MacOS VFS file system isolation filter.

I have committed a MacOS VFS isolation filter project to my GitHub repository - MacOSX-VFS-Isolation-Filter The filter allows to isolate files I/O operation. The possible applications for a filter are content analyzing, encryption or any advanced data flow modification.

VFS structures have changed in Sierra

After Sierra(10.12) was released I received two tickets for my Mac OS X file system filter project on GitHub MacOSX-FileSystem-Filter . It happened that vnode structure has changed. The offset for v_op field has changed from 0xC8 to 0xD0. Instead of hardcoding a new definition I activated the dynamic inference for structure layouts that has been in the project for a long time but had not been used as structures had not changed for years.

Update: Apple released 10.12 source code on 25 November 2016. To download xnu/Darwin source code follow the link https://opensource.apple.com/release/os-x-1012.html