Magisk/scripts/flash_script.sh

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#MAGISK
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##########################################################################################
#
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# Magisk Flash Script
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# by topjohnwu
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#
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# This script will detect, construct the environment for Magisk
# It will then call boot_patch.sh to patch the boot image
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#
##########################################################################################
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##########################################################################################
# Preparation
##########################################################################################
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COMMONDIR=$INSTALLER/common
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APK=$COMMONDIR/magisk.apk
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CHROMEDIR=$INSTALLER/chromeos
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# Default permissions
umask 022
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OUTFD=$2
ZIP=$3
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if [ ! -f $COMMONDIR/util_functions.sh ]; then
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echo "! Unable to extract zip file!"
exit 1
fi
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# Load utility fuctions
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. $COMMONDIR/util_functions.sh
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setup_flashable
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##########################################################################################
# Detection
##########################################################################################
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ui_print "************************"
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ui_print "* Magisk v$MAGISK_VER Installer"
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ui_print "************************"
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is_mounted /data || mount /data || is_mounted /cache || mount /cache
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mount_partitions
check_data
get_flags
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find_boot_image
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[ -z $BOOTIMAGE ] && abort "! Unable to detect target image"
ui_print "- Target image: $BOOTIMAGE"
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# Detect version and architecture
api_level_arch_detect
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[ $API -lt 18 ] && abort "! Magisk is only for Android 4.3 and above"
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ui_print "- Device platform: $ARCH"
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BINDIR=$INSTALLER/$ARCH32
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chmod -R 755 $CHROMEDIR $BINDIR
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# Check if system root is installed and remove
remove_system_su
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##########################################################################################
# Environment
##########################################################################################
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ui_print "- Constructing environment"
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# Copy required files
rm -rf $MAGISKBIN/* 2>/dev/null
mkdir -p $MAGISKBIN 2>/dev/null
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cp -af $BINDIR/. $COMMONDIR/. $CHROMEDIR $BBDIR/busybox $MAGISKBIN
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chmod -R 755 $MAGISKBIN
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# addon.d
if [ -d /system/addon.d ]; then
ui_print "- Adding addon.d survival script"
mount -o rw,remount /system
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ADDOND=/system/addon.d/99-magisk.sh
cat <<EOF > $ADDOND
#!/sbin/sh
# ADDOND_VERSION=2
if [ -f /data/adb/magisk/addon.d.sh ]; then
exec sh /data/adb/magisk/addon.d.sh "\$@"
else
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OUTFD=\$(ps | grep -v 'grep' | grep -oE 'update(.*)' | cut -d" " -f3)
ui_print() { echo -e "ui_print \$1\nui_print" >> /proc/self/fd/\$OUTFD; }
ui_print "************************"
ui_print "* Magisk addon.d failed"
ui_print "************************"
ui_print "! Cannot find Magisk binaries - was data wiped or not decrypted?"
ui_print "! Reflash OTA from decrypted recovery or reflash Magisk"
fi
EOF
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chmod 755 $ADDOND
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fi
$BOOTMODE || recovery_actions
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##########################################################################################
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# Boot patching
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##########################################################################################
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eval $BOOTSIGNER -verify < $BOOTIMAGE && BOOTSIGNED=true
$BOOTSIGNED && ui_print "- Boot image is signed with AVB 1.0"
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SOURCEDMODE=true
cd $MAGISKBIN
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$IS64BIT && mv -f magiskinit64 magiskinit || rm -f magiskinit64
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# Source the boot patcher
. ./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
ui_print "- Compressing ramdisk to fit in partition"
./magiskboot cpio ramdisk.cpio compress
./magiskboot repack "$BOOTIMAGE"
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flash_image new-boot.img "$BOOTIMAGE" || abort "! Insufficient partition size"
fi
./magiskboot cleanup
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rm -f new-boot.img
if [ -f stock_boot* ]; then
rm -f /data/stock_boot* 2>/dev/null
$DATA && mv stock_boot* /data
fi
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$KEEPVERITY || patch_dtbo_image
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if [ -f stock_dtbo* ]; then
rm -f /data/stock_dtbo* 2>/dev/null
$DATA && mv stock_dtbo* /data
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fi
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cd /
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# Cleanups
$BOOTMODE || recovery_cleanup
rm -rf $TMPDIR
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ui_print "- Done"
exit 0