97 int p1fd[2], p2fd[2];  variable
126 	close(p2fd[0]);  in P1()
144 		write(p2fd[1], "1", 1);  in P1()
163 		write(p2fd[1], "1", 1);  in P1()
189 		write(p2fd[1], "1", 1);	/* tell p2 to go ahead and sethostname */  in P1()
208 		write(p2fd[1], "1", 1);	/* tell p2 to go ahead and sethostname */  in P1()
235 	close(p2fd[1]);  in P2()
246 			len = read(p2fd[0], hostname, 1);  in P2()
255 			len = read(p2fd[0], hostname, 1);  in P2()
306 	if (pipe(p2fd) == -1) {  in main()
342 			write(p2fd[1], "0", 1);	/* don't let p2 hang */  in main()