112 lines
3.2 KiB
Bash
Executable file
112 lines
3.2 KiB
Bash
Executable file
#!/bin/sh
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# Copyright 2017 Attila Szollosi
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#
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# This file is part of postmarketos-android-recovery-installer.
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#
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# postmarketos-android-recovery-installer is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# postmarketos-android-recovery-installer is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with postmarketos-android-recovery-installer. If not, see <http://www.gnu.org/licenses/>.
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export PATH="/bin"
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export LD_LIBRARY_PATH="/lib"
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# shellcheck source=/dev/null
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. /install_options
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# taken from https://github.com/Debuffer-XDA/Gov-Tuner/blob/master/META-INF/com/google/android/update-binary
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# Copyright (c) 2016 - 2017 Debuffer
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ui_print() {
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echo "ui_print $1" > /proc/self/fd/"$OUTFD"
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echo "ui_print" > /proc/self/fd/"$OUTFD"
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}
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# $1: fstab filename
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# $2: partition
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get_fstab_device() {
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src_column=$(awk '{for (i=1; i<=NF; ++i) { if ($i ~ /^\/dev/) {print i; exit;} }}' /"$1")
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[ -z "$src_column" ] && src_column=3
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# Warning: partition name is not escaped
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awk -v src="$src_column" \
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'!/^#/ && /(^|\s*)\/'"$2"'/ {print $src; exit;}' /"$1"
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}
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extract_partition_table() {
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fstab_recovery="recovery.fstab"
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# TWRP can use twrp.fstab instead of recovery.fstab (device specific)
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# This check exists to support both formats.
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if [ ! -e "/"$fstab_recovery ]; then
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fstab_recovery="twrp.fstab"
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fi
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dev=$(findfs PARTLABEL="$SYSTEM_PARTLABEL") || \
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# We need to resolve symlinks, to make set_subpartitions() work.
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dev=$(readlink -fn "$(get_fstab_device "$fstab_recovery" "$INSTALL_PARTITION")")
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if [ -n "$dev" ]
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then
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echo "install device found at $dev"
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export INSTALL_DEVICE=$dev
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else
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echo "Couldn't find $INSTALL_PARTITION partition."
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return 1
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fi
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if [ "$ISOREC" = "true" ]
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then
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export KERNEL_PARTITION
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KERNEL_PARTITION=$(findfs PARTLABEL="$KERNEL_PARTLABEL")
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export INITFS_PARTITION
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INITFS_PARTITION=$(findfs PARTLABEL="$INITFS_PARTLABEL")
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else
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dev=$(findfs PARTLABEL="boot") || \
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dev=$(readlink -fn "$(get_fstab_device "$fstab_recovery" boot)")
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if [ -n "$dev" ]
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then
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echo "boot partition found at $dev"
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export BOOT_PARTITION=$dev
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else
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echo "Couldn't find boot partition."
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return 1
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fi
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fi
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}
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partition_install_device() {
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for command in "mktable msdos" \
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"mkpart primary ext2 2048s 100M" \
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"mkpart primary 100M 100%" \
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"set 1 boot on"
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do
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parted -s "$INSTALL_DEVICE" "$command"
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done
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partprobe
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if [ "$INSTALL_PARTITION" != "external_sd" ]
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then
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kpartx -afs "$INSTALL_DEVICE"
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fi
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set_subpartitions
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}
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set_subpartitions() {
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export PMOS_BOOT
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PMOS_BOOT=/dev/mapper/"$(basename "$INSTALL_DEVICE")"p1
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export ROOT_PARTITION
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ROOT_PARTITION=/dev/mapper/"$(basename "$INSTALL_DEVICE")"p2
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}
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umount_install_partition() {
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if [ -n "$(awk '$1 == install_part' install_part="$INSTALL_DEVICE" /proc/mounts)" ]
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then
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umount "$INSTALL_DEVICE"
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else
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echo "$INSTALL_DEVICE is not mounted, continuing..."
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fi
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}
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