Method cleanup

cmd/run/engine/process/process.go:265–292

()

}

func (p *Process) cleanup() {
	// TODO: is this right? what if a FD we hold is held by another process with
	// a dup+sendmsg or a pidfd_getfd?
	<-p.Exited

	p.mu.RLock()
	defer p.mu.RUnlock()
	var errs []error
	for fd, s := range p.sockets {
		if errno := s.Close(); errno != 0 {
			errs = append(errs, fmt.Errorf("close socket fd=targfd_%d: %w", fd, errno))
		}
	}

	if !p.pidfd.ClosingIncRef() {
		errs = append(errs, fmt.Errorf("pidfd: already closed"))
	} else {
		defer p.pidfd.DecRef()
		p.pidfd.Lock()
		if err := unix.Close(p.pidfd.FD()); err != nil {
			errs = append(errs, fmt.Errorf("pidfd: close: %w", err))
		}
	}

	for idx, err := range errs {
		slog.Error("failed to clean up process", "process", p, "idx", idx, "err", err)
	}
}

func findUsername(uid uint32) (string, error) {
	b, err := os.ReadFile("/etc/passwd")