Signals and fork()

What happens with signals and signal-related settings after fork(2)? A new child starts with the signal queue empty even if some signals were queued for the parent at the time fork(2) was invoked. Signal handers and blocked signal state is inherited by the child. Attributes of file descriptors associated with signals are also inherited. In conclusion: no unexpected behavior here, you don't need to set up any signal handlers or mask in the child.