mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-22 16:07:39 +00:00
607 lines
16 KiB
Bash
607 lines
16 KiB
Bash
#########################################
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#
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# Magisk General Utility Functions
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# by topjohnwu
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#
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#########################################
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#MAGISK_VERSION_STUB
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###################
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# Helper Functions
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###################
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ui_print() {
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$BOOTMODE && echo "$1" || echo -e "ui_print $1\nui_print" >> /proc/self/fd/$OUTFD
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}
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toupper() {
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echo "$@" | tr '[:lower:]' '[:upper:]'
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}
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grep_cmdline() {
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local REGEX="s/^$1=//p"
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cat /proc/cmdline | tr '[:space:]' '\n' | sed -n "$REGEX" 2>/dev/null
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}
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grep_prop() {
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local REGEX="s/^$1=//p"
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shift
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local FILES=$@
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[ -z "$FILES" ] && FILES='/system/build.prop'
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sed -n "$REGEX" $FILES 2>/dev/null | head -n 1
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}
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getvar() {
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local VARNAME=$1
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local VALUE=
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VALUE=`grep_prop $VARNAME /sbin/.magisk/config /data/.magisk /cache/.magisk`
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[ ! -z $VALUE ] && eval $VARNAME=\$VALUE
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}
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is_mounted() {
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grep -q " `readlink -f $1` " /proc/mounts 2>/dev/null
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return $?
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}
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abort() {
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ui_print "$1"
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$BOOTMODE || recovery_cleanup
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exit 1
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}
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resolve_vars() {
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MAGISKBIN=$NVBASE/magisk
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POSTFSDATAD=$NVBASE/post-fs-data.d
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SERVICED=$NVBASE/service.d
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}
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print_title() {
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local len=$(echo -n $1 | wc -c)
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len=$((len + 2))
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local pounds=$(printf "%${len}s" | tr ' ' '*')
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ui_print "$pounds"
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ui_print " $1 "
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ui_print "$pounds"
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}
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######################
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# Environment Related
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######################
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setup_flashable() {
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ensure_bb
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$BOOTMODE && return
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if [ -z $OUTFD ] || readlink /proc/$$/fd/$OUTFD | grep -q /tmp; then
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# We will have to manually find out OUTFD
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for FD in `ls /proc/$$/fd`; do
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if readlink /proc/$$/fd/$FD | grep -q pipe; then
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if ps | grep -v grep | grep -qE " 3 $FD |status_fd=$FD"; then
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OUTFD=$FD
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break
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fi
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fi
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done
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fi
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}
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ensure_bb() {
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[ -o standalone ] && return
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set -o standalone 2>/dev/null && return
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# At this point, we are not running in BusyBox ash
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# Find our busybox binary
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local BUSYBOX
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if [ -f $TMPDIR/busybox ]; then
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BUSYBOX=$TMPDIR/busybox
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elif [ -f $MAGISKBIN/busybox ]; then
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BUSYBOX=$MAGISKBIN/busybox
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else
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abort "! Cannot find BusyBox"
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fi
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# Re-exec our script
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chmod 755 $BUSYBOX
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exec $BUSYBOX sh -o standalone $0 "$@"
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}
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recovery_actions() {
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# Make sure random won't get blocked
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mount -o bind /dev/urandom /dev/random
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# Unset library paths
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OLD_LD_LIB=$LD_LIBRARY_PATH
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OLD_LD_PRE=$LD_PRELOAD
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OLD_LD_CFG=$LD_CONFIG_FILE
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unset LD_LIBRARY_PATH
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unset LD_PRELOAD
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unset LD_CONFIG_FILE
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}
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recovery_cleanup() {
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local DIR
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ui_print "- Unmounting partitions"
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(umount_apex
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if [ ! -d /postinstall/tmp ]; then
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umount -l /system
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umount -l /system_root
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fi
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umount -l /vendor
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umount -l /persist
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for DIR in /apex /system /system_root; do
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if [ -L "${DIR}_link" ]; then
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rmdir $DIR
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mv -f ${DIR}_link $DIR
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fi
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done
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umount -l /dev/random) 2>/dev/null
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export PATH=$OLD_PATH
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[ -z $OLD_LD_LIB ] || export LD_LIBRARY_PATH=$OLD_LD_LIB
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[ -z $OLD_LD_PRE ] || export LD_PRELOAD=$OLD_LD_PRE
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[ -z $OLD_LD_CFG ] || export LD_CONFIG_FILE=$OLD_LD_CFG
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}
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#######################
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# Installation Related
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#######################
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# find_block [partname...]
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find_block() {
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for BLOCK in "$@"; do
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DEVICE=`find /dev/block -type l -iname $BLOCK | head -n 1` 2>/dev/null
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if [ ! -z $DEVICE ]; then
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readlink -f $DEVICE
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return 0
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fi
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done
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# Fallback by parsing sysfs uevents
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for uevent in /sys/dev/block/*/uevent; do
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local DEVNAME=`grep_prop DEVNAME $uevent`
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local PARTNAME=`grep_prop PARTNAME $uevent`
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for BLOCK in "$@"; do
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if [ "`toupper $BLOCK`" = "`toupper $PARTNAME`" ]; then
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echo /dev/block/$DEVNAME
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return 0
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fi
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done
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done
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return 1
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}
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# setup_mntpoint <mountpoint>
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setup_mntpoint() {
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local POINT=$1
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[ -L $POINT ] && mv -f $POINT ${POINT}_link
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if [ ! -d $POINT ]; then
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rm -f $POINT
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mkdir -p $POINT
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fi
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}
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# mount_name <partname(s)> <mountpoint> <flag>
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mount_name() {
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local PART=$1
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local POINT=$2
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local FLAG=$3
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setup_mntpoint $POINT
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is_mounted $POINT && return
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ui_print "- Mounting $POINT"
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# First try mounting with fstab
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mount $FLAG $POINT 2>/dev/null
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if ! is_mounted $POINT; then
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local BLOCK=`find_block $PART`
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mount $FLAG $BLOCK $POINT
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fi
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}
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# mount_ro_ensure <partname(s)> <mountpoint>
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mount_ro_ensure() {
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# We handle ro partitions only in recovery
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$BOOTMODE && return
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local PART=$1
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local POINT=$2
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mount_name "$PART" $POINT '-o ro'
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is_mounted $POINT || abort "! Cannot mount $POINT"
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}
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mount_partitions() {
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# Check A/B slot
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SLOT=`grep_cmdline androidboot.slot_suffix`
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if [ -z $SLOT ]; then
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SLOT=`grep_cmdline androidboot.slot`
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[ -z $SLOT ] || SLOT=_${SLOT}
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fi
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[ -z $SLOT ] || ui_print "- Current boot slot: $SLOT"
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# Mount ro partitions
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mount_ro_ensure "system$SLOT app$SLOT" /system
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if [ -f /system/init.rc ]; then
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SYSTEM_ROOT=true
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setup_mntpoint /system_root
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mount --move /system /system_root
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mount -o bind /system_root/system /system
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else
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grep ' / ' /proc/mounts | grep -qv 'rootfs' || grep -q ' /system_root ' /proc/mounts \
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&& SYSTEM_ROOT=true || SYSTEM_ROOT=false
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fi
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[ -L /system/vendor ] && mount_ro_ensure vendor$SLOT /vendor
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$SYSTEM_ROOT && ui_print "- Device is system-as-root"
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# Allow /system/bin commands (dalvikvm) on Android 10+ in recovery
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$BOOTMODE || mount_apex
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# Mount persist partition in recovery
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if ! $BOOTMODE && [ ! -z $PERSISTDIR ]; then
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# Try to mount persist
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PERSISTDIR=/persist
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mount_name persist /persist
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if ! is_mounted /persist; then
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# Fallback to cache
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mount_name "cache cac" /cache
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is_mounted /cache && PERSISTDIR=/cache || PERSISTDIR=
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fi
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fi
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}
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# loop_setup <ext4_img>, sets LOOPDEV
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loop_setup() {
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unset LOOPDEV
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local LOOP
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local MINORX=1
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[ -e /dev/block/loop1 ] && MINORX=$(stat -Lc '%T' /dev/block/loop1)
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local NUM=0
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while [ $NUM -lt 64 ]; do
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LOOP=/dev/block/loop$NUM
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[ -e $LOOP ] || mknod $LOOP b 7 $((NUM * MINORX))
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if losetup $LOOP "$1" 2>/dev/null; then
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LOOPDEV=$LOOP
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break
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fi
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NUM=$((NUM + 1))
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done
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}
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mount_apex() {
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$BOOTMODE || [ ! -d /system/apex ] && return
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local APEX DEST
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setup_mntpoint /apex
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for APEX in /system/apex/*; do
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DEST=/apex/$(basename $APEX .apex)
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[ "$DEST" == /apex/com.android.runtime.release ] && DEST=/apex/com.android.runtime
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mkdir -p $DEST 2>/dev/null
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if [ -f $APEX ]; then
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# APEX APKs, extract and loop mount
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unzip -qo $APEX apex_payload.img -d /apex
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loop_setup apex_payload.img
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if [ ! -z $LOOPDEV ]; then
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ui_print "- Mounting $DEST"
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mount -t ext4 -o ro,noatime $LOOPDEV $DEST
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fi
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rm -f apex_payload.img
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elif [ -d $APEX ]; then
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# APEX folders, bind mount directory
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ui_print "- Mounting $DEST"
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mount -o bind $APEX $DEST
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fi
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done
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export ANDROID_RUNTIME_ROOT=/apex/com.android.runtime
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export ANDROID_TZDATA_ROOT=/apex/com.android.tzdata
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local APEXRJPATH=/apex/com.android.runtime/javalib
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local SYSFRAME=/system/framework
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export BOOTCLASSPATH=\
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$APEXRJPATH/core-oj.jar:$APEXRJPATH/core-libart.jar:$APEXRJPATH/okhttp.jar:\
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$APEXRJPATH/bouncycastle.jar:$APEXRJPATH/apache-xml.jar:$SYSFRAME/framework.jar:\
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$SYSFRAME/ext.jar:$SYSFRAME/telephony-common.jar:$SYSFRAME/voip-common.jar:\
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$SYSFRAME/ims-common.jar:$SYSFRAME/android.test.base.jar:$SYSFRAME/telephony-ext.jar:\
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/apex/com.android.conscrypt/javalib/conscrypt.jar:\
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/apex/com.android.media/javalib/updatable-media.jar
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}
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umount_apex() {
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[ -d /apex ] || return
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local DEST SRC
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for DEST in /apex/*; do
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[ "$DEST" = '/apex/*' ] && break
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SRC=$(grep $DEST /proc/mounts | awk '{ print $1 }')
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umount -l $DEST
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# Detach loop device just in case
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losetup -d $SRC 2>/dev/null
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done
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rm -rf /apex
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unset ANDROID_RUNTIME_ROOT
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unset ANDROID_TZDATA_ROOT
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unset BOOTCLASSPATH
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}
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get_flags() {
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# override variables
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getvar KEEPVERITY
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getvar KEEPFORCEENCRYPT
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getvar RECOVERYMODE
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if [ -z $KEEPVERITY ]; then
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if $SYSTEM_ROOT; then
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KEEPVERITY=true
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ui_print "- System-as-root, keep dm/avb-verity"
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else
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KEEPVERITY=false
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fi
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fi
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if [ -z $KEEPFORCEENCRYPT ]; then
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grep ' /data ' /proc/mounts | grep -q 'dm-' && FDE=true || FDE=false
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[ -d /data/unencrypted ] && FBE=true || FBE=false
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# No data access means unable to decrypt in recovery
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if $FDE || $FBE || ! $DATA; then
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KEEPFORCEENCRYPT=true
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ui_print "- Encrypted data, keep forceencrypt"
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else
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KEEPFORCEENCRYPT=false
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fi
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fi
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[ -z $RECOVERYMODE ] && RECOVERYMODE=false
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}
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find_boot_image() {
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BOOTIMAGE=
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if $RECOVERYMODE; then
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BOOTIMAGE=`find_block recovery_ramdisk$SLOT recovery sos`
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elif [ ! -z $SLOT ]; then
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BOOTIMAGE=`find_block ramdisk$SLOT recovery_ramdisk$SLOT boot$SLOT`
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else
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BOOTIMAGE=`find_block ramdisk recovery_ramdisk kern-a android_boot kernel boot lnx bootimg boot_a`
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fi
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if [ -z $BOOTIMAGE ]; then
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# Lets see what fstabs tells me
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BOOTIMAGE=`grep -v '#' /etc/*fstab* | grep -E '/boot[^a-zA-Z]' | grep -oE '/dev/[a-zA-Z0-9_./-]*' | head -n 1`
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fi
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}
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flash_image() {
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# Make sure all blocks are writable
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$MAGISKBIN/magisk --unlock-blocks 2>/dev/null
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case "$1" in
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*.gz) CMD1="$MAGISKBIN/magiskboot decompress '$1' - 2>/dev/null";;
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*) CMD1="cat '$1'";;
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esac
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if $BOOTSIGNED; then
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CMD2="$BOOTSIGNER -sign"
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ui_print "- Sign image with verity keys"
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else
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CMD2="cat -"
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fi
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if [ -b "$2" ]; then
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local img_sz=`stat -c '%s' "$1"`
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local blk_sz=`blockdev --getsize64 "$2"`
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[ $img_sz -gt $blk_sz ] && return 1
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eval $CMD1 | eval $CMD2 | cat - /dev/zero > "$2" 2>/dev/null
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else
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ui_print "- Not block device, storing image"
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eval $CMD1 | eval $CMD2 > "$2" 2>/dev/null
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fi
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return 0
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}
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patch_dtb_partitions() {
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local result=1
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cd $MAGISKBIN
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for name in dtb dtbo; do
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local IMAGE=`find_block $name$SLOT`
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if [ ! -z $IMAGE ]; then
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ui_print "- $name image: $IMAGE"
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if ./magiskboot dtb $IMAGE patch dt.patched; then
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result=0
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ui_print "- Backing up stock $name image"
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cat $IMAGE > stock_${name}.img
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ui_print "- Flashing patched $name"
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cat dt.patched /dev/zero > $IMAGE
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rm -f dt.patched
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fi
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fi
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done
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cd /
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return $result
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}
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# Common installation script for flash_script.sh and addon.d.sh
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install_magisk() {
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cd $MAGISKBIN
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eval $BOOTSIGNER -verify < $BOOTIMAGE && BOOTSIGNED=true
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$BOOTSIGNED && ui_print "- Boot image is signed with AVB 1.0"
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$IS64BIT && mv -f magiskinit64 magiskinit 2>/dev/null || rm -f magiskinit64
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# Source the boot patcher
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SOURCEDMODE=true
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. ./boot_patch.sh "$BOOTIMAGE"
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ui_print "- Flashing new boot image"
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if ! flash_image new-boot.img "$BOOTIMAGE"; then
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ui_print "- Compressing ramdisk to fit in partition"
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./magiskboot cpio ramdisk.cpio compress
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./magiskboot repack "$BOOTIMAGE"
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flash_image new-boot.img "$BOOTIMAGE" || abort "! Insufficient partition size"
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fi
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./magiskboot cleanup
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rm -f new-boot.img
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patch_dtb_partitions
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run_migrations
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}
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sign_chromeos() {
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ui_print "- Signing ChromeOS boot image"
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echo > empty
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./chromeos/futility vbutil_kernel --pack new-boot.img.signed \
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--keyblock ./chromeos/kernel.keyblock --signprivate ./chromeos/kernel_data_key.vbprivk \
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--version 1 --vmlinuz new-boot.img --config empty --arch arm --bootloader empty --flags 0x1
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rm -f empty new-boot.img
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mv new-boot.img.signed new-boot.img
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}
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remove_system_su() {
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if [ -f /system/bin/su -o -f /system/xbin/su ] && [ ! -f /su/bin/su ]; then
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ui_print "- Removing system installed root"
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mount -o rw,remount /system
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# SuperSU
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if [ -e /system/bin/.ext/.su ]; then
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mv -f /system/bin/app_process32_original /system/bin/app_process32 2>/dev/null
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mv -f /system/bin/app_process64_original /system/bin/app_process64 2>/dev/null
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mv -f /system/bin/install-recovery_original.sh /system/bin/install-recovery.sh 2>/dev/null
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cd /system/bin
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if [ -e app_process64 ]; then
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ln -sf app_process64 app_process
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elif [ -e app_process32 ]; then
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ln -sf app_process32 app_process
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fi
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fi
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rm -rf /system/.pin /system/bin/.ext /system/etc/.installed_su_daemon /system/etc/.has_su_daemon \
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/system/xbin/daemonsu /system/xbin/su /system/xbin/sugote /system/xbin/sugote-mksh /system/xbin/supolicy \
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/system/bin/app_process_init /system/bin/su /cache/su /system/lib/libsupol.so /system/lib64/libsupol.so \
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/system/su.d /system/etc/install-recovery.sh /system/etc/init.d/99SuperSUDaemon /cache/install-recovery.sh \
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/system/.supersu /cache/.supersu /data/.supersu \
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/system/app/Superuser.apk /system/app/SuperSU /cache/Superuser.apk
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elif [ -f /cache/su.img -o -f /data/su.img -o -d /data/adb/su -o -d /data/su ]; then
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ui_print "- Removing systemless installed root"
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umount -l /su 2>/dev/null
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rm -rf /cache/su.img /data/su.img /data/adb/su /data/adb/suhide /data/su /cache/.supersu /data/.supersu \
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/cache/supersu_install /data/supersu_install
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fi
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}
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api_level_arch_detect() {
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API=`grep_prop ro.build.version.sdk`
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ABI=`grep_prop ro.product.cpu.abi | cut -c-3`
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ABI2=`grep_prop ro.product.cpu.abi2 | cut -c-3`
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ABILONG=`grep_prop ro.product.cpu.abi`
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ARCH=arm
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ARCH32=arm
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IS64BIT=false
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if [ "$ABI" = "x86" ]; then ARCH=x86; ARCH32=x86; fi;
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if [ "$ABI2" = "x86" ]; then ARCH=x86; ARCH32=x86; fi;
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if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; ARCH32=arm; IS64BIT=true; fi;
|
|
if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; ARCH32=x86; IS64BIT=true; fi;
|
|
}
|
|
|
|
check_data() {
|
|
DATA=false
|
|
DATA_DE=false
|
|
if grep ' /data ' /proc/mounts | grep -vq 'tmpfs'; then
|
|
# Test if data is writable
|
|
touch /data/.rw && rm /data/.rw && DATA=true
|
|
# Test if DE storage is writable
|
|
$DATA && [ -d /data/adb ] && touch /data/adb/.rw && rm /data/adb/.rw && DATA_DE=true
|
|
fi
|
|
$DATA && NVBASE=/data || NVBASE=/cache/data_adb
|
|
$DATA_DE && NVBASE=/data/adb
|
|
resolve_vars
|
|
}
|
|
|
|
find_manager_apk() {
|
|
[ -z $APK ] && APK=/data/adb/magisk.apk
|
|
[ -f $APK ] || APK=/data/magisk/magisk.apk
|
|
[ -f $APK ] || APK=/data/app/com.topjohnwu.magisk*/*.apk
|
|
if [ ! -f $APK ]; then
|
|
DBAPK=`magisk --sqlite "SELECT value FROM strings WHERE key='requester'" 2>/dev/null | cut -d= -f2`
|
|
[ -z $DBAPK ] && DBAPK=`strings /data/adb/magisk.db | grep 5requester | cut -c11-`
|
|
[ -z $DBAPK ] || APK=/data/user_de/*/$DBAPK/dyn/*.apk
|
|
[ -f $APK ] || [ -z $DBAPK ] || APK=/data/app/$DBAPK*/*.apk
|
|
fi
|
|
[ -f $APK ] || ui_print "! Unable to detect Magisk Manager APK for BootSigner"
|
|
}
|
|
|
|
run_migrations() {
|
|
local LOCSHA1
|
|
local TARGET
|
|
# Legacy app installation
|
|
local BACKUP=/data/adb/magisk/stock_boot*.gz
|
|
if [ -f $BACKUP ]; then
|
|
cp $BACKUP /data
|
|
rm -f $BACKUP
|
|
fi
|
|
|
|
# Legacy backup
|
|
for gz in /data/stock_boot*.gz; do
|
|
[ -f $gz ] || break
|
|
LOCSHA1=`basename $gz | sed -e 's/stock_boot_//' -e 's/.img.gz//'`
|
|
[ -z $LOCSHA1 ] && break
|
|
mkdir /data/magisk_backup_${LOCSHA1} 2>/dev/null
|
|
mv $gz /data/magisk_backup_${LOCSHA1}/boot.img.gz
|
|
done
|
|
|
|
# Stock backups
|
|
LOCSHA1=$SHA1
|
|
for name in boot dtb dtbo; do
|
|
BACKUP=/data/adb/magisk/stock_${name}.img
|
|
[ -f $BACKUP ] || continue
|
|
if [ $name = 'boot' ]; then
|
|
LOCSHA1=`$MAGISKBIN/magiskboot sha1 $BACKUP`
|
|
mkdir /data/magisk_backup_${LOCSHA1} 2>/dev/null
|
|
fi
|
|
TARGET=/data/magisk_backup_${LOCSHA1}/${name}.img
|
|
cp $BACKUP $TARGET
|
|
rm -f $BACKUP
|
|
gzip -9f $TARGET
|
|
done
|
|
}
|
|
|
|
#################
|
|
# Module Related
|
|
#################
|
|
|
|
set_perm() {
|
|
chown $2:$3 $1 || return 1
|
|
chmod $4 $1 || return 1
|
|
CON=$5
|
|
[ -z $CON ] && CON=u:object_r:system_file:s0
|
|
chcon $CON $1 || return 1
|
|
}
|
|
|
|
set_perm_recursive() {
|
|
find $1 -type d 2>/dev/null | while read dir; do
|
|
set_perm $dir $2 $3 $4 $6
|
|
done
|
|
find $1 -type f -o -type l 2>/dev/null | while read file; do
|
|
set_perm $file $2 $3 $5 $6
|
|
done
|
|
}
|
|
|
|
mktouch() {
|
|
mkdir -p ${1%/*} 2>/dev/null
|
|
[ -z $2 ] && touch $1 || echo $2 > $1
|
|
chmod 644 $1
|
|
}
|
|
|
|
request_size_check() {
|
|
reqSizeM=`du -ms "$1" | cut -f1`
|
|
}
|
|
|
|
request_zip_size_check() {
|
|
reqSizeM=`unzip -l "$1" | tail -n 1 | awk '{ print int(($1 - 1) / 1048576 + 1) }'`
|
|
}
|
|
|
|
boot_actions() { return; }
|
|
|
|
##########
|
|
# Presets
|
|
##########
|
|
|
|
# Detect whether in boot mode
|
|
[ -z $BOOTMODE ] && ps | grep zygote | grep -qv grep && BOOTMODE=true
|
|
[ -z $BOOTMODE ] && ps -A 2>/dev/null | grep zygote | grep -qv grep && BOOTMODE=true
|
|
[ -z $BOOTMODE ] && BOOTMODE=false
|
|
|
|
MAGISKTMP=/sbin/.magisk
|
|
NVBASE=/data/adb
|
|
[ -z $TMPDIR ] && TMPDIR=/dev/tmp
|
|
|
|
# Bootsigner related stuff
|
|
BOOTSIGNERCLASS=a.a
|
|
BOOTSIGNER="/system/bin/dalvikvm -Xnoimage-dex2oat -cp \$APK \$BOOTSIGNERCLASS"
|
|
BOOTSIGNED=false
|
|
|
|
resolve_vars
|