Function sys_copy_rendezvous

kernel/src/syscalls.rs:547–565

Make a copy of a Rendezvous Takes handle as first argument (syscall RDI) Returns new handle in RDI

(context_ptr: *mut Context, handle: u64)

/// Takes handle as first argument (syscall RDI)
/// Returns new handle in RDI
fn sys_copy_rendezvous(context_ptr: *mut Context, handle: u64) {
    let context = unsafe {&mut (*context_ptr)};

    if let Some(mut thread) = process::take_current_thread() {
        thread.set_context(context_ptr);

        // Thread::rendezvous() returns a clone
        if let Some(rdv) = thread.rendezvous(handle) {
            let new_handle = thread.give_rendezvous(rdv);
            // Return
            context.rax = 0; // Success!
            context.rdi = new_handle;
        } else {
            // Missing handle
            thread.return_error(SYSCALL_ERROR_INVALID_HANDLE);
        }
        process::set_current_thread(thread);
    }
}

/// Create a new process
///