Missing syscall handlers

[kristopher-pellizzi]

This issue will be used as a thread to list all the missing system call handlers to be implemented

[kristopher-pellizzi]

ioctl, syscall num = 16 on Linux x86_64

NOTE: though 3rd argument is an unsigned long in its signature, it is sometimes used as a pointer pointing to a struct. This is a non-trivial syscall, needs in-depth study and more attention.