Alessandro Mauri
86a6af5073
allocate user info in a structure on the stack, this way memory is managed for us and we don't have to free most things that would be difficult to free.
US - User {Switcher,Shell}
Opens a shell as a different user without needing to authenticate as that user.
This is similar to the behavior of su but it allows to execute privileged
and/or commands as any other user without needing their password.