IsHacker003

Background

Google compiles the Pixel 2 kernel with Clang. They shipped the device on Android 8.0 with a kernel compiled with Clang 4.0 (build.config commit and prebuilt kernel commit) and upgraded to Android 8.1 with a kernel compiled with Clang 5.0 (build.config commit and prebuilt kernel commit).

Google uses Clang's link-time optimization and control flow integrity in the Pixel 3 kernel, hardening it against return oriented programming attacks (LTO commit, [CFI commit](https://android.googlesource.com/kernel/msm/+/4ca69fba29179

IsHacker003

#!/bin/bash

# Detect tethering interface name on the phone (rndis0 or usb0)

intf_cmd=$(adb shell "su -c 'if [ -e \"/sys/class/net/usb0\" ]; then echo \"Tethering interface: usb0\"; elif [ -e \"/sys/class/net/rndis0\" ]; then echo \"Tethering interface: rndis0\"; else echo \"Unable to find tethering interface.\"; fi'")

if [ "$intf_cmd" == "Tethering interface: usb0" ]
then
   echo "$intf_cmd"
   intf="usb0"