Fix SuperSU installation

scripts/custom_ramdisk_patch.sh

@@ -0,0 +1,57 @@
+#!/system/bin/sh
+
+RAMDISK=$1
+
+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
+
+mkdir -p $TMPDIR 2>/dev/null
+cd $TMPDIR
+
+cpio_add() {
+  LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-add $RAMDISK $RAMDISK $1 $2 $3
+}
+
+cpio_extract() {
+  LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-extract $RAMDISK $1 $2
+}
+
+cpio_mkdir() {
+  LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-mkdir $RAMDISK $RAMDISK $1 $2
+}
+
+# Recursive
+cpio_rm() {
+  if [ "$1" = "-r" ]; then
+    LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-ls $RAMDISK | grep "^$2/" | while read i ; do
+      LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-rm $RAMDISK $RAMDISK $i
+    done
+    LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-rmdir $RAMDISK $RAMDISK $2
+  else
+    LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-rm $RAMDISK $RAMDISK $1
+  fi
+}
+
+# Cleanup SuperSU backups
+cpio_rm -r .subackup
+
+# Add magisk entrypoint
+cpio_extract init.rc init.rc
+grep "import /init.magisk.rc" init.rc >/dev/null || sed -i '1,/.*import.*/s/.*import.*/import \/init.magisk.rc\n&/' init.rc
+sed -i "/selinux.reload_policy/d" init.rc
+cpio_add 750 init.rc init.rc
+
+# sepolicy patches
+cpio_extract sepolicy sepolicy
+LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskpolicy --load sepolicy --save sepolicy --minimal
+cpio_add 644 sepolicy sepolicy
+
+# Add new items
+cpio_mkdir 755 magisk
+cpio_add 750 init.magisk.rc $MAGISKBIN/init.magisk.rc
+cpio_add 750 sbin/magic_mask.sh $MAGISKBIN/magic_mask.sh
+