read_xml
if ((n = read_xml(s, &xml)) <= 0)
int read_xml(int s, char **buf);
if ((n = read_xml(udev_monitor->socket, &xml)) <= 0)
if ((n = read_xml(udev_monitor->socket, xml, 12*1024*1024)) <= 0) {
if ((n = read_xml(s, xml, 12*1024*1024)) <= 0) {
int read_xml(int s, char **buf);
n = read_xml(cli->fd, &xml);