//go:build linux

package sockets

import (
	"io"

	"golang.org/x/sys/unix"
)

type monitor struct {
	fd     int
	closed bool
}

func (m *monitor) Read(p []byte) (int, error) {
	n, err := unix.Read(m.fd, p)
	if m.closed {
		return 0, io.EOF
	}
	return n, err
}

func (m *monitor) Close() error {
	if m.closed {
		return nil
	}
	m.closed = true
	return unix.Close(m.fd)
}