mirror of
https://github.com/topjohnwu/Magisk
synced 2024-11-11 17:38:25 +01:00
463 lines
13 KiB
Plaintext
463 lines
13 KiB
Plaintext
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#!/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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TMPDIR=/tmp
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if [ -z "$BOOTMODE" ]; then
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BOOTMODE=false
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fi
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mount -o rw,remount rootfs /
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mkdir /magisk 2>/dev/null
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if ($BOOTMODE); then
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TMPDIR=/data/tmp
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mount -o ro,remount rootfs /
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fi
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INSTALLER=$TMPDIR/magisk
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COREDIR=/magisk/.core
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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 \$"$VARNAME");
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for FILE in /data/.magisk /cache/.magisk /system/.magisk; do
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if [ -z "$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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}
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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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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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repack_boot() {
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cd $RAMDISK
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find . | cpio -o -H newc 2>/dev/null | gzip -9 > $UNPACKDIR/ramdisk.gz
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cd $UNPACKDIR
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$BINDIR/bootimgtools --repack $ORIGBOOT
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if [ -f chromeos ]; then
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echo " " > config
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echo " " > bootloader
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$CHROMEDIR/futility vbutil_kernel --pack new-boot.img.signed --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk --version 1 --vmlinuz new-boot.img --config config --arch arm --bootloader bootloader --flags 0x1
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rm -f new-boot.img
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mv new-boot.img.signed new-boot.img
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fi
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if ($SAMSUNG); then
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SAMSUNG_CHECK=$(cat new-boot.img | grep SEANDROIDENFORCE)
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if [ $? -ne 0 ]; then
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echo -n "SEANDROIDENFORCE" >> new-boot.img
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fi
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fi
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mv new-boot.img $NEWBOOT
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$BINDIR/bootimgtools --hexpatch $NEWBOOT \
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49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \
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A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054
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}
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##########################################################################################
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# Detection
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##########################################################################################
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ui_print "****************************"
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ui_print "Magisk v7 Boot Image Patcher"
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ui_print "****************************"
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if [ ! -d "$INSTALLER/common" ]; 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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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=
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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 [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; IS64BIT=1; fi;
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if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; IS64BIT=1; 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/arm
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if [ "$ARCH" = "x86" -o "$ARCH" = "x64" ]; then
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BINDIR=$INSTALLER/x86
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fi
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find_boot_image
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if [ -z "$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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if [ -z "$NOOVERRIDE" ]; then
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# read override variables
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getvar KEEPVERITY
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getvar KEEPFORCEENCRYPT
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getvar KEEPSUPERSU
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fi
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if [ -z "$KEEPVERITY" ]; then
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# we don't keep dm-verity by default
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KEEPVERITY=false
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fi
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if [ -z "$KEEPFORCEENCRYPT" ]; then
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# we don't keep forceencrypt by default
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KEEPFORCEENCRYPT=false
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fi
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if [ -z "$KEEPSUPERSU" ]; then
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# we don't keep SuperSU by default
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KEEPSUPERSU=false
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fi
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SAMSUNG=false
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SAMSUNG_CHECK=$(cat /system/build.prop | grep "ro.build.fingerprint=" | grep -i "samsung")
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if [ $? -eq 0 ]; then
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SAMSUNG=true
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fi
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##########################################################################################
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# Image
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##########################################################################################
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if (is_mounted /data); then
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IMG=/data/magisk.img
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else
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IMG=/cache/magisk.img
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ui_print "- Data unavalible, use cache workaround"
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fi
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if [ -f "$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 $INSTALLER/common/file_contexts_image $IMG
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fi
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if (! is_mounted /magisk); then
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ui_print "- Mounting $IMG to /magisk"
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LOOPDEVICE=
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for LOOP in 0 1 2 3 4 5 6 7; do
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if (! is_mounted /magisk); then
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LOOPDEVICE=/dev/block/loop$LOOP
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if [ ! -f "$LOOPDEVICE" ]; then
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mknod $LOOPDEVICE b 7 $LOOP
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fi
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losetup $LOOPDEVICE $IMG
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if [ "$?" -eq "0" ]; then
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mount -t ext4 -o loop $LOOPDEVICE /magisk
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if (! is_mounted /magisk); then
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/system/bin/toolbox mount -t ext4 -o loop $LOOPDEVICE /magisk
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fi
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if (! is_mounted /magisk); then
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/system/bin/toybox mount -t ext4 -o loop $LOOPDEVICE /magisk
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fi
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fi
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if (is_mounted /magisk); then
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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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rm -rf $COREDIR/bin 2>/dev/null
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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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if (is_mounted /data); then
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rm -rf /data/busybox /data/magisk
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mkdir -p /data/busybox
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mkdir -p /data/magisk
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cp -af $BINDIR/busybox $BINDIR/su $BINDIR/sepolicy-inject /data/magisk
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chmod 755 /data/busybox /data/magisk /data/magisk/*
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chcon 'u:object_r:system_file:s0' /data/busybox /data/magisk /data/magisk/*
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/data/magisk/busybox --install -s /data/busybox
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# Prevent issues
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rm -f /data/busybox/su /data/busybox/sh
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else
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rm -rf /cache/data_bin
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mkdir -p /cache/data_bin
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cp -af $BINDIR/busybox $BINDIR/su $BINDIR/sepolicy-inject /cache/data_bin
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fi
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##########################################################################################
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# Boot image patch
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##########################################################################################
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ui_print "- Found Boot Image: $BOOTIMAGE"
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rm -rf $TMPDIR/boottmp 2>/dev/null
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mkdir -p $TMPDIR/boottmp
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CHROMEDIR=$INSTALLER/chromeos
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ORIGBOOT=$TMPDIR/boottmp/boot.img
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NEWBOOT=$TMPDIR/boottmp/new-boot.img
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UNPACKDIR=$TMPDIR/boottmp/bootunpack
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RAMDISK=$TMPDIR/boottmp/ramdisk
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mkdir -p $UNPACKDIR
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mkdir -p $RAMDISK
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chmod 777 $CHROMEDIR/futility $BINDIR/*
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ui_print "- Dumping boot image"
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dd if=$BOOTIMAGE of=$ORIGBOOT
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ui_print "- Unpacking boot image"
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cd $UNPACKDIR
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$BINDIR/bootimgtools --extract $ORIGBOOT
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chmod 755 $(find $TMPDIR/boottmp -type d)
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chmod 644 $(find $TMPDIR/boottmp -type f)
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cd $RAMDISK
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gunzip -c < $UNPACKDIR/ramdisk.gz | cpio -i
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if [ -f "supersu" ]; then
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KEEPSUPERSU=true
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fi
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if (! $KEEPSUPERSU); then
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# Backups
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if [ -d ".backup" ]; then
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ui_print "- Reverting ramdisk backup"
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cp -af .backup/* .
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rm -rf magisk init.magisk.rc sbin/magic_mask.sh sbin/magisk_wrapper.sh 2>/dev/null
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else
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if [ -d "magisk" -o -d "su" ]; then
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cp -af /data/stock_boot*.gz /data/stock_boot.img.gz 2>/dev/null
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gzip -d /data/stock_boot.img.gz 2>/dev/null
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if [ -f "/data/stock_boot.img" ]; then
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ui_print "- Using boot image backup"
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cp -af /data/stock_boot.img $ORIGBOOT
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rm -rf $RAMDISK $TMPDIR
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mkdir -p $UNPACKDIR
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mkdir -p $RAMDISK
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cd $UNPACKDIR
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$BINDIR/bootimgtools --extract $ORIGBOOT
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cd $RAMDISK
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gunzip -c < $UNPACKDIR/ramdisk.gz | cpio -i
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else
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ui_print "! No backups found"
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ui_print "! Installer will still proceed, but might cause issues"
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ui_print "! If possible, please restore to stock boot then flash Magisk again"
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# Force removing SuperSU parts
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rm -rf su init.supersu.rc sbin/launch_daemonsu.sh 2>/dev/null
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fi
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fi
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ui_print "- Creating backups"
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mkdir .backup
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cp -af init.rc *fstab* verity_key sepolicy .backup 2>/dev/null
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if (is_mounted /data); then
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cp -af $ORIGBOOT /data/stock_boot.img
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else
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cp -af $ORIGBOOT /cache/stock_boot.img
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fi
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fi
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fi
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# Patch ramdisk
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ui_print "- Patching ramdisk"
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if [ $(grep -c "import /init.magisk.rc" init.rc) -eq "0" ]; then
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sed -i "/import \/init\.environ\.rc/iimport /init.magisk.rc" init.rc
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fi
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if (! $KEEPSUPERSU); then
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sed -i "/selinux.reload_policy/d" init.rc
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find . -type f -name "*fstab*" 2>/dev/null | while read FSTAB ; do
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|
|
if (! $KEEPVERITY); then
|
||
|
|
sed -i "s/,support_scfs//g" $FSTAB
|
||
|
|
sed -i 's;,\{0,1\}verify\(=[^,]*\)\{0,1\};;g' $FSTAB
|
||
|
|
fi
|
||
|
|
if (! $KEEPFORCEENCRYPT); then
|
||
|
|
sed -i "s/forceencrypt/encryptable/g" $FSTAB
|
||
|
|
sed -i "s/forcefdeorfbe/encryptable/g" $FSTAB
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
rm verity_key 2>/dev/null
|
||
|
|
|
||
|
|
# sepolicy patches
|
||
|
|
# LD_LIBRARY_PATH=$BINDIR $BINDIR/supolicy --file sepolicy sepolicy.patched
|
||
|
|
# mv -f sepolicy.patched sepolicy
|
||
|
|
. $INSTALLER/common/supatch.sh
|
||
|
|
allow su_daemon "rootfs proc init system_file" "file dir lnk_file" "*"
|
||
|
|
allow init su_daemon unix_stream_socket connectto
|
||
|
|
allow su_daemon shell_exec file getattr
|
||
|
|
allow su_daemon tmpfs dir "*"
|
||
|
|
allow su_daemon selinuxfs file "read open write"
|
||
|
|
allow su_daemon kernel security "read_policy load_policy"
|
||
|
|
allow su_daemon toolbox_exec file "*"
|
||
|
|
allow kernel su fd use
|
||
|
|
allow init "rootfs system_file" file "*"
|
||
|
|
if $BINDIR/sepolicy-inject -e -s toolbox -P sepolicy; then
|
||
|
|
allow toolbox property_socket sock_file write
|
||
|
|
allow toolbox init unix_stream_socket connectto
|
||
|
|
allow toolbox init fifo_file "*"
|
||
|
|
allow toolbox default_prop property_service "*"
|
||
|
|
allow toolbox device dir "*"
|
||
|
|
fi
|
||
|
|
# Just in case
|
||
|
|
$BINDIR/sepolicy-inject -Z init -P sepolicy
|
||
|
|
$BINDIR/sepolicy-inject -Z toolbox -P sepolicy
|
||
|
|
$BINDIR/sepolicy-inject -Z su_daemon -P sepolicy
|
||
|
|
# Fix Xposed
|
||
|
|
allow zygote app_data_file "dir file" "*"
|
||
|
|
allow zygote input_device "dir chr_file" "*"
|
||
|
|
allow untrusted_app untrusted_app capability setgid
|
||
|
|
allow "system_server system_app" "app_data_file" "file dir" "*"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Add new items
|
||
|
|
mkdir -p magisk 2>/dev/null
|
||
|
|
cp -af $INSTALLER/common/init.magisk.rc init.magisk.rc
|
||
|
|
cp -af $INSTALLER/common/magic_mask.sh sbin/magic_mask.sh
|
||
|
|
cp -af $INSTALLER/common/magisk_wrapper.sh sbin/magisk_wrapper.sh
|
||
|
|
|
||
|
|
if (! $KEEPSUPERSU); then
|
||
|
|
cp -af $BINDIR/su $BINDIR/sepolicy-inject magisk
|
||
|
|
else
|
||
|
|
touch supersu
|
||
|
|
fi
|
||
|
|
|
||
|
|
chmod 0755 magisk magisk/*
|
||
|
|
chmod 0750 init.magisk.rc sbin/magic_mask.sh sbin/magisk_wrapper.sh
|
||
|
|
|
||
|
|
ui_print "- Repacking boot image"
|
||
|
|
repack_boot
|
||
|
|
|
||
|
|
ORIGSIZE=$(ls -l $ORIGBOOT | awk '{print $5}')
|
||
|
|
NEWSIZE=$(ls -l $NEWBOOT | awk '{print $5}')
|
||
|
|
if [ "$NEWSIZE" -gt "$ORIGSIZE" ]; then
|
||
|
|
ui_print "! Boot partition space insufficient"
|
||
|
|
ui_print "! Remove ramdisk backups and binaries"
|
||
|
|
rm -rf $RAMDISK/.backup $NEWBOOT $RAMDISK/magisk/* 2>/dev/null
|
||
|
|
if (! $KEEPSUPERSU); then
|
||
|
|
mkdir -p /cache/magisk
|
||
|
|
cp $BINDIR/su $BINDIR/sepolicy-inject /cache/magisk
|
||
|
|
chmod 755 /cache/magisk /cache/magisk/*
|
||
|
|
chcon 'u:object_r:system_file:s0' /cache/magisk /cache/magisk/*
|
||
|
|
fi
|
||
|
|
repack_boot
|
||
|
|
NEWSIZE=$(ls -l $NEWBOOT | awk '{print $5}')
|
||
|
|
if [ "$NEWSIZE" -gt "$ORIGSIZE" ]; then
|
||
|
|
ui_print "! Boot partition size still too small..."
|
||
|
|
ui_print "! Unable to install Magisk"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
chmod 644 $NEWBOOT
|
||
|
|
|
||
|
|
ui_print "- Flashing new boot image"
|
||
|
|
dd if=/dev/zero of=$BOOTIMAGE bs=4096 2>/dev/null
|
||
|
|
dd if=$NEWBOOT of=$BOOTIMAGE bs=4096
|
||
|
|
|
||
|
|
if (! $BOOTMODE); then
|
||
|
|
umount /magisk
|
||
|
|
losetup -d $LOOPDEVICE
|
||
|
|
umount /system
|
||
|
|
fi
|
||
|
|
|
||
|
|
ui_print "- Done"
|
||
|
|
exit 0
|