read_lba
if (read_lba(state, lba, (u8 *) p, count) < count) {
if (read_lba(state, lba, (u8 *) p, count) < count) {
if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba),
if (read_lba(state, lba, (u8 *) gpt, ssz) < ssz) {
read_lba(state, 0, (u8 *)legacymbr, sizeof(*legacymbr));