MFD3_TOKEN
mfd3 = restore_and_verify_memfd(s_files2_fd, MFD3_TOKEN, MFD3_DATA);
fail_exit("restore_and_verify_memfd for token %#x", MFD3_TOKEN);
if (create_and_preserve_memfd(s_files2_fd, MFD3_TOKEN, MFD3_DATA) < 0) {
MFD3_TOKEN);