Introduce MagiskSU

scripts/magisksu.sh

@@ -0,0 +1,28 @@
+#!/system/bin/sh
+
+MODDIR=${0%/*}
+LOGFILE=/cache/magisk.log
+PATH=$OLDPATH
+
+log_print() {
+  echo "MagiskSU: $1"
+  echo "MagiskSU: $1" >> $LOGFILE
+  log -p i -t Magisk "MagiskSU: $1"
+}
+
+log_print "Moving and linking /sbin binaries"
+mount -o rw,remount rootfs /
+/data/busybox/cp -afc /sbin /sbin_orig
+mount -o ro,remount rootfs /
+
+log_print "Exposing su binary"
+rm -rf /magisk/.core/bin $MODDIR/sbin_bind
+mkdir -p $MODDIR/sbin_bind
+ln -s /sbin_orig/* $MODDIR/sbin_bind
+chcon -h u:object_r:rootfs:s0 $MODDIR/sbin_bind/*
+chmod 755 $MODDIR/sbin_bind
+ln -s $MODDIR/su $MODDIR/sbin_bind/su
+mount -o bind $MODDIR/sbin_bind /sbin
+
+log_print "Starting su daemon"
+/sbin/su --daemon