- reuses old ksu functions
- makes sure its an empty dir
- adapted from https://github.com/rsuntk/KernelSU/commit/141f010 71cb86c2e9
Co-authored-by: powellnorma <101364699+powellnorma@users.noreply.github.com>
Co-authored-by: Rissu <90097027+rsuntk@users.noreply.github.com>