On Fri, Jul 27, 2018 at 03:05:43PM -0700, Sandeep Patil wrote: > On Fri, Jul 27, 2018 at 04:21:14PM -0400, Theodore Y. Ts'o wrote: > > On Fri, Jul 27, 2018 at 04:11:03PM -0400, Steven Rostedt wrote: > > > That said, I would assume that > > > other Android utilities are using other debugfs files for system > > > status and such. > > As of today, I think a lot of information in 'bugreports' is read > out of debugfs (including things like binder stats). We do have a plan > to change that. Hmm, if it's only for bugreports, maybe it can be only mounted when about root processes getting tricked into reading from debugfs. > Indeed, I think it can. However, the problem is the last time I tried to > remove this a whole bunch of things just broke. So, it wasn't about losing > a functionality here and there. Agree, we need to clean up platform to not use > debugfs first. Then we can expect Apps or other native processes to not rely > on debugfs at all. Is Android controlling access to debugfs files via SELinux? If so, then access to debugfs can be gradually cranked down as use cases are removed. - Ted
