172 	close(file_fd);  in cleanup()
181 	close(parent_pipe[0]);  in do_child1()
182 	close(child_pipe1[1]);  in do_child1()
183 	close(child_pipe2[0]);  in do_child1()
184 	close(child_pipe2[1]);  in do_child1()
185 	close(child_pipe3[0]);  in do_child1()
186 	close(child_pipe3[1]);  in do_child1()
213 	close(parent_pipe[0]);  in do_child2()
214 	close(child_pipe1[0]);  in do_child2()
215 	close(child_pipe1[1]);  in do_child2()
216 	close(child_pipe2[1]);  in do_child2()
217 	close(child_pipe3[0]);  in do_child2()
218 	close(child_pipe3[1]);  in do_child2()
251 	close(parent_pipe[0]);  in do_child3()
252 	close(child_pipe1[0]);  in do_child3()
253 	close(child_pipe1[1]);  in do_child3()
254 	close(child_pipe2[0]);  in do_child3()
255 	close(child_pipe2[1]);  in do_child3()
256 	close(child_pipe3[1]);  in do_child3()
526 		close(parent_pipe[1]);  in main()
527 		close(child_pipe1[0]);  in main()
528 		close(child_pipe2[0]);  in main()
529 		close(child_pipe3[0]);  in main()