on the N900)
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export DFBARGS="system=fbdev,no-cursor,disable-module=linux_input"
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# shellcheck disable=SC2154
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if [ ! -z "$deviceinfo_dev_touchscreen" ]; then
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export TSLIB_TSDEVICE="$deviceinfo_dev_touchscreen"
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fi
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osk-sdl -n root -d "$partition" -c /etc/osk.conf -v > /osk-sdl.log 2>&1
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unset DFBARGS
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unset TSLIB_TSDEVICE
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}
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# $1: path to ppm.gz file
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show_splash() {
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gzip -c -d "$1" >/tmp/splash.ppm
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fbsplash -s /tmp/splash.ppm
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}
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echo_connect_ssh_message() {
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echo "Your root partition has been decrypted successfully!"
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echo "You can connect to your device using SSH in a few seconds:"
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echo "ssh user@$IP"
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}
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start_msm_refresher() {
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# shellcheck disable=SC2154,SC2086
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if [ "${deviceinfo_msm_refresher}" = "true" ]; then
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/usr/sbin/msm-fb-refresher --loop &
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fi
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}
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set_framebuffer_mode() {
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[ -e "/sys/class/graphics/fb0/modes" ] || return
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[ -z "$(cat /sys/class/graphics/fb0/mode)" ] || return
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_mode="$(cat /sys/class/graphics/fb0/modes)"
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echo "Setting framebuffer mode to: $_mode"
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echo "$_mode" > /sys/class/graphics/fb0/mode
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}
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loop_forever() {
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while true; do
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sleep 1
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done
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}
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