Magisk/scripts/magisk_uninstaller.sh

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#MAGISK
############################################
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#
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# Magisk Uninstaller
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# by topjohnwu
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#
############################################
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##############
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# Preparation
##############
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# This path should work in any cases
TMPDIR=/dev/tmp
INSTALLER=$TMPDIR/install
CHROMEDIR=$INSTALLER/chromeos
PERSISTDIR=/sbin/.magisk/mirror/persist
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# Default permissions
umask 022
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OUTFD=$2
ZIP=$3
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if [ ! -f $INSTALLER/util_functions.sh ]; then
echo "! Unable to extract zip file!"
exit 1
fi
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# Load utility functions
. $INSTALLER/util_functions.sh
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setup_flashable
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print_title "Magisk Uninstaller"
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is_mounted /data || mount /data || abort "! Unable to mount /data, please uninstall with Magisk Manager"
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is_mounted /cache || mount /cache 2>/dev/null
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mount_partitions
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api_level_arch_detect
ui_print "- Device platform: $ARCH"
MAGISKBIN=$INSTALLER/$ARCH32
mv $CHROMEDIR $MAGISKBIN
chmod -R 755 $MAGISKBIN
check_data
$DATA_DE || abort "! Cannot access /data, please uninstall with Magisk Manager"
$BOOTMODE || recovery_actions
run_migrations
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############
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# Uninstall
############
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get_flags
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find_boot_image
[ -e $BOOTIMAGE ] || abort "! Unable to detect boot image"
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ui_print "- Found target image: $BOOTIMAGE"
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[ -z $DTBOIMAGE ] || ui_print "- Found dtbo image: $DTBOIMAGE"
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cd $MAGISKBIN
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CHROMEOS=false
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ui_print "- Unpacking boot image"
# Dump image for MTD/NAND character device boot partitions
if [ -c $BOOTIMAGE ]; then
nanddump -f boot.img $BOOTIMAGE
BOOTNAND=$BOOTIMAGE
BOOTIMAGE=boot.img
fi
./magiskboot unpack "$BOOTIMAGE"
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case $? in
1 )
abort "! Unsupported/Unknown image format"
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;;
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2 )
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ui_print "- ChromeOS boot image detected"
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CHROMEOS=true
;;
esac
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# Restore the original boot partition path
[ "$BOOTNAND" ] && BOOTIMAGE=$BOOTNAND
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# Detect boot image state
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ui_print "- Checking ramdisk status"
if [ -e ramdisk.cpio ]; then
./magiskboot cpio ramdisk.cpio test
STATUS=$?
else
# Stock A only system-as-root
STATUS=0
fi
case $((STATUS & 3)) in
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0 ) # Stock boot
ui_print "- Stock boot image detected"
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;;
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1 ) # Magisk patched
ui_print "- Magisk patched image detected"
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# Find SHA1 of stock boot image
SHA1=`./magiskboot cpio ramdisk.cpio sha1 2>/dev/null`
BACKUPDIR=/data/magisk_backup_$SHA1
if [ -d $BACKUPDIR ]; then
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ui_print "- Restoring stock boot image"
flash_image $BACKUPDIR/boot.img.gz $BOOTIMAGE
for name in dtb dtbo dtbs; do
[ -f $BACKUPDIR/${name}.img.gz ] || continue
IMAGE=`find_block $name$SLOT`
[ -z $IMAGE ] && continue
ui_print "- Restoring stock $name image"
flash_image $BACKUPDIR/${name}.img.gz $IMAGE
done
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else
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ui_print "! Boot image backup unavailable"
ui_print "- Restoring ramdisk with internal backup"
./magiskboot cpio ramdisk.cpio restore
if ! ./magiskboot cpio ramdisk.cpio "exists init.rc"; then
# A only system-as-root
rm -f ramdisk.cpio
fi
./magiskboot repack $BOOTIMAGE
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# Sign chromeos boot
$CHROMEOS && sign_chromeos
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ui_print "- Flashing restored boot image"
flash_image new-boot.img $BOOTIMAGE || abort "! Insufficient partition size"
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fi
;;
2 ) # Unsupported
ui_print "! Boot image patched by unsupported programs"
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abort "! Cannot uninstall"
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;;
esac
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ui_print "- Removing Magisk files"
rm -rf \
/cache/*magisk* /cache/unblock /data/*magisk* /data/cache/*magisk* /data/property/*magisk* \
/data/Magisk.apk /data/busybox /data/custom_ramdisk_patch.sh /data/adb/*magisk* \
/data/adb/post-fs-data.d /data/adb/service.d /data/adb/modules* $PERSISTDIR/magisk 2>/dev/null
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if [ -f /system/addon.d/99-magisk.sh ]; then
blockdev --setrw /dev/block/mapper/system$SLOT 2>/dev/null
mount -o rw,remount /system || mount -o rw,remount /
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rm -f /system/addon.d/99-magisk.sh
fi
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cd /
if $BOOTMODE; then
ui_print "********************************************"
ui_print " Magisk Manager will uninstall itself, and"
ui_print " the device will reboot after a few seconds"
ui_print "********************************************"
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(sleep 8; /system/bin/reboot)&
else
rm -rf /data/user*/*/*magisk* /data/app/*magisk*
recovery_cleanup
ui_print "- Done"
fi
rm -rf $TMPDIR
exit 0