Magisk-v18.1

########################################################################################## # # Magisk General Utility Functions # by topjohnwu # # Used everywhere in Magisk # ########################################################################################## MAGISK_VER="18.1" MAGISK_VER_CODE=18100 # Detect whether in boot mode [ -z $BOOTMODE ] && BOOTMODE=false $BOOTMODE || ps | grep zygote | grep -qv grep && BOOTMODE=true $BOOTMODE || ps -A | grep zygote | grep -qv grep && BOOTMODE=true # Presets MAGISKTMP=/sbin/.magisk [ -z $NVBASE ] && NVBASE=/data/adb [ -z $MAGISKBIN ] && MAGISKBIN=$NVBASE/magisk [ -z $IMG ] && IMG=$NVBASE/magisk.img # Bootsigner related stuff BOOTSIGNERCLASS=a.a BOOTSIGNER="/system/bin/dalvikvm -Xnodex2oat -Xnoimage-dex2oat -cp \$APK \$BOOTSIGNERCLASS" BOOTSIGNED=false setup_flashable() { $BOOTMODE && return # Preserve environment varibles OLD_PATH=$PATH setup_bb if [ -z $OUTFD ] || readlink /proc/$$/fd/$OUTFD | grep -q /tmp; then # We will have to manually find out OUTFD for FD in `ls /proc/$$/fd`; do if readlink /proc/$$/fd/$FD | grep -q pipe; then if ps | grep -v grep | grep -q " 3 $FD "; then OUTFD=$FD break fi fi done fi } # Backward compatibility get_outfd() { setup_flashable } ui_print() { $BOOTMODE && echo "$1" || echo -e "ui_print $1\nui_print" >> /proc/self/fd/$OUTFD } toupper() { echo "$@" | tr '[:lower:]' '[:upper:]' } find_block() { for BLOCK in "$@"; do DEVICE=`find /dev/block -type l -iname $BLOCK | head -n 1` 2>/dev/null if [ ! -z $DEVICE ]; then readlink -f $DEVICE return 0 fi done # Fallback by parsing sysfs uevents for uevent in /sys/dev/block/*/uevent; do local DEVNAME=`grep_prop DEVNAME $uevent` local PARTNAME=`grep_prop PARTNAME $uevent` for BLOCK in "$@"; do if [ "`toupper $BLOCK`" = "`toupper $PARTNAME`" ]; then echo /dev/block/$DEVNAME return 0 fi done done return 1 } mount_partitions() { # Check A/B slot SLOT=`grep_cmdline androidboot.slot_suffix` if [ -z $SLOT ]; then SLOT=_`grep_cmdline androidboot.slot` [ $SLOT = "_" ] && SLOT= fi [ -z $SLOT ] || ui_print "- Current boot slot: $SLOT" ui_print "- Mounting /system, /vendor" [ -f /system/build.prop ] || is_mounted /system || mount -o ro /system 2>/dev/null if ! is_mounted /system && ! [ -f /system/build.prop ]; then SYSTEMBLOCK=`find_block system$SLOT` mount -t ext4 -o ro $SYSTEMBLOCK /system fi [ -f /system/build.prop ] || is_mounted /system || abort "! Cannot mount /system" grep -qE '/dev/root|/system_root' /proc/mounts && SYSTEM_ROOT=true || SYSTEM_ROOT=false if [ -f /system/init ]; then SYSTEM_ROOT=true mkdir /system_root 2>/dev/null mount --move /system /system_root mount -o bind /system_root/system /system fi if [ -L /system/vendor ]; then # Seperate /vendor partition is_mounted /vendor || mount -o ro /vendor 2>/dev/null if ! is_mounted /vendor; then VENDORBLOCK=`find_block vendor$SLOT` mount -t ext4 -o ro $VENDORBLOCK /vendor fi is_mounted /vendor || abort "! Cannot mount /vendor" fi } get_flags() { # override variables getvar KEEPVERITY getvar KEEPFORCEENCRYPT getvar RECOVERYMODE if [ -z $KEEPVERITY ]; then if $SYSTEM_ROOT; then KEEPVERITY=true ui_print "- Using system_root_image, keep dm/avb-verity" else KEEPVERITY=false fi fi if [ -z $KEEPFORCEENCRYPT ]; then grep ' /data ' /proc/mounts | grep -q 'dm-' && FDE=true || FDE=false [ -d /data/unencrypted ] && FBE=true || FBE=false # No data access means unable to decrypt in recovery if $FDE || $FBE || ! $DATA; then KEEPFORCEENCRYPT=true ui_print "- Encrypted data detected, keep forceencrypt" else KEEPFORCEENCRYPT=false fi fi [ -z $RECOVERYMODE ] && RECOVERYMODE=false } grep_cmdline() { local REGEX="s/^$1=//p" cat /proc/cmdline | tr '[:space:]' '\n' | sed -n "$REGEX" 2>/dev/null } grep_prop() { local REGEX="s/^$1=//p" shift local FILES=$@ [ -z "$FILES" ] && FILES='/system/build.prop' sed -n "$REGEX" $FILES 2>/dev/null | head -n 1 } getvar() { local VARNAME=$1 local VALUE= VALUE=`grep_prop $VARNAME /sbin/.magisk/config /data/.magisk /cache/.magisk` [ ! -z $VALUE ] && eval $VARNAME=\$VALUE } run_migrations() { # Update the broken boot backup if [ -f /data/stock_boot_.img.gz ]; then $MAGISKBIN/magiskboot --decompress /data/stock_boot_.img.gz /data/stock_boot.img fi # Update our previous backup to new format if exists if [ -f /data/stock_boot.img ]; then ui_print "- Migrating boot image backup" SHA1=`$MAGISKBIN/magiskboot --sha1 /data/stock_boot.img 2>/dev/null` STOCKDUMP=/data/stock_boot_${SHA1}.img mv /data/stock_boot.img $STOCKDUMP $MAGISKBIN/magiskboot --compress $STOCKDUMP fi # Move the stock backups if [ -f /data/magisk/stock_boot* ]; then mv /data/magisk/stock_boot* /data 2>/dev/null fi if [ -f /data/adb/magisk/stock_boot* ]; then mv /data/adb/magisk/stock_boot* /data 2>/dev/null fi # Remove old dbs rm -f /data/user*/*/magisk.db [ -L /data/magisk.img ] || mv /data/magisk.img /data/adb/magisk.img 2>/dev/null } find_boot_image() { BOOTIMAGE= if [ ! -z $SLOT ]; then BOOTIMAGE=`find_block ramdisk$SLOT recovery_ramdisk$SLOT boot$SLOT` else BOOTIMAGE=`find_block ramdisk recovery_ramdisk boot boot_a kern-a android_boot kernel lnx bootimg` fi if [ -z $BOOTIMAGE ]; then # Lets see what fstabs tells me BOOTIMAGE=`grep -v '#' /etc/*fstab* | grep -E '/boot[^a-zA-Z]' | grep -oE '/dev/[a-zA-Z0-9_./-]*' | head -n 1` fi } flash_image() { # Make sure all blocks are writable $MAGISKBIN/magisk --unlock-blocks 2>/dev/null case "$1" in *.gz) COM1="$MAGISKBIN/magiskboot --decompress '$1' - 2>/dev/null";; *) COM1="cat '$1'";; esac if $BOOTSIGNED; then COM2="$BOOTSIGNER -sign" ui_print "- Sign image with test keys" else COM2="cat -" fi if [ -b "$2" ]; then local s_size=`stat -c '%s' "$1"` local t_size=`blockdev --getsize64 "$2"` [ $s_size -gt $t_size ] && return 1 eval $COM1 | eval $COM2 | cat - /dev/zero > "$2" 2>/dev/null else ui_print "- Not block device, storing image" eval $COM1 | eval $COM2 > "$2" 2>/dev/null fi return 0 } find_dtbo_image() { DTBOIMAGE=`find_block dtbo$SLOT` } patch_dtbo_image() { if [ ! -z $DTBOIMAGE ]; then if $MAGISKBIN/magiskboot --dtb-test $DTBOIMAGE; then ui_print "- Backing up stock DTBO image" $MAGISKBIN/magiskboot --compress $DTBOIMAGE $MAGISKBIN/stock_dtbo.img.gz ui_print "- Patching DTBO to remove avb-verity" $MAGISKBIN/magiskboot --dtb-patch $DTBOIMAGE return 0 fi fi return 1 } sign_chromeos() { ui_print "- Signing ChromeOS boot image" echo > empty ./chromeos/futility vbutil_kernel --pack new-boot.img.signed \ --keyblock ./chromeos/kernel.keyblock --signprivate ./chromeos/kernel_data_key.vbprivk \ --version 1 --vmlinuz new-boot.img --config empty --arch arm --bootloader empty --flags 0x1 rm -f empty new-boot.img mv new-boot.img.signed new-boot.img } is_mounted() { grep -q " `readlink -f $1` " /proc/mounts 2>/dev/null return $? } remove_system_su() { if [ -f /system/bin/su -o -f /system/xbin/su ] && [ ! -f /su/bin/su ]; then ui_print "- Removing system installed root" mount -o rw,remount /system # SuperSU if [ -e /system/bin/.ext/.su ]; then mv -f /system/bin/app_process32_original /system/bin/app_process32 2>/dev/null mv -f /system/bin/app_process64_original /system/bin/app_process64 2>/dev/null mv -f /system/bin/install-recovery_original.sh /system/bin/install-recovery.sh 2>/dev/null cd /system/bin if [ -e app_process64 ]; then ln -sf app_process64 app_process else ln -sf app_process32 app_process fi