FuseFB uses FUSE low level block API CUSE to simulate a Linux Framebuffer (like /dev/fb0)
The file fbe.c is a copy from http://sixpak.org/fbe/
Fisrt thing you need to make sure you have is the kernel module cuse, you can check running lsmod | grep cuse
For now you can start the "Driver" and use the test program 'get_fb_info_test' like this:
$ make
$ sudo ./driver &
$ sudo ./get_fb_info_test /dev/fb_fuse_buffer
The same program also works with the native framebuffer:
$ sudo ./get_fb_info_test /dev/fb0