After some play around with rooted devices, I got stuck on the files. Let's say we have a file somewhere in the root folder which I want to read/write from my application. The only way I found so far is changing the file permission like
String [] cmd = { "su", "-c", "chmod", "777", path};
Process process = new ProcessBuilder(cmd).start();
process.waitFor();
This works fine, the problem is that I want to return back the original file permissions after I'm done with it.
Can anybody help me with getting a file/directory current permissions?