mirror of
https://github.com/topjohnwu/Magisk
synced 2024-11-13 20:54:12 +01:00
523 lines
16 KiB
Bash
523 lines
16 KiB
Bash
#!/sbin/sh
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##########################################################################################
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#
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# Magisk Boot Image Patcher
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# by topjohnwu
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#
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# This zip will patch your boot image with Magisk support
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#
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##########################################################################################
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MAGISK=true
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# Detect whether in boot mode
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ps | grep zygote | grep -v grep >/dev/null && BOOTMODE=true || BOOTMODE=false
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# This path should work in any cases
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TMPDIR=/dev/tmp
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INSTALLER=$TMPDIR/magisk
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COMMONDIR=$INSTALLER/common
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BOOTTMP=$TMPDIR/boottmp
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COREDIR=/magisk/.core
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CHROMEDIR=$INSTALLER/chromeos
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# Default permissions
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umask 022
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##########################################################################################
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# Flashable update-binary preparation
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##########################################################################################
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OUTFD=$2
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ZIP=$3
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readlink /proc/$$/fd/$OUTFD 2>/dev/null | grep /tmp >/dev/null
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if [ "$?" -eq "0" ]; then
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OUTFD=0
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for FD in `ls /proc/$$/fd`; do
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readlink /proc/$$/fd/$FD 2>/dev/null | grep pipe >/dev/null
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if [ "$?" -eq "0" ]; then
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ps | grep " 3 $FD " | grep -v grep >/dev/null
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if [ "$?" -eq "0" ]; 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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mkdir -p $INSTALLER
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cd $INSTALLER
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unzip -o "$ZIP"
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##########################################################################################
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# Functions
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##########################################################################################
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ui_print() {
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if $BOOTMODE; then
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echo "$1"
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else
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echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
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echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
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fi
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}
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getvar() {
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local VARNAME=$1
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local VALUE=$(eval echo \$"$VARNAME");
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for FILE in /dev/.magisk /data/.magisk /cache/.magisk /system/.magisk; do
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if [ -z "$VALUE" ]; then
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LINE=$(cat $FILE 2>/dev/null | grep "$VARNAME=")
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if [ ! -z "$LINE" ]; then
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VALUE=${LINE#*=}
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fi
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fi
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done
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eval $VARNAME=\$VALUE
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}
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find_boot_image() {
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if [ -z "$BOOTIMAGE" ]; then
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for PARTITION in kern-a KERN-A android_boot ANDROID_BOOT kernel KERNEL boot BOOT lnx LNX; do
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BOOTIMAGE=`readlink /dev/block/by-name/$PARTITION || readlink /dev/block/platform/*/by-name/$PARTITION || readlink /dev/block/platform/*/*/by-name/$PARTITION`
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if [ ! -z "$BOOTIMAGE" ]; then break; fi
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done
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fi
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if [ -z "$BOOTIMAGE" ]; then
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FSTAB="/etc/recovery.fstab"
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[ ! -f "$FSTAB" ] && FSTAB="/etc/recovery.fstab.bak"
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[ -f "$FSTAB" ] && BOOTIMAGE=`grep -E '\b/boot\b' "$FSTAB" | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
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fi
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}
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is_mounted() {
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if [ ! -z "$2" ]; then
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cat /proc/mounts | grep $1 | grep $2, >/dev/null
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else
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cat /proc/mounts | grep $1 >/dev/null
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fi
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return $?
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}
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mount_image() {
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if [ ! -d "$2" ]; then
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mount -o rw,remount rootfs /
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mkdir -p $2 2>/dev/null
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($BOOTMODE) && mount -o ro,remount rootfs /
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[ ! -d "$2" ] && return 1
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fi
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if (! is_mounted $2); then
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LOOPDEVICE=
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for LOOP in 0 1 2 3 4 5 6 7; do
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if (! is_mounted $2); then
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LOOPDEVICE=/dev/block/loop$LOOP
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if [ ! -f "$LOOPDEVICE" ]; then
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mknod $LOOPDEVICE b 7 $LOOP 2>/dev/null
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fi
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losetup $LOOPDEVICE $1
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if [ "$?" -eq "0" ]; then
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mount -t ext4 -o loop $LOOPDEVICE $2
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if (! is_mounted $2); then
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/system/bin/toolbox mount -t ext4 -o loop $LOOPDEVICE $2
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fi
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if (! is_mounted $2); then
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/system/bin/toybox mount -t ext4 -o loop $LOOPDEVICE $2
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fi
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fi
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if (is_mounted $2); then
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ui_print "- Mounting $1 to $2"
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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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grep_prop() {
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REGEX="s/^$1=//p"
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shift
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FILES=$@
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if [ -z "$FILES" ]; then
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FILES='/system/build.prop'
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fi
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cat $FILES 2>/dev/null | sed -n "$REGEX" | head -n 1
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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 "! System installed root detected, mount rw :("
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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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else
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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 2>/dev/null
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fi
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}
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# --cpio-add <incpio> <mode> <entry> <infile>
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cpio_add() {
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-add ramdisk.cpio $1 $2 $3
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}
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# --cpio-extract <incpio> <entry> <outfile>
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cpio_extract() {
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-extract ramdisk.cpio $1 $2
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}
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# --cpio-mkdir <incpio> <mode> <entry>
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cpio_mkdir() {
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-mkdir ramdisk.cpio $1 $2
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}
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##########################################################################################
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# Detection
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##########################################################################################
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ui_print "************************"
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ui_print "* MAGISK_VERSION_STUB"
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ui_print "************************"
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if [ ! -d "$COMMONDIR" ]; then
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ui_print "! Failed: Unable to extract zip file!"
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exit 1
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fi
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ui_print "- Mounting /system(ro), /cache, /data"
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mount -o ro /system 2>/dev/null
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mount /cache 2>/dev/null
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mount /data 2>/dev/null
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if [ ! -f '/system/build.prop' ]; then
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ui_print "! Failed: /system could not be mounted!"
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exit 1
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fi
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# read override variables
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getvar KEEPVERITY
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getvar KEEPFORCEENCRYPT
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getvar BOOTIMAGE
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[ -z $KEEPVERITY ] && KEEPVERITY=false
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[ -z $KEEPFORCEENCRYPT ] && KEEPFORCEENCRYPT=false
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# Check if system root is installed and remove
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remove_system_su
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API=`grep_prop ro.build.version.sdk`
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ABI=`grep_prop ro.product.cpu.abi | cut -c-3`
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ABI2=`grep_prop ro.product.cpu.abi2 | cut -c-3`
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ABILONG=`grep_prop ro.product.cpu.abi`
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ARCH=arm
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IS64BIT=false
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if [ "$ABI" = "x86" ]; then ARCH=x86; fi;
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if [ "$ABI2" = "x86" ]; then ARCH=x86; fi;
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if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; IS64BIT=true; fi;
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if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; IS64BIT=true; fi;
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if [ "$API" -lt "21" ]; then
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ui_print "! Magisk is only for Lollipop 5.0+ (SDK 21+)"
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exit 1
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fi
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ui_print "- Device platform: $ARCH"
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BINDIR=$INSTALLER/$ARCH
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chmod -R 755 $CHROMEDIR $BINDIR
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$IS64BIT && SYSTEMLIB=/system/lib64 || SYSTEMLIB=/system/lib
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find_boot_image
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if [ -z $BOOTIMAGE ]; then
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ui_print "! Unable to detect boot image"
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exit 1
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fi
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##########################################################################################
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# Environment
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##########################################################################################
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ui_print "- Constructing environment"
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is_mounted /data && MAGISKBIN=/data/magisk || MAGISKBIN=/cache/data_bin
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# Copy required files
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rm -rf $MAGISKBIN 2>/dev/null
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mkdir -p $MAGISKBIN
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cp -af $BINDIR/. $COMMONDIR/magisk.apk $COMMONDIR/init.magisk.rc $COMMONDIR/custom_ramdisk_patch.sh $MAGISKBIN
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chmod -R 755 $MAGISKBIN
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chcon -h u:object_r:system_file:s0 $MAGISKBIN $MAGISKBIN/*
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##########################################################################################
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# Magisk Image
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##########################################################################################
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# Fix SuperSU.....
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$BOOTMODE && $BINDIR/magiskpolicy --live "allow fsck * * *"
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if (is_mounted /data); then
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IMG=/data/magisk.img
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else
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IMG=/cache/magisk.img
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ui_print "- Data unavailable, use cache workaround"
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fi
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if [ -f $IMG ]; then
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ui_print "- $IMG detected!"
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else
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ui_print "- Creating $IMG"
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make_ext4fs -l 64M -a /magisk -S $COMMONDIR/file_contexts_image $IMG
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fi
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mount_image $IMG /magisk
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if (! is_mounted /magisk); then
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ui_print "! Magisk image mount failed..."
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exit 1
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fi
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MAGISKLOOP=$LOOPDEVICE
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# Core folders and scripts
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mkdir -p $COREDIR/props $COREDIR/magiskhide $COREDIR/post-fs-data.d $COREDIR/service.d 2>/dev/null
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cp -af $COMMONDIR/magiskhide/. $COREDIR/magiskhide
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chmod -R 755 $COREDIR/bin $COREDIR/magiskhide $COREDIR/post-fs-data.d $COREDIR/service.d
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chown -R 0.0 $COREDIR/bin $COREDIR/magiskhide $COREDIR/post-fs-data.d $COREDIR/service.d
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##########################################################################################
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# Unpack boot
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##########################################################################################
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ui_print "- Found Boot Image: $BOOTIMAGE"
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rm -rf $BOOTTMP 2>/dev/null
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mkdir -p $BOOTTMP
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cd $BOOTTMP
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ui_print "- Unpacking boot image"
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --unpack $BOOTIMAGE
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case $? in
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1 )
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ui_print "! Unable to unpack boot image"
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exit 1
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;;
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2 )
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ui_print "! Sony ELF32 format detected"
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ui_print "! Please use BootBridge from @AdrianDC to flash Magisk"
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exit 1
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;;
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3 )
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ui_print "! Sony ELF64 format detected"
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ui_print "! Stock kernel cannot be patched, please use a custom kernel"
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exit 1
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esac
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##########################################################################################
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# Ramdisk restores
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##########################################################################################
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# Update our previous backup to new format if exists
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if [ -f /data/stock_boot.img ]; then
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SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --sha1 /data/stock_boot.img | tail -n 1`
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STOCKDUMP=/data/stock_boot_${SHA1}.img
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mv /data/stock_boot.img $STOCKDUMP
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --compress $STOCKDUMP
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fi
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# Test patch status and do restore, after this section, ramdisk.cpio.orig is guaranteed to exist
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SUPERSU=false
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ui_print "- Checking patch status"
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-test ramdisk.cpio
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case $? in
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0 ) # Stock boot
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ui_print "- Backing up stock boot image"
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rm -f /data/stock_boot*
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SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --sha1 $BOOTIMAGE | tail -n 1`
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is_mounted /data && STOCKDUMP=/data/stock_boot_${SHA1}.img || STOCKDUMP=/cache/stock_boot_${SHA1}.img
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dd if=$BOOTIMAGE of=$STOCKDUMP
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --compress $STOCKDUMP
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cp -af ramdisk.cpio ramdisk.cpio.orig
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;;
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1 ) # Magisk patched
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# Find SHA1 of stock boot image
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if [ -z $SHA1 ]; then
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-extract ramdisk.cpio init.magisk.rc init.magisk.rc
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SHA1=`grep_prop "# STOCKSHA1" init.magisk.rc`
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[ ! -z $SHA1 ] && STOCKDUMP=/data/stock_boot_${SHA1}.img
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rm -f init.magisk.rc
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fi
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ui_print "- Restoring ramdisk backup"
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-restore ramdisk.cpio
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if [ $? -ne 0 ]; then
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# Restore failed, try to find original
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ui_print "! Cannot restore from ramdisk backup"
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ui_print "- Finding stock boot image backup"
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if [ -f ${STOCKDUMP}.gz ]; then
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --unpack stock_boot.img
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rm -f stock_boot.img
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else
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ui_print "! Cannot find stock boot image backup"
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ui_print "! Will still try to complete installation"
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fi
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fi
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cp -af ramdisk.cpio ramdisk.cpio.orig
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;;
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2 ) # SuperSU patched
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SUPERSU=true
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ui_print "- SuperSU patched boot detected!"
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ui_print "- Adding ramdisk patch script for SuperSU"
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cp -af $COMMONDIR/custom_ramdisk_patch.sh /data/custom_ramdisk_patch.sh
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ui_print "- We are using SuperSU's own tools, mounting su.img"
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is_mounted /data && SUIMG=/data/su.img || SUIMG=/cache/su.img
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mount_image $SUIMG /su
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SUPERSULOOP=$LOOPDEVICE
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if (is_mounted /su); then
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ui_print "- Restoring ramdisk backup with sukernel"
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LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-restore ramdisk.cpio ramdisk.cpio.orig
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if [ $? -ne 0 ]; then
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ui_print "! Cannot restore from ramdisk"
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ui_print "- Finding stock boot image backup with sukernel"
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LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --restore ramdisk.cpio stock_boot.img
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if [ $? -eq 0 ]; then
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --unpack stock_boot.img
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cp -af ramdisk.cpio ramdisk.cpio.orig
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rm stock_boot.img
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else
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ui_print "! Cannot find stock boot image backup"
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exit 1
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fi
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fi
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else
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ui_print "! SuperSU image mount failed..."
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ui_print "! Magisk scripts are placed correctly"
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ui_print "! Flash SuperSU immediately to finish installation"
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exit 1
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fi
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;;
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esac
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##########################################################################################
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# Boot image patches
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##########################################################################################
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# All ramdisk patch commands are stored in a separate script
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ui_print "- Patching ramdisk"
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if $SUPERSU; then
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# Use sukernel to patch ramdisk, so we can use its own tools to backup
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sh $COMMONDIR/custom_ramdisk_patch.sh $BOOTTMP/ramdisk.cpio
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# Create ramdisk backups
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LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-backup ramdisk.cpio.orig ramdisk.cpio ramdisk.cpio
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else
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# The common patches
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$KEEPVERITY || LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-patch-dmverity ramdisk.cpio
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$KEEPFORCEENCRYPT || LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-patch-forceencrypt ramdisk.cpio
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# Add magisk entrypoint
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cpio_extract init.rc init.rc
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grep "import /init.magisk.rc" init.rc >/dev/null || sed -i '1,/.*import.*/s/.*import.*/import \/init.magisk.rc\n&/' init.rc
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sed -i "/selinux.reload_policy/d" init.rc
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cpio_add 750 init.rc init.rc
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# sepolicy patches
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cpio_extract sepolicy sepolicy
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magisk magiskpolicy --load sepolicy --save sepolicy --minimal
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cpio_add 644 sepolicy sepolicy
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# Add new items
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[ ! -z $SHA1 ] && echo "# STOCKSHA1=$SHA1" >> $COMMONDIR/init.magisk.rc
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cpio_add 750 init.magisk.rc $COMMONDIR/init.magisk.rc
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cpio_add 755 sbin/magisk $BINDIR/magisk
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# Create ramdisk backups
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-backup ramdisk.cpio ramdisk.cpio.orig
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fi
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rm -f ramdisk.cpio.orig
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##########################################################################################
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# Repack and flash
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##########################################################################################
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# Hexpatches
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# Remove Samsung RKP in stock kernel
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LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --hexpatch kernel \
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49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \
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A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054
|
|
|
|
ui_print "- Repacking boot image"
|
|
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --repack $BOOTIMAGE
|
|
|
|
case $? in
|
|
1 )
|
|
ui_print "! Unable to repack boot image!"
|
|
exit 1
|
|
;;
|
|
2 )
|
|
ui_print "! Boot partition space insufficient"
|
|
ui_print "! Remove ramdisk backups and try again"
|
|
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-rm ramdisk.cpio -r .backup
|
|
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --repack $BOOTIMAGE
|
|
if [ $? -eq 2 ]; then
|
|
ui_print "! Boot partition size still too small..."
|
|
ui_print "! Unable to install Magisk"
|
|
exit 1
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# Sign chromeos boot
|
|
if [ -f chromeos ]; then
|
|
cp -af $CHROMEDIR/. $MAGISKBIN/chromeos
|
|
echo > config
|
|
echo > bootloader
|
|
LD_LIBRARY_PATH=$SYSTEMLIB $CHROMEDIR/futility vbutil_kernel --pack new-boot.img.signed --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk --version 1 --vmlinuz new-boot.img --config config --arch arm --bootloader bootloader --flags 0x1
|
|
rm -f new-boot.img
|
|
mv new-boot.img.signed new-boot.img
|
|
fi
|
|
|
|
ui_print "- Flashing new boot image"
|
|
[ ! -L $BOOTIMAGE ] && dd if=/dev/zero of=$BOOTIMAGE bs=4096 2>/dev/null
|
|
dd if=new-boot.img of=$BOOTIMAGE bs=4096
|
|
|
|
cd /
|
|
|
|
if ! $BOOTMODE; then
|
|
ui_print "- Unmounting partitions"
|
|
umount /magisk
|
|
losetup -d $MAGISKLOOP 2>/dev/null
|
|
rmdir /magisk
|
|
if $SUPERSU; then
|
|
umount /su
|
|
losetup -d $SUPERSULOOP 2>/dev/null
|
|
rmdir /su
|
|
fi
|
|
umount /system
|
|
fi
|
|
|
|
ui_print "- Done"
|
|
exit 0
|