Magisk/scripts/ramdisk_patch.sh
2017-03-18 17:26:30 +08:00

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# This file will be sourced by Magisk patch zip, so all variables in the main script should be present
# However, this file may also be called by SuperSU, so we still have to find our own variables in this case
RAMDISK=$1
if [ -z $MAGISK ]; then
TMPDIR=/dev/tmp
MAGISKBIN=/data/magisk
[ ! -e $MAGISKBIN ] && MAGISKBIN=/cache/data_bin
[ ! -e $MAGISKBIN ] && exit 1
SYSTEMLIB=/system/lib
[ -d /system/lib64 ] && SYSTEMLIB=/system/lib64
KEEPVERITY=true
KEEPFORCEENCRYPT=true
fi
cd $TMPDIR
# --cpio-add <incpio> <mode> <entry> <infile>
cpio_add() {
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-add $RAMDISK $1 $2 $3
}
# --cpio-extract <incpio> <entry> <outfile>
cpio_extract() {
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-extract $RAMDISK $1 $2
}
# --cpio-mkdir <incpio> <mode> <entry>
cpio_mkdir() {
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-mkdir $RAMDISK $1 $2
}
# The common patches
$KEEPVERITY || LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-patch-dmverity $RAMDISK
$KEEPFORCEENCRYPT || LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-patch-forceencrypt $RAMDISK
# Add magisk entrypoint
cpio_extract init.rc init.rc
grep "import /init.magisk.rc" init.rc >/dev/null || sed -i '1,/.*import.*/s/.*import.*/import \/init.magisk.rc\n&/' init.rc
sed -i "/selinux.reload_policy/d" init.rc
cpio_add 750 init.rc init.rc
# sepolicy patches
cpio_extract sepolicy sepolicy
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskpolicy --load sepolicy --save sepolicy --minimal
cpio_add 644 sepolicy sepolicy
# Add new items
cpio_mkdir 755 magisk
cp -af $MAGISKBIN/init.magisk.rc init.magisk.rc
[ ! -z $SHA1 ] && echo "# STOCKSHA1=$SHA1" >> init.magisk.rc
cpio_add 750 init.magisk.rc init.magisk.rc
cpio_add 750 sbin/magic_mask.sh $MAGISKBIN/magic_mask.sh