Clean SEGV Recovery Demo
Purpose Herein is a example program which forks and execs a child and passes
the "used fd" number to it to let it know what fd it should use.
The point is to demo that the act of execing does not overwrite the file
descriptors so a fork and exec could be part of a SEGV handler for
a network app which now can keep connections alive and open while
execing a replacement server which takes over from where the other left
off. No need to drop connection.
Caolan McNamara (2000) <firstname.lastname@example.org>