Changing the Service Environment: Running doconfig()

Before invoking the service designated in the port monitor administrative file, _pmtab, a port monitor must arrange for the per-service configuration script to be run, if one exists, by calling the library function doconfig(). Because the per-service configuration script can specify the execution of restricted commands, as well as for other security reasons, port monitors are invoked with root permissions. The details of how services are invoked are specified by the person who defines the port monitor.