Function sys_rt_sigsuspend 

pub fn sys_rt_sigsuspend(
    locked: &mut Locked<Unlocked>,
    current_task: &mut CurrentTask,
    user_mask: UserRef<SigSet>,
    sigset_size: usize,
) -> Result<(), Errno>

The rt_sigsuspend syscall temporarily replaces the signal mask of the calling thread with the mask given by user_mask and then suspends the thread until delivery of a signal whose action is to invoke a signal handler or to terminate a process.

Args

• user_mask: A pointer to a signal set that will temporarily replace the thread’s signal mask.
• sigset_size: The size of the signal set, in bytes.

Returns

This function never returns Ok(()). It always returns an Errno, typically EINTR (or a restart equivalent).