The macros and data typed used are declared in <code>include/ub/ub_stat.h</code> file.

'''<code>func</code>''' is like <code>cmd</code> in the <code>ioctl</code> system call. It can be one of

'''<code>size</code>''' is the <code>buf</code> memory size.

The format of data returned into the buffer depends on the function requested.