...0: for (size_t j = 1; j < argc; j++) { printf("Child writing %s to efd\n", argv[j]); u = strtoull(argv[j], NULL, 0); /* strtoull() allows various bases */ s = write(efd, &u, siz…...0: for (size_t j = 1; j < argc; j++) { printf("Child writing %s to efd\n", argv[j]); u = strtoull(argv[j], NULL, 0); /* strtoull() allows various bases */ s = write(efd, &u, siz…create a file descriptor for handling page faults in user space NAME userfaultfd - create a file descriptor for handling page faults in user space LIBRARY Standard C library ( libc…