56 pid_t childpid;  variable
63 	if (0 < childpid) {  in cleanup()
66 		if (kill(childpid, 0) == 0 || errno == ESRCH) {  in cleanup()
69 			(void)kill(childpid, 15);  in cleanup()
72 			if (waitpid(childpid, &status, WNOHANG) < 0) {  in cleanup()
74 					 "waitpid(%d, ...) failed", childpid);  in cleanup()
86 void parent(int masterfd, int childpid)  in parent()  argument
146 	while (waitpid(childpid, &status, WNOHANG) < 0 && errno != ESRCH) ;  in parent()
211 	pid_t childpid;  in main()  local
226 	childpid = fork();  in main()
227 	if (childpid == -1)  in main()
229 	else if (childpid == 0)  in main()
232 		parent(masterfd, childpid);  in main()