on the latest fedora we glibc uses poll. On the other linux distro I tried (void), musl is probably providing poll as a ppoll wrapper.

with the split into two process, the call to daemon was lost

this way, we can sandbox the listener with seccomp (todo) or capsicum (already done) and still have CGI scripts. When we want to exec, we tell the executor what to do, the executor executes the scripts and send the fd backt to the listener.