377 lines
10 KiB
Bash
377 lines
10 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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attempt_count=0
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echo "Trying to mount subpartitions for 10 seconds..."
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while [ -z "$(find_boot_partition)" ]; do
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partitions="$(grep -v "loop\|ram" < /proc/diskstats |\
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sed 's/\(\s\+[0-9]\+\)\+\s\+//;s/ .*//;s/^/\/dev\//')"
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echo "$partitions" | while read -r partition; do
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case "$(kpartx -l "$partition" 2>/dev/null | wc -l)" in
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2)
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echo "Mount subpartitions of $partition"
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kpartx -afs "$partition"
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# Ensure that this was the *correct* subpartition
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# Some devices have mmc partitions that appear to have
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# subpartitions, but aren't our subpartition.
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if blkid | grep -q "pmOS_boot"; then
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break
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fi
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kpartx -d "$partition"
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continue
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;;
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*)
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continue
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;;
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esac
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done
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attempt_count=$(( attempt_count + 1 ));
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if [ "$attempt_count" -gt "100" ]; then
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echo "ERROR: failed to mount subpartitions!"
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return;
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fi
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sleep 0.1;
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done
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}
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find_root_partition() {
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# The partition layout is one of the following:
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# a) boot, root partitions on sdcard
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# b) boot, root partition on the "system" partition (which has its
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# own partition header! so we have partitions on partitions!)
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#
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# mount_subpartitions() must get executed before calling
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# find_root_partition(), so partitions from b) also get found.
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# Try partitions in /dev/mapper and /dev/dm-* first
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for id in pmOS_root crypto_LUKS; do
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for path in /dev/mapper /dev/dm; do
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DEVICE="$(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 "$(find_root_partition)" ]; do
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show_splash /splash-norootfs.ppm.gz
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echo "Could not find the rootfs."
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echo "Maybe you need to insert the sdcard, if your device has"
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echo "any? Trying again in one second..."
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sleep 1
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done
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}
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resize_root_partition() {
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partition=$(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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# Resize the root partition (non-subpartitions). Usually we do not want this,
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# except for QEMU devices (where PMOS_FORCE_PARTITION_RESIZE gets passed as
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# kernel parameter).
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if grep -q PMOS_FORCE_PARTITION_RESIZE /proc/cmdline; then
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echo "Resize root partition ($partition)"
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parted -s "$(echo "$partition" | sed -E 's/p?2$//')" 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 "$_marker"
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echo "Setup usb network"
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# Run all usb network setup functions (add more below!)
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setup_usb_network_android
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setup_usb_network_configfs
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}
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start_udhcpd() {
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# Only run once
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[ -e /etc/udhcpd.conf ] && return
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# Skip if disabled
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# shellcheck disable=SC2154
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if [ "$deviceinfo_disable_dhcpd" = "true" ]; then
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echo "NOTE: start of dhcpd is disabled (deviceinfo_disable_dhcpd)"
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touch /etc/udhcpcd.conf
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return
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fi
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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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if [ -z $INTERFACE ]; then
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ifconfig eth0 "$IP" && INTERFACE=eth0
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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 $INTERFACE"
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echo "option subnet 255.255.255.0"
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} >/etc/udhcpd.conf
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echo "Start the dhcpcd daemon (forks into background)"
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udhcpd
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}
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setup_directfb_tslib(){
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# Set up directfb and tslib
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# Note: linux_input module is disabled since it will try to take over
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# the touchscreen device from tslib (e.g. on the N900)
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export DFBARGS="system=fbdev,no-cursor,disable-module=linux_input"
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# shellcheck disable=SC2154
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if [ ! -z "$deviceinfo_dev_touchscreen" ]; then
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export TSLIB_TSDEVICE="$deviceinfo_dev_touchscreen"
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fi
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}
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start_onscreen_keyboard(){
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setup_directfb_tslib
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osk-sdl -n root -d "$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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start_charging_mode(){
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# Check cmdline for charging mode
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chargingmodes="
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androidboot.mode=charger
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lpm_boot=1
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androidboot.huawei_type=oem_rtc
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startup=0x00010004
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lpcharge=1
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androidboot.bootchg=true
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"
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# shellcheck disable=SC2086
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grep -Eq "$(echo $chargingmodes | tr ' ' '|')" /proc/cmdline || return
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setup_directfb_tslib
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# Get the font from osk-sdl config
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fontpath=$(awk '/^keyboard-font/{print $3}' /etc/osk.conf)
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# Set up triggerhappy config
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{
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echo "KEY_POWER 1 pgrep -x charging-sdl || charging-sdl -pcf $fontpath"
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} >/etc/triggerhappy.conf
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# Start it once and then start triggerhappy
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(
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charging-sdl -pcf "$fontpath" \
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|| show_splash /splash-charging-error.ppm.gz
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) &
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thd --deviceglob /dev/input/event* --triggers /etc/triggerhappy.conf
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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 "$1" >/tmp/splash.ppm
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fbsplash -s /tmp/splash.ppm
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}
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set_framebuffer_mode() {
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[ -e "/sys/class/graphics/fb0/modes" ] || return
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[ -z "$(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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setup_framebuffer() {
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# Skip for non-framebuffer devices
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# shellcheck disable=SC2154
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if [ "$deviceinfo_no_framebuffer" = "true" ]; then
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echo "NOTE: Skipping framebuffer setup (deviecinfo_no_framebuffer)"
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return
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fi
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# Wait for /dev/fb0
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echo "NOTE: Waiting 10 seconds for the framebuffer /dev/fb0."
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echo "If your device does not have a framebuffer, disable this with:"
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echo "no_framebuffer=true in <https://postmarketos.org/deviceinfo>"
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for _ in $(seq 1 100); do
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[ -e "/dev/fb0" ] && break
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sleep 0.1
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done
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if ! [ -e "/dev/fb0" ]; then
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echo "ERROR: /dev/fb0 did not appear!"
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return
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fi
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set_framebuffer_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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